JP5305261B2 - Heating element manufacturing method and heating element manufacturing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heating element manufacturing method capable of attaining a simple and inexpensive configuration and easily increasing a speed, a sealing die, an excess-water-containing exothermic composition supplier, a heating element manufacturing device using it and a heating element. <P>SOLUTION: In the heating element manufacturing method, the sealing die, the excess-water-containing exothermic composition supplier, the heating element manufacturing device using it and the heating element, the heating element manufacturing method has essential processes which are the die molding process of using the excess-water-containing exothermic composition whose excess water value is 0.5 to 80 and molding the excess-water-containing exothermic composition into an exothermic composition molded article by a molding die having a die hole, and the sealing process of sealing the peripheral edge part of the exothermic composition molded article clamped by a base material and a cover material by the sealing die having a sealing part and a space part. To the die hole, the space part has such relation that a margin value which is a value for which a margin distance as a distance between the opening shape line of the die hole of the molding die and the opening shape line of the space part of the sealing die corresponding to it is divided by the height of the die hole is 0.1 to 60. <P>COPYRIGHT: (C)2009,JPO&amp;INPIT

Description

The present invention prevents bridging for producing a heating element using an excess water exothermic composition containing magnetic powder such as iron powder, and simultaneously wears and fills the excess water exothermic composition into the molded part. Performing smooth filling once, continuous supply of the surplus water exothermic composition by the surplus water exothermic composition supply device, and prevention of shape loss of the exothermic composition molded body obtained by molding the surplus water exothermic composition at the time of sealing, and A heating element manufacturing method, a sealing mold, an excess water-containing exothermic composition supplying device, an exotherm, which uses a sealing mold with a sealing mold having a margin value of 0.1 to 60 as an element to prevent the influence of the shape loss fragment on the sealing The present invention relates to a body manufacturing apparatus and a heating element.

Conventional disposable body warmer manufacturing apparatuses include those described in Patent Document 1. This disposable body warmer manufacturing apparatus has a hopper that contains a heat generating agent containing magnetic powder, a plurality of measuring recesses that can store the heat generating agent on the outer periphery, and holds the heat generating agent in the hopper in the measuring recess. The rotating drum and the transfer drum to which the exothermic agent conveyed by the measuring drum is transferred from the measuring recess, and the first sheet and the second sheet that are superposed so as to sandwich the exothermic agent. It includes a seal roll for sealing at the peripheral portion, a cut roll for cutting both sheets after sealing and cutting them one by one, and a transport belt for transporting the cut warmers.

The measuring drum uses an electromagnet at the bottom of each measuring recess, and an accommodating recess for accommodating the exothermic composition transferred from the measuring recess corresponds to the measuring recess of the measuring drum on the outer periphery of the transfer drum. Thus, a plurality of magnets are formed in the circumferential direction, and a permanent magnet is provided at the bottom of each receiving recess. And by this permanent magnet, the heat generating agent in a measurement recessed part is adsorb | sucked in an accommodation recessed part via the 1st sheet | seat wound around the outer periphery of the transfer drum.

Another disposable warmer manufacturing apparatus is described in Patent Document 2. This disposable body warmer manufacturing apparatus has a hopper that contains a heat generating agent containing magnetic powder, a plurality of measuring recesses that can store the heat generating agent on the outer periphery, and holds the heat generating agent in the hopper in the measuring recess. In a disposable body warmer manufacturing apparatus including a measuring drum that is conveyed by rotation and a transfer drum in which the exothermic agent conveyed by the measuring drum is transferred from the measuring recess, the exothermic agent in the hopper is adsorbed in the measuring recess. And a measuring drum provided in a position corresponding to the inner hopper of the measuring drum so as not to move in the rotating direction of the measuring drum, and disposed inside the hopper on the lower side of the rotating direction with respect to the magnet. A pressing means for pressing the heat generating agent in the vicinity of the measuring recess by the rotation of the measuring drum by the pressing piece whose distance to the lower side becomes narrower, A removing means is provided on the lower side of the pressure means to remove the extra heat generating agent outside the measuring recess from the measuring drum, and the pressure releasing position by the pressing means and the heat generating agent transfer position to the transfer drum are measured. It is arranged on the upper side of the drum, and the heating agent in the measurement recess is conveyed from the release position to the transfer position through the upper side of the measurement drum by the rotation of the measurement drum.

Another disposable warmer manufacturing apparatus is described in Patent Document 3. This disposable body warmer manufacturing apparatus is a laminated packaging body manufacturing apparatus provided with a pressure feed pump, an extrusion nozzle, an adhesive application section, and a cylindrical drum body that is rotationally controlled. A pattern roll, a backup roll provided on the outer peripheral surface of the pattern roll, and a material extrusion nozzle having a discharge port for making the viscous material into a thin plate shape while directing the pattern roll toward the hole opening side, and the material A pump that pressurizes and feeds the viscous material to the extrusion nozzle, a first traveling means that causes the base sheet to travel between the pattern roll and the backup roll, and a press roll, and a coating that travels on the base sheet by the second traveling means. It is the manufacturing apparatus of the laminated package which provided the press roll which carries out lamination | stacking coating of a sheet | seat, and the adhesive agent application part which apply | coats an adhesive agent to a coating sheet.

Japanese Patent Laid-Open No. 6-80108 JP 2004-248719 A Japanese Patent Laid-Open No. 11-20111

In the conventional apparatus, since the heating agent is transported through the lower side of the measuring drum from the hopper to the transfer position, the electromagnet is magnetized so that the heating agent does not fall off in that range, while the measuring recess When the heat generating agent is transferred from the housing to the receiving recess, the electromagnet on the measuring recess is demagnetized in order to attract the heating agent to the permanent magnet on the receiving recess. Therefore, it is necessary to provide a magnetizing chamber and a demagnetizing chamber in the circumferential direction inside the measuring drum to control the magnetization and demagnetization of the electromagnet.

Therefore, there is a problem that the electromagnet wiring must be provided inside the measuring drum, which complicates the apparatus. Further, it is necessary to provide a control device for performing magnetization and demagnetization, and the entire device becomes expensive. Further, since the control of the magnetization and demagnetization of the electromagnet becomes more difficult as the speed of the apparatus is increased, it is very difficult to manufacture a high-speed apparatus.

In the apparatus of Patent Document 2, a hopper containing a heat generating agent is provided between the highest rotation point and the lowest rotation point of the measuring drum, and the heat generating agent is adsorbed to the measurement recess by a fixed magnet, and is rotated and conveyed to the highest rotation point. The exothermic agent is transferred from the measuring recess to the receiving recess of the transfer drum having the receiving recess.
The transfer cannot be expected to have a transfer effect due to gravity, and a plurality of the receiving recesses are formed on the outer periphery of the transfer drum at equal intervals in the circumferential direction so as to correspond to the measurement recesses of the measurement drum, and in the axial direction. One row or a plurality of rows (for example, two rows) are formed. A magnet (permanent magnet) is laid on substantially the entire bottom surface of the accommodating recess, and the heat generating agent in the measuring recess is attracted by the magnet at the transfer position. That is, it is necessary to use a transfer drum provided with a magnet in each housing recess, and there is a problem that the apparatus becomes complicated. Moreover, it is necessary to provide a magnet in each accommodation recessed part, and it will become expensive as the whole apparatus. Furthermore, the higher the speed of the device, the more difficult it becomes to control the transition from the rotating body to the rotating body, and there is a mechanism to push the heating agent into the measuring recess with the pressing means and magnet provided inside the hopper. Indeed, the pressing by the pressing means is uneven and difficult, and the pressing becomes insufficient. Further, a removing means for removing the extra heating agent outside the measuring recess from the measuring drum is provided on the lower side of the pressing means, but it is substantially difficult to remove the extra heating agent outside the measuring recess. Thus, there is a tendency to roughen the surface of the heat generating agent in the measurement recess, and this becomes more remarkable as the speed increases. Even when the end of the second pressing piece is substantially in contact with the outer periphery of the measuring drum, the second pressing piece presses the outer periphery along the rotation direction of the measuring drum, and the pressing into the measuring recess is insufficient. It is difficult to remove the exothermic agent accumulated in the measurement recess by pressing means, and it becomes impossible as the speed increases, and it is very difficult to manufacture a high-speed device. .

   Further, when the exothermic composition molded body obtained by molding the surplus water exothermic composition using water as a connecting material of the component of the exothermic composition is used for manufacturing various sizes and shapes of the exothermic composition molded body, Was sandwiched between the packaging materials, and when the peripheral portion of the exothermic composition molded body was sealed, the exothermic composition molded body was liable to lose its shape and easily cause a sealing failure such as a seal breakage.

  SUMMARY OF THE INVENTION In view of the above-described conventional problems, the present invention provides heat generation for manufacturing various-sized and various-shaped heating elements that can be easily increased in speed with a simple and inexpensive configuration without sealing failure. The object is to provide a body manufacturing method, a heating element manufacturing apparatus, and a heating element.

Originating thermal body production method of the present invention, as described in claim 1,
An exothermic composition filled with a cylindrical through-hole having an inner diameter of 29 mm and a height of 20 mm placed on “two types” filter paper of JIS-P3801 with iron powder, carbon component, reaction accelerator and water as essential components The permeation distance of water or aqueous solution penetrating into the filter paper is divided by the height (mm) of the cylindrical through-hole which is the height of the exothermic composition proportional to the total water content at the time of measurement of the exothermic composition filled. A surplus water exothermic composition containing surplus water, which is a surplus water value of 0.5 to 80 , which is a value expressed as a percentage, and can be easily moved out of the exothermic composition system. A mold forming step of forming the excess water exothermic composition into a exothermic composition molded body by using a mold having a mold hole, and a peripheral portion of the exothermic composition molded body sandwiched between the substrate and the covering material The sealing process that seals the space with a sealing mold having a space part and a sealing part is an essential process A heating element manufacturing method of,
In the mold forming step, as a mold having a mold hole, a hollow rotating body having a molded part with a thickness of 0.1 to 10 mm on the peripheral surface is provided, and the mold hole is provided in the molded part. The hollow rotating body is connected to a hollow cylindrical rotating body having a molded part having a thickness of 0.1 to 10 mm on the peripheral surface and a sheet-shaped mold having a molded part having a thickness of 0.1 to 10 mm. It is one kind selected from a chain conveyor-like rotating body,
A plate-like body having a straight portion and a tip portion having a thickness of 0.1 to 30 mm, and a surplus water heating composition supplying device having a blade that comes into contact with a peripheral surface corresponding to a molding portion of the hollow rotating body; Corresponding to the contact portion of the molding portion with the peripheral surface of the blade, a magnet provided on the opposite side of the molding portion to the blade so as not to move along the rotation of the rotating body, and a substrate A base material supply means for supplying the hollow rotating body, a mounting device for mounting the heat generating composition molded body on the base material, and a covering material supply means;
The base material is positioned on the outer peripheral surface side that is the open port side of the through hole of the hollow rotating body having the through hole, and the through hole bottomed on the base material has a predetermined capacity and shape. On the base material being formed and transported,
The surplus water exothermic composition replenishment unit is disposed in the surplus water exothermic composition replenishment unit of the surplus water exothermic composition supply device disposed inside the hollow rotor. Is provided in the smooth filling portion which is formed continuously from the blade and a skirt made of a material having elasticity and flexibility and is in contact with the inner peripheral surface on the opening side of the through hole. The blade is provided so as to oppose the rotation direction of the hollow rotating body, and the contact angle (θt) is set to 95 ° to 170 ° to constitute a one-time smooth filling system, A magnet provided so that the blade does not move along the rotation of the hollow rotating body on the surface side opposite to the surface to which the excess water heating composition is supplied, while scraping the opening side of the through-hole. To supply from the opening side of the through hole. The covering material supplied from the covering material supply means is formed by smooth-filling the surplus water-containing exothermic composition into the forming portion once to form a heat generating composition molded body, and further laminated on the base material. Is coated on the exothermic composition molded body and the substrate, and conveyed to the sealing step,
In the sealing step, the peripheral portion of the exothermic composition molded body sandwiched between the base material and the covering material is sealed using a seal mold having the space portion and a seal portion. .
Also, outgoing heat body manufacturing method according to claim 2 is the outgoing heat body manufacturing method according to claim 1,
An exothermic composition filled with a cylindrical through-hole having an inner diameter of 29 mm and a height of 20 mm placed on “two types” filter paper of JIS-P3801 with iron powder, carbon component, reaction accelerator and water as essential components The permeation distance of water or aqueous solution penetrating into the filter paper is divided by the height (mm) of the cylindrical through-hole which is the height of the exothermic composition proportional to the total water content at the time of measurement of the exothermic composition filled. A surplus water exothermic composition containing surplus water, which is a surplus water value of 0.5 to 80 , which is a value expressed as a percentage, and can be easily moved out of the exothermic composition system. A mold forming step of forming the excess water exothermic composition into a exothermic composition molded body by using a mold having a mold hole, and a peripheral portion of the exothermic composition molded body sandwiched between the substrate and the covering material The sealing process that seals the space with a sealing mold having a space part and a sealing part is an essential process A heating element manufacturing method of,
In the mold forming step, a hollow cylindrical rotating body having a molded part having a thickness of 0.1 to 10 mm on the peripheral surface is provided as a mold having a mold hole, and the mold hole is provided in the molded part. And
A surplus water heating composition supply device comprising a plate-like body having a straight portion and a tip portion having a thickness of 0.1 to 30 mm, and a blade that comes into contact with a peripheral surface corresponding to a molding portion of the hollow cylindrical rotating body And an external fixed magnet provided so as not to move along the rotation of the hollow cylindrical rotating body on the side opposite to the blade of the molding portion, corresponding to a contact portion with the peripheral surface of the blade. A base material supply means for supplying the base material to the hollow cylindrical rotating body, and a coating material supply means,
A plurality of the through holes penetrates in the radial direction of the hollow cylindrical rotating body having the through holes, and a plurality of the through holes are provided, and the through holes of the hollow cylindrical rotating body having the through holes are opened. The base material is positioned on the outer peripheral surface side, which is the mouth side, and a molded part having a predetermined capacity and shape is formed by the through hole bottomed on the base material, and the base material being transported ,
The surplus water exothermic composition is supplied to the surplus water exothermic composition replenishment unit of the surplus water exothermic composition supply device disposed inside the hollow cylindrical rotating body. In the smooth filling portion that is provided below the replenishment portion, forms a smooth filling portion from a blade and a skirt made of elastic or flexible material, and abuts the inner peripheral surface on the opening side of the through hole. The smoothing system is provided once by providing the blade provided to the opposite side of the rotation direction of the hollow cylindrical rotating body and setting the contact angle (θt) to 95 ° to 170 °. The blade is scraped off the opening side of the through-hole, and corresponds to the abutting portion of the blade, and the surface on the surface opposite to the surface to which the surplus water heating composition is supplied in the base material. Along the rotation of a hollow cylindrical rotating body The exothermic fixed magnet provided so as not to move is supplied from the opening side of the through hole, and the excess water exothermic composition is smoothly filled once into the molding portion, thereby forming the exothermic composition molded body. And further laminating the base material, further coating the covering material supplied from the covering material supply means on the exothermic composition molded body and the base material, and transporting to the sealing step,
In the sealing step, the peripheral portion of the exothermic composition molded body sandwiched between the base material and the covering material is sealed using a seal mold having the space portion and a seal portion. .
Further, the heating element manufacturing method according to claim 3 is the heating element manufacturing method according to claim 1 ,
An exothermic composition filled with a cylindrical through-hole having an inner diameter of 29 mm and a height of 20 mm placed on “two types” filter paper of JIS-P3801 with iron powder, carbon component, reaction accelerator and water as essential components The permeation distance of water or aqueous solution penetrating into the filter paper is divided by the height (mm) of the cylindrical through-hole which is the height of the exothermic composition proportional to the total water content at the time of measurement of the exothermic composition filled. A surplus water exothermic composition containing surplus water, which is a surplus water value of 0.5 to 80, which is a value expressed as a percentage, and can be easily moved out of the exothermic composition system. A mold forming step of forming the excess water exothermic composition into a exothermic composition molded body by using a mold having a mold hole, and a peripheral portion of the exothermic composition molded body sandwiched between the substrate and the covering material The sealing process that seals the space with a sealing mold having a space part and a sealing part is an essential process A heating element manufacturing method of,
In the mold forming step, a chain conveyor-like rotating body connected to a sheet-shaped mold having a molded portion having a thickness of 0.1 to 10 mm is provided as a mold having a mold hole, and the mold hole is provided in the molded portion. A plurality of sheet-shaped molds connected to a chain and driven by the chain supported inside the frame of the chain conveyor-like rotating body, and the through-hole is formed in the sheet-shaped mold. One or more plate-shaped bodies having a straight portion and a tip portion with a thickness of 0.1 to 30 mm, which are in contact with the surface corresponding to the molded portion of the chain conveyor-like rotating body. Corresponding to the contact portion between the surplus water heating composition supply device having a movable blade and the peripheral surface of the spring-type automatic movable blade, the chain on the opposite side of the spring-type automatic movable blade of the molding portion Combe An external fixed magnet provided so as not to move along with the rotation of the A-shaped rotating body, a base material supplying means for supplying the base material to the chain conveyor-shaped rotating body, and a covering material supplying means;
A chain that is supplied from the base material supply means, is supported by an endless belt, supplies the base material so as to contact the lower sheet-shaped mold of the chain conveyor-like rotating body, and connects the sheet-shaped molds with through holes. The base material is positioned on the outer surface side that is the opening side of the through hole of the conveyor-like rotating body, and a molding part having a predetermined capacity and shape is formed by the through hole bottomed on the base material. And the surplus water contained in the surplus water exothermic composition replenishment section of the surplus water exothermic composition supply device disposed inside the chain conveyor-like rotating body on the substrate being conveyed The exothermic composition is continuously provided below the replenishment unit for the excess water-containing exothermic composition so as to form a smooth filling portion from the spring-type automatic movable blade and a skirt made of an elastic or flexible material, and The inner surface side that is the opening side of the through hole The spring-type automatic movable blade provided in the smooth filling portion that is in contact is provided so as to oppose the rotational traveling direction of the hollow rotating body, and the contact angle (θt) is set to 95 ° to 170 °. Thus, the surplus water heating composition in the base material corresponds to the contact portion of the spring-type automatic movable blade while constituting a smooth filling system once and the blade scrapes off the opening side of the through-hole. Is supplied from the opening side of the through-hole by an external fixed magnet provided so as not to move along the rotation of the chain conveyor-like rotating body on the surface opposite to the surface to which Each of the sheet-like dies of the plurality of sheet-like dies formed by forming the exothermic composition molding by smooth filling once with the excess water-containing exothermic composition and then connected by driving the chain Was detached from the substrate, the heat-generating composition molded body that is molded onto the substrate by laminating, further the base material of the coating material supplied to the heat-generating composition molded article from the coating material supply means coated on, and conveyed to the sealing process,
In the sealing step, the peripheral portion of the exothermic composition molded body sandwiched between the base material and the covering material is sealed using a seal mold having the space portion and a seal portion. .
Moreover, the heating element manufacturing apparatus of the present invention is as described in claim 4,
A heating element manufacturing apparatus used in the heating element manufacturing method according to any one of claims 1 to 3 ,
It was selected from a hollow cylindrical rotator having a molded part with a thickness of 0.1 to 10 mm on the peripheral surface and a chain conveyor-like rotator connected with a sheet-like mold having a molded part with a thickness of 0.1 to 10 mm. it is one, a hollow rotating body having a molded portion made of the through hole of the thick 0.1~10mm the peripheral surface,
A surplus water exothermic composition supply device having a blade that comes into contact with a peripheral surface corresponding to a molding portion of a hollow rotating body, in a plate-like body having a straight portion and a tip portion having a thickness of 0.1 to 30 mm ;
Corresponding to the contact portion of the molding portion with the peripheral surface of the blade, the molding portion is provided on the opposite side of the blade from the rotating body so as not to move along with the rotation of the rotating body. A magnet, a base material supply means for supplying the base material to the hollow rotating body, a mounting device for mounting the exothermic composition molded body on the base material, and a covering material supply means;
The surplus water of the surplus water exothermic composition feed device comprising the endless belt that conveys the base material supplied from the base material supply device and presses the base material toward the smooth filling portion. Continuously provided below the exothermic composition replenishment portion, the blade and a skirt made of a flexible or flexible material form a smooth filling portion and abut against the inner peripheral surface on the opening side of the through hole By providing the blade provided in the smooth filling portion so as to oppose the rotational traveling direction of the hollow rotating body and setting the contact angle (θt) to 95 ° to 170 °, the smooth filling system once. The hollow cylindrical rotating body is provided with a plurality of through-holes penetrating in the radial direction of the hollow cylindrical rotating body, and the chain conveyor-shaped rotating body is connected to a chain. Deploy a sheet mold and Type is disposed through holes least one penetrating in the thickness direction of the sheet type,
The base material is positioned on the outer peripheral surface side that is the open port side of the through hole of the hollow rotating body having the through hole, and the through hole bottomed on the base material has a predetermined capacity and shape. On the base material being formed and transported,
The surplus water exothermic composition supplied to the surplus water exothermic composition replenishment unit of the surplus surplus water exothermic composition supply device disposed inside the hollow rotating body, and the blade of the through hole While scraping off the opening side, it does not move along the rotation of the hollow rotating body to the surface side of the base material opposite to the surface supplied with the excess water heating composition corresponding to the contact portion of the blade. A function of forming the exothermic composition molded body by smooth filling once with the excess water exothermic composition into the molded part that is supplied from the opening side of the through-hole and moved by the magnet provided as described above It is characterized by having.

1. Between the mold hole of the mold and the space of the seal mold, the space is formed between the opening shape line of the mold hole of the mold and the corresponding opening shape line of the space of the seal mold. The margin value, which is a value obtained by dividing the margin distance, which is the distance between the two, by the height of the mold hole, has a relationship of 0.1 to 60, so that the end of the sealed heating element on the exothermic composition molded body side The part should be straight, and the part should be curvilinear, and has a very good appearance. There is no sealing failure such as a seal failure, and a heating element can be obtained in high yield.
2. The seal-type space portion has a margin value of 0.1 to 60, and a height value of 1.1 to 150, which is a value obtained by dividing the height of the space portion by the height of the mold hole, which is extremely superior. The heat generating element can be obtained in high yield without any sealing failure such as a seal failure.
3. Using a heat-generating composition molded body, which is a molded body of an excess water heat-generating composition that uses water as a connecting material for the components of the heat-generating composition, it is possible to supply heat-generating bodies of various sizes and shapes with good sealing. Become.
4). The surplus water exothermic composition supply device can smoothly fill the surplus water exothermic composition in one stage with a blade and a corresponding fixed magnet (single smooth filling), so surplus water based on moisture movement by pressing There is no loss of fluidity of the exothermic composition, fluidity of the excess water exothermic composition is maintained, there is no uneven filling, and it can be reliably and smoothly filled into the molded part at one time, without wiring of the electromagnet, and pressurization There is no pressurizing operation such as a pump, the structure is very simple, and it becomes possible to mold the excess water exothermic composition at low cost.
5. Since the surplus water exothermic composition supply device can smoothly fill the molding part once without causing the bridging of the surplus water exothermic composition, the exothermic composition molded body is enclosed between the base material and the coating material. Thereafter, since it is not necessary to inject water or a reaction accelerator solution into the exothermic composition molded body, the manufacturing process is greatly simplified.
6). The surplus water heating composition supply device can easily form various shapes and sizes of stable quality, including ultra-thin shapes, and can be laminated on a substantially smooth substrate. Can be produced at high speed and production costs can be significantly reduced.
7). A manufacturing apparatus using a chain conveyor-like rotating body by means of a surplus water exothermic composition supply device,
Excess water heating composition can be molded by a molding apparatus such as a manufacturing apparatus for a hollow cylindrical rotating body with a through-hole, a manufacturing apparatus for a hollow cylindrical rotating body with a recess, from ultra-thin to thick mold, Heating elements having a wide variety of shapes and thicknesses with stable quality can be easily and inexpensively manufactured at high speed.
8). The heat generating element according to the present invention, particularly the heat generating element having four or more divided heat generating parts, has a minimum bending resistance of 70 mm or less and a minimum bending resistance change of 0 or less. Flexibility does not change before use, during use, and after use. It has excellent adhesion and does not cause uneven heat generation.
9. The heating element according to the present invention, in particular the heating element in which staggered cuts are provided in at least a part of the stripe heating element, can be expanded and contracted in at least one direction while being a single heating element. It is easy to handle because it has a close contact with the curved portion and the like and has a structure in which only one direction can bend more easily than the other direction.

The present invention relates to a heat generating composition obtained by molding a surplus water exothermic composition at the time of sealing when producing a heating element having a moldability and using a surplus water exothermic composition containing magnetic powder such as iron powder. Prevents the shape of the molded product from being deformed and prevents the molded piece from being affected by seals, prevents bridging, and performs smooth smoothing once to fill the molded part with scraping and filling of the excess water exothermic composition. The present invention relates to a heating element manufacturing method by continuous supply of a water heating composition, a seal mold, a surplus water heating composition supply apparatus, a heating element manufacturing apparatus, and a heating element. The surplus water exothermic composition has a surplus water value of more than 0, preferably 0.5 to 80.
In addition, the heating element manufacturing method of the present invention uses a surplus water heating composition, and with a mold having a mold hole, smooth filling once using a blade having a contact angle of 95 ° to 175 °, A mold forming step for forming the exothermic water-containing exothermic composition into a exothermic composition molded body, a lamination / coating step for laminating the exothermic composition molded body on a base material, and covering the covering material, and sandwiching the base material and the covering material Sealing step of sealing the peripheral portion of the exothermic molded article thus obtained with a sealing mold having at least a space portion with a margin value of 0.1 to 60 and a sealing portion, and individual heating elements made by sealing are connected This is a heating element manufacturing method in which the cut process of cutting the continuous heating elements into individual heating elements is a basic process, and the mold forming process and the sealing process are essential processes.

The moldability of the present invention is a function capable of maintaining the shape of the through-hole even after being housed in a mold having a through-hole and removing the mold. 19 and 20 are cross-sectional views for explaining moldability.
FIG. 19 illustrates an exothermic composition 59 having moldability.
Measurement is performed using a mold formability measuring device 62. A measurement plate 48 is placed on a non-water-absorbing plastic film 56 on the support plate 53. Next, the exothermic composition 59 is placed and filled into the cylindrical through hole 49 of the measurement plate 48 by the filling plate 54 and the magnet 61, the magnet 61 is removed, the measurement plate 48 is removed, and then the cylindrical through hole 49 is filled. The shape is maintained. FIG. 20 illustrates an exothermic composition 59 without moldability. Similarly, after the measurement plate 48 is removed, the shape of the columnar through hole 49 cannot be maintained, and is collapsed in all directions.

As a specific example, the heating element manufacturing method of the present invention is as follows. 1) Iron powder, carbon component, reaction accelerator, water are essential components, and an inner diameter of 29 mm placed on “two types” filter paper of JIS-P3801. X A value obtained by dividing the permeation distance of water or an aqueous solution penetrating into the filter paper from the exothermic composition filled in the cylindrical through-hole having a height of 20 mm by the height (mm) of the cylindrical through-hole. A molding process and a base for using a surplus water exothermic composition having a surplus water value of 0.5 to 80 and molding the surplus water exothermic composition into a exothermic composition molded body with a mold having a mold hole. A heating element manufacturing method comprising a sealing step of sealing a peripheral portion of the exothermic composition molded body sandwiched between a material and a covering material with a sealing mold having a space portion and a sealing portion, On the other hand, the space portion includes the opening shape line of the mold hole of the mold and the A heating element having a relationship in which a margin value, which is a value obtained by dividing a margin distance, which is a distance from the opening shape line of the space portion of the seal mold corresponding to, by the height of the mold hole, is 0.1-60. In the case of this example, the height of the space part of the seal type is not particularly limited as long as the heating element can be manufactured. 2) Iron powder, carbon component, reaction accelerator, water Of water or aqueous solution that permeates the filter paper from the exothermic composition filled in the cylindrical through-hole having an inner diameter of 29 mm × height of 20 mm placed on “two types” filter paper of JIS-P3801 Using a surplus water exothermic composition having an excess water value of 0.5 to 80, which is a value obtained by dividing the distance by the height (mm) of the cylindrical through hole as a percentage, and depending on the mold having the mold hole A mold forming step of molding the excess water exothermic composition into a exothermic composition molded body, and a substrate; A heating element manufacturing method comprising a sealing step of sealing a peripheral portion of the exothermic composition molded body sandwiched between coating materials with a sealing mold having a space portion and a sealing portion. The space portion is a value obtained by dividing a margin distance, which is a distance between the opening shape line of the mold hole of the mold and the opening shape line of the space portion of the seal mold corresponding thereto, by the height of the mold hole. A heating element having a relationship that a certain margin value is 0.1 to 60 and a height value obtained by dividing a height of the space portion by a height of the mold hole is 1.1 to 150. 3) With respect to the mold hole of the mold, the space part of the seal mold is at least between the opening shape line of the mold hole of the mold and the corresponding opening shape line of the space part of the seal mold. The margin value, which is a value obtained by dividing the margin distance, which is the distance between the two, by the height of the mold hole is 0.1 to 60 A heating element manufacturing method in which, in the sealing step, the sealing is performed with a plurality of seal dies, and the sealing is performed so that at least a part of at least two seal portions overlap each other in the sealing step. 4) Molding With respect to the mold hole of the mold, the space part of the seal mold has at least a margin distance that is a distance between the opening shape line of the mold hole of the mold and the opening shape line of the space part of the seal mold corresponding thereto. While the margin value which is a value divided by the height of the mold hole has a relationship of 0.1 to 60, the mold molding is a rotary mold, and the seal mold is a rotary seal mold. In addition, a radius is provided adjacent to the end of the seal surface that is the seal-type seal portion on the excess water heating composition side, and the cross-sectional shape of the seal surface that is the seal-type seal portion is formed in an uneven shape. A pattern is provided, and at least convex of the irregularities 5) A heating element manufacturing method in which sealing is performed by a sealing die provided with rounded corners. 5) The space of the sealing die is at least of the die hole of the molding die. A margin value that is a value obtained by dividing a margin distance, which is a distance between the opening shape line and the opening shape line of the seal-type space portion corresponding thereto, by the height of the mold hole is 0.1 to 60 6) The heating element manufacturing method according to any one of 3) to 5) above, wherein at least a part of the seal-type space is covered with a separator. With respect to the mold hole, the space portion has a margin distance that is a distance between the opening shape line of the mold hole of the mold and the opening shape line of the space portion of the seal mold corresponding to the height of the mold hole. The margin value which is a value divided by 0.1 is 0.1 to 60, and the height of the space portion is A heating element manufacturing method having a relationship in which a height value, which is a value divided by the height of the recording hole, is 1.1 to 150, and 7) a straight portion and a tip portion having a thickness of 0.1 to 30 mm. A surplus water heating composition supply device having a blade that has a plate-like body that is in contact with a peripheral surface corresponding to a molding part of a hollow rotating body and whose contact angle (θt) is 95 ° to 170 °; Corresponds to the contact portion (that is, the contact position) of the hollow rotating body having a molded portion with a thickness of 0.1 to 10 mm on the peripheral surface and the peripheral surface of the blade, opposite to the blade of the molded portion A magnet provided so as not to move along the rotation of the rotating body, the base material supplying means for supplying the base material to the hollow rotating body, and the exothermic composition molded body are placed on the base material. And a covering material supply means, and a contact portion (that is, a contact position) with the peripheral surface of the blade and the front The recording magnet corresponds to the heat generating part that has iron powder in the moving molded part and is filled in a cylindrical through-hole having an inner diameter of 29 mm and a height of 20 mm, which is placed on “Class 2” filter paper of JIS-P3801. A surplus water value of 0.5 to 80, which is a value obtained by dividing the permeation distance of water or an aqueous solution penetrating from the composition into the filter paper by the height (mm) of the cylindrical through hole, as a percentage The exothermic composition is molded by forming the exothermic composition by smooth-filling the water exothermic composition, and the laminate is further laminated on the substrate, and the covering material is coated on the exothermic composition and the substrate. 8) A method for producing a heating element that seals the peripheral edge of the hollow cylindrical rotating body having a thickness of 0.1 to 10 mm on the peripheral surface, and a thickness of 0.1 mm. Surplus water heating composition supply device having a blade having a straight portion and a tip portion in a plate-like body of ˜30 mm The permeation distance of water or an aqueous solution penetrating into the filter paper from the exothermic composition filled in the cylindrical through hole having an inner diameter of 29 mm × height of 20 mm placed on the “two types” filter paper of JIS-P3801 A surplus water exothermic composition having a surplus water value of 0.5 to 80, which is a value obtained by dividing the value obtained by dividing the columnar through-hole height (mm) as a percentage, is supplied, and corresponds to a molded part of a hollow rotating body. Corresponds to the contact portion between the blade having a contact angle (θt) of 95 ° to 170 ° and the peripheral surface of the rotating body of the blade, and rotating to the opposite side of the molding portion to the blade. In order not to move along with the rotation of the body, the through hole of the molding part is smoothly filled once by an external fixed magnet provided outside the hollow cylindrical rotating body, and further supplied from the substrate supply means is, is supported on the endless Pelt, it is supplied so as to contact the lower portion of the rotary body 9. A heating element manufacturing method in which a molded exothermic composition molded body is laminated on a base material, further coated with a coating material supplied from a coating material supply means, and a peripheral portion of the exothermic composition molded body is sealed. ) A plate-like body having a thickness of 0.1 to 30 mm, provided at the lower part inside the chain conveyor-like rotating body connected with a sheet-like mold having a molding part having a thickness of 0.1 to 10 mm, and having a straight portion and a tip Exothermic composition filled from a surplus water exothermic composition supply device having a blade having a portion into cylindrical through-holes having an inner diameter of 29 mm × height of 20 mm placed on “two types” filter paper of JIS-P3801 A surplus water exothermic composition having a surplus water value of 0.5 to 80, which is a value obtained by dividing the permeation distance of water or an aqueous solution penetrating the filter paper from the height (mm) of the cylindrical through-hole by percentage Is supplied from the substrate supply means and supported by the endless belt. Are, then fed to the bottom stamped sheet-like type substrate supplied so as to contact the sheet-shaped lower portion of the rotating body, a surface abuts corresponding to the molding portion of the sheet-like type, the abutment Corresponds to the contact portion between the blade having an angle (θt) of 95 ° to 170 ° and the peripheral surface of the rotating body of the blade, and does not move along the rotation of the rotating body on the opposite side of the forming portion to the blade. As described above, the external fixed magnet provided on the outer side of the rotating body is used to smoothly and smoothly fill the through-hole of the molded part, and then the sheet-shaped mold is released from the base material. A heating element manufacturing method in which molded exothermic composition molded bodies are laminated, further coated with a coating material supplied from a coating material supply means, and the peripheral edge of the exothermic composition molded body is sealed. 10) Thickness 0 .Thickness provided on the outer upper part of a hollow cylindrical rotating body having a molded part of 1 to 10 mm on the peripheral surface Is a plate-like body having a straight portion and a tip portion of 0.1 to 30 mm, abutting against the peripheral surface corresponding to the molding portion of the hollow rotating body, and a corresponding contact angle (θt) of 95 ° to 170 ° Excess heat generation composition supply device having an iron powder containing iron powder and filled in a cylindrical through-hole having an inner diameter of 29 mm × height of 20 mm placed on “Class 2” filter paper of JIS-P3801 Excess water heat generation with an excess water value of 0.5 to 80, which is a value obtained by dividing the permeation distance of water or an aqueous solution penetrating from the composition into the filter paper by the height (mm) of the cylindrical through hole. The composition is supplied, and is in contact with the peripheral surface corresponding to the molded part of the hollow rotating body, and the blade having a corresponding contact angle (θt) of 95 ° to 170 ° and the outer peripheral surface of the rotating body of the blade Corresponding to the part, do not move along the rotation of the rotating body to the opposite side of the blade of the molding part To, by an internal stationary magnet provided inside of the hollow rotating body, and once smoothed filled in the through-hole of the molding portion, is further supplied from the base material supply means supported on the endless belt, rotary body substrate f fed to abut the lower portion of the molded heat-generating composition molded article was laminated, and further coating the supplied coating material from the coating material supply means, the peripheral portion of the heat-generating composition molded article 11) The contact angle (θt) of the blade is the center point of the contact position with the peripheral surface of the blade or the sheet-like mold surface and the blade of the surplus water heating composition supply device Excess water heat generated by the straight line connecting the three-dimensional center point of the opening for blade or blade attachment and the tangent or surface extension line at the center point of the contact position extending in the direction opposite to the traveling direction of the peripheral surface The angle on the composition side, which is 95 ° to 170 °, 7) 8) A method for producing a heating element based on any one of 9) and 10), 12) Heat generation by a combination selected from at least one of each of 1) to 6) and 7) to 11) It is a body manufacturing method. In addition, the method for producing a heat-generating composition molded body of the present invention includes a rotating body having a molded portion for manufacturing a heat-generating composition molded body, and a plate-shaped body having a straight portion and a tip portion having a thickness of 0.1 to 30 mm. And a surplus water heating composition supply device having a blade that is in contact with the peripheral surface corresponding to the molded portion of the hollow rotating body and has a corresponding contact angle (θt) of 95 ° to 170 °, and the periphery of the blade. The blade and the magnet correspond to and move by the magnet corresponding to the contact portion with the surface and provided so as not to move along the rotation of the rotating body on the opposite side of the blade of the molding portion. Method for producing exothermic composition molded body for molding exothermic composition molded body by smooth filling once with surplus water containing exothermic composition having iron powder in molding part and surplus water value of 0.5-80 If there is no limit. That is, the following (1) and (2) are given as an example. (1) The supply device is provided at the inner lower part of the rotating body, and a. The rotating body is a hollow cylindrical rotating body, and a molding portion provided on the peripheral surface is a through hole. b. The rotating body is a chain conveyor-like rotating body, and the forming part is a through hole provided in the sheet-like mold. (2) The supply device is provided on the outer upper part of a hollow cylindrical rotating body, and a. A molding portion provided on the peripheral surface of the rotating body is a through hole. b. The molding part provided on the outer peripheral surface of the rotating body is a recess. However, the surplus water exothermic composition contains iron powder, and the exothermic composition is filled in a cylindrical through hole having an inner diameter of 29 mm and a height of 20 mm, which is placed on “type 2” filter paper of JIS-P3801. The surplus water value, which is a value obtained by dividing the permeation distance of the water or aqueous solution penetrating the filter paper from the height of the cylindrical through hole (mm) by percentage, is 0.5 to 80, and The molding part is at least one selected from a through hole or a recess. As described above, the heating element manufacturing method of the present invention is a heating element manufacturing method using at least one selected from 1) to 12) of the heating element manufacturing method and the manufacturing method of the heating composition molded body. . Particularly, the manufacturing method and the heat generating composition of the heating element using the mold and the seal mold having the relationship that the margin value is 0.1 to 60 and the height value is 1.1 to 150. A heating element manufacturing method combined with a manufacturing method of a molded article is preferable.

  The mold hole of the molding die is a through-hole, a recess, or the like provided in the mold for molding the excess water exothermic composition and forming the exothermic composition molded body.

The method for producing a heating element of the present invention comprises: B. C. D. E. F. G. Will be described in detail as an example.
A. One heating element manufacturing method of the present invention is a heating element manufacturing method that uses a surplus water heating composition and has a molding step for molding and a sealing step for sealing as essential steps. The molding die having a sealing part having a sealing part which is a sealing region and a space part which is a non-sealing region, and the opening shape line of the mold hole of the molding die and the corresponding opening shape of the space part of the sealing die It is a heating element manufacturing method which has the relationship that the margin value which is the value which remove | divided the margin distance which is the distance between lines with the height of the said mold hole is 0.1-60.
In this heating element manufacturing method, the exothermic composition molded body obtained by molding the surplus water exothermic composition laminated on the base material is coated with the coating material, and the base material and the coating on the peripheral portion of the exothermic composition molded body are coated. This is a method for producing a heating element by sealing a material, and the opening shape line of the mold hole of the molding die having the mold hole in the direction of the seal progress is a seal part that is a seal area and a space part that is a non-seal area The opening shape line of the space part of the seal mold having the inside of the mold part is not in contact with, overlapping with, or intersecting with the opening shape line of the mold hole. Furthermore, because the mold hole of the mold and the space portion of the seal mold corresponding to the mold hole have a relationship that the margin value is 0.1 to 60, the excess water heat generation between the base material and the covering material The peripheral portion of the exothermic composition molded body obtained by molding the composition can be sealed with a high yield. In the case of this example, the height of the space portion of the seal mold is not particularly limited as long as the heating element can be manufactured.

The margin value of the present invention will be described.
The margin value is a value obtained by dividing the margin distance by the height of the mold hole of the mold.
The margin distance is defined as the center point of the opening surface of the space portion formed by the opening shape line of the space portion of the seal mold corresponding to the center point of the opening surface of the mold hole formed by the opening shape line of the mold hole of the mold. The distance between the opening shape line of the mold hole and the opening shape line of the space portion, which intersects the straight line passing through the center point, that is, the opening shape line of the mold hole and the space portion corresponding thereto The distance between the opening shape line. The opening shape line is a line drawing the shape of the mold hole at the opening of the mold hole of the mold or the shape, and the shape of the space at the opening of the space of the seal mold, or the shape. It is a line to draw.
However, when the center point of the opening surface of the mold hole of the molding die and the center point of the opening surface of the space portion of the seal mold are overlapped, the opening shape lines of both sides do not contact each other. In this state, the opening surface of the mold hole of the molding die is included in the opening surface of the space portion of the seal die without overlapping. The margin distance value is not limited as long as it is within a specified value, but it is preferable to increase the margin value as the mold hole height of the mold is higher.

That is, the margin distance is obtained from the following formula.

W = w / m
W: Margin value
m: mold hole height of the mold
w: margin distance

However,
1) When the opening shape of the mold hole of the mold is a straight line such as a rectangle,
The point where the extended line of each side that forms the corner of the opening shape line intersects
Good.
2) When the mold hole of the mold and / or the space of the seal mold is a through hole,
An opening shape line on the outlet side of the through hole is employed.
3) When the height of the mold hole of the mold is not uniform, it is preferable to adopt the maximum height of the mold hole.
4) If it is within the margin value range, the margin distance at each point on the opening shape line does not necessarily have to be constant. The opening shape of the mold hole of the molding die and the opening shape of the space portion of the seal die may be similar or non-similar.
5) If the shape has a plurality of center points, use the closest center point.

  The margin value of the present invention will be described with reference to FIGS.

FIG. 21A is a plan view showing an example of a mold.
The shape of the mold hole at the opening of the mold hole of the mold, or the opening shape line 75, which is a line that draws the shape, is a forming mold 64 provided with one mold hole 65 having a rectangular shape. q is the center point of the mold cavity.
FIG. 21B is a plan view showing another example of the mold.
Six mold holes 65, 65, 65, 65, 65, 65 are provided in which the shape of the mold hole at the opening of the mold hole of the molding die or the opening shape line 75 which is a line drawing the shape is rectangular. This is the formed mold 64. q is the center point of the mold cavity.

FIG. 22A is a plan view showing an example of a seal type.
The shape of the space portion at the opening portion of the seal-type space portion or the opening shape line 76 that is a line that draws the shape is a seal die 66 provided with one space portion 68 having a rectangular shape. The space portion 68 is surrounded by a seal portion 67. Q is the center point of the space.
FIG. 22B is a plan view showing another example of the seal type.
Six space portions 68, 68, 68, 68, 68, 68 are provided in which the shape of the space portion at the opening portion of the seal-type space portion or the opening shape line 76 which is a line drawing the shape is rectangular. This is a sealed type 66. The space portion 68 is surrounded by a seal portion 67. Q is the center point of the space.

FIG. 23 is a schematic plan view showing an example in which the mold hole of the mold and the space of the seal mold are combined.
The shape of the space portion at the opening portion of the seal-type space portion or the opening shape line 76 which is a line drawing the shape has six space portions 68, 68, 68, 68, 68, 68 that are rectangular. The seal mold 66 accommodates each opening shape line 76 in a rectangular space 68 and each opening shape line 75 of the molding die 64 having a rectangular mold hole 65 with a margin. Between the mold hole 65 of the molding die and the space portion 68 of the seal mold, the space portion 68 has a relationship that the margin value is 0.1 to 60 with respect to the mold hole 65. In this example, the seal-type space portion is surrounded by the seal portion 67. However, when sealing is performed separately from the vertical seal and the horizontal seal, the space portion 68 is not necessarily surrounded by the seal portion 67. There is no. Q is the center point of the space. q is the center point of the mold cavity.

FIG. 24A is a plan view showing another example of the mold.
A mold hole 65 having an opening shape line 75 having a rectangular shape is provided at the center of the mold 64. n1 is the length from the center point q of the mold hole 65 of the mold in the short direction to the opening shape line 75, and n2 is the length of the opening shape line 75 from the center point q of the mold hole 65 of the mold in the longitudinal direction. Is the length.
FIG. 24B is a plan view showing another example of the seal type.
A space 68 having a rectangular opening shape line 76 is provided at the center of the seal die 66, and a seal 67 is provided around the space 68.
N1 is the length from the center point Q of the seal-type space portion 68 to the opening shape line 76 in the short direction, and N2 is the length from the center point Q of the seal-type space portion 68 to the opening shape line 76 in the longitudinal direction. Is the length.
FIG. 24C is a schematic plan view showing the overlapping of the mold cavity and the space portion.
An opening shape line 76 of the rectangular space 68 of the seal die 66 is located outside the opening shape line 75 of the rectangular die hole 65 of the molding die 64 with marginal distances w1 and w2. In the short direction, the length N1 of the space from the center point Q to the opening shape line 76 is the length n1 from the center point q to the opening shape line 75 of the mold hole of the molding die plus the margin distance w1. The length N2 from the center point Q to the opening shape line 76 in the longitudinal direction is the length n2 from the center point q of the mold hole of the mold to the opening shape line 75, and the margin distance w2 is Each of the lengths satisfies a margin value of 0.1 to 60. The rectangular corners of the seal-type space are the points where the extended lines of the sides intersect, and the corners are rounded, and the corners are rounded.
Therefore, in this example, since a distance can be maintained between the exothermic composition molded body having a copy shape of the shape of the mold hole 65 and the end portion of the seal portion 67, the seal is not affected. Q is the center point of the space portion, and q is the center point of the mold hole.
The state in which the center point of the opening surface of the mold hole of the mold is overlapped with the center point of the opening surface of the space portion of the seal mold is such that both opening shape lines forming the opening surface do not come into contact with each other. In other words, the opening surface of the mold hole of the mold is included in the opening surface of the space portion of the seal mold.
Here, the opening shape line is the shape of the mold hole at the opening or opening surface of the mold hole of the molding die, or a line describing the shape, and the line at the opening or opening surface of the space portion of the seal mold. The shape of the space portion or a line that draws the shape.

B. One heating element manufacturing method of the present invention is a heating element manufacturing method that uses a surplus water heating composition, and has a molding step for molding and a sealing step for sealing as essential steps,
A mold having a mold hole and a seal mold having a seal portion which is a seal region and a space portion which is a non-seal region, and the space portion of the mold hole of the mold with respect to the mold hole. The margin value, which is a value obtained by dividing the margin distance, which is the distance between the opening shape line and the opening shape line of the seal-type space portion corresponding to the opening shape line, by the height of the mold hole is 0.1 to 60, And it is a heat generating body manufacturing method which has the relationship whose height value which is the value which remove | divided the height of the said space part with the height of the said mold hole is 1.1-150.
In this heating element manufacturing method, the exothermic composition molded body obtained by molding the surplus water exothermic composition laminated on the base material is coated with the coating material, and the base material and the coating on the peripheral portion of the exothermic composition molded body are coated. This is a method for producing a heating element by sealing a material, and the opening shape line of the mold hole of the molding die having the mold hole in the direction of the seal progress is a seal part that is a seal area and a space part that is a non-seal area The opening shape line of the space part of the seal mold having the inside of the mold part is not in contact with, overlapping with, or intersecting with the opening shape line of the mold hole. Further, the mold hole of the mold and the corresponding space of the seal mold have a relationship that the margin value is 0.1 to 60 and the height value is 1.1 to 150. In addition, it is possible to seal the peripheral portion of the exothermic composition molded body obtained by molding the excess water exothermic composition between the base material and the covering material with a high yield.

The height value of the present invention will be described.
The height value of the present invention is a value that defines the height of the seal-type space portion having the space portion.
In the cross-sectional shape of the mold hole corresponding to the arrangement position of the heat generating portion of the heat generating element, the height value indicates the relationship between the height of the mold hole of the mold and the height of the space portion of the seal mold corresponding thereto. It is a value obtained by dividing the height of the space portion of the seal mold by the height of the mold hole of the mold.
In the height value,
Regardless of the number of the sealing molds and the number of the space portions, the height of each space portion has a unique height value.
Further, the height of the seal-type space portion is not necessarily uniform.
Further, when the height of the mold hole of the mold is not uniform, at least the height of the space portion of the seal mold corresponding to the height of the mold hole of the mold is kept higher than the height of the mold hole of the mold. It is preferable. Further, the maximum height of the mold hole may be adopted as the height of the mold hole of the mold.
Further, the height of the space portion of the seal mold may be determined based on the maximum height of the mold hole of the mold.
If divided into cases,
1. When there is one seal mold with one space,

H = j / m
H: Height value of seal-type space
j: Height of seal-type space
m: mold hole height of the mold

2. If there is one seal mold with multiple spaces,
The following applies for each space.

H = j / m
H: Height value of individual space of seal type
j: Height of individual space part of seal type
m: mold hole height of the mold

3. When a pair of seal molds having one space part is
The following applies for each space.

H = j / m and H = k / m
H: Height value of the space of each seal type
j: Height of one seal-type space
k: the height of the space of the other seal type
m: mold hole height of the mold

4). When a pair of seal molds having a plurality of space portions,
The following applies for each space.

H = j / m and H = k / m
H: Height value of each space part of each seal type
j: Height of the individual space of one seal type
k: Height of the individual space of the other seal type
m: mold hole height of the mold

However, in the pair of seal molds, the combination of the seal molds is not limited as long as the seal can be made, and the combination of materials, shapes, etc. is not limited.
Moreover, there is no restriction | limiting in the presence or absence of heating, What is necessary is just to select suitably. Examples include 1) a seal type in which both are not heated, 2), a seal type in which only one is heated, and 3) a seal type in which both are heated.
Further, in the case of a molding die or a seal die having two or more space portions, the same as described above, and any of the matters described in 1), 2) and 3) can be applied to each space portion.
Further, it is preferable to provide a separating material such as a sponge-like body or a heat insulating material in at least a part of the space (inside the recess or in the through hole) so that the sealed body does not directly contact the seal-type space. . In that case, a separating material is arranged so that the seal is not affected even when the exothermic composition molded body collapses during sealing. In that case, you may make it go in the inner back part of this space part.

  The height value of the present invention will be described with reference to FIGS.

FIG. 25A is a cross-sectional view showing another example of the mold.
The mold hole 65 is a through-hole, and is a forming mold 64 having an opening 77 serving as an outlet on the lower side. The height of the mold hole 65 is indicated by m.
FIG. 25B is a cross-sectional view showing another example of the mold.
The mold hole 65 is a concave part and is a mold 64 having an opening 77 on the lower side, and the height of the mold hole 65 is indicated by m.

FIG. 26 is a cross-sectional view showing another example of a seal type.
In this example, two seal molds 66 and 66 are used, and seal portions 67 and 67 are faced to each other. The height j of the individual space 68 of one seal mold 66 and the height k of the individual space 68 of the other seal mold 66 face the openings 78, 78.

FIG. 27 is a schematic cross-sectional view illustrating the height value.
The seal portions 67 and 67 of the seal dies 66 and 66 face each other, and the mold hole 65 of the molding die is taken into the individual space portions 68 and 68.
Between the height m of the mold hole 65 of the mold and the heights j and k of the space portions 68 and 68 of the respective seal molds, the height value is 1.1 to 150. Therefore, the mold hole 65 of the mold, that is, the exothermic composition molded body of the mold hole size can be accommodated in the pair of seal-type spaces 68 and 68 with a margin.

FIG. 28 is a schematic cross-sectional view showing an example of a partial enlargement of the relationship between the space portion of the seal roll and the exothermic composition molded body sandwiched between the packaging materials.
Since the seal portions 67 and 67 of the seal molds 66 and 66 face each other and the space portions 68 and 68 have a height value of 1.1 to 150, the height is sandwiched between the base material 23 and the covering material 22. The exothermic composition molded body 37 is stored in the space portions 68 and 68 of the seal roll with a margin.
Since the blank portions 68 and 68 of the seal dies 66 and 66 have a margin value of 0.1 to 60, there is no influence on the seal by the collapsed pieces of the exothermic composition molded body 37.

FIG. 29 (a) is an explanatory plan view showing an example of the positional relationship between the mold hole of the mold and the space of the seal mold in the sealing direction of the present invention.
The positional relationship of the locus | trajectory of the space part 68 of the seal type | mold of a four-way seal which has the seal | sticker part 67 which performs the mold hole 65 of a shaping | molding die and the four-way seal in the moving direction G of the packaging material which is a seal | sticker direction is shown. The mold hole 65 and the space 68 are synchronized (synchronized), and the locus of the mold hole 65 is in the locus of the space 68, and the locus of the mold hole 65 is in contact with the locus of the space 68. There will be no overlap, no overlap, no intersection.
FIG. 29B is an explanatory plan view showing another example of the positional relationship between the mold hole of the molding die and the space portion of the seal die in the sealing direction of the present invention.
The positional relationship between the locus of the mold hole 65 of the molding die and the locus of the space portion 68 of the seal die of the two-side seal having the seal portion 67 that performs the lateral seal is shown in the moving direction G of the packaging material that is the sealing direction. The mold hole 65 and the space 68 are synchronized (synchronized), and the locus of the mold hole 65 is in the locus of the space 68, and the locus of the mold hole 65 is in contact with the locus of the space 68. There will be no overlap, no overlap, no intersection.
FIG. 30 is an explanatory cross-sectional view showing another example of the method for manufacturing a heating element of the present invention.
The manufacturing method of the heat generating body which consists of the manufacturing process of the exothermic composition molded object of this invention and a sealing process is demonstrated using figures. G is the direction of rotation or movement.
The manufacturing process of the exothermic composition molded body in the heating element manufacturing apparatus 15 is as follows.
The surplus water exothermic composition supplying device 1 of the present invention is provided at the inner lower portion of a hollow cylindrical rotating body 19 having a plurality of molded portions 16 on the peripheral surface, which is composed of a mold hole 65 which is a through hole, The surplus water exothermic composition supply device 1 and the external fixed magnet 26 smoothly fill the mold hole 65 with the surplus water exothermic composition 36 once, and the exothermic composition compact 37 on the substrate 23 that has been conveyed. Are stacked. Further, the exothermic composition molded body 37 laminated on the base material 23 is conveyed to the sealing step.
In the sealing step, the coating material 22 is coated on the base material 23 on which the exothermic composition molded body 37 that has been conveyed is laminated, and the margin value is 0.1 to 60, and the height value is 1. It is conveyed to a first seal roll 70 having a space portion (non-seal region) 68 having a relationship of 1 to 150. While the exothermic composition molded body 37 sandwiched between the base material 23 and the covering material 22 is taken into the space 68, the peripheral portion of the exothermic composition molded body 37 is heat-sealed, and the continuous heating element is connected to the exothermic body. 74 is formed. Furthermore, it is conveyed to the 2nd seal roll 71, and a predetermined | prescribed heat seal is carried out.
Next, it is sent to the cutting process, and is cut into individual heating elements 60 by the cut roll 73. In addition, the residue etc. of the excess water exothermic composition 36, such as the shaping | molding part 16 of the hollow cylindrical rotary body 19, are removed by the cleaner 30.
Since the exothermic composition molded body 37 obtained by molding the surplus water exothermic composition 36 of the present invention is basically connected to each component of the exothermic composition by water, it is caused by unnecessary friction of the covering material 22 during sealing. There is a risk of losing shape. Fragments of the exothermic composition molded body 37 that are scattered by the deformation of the mold enter the seal region and cause the seal to break. The space 68 of the seal rolls 70 and 71 of the present invention has a relationship that the margin value is 0.1 to 60 and the height value is 1.1 to 150 with respect to the mold hole 65. Since the exothermic composition molded body 37 sandwiched between the base material 23 and the covering material 22 can be taken into the space 68 with a margin, the exothermic composition molded body 37 that is a copy of the mold hole 65 and the seal A distance can be maintained between the end portion of the portion 67 and the exothermic composition molded body 37 can be sealed without breaking the seal. Even if it is slightly broken, there is no influence on the seal portion 67 of the heating element such as a seal breakage.
Further, a leveling roll 72 is provided between the second seal roll 71 and the cut roll 73, and the surface of the continuous heating element 74 connected to the heating elements conveyed from the sealing process is leveled, flattened, and cut. You may convey to.
When the seal is a pressure-bonding seal, an adhesive layer made of a mesh-like pressure-sensitive adhesive layer or the like is provided on the covering material 22 by an adhesive layer coating device 69 such as a pressure-sensitive adhesive coating device based on a melt blow method or the like. The exothermic composition molded body 37 laminated on the substrate may be covered and pressure sealed with the first seal roll 70. In this case, the first seal roll 70 and the second seal roll 71 do not need to be heated, and whether to heat them may be selected as appropriate.
Although not shown, an adhesive layer coating device such as an adhesive coating device based on a melt blow method and the like and a separator installation device are provided between the second seal roll and the cut roll, and the adhesive layer is applied to the sealed continuous heating element. A heating element provided with a network-like pressure-sensitive adhesive layer on the breathable side of the heating element by providing a pressure-sensitive adhesive layer composed of a network-like pressure-sensitive adhesive layer, etc. In addition, a heating element having an adhesive layer on the non-breathable side of the heating element can be manufactured and provided.
In addition, the rotating components are synchronized throughout the entire process from the exothermic composition molded body manufacturing apparatus 19 to the cut roll 73.

The sealing method shown in FIG. 30 is to seal the peripheral edge portion of the exothermic composition molded body 37 with the first seal roll 70 and the second seal roll 71. First, with the first seal roll 70, The peripheral portion of the exothermic composition molded body 37 sandwiched between the base material 23 and the covering material 22 is sealed, and the first seal portion is formed by the seal portion 67 of the first seal roll 70. Next, the second seal roll 71 seals the outer peripheral side of the first seal portion which is narrower than the first seal portion from the top of the first seal portion and located outside the peripheral portion of the exothermic composition molded body 37. The second seal portion is formed by the seal portion 67 of the second seal roll 71. By overlapping and sealing in this way, the strength of the seal can be increased.
Further, the seal width (second seal width) of the seal portion 67 of the second seal roll 71 that is the second seal type is the seal width (second seal width) of the seal portion 67 of the first seal roll 70 that is the first seal type. A single seal width) may be all weighted, and a double seal may be used.
In addition, it is not always necessary to have the entire circumference of the seal area to be sealed, and only the portion that needs to be increased in strength may be overlapped and sealed. For example, only the upper and lower ends of the heating element are overlapped. Sealing may be performed to form a seal portion of the heating element.

  In addition, when the seal is divided into a plurality of times, if the air discharge groove is provided in the first seal mold (first seal roll, etc.), the outside sealed by the first seal mold (first seal roll, etc.) In addition, the air can be extracted. In this case, the portion that is not sealed by the air discharge groove is sealed by the second seal mold (second seal roll or the like). Further, in the seal mold, the location where the air discharge groove is formed is not particularly limited.

  In addition, the first seal roll 70 has space portions (concave portions) 68 having a margin value of 0.1 to 60 and a height value of 1.1 to 150 arranged at predetermined intervals in the circumferential direction. The portion excluding the space portion (concave portion) 68 is a seal portion 67, the covering material 22 and the base material 23 are sandwiched between a pair of seal rolls, and the heat generating composition molded body 37 is sealed by the seal surfaces of the seal portions 67 and 67. Seal the periphery. Each seal roll is provided with a heat source (not shown) inside so that at least the seal surface is heated.

In the present invention, the second seal roll 71 performs sealing after sealing with the first seal roll 70. 1) The seal surfaces of the seal portions 67 and 67 of the first seal roll 70 and the second seal roll 71 are the same. When configured and sealed so that the first seal surface and the second seal surface all overlap, the second seal roll 71 has a margin value of 0.1 to 60 and a height value of 1.1 to 150. 2) The second seal roll 71 is formed with a space (recess) 68 having a slightly larger vertical and horizontal dimension than the space (recess) 68 of the first seal roll 70, and the space (recess) 68. The seal portion 67 around the outer periphery of the heat-generating composition molded body 37 is disposed in a region away from the peripheral edge portion, and seals the surface sealed by the first seal roll 70 while partially overlapping or not overlapping. In this case, the margin value is not limited to 0.1-60.
In addition, the margin value of the space portion of the seal mold after the second seal mold (second seal roll or the like) is larger than the space of the first seal mold when the vertical and / or horizontal dimensions of the seal mold are large. In the large area, the margin value is not limited to 0.1 to 60, and the margin value may be determined as appropriate.

Although not shown, it may be cooled by cooling means after the sealing and before entering the cut roll. In this cooling means, the sealing part sealed by the first and second sealing means is cooled to fix the sealing state. For example, the cooling means can be constituted by a pair of cooling rolls in which a refrigerant is arranged. . For example, the same structure as that of the first seal roll can be used. In addition, the cooled heat generating body applies a tension | tensile_strength to a coating | covering material and a base material, and is conveyed. A seal roll may be substituted. As shown in FIG. 30 , two pairs of seal rolls having a space portion that is a concave portion are provided, and each seal roll has an uneven sealing surface within a range in which a region other than the space portion that is a concave portion is sealed. It is a sealing surface.

  It is preferable that the molding and the sealing are continuous.

The sealing method of the present invention is a sealing method for a heating element using an excess water heating composition, and a sealing type having a space portion (non-sealing region) having a margin value of 0.1 to 60, or a margin value. Is not limited as long as the sealing method is a seal type having a space (non-sealing region) having a height value of 1.1 to 150 and a height value of 1.1 to 150,
1. In the sealing step, the sealing method is performed with two or more sealing molds, and sealing is performed so that at least a part of at least two sealing portions overlap,
2. A heating element sealing method for sealing with at least a sealing mold provided with a radius adjacent to an end of the heat generating composition molded body on the sealing surface;
3. A heating element sealing method in which a cross-sectional shape of the sealing surface is formed in a concavo-convex shape and sealed with a seal type provided with a pattern;
4). The seal of the heating element that seals with the seal type that forms a cross-section shape of the seal surface, which is the seal type seal part, is provided with a pattern, and is provided with a pattern at least at the tip part of all the convex parts toward the packaging material Method,
5. A rounded surface is provided adjacent to the end of the sealing surface, which is a seal-type sealing portion, on the side of the heat-generating composition, and a pattern is provided by forming the cross-sectional shape of the sealing surface in an uneven shape, at least toward the packaging material. , A heating element sealing method that seals with a seal type provided with a round at the tip of all convex parts,
6). A heating element sealing method in which a cross-sectional shape of the sealing surface is formed in a flat shape on the side of the heat generating composition molded body to be a non-pattern, and is connected to the non-pattern and formed in a concavo-convex shape and sealed with a seal mold having a pattern, .
7). A method of sealing a heating element, wherein the sealing surface is sealed with a sealing mold provided with a different pattern on the side of the heat generating composition molded body side and on the opposite side,
8). A heating element sealing method in which the pattern is sealed with a sealing mold provided only on one side of a chemical warmer.
9. A heating element sealing method for sealing so that at least a part of the sealing portion overlaps,
10. A heating element sealing method that seals multiple times according to the direction to be sealed,
11. Use two or more seal molds, first seal with one seal mold, leaving an exhaust groove for drawing air from the excess water exothermic composition side to the outside in the seal portion, and then with the other seal mold A heating element sealing method for sealing the exhaust groove,
12 A heating element sealing method for sealing a packaging material containing an excess water exothermic composition containing iron powder, and adjacent to an end of the seal surface seal portion, which is a seal type seal portion, on the excess water exothermic composition side. Iron powder that is sealed with a seal type that has a rounded shape and has a pattern by forming the cross-sectional shape of the sealing surface in a concave-convex shape, and is provided with a rounded shape at the tip of all convex portions, at least toward the packaging material A heating element sealing method comprising: first sealing with a first sealing mold, then sealing with a second sealing mold with a seal width narrower than that of the first sealing mold; Using the mold and the second seal mold, the seal is first sealed from the first seal mold, leaving an exhaust groove for extracting air from the surplus water heating composition side to the outside, and then the second seal Sealing of the heating element that seals the exhaust groove with a mold ,
13. 1 above. -12. An example of the heating element sealing method is a combination of at least two heating element sealing methods.

  When the seal is a heat seal, the first sealing means is directed to a pair of heat sealing rollers in which a heat source is disposed inside the continuous base material on which the exothermic composition molded body having a predetermined shape is laminated. Are transported. Apart from this, a continuous body of coating material is conveyed by a pair of heat seal rollers in which a heat source is arranged. The heat seal roller is heated to a predetermined temperature. And the base material and coating | covering material of a continuous body are piled up in the contact part of a heat seal roller, and the exothermic composition molded object located on the continuous body of a base material is coat | covered with the continuous body of coating | covering material. At the same time, a continuous body of heating elements in which the base material of the continuous body and the covering material of the continuous body are heat-sealed at the peripheral edge of the heat-generating composition molded body by the clamping pressure by the heat seal roller, and the heating elements are connected. Is formed.

The sealing temperature of the present invention is not limited, but in the case of heat sealing, the temperature of the sealing part (unevenness of the sealing part, sealing blade, etc.) is preferably 120 to 200 ° C, more preferably 120 to 195 ° C. More preferably 120 to 190 ° C, still more preferably 120 to 185 ° C, still more preferably 120 to 180 ° C, still more preferably 120 to 175 ° C, still more preferably 120 to 170 ° C. More preferably, it is 120-165 degreeC, More preferably, it is 120-160 degreeC.
The sealing temperature range is preferably 120 to 165 ° C. when the sealing speed is low, preferably 165 to 175 ° C. for medium speed, and preferably 175 to 175 ° C. for high speed. 200 ° C., and these are given as a preferred example. It is preferable to select appropriately according to the speed.

  On the outer peripheral surface of the heat seal roll, there are a vertical seal surface arranged in the circumferential direction, and a horizontal seal surface arranged in the axial direction so as to correspond between the exothermic composition molded bodies on the packaging material. A heat seal portion is formed by sandwiching and sealing the packaging material containing the exothermic composition molded body between the sealing surfaces provided in a convex shape and heated by an internal heat source.

  The vertical seal surface and the horizontal seal surface are both arranged along the peripheral edge of each exothermic composition molded body so as to correspond to the vicinity thereof, and the formed heat seal portion is formed of the exothermic composition molded body. It comes close to the periphery.

  The second sealing means re-seals the seal portion formed by the first sealing means, and includes a pair of sealing rolls in which a heat source is disposed, as in the first sealing means. Further, the vertical seal may be divided into the seal roll of the second seal means, and the horizontal seal may be divided into the seal rolls of the third seal means.

  Further, the seal roll on the third seal means side is provided with, for example, a lateral seal surface in the axial direction corresponding to the lateral seal surface on the first seal means side. For example, the lateral seal surface is formed thinner than the lateral seal surface on the first seal means side, and the seal portion formed by the first seal means is sealed again to form a re-seal portion. ing.

When the seal is a pressure-bonding seal, the pressure-sensitive seal is performed by a pressure-bonding seal roll using an adhesive layer made of an adhesive. The pressure-bonding seal roll is not limited as long as it is a seal roll having a pressing function, but a clearance management seal roll is an example. Specifically, a flat roll, an embossing roll, a metal roll, a rubber roll, etc. are mentioned as an example. For example, a continuous base material on which a heat generating composition molded body of a predetermined form is laminated is coated with a coating material, and heat is generated with the coating material by a pressure-bonding seal roll through an adhesive layer such as a breathable adhesive layer. The peripheral edge of the molded product is pressure-bonded and sealed to produce a continuous body of heating elements.
The breathable pressure-sensitive adhesive layer is provided with a hot melt pressure-sensitive adhesive such as SIS as a network-like breathable pressure-sensitive adhesive layer by a melt blow method. A covering material that is provided and not provided with an adhesive layer made of an adhesive may be covered and pressure-bonded in the same manner. The pressure-bonding seal roll may be heated to a predetermined temperature. The pressure-bonding seal roll may be two or more than three.
As an example of the pressure-bonding seal, a continuous base material in which a heat-generating composition molded body of a predetermined form is laminated is covered with a covering material, and is pressed by a pressure-bonding seal roll through a pressure-sensitive adhesive layer such as a breathable pressure-sensitive adhesive layer. The peripheral part of the heat-generating composition molded body is pressure-bonded together with the covering material to produce a continuous body of the heat-generating body.

  The heating element manufacturing method of the present invention is performed using a molding die having a mold hole, a sealing die having a seal portion and a space portion (non-sealing region), and the margin value is 0.1 to 60, When the height value is 1.1 to 150, even if the exothermic composition molded body molded by molding is somewhat collapsed due to deformation of the covering material at the time of sealing, the fragments do not enter the seal area, A seal with no seal breakage can be formed, and the yield during production of the heating element is significantly improved.

  The margin value is from 0.1 to 60, preferably from 0.1 to 50, more preferably from 0.1 to 40, still more preferably from 0.1 to 30, and even more preferably from 0. 1 to 20, more preferably 0.2 to 20, more preferably 0.3 to 20, more preferably 0.4 to 20, and still more preferably 0.5 to 20, More preferably, it is 0.5-17, More preferably, it is 0.5-15, More preferably, it is 0.5-13, More preferably, it is 0.5-10, More preferably, it is 0.5 To 9, more preferably 0.5 to 8, more preferably 0.5 to 7, more preferably 0.5 to 6, still more preferably 0.5 to 5, and further Preferably it is 1-5, More preferably, it is 2-5.

  The height value is preferably 1.1 to 150, more preferably 1.1 to 140, still more preferably 1.1 to 130, still more preferably 1.1 to 120, and further Preferably it is 1.1-110, More preferably, it is 1.1-100, More preferably, it is 1.1-90, More preferably, it is 1.1-80, More preferably, it is 1.1- 70, more preferably 1.1 to 60, still more preferably 1.1 to 50, still more preferably 1.1 to 40, still more preferably 1.1 to 30, and even more preferably. Is 1.1 to 25, and more preferably 1.1 to 20.

C. The heating element manufacturing method 8) of the present invention, which is another heating element manufacturing method of the present invention, will be described. In a heating element manufacturing method using a smooth filling method in which a surplus water exothermic composition supplying device is provided at the inner lower part of a rotating body, and a molding portion provided on a peripheral surface of a hollow cylindrical rotating body is a through hole There is . A description will be given with reference to FIG. Using the surplus water heating composition supply device 1 having the blade 6 in contact with the inner peripheral surface 10B of the hollow cylindrical rotating body 19, the through hole 17 adapted to the shape of the heat generating part at predetermined intervals on the entire peripheral surface. A base material 23 supported by an external endless belt 28 is supplied near the lowest rotation point B on the outside of the hollow cylindrical rotating body 19, and the through hole 17 is bottomed out. The blade 6 that contacts the inner peripheral surface 10B of the rotating body 19 with the surplus water heating composition supplied from the supply device 1 disposed near the lowest rotation point B inside the body 19 and the corresponding contact position Corresponding to C, the outer fixed magnet 26 provided under the outer endless belt 28 is smoothly filled (one time smooth filling) into the molding part 16 which is the through hole 17 in one step, and at the same time the surface thereof is adjusted. The excess water-containing exothermic composition is added to the inner peripheral surface 10B of the rotor. Ri is removed, laminated exothermic composition shaped body on the substrate 23. Next, the coating material 22 supplied from a coating material supply roll (not shown) is coated on the exothermic composition molded body on the base material 23, and the peripheral portion of the exothermic composition molded body is sealed with a seal roll 31. Then, it is cut into a predetermined shape with a cut roll (not shown) to obtain a heating element. After the heating composition molded body is laminated on the base material 23, the inner wall of the molding portion 16 of the rotating body 19 is cleaned with a cleaner 30. To do.

D. The heating element manufacturing method 9) of the present invention, which is another heating element manufacturing method of the present invention, will be described. Excess water heating composition supply device is provided at the inner lower part of the rotating body, the rotating body is a chain conveyor-like rotating body, and the heat is generated by a smooth filling method in which the molding part is a through hole provided in a sea-shaped mold. It is a body manufacturing method . A description will be given with reference to FIG. Using the supply device 1 having the spring-type automatic movable blade 11 that contacts the sheet-shaped inner surface 10C of the chain conveyor-shaped rotating body 20, the sheet-shaped mold 21 having one or more through-holes adapted to the shape of the heat generating portion is connected. The base material 23 supported by the external endless belt 28 is supplied near the lowest rotation point B on the outer side of the chain conveyor-like rotating body 20, the through hole is bottomed, and the inner side of the chain conveyor-like rotating body 20 Corresponding to the corresponding contact position C, and the spring-type automatic movable blade 11 that contacts the sheet-shaped inner surface 10C of the chain conveyor-like rotating body 20 provided in the supply device 1 disposed near the lowest point B of the rotation. With the external fixed magnet 26 provided under the external endless belt 28, the excess water heating composition is smoothly filled (one time smooth filling) into the molding part which is a through hole in one step. Trimmed surface is removed from the surface of the sheet-type 21 extra including excessive water heat-generating composition. Next, the sheet-like mold 21 is separated from the base material 23, and the exothermic composition molded body is laminated on the base material 23. Next, the coating material 22 supplied from a coating material supply roll (not shown) is coated on the exothermic composition molded body on the base material 23, and the peripheral portion of the exothermic composition molded body is sealed with a seal roll 31. And it cuts into a predetermined shape with a cut roll (not shown), and obtains a heat generating body. After the exothermic composition molded body is laminated on the base material 23, the inner wall of the through hole of the sheet mold 21 is cleaned with a cleaner 30.

E. It is another heating element manufacturing method of this invention.
Using an excess water heating composition, a mold forming step for forming a mold and a seal step for sealing are essential steps. The seal includes a mold having a mold hole, and a seal mold having a space portion and a seal portion. The space of the seal mold is a distance between at least the opening shape line of the mold hole of the mold and the corresponding opening shape line of the space of the seal mold with respect to the mold hole. The margin value, which is a value obtained by dividing the margin distance by the height of the mold hole, has a relationship of 0.1 to 60, and the surplus water exothermic composition supply device is provided at the inner lower portion of the rotating body. In the heating element manufacturing method according to the one-time smooth filling method, the molding portion provided on the peripheral surface of the hollow cylindrical rotating body is a through hole.

F. It is another heating element manufacturing method of this invention.
Using an excess water heating composition, a mold forming process for molding and a sealing process for sealing are essential processes, and the seal includes a mold having a mold hole, and a seal mold having a space portion and a seal portion. The space of the seal mold is a distance between at least the opening shape line of the mold hole of the mold and the corresponding opening shape line of the space of the seal mold with respect to the mold hole. The margin value, which is a value obtained by dividing the margin distance by the height of the mold hole, has a relationship of 0.1 to 60, and the surplus water exothermic composition supply device is provided at the inner lower portion of the rotating body. In the heating element manufacturing method according to the one-time smooth filling method, the rotating body is a chain conveyor-like rotating body, and the molding part is a through-hole provided in the sea-shaped mold.

G. It is another heating element manufacturing method of this invention.
Using an excess water heating composition, a mold forming step for forming a mold and a seal step for sealing are essential steps. The seal includes a mold having a mold hole, and a seal mold having a space portion and a seal portion. The space of the seal mold is a distance between at least the opening shape line of the mold hole of the mold and the corresponding opening shape line of the space of the seal mold with respect to the mold hole. The margin value, which is a value obtained by dividing the margin distance by the height of the mold cavity, has a relationship of 0.1 to 60, and the surplus water exothermic composition supply device is disposed outside the hollow cylindrical rotating body. This is a heating element manufacturing method in which filling in a molding portion (concave portion or the like) provided on the peripheral surface of a hollow cylindrical rotating body is a one-time smooth filling method.

H. It is another heating element manufacturing method of this invention.
In the heating element manufacturing method according to any one of E, F, and G, the seal mold space portion has an opening shape line of the mold hole of the mold and a corresponding seal space corresponding to the mold hole. The margin value, which is a value obtained by dividing the margin distance, which is the distance between the opening shape line of the portion, by the height of the mold hole, is 0.1-60, and the height of the space portion is the die It is a heating element manufacturing method having a relationship in which the height value, which is a value divided by the height of the hole, is 1.1 to 150.

The sealing mold and the sealing device of the present invention are for a heating element produced using a surplus water heating composition having iron powder, preferably a heating composition molded body that is a molded body, and the mold hole of the molding mold And a seal type having a space portion and a seal portion with a margin value of 0.1 to 60 and a height value of 1.1 to 150, and a seal device using the seal die. If there is no limit,
1. A seal mold in which a cross-sectional shape of at least a part of the seal surface is formed in an uneven shape to provide a pattern;
2. A seal mold in which a cross-sectional shape of the sealing surface is formed in a flat shape on the exothermic composition molded body side to be a non-pattern, connected to the non-pattern and formed in a concavo-convex shape,
3. Seal type with different patterns on the seal side, one side and the other side,
4). A seal mold provided with a groove on the seal surface for discharging air from the exothermic composition molded body side to the opposite side at the time of sealing,
5. A seal mold provided with a radius adjacent to the end portion of the heat generating composition molded body side of the seal surface;
6). A sealing mold in which the cross-sectional shape of the sealing surface is formed in a concavo-convex shape to provide a pattern, and the concavo-convex portion is provided with a round at the corner of the convex portion,
7). A seal mold composed of two or more independent seal molds in which at least two seal molds having different seal surface (seal part) sizes are combined;
8). An example is a sealing device provided with at least two or more selected from the sealing molds described in any one of 1 to 7 above.

The shape of the mold hole of the molding die and the shape of the space of the seal die are not limited, and may be similar or non-similar.
1) When the shape of the space portion of the seal mold has a shape along the shape of the mold hole,
The value obtained by dividing the margin distance, which is the distance between the opening shape line of the mold hole of the mold and the opening shape line of the space portion of the seal mold corresponding to the mold hole, by the height of the mold hole. Within a range in which a certain margin value is 0.1 to 60, and a height value that is a value obtained by dividing the height of the space portion by the height of the mold hole is 1.1 to 150. In consideration of the seal width, it is preferable to determine the shape of the space along the shape of the mold cavity.
2) When the shape of the space portion of the seal mold is different from the shape of the mold hole,
The value obtained by dividing the margin distance, which is the distance between the opening shape line of the mold hole of the mold and the opening shape line of the space portion of the seal mold corresponding to the mold hole, by the height of the mold hole. Within a range in which a certain margin value is 0.1 to 60, and a height value that is a value obtained by dividing the height of the space portion by the height of the mold hole is 1.1 to 150. The shape of the desired space is preferably determined in consideration of the seal width.

The surplus water exothermic composition supply device of the present invention is a device that uses a blade to smoothly fill the surplus water exothermic composition in the vicinity of the molding part of the mold into the molding part at a time (smooth filling once). is there.
A surplus water exothermic composition supply device, a hollow rotating body having a molding part formed of one kind selected from a through hole and a concave portion on the peripheral surface, and a base material supply device for supplying the base material to the peripheral surface of the rotating body In the surplus water exothermic composition supplying apparatus used in the heating element manufacturing apparatus that continuously manufactures the heating element through the lamination of the exothermic composition molded article formed by smooth filling once to the base material, The surplus water exothermic composition supply device is composed of a replenishment section that contains the surplus water exothermic composition containing iron powder and a smooth filling section that is connected to the replenishment section. The smooth filling portion has a blade that contacts the surface of the molded portion of the rotating body having a hollow tip, and the magnet is opposite to the blade on the peripheral surface of the rotating body at a position corresponding to the contact position of the blade. On the side, prepare not to move along the rotation of the rotating body, It consists of a plate-like body having a straight portion and a tip portion with a thickness of 0.1 to 30 mm, the blade contact angle is 95 ° to 170 °, and the rotation of the rotating body includes the vicinity of the forming portion. A surplus water exothermic composition is smoothly filled once into the molding part, and at the same time, an excess water exothermic composition excluding the molding part is removed from the rotating body, and an exothermic heat generation using the same Body manufacturing apparatus, heating element manufacturing method, heating element,
The exothermic exothermic exothermic composition supply device of the present invention and the extraneous water exothermic composition enable molding of the exothermic composition, and it was impossible to manufacture by a method using a conventional powdery exothermic composition. This makes it possible to produce heating elements of various shapes and sizes. As for the thickness of the through-hole and recessed part of a shaping | molding part, 0.1-10 mm is preferable.
In addition, the surplus water heating composition supply device of the present invention has a blade contact angle that is an angle formed by the extension line of the straight line portion on the side opposite to the peripheral surface side of the blade and the tangent line of the peripheral surface at the contact position. It is a surplus water exothermic composition supply device having a contact angle (θt), and more preferably, it extends in a direction opposite to the direction of travel of the circumferential surface and a straight line connecting the center point of the contact position and the three-dimensional center point described later. The surplus water exothermic composition supply device having a blade whose angle is the contact angle of the blade with the surplus water exothermic composition side formed by a tangent or a surface extension line at the center point of the contact position.

The surplus water exothermic composition supply device of the present invention is not limited as long as the surplus water exothermic composition supply device has a blade and can supply the surplus water exothermic composition. preferable.
That is, the surplus water exothermic composition supply device of the present invention is a device having functional elements such as a blade, a replenishing section, and a smooth filling section, but is an integrated surplus water exothermic composition that integrates these functional elements. There is a supply device and a separation-type surplus water exothermic composition supply device in which these functional elements are removable. As a separation-type surplus water exothermic composition supply device,
1) A surplus water exothermic composition supply device in which a blade is detachably attached to a device in which a replenishment unit and a smooth filling unit are integrated with a bolt, a fixture, a blade fixture, etc.
2) A surplus water exothermic composition supply device, which is assembled by attaching a blade, a replenishing unit, and a smooth filling unit detachably with bolts, attachments, fixtures, etc., is an example.

The surplus water-containing exothermic composition of the present invention has moldability, but basically, surplus water collects the components of the exothermic composition and imparts fluidity. Compared to a powder exothermic composition containing no water, the moldable excess water exothermic composition is easy to stick and bridging, and when the excess water exothermic composition is pressed, The surplus water is separated, and the surplus water exothermic composition is remarkably deteriorated in fluidity, and the surplus water exothermic composition cannot be continuously formed. That is, in the method of pushing the excess water exothermic composition into the molded part by the pushing means, indentation unevenness occurs, the surface of the pushed excess water exothermic composition becomes uneven, indentation unevenness occurs, and the productivity is low. Further, a bridge of the excess water exothermic composition is generated, and the excess water exothermic composition is not filled in the through-holes and recesses of the molded part, and continuous production cannot be performed. The ease with which the bridge is generated increases as the production speed increases, and the bridge is easily generated.
In the present invention, since the blade having a blade contact angle (θt) of 95 ° to 170 ° is used, the surplus water exothermic composition is used while maintaining the fluidity of the surplus water exothermic composition. Smooth smooth filling, no filling unevenness, and smooth smooth filling once in the molding part, enabling high-speed production.

The surplus water exothermic composition supply device has a one-time smooth filling (abrasive filling) position that is a contact position of the blade (abraded piece), and a placement position of the exothermic composition molded body on the substrate.
(1) The single smooth filling (fraying filling) position is on the upper side of the rotating body, and the mounting position is on the lower side of the rotating body.
(2) The single smooth filling (scraping filling) position is on the intermediate part side of the rotating body, and the mounting position is on the upper side of the rotating body.
(3) One type selected because the smoothing filling (wearing filling) position and the mounting position once are on the lower side of the rotating body.
Moreover, the surplus water exothermic composition supply apparatus does not require a pump for feeding under pressure or an extrusion nozzle, and can be smoothly filled once into a molding part such as a through hole or a recess.

About the blade of the present invention,
1) The blade is composed of a plate-like body having a straight portion and a tip portion having a thickness of 0.1 to 30 mm.
2) The shape of the tip of the blade is not limited as long as smooth filling (scraping filling) can be performed once. ), A square (a shape including at least a part of a straight intersection), and the like. The curved portion of the semi-arc-shaped blade and the arc-shaped blade is not limited, but the radius is a radius of curvature, preferably 0.1 to 30 mm, more preferably 0.5 to 30 mm, and still more preferably. It is 1-30 mm, More preferably, it is 1-20 mm, More preferably, it is 1-10 mm. There is no limitation as long as the surface of the blade containing excess water exothermic composition that has been smooth-filled (scraped and filled) once is not roughened.
3) The blade comes into contact with the peripheral surface corresponding to the molded part of the rotating body whose tip is hollow. The contact angle (θt) of the blade is 95 ° to 170 °.
4) The blades are provided in one or one row at a position corresponding to the molding portion in the axial direction of the rotating body so as to cover the region where the molding portion is formed, and the rotation direction of the rotating body Are fixed to the surplus water exothermic composition supply device at an angle so as to face each other.
5) The blade is composed of a fixed type, a movable type (manual movable type, automatic movable type), an angle adjustment type, and a combination thereof, and may be appropriately selected and used. The fixed type is fixedly attached to the surplus water exothermic composition supply device and cannot be moved forward and backward in the contact direction. The manual movable type has a movable mechanism such as a combination of bolts and nuts. It has a structure that can be manually advanced and retracted in the contact direction. The automatic movable type has a structure that can automatically advance and retreat in the contact direction, and examples thereof include a spring type, a rubber type, and a balloon type. In the angle adjustment type, the contact angle of the blade can be adjusted. The automatic movable blade is a blade (scraped piece) having a function of automatically moving back and forth in the contact direction according to the undulation of the peripheral surface while the blade (scraped piece) is in contact with the peripheral surface of the rotating body. .
6) The blade is in contact with the molding portion including the through hole or the concave portion on the peripheral surface and the peripheral portion thereof, and has a width capable of covering all the molding portions.
7) The blade corresponds to the magnet installed so as not to move in the rotating direction of the rotating body, and is provided so as to overlap.
8) The blade may be any blade as long as the surplus water heating composition of the present invention is pushed into the mold, but is preferably a plastic such as acrylic resin, vinyl chloride resin or polyethylene, metal such as iron or stainless steel, or a composite thereof. Is given as an example. Another example is a plate having springiness.
9) The straight portion of the blade is a straight portion on the side opposite to the peripheral surface of the blade, and the shape is a straight line or a substantially straight line (including those having a curvature radius of 50 mm or more).

The contact angle (θt) of the blade of the present invention is an angle formed by an extension line of a straight portion on the side opposite to the peripheral surface of the blade and a tangent line of the peripheral surface at the contact position. The contact angle (θt) of the blade and the center point of the contact position with the peripheral surface of the blade or the sheet-like mold surface and the three-dimensional center point of the blade opening or blade attachment portion of the surplus water heating composition supplying device Is an angle on the side of the surplus water exothermic composition, which is formed by a straight line connecting the tangent line and a tangential line or a surface extension line at the center point of the contact position extending in a direction opposite to the traveling direction of the peripheral surface, and is 95 ° to 170 °. It is.
Here, the three-dimensional center point is the center point of the three-dimensional space defined by the opening surface defined by the height, width, diameter, etc. of the blade opening of the surplus water heating composition supply device and the depth connected thereto. It is. Further, when the blade is fixed to the inner wall of the surplus water heating composition supply device by welding or the like, the three-dimensional center point is the center point of the blade mounting portion surface that is the inner wall surface occupied by the blade. The contact angle (θt) of the blade of the present invention is preferably 95 ° to 170 °, more preferably 100 ° to 170 °, still more preferably 100 ° to 160 °, and further preferably 100. It is (degree)-150 degrees, More preferably, it is 110 degrees-150 degrees, More preferably, it is 120 degrees-150 degrees.
If the contact angle (θt) is smaller than 95 °, bridging is likely to occur, and if it is larger than 170 °, smoothing becomes difficult and smooth filling may be difficult.

The smooth filling (single smooth filling) of the present invention means filling with a blade and a fixed magnet provided so as not to move along with the rotation of the rotating body while scraping off the surplus water heating composition to the molding part. Then, an exothermic composition molded body having a smooth surface is prepared. This is achieved by one-stage scraping filling (one smooth filling) with a blade and a magnet.
The structure in which smooth filling is performed in one step with a blade and a magnet means that the smoothing and filling are performed in one step with a blade and a magnet at the same time. It is a structure performed in

As shown in FIG. 1, the excessive water heating composition is not filled into the molding part by the inner walls of the replenishing part and the smooth filling part, and is smoothly filled only once with only the blade and the magnet.
On the other hand, in the case of a two-stage method in which filling at the inner wall of the surplus water exothermic composition supply device and fraying filling with a blade and a magnet are performed twice, in the molded portion of the surplus water exothermic composition that has been frayed and filled The surface of the filled exothermic composition molded body becomes uneven, filling irregularities occur, and smooth filling is impossible.

In the horizontal cross section of the surplus water exothermic composition supply device, the area of the outer wall of the replenishing part (the horizontal cross-sectional area formed by the outer wall of the replenishing part) is the area of the space part at the bottom of the smooth filling part (the smooth filling) A surplus water exothermic composition supply device smaller than the horizontal cross-sectional area formed by the inner wall of the bottom of the part is preferred.
In the horizontal cross section of the surplus water exothermic composition supplying device, the horizontal cross sectional area formed by the outer wall of the replenishing portion is the area of the space portion at the bottom of the smooth filling portion (formed by the inner wall of the bottom of the smooth filling portion. In a cylindrical head having a thick outer wall that is larger than the horizontal cross-sectional area, the total weight is larger than the amount of the surplus water heating composition that can be accommodated, and it is difficult to handle. Further, during continuous production of the heating element, bridging of the excess water exothermic composition is likely to occur, and there is a risk of insufficient supply of the excess water exothermic composition at the bottom of the smooth filling portion.
That is, the horizontal cross-sectional area formed by the outer wall of the replenishing portion of the surplus water heating composition supply device of the present invention is the area of the space portion at the bottom of the smooth filling portion (formed by the inner wall of the bottom of the smooth filling portion. The surplus water exothermic composition supply device smaller than the horizontal cross-sectional area is preferable because it can be applied to high-speed production of the heating element.

  The hollow rotating body of the present invention is not limited as long as it is hollow and the mold is rotating, but examples thereof include a hollow cylindrical rotating body and a chain conveyor-like rotating body. Although there will be no restriction | limiting if a shaping | molding part can be shape | molded, A through-hole and a recessed part are mentioned as an example.

The tangent at the contact position (contact portion, contact point) of the peripheral surface of the rotating body of the blade of the present invention is such that the peripheral surface is a sheet-shaped mold surface in the case of a rotating body such as a chain conveyor-shaped rotating body. Since it is straight, the tangent is a surface extension of the surface.
The surface of the forming part is the peripheral surface in the case of a hollow cylindrical rotating body, and the surface of a sheet-shaped mold in the case of a chain conveyor-like rotating body.

  The hollow rotating body peripheral surface of the present invention means the outer peripheral surface or inner peripheral surface of the hollow rotating body.

In the present invention, the surplus water exothermic composition supply device using a blade comprising at least one of an angle-adjustable blade, a movable blade, and a detachably attached blade is preferable. Further, depending on the characteristics of the excess water exothermic composition, a rotary type excess water exothermic composition bridging prevention device may be provided in the excess water exothermic composition supply device.

  The rotary surplus water exothermic composition bridging prevention device of the present invention can be installed at least in the upper part of the surplus water exothermic composition supply apparatus, has an opening in the upper part, and has one or more rotatable blades (a spatula shape) in the lower part. The surplus water heat generating composition can be supplied from the outside to the inside of the surplus water heat generating composition supply device through the opening by means of conveying means such as a screw conveyor or a belt conveyor, and the surplus water heat generation by the blades. It is an apparatus that can move the composition and prevent bridging of the excess water exothermic composition. It is preferable that the blade can rotate and move along the inner wall of the surplus water exothermic composition supply device. The rotary type surplus water exothermic composition bridging prevention device does not have a function of stirring the entire surplus water exothermic composition in the surplus water exothermic composition supply device.

  About the surplus water exothermic composition supply apparatus of this invention, the thing of the structure which can prevent the physical-property change of a surplus water exothermic composition as much as possible, and can supply smoothly is good. Preferably, a sensor for detecting the accumulated amount in the surplus water exothermic composition supply device is provided in the vicinity of the discharge port, and the surplus water exothermic composition supply device is supplied to the surplus water exothermic composition supply device by a sensor signal. The structure of controlling and maintaining a surplus water exothermic composition in a proper state and carrying out smooth filling is mentioned.

  The fixed magnet used for smooth filling and lamination on the substrate of the present invention includes an external fixed magnet and an internal fixed magnet, and either an electromagnet or a permanent magnet can be applied. Examples include magnets that are used as they are, self-rotating magnets in which magnets are arranged in hollow rolls, or magnets provided on the inner walls of hollow rolls and the like.

The thickness (height) of the through hole and the recess of the molded part of the present invention is 0.1 to 10 mm, preferably 0.1 to 9 mm, more preferably 0.1 to 8 mm, and still more preferably. 0.
It is 1-7 mm, More preferably, it is 0.1-6 mm, More preferably, it is 0.1-5 m
m, more preferably 0.2 to 5 mm, still more preferably 0.3 to 5 mm, still more preferably 0.4 to 5 mm, and still more preferably 0.5 to 5 mm.

Hereinafter, an embodiment of a surplus water exothermic composition supply device of the present invention is described in detail based on a drawing.
As shown in FIG. 1, the surplus water exothermic composition supply device 1 of the present invention comprises a replenishment section 2 for replenishing the surplus water exothermic composition, and a smooth filling section 3 connected to the replenishment section 2, with the molding section on the peripheral surface The upper part of the hollow substantially cylindrical replenishment part 2 is opened as a surplus water heating composition inlet, the lower part is opened as a smooth filling part 3 and the inner part is contained. The surplus water exothermic composition comes into contact with the peripheral surfaces 10A and 10B of the rotating body. The blade 6 is detachably attached to the surplus water exothermic composition supply device 1 by a blade fixing tool 7.
The blade 6 is in contact with the peripheral surfaces 10A and 10B of the rotating body at the contact position C.
The surplus water exothermic composition supply device 1 is close to the peripheral surfaces 10A and 10B of the rotating body with a small distance, and the skirt 5 on the opposite side of the blade 6 is in contact with the peripheral surface. The surplus water exothermic composition is continuously or intermittently supplied from the outside to the upper opening of the replenishing unit 2. 3A is the inner side of the blade opening or the inner side of the blade mounting portion, 4 is the inner wall, 4A is the outer wall, and G is the direction of rotation.

  A blade 6 is provided in the smooth filling portion 3, the contact position C with the peripheral surfaces 10A and 10B of the rotating body corresponds to the fixed magnet 14, and the blade 6 and the vicinity of the forming portion are rotated by the rotation of the rotating body. The excess water exothermic composition is smoothly filled once into the molded part. The blade 6 is arranged so that the contact angle (θt) is maintained at 95 ° to 170 °.

  The surplus water exothermic composition supply device 1 may be disposed on the outer upper part, outer intermediate part, and inner lower part of the hollow rotating body, but the tip of the blade 6 is respectively the outer peripheral surface 10A or the inner part of the rotating body. It is in contact with the peripheral surface 10B.

  The surplus water exothermic composition supply device 1 includes the surplus water exothermic composition that has been smoothly filled once with the surplus water exothermic composition into the molding part and then has not been smoothly filled once with the blade 6 and the molding part. By moving upward along the tip of the blade 6, the surplus water heating composition in the vicinity of the tip of the blade 6 is continuously and smoothly filled once smoothly into the molded part without causing a bridge. Thus, it is possible to continuously mold exothermic composition molded bodies having various shapes and thicknesses.

2 to 6 show the relationship between the blade 6 and the fixed magnet 14 (an external fixed magnet provided outside the hollow rotating body, an internal fixed magnet provided inside the hollow rotating body, etc.) and the molding portion 16. The excessive water-containing exothermic composition 36 is smooth-filled (rubbed and filled) once into the molding part 16. The blade 6 corresponds to the fixed magnet 14 disposed on the opposite side to the blade 6 of the forming portion 16 and is provided so as to overlap. The blade 6 contact angle (θt) is set to 95 ° to 170 °. ing. G is the moving direction of the molding part 16 (mold). Reference numeral 10 denotes a mold (a circumferential surface or a sheet-shaped mold surface).

FIG. 2 is a cross-sectional view showing an example of the blade 6 having a blade shape. The front end portion is in contact with the peripheral surface or the sheet-like mold surface 10 having the molded portion 16 bottomed on the base material 23 or the like. The contact angle of the blade 6 between the tangential line of the peripheral surface at the contact position C or the surface extension line X of the sheet-like mold surface and the extension line 9 of the side portion 8 on the side opposite to the peripheral surface where the blade 6 contacts is θt. The tip of the blade 6 is located in front of the moving direction G of the molding portion 16, including the perpendicular line Y, with respect to the tangent line of the circumferential surface at the contact position C or the perpendicular line Y to the surface extension line X of the sheet-like mold surface.

FIG. 3 is a cross-sectional view showing an example in which the blade 6 has a wedge shape. The contact angle of the blade 6 between the tangential line of the peripheral surface at the contact position C or the surface extension line X of the sheet-like mold surface and the extension line 9 of the side portion 8 on the side opposite to the peripheral surface where the blade 6 contacts is θt. The tip of the blade 6 moves from the tangent line of the peripheral surface at the contact position C or the normal line Y to the surface extension line X of the sheet-like mold surface, including the vertical line Y, and the movement of the molding part 16 bottomed on the base material 23 or the like On the front side in direction G.

FIG. 4 is a cross-sectional view showing an example where the blade 6 is a semicircular arc blade 6. The contact angle of the blade 6 between the tangential line of the peripheral surface at the contact position C or the surface extension line X of the sheet-like mold surface and the extension line 9 of the side portion 8 on the side opposite to the peripheral surface where the blade 6 contacts is θt. The tip of the blade 6 moves from the tangent line of the peripheral surface at the contact position C or the normal line Y to the surface extension line X of the sheet-like mold surface, including the vertical line Y, and the movement of the molding part 16 bottomed on the base material 23 or the like On the front side in direction G. The curved portion of the blade 6 has a radius of curvature of 1 to 30 mm.

FIG. 5 is a cross-sectional view showing an example where the blade 6 is an arcuate blade 6. The contact angle of the blade 6 between the tangential line of the peripheral surface at the contact position C or the surface extension line X of the sheet-like mold surface and the extension line 9 of the side portion 8 on the side opposite to the peripheral surface where the blade 6 contacts is θt. The tip of the blade 6 moves from the tangent line of the peripheral surface at the contact position C or the normal line Y to the surface extension line X of the sheet-like mold surface, including the vertical line Y, and the movement of the molding part 16 bottomed on the base material 23 Behind direction G. The curved portion of the blade 6 has a radius of curvature of 1 to 30 mm.

FIG. 6 is a cross-sectional view in which the blade 6 is an example of the square blade 6. The contact angle of the blade 6 between the tangential line of the peripheral surface at the contact position C or the surface extension line X of the sheet-like mold surface and the extension line 9 of the side portion 8 on the side opposite to the peripheral surface where the blade 6 contacts is θt. The tip of the blade 6 moves from the tangent to the peripheral surface at the contact position C or the perpendicular Y to the surface extension line X of the sheet-shaped mold surface, including the perpendicular Y, and the moving direction of the molded part 16 bottomed on the substrate 23 and the like Behind G.

FIG. 31A is an explanatory perspective view showing an example of an opening for blades of the surplus water heating composition supply device.
The three-dimensional space center point 80 is shown at the center of the blade opening 79 of the surplus water heating composition supply device 1.
FIG. 31B is a partially enlarged cross-sectional view showing an example of the vicinity of the blade of the surplus water heating composition supply device.
A blade opening 79 is provided in a part of the wall composed of the outer wall 4A and the inner wall 4 of the surplus water heating composition supply device 1, and the three-dimensional center point 80 of the opening 79 and the shape (periphery of the blade 6) are provided. A center point straight line 83 that is a straight line passing through the center point 82 of the contact position with the surface or sheet-shaped mold surface) 10 and a tangent line (surface) extending in the direction opposite to the traveling direction G of the mold 10 at the center point 82 An abutting angle of the blade, which is an angle formed by a center point tangent line (center point plane extension line) 84 that is an extension line, is indicated by θt.
FIG. 31C is a partially enlarged perspective view showing an example of the vicinity of the blade attachment portion of the surplus water heating composition supply device.
The contact position between the three-dimensional center point 80 of the blade attachment portion surface 81 where the blade 6 is attached to the inner wall 4 of the surplus water heating composition supply device 1 and the die (circumferential surface or sheet-like die surface) 10 of the blade 6. A center point straight line 83 that is a straight line passing through the center point 82 and a center point tangent (center point plane extension) that is a tangent (plane extension line) extending in the direction opposite to the traveling direction G of the mold 10 at the center point 82 The contact angle of the blade, which is an angle formed by the line 84, is indicated by θt.

   Here, FIG. 7 is a perspective view showing the relationship between the spring-type automatic movable blade 11 and the forming portion 16. The spring-type automatic movable blade 11 includes a pressing adjuster 12 that adjusts the pressing force of the spring 13, is in contact with the sheet-shaped inner surface 10 </ b> C of the sheet-shaped mold 21, and is externally fixed to the sheet-shaped mold outer surface 10 </ b> D side. A magnet 14 is provided. The width of the blade 6 covers all the through holes 17 of the molding part 16. The spring pressure can be changed by changing the spring 13 and / or changing the position at which the spring 13 is fixed by the pressing adjuster 12. If the spring 13 is replaced with a rubber tube, a rubber-type automatic movable blade is obtained.

FIG. 8 shows a cross-sectional view of another example of the surplus water exothermic composition supply device 1. A spring type automatic movable blade 11 is detachably fixed to the surplus water exothermic composition supplying device 1 by a blade fixing tool 7. The blade 6 corresponds to a fixed magnet 14 that is fixed so as not to move along with the rotation of the rotating body. 2 is a replenishment part, 3A is the inside of the opening part for blades, or the inside of a blade attachment part, 5 is a skirt, 13 is a spring. C is a contact position between the blade and the mold (circumferential surface) 10 of the rotating body or a contact position with the sheet-shaped mold surface 10C, and G is a rotation traveling direction and a moving direction.
Further, the horizontal cross-sectional area formed by the outer wall 4A of the replenishing part 2 of the surplus water exothermic composition supplying device 1 is equal to the horizontal cross-sectional area of the space part at the bottom of the smooth filling part 3 (the inner wall at the bottom of the smooth filling part 3). Smaller than the horizontal sectional area formed by 4B). Even in high-speed production, supply shortage of the excess water exothermic composition is prevented. In particular, it is useful for high-speed production.

  The seal type of the present invention is a cylindrical through-hole having an inner diameter of 29 mm and a height of 20 mm, which is made of iron powder, carbon component, reaction accelerator and water as essential components and is placed on “two types” filter paper of JIS-P3801. Excess water value 0.5 to 80, which is a value obtained by dividing the permeation distance of water or aqueous solution penetrating into the filter paper from the exothermic composition filled in the filter paper by the height (mm) of the cylindrical through hole. A heat-generating composition comprising the above-mentioned excess water is molded into a heat-generating composition molded body, corresponding to a mold having a mold hole, and sealing a peripheral portion of the heat-generating composition molded body sandwiched between a base material and a covering material 1) a seal mold having a portion and a space portion, corresponding to the mold hole of the mold, and between the opening shape line of the mold hole of the mold and the corresponding opening shape line of the space portion of the seal mold The margin value, which is a value obtained by dividing the margin distance, which is the distance of the above, by the height of the mold hole, is 0.1-60. And a seal mold having a space portion having a relationship in which a height value, which is a value obtained by dividing the height of the space portion of the seal mold by the height of the mold hole of the mold, is 1.1 to 150. 2) The margin distance corresponding to the mold hole of the mold and the distance between the opening shape line of the mold hole of the mold and the corresponding opening shape line of the space portion of the seal mold is The margin value, which is a value divided by the height of the mold hole, is 0.1 to 60, and is a value obtained by dividing the height of the space portion of the seal mold by the height of the mold hole of the mold. A rotary seal type having a space portion and a seal portion having a relationship of a height value of 1.1 to 150, wherein an R is formed adjacent to an end portion on the heat generating composition side of the seal surface of the seal type. And providing a pattern by forming the cross-sectional shape of the sealing surface into a concavo-convex shape. Digits is a seal type.

  As the seal mold (seal roll) of the present invention, a rod-shaped seal bar or a roll-shaped seal roll can be used for heat sealing, pressure-bonding seal, thermo-compression sealing, and the like. In addition, as the seal type as seen from the sealing method, a vertical seal type that seals along the advancing direction of the packaging material, a horizontal seal type that seals in a direction orthogonal to the advancing direction of the packaging material, a side seal type, and a two-way seal Examples include molds, three-way seal types, four-side seal types, envelope-attached seal types, joint-attached seal types (pillow seal types), pleated seal types, square bottom seal types, gusset types, tetrapack types, stand-bouch types, etc. It is done.

In the seal mold of the present invention, it is preferable to provide a round (substantially arcuate) adjacent to at least the end portion of the seal mold on the heat generating composition side. This round can surely eliminate the breakage of the packaging material at the end of the chemical warmer seal portion on the heat generating composition side. More preferably, the seal-type seal portion has a concavo-convex pattern, and rounds are provided at least at the convex corners of the concavo-convex portion. Thereby, the cutting of the packaging material can be surely eliminated in the entire seal portion.
Furthermore, it is preferable to provide rounded corners on the concave and convex portions so that pinholes do not occur in the packaging material due to the corners of the concave and convex portions. The Earl may be anything,
The radius of curvature is preferably in the range of 0.1 to 5.0 mm, more preferably 0.1 to 4.0 mm, still more preferably 0.1 to 3.0 mm, and further Preferably it is 0.1-2.0 mm,
More preferably, it is 0.1-1.0 mm, More preferably, it is 0.1-0.5 mm, More preferably, it is 0.1-0.3 mm, More preferably, it is 0.1-0. 2 mm.

The pattern of the sealing surface of the seal type is not particularly limited as long as the cross-sectional shape is uneven, (a) orthogonal grid, (b) parallel vertical lines, (c) parallel horizontal lines, (d The pattern can be arbitrarily selected, such as a staggered pattern, (e) an oblique grid pattern, (f) a broken diagonal pattern, (g) a diagonally stacked brick pattern, (h) a dotted pattern.
The cross-sectional shape of the sealing surface is preferably formed in a concavo-convex shape so as to reduce slippage when the chemical body is forwarded. This pattern does not necessarily need to be provided on all of the sealing surfaces, and is provided only on the exothermic composition side to leave the rest unpatterned. A pattern such as a pattern (orthogonal grid, oblique grid, etc.) may be used.

The distance (hereinafter referred to as pitch) between the concave and convex portions of the cross-sectional shape may be any length as long as it can be sealed, but is preferably 0.4 to 2.0 mm. If the thickness is less than 0.4 mm or more than 2.0 mm, unevenness that causes appropriate friction is not formed when the chemical warmer is sent in the production line.
In view of this point, the pitch is preferably 0.5 to 1.5 mm, more preferably 0.6 to 1.2 mm, still more preferably 0.6 to 1.0 mm.
Further, the height of the unevenness is not limited as long as it does not hinder the seal portion, but is preferably 0.05 mm to 1.0 mm, more preferably 0.1 mm to 0.6 mm. More preferably, it is 0.1 to 0.3 mm.

  The seal-type space portion is a non-sealed region, and there is no limitation as long as the heating element can be manufactured in a region where the packaging material is not sealed, but examples thereof include a through hole and a concave portion.

  The sealing area is an area where the packaging material is sealed.

  The seal type has a heating means inside and does not have a heating means. Seal rolls, which are a type of seal type, may or may not have heating means inside, and are used appropriately. An example is a pressure-bonding roll or a heat-sealing roll.

As the seal roll (seal device) of the present invention, a pressure-bonding seal roll, a heat seal roll, or a combination of them can be selected as appropriate.
The material of the skirt that covers the lower part of the surplus water heating composition supply device is not limited, but is elastic,
A thing with a softness | flexibility is preferable and rubber | gum, felt, etc. are mentioned as an example.
Moreover, a screw conveyor, a belt conveyor, etc. are mentioned as a conveyance means of the excess water exothermic composition to a surplus water exothermic composition supply apparatus as an example. A conveying means excluding feeding by pressurization is preferable.

It is preferable that at least a part of the seal-type space is covered with a separator such as a foam.
In order to protect the heat generating element (heat generating part) from the heat of the inner wall when the heat generating element (heat generating part) enters the seal type space part, at least one of the inside of the seal type space part so as not to touch the inner wall directly. It is preferable to provide a separator in the part.

  The isolation material of the present invention is not limited as long as it is for avoiding direct contact between the inner wall surface of the seal-type space portion and the packaging material such as a base material or a covering material. An example is a heat insulating material.

  The sealing device using the sealing mold of the present invention performs a sealing process. Although there will be no restriction | limiting if it is an apparatus using the seal type | mold of this invention, The apparatus using a seal roll is mentioned as an example. The sealing means may be composed of a pair of sealing rolls, but it may be a double sealing means of a first sealing means and a second sealing means, and a third and subsequent sealing means may be further added thereto. What is necessary is just to select suitably.

The heating element manufacturing apparatus of the present invention is a heating element manufacturing apparatus that uses a surplus water exothermic composition supply device, and corresponds to the surplus water heating composition supply device and the blade disposed therein, and rotates the rotating body. As long as it has a combination of a fixed magnet fixed to the opposite side of the blade with the rotating body sandwiched between them, there is no restriction, and the installation location of the surplus water heating composition supply device is also There is no limit.
1) A heating element manufacturing apparatus (1) provided with a hollow cylindrical rotating body having a through-hole on the peripheral surface, the surplus water heating composition supply apparatus installed in the lower part on the inner side,
2) A heating element manufacturing apparatus (2) provided with a chain conveyor-like rotator having a through-hole on the peripheral surface, wherein the surplus water heating composition supply apparatus is installed in the lower part inside.
3) A heating element manufacturing apparatus (3) provided with a hollow cylindrical rotating body having a through-hole on the peripheral surface, wherein the surplus water heating composition supplying apparatus is installed on the outer upper part,
4) A heating element manufacturing apparatus (4) provided with a hollow cylindrical rotating body having a concave portion on the outer peripheral surface, wherein the surplus water heating composition supply apparatus is installed on the outer top.
5) Between the exothermic composition molded body manufacturing apparatus (the rotary body) and the seal roll (sealing apparatus) using the surplus water exothermic composition supply apparatus, the coating material has irregularities corresponding to the exothermic composition molded body. A heating element manufacturing apparatus (5) provided with an unevenness imparting apparatus for imparting
6) An external temporary heating element manufacturing apparatus with an outer bag comprising a heating element manufacturing apparatus using the surplus water heating composition supplying apparatus and an external temporary setting apparatus (6)
Is given as an example.
Further, the through holes and the recesses can be provided in an arbitrary row and in an arbitrary number, and may have different shapes and intervals without being the same shape.

When using a base material and / or a covering material corresponding to the exothermic composition molded body forming part of the molding part, a base material and / or a covering material corresponding to the exothermic composition forming body forming part in advance is used. You may use, and at the time of heating-element manufacture, an uneven | corrugated provision apparatus may be provided in the process, and the base material and / or coating | covering material with the unevenness | corrugation which let it pass may be used. Corresponding to the exothermic composition molded body forming part is not limited as long as the exothermic composition molded body can be laminated or covered without breaking down, but the shape of the exothermic composition molded body forming part is slightly larger than the size. It is preferable to have When the exothermic composition molded body forming portion is provided in a stripe shape, it is preferable that irregularities (stripe irregularities) are formed on the base material and / or the covering material at least in the stripe direction. Also,
In order to prevent slippage and collapse of the exothermic composition molded body, the substrate may be provided with irregularities. In this case, there is no restriction on the size and shape.

The unevenness imparting device is not limited as long as the unevenness can be imparted to the covering material corresponding to the exothermic composition molded body forming portion of the molded part, and is available in commercially available unevenness imparting devices, Patent Document 4, Patent Document 5, Patent Document 6, and the like The disclosed unevenness imparting device can also be used.

Japanese Patent Publication No. 2003-144455, JP-A-10-506333, WO2006 / 006651 Publication

Although the heating element manufacturing apparatus of the present invention has a fixed magnet, it may have a mechanism for lowering or eliminating the magnetic force or shielding after laminating the exothermic composition molded body on the substrate. The magnet may be an electromagnet capable of changing the magnetic force, and can be easily achieved by providing a magnetic shielding means such as a magnetic shielding plate or a magnetic shielding plate inside or outside these devices to shield the magnetic force. The
Examples of the magnetic shielding means include a magnetic shielding plate made of nonmagnetic stainless steel.
As an example of the installation location of the shielding means, a magnetic shielding plate is provided at the traveling front position of the external endless belt adjacent to the external fixed magnet on the external fixed magnet installation side.
Thereby, the exothermic composition molded object laminated | stacked on the base material is not influenced by the magnetic force of a fixed magnet.

A heating element manufacturing apparatus using the surplus water heating composition supply apparatus will be described with reference to the drawings, but is not limited to the description in this figure.
1) Description of the heating element manufacturing apparatus (1). FIG. 9 shows an inner lower portion of a hollow cylindrical rotating body 19.
A cross-sectional view of an example of the heating element manufacturing apparatus 15 provided with the surplus water heating composition supply apparatus 1 (hereinafter referred to as a supply apparatus) in the vicinity including the lowest point B of the rotation is shown.
The hollow cylindrical rotating body 19 includes a molding portion 16 including a plurality of through-holes 17 provided on the peripheral surface with the peripheral wall 18 as an interval in the circumferential direction. The supply device 1 arranged at the lower inner side of the hollow cylindrical rotator 19 has a replenishing part, a smooth filling part, etc., and the smooth filling part includes the lowest point B of rotation of the hollow cylindrical rotator 19. The blade 6 is in contact with the inner peripheral surface 10B in the vicinity thereof. Further, the outer endless belt 28 is hollow so that the base material 23 supported by the outer endless belt 28 can come into contact with the peripheral surface 10A in the vicinity including the lowest point B of rotation of the hollow cylindrical rotating body 19. The cylindrical rotating body 19 is disposed on a support plate 29 at the lower outer side. If desired, a magnetic shielding plate 27 may be provided in front of the traveling direction G of the base material 23 of the external fixed magnet 26. The external fixed magnet 26 corresponds to the contact position of the blade 6 and is fixed on the opposite side of the support plate 29 from the blade 6 so as not to move in the rotation direction along with the rotation of the hollow cylindrical rotating body 19. . A seal roll 31 is provided in front of the traveling direction G of the base material 23 from a position where the blade 6 contacts the inner peripheral surface 10B. The covering material 22 and the base material 23 are separated and inserted into the seal roll 31. Although not shown, a cut roll is provided at the end. A cleaner 30 is provided near the highest point A of rotation of the hollow cylindrical rotating body 19.
The cleaner 30 is preferably provided in a region in the vicinity of the highest rotation point A from the lowest rotation point B in front of the rotation direction. The blade 6 is subjected to smooth filling once into the molding portion 16 in one step by the blade 6 and the external fixed magnet 26 at the contact position C with the peripheral surface, and subsequently, the exothermic composition molded body on the base material 23. Has a function of laminating.

2) Description of heating element manufacturing apparatus (2). FIG. 10 shows a cross-sectional view of another example of the heating element manufacturing apparatus 15 in which the supply device 1 is provided in the lower part inside the chain conveyor-like rotating body 20.
The chain conveyor-like rotating body 20 is provided with a plurality of sheet-like molds 21 connected to the chain.
The sheet-like mold 21 is driven by a chain supported inside the frame of the chain conveyor-like rotating body 20. The sheet-like mold 21 has a molding part 16 composed of a through hole 17 (see FIG. 7). The supply device 1 (see FIG. 8) arranged at the lower inner side of the chain conveyor-like rotator 20 has a replenishment section 2 and a smooth filling section 3, which is the lowest rotation of the chain conveyor-like rotator 20. A spring-type automatically movable blade 11 that contacts the sheet-like inner surface 10C in the vicinity including the point B). The base material 23 supplied from the base material supply roll and supported by the external endless belt 28 can come into contact with the outer surface 10D of the sheet-like mold 21 in the vicinity including the lowest point B of rotation of the chain conveyor-like rotating body 20. In addition, an external endless belt 28 is disposed on a support plate 29 at the lower outer side of the chain conveyor-like rotating body 20. If desired, a magnetic shielding plate 27 may be provided in front of the traveling direction G of the base material 23 of the external fixed magnet 26. The external fixed magnet 26 corresponds to the contact position of the spring-type automatic movable blade 11, on the opposite side of the support plate 29 from the spring-type automatic movable blade 11, in the rotational direction G along the rotation of the chain conveyor-like rotating body 20. It is fixed so that it does not move. The sheet-shaped mold 21 is detached from the base material 23 in the moving direction G of the sheet-shaped mold 21 from the supply device 1, and the exothermic composition molded body is laminated on the base material 23. A cleaner 30 is provided near the highest point A of rotation of the chain conveyor-like rotating body 20.
Moreover, you may provide the compressor (a compression roll, a compression endless belt, etc.) for compressing the moldable surplus water heating composition with which the through-hole 17 of the sheet-like mold | type 21 was rubbed and filled.
In addition, in order to prevent fluctuations in the sheet-like mold 21 such as deviation, a sheet-like mold 21 deviation preventing means may be provided.
At the position where the spring type automatic movable blade 11 abuts on the surface of the sheet-like mold 21, the spring type automatic movable blade 11 and the external fixed magnet 26 are used to perform one-time smooth filling to the molding part 16, followed by 23 has a function of laminating a heat generating composition molded body. The tangent at the blade contact position C is an extension of the surface of the sheet-like mold 21, and although not shown, the blade contact angle (θt) is set to 95 ° to 170 °. A seal roll 31 is provided in front of the advancing direction G of the base material 23 from the blade contact position C, and the coating material 22 supplied from the coating material supply roll and the base material 23 on which the exothermic composition molded body is laminated. Seal. Although not shown, a cut roll is provided at the end.

In each heating element manufacturing apparatus of the present invention, pressure seal, temporary heat seal, and external temporary wear,
Adhesive layer coating devices (adhesives, adhesives, etc.) for providing a pressure-sensitive adhesive layer, adhesive layer, etc. on a base material, outer bag packaging material, heating element body, etc., laminated with a covering material or a heat-generating composition molded body May be provided.
Adhesive layer coating devices include: an adhesive layer coating device (device for installing an adhesive layer), a temporary adhesion layer coating device (device for installing a temporary adhesive layer such as a weak adhesive), and an outer temporary adhesion layer coating device (weak adhesion). As an example, an apparatus for installing an external temporary adhesive layer such as an adhesive or a weak adhesive may be used.
The adhesive layer coating device includes a placement (lamination) position between a coating material supply roll and a sealing device (temporary attachment device, press device) and / or a heating composition molded body on a base material, and a sealing device (temporary attachment device, And can be selected and used as appropriate.
Although there is no restriction | limiting in the adhesive layer coating apparatus, it is preferable to have a spray nozzle that sprays an adhesive such as a hot-melt adhesive or cold glue in a spray form.
Further, an adhesive layer coating device may be provided on the front (downstream) side of the base material in the running direction from the sealing device.
The adhesive layer coating apparatus is provided between the sealing means and the coating material supply roll and / or between the sealing means and the position where the molded body of the exothermic composition is laminated on the base material, and the coating surface overlaps the exothermic composition molded body side. As described above, an injection nozzle for injecting an adhesive such as a hot-melt adhesive or cold glue in a spray form is provided on the overlapping surface of the traveling covering material.
If desired, the sheet-shaped mold is provided between the pressing means and / or the upstream means of the sealing means from a position away from the base material, and the exothermic composition molded body is laminated on the base material. You may have the spray nozzle which sprays an adhesive agent in spray form.

  The bottomed through-hole of the present invention is that the opening on the side opposite to the side on which the excess water exothermic composition is smoothly filled once is covered with a support such as a substrate or a belt. It is.

In each heating element manufacturing apparatus of the present invention, a cleaner is provided to remove excess excess water heating composition remaining on the inner wall of the molded part formed by the through-holes or recesses and the surface of the inner endless belt. It is preferable. In the case of the inner wall of the molding part, in any number between the placement (lamination) position of the exothermic composition molded body and the one-time smooth filling (scraping filling) position rotated once in the rotational direction, It is preferable to install a cleaner. In the case of an internal endless belt, it is preferable to install an arbitrary number of cleaners at arbitrary positions in a region where the internal endless belt is separated from the rotating body. Moreover, the heating element manufacturing method using this cleaner is preferable.

The cleaner is not particularly limited as long as it can clean at least the inner wall of the molded part formed of a through hole or a recess and the surface of the endless belt. The cleaner is designed to mechanically sweep off the exothermic composition adhering to the surface of the rotating body, through-holes, and recesses. As an example. As an example of using the cleaner, for example, the surface of the rotating body and the inner wall of the through hole are rubbed with a rotating brush, a fixed brush, etc., the deposits are removed, and the cargo is collected in a receiving container. Alternatively, the deposits are blown off by air blowing such as air and collected in a receiving container. These may be combined. If the brushes and the blower are combined, at least the recesses, the inner walls of the through holes and the surface of the endless belt can be cleaned, and further, the adhered matter adhered by the blower can be blown away and cleaned. The removed deposit is collected in a receiving container. Deposits collected in the receiving container
Sequentially, it may be discharged to the outside by decompression, a belt conveyor or the like, or may be discharged collectively from the receiving container after the work is completed. There are no particular restrictions on the number and positions of cleaning tools such as rotating brushes and fixed brushes and blowers, as long as they can be cleaned.

The surplus water exothermic composition supply device, the hollow cylindrical rotator, the chain conveyor-like rotator, the blade and the sheet-like mold are not limited, but synthetic resins such as polypropylene, polyamide, PEEK, It is preferable to use a metal such as stainless steel, aluminum, brass, or an alloy thereof. In the case of metal, the material is determined taking into account the mechanical structure of the rotating body or how the surface treatment is performed on the peripheral surface from among these materials. The circumference of the rotating body is
Depending on the material, puffing, hard chrome plating, nickel plating, Teflon (registered trademark) impregnation, formation of a Teflon (registered trademark) film, or a combination of these is appropriately performed. In particular, nonmagnetic materials such as stainless steel and aluminum are preferred.

  A screw conveyor, a belt conveyor, etc. are mentioned as an example of the conveyance means of the excess water exothermic composition to the said excess water exothermic composition supply apparatus. A conveying means excluding feeding by pressurization can be used.

The shape of the heating part of the single heating part heating element of the present invention is preferably formed by the shape of the molding part. One through hole or concave portion, which is a molding portion, forms one heat generating portion.
The outer shape of the heat generating element according to the present invention is preferably formed in a cut shape.
There is no restriction | limiting in the planar shape of the through-hole or recessed part of the shaping | molding part for single heat generating parts, and the planar shape of the outer shape of a heat generating body. The corners of the shape may be provided in a round shape (substantially arc shape), and the corners may be curved or curved.

The through-hole or recess of the present invention is not limited as long as it can form the excess water exothermic composition and the exothermic composition molded body can be laminated on the substrate, and is filled with the excess water exothermic composition (exothermic composition). Increase the size of the opening on the side where the heat-generating composition molded body is laminated on the base material, etc. from the side, or round the corners of the ends (substantially arc-shaped)
May be provided.

The through-hole or recess of the present invention constitutes a molded part, and the excess water exothermic composition is molded into a exothermic composition molded body. The heating element includes a single heating part heating element composed of one heating part and a segment heating part heating element composed of a heating part in which a plurality of segment heating parts are spaced apart by a partitioning part.
The through holes or recesses for the divided heat generating portion heating element of the present invention are provided with a plurality of through holes or recessed portions at intervals, and each through hole or recessed portion is provided with a heat generating composition molded body for the divided heat generating portion. The exothermic composition molded body for the heat generating part is formed by the collected plural exothermic composition molded bodies. The shape of the through hole or the concave portion and the shape of the segment heat generating portion or the shape of the heat generating portion are not necessarily the same.

The shape and size of the through-holes or recesses of the single heat-generating part molding part, the shape and size of the through-holes or recesses of the segmented heat-generating part molding part, and the interval between the through-holes or recesses forming the adjacent segment heating parts There is no limitation, and the shape and size of a single heat generating portion, a divided heat generating portion, and a divided portion described later are applied.
In the case where the exothermic composition molded body is "provided at intervals in a stripe form",
The through holes or the recesses may be provided in stripes at intervals in accordance with the divided heat generating portions.

The pressure-bonding roll of the present invention is not limited as long as it is a seal roll having a press function, but a clearance management roll or a balloon roll is an example. The clearance management roll is not particularly limited as long as it has a press function by clearance, and examples thereof include a flat roll, an embossing roll, a metal roll, and a rubber roll. The pressure-bonding seal roll may be heated to a predetermined temperature. The pressure-bonding seal roll may be two or three or more.
Further, the pressure roll is in direct contact with the excess water exothermic composition (exothermic composition) while the excess water exothermic composition (exothermic composition) is filled in the mold in addition to the pressure seal. It can also be used when performing compression processing. At this time, the material of the pressure-bonding roll is preferably a rubber that is hardly attached to silicon resin or fluororesin and can be deformed.

  The leveling roll is a roll that flattens a heat-generating composition such as a heat-generating composition molded body in a heat-generating portion and flattens the entire heat-generating body. There is no limitation as long as the entire heating element can be flattened, but examples include flat rolls, embossing rolls, metal rolls, rubber rolls, and balloon balloons that have elasticity using air, such as rubber balloons, made of plastic, metal, rubber, etc. As mentioned.

The cutting device of the present invention is arranged on the lower side of the sealing device, cuts the base material and the covering material that are stacked so as to sandwich the exothermic composition molded body by a cut roll and sealed at the peripheral portion thereof, It is designed to cut one by one. The cutting roll (cutting device) is not limited as long as the heating element can be cut, but includes a cutting roll having a cutting blade with a shape for cutting the heating element and an anvil roll that receives the cutting roll, and transports both sheets. An example is one that is rotated in synchronism with. A press belt may be provided between the seal roll and the cut roll.

In addition, the substrate supply device, the coating material supply device, the temporary wear and / or the external temporary wear adhesive application device, the seal device, the cutting device, the heating element transport device, the packing device, and the like have been disclosed from existing devices. Devices that are available or commercially available or are used for known disposable warmers or heating elements can also be selected and used as appropriate.

The heating element of the present invention uses at least one selected from the heating element manufacturing method, the seal mold, the excess water heating composition supplying device, and the heating element manufacturing device, iron powder, carbon component, reaction Water that permeates the filter paper from an exothermic composition filled in a cylindrical through-hole having an inner diameter of 29 mm × height of 20 mm, which is placed on the “two types” filter paper of JIS-P3801 and contains an accelerator and water as essential components Or the exothermic composition molding which shape | molded the surplus water exothermic composition of the surplus water value 0.5-80 which is the value which represented the value which remove | divided the penetration distance of aqueous solution by the height (mm) of a cylindrical through-hole in percentage It is a heating element using the body.
In addition, the iron powder, the carbon component, the reaction accelerator, and water as essential components, and a plurality of compartmental heat generations containing a heat generating composition molded body formed of a surplus water value exothermic composition having a surplus water value of 0.5 to 80. The part is provided with an interval, with the section being an interval, at least a part of the heating element having air permeability,
At least one loop stiffness in the longitudinal direction crossing the divided heat generating portion region and the divided portion of the storage body, which is a component of the heat generating member excluding the heat generating composition molded body, is 700 mN / cm or less, and the structural flexible function and the joint It is a heat generating body which has the softness | flexibility based on a static flexible function.
Moreover, it consists of a single heating part heating element and a segment heating part heating element.
The entire heating element of the present invention may be air permeable or partially air permeable. The exothermic composition compact also includes a exothermic composition compact that is a compressed exothermic composition compact. It is preferable to provide a fixing means on at least a part of the exposed portion of the heating element.

A breathable pressure-sensitive adhesive layer may be provided between the coating material and the base material and / or the exothermic composition molded body.

The shape of the exothermic composition molded body, single heating section, section heating section, heating section, heating element may be any, but in a planar shape, a circle, an ellipse, a football shape, a triangle, a square, a rectangle, a hexagon, Examples include polygons, stars, flowers, and rings. In three-dimensional shape, disk shape, pyramid shape, spherical shape, cube shape, polygonal pyramid shape, cone shape, frustum shape, spherical shape, parallelepiped shape, cylindrical shape, rectangular parallelepiped shape, polyhedron shape, ellipsoid shape, Examples include a semi-cylindrical shape, a semi-elliptical cylinder shape, a bowl shape, a cylindrical shape, and an elliptic cylinder shape.
In addition, these shapes may be provided with corners in a round shape (substantially arc shape), the corners may be curved or curved, or a recess may be provided at the center or the like.

In the present invention, a region corresponding to a corner (an end corner) such as a heat generating composition molded body, a single heat generating portion, a section heat generating portion, a heat generating portion, a heat generating body, a seal portion, a through hole, a concave portion, or a convex portion is rounded. You may provide in a shape (substantially circular arc shape).
The shape of the round shape (substantially arc shape) is not limited, but the radius of curvature is preferably 0.1 to 20.0 mm, more preferably 0.1 to 10.0 mm, and still more preferably 0.00. It is 1-5.0 mm, More preferably, it is 0.3-5.0 mm, More preferably, it is 0.3-3.0 mm, More preferably, it is 0.5-2.0 mm.

  In the single heat generating part structure and the divided heat generating part structure, the single heat generating part and the divided heat generating part are formed in a unified structure having at least two facing surfaces, preferably a film layer base material surface. One surface is permeable to oxygen (air), and when the exothermic composition molded body is accommodated, the exothermic composition molded body volume, the space volume, and the divided exothermic part volume have the following relationship. The exothermic composition molded body volume is the volume of the exothermic composition molded body itself, the spatial volume is the volume not occupied by the exothermic composition molded body in the section heating section, and the section heating section volume is the volume of the section heating section. The volume is the sum of the space volume and the exothermic composition molded body volume.

The single heating part heating element of the present invention is a heating element in which the heating part is formed of one heating part, and at least a part of the heating element has air permeability. The shape of the heat generating part and the heat generating element is not limited, and the shape of the heat generating element and the shape of the heat generating part are not necessarily the same. Further, the heating element and / or the heating part may be provided with corners in a round shape (substantially arc shape), and the corners may be curved or curved. Examples of the heating element include a rectangular heating element, a warm pad heating element, and a foot temperature heating element.

The rectangular heating element of the present invention is a heating element having a rectangular heating element and heating element. Rectangular and square shapes are examples.

The hot-spring heating element of the present invention has various shapes such as a circle, a rectangle and an ellipse, and the size is 50 mm in length.
Below is a small heating element with a width of 50 mm or less. Suitable for heating the body's vases.

The foot temperature heating element of the present invention may be a heating element formed in a shape that covers any part of the foot,
For example, a shape that covers a part of the back side of the foot, a shape that covers the entire back side of the foot, a shape that covers a part of the back side of the foot, a shape that covers the entire side of the back of the foot, A shape that covers a part or all and part or all of the side of the foot, or part or all of the back side of the foot, part or all of the side of the foot, part of the back side of the foot or For example, a heating element having a shape covering the whole can be cited. Moreover, a recessed part etc. may exist in the center part etc. of a heat generating body.

The segment heating part heating element of the present invention is a segment heating part and a seal region having a surplus water heating composition containing excess water of 0.5 to 80 or a heating composition molded body that is a molded body thereof, There are two or more, preferably three or more, more preferably four or more, and still more preferably five or more, divided heat generating parts provided with a certain separation part, with a separation part as an interval. And at least one loop stiffness in the longitudinal direction crossing the section heating section region and the section of the storage body of the heating element is 700 mN / cm or less, and has a structural flexible function and an articulated flexible function. A heating element having a flexible function composed of two functions. At least a part of the heating element has air permeability. There are no restrictions on the shape of the section heating section, heating section, and heating element.
The heating element and / or the section heating part may be provided with corners in a round shape (substantially arc shape) and the corners may be curved or curved.
Further, in the segmented heat generating portion heating element of the present invention after the end of heat generation, it is preferable that the loop stiffness of at least one of the segmented portions is 700 mN / cm or less.
The heating element according to the present invention has a flexible function composed of two functions of a structural flexible function and an articulated flexible function supported by various physical properties, and is thin, before heat generation, during heat generation, and end of heat generation. It is a heating element that is soft and soft to the touch after use, that is, before use, during use, and after use.
In addition, when the heating element is adhered to the skin side of clothing that comes into contact with the skin with a heating element having a fixing means, in particular, a section heating part heating element having a fixing means, the adhesive layer is particularly fixed to the breathable surface side. In the case of the heating element described above, the body can be directly heated without causing any harmful effects on the skin, and the direct heating element cannot be obtained. In the case of a double-sided breathable heating element, in the case of a heating element having an adhesive layer as a fixing means on the non-breathable surface side, steam generated from the heating element can be supplied to the skin.
The divided heat generating part heating element of the present invention forms a divided heat generating part heating element group including its deformation. Rigid soft heating element, stripe heating element, detachable heating element, telescopic heating element, band heating element, tunnel ventilation heating element, drug heating element, detachable tunnel ventilation heating element, detachable drug heating element, outer temporary attachment with outer bag A folding heating element is an example. Examples of the heating element with intermittent incisions include a detachable heating element, a telescopic heating element, a detachable tunnel ventilation heating element, and a detachable medicine heating element.

It is preferable that the segment heating part heating element of the present invention further has at least one of the following items.
1) A heating element having a maximum tensile strength at 25 ° C. of 20 g / mm width or more and an elongation at break of 5% or more at 25 ° C. is an example.
2) The loop stiffness of at least one section is 700 mN / cm or less.
3) Further, at least a part of each divided heat generating portion is covered with a local ventilation material, and has a space portion surrounded by the ventilation side of the divided heat generation portion, the partitioning portion, and the local ventilation material, and at least a space portion of the divided heat generation portion. The exothermic composition is ventilated from the side vent portion facing the surface.
4) Intermittent cuts are provided in at least a partial region of the section.
5) The minimum bending resistance is 70 mm or less, and the minimum bending resistance change is −95 to 0.
6) The minimum bending resistance is 70 mm or less, and the minimum bending resistance difference is 0 mm or less.
Particularly, when the loop stiffness of the storage unit for the heating element according to the present invention is 300 mN / cm or less, preferably 0.01 to 250 mN / cm, more preferably 0.01 to 200 mN / cm, The section of the heating element has excellent flexibility to bend more easily. Further, when the loop stiffness of at least one section is 300 mN / cm or less, preferably 0.01 to 250 mN / cm, more preferably 0.01 to 200 mN / cm, the section of the section heating section heating element is In addition, it has excellent flexibility to bend more easily.

The section heating unit or the single heating unit may have any shape, but may be a planar shape such as a circle, an ellipse, a football shape, a triangle, a square, a rectangle, a hexagon, a polygon, a star shape, a flower shape, or a ring shape. As an example. In addition, these through holes may have rounded corners, and the corners may be curved or curved.

In the size of the single heat generating part, there is no limitation on the size in the disk shape, circular shape, elliptical shape, and similar shapes,
The height is preferably 0.1 to 20 mm, more preferably 0.3 to 20 mm, more preferably 0.5 to 20 mm, more preferably 0.5 to 10 mm, and still more preferably. Is 0.5-8 mm.
The diameter or maximum diameter is preferably 3 to 200 mm, more preferably 5 to 200 mm.
More preferably, it is 5-180 mm, More preferably, it is 5-150 mm, More preferably, it is 5-100 mm, More preferably, it is 5-50 mm.
In shapes other than disk-like, circular, elliptical, and similar shapes (rectangular, rectangular-like shapes, etc.), the size is not limited, but the length is preferably 3 to 500 mm, more preferably 3 to 3 mm. It is 400 mm, More preferably, it is 3-300 mm, More preferably, it is 3-200 mm, More preferably, it is 5-200 mm, More preferably, it is 5-180 mm, More preferably, it is 5-150 mm.
The height is preferably 0.1 to 20 mm, more preferably 0.3 to 20 mm, still more preferably 0.5 to 20 mm, and further preferably 0.5 to 8 mm.
The width is preferably 3 to 200 mm, more preferably 5 to 200 mm, still more preferably 5 to 180 mm, still more preferably 5 to 150 mm, and still more preferably 5 to 100 mm.

Although there is no restriction | limiting in the size of a division | segmentation exothermic part, Preferably it is the following size.
1) In the case of disk shape and disk-like shape The diameter or maximum diameter is preferably 1 to 60 mm, more preferably 2 to 50 mm, still more preferably 10 to 40 mm, and further preferably 20 to 30 mm. .
The height is preferably 0.1 to 20 mm, more preferably 0.3 to 20 mm, still more preferably 0.5 to 20 mm, still more preferably 0.5 to 10 mm, and still more preferably. It is 0.5-9 mm, More preferably, it is 0.5-8 mm, More preferably, it is 0.5-7 mm, More preferably, it is 1-7 mm.
The volume is preferably about 0.0045-20 cm ³ , more preferably 0.2-11.
cm ³ .
2) When the shape is other than the above 1) (rectangle, rectangular-like shape, etc.) The width is preferably 0.5 to 60 mm, more preferably 0.5 to 50 mm,
More preferably, it is 1-50 mm, More preferably, it is 3-50 mm, More preferably, it is 3-30 mm, More preferably, it is 5-20 mm, More preferably, it is 5-15 m
m, more preferably 5 to 10 mm.
The height is preferably 0.1 to 30 mm, more preferably 0.1 to 20 mm.
More preferably, it is 0.1-10 mm, More preferably, it is 0.3-10 mm, More preferably, it is 0.5-10 mm, More preferably, it is 0.5-7 mm, More preferably 1-7 mm.
Further, the length is preferably 5 to 300 mm, more preferably 5 to 200 mm, still more preferably 5 to 100 mm, still more preferably 20 to 150 mm, and still more preferably 30 to 100 mm.

  The width of the section is not limited, but is preferably 0.1 to 50 mm, more preferably 0.2 to 50 mm, still more preferably 0.3 to 50 mm, and still more preferably 0.3. -40 mm, more preferably 0.4-40 mm, still more preferably 0.5-40 mm, still more preferably 0.5-30 mm, still more preferably 1-20 mm, more preferably It is 2-20 mm, More preferably, it is 3-20 mm, More preferably, it is 3-10 mm.

It is preferable that the divided heating element heating element of the present invention after the heat generation of the present invention further has at least one of the following items.
1) The maximum tensile strength at 25 ° C. of at least one section is preferably 20 g / mm width or more, and the elongation at break at 25 ° C. is preferably 5% or more.
2) In at least one kind selected from the loop stiffness of the section, the maximum tensile strength at 25 ° C. and the elongation at break of the section, each region has a physical property of 0.3 to 1.7 times the average value of the corresponding physical properties. Preferably it has a value.

In the divided heating part heating element of the present invention,
1) The loop stiffness of the storage body was set to 700 mN / cm or less, the flexibility of the storage body was ensured, and the moderate flexibility of the section heating part heating element was ensured.
2) The maximum tensile strength at 25 ° C. of at least one section is 20 g / mm width or more, and the elongation at break at 25 ° C. is 5% or more, preferably the maximum tensile strength at 25 ° C. of each section Is 30 g / mm width or more, the elongation at break at 25 ° C. is 10% or more, and the toughness for maintaining the structure of the heating element of the segmented heating section and the extensibility for maintaining flexibility are ensured.
3) The loop stiffness of at least one section was set to 700 mN / cm or less to ensure the flexibility of the joint of the heating element.
4) The minimum bending resistance of the segment heating element heating element is 70 mm or less, the difference in minimum bending resistance is 0 or less, and / or the change in minimum bending resistance is -95 to 0, before use, during use, during use A heating element having no change in flexibility was secured after completion.
5) The loop stiffness of the storage body after the end of heat generation is set to 700 mN / cm or less to ensure the flexibility of the storage body. Ensured flexibility.
6) Cover at least a part of each section heat generating part with a local ventilation material, adjust the ventilation to the heat generating composition and keep the temperature in place, or make intermittent cuts in a part of the part of the section part. The heat generating body group of the divided heat generating part with a wide base was formed.

The loop stiffness of the storage body according to the present invention generates heat in a direction that passes through the section heating section region and the section of the storage body in which the section heating section area that is a non-sealing area and the section section that is a sealing area coexist substantially orthogonally. The loop stiffness of at least one sample of the plurality of samples of the storage body cut out in the longitudinal direction of the region including the seal portion at the periphery of the body may be 700 mN / cm or less.
The loop stiffness of the segmented portion of the present invention may be such that when there are a plurality of segmented portions, the loop stiffness of at least one sample of the plurality of segmented portions is 700 mN / cm or less.
As the loop stiffness of the container of the present invention and the loop stiffness of the section according to the present invention, values measured at room temperature, preferably at 25 ° C. are adopted.
The maximum tensile strength of the section at 25 ° C. of the present invention may be such that when there are a plurality of sections, the maximum tensile strength of at least one sample of the plurality of sections is 20 g / mm width or more.
The breaking elongation at 25 ° C. of the present invention may be such that, when there are a plurality of dividing portions, the breaking elongation of at least one of the plurality of dividing portions is 5% or more.

  The “classified heat generating portion” of the present invention is a non-sealed region in the heat generating element where the packaging material is not sealed, and is a region that accommodates the heat generating composition molded body.

  The “dividing part” of the present invention is a non-contained area of the exothermic composition molded body in the central part other than the peripheral part of the heating element, and is a sealing area where the packaging material is sealed. It is a connection part which exists between a part and a division | segmentation heat_generation | fever part, and enables the division | segmentation heat_generation | fever part to exist with a space | interval, and is a hinge (bending area | region). As long as the section is a seal region, there is no limitation, and examples include a heat seal region, an adhesive (pressure-sensitive) seal region, and an adhesive seal region. A heat seal region (heat seal portion) is particularly preferable.

In the heating element of the present invention, the bending is mainly performed at the section, but the bending may be performed in other regions.
In addition, the outer shape of the heating element of the present invention is not limited, but it is rectangular, square, broad, eye mask, bowl, bowl, rounded rectangle, rounded square, egg, boomerang, and magama ball. Examples include shape, star shape, wing shape, nose shape, lantern shape, and foot shape. The airfoil is suitable around the neck and shoulders.
The angle of the outer shape of the heating element may be formed in a round shape (substantially arc shape).

The “plurality of divided heat generating portions” of the present invention means two or more, preferably three or more, more preferably four or more divided heat generating portions. The same applies to the divided heat generating area.
The “plurality of sections” in the present invention means two or more, preferably three or more, more preferably four or more sections.

  The divided heat generating portion of the heating element of the present invention has a convex shape at least on one side with a divided portion which is a seal region as a boundary, and is composed of a top portion and a side portion.

The flexibility of the storage body of the exothermic composition molded body depends on the type and thickness of the sealing layer made of a raw material film or a heat sealing material made of a polyethylene film or a porous film constituting the base material or the covering material. It is very different and greatly affects the flexibility of the heating element.
Only the structure in which the heating element is a combination of a segment heating part containing a heating composition molded body and a section part not containing a heating composition molded body, or the weight of the heating composition molded body of the segment heating part is increased, If the bending resistance of the heating element is not more than a specific value, a heating element with good touch, excellent flexibility and good wearability cannot be obtained.
In the present invention, by limiting the loop stiffness of the storage body to 700 mN / cm or less, the flexibility of the storage body itself is ensured accurately, and the human body can be obtained without increasing the weight of the exothermic composition molded body of the section heat generating portion. The section corresponding to the joint is soft and the heating element is excellent in flexibility. Furthermore, by limiting the loop stiffness of the segmented portion to 700 mN / cm or less, it is possible to impart good waist strength (hardness) to the segmented portion and to obtain a good hinge function.
In addition, since the maximum tensile strength at 25 ° C. of the at least one section of the present invention is 20 g / mm width or more and the elongation at break at 25 ° C. is 5% or more, the section that is a sealed connection section is provided. Maintaining the shape as the sectioning section, supporting the section heat generating section reliably while maintaining the space between the section heat generating sections, function as a hinge, and bend preferentially over the section heat generating section containing the heat generating composition molded body.
Incorporating these factors, the minimum bending resistance of the heating element is 70 mm or less, the difference in minimum bending resistance is 0 or less and / or the change in minimum bending resistance is -95 to 0, so that the unevenness is gentle. There is no sense of incongruity, the section corresponding to the joint is soft and flexible, the flexibility of the heating element before and after the heat generation does not change, and the flexibility does not change before, during and after use. Or, a heating element with increased flexibility could be secured. Since the flexibility does not change or increases, it is difficult for the body or object to peel off from the application part, adhesiveness (adhesiveness) is not easily lost, and it has excellent wearability and adhesion. Part heating element. It is preferable that the loop stiffness of the storage body after the end of heat generation and the loop stiffness of at least one section of the storage body are 700 mN / cm or less.

  The structural flexible function is a function that imparts flexibility resulting from a structure in which the heating element has a region that is difficult to bend and a region that is easily bent. That is, it is a function of holding the entire heating element flexibly. Specifically, the heat generating element is configured such that a region that is difficult to bend is configured by a segmented heat generating unit having a heat generating composition molded body, and a region that is easily bent is configured by a segmented part that is a sealed region without the heat generating composition molded body. It is. By defining the loop stiffness of the housing constituting the heating element to a predetermined value, the flexibility and feel of the entire heating element are realized.

  The articulating flexible function is a function that gives flexibility to a section corresponding to the joint of the heating element, and the section can be bent smoothly. In other words, it is a hinge function that operates with a weak force. By reducing the loop stiffness of the storage body or the like, the section of the section heating section heating element can be bent, and practical flexibility can be ensured.

  By combining the structural flexible function and the articulating flexible function, the function that the section can be smoothly bent before, during, and after the heat generation is secured.

  At least one section of the storage body including a section heating section area for storing the exothermic composition molded body, a non-storage area, a sealing area, a connecting section, and a section (hind area) which is a hinge (bending area). The loop stiffness is set to 700 mN / cm or less, and the maximum tensile strength at 25 ° C. of at least one section is 20 g / mm width or more, and the elongation at break at 25 ° C. is 5% or more. It is flexible and soft, and has a hinge function that shows good feel.

  The loop stiffness of the storage body after the end of heat generation and the loop stiffness of at least one section of the storage body are set to 700 mN / cm or less, the loop stiffness of the storage body before and after the end of heat generation, and at least one of the storage body. By making the loop stiffness of the two sections almost equal or not changing, it is possible to secure the function that the section can be bent more smoothly before heating, during heating, and after the end of heating, and heat generation with more flexibility. The body can be secured.

  In addition to incorporating these elements, the heating element of the present invention has a minimum bending resistance of 70 mm or less, a minimum bending resistance change of −95 to 0 and / or a minimum bending resistance difference of 0 or less. Due to this, the unevenness is gentle and there is no sense of incongruity, the section that hits the joint is soft and flexible, the flexibility of the heating element before and after heat generation does not change, before use, during use, after use In addition, a heating element that does not change flexibility or increases flexibility can be secured. Therefore, since flexibility does not change or increases, along the shape of the heated body such as the body or object, it is easy to follow the shape of the heated body, it is difficult to peel off from the affixed part, it is excellent in wearability and adhesion In addition, a separate heating element can be provided.

The loop stiffness of the storage body of the present invention is an index indicating the flexibility of the heating element, and is an index expressed numerically by taking into account both the flexibility and low resilience of the storage body.
Thereby, the flexibility of the heating element, in particular, the flexibility of the divided heating part heating element composed of a plurality of divided heating parts and the dividing part and the similar heating element can be accurately expressed numerically.
In addition, when the heating element is placed along a body to be heated, the heating element can be easily placed along the heating body regardless of the weight of the heat-generating composition molded body of the heating element. This is an index for realizing a low-repulsive heating element that does not return to its original state by a repulsive force.
If the loop stiffness of the storage body is increased, the repulsive force is increased, the flexibility of the storage body is lost, the heating element is stiffened, the flexibility is lost, and the touch is not good.
The loop stiffness of the storage body can define both flexibility and resilience, but the minimum bending resistance cannot define resilience due to bending even if it can define flexibility.
Originally, when the flexibility of a heating element is defined, the flexibility can be defined only when both flexibility and resilience can be defined.
The heating element having the storage body defined by the loop stiffness of the present invention has the flexibility of the heating element, in particular, the flexibility of the divided heating part heating element composed of a plurality of divided heating parts and the dividing part and the similar heating element. It is possible to provide and provide a heating element having flexibility and good touch, which can be expressed as a numerical value accurately, considering as flexibility and low resilience.
Although there is no restriction | limiting in the adjustment method of the loop stiffness of the storage body of this invention, It is preferable to adjust with sealing layers, such as a packaging material and a heat sheet layer, an adhesive layer, and the width | variety and number of division parts.

The loop stiffness of the section of the present invention is an index expressed numerically, taking into account both the flexibility and low resilience of the section, which is the bent region that is the hinge of the section heating element heating element.
When the loop stiffness of the section is increased, the repulsive force is increased, the flexibility of the section is lost, the heating element is stiffened, the flexibility is lost, and the touch is not good.
The loop stiffness of the section is independent from the loop stiffness of the storage body, but when combined, the section heat generator group (the section heat generator and its similar heat generation is flexible and comfortable to touch. To say the body).

   In the section, by limiting the loop stiffness of at least one section to 700 mN / cm or less, it is possible to impart good waist strength (hardness) to the section, and a good hinge function is obtained, The flexibility of the joint of the heating element can be ensured.

  The loop stiffness of the storage body after the end of heat generation according to the present invention is used when the obtained segment heating part heating element is heated in a normal atmosphere and the temperature of the segment heating part heating element falls below 37 ° C. Assuming the end, the end of the heat generating section of the heating element after the end of heat generation is opened, the exothermic composition molded body (equivalent to the exothermic composition molded body) is taken out, and the remaining non-sealed portion of the container that is the packaging material The section of the storage body cut in the longitudinal direction of the region including the seal part at the periphery of the segment heat generating part heating element in the direction passing through the section heating part region being the seal part and the partitioning part being the seal part substantially orthogonally. Loop stiffness. This is an index of the flexibility of the storage body after the end of heat generation.

The storage body uses a base material and a covering material composed of a packaging material having a substantially flat surface, and has a structure including a region for storing a heat-generating composition molded body and a hinge (bending region). In addition, at least a part of one surface of the storage body has air permeability.
A packaging material having a layer or region composed of an adhesive, an adhesive, a heat seal material, etc. is treated as a single packaging material, and a packaging material such as a texture material, a laying material, a cushioning material, etc. When not fixed, the packaging material is removed, and mechanical properties such as loop stiffness are measured.

  The loop stiffness of the container before heat generation according to the present invention is 700 mN / cm or less, preferably 600 mN / cm or less, more preferably 0.01 to 600 mN / cm, and still more preferably 0.01 to 500 mN. / Cm, more preferably 0.01 to 400 mN / cm, still more preferably 0.01 to 300 mN / cm, still more preferably 0.1 to 300 mN / cm, and still more preferably 0.1. To 250 mN / cm, more preferably 0.1 to 200 mN / cm, more preferably 0.5 to 200 mN / cm, still more preferably 1 to 200 mN / cm, and still more preferably 5 to 200 mN. / Cm, more preferably 10 to 200 mN / cm. When it exceeds 700 mN / cm, the waist of a storage body will become strong and each softness | flexibility of a division | segmentation heat_generation | fever part heat heating element group will not be obtained.

  The loop stiffness of at least one section before heat generation according to the present invention is 700 mN / cm or less, preferably 600 mN / cm or less, more preferably 0.01 to 600 mN / cm, and still more preferably 0.8. It is 01-500 mN / cm, More preferably, it is 0.01-400 mN / cm, More preferably, it is 0.01-300 mN / cm, More preferably, it is 0.1-300 mN / cm, More preferably It is 0.1-250 mN / cm, More preferably, it is 0.1-200 mN / cm, More preferably, it is 0.5-200 mN / cm, More preferably, it is 1-200 mN / cm, More preferably It is 5-200 mN / cm, More preferably, it is 10-200 mN / cm. When it exceeds 700 mN / cm, the waist of a storage body will become strong and each softness | flexibility of a division | segmentation heat_generation | fever part heat heating element group will not be obtained.

  The loop stiffness of the container after the heat generation is 700 mN / cm or less, preferably 600 mN / cm or less, more preferably 0.01 to 600 mN / cm, and still more preferably 0.01 to 500 mN / cm. cm, more preferably 0.01 to 400 mN / cm, still more preferably 0.01 to 300 mN / cm, still more preferably 0.1 to 300 mN / cm, still more preferably 0.1 to 300 mN / cm. 250 mN / cm, more preferably 0.1 to 200 mN / cm, more preferably 0.5 to 200 mN / cm, still more preferably 1 to 200 mN / cm, still more preferably 5 to 200 mN / cm. cm, more preferably 10 to 200 mN / cm. When it exceeds 700 mN / cm, the waist of a storage body will become strong and each softness | flexibility of a division | segmentation heat_generation | fever part heat heating element group will not be obtained.

  The loop stiffness of at least one section after the end of heat generation is 700 mN / cm or less, preferably 600 mN / cm or less, more preferably 0.01 to 600 mN / cm, and still more preferably 0.01. To 500 mN / cm, more preferably 0.01 to 400 mN / cm, still more preferably 0.01 to 300 mN / cm, still more preferably 0.1 to 300 mN / cm, and still more preferably 0. 0.1 to 250 mN / cm, more preferably 0.1 to 200 mN / cm, more preferably 0.5 to 200 mN / cm, still more preferably 1 to 200 mN / cm, and still more preferably 5 It is -200mN / cm, More preferably, it is 10-200mN / cm. When it exceeds 700 mN / cm, the waist of a storage body will become strong and each softness | flexibility of a division | segmentation heat_generation | fever part heat heating element group will not be obtained.

  The difference between the loop stiffness of the container before the heat generation and the end of the heat generation, and the difference of the loop stiffness of the section before the heat generation and the end of the heat generation are preferably ± 500 mN / cm, more preferably ± 300 mN / cm. More preferably ± 100 mN / cm, further preferably ± 80 mN / cm, further preferably ± 50 mN / cm, further preferably ± 20 mN / cm, and further preferably ± 10 mN / cm. More preferably, it is ± 5 mN / cm, and more preferably 0 mN / cm.

  In the container, the maximum tensile strength at 25 ° C. of at least one section is preferably 20 g / mm width or more, more preferably 20 to 1,000 g / mm width, still more preferably 20 to 800 g. / Mm width, more preferably 20 to 700 g / mm width, more preferably 20 to 600 g / mm width, still more preferably 20 to 500 g / mm width, still more preferably 20 to 400 g / mm. Width.

  In the container, the breaking elongation at 25 ° C. of at least one section is preferably 5% or more, more preferably 10% or more, still more preferably 10 to 200%, and still more preferably 15 ~ 200%.

  The maximum tensile strength at 25 ° C. of at least one section of the container after the end of heat generation is preferably 20 g / mm width or more, more preferably 20 to 1,000 g / mm width, and still more preferably. Is 20 to 800 g / mm width, more preferably 20 to 700 g / mm width, more preferably 20 to 600 g / mm width, still more preferably 20 to 500 g / mm width, still more preferably 20 ˜400 g / mm width.

  The elongation at break at 25 ° C. of at least one section of the container after the end of heat generation is preferably 5% or more, more preferably 10% or more, still more preferably 10 to 200%, More preferably, it is 15 to 200%.

  At least one of the maximum tensile strength, breaking elongation, and loop stiffness of the section is preferably 0.3 to 1.7 times the average value of the physical properties of each section, and more preferably 0.4 to 1.6 times, more preferably 0.5 to 1.5 times, still more preferably 0.6 to 1.4 times, and even more preferably 0.7 to 1.3 times.

  At least one of the maximum tensile strength, breaking elongation, and loop stiffness of the section after the heat generation is preferably 0.3 to 1.7 times the average value of the physical properties of each section, and more preferably 0.4 to 1.6 times, more preferably 0.5 to 1.5 times, further preferably 0.6 to 1.4 times, more preferably 0.7 to 1.3 times. It is.

The minimum bending resistance of the bending soft heating element of the present invention is preferably 70 mm or less, more preferably 1 to 70 mm, still more preferably 5 to 70 mm, still more preferably 5 to 60 mm, and still more preferably 5 mm. -50 mm, more preferably 10-50 mm, more preferably 10
40 mm, more preferably 10 to 30 mm. Thereby, a favorable touch is obtained at the time of contact with the body or use.

  The change in the minimum bending resistance of the bending-soft heating element of the present invention is 0 or less, preferably -95 to 0, more preferably -90 to 0, still more preferably -90 to -0.01. More preferably -80 to -0.01, still more preferably -70 to -0.01, still more preferably -60 to -0.01, and still more preferably -50 to -0.01. It is.

The minimum bending resistance ratio of the bending heat generator of the present invention is preferably 100 or less, more preferably 1 to 100, still more preferably 1 to 80, still more preferably 1 to 50, and further Preferably it is 1-40, More preferably, it is 1-30, More preferably, it is 5-30
It is.

The thickness of the heating element is not limited as long as it can be used as a flexible heating element, but is preferably 0.05 to 20 mm, more preferably 0.05 to 15 mm, and still more preferably 0.1 to 10 mm. More preferably, it is 0.1-9 mm, More preferably, it is 0.3-8 mm, More preferably, it is 0.3-7 mm, More preferably, it is 0.5-7 mm, More preferably It is 0.5-5 mm, More preferably, it is 0.3-3 mm.
As described above, the heating element of the present invention warms immediately after the start of use, and has a flexible function composed of two functions of a structural flexible function and an articulated flexible function supported by various physical properties, The heating element is thin and flexible before and during heat generation, after heat generation, that is, before use, during use, and after use, and has a good touch.
In addition, a heating element having a fixing means that adheres to the skin side of clothing that comes into contact with the skin, particularly in the case of a heating element that uses an adhesive layer fixing means on the breathable side, adheres to the skin. It has the characteristics that the body can be directly heated without any harmful effects caused by the agent, and cannot be obtained with a direct-paste heating element. Further, in the case of a double-sided breathable heating element, in particular, in the case of a heating element having a pressure-sensitive adhesive layer as a fixing means on the non-breathable surface side, steam generated from the heating element can be supplied to the skin.
An example of the heating element of the present invention is a section heating element heating element. At least one loop stiffness in the longitudinal direction across the section heating section region and the section of the container is 700 mN / cm or less, and the maximum tensile strength at 25 ° C. of the at least one section is 20 g / mm width. The elongation at break at 25 ° C. is 5% or more, the minimum bending resistance of the heating element is 70 mm or less, and the difference in minimum bending resistance is 0 mm or less.

The rigid and soft heating elements of the present invention have two or more, preferably three or more, more preferably four or more, and still more preferably five or more divided heat generating parts composed of a plurality of exothermic composition molded bodies and one or more. This is a section heating section heating element having a heating section composed of the above-mentioned section and having a minimum bending resistance of 70 mm or less. It is preferable that the divided heat generating portion and the divided portion are configured in a stripe shape.
In addition, at least one loop stiffness in the longitudinal direction crossing the divided heat generating region and the section of the storage body is 700 mN / cm or less, and a heat generating composition is formed between the divided heat generating portions containing the heat generating composition formed body. In a rigid and soft heating element having a structure that does not contain a body and has a structure in which a segmented portion that is a hinge exists, as the heat generation proceeds, the exothermic composition molded body increases in weight, but the hinge ( The bending / soft heating element is easily bent at the section that is a bending area), and is closely attached to the heated body. The minimum bending resistance difference is 0 mm or less and / or the minimum bending resistance change is −95 to 0.
The minimum bending resistance ratio of the bending-soft heating element is preferably 100 or less, more preferably 1 to 100, still more preferably 1 to 80, still more preferably 1 to 50, still more preferably. It is 1-40, More preferably, it is 1-30, More preferably, it is 1-20.
The maximum bending resistance ratio of the bending-soft heating element is not limited, but is preferably 1.1 or more, more preferably 1.15 or more, still more preferably 1.2 or more, and further preferably It is 1.25 or more, More preferably, it is 2.0 or more, More preferably, it is 2.5 or more, More preferably, it is 3.0 or more.

  The stripe heating element of the present invention is a segment heating part heating element in which the segment heating parts are provided in a stripe shape.

The separable heating element of the present invention is a segmented heating element heating element provided with a perforated perforation in a region other than the segment heating part of the segment heating element heating element of the present invention. The perforated perforation is preferably an intermittent cut in which the cut portion is longer than the joint portion. A segment heating part heating element having perforated perforations in at least one section is preferable.
That is, the separable heat generating element of the present invention is a heat generating section heat generating section provided with perforated lines (intermittent cuts) in at least a part of the area other than the section heat generating section of the section heating section heat generating element of the present invention. It is preferable that it is a body.

The expansion / contraction heating element of the present invention is a segment heating part heating element in which staggered cuts are provided in regions other than the segment heating part of the segment heating part heating element of the present invention. A segment heating part heating element having a staggered cut in a part of at least one section is preferable. Alternating cuts are intermittent cuts arranged alternately.

The band heating element of the present invention is a segment heating element heating element having a long stretchable support. An example is one in which a segmented heat generating part or a segmented heat generating part heating element is fixed to a long stretchable support via an adhesive, an adhesive, a heat seal material, or the like.
Moreover, it is good also as a heat generating body which provided fixing means, such as an adhesive and a hook-and-loop fastener, in at least one part of the area | regions of support bodies other than a heat generating body. The fixing means is not limited, but a hook-and-loop fastener is preferable. In addition, the support is not limited as long as the heating element can be fixed, but examples of the support include a packaging material used for a base material and a covering material. When the support is non-breathable, it is fixed so that the non-breathable surface of the heating element faces the support surface. When the support is breathable, the heating element is fixed to the support by selecting as appropriate. Depending on the application, the stretchable support may be replaced with a non-stretchable support.

The tunnel ventilation heating element of the present invention is a heating element having a ventilation part composed of a local ventilation part that leads to the outside, a wide area ventilation part that leads to a heating composition molded body (a heating composition), and a tunnel therebetween. One vent has a larger size of the local vent than the wide vent, and the number of vents is larger than the number of the local vent. There is no restriction on the method of constructing the ventilation part
1) Heat generation using a breathable tunnel sheet in which an intermittent adhesive layer is interposed between a non-breathable packaging material such as a polyethylene film and a wide range breathable packaging material such as a laminate of a nonwoven fabric and a porous film. body,
2) Breathability in which an intermittent adhesive layer is interposed between a non-breathable packaging material having local breathability such as perforation and a wide area breathable packaging material such as a laminate of a nonwoven fabric and a porous film. The heating element used for the tunnel sheet and the ventilation surface
3) A heating element in which the non-breathable packaging material or the packaging material having local breathability is fixed to a ventilation surface of a flat heating element with an intermittent adhesive layer interposed therebetween,
4) Heat generation in which at least a part of the heat generating part composed of the segment ripening part and the partition part is covered with the local ventilation material, and a space part is formed by the side ventilation part, the partition part and the local ventilation material of the segment heat generation part. The body is an example.
In a tunnel ventilation heating element based on a section heating section and a section section, a local ventilation material is fixed to at least a part of the top of one or more section heating sections through an adhesive layer made of an adhesive or an adhesive. There is a tunnel ventilation heating element that is not, and a tunnel ventilation heating element in which the local ventilation material is not fixed to the top of the section heating part.
In addition, the interval between the adhesive layers 1), 2) and 3) is preferably 5 to 80 mm.
The material constituting the adhesive layer is not limited as long as a tunnel can be secured, but examples include an adhesive, a bead-containing adhesive, an adhesive, a double-sided tape, a cored double-sided tape, and the like. Regardless of the excess water value of the exothermic composition and the method for producing the exothermic body, the exothermic body including the above structure is included in the present invention.

The face temperature heating element of the present invention is a heating element that can cover the face.
In particular, a face temperature heating element that heats the eyes and the vicinity thereof is referred to as an eye temperature heating element.
A face temperature heating element that heats the nose and its surroundings is referred to as a nasal temperature heating element.
1. There are two types of face temperature heating elements: 1) an integral type in which the heat generating part and its support are integrated, and 2) an assembly type in which the heat generating part and its support are provided separately and integrated in use.
2. The integrated face temperature heating element can be used immediately and is convenient. From a wide range of heating to heating in a specific area, a variety of products are offered by selecting the number, size, arrangement, etc. of the divided heat generating parts according to each application.
3. The assembly-type facial temperature heating element is 1) an insertion type in which the heating element and the heating part are stored in the storage part of the support, and 2) the heating element and the heating part are fixed to the support through fixing means such as an adhesive layer. There is a pasting formula.
When heating only a specific area of the face, the facial temperature heating element can be used by inserting a minimal heating element into a support such as a mask or by attaching it to the support with a fixing means such as an adhesive. It is also useful. The minimal heating element is not limited, but is a minimal heating element having a single heating part, having two or more divided heating parts, and provided with a cut (perforation, etc.) that can be cut off manually in the dividing part. An example is a segmented heat generating part separated from the heat generating element.
4). The shape of the face temperature heating element is not limited, but examples include rectangular, mask shape, and eye mask shape. 5 A texture material is provided on at least one of the face side and the opposite side of the face temperature heating element. It is preferable to improve the feel.
6). The means for fixing the face temperature heating element to the face or the like is not limited, but examples include an ear strap, an ear strap, and an ear strap rubber.
7). The structure of the expansion / contraction heating element provided with alternate cuts and the face temperature expansion / contraction heating element having various expansion / contraction functions are preferable for tight fixation to the face or the like. As an example of the assembly type, a heating element in which a staggered cut is provided in a support such as a mask and a single heat generating part or a small single heat generating part is inserted or stuck between the staggered cuts is an example.
8). A functional substance or the like may be carried inside or outside the face temperature heating element to have a fragrance effect or a pharmacological effect. For example, an integral type or a push-in type using a sheet material coated with an aqueous pap base is cited.
9. In order to maintain an appropriate temperature of the face temperature heating element to the warmed body (contact temperature to the warmed body is 42 ° C. or lower, preferably 40 ° C. or lower, more preferably 36 to 40 ° C.) It is preferable to use a heating part or a heating element having a structure of a drug heating element provided with a local ventilation material for the face temperature heating element. Temperature buffer materials are also useful.
10. In the face temperature heating element, at least a part of the section heating part is breathable by moisture permeability and also has moisture permeability, so that the skin side surface is moisture permeable and water vapor from the heating composition molded body is directed to the skin. It is preferable to select a type that releases moisture and makes the skin side non-permeable, and a type that does not release water vapor from the heat-generating composition molded body toward the skin.
11. For the eye temperature heating element and the nasal temperature heating element, the above 1. -10. The following items are applicable.
12 The nasal temperature heating element is preferably provided with one or more heating parts or small heating elements at positions corresponding to at least both sides of the nose. In the case of the assembly type, it is preferable that one or more heating parts or small heating elements are attached to the region of the container such as a mask.
13. As an example of the heating element, 1) the integrated type is an integrated face temperature heating element, the integrated eye temperature heating element, the integrated nose temperature heating element, and 2) the assembled type is an assembled type face temperature heating element, an assembled type eye temperature. Heating element, assembled nose temperature heating element, 3) insertion type is insertion type face temperature heating element, insertion type eye temperature heating element, insertion type nose temperature heating element, 4) pasting type is pasting type face temperature heating element Body, pasting type temperature heating element, pasting type nose temperature heating element, 5) face temperature expansion and contraction heating element, eye temperature expansion and contraction heating element, and nasal temperature stretching and heating element in each formula.
Also,
1. A container such as a mask of the present invention may be provided with a moisture holding body that releases water vapor separately from the heating element. As the moisture retainer, non-woven fabric, woven fabric, porous polymer impregnated with water, water-absorbing polymer water absorbed, or the like can be used.
2. There is no limitation on the shape and material of the mask as long as the heating element can be attached and both the nose and the mouth can be covered.

  The temperature buffer material is not limited as long as the temperature from the heat generating part can be buffered, but (1) gauze, various woven fabrics, non-woven fabrics, (2) papers such as paper and synthetic paper, (3 ) Porous film or porous sheet formed from plastic, natural rubber, recycled rubber or synthetic rubber, (4) foamed plastic such as urethane foam having perforations, (5) one or more metal foils such as aluminum having perforations An example is a combination of species. In addition, when controlling temperature using these temperature buffer materials, selection of the material, thickness, etc. of a temperature buffer material are selected suitably. What is necessary is just to select suitably also when making the water vapor | steam which generate | occur | produces from a heat generating body reach eyes or a face. The temperature buffer material can be used not only for eyes and faces but also for other heating elements.

  Moreover, as a space | gap for controlling the temperature which reaches | attains the face of this invention, it is preferable that the distance of a heat generating body and a face shall be 1-10 cm.

  The eye temperature heating element of the present invention, the eye temperature heating element with a local ventilation material, which is an example of the face temperature heating element, and the face temperature heating element with a local ventilation material are locally ventilated on the ventilation surface of the eye temperature heating element or the face temperature heating element. It is a heating element provided with a material, the temperature can be adjusted more precisely by local ventilation, and an appropriate temperature such as 38 to 45 ° C., preferably 38 to 40 ° C. can be maintained.

  The ear hooking part of the present invention is not limited, but examples thereof include rubber strings, cotton strings, and hollow nonwoven fabrics.

The drug heating element of the present invention includes a side ventilation portion that faces at least a part of a heat generation portion composed of a divided heat generation portion and a partitioning portion and is covered with a local ventilation material having a vent hole, and faces a space portion of the division heat generation portion. A space is formed by the section and the local ventilation member, and the local ventilation member is a heating element fixed at least at the entire peripheral portion of the heating element by a seal. A chemical heating element in which a local ventilation material is fixed to at least a part of the top of one or more segmental heating parts via an adhesive layer made of an adhesive or an adhesive, and a local ventilation material of the segmental heating part There is a drug heating element that is not fixed to the top. Further, by using a non-breathable packaging material for the base material and the local ventilation material, the interaction between the exothermic composition molded body (the exothermic composition) and the exposed portion of the exothermic body can be prevented. Accordingly, the interaction between the exothermic composition molded body (the exothermic composition) and the pressure-sensitive adhesive layer containing the functional substance can be prevented, and the respective functions can be maintained. In the conventional heating element, the interaction between the exothermic composition molded body (exothermic composition) and the exposed portion of the heating element cannot be prevented, and the adhesive layer containing the exothermic composition molded body (exothermic composition) and a functional substance. Both of these deteriorated and a drug heating element that could withstand practical use could not be produced. It can be used as a normal heating element or patch without containing a functional substance.
In addition, the ventilation holes of the local ventilation material are usually sealed with a ventilation blocking sheet. When the heating element is used, it is peeled off from the vent hole.

  The separable tunnel ventilation heat generating body of the present invention has a perforation that can be cut into at least one or more of the fixed section portions, wherein the local ventilation material of the tunnel ventilation heat generating body is fixed to at least one or more section portions. Is provided.

  In the detachable drug heating element of the present invention, the local ventilation material of the drug heating element is fixed to at least one section, and a perforated line is provided in at least one of the fixed section. It is a thing.

The tunnel ventilation heating element and the drug heating element having the local ventilation material with the ventilation blocking sheet do not generate heat until the ventilation blocking sheet is removed, and can be stored for a long time. Can be used. Since the packaging material of the outer bag can be omitted, the amount of garbage is reduced and it can contribute to environmental problems. It is useful to provide a fixing means on at least a part of the exposed portion of the tunnel ventilation heating element and the drug heating element including the local ventilation material.

Since the tunnel ventilation heating element and the drug heating element can adjust the ventilation by a space (tunnel) using a local ventilation material, the maximum temperature can be less than 42 ° C, preferably 41 ° C or less, more preferably 36 to Heating can be performed for a long time at 41 ° C, more preferably 36 to 40 ° C. This creates a heating element that does not cause low temperature burns. Incidentally, it is said that low temperature burns occur when the skin temperature is raised to 42-44 ° C. for 6 hours or more. The heating element based on the segment heating element heating element can be heated comfortably without any bias of the heating composition molded body (heating composition) as a heating element from before the heat generation to after the end of the heat generation.
The tunnel ventilation heating element and the drug heating element are heating elements that can finely adjust the ventilation to the heating composition molded body (heating composition) by local ventilation through large ventilation holes, space, and wide ventilation through small ventilation holes. .

An outer temporary folding folded heating element with an outer bag is a heating element in which a matured body folded with an outer bag is temporarily attached via an outer temporary bonding layer.
Moreover, the outer temporary folding folding heating element with an outer bag of the present invention is a heating element stored in a non-breathable storage body in a folded or wound state, and an exposed portion of the heating element body (heating element). At least a part of the outer bag may be temporarily attached to the inner surface of the outer bag which is a non-breathable container (hereinafter referred to as outer temporary attachment). Outer temporary attachment means that the heating element main body and the outer bag which is a non-breathable container are in contact with each other at least partially via the re-peeling weak adhesive layer. Thereby, the movement of the heating element body on the packaging material can be prevented at least until the heating element body is folded together with the packaging material of the outer bag. Thereby, high-speed manufacture of a heating element is attained. There are no restrictions on the number, area, etc. of outer temporary wear. In the case of a heating element having a separator that protects fixing means such as an adhesive layer, the separator is also treated as a heating element.

  Except for the outer temporary folding folding heating element with the outer bag, the heating element of the present invention may be enclosed in the outer bag or folded into the outer bag without the outer temporary wearing.

The fixing means of the present invention is not limited as long as it has a fixing capability capable of fixing the heating element to a required portion. Furthermore, the fixing means is preferably removable. Adhesive layers, key hooks, hook buttons, hook-and-loop fasteners such as Velcro (registered trademark), magnets, bands, strings, ear hooks, and combinations thereof, which are generally employed as the fixing means, are arbitrarily selected. Can be used for
In the case of a band, the adjustment fixing means may be further configured by a combination of a hook-and-loop fastener and an adhesive layer. There are no restrictions on the installation method, installation location, installation pattern, and the like of the fixing means, and it may be determined as appropriate. Moreover, you may provide a separator to a fixing means as protection until it is used. The separator may be provided with a notch such as a back split to facilitate its peeling.
The fixing means of the present invention can be used by appropriately selecting a fixing means (including removable attachment means) that has been disclosed in the prior art, is commercially available, or is used for known disposable warmers and heating elements. .

The pressure-sensitive adhesive layer is composed of a pressure-sensitive adhesive. The pressure-sensitive adhesive is not limited as long as the heating element can be fixed, and those conventionally used for chemical warmers, heating elements and poultices, and those technically disclosed can be used.
The pressure-sensitive adhesive constituting the pressure-sensitive adhesive layer is not limited as long as it has an adhesive force necessary for adhering to the skin and clothes, and is solvent-based, aqueous-based, emulsion-type, hot-melt-type, and reactive. Various forms such as a pressure-sensitive system or a non-hydrophilic pressure-sensitive adhesive, a mixed pressure-sensitive adhesive, a hydrophilic pressure-sensitive adhesive (gel, etc.) are used.
Moreover, as an adhesive layer, even if it has air permeability, it may not have air permeability. What is necessary is just to select suitably according to a use. Examples of the air-permeable pressure-sensitive adhesive layer include a pressure-sensitive adhesive layer in which the pressure-sensitive adhesive is partially present and the whole region is air-permeable, for example, a mesh-shaped pressure-sensitive adhesive layer or a stripe-shaped pressure-sensitive adhesive layer.
The pressure-sensitive adhesive may be laminated as it is on the breathable base material and / or the covering material, or the pressure-sensitive adhesive laminated on the separator may be attached to the base material and / or the covering material.

Examples of the pressure-sensitive adhesive constituting the non-hydrophilic pressure-sensitive adhesive layer of the present invention include acrylic, urethane, rubber, silicon, polyisoprene, polyisobutene, styrene-isoprene-styrene (SIS), and styrene-isoprene. Each type of pressure-sensitive adhesive can be used. In particular, acrylic or styrene-containing systems that can be hot-melt processed are preferably used.
Styrene-containing adhesives include styrene-butadiene-styrene block copolymers (
SBS), a styrene-isoprene-styrene block copolymer (SIS), or a hydrogenated type thereof (SEBS, SIPS) or the like is a styrene hot melt pressure-sensitive adhesive having a base polymer as an example.

The hydrophilic pressure-sensitive adhesive constituting the hydrophilic pressure-sensitive adhesive layer is not particularly limited as long as it has adhesiveness with a hydrophilic polymer or a water-soluble polymer as a main component and is hydrophilic as the pressure-sensitive adhesive. Specifically, hydrophilic polymers such as polyacrylic acid, water-soluble polymers such as sodium polyacrylate and polyvinylpyrrolidone, and the like are listed as examples.

At least a part of the exposed portion of the heating element and the pressure-sensitive adhesive layer is a water retaining agent, a water-absorbing polymer, pH
Conditioner, surfactant, organosilicon compound, hydrophobic polymer compound, pyroelectric material, antioxidant,
You may contain at least 1 sort (s) chosen from the additional component which consists of an aggregate, a fibrous material, a moisturizer, a functional substance, or these mixtures.

The pattern, shape, installation method, and installation position of the pressure-sensitive adhesive layer, the pressure-sensitive adhesive layer, the adhesive layer, and the external temporary attachment layer are not limited as long as they function as the external temporary attachment layer. Examples include various patterns and shapes such as full, partial, continuous, intermittent, single point, net (mesh), stripe, grid, dot, band, rod, polka dot, etc. As mentioned.
As an installation method, an appropriate method such as a melt blow method, a curtain spray method, a gravure method, or a solution type coating method can be given as an example. Known forming methods can also be employed.

With the local ventilation material of the present invention, a space is formed in at least a part of the peripheral edge of the divided heat generating part by covering the heat generating part with the local ventilation material using the difference in height between the divided heat generating part and the dividing part. And it is a packaging material which provides an air pocket at least in part of the peripheral part of a division | segmentation heat_generation | fever part.
By providing the air reservoir between the divided heat generating portions, air permeability between the outside and the divided heat generating portions is adjusted, and a combined heat retaining effect is also provided. In addition, the heat generating part with a difference in elevation is provided on the support with a section heat generating part as a heat generation source at an interval, and the heat generating part with a height difference is covered with a local ventilation material to adjust the air permeability of the section heat generating part,
Surface heat generation in a practical range can be realized by using scattered heat sources. The local ventilation material and the support can be the packaging material used for the base material and the covering material, and have been conventionally disclosed or commercially available or used for known disposable warmers and heating elements. Any packaging material can be appropriately selected and used.

A method for fixing the local ventilation material to the heat generating part and / or the heat generating body, a fixing agent such as an adhesive, a shape,
The state is not limited as long as an air pool can be provided between at least some of the divided heat generating portions.

The breathability of the local ventilation material of the present invention is not limited as long as the ventilation of the heat generating part can be adjusted. A porous film, a nonwoven fabric, a breathable material such as a film or sheet having holes by perforation, and a composite such as a laminate including at least one of them as a part of constituent members, a non-breathable film, a sheet or the like Useful is a laminate or a perforated film, a perforated sheet, and a perforated laminate including them, in which vent holes are provided by perforation.
Also, in the local area of the local ventilation material, a region (ventilation hole) having a larger air permeability than the ventilation surface (ventilation hole) of the heating element body is provided in the local region of the local ventilation material so as to increase the local air permeability. The region may be substantially non-breathable, or may be kept less breathable than the breathability of the vent surface of the segmented heat generating portion to control the flow path and flow of gas such as air. Thereby, the heat insulation of a division | segmentation heat-emitting part and appropriate temperature maintenance can be performed.

The local ventilation material of the present invention is not limited as long as it is a plastic film or sheet having a non-breathable region and a breathable region. Packaging materials used for bags (inner bags) and non-breathable storage bags (outer bags)) and base materials, covering materials, and packaging materials used for outer bags described in the specification of the present invention can be used, What is necessary is just to select suitably. For example, as a non-breathable material, polyethylene, polypropylene, vinyl chloride, vinylidene chloride, polyester such as polyethylene terephthalate, films of various plastic materials such as nylon, KOP (vinylidene chloride coated biaxially stretched polypropylene film), etc. K coat (chlorinated) Vinylidene coat) film, vapor-deposited film (silicon oxide, aluminum oxide, silicon nitride, aluminum nitride, silicon oxynitride and other metal compounds such as oxygen and nitrogen, or films deposited with metal such as aluminum), nonwoven fabrics and various films As an example, a single layer such as a laminate or a laminated film or sheet containing these may be mentioned. Furthermore, PE / adhesive, PP / adhesive, PET / adhesive, PE / nonwoven fabric / breathable adhesive, PE / nonwoven fabric / PE / adhesive, PE / PET / M / PE / nonwoven fabric / breathable adhesive, Examples include PE / heat seal material, PE / nonwoven fabric / heat seal material, PE / nonwoven fabric / PE / heat seal material, PE / PET / M / PE / nonwoven fabric / heat seal material, and the like.
Here, PE is a polyethylene film, PP is a polypropylene film, PET is a polyethylene terephthalate film, M is a metal such as aluminum or silver, or a semiconductor or metal oxide such as silicon oxide, silicon oxynitride, silicon nitride, or aluminum oxide, or an acid. Nitride, a metal compound exhibiting nitride.

The ventilation blocking sheet of the present invention covers at least the breathable portion of the local ventilation material, and is not particularly limited as long as it is non-breathable. The outer bag packaging material, the local ventilation material packaging material, and the like have been disclosed. Alternatively, non-breathable packaging materials such as non-breathable films and sheets used for known chemical warmers and heating elements can be used.
The film or sheet is adhered and adhered to the storage bag in a peelable state by means such as an adhesive, but it is preferable to provide a handle (knob portion) so that it can be easily peeled off during use.

By adhering the ventilation blocking sheet to the ventilation surface (breathable sheet) of the local ventilation material in such a way that it can be peeled off, air (oxygen) penetrates into the inside of the section heating unit during storage and transportation. This prevents heat generation during storage and transportation. On the other hand, since air permeability can be ensured by peeling the ventilation block sheet from the local ventilation material during use, heat can be generated by normal use. Therefore, it becomes possible to ship without individually packaging each heating element as in the past, and several heating elements can be packaged together in one packaging bag, so-called inner bags can be omitted. . In other words, even if one of them is used when packaged together,
Each heating element can be stored in the same way as individually packaged, and can be used without worrying about its storage state, such as sealing after opening.

In the heating element of the present invention, it is also conceivable to form a storage body (section heating part) with a breathable wrapping material and a non-breathable wrapping material in advance and provide a local ventilation material, and then bond a ventilation blocking sheet. In the manufacturing process, a breathable sheet and a ventilation blocking sheet are first laminated to prepare a composite sheet in advance, and then the composite sheet and the non-breathable sheet are bonded together to form a heating element provided with the ventilation blocking sheet. May be produced.

Hereinafter, although the embodiment of the heating element of the present invention is described based on a drawing, it is not restricted only to the explanation in this figure.
FIG. 11A is a plan view showing an example of a rectangular rectangular heating element 32 having one heating part 38 made of one heating composition molded body 37. A solid acrylic pressure-sensitive adhesive layer 42 with a separator 44 is provided on the base 23 side, which is a non-breathable surface.
2 is pasted and heat is transmitted to the body through clothes. FIG.11 (b) is sectional drawing of AA of Fig.11 (a). 22 is a covering material, and 41 is a seal portion.

FIG. 12A is a plan view of an example of a foot temperature heating element 33 having a full foot shape. The base material 23 is a laminate of a polyethylene film anti-slip layer 25 / corrugated liner paper (core material) 24 / polyethylene base material 23 using a metallocene catalyst, and the covering material 22 is a porous film and a nylon non-woven fabric. It is a laminated body. The foot temperature heating element 33 having the full foot shape has a smooth curve and a full foot shape. Reference numeral 38 denotes a heat generating portion, and reference numeral 41 denotes a seal portion.
FIG. 12B is a cross-sectional view taken along the line BB. The seal between the polyethylene base material 23 and the porous film of the covering material 22 is a pressure-bonded seal through the breathable pressure-sensitive adhesive layer 43, but may be a heat seal through a heat seal material. Reference numeral 24 is a core material, 25 is a non-slip layer, and 37 is a heat-generating composition molded body.
That is, the covering material 22 provided with the breathable pressure-sensitive adhesive layer 43 on the porous film side by a melt blow method or the like is placed on the base material 23 on which the exothermic composition molded body 37 obtained by molding the surplus water exothermic composition is laminated. The composition molded body 37 may be sandwiched, and the peripheral edge of the exothermic composition molded body 37 may be pressure-bonded and sealed to form a full-foot-shaped foot temperature heating element 33. In addition, a non-water-absorbing base material 23 such as a non-water-absorbing treated corrugated liner paper using a non-water-absorbing base material 23 such as a polyethylene anti-slip material / non-water-absorbing corrugated liner paper is used as the base material 23. The exothermic composition molded body 37 is laminated on the material, the exothermic composition molded body 37 is sandwiched between the base material 23 and the coating material 22, and the exothermic composition molded body 37 is similarly inserted through the air-permeable adhesive layer 43. It is good also as the foot temperature heating element 33 of a full foot shape by crimping | sealing the peripheral part of this.
Further, a heat-sealing material that is a base material 23 is formed by using a laminated body in which a cardboard liner paper or the like provided with a non-slip material is provided on one surface and a heat-sealable polyethylene film that is a base material 23 is provided on the other surface of the core material 24. The exothermic composition molded body 37 is laminated on the conductive polyethylene fill side, the exothermic composition molded body 37 is sandwiched between the base material 23 and the coating material 22, and the peripheral edge of the exothermic composition molded body 37 is heat-sealed. The foot-shaped foot temperature heating element 33 may be used, or a laminate in which a heat-sealable polyethylene film that is the base material 23 is provided on the other surface of the core material 24 is used as a heat seal that is the base material 23. The exothermic composition molded body 37 is laminated on the conductive polyethylene fill side, the exothermic composition molded body 37 is sandwiched between the base material 23 and the coating material 22, and the peripheral edge of the exothermic composition molded body 37 is heat-sealed. Core material Polyethylene slip layer 25 provided on the other surface of 4 may be the foot warm heating element 33 of the total footprint.
FIG. 12 (c) shows that the two divided heat generating portions 39, 39 are formed so as to be divided at the substantially central portion of the foot temperature heating element 33, and the substantially central portion of the divided portion 40 without the exothermic composition molded body 37. FIG. 6 is a plan view of another example of a foldable foot temperature heating element 33 provided with a perforation 45. The seal between the polyethylene base material 23 and the porous film of the covering material 22 is a heat seal via a heat seal material, but may be a pressure seal via a breathable adhesive layer 43 excluding the heat seal material. . When the foot temperature heating element 33 is folded and stored in the outer bag, it becomes small and easy to carry, and the outer bag can be saved. Reference numeral 41 denotes a seal portion.
The peripheral edge of the exothermic composition molded body 37 in the foot temperature heating element 33 is a pressure-bonding seal using an adhesive, a heat seal using a heat seal material, or a temporary heat that is temporarily sealed with an adhesive and then heat-sealed. It can be used by selecting from the seal.

FIG. 13A is a plan view of an example of a stripe heating element 35 having a minimum bending resistance of 50 mm or less in which six segment heating parts 39 are provided in a stripe shape with the partition part 40 as an interval.
FIG.13 (b) is CC sectional drawing. Six rectangular exothermic composition molded bodies 37 are laminated on the substrate 23 at intervals and covered with a breathable coating material 22, and the peripheral edge of the exothermic composition molded body 37 and the exothermic body. 35 is heat-sealed, an adhesive layer 42 made of a SIS hot-melt adhesive is provided on a base material 23 that is a non-ventilated surface, and a separator 44 is provided thereon. The minimum bending resistance of the stripe heating element 35 (bending soft heating element) of this example is 50 mm or less, and the minimum bending resistance change is zero.
There was no change in the flexibility of the stripe heating element 35 before and after the heat generation. A stripe heating element 35 may be attached to the outside of the garment and heat may be transmitted to the body through the garment, or an adhesive layer 42 for the body may be applied to the body to transmit heat to the body. Good.
Further, both sides may be made to be air permeable and water vapor generated from the heating element may be applied to the body side. The heating element 35 has a structure in which the pressure-sensitive adhesive layer 42 is not provided on the base material 23 side but the air-permeable pressure-sensitive adhesive layer 43 is provided on the air-permeable coating material 22 side, and the air-permeable coating is applied to the inside of clothes such as underwear. The material 22 surface side may be pasted and heat may be transmitted to the body through the base material 23 which is the non-ventilated surface of the heating element 35.
If a perforated perforation is provided in at least one section 40 of the heating element 35, the heating element becomes a separable heating element, and if a staggered cut is provided, it becomes an expansion heating element. If at least a part of each of the divided heat generating portions 39 is covered with a local ventilation material, a tunnel ventilation heat generator or a drug heat generator is obtained.

The surplus water exothermic composition of the present invention comprises iron powder, a carbon component, a reaction accelerator and water as essential components,
There is no restriction as long as the surplus water value is 0.1 or more exothermic composition. The surplus water value is preferably 0.5 to 80. An exothermic composition subjected to oxidation treatment, or an activated iron powder having binding oxygen such as iron oxide or an active iron powder having a carbon component on at least a part of the surface can be used.

The surplus water exothermic composition of the present invention comprises iron components such as iron powder, a carbon component, a reaction accelerator and water as essential components, and the surplus water value is 0.5 to 80, preferably 1 to 80. More preferably 5 to 80, still more preferably 5 to 70, still more preferably 5 to 65, still more preferably 5 to 60, still more preferably 10 to 60, and still more preferably. It is 10-55, More preferably, it is 10-50, More preferably, it is 10-40, More preferably, it is 10-35, More preferably, it is 10-30.

The exothermic composition molded body obtained by molding the excess water exothermic composition also includes a compressed exothermic composition compressed body.

In addition to the above components, the excess water exothermic composition includes a molding aid, a functional substance, a water retention agent such as wood flour and vermiculite, a crosslinked poly (meth) acrylic acid, and a crosslinked poly (meth) acrylamide. Water-absorbing polymers such as sodium sulfite, pH inhibitors such as slaked lime, aggregates such as fossil coral, nonions such as polyoxyethylene alkyl ether, surfactants such as amphoteric ions, anions and cations, Hydrophobic polymer compounds such as polyethylene and polypropylene, organosilicon compounds such as dimethyl silicone oil, far-infrared radiation materials such as ceramics, negative ion generators such as tourmaline and pyroelectric materials, and heat generation aids such as ferrous chloride,
Metals other than iron such as silicon and aluminum, metal oxides other than iron oxide such as manganese dioxide,
Selected from acidic substances such as hydrochloric acid, maleic acid and acetic acid, fibrous materials such as pulp and cotton, fertilizer components such as urea, moisturizers such as glycerin and hyaluronic acid, mold release agents or additional components consisting of mixtures thereof It may contain at least one kind.
In addition, the component of the surplus water exothermic composition (exothermic composition) of the present invention is any component of the exothermic composition that has been disclosed in the past or is commercially available or used for known disposable warmers or heating elements. Can be appropriately selected and used.

Although there is no restriction | limiting of the particle size (particle size) of the water-insoluble solid component of the surplus water exothermic composition component of this invention, Preferably it is 900 micrometers or less, More preferably, it is 300 micrometers or less. The smaller the particle size (particle size), the better. In particular, it is preferable to use a 0.1-300-micrometer thing.
In addition, the moldability and shape retention of the excess water exothermic composition are improved as the particle size of the water-insoluble solid component excluding the reaction accelerator, the water-soluble substance and water is smaller.
The particle size is the average measured by the maximum length or the dynamic light scattering method, the laser diffraction method, etc. in the form in which the amount passing through the sieve is indicated in μm units from the sieve opening (diameter of the sieve) etc. Refers to particle size.

The mixing ratio of the excess water-containing exothermic composition is not particularly limited, but is 0.01 to 100 parts by weight of a carbon component and 0.01 to 50 parts by weight of a reaction accelerator with respect to 100 parts by weight of the iron component. It is preferable to select the blending ratio so as to be 1.0 to 60 parts by weight of water.
Further, preferably, the following composition may be added to the surplus water exothermic composition in the following blending ratio with respect to the iron powder.
That is, with respect to 100 parts by weight of iron powder, 0.01 to 20 parts by weight of a water retention agent, 0.
01 to 20 parts by weight, pH adjusting agent 0.01 to 5 parts by weight, hydrogen generation inhibitor 0.01 to 12 parts by weight, metal other than iron 1.0 to 50 parts by weight, metal oxide other than iron oxide 0-50 parts by weight, surfactant 0. O 1-5 parts by weight, hydrophobic polymer compound, aggregate, fibrous material, functional substance, organosilicon compound, pyroelectric substance 0.01 to 10 parts by weight, moisturizer, fertilizer component, heating aid 0.01 to 10 parts by weight and 0.01 to 1 part by weight of an acidic substance are preferable, respectively. In addition, you may make it mix | blend a magnetic body further and should just determine a mixing | blending ratio suitably as needed.

The iron powder is not limited, but cast iron iron powder, atomized iron powder, electrolytic iron powder, reduced iron powder, sponge iron powder, and iron alloy powder thereof can be used as an example. Furthermore, these iron powders may contain carbon or oxygen, and may contain other metals, including a metal containing 50% by weight or more of iron. The type of metal contained as an alloy or the like is not particularly limited as long as the iron component acts as a component of the exothermic composition, but examples include metals such as aluminum, manganese, copper, and silicon, and semiconductors. The metal of the present invention includes a semiconductor. Examples of the iron powder having a fibrous form and other metals include steel fibers, aluminum fibers, and magnesium fibers.
In the iron powder of the present invention, the content of the metal other than iron is usually 0.01 with respect to the whole iron powder.
-50% by weight, preferably 0.1-10% by weight.

As the iron powder having an oxygen-containing film on at least a part of the iron surface,
A. An active iron powder in which an essential component of an exothermic composition or an acidic substance or other necessary component added thereto is contact-treated with an oxidizing gas, the iron component is partially oxidized, and the surface of the iron component is at least partially oxidized,
B. An active iron powder having a wustite content of 2 to 50% by weight as an X-ray peak intensity ratio of iron,
C. Iron powder having an iron oxide film with a thickness of 3 nm or more on the surface,
D. Non-water-absorbing base material made of exothermic composition formed by molding a surplus water exothermic composition containing iron powder, carbon component, reaction accelerator and water as essential components and surplus water value of 0.5-80 The exothermic precursor sandwiched between the non-water-absorbing coating material has a moisture permeability of 0.1 to 6.0 g / (m ² · day) and an oxygen permeability of 0.05 to 10 ml / (m ² · day). After being enclosed in an outer bag composed of a certain packaging material, in a natural environment that is not damaged, and in a controlled environment selected from a holding temperature of 1 to 80 ° C. and a holding humidity of 1 to 90% By changing the holding time held in the heat generating composition to at least 25 hours to 2 years, at least part of the iron component in the exothermic composition molded body is converted so that at least part of the surface has iron oxide. Iron powder,
E. An example of the active iron powder is a mixture of iron powder other than the active iron powder.

The thickness of the iron oxide film which is an oxygen-containing film covering the surface of the iron powder is usually 3 nm or more, preferably 3 nm to 100 μm, more preferably 20 nm to 100 μm, using Auger electron spectroscopy. More preferably, the thickness is 30 nm to 100 μm, more preferably 30 nm to 50 μm, still more preferably 30 nm to 1 μm, still more preferably 30 nm to 500 nm, and still more preferably 50 nm to 300 nm. By making the thickness of the iron-containing film of iron 3 nm or more, the thickness of the iron-containing film of iron can exert an effect of promoting the oxidation reaction, and immediately contact the oxidizing gas such as air to cause the oxidation reaction immediately. Can be started. If the thickness of the iron oxygen-containing coating is 100 μm or more, the heat generation time may be shortened, but it can be used depending on the application.
The other is active iron powder having wustite, and the amount of wustite is usually 2 to 50% by weight, preferably 5.01 to 50% by weight, as an X-ray intensity ratio with iron. Preferably it is 5.01 to 40 weight%, More preferably, it is 6 to 40 weight%, More preferably, it is 7 to 30 weight%, More preferably, it is 7 to 25 weight%. Even if it exceeds 50% by weight, the heat build-up is good, but the heat generation duration is shortened. When it is less than 2% by weight, the heat build-up becomes dull.
The amount of wustite was evaluated using an X-ray analyzer as a ratio of the integrated intensity of the peak of wustite 220 to the integrated intensity of the peak of 110 face of iron.

The carbon component is not limited as long as it is a carbonaceous material. Activated carbon (coconut shell charcoal, charcoal powder,
(Calendar bituminous coal, peat, lignite), carbon black, acetylene black, graphite, carbon nanotube, carbon nanohorn, and the like. Also, a fibrous form such as activated carbon fiber can be used.

The reaction accelerator is not limited as long as it can accelerate the exothermic reaction. Examples include inorganic electrolytes such as sodium chloride, potassium chloride, and calcium chloride. The electrolyte currently used for the well-known disposable warmer and a heat generating body can also be used. These reaction accelerators are not targeted for the particle size (particle size).

The water-absorbing polymer is not particularly limited as long as it has a crosslinked structure and has a water absorption ratio of 3 times or more with respect to its own weight. Moreover, what cross-linked the surface may be used. Conventionally known water-absorbing polymers and commercially available products can also be used.
As the water-absorbing polymer, a crosslinked poly (meth) acrylic acid, a crosslinked poly (meth) acrylate, a crosslinked poly (meth) acrylate having a polyoxyalkylene group, a poly N-vinylcarboxylic acid amide-based crosslinked Examples include a crosslinked body, a polyvinyl alcohol-based crosslinked body, and a crosslinked poly (meth) acrylamide. These may be used alone or in combination of two or more.

The molding aid, in combination with moisture, improves the strength of the water film, strengthens the aggregation between the composition material particles of the exothermic composition such as iron powder, improves the strength of the exothermic composition molded body, There is no limitation as long as the maintenance of this can be strengthened, but there are water-soluble polymers, hydrophilic polymers, inorganic compounds and the like. Cellulose-based, starch-based, poly (meth) acrylic acid (salt, ester) -based, syrup-based, seaweed, plant mucilage, microbial mucilage, protein-based, polysaccharide-based, organic-based, inorganic-based, synthetic-based, Examples thereof include polymer molding aids and the like. For example, cellulose derivative-based molding aids such as carboxymethylcellulose (CMC), sodium carboxymethylcellulose, ethyl acetate, hydroxymethylcellulose, starch-based water absorbents such as dextrin, pregelatinized starch, and starch for processing, and polyacrylic such as sodium polyacrylate Syrups such as acid salt, corn syrup, mannit syrup, seaweed extracts such as carrageenan, agar,
Plant resin mucous substances such as gum arabic, tranquil gum, karaya gum, etc., mucous substances produced by microorganisms such as xanthan gum, dulan gum, bull run, guard run, animal proteins such as gelatin, albumin, casein, plant proteins such as soy protein, wheat protein, pectin, alla Polysaccharide thickeners such as plant fruit mucous substances such as pinogalactin, plant seed mucous substances such as guar gum, locust pea gum, tamarind seed gum, tara gum, alginates such as sodium alginate,
Gum arabic, gum tragacanth, locust peanut, guar gum, gum arabic,
Organic systems such as pectin and corn starch, inorganic systems such as bentonite, montmorillonite, kaolin, sodium silicate, aluminum silicate, stearates, polyethylene oxide, polyvinyl alcohol, polyvinyl pyrrolidone, polyvinyl acetate emulsion, acrylic sulfonic acid polymer materials, Poly-N-vinylacetamide, or maleic anhydride copolymer such as methylcellulose, hydroxypropylmethylcellulose, hydroxypropylcellulose, carmellose sodium, carboxyvinyl polymer, ethylene-maleic anhydride copolymer, acrylic acid-starch copolymer Examples thereof include microcrystalline cellulose, N-vinylacetamide copolymer and the like, or combinations of two or more thereof. Conventionally known water-soluble polymers and thickeners can also be used.

  The content of the molding aid is not limited as long as the heat generation performance is not significantly lowered, but is preferably 0.001 to 2 parts by weight, more preferably 0.001 to 100 parts by weight with respect to 100 parts by weight of the iron powder. 1.5 parts by weight, more preferably 0.001 to 1 part by weight, still more preferably 0.01 to 1 part by weight, still more preferably 0.01 to 0.5 part by weight, Preferably it is 0.01-0.2 weight part, More preferably, it is 0.01-0.1 weight part, More preferably, it is 0.01-0.099 weight part, More preferably, it is 0.01 It is -0.095 weight part, More preferably, it is 0.02-0.095 weight part, More preferably, it is 0.05-0.090 weight part.

The functional substance may be any substance as long as it has some function such as medicinal effect and aroma. Perfumes, herbs, herbs, Chinese medicines such as kakkonto, oils such as safflower oil, dried plant products such as mugwort and loquat leaves and mogusa, transdermal drugs, pharmaceutically active substances, fragrances, lotions,
Examples include emulsions, poultices, fungicides, antibacterial agents, bactericides, deodorants or deodorizers, magnetic bodies, and the like.
Furthermore, specific examples of functional substances include catechin, acidic mucopolysaccharide, chamomile, horse chestnut, vitamin E, nicotinic acid derivative, blood circulation promoter such as alkaloid compound; horse chestnut, flavone derivative, anthocyanidin ,vitamin
P, Kinsenka, Silanol, Terminaria, Mayus, etc. swelling improver; aminophylline, tea extract, caffeine, xanthene derivative, inosit, dextran sulfate derivative, horse chestnut, escin, anthocyanidin, organic iodine compound, hardwood, cedar, mannenrou , Slimming agents such as ginseng and hyanoreuronidase; indomethacin, dl
-Camphor, ketoprofen, shoga extract, red pepper extract, methyl salicylate,
Analgesics such as glycol salicylate; lavender, rosemary, citron, juniper,
Examples include perfumes such as peppermint, eucalyptus, rosewood, orange, and moisturizers such as hyaluronic acid and glycerin. One or more kinds can be used.

The percutaneously absorbable drug is not particularly limited as long as it is transdermally absorbable.
Sleep sedatives, antiepileptics, neuropsychiatric agents), diuretics, antihypertensives, lotus vasodilators, antitussives, antihistamines, arrhythmic agents, cardiotonic agents, corticosteroids, local anesthetics, etc. It is done. These drugs are used alone or in combination of two or more as required.

The packaging material constituting the base material, covering material, covering material, local ventilation material and support of the present invention is not limited as long as it functions as a packaging material for a heating element. The packaging material may have a single-layer structure or a multilayer structure, and the structure is not limited.
Moisture-permeable packaging material, non-breathable packaging material, breathable packaging material, non-breathable packaging material, water-absorbing packaging material, non-water-absorbing packaging material,
Examples include stretchable packaging materials, stretchable packaging materials, foamed packaging materials such as polyurethane foam and polystyrene foam, heat-sealable packaging materials having a heat-sealing layer, and films, sheets, nonwoven fabrics, woven fabrics, and the like. The composite can be used in a desired form depending on the desired application. Examples thereof include films, nonwoven fabrics, woven fabrics, sheets and the like, or combinations thereof. Specific examples include polyolefins such as polyethylene and polypropylene, polyesters, polyamides, polyurethanes, polystyrenes, thermoplastic resins such as polyethylene-vinyl acetate copolymers, synthetic resins, papers, natural rubber, recycled rubber, synthetic rubber, Examples include films, sheets, non-woven fabrics, woven fabrics, foams, non-water-absorbing papers that have been non-water-absorbing treated with wax, oil, and the like, and composites thereof. .
Any packaging material disclosed or commercially available or used for known disposable warmers or heating elements can be appropriately selected and used.

The surface in contact with the skin including the base material, the covering material, and the support member of the present invention preferably has a good texture and is composed of a flexible material.
Materials constituting the surface include polyolefins such as polyethylene and polypropylene, polyesters, polyamides, polyurethanes, polystyrenes, polyethylene-vinyl acetate copolymers, synthetic resins such as polyethylene terephthalate, plant fibers such as cotton and hemp, wool, silk Examples include animal fibers such as rayon, recycled fiber such as rayon and cupra, non-woven fabrics and fibers using semi-synthetic fibers such as acetate, textile materials such as Japanese paper, western paper, synthetic paper, cloth, woolen fabric, leather materials, etc. . These can be used alone or in a stack of a plurality. In addition, after encapsulating the exothermic composition molded body with the base material and the covering material, the second base material and the second covering material having a good texture may be further coated thereon.

  Usually, the base material is made of a non-breathable packaging material, and the covering material is made of a breathable packaging material. The exothermic composition or the packaging material on which the exothermic composition molded body is laminated is the base material, and the exothermic composition molded body. The packaging material to be covered is a coating material, and it does not matter whether air permeability is present or not. As the heating element, at least a part of the heating element only needs to have air permeability. The breathability of the storage bag constituting the heating element can be obtained by using a breathable packaging material on one or both sides of the bag.

The air permeability of the air permeable packaging material, the heat generating part, and the section heat generating part is a water vapor transmission rate by the Lissy method (JIS K-7129A method), preferably 50 to 10,000 g / (m ² · day), more preferably. is ^{100~5,000g / (m 2 · day)} , still more preferably ^{100~2,000g / (m 2 · day)} , more preferably from ^{100~600g / (m 2 · day)} , More preferably, it is 150-500 g / (m < ² > * day).
If the moisture permeability is less than 50 g / (m ² · day), the calorific value is reduced, and a sufficient heating effect cannot be obtained.
Exceeding (m ² · day) is not preferable because the heat generation temperature becomes high and there is a possibility that a safety problem may occur. However, depending on the application, it is not limited to use at a moisture permeability exceeding 10,000 g / (m ² · day) or in some cases close to an open system.

The non-breathable packaging material is not limited as long as it is a non-breathable packaging material, but the moisture permeability is preferably 10 g / (m ² · day) or less, more preferably 0.1 to 10 g / a ^(m 2 · day), more preferably ^{0.1~6g / (m 2 · day)} .

Although there is no restriction | limiting in the layer structure of the said base material and coating | covering material, It is preferable to have a four-layer structure from a single layer structure.
The base material is a non-woven film / porous film two-layer structure, a non-breathable film / non-woven cloth two-layer structure, a non-breathable film / adhesive layer / separator three-layer structure, a non-breathable film / non-woven cloth / adhesive layer For example, a four-layer structure of / separator and a four-layer structure of separator / breathable pressure-sensitive adhesive layer / nonwoven fabric / porous film may be mentioned.
Examples of the covering material include a two-layer structure of nonwoven fabric / porous film, a two-layer structure of nonwoven fabric / perforated film, and a four-layer structure of separator / breathable adhesive layer / nonwoven fabric / porous film.
The base material is a packaging material on which the exothermic composition molded body is laminated, and the covering material is a packaging material that covers the exothermic composition molded body. In the base material or the covering material, air permeability and non-air permeability can be arbitrarily selected.

The breathable packaging material is not limited as long as it has breathability.
For example, a porous film, a non-breathable film such as a polyethylene film, a perforated film, a nonwoven fabric, a woven fabric, papers, and a laminate including the same, a nonwoven fabric, a nonwoven fabric, a nonwoven fabric, and a nonwoven fabric. Non-breathable packaging material laminated with polyethylene film with fine holes using needles etc. to give breathability, non-woven fabric with porous structure and thermocompression controlled to control breathability, porous Examples thereof include films and films such as laminates obtained by laminating a nonwoven fabric on a film or a porous film via a breathable adhesive layer or a breathable adhesive layer. The breathable material may be only one layer, but by using a plurality of layers, it is possible to provide effects such as concealing the shade of the heating element and preventing the falling powder from being deposited on the surface.

  The porous film is not limited, but is a polyolefin resin such as polyethylene, linear low-density polyethylene or polypropylene, a fluorine resin such as polytetrafluoroethylene, and an inorganic material such as calcium sulfate, barium sulfate, or titanium oxide. A porous film provided with micropores by interfacial peeling of a mixed sheet with a filler can be selected as appropriate.

Examples of the nonwoven fabric include, but are not limited to, thermoplastic resins such as rayon, nylon (polyamide), polyester, acrylic, polypropylene, vinylon, polyethylene, polyurethane, and cupra, cotton, cellulose, synthetic pulp, wood pulp, non-wood pulp, Examples include semi-synthetic fibers such as rayon and acetate, dry nonwoven fabrics, wet nonwoven fabrics, spunbonds and spunlaces formed from vinylon fibers and polyester fibers.
The nonwoven fabric which consists of composite fiber of a core sheath structure may be sufficient. The nonwoven fabric on the surface in contact with the skin is preferably a brushed (fluffed) nonwoven fabric. Moreover, a stretchable nonwoven fabric and a non-stretchable nonwoven fabric can also be used.

The non-breathable packaging material is not limited as long as it is non-breathable. Polyethylene, polypropylene, nylon, vinyl chloride, vinylidene chloride, acrylic, polyester, polyvinyl alcohol, ethylene-vinyl acetate copolymer and other films, sheets, coatings and laminates thereof, and metals such as aluminum Examples thereof include a laminate of metal (including semiconductor) compounds such as silicon oxide and a composite packaging material using them. Examples of the metal compound containing a semiconductor include silicon oxide layers, oxides such as aluminum oxide, silicon oxynitride, and silicon nitride, nitrides, and oxynitrides.

The core material is not limited as long as it functions as a core material, but films and sheets made of polymers such as polyethylene, polypropylene, nylon, acrylic, polyester, polyvinyl alcohol, ethylene-vinyl acetate copolymer, crepe paper, craft Examples include thin paper such as corrugated paper, corrugated liner paper, corrugated core, and paper such as thick paper such as coat poles, rubbers, or one or more laminates thereof, and composite materials using these.
The installation method is not limited and may be used alone, but rubber that serves as an anti-slip layer and a core material may be used, or the same material as that of the base material or the covering material may be used. In addition, what is necessary is just to select rigidity suitably with the site | part of the applied foot.

The paper is not particularly limited as long as it is water-absorbing paper.
Tissue paper, crepe paper, thin paper such as craft, liner paper, corrugated core,
Cote like cardboard, or those of one or more of the laminate Ru mentioned.

  Examples of the stretchable packaging material include films, sheets, nonwoven fabrics, woven fabrics, or laminates thereof that extend 1.005 times or more of the original length without being damaged when a tensile force is applied. It does not matter whether this tensile force is removed or not. Extensibility also includes stretchability. Textiles, films, spandex yarns, yarns, strings, natural rubber, synthetic rubber, elastomers, stretchable shape memory polymers, etc., mixed products of these and non-stretchable materials, mixed papers, and combinations thereof Examples include flat plates, strands, ribbons, tapes, slit films, scrim structure elastic bodies, foams, non-woven fabrics, or composite stretchable materials by laminating them or non-extensible or non-stretchable materials. As mentioned. Moreover, the packaging material which provided the alternate cut | notch is also mentioned as an example of an elastic packaging material.

In addition, materials such as stretchable packaging materials and stretchable packaging materials are described as materials constituting the band of Japanese Patent Application Laid-Open No. 2002-54012, and are incorporated herein by reference to the same gazette.

  The heat seal material constituting the heat seal layer may be a single material or a composite material having a heat seal layer, and is not limited as long as at least a part thereof can be joined by heating. For example, ethylene-based hot-melt resins such as polyolefins such as polyethylene and polypropylene, olefin copolymer resins, ethylene-vinyl acetate copolymer resins, ethylene-acrylic acid ester copolymer resins such as ethylene-isoptyl acrylate copolymer resins, etc. Examples thereof include thermoplastic resins such as polyamide-based hot melt resins, petular-based hot melt resins, and polyester-based hot melt resins, and films and sheets thereof. Moreover, what mix | blended various additives, such as antioxidant, can also be used for hot-melt-type resin and its film and sheet | seat. In particular, low density polyethylene and polyethylene using a metallocene catalyst are useful.

In the present invention, a pressure-sensitive adhesive is used before heat-sealing the base material and the covering material, and preferably, the base material and the covering material are temporarily attached using a breathable pressure-sensitive adhesive layer made of an adhesive. After forming, heat sealing may be performed. The heat seal part has at least a part of an area composed of an adhesive and a heat seal material constituting the temporary attachment part. There is no wrinkle, no seal breakage, and reliable heat sealing can be achieved. Thereby, the speed of heat sealing can be increased.

In the stripe shape, a plurality of segmented heat generating portions are provided at intervals in a stripe shape. That is, “providing the segmented heat generating portions of the present invention at intervals in the form of stripes” means that a plurality of segmented heat generating portions are spaced in a streak shape (elongated and continuous) (parallel line shape or parallel curve shape). Etc.). One streak is preferably composed of one section heat generating portion.
In this case, the section heating section and the section section may be linear or curved. Moreover, as long as the following conditions are satisfied, one streak may be composed of two or more divided heat generating portions and one or more divided portions.

T ≧ 2.5S and P ≦ 0.5T

T: Length of one section heating part
S: Width of one section heating part
P: Length of the section

An example is the arrangement of streaks composed of segmented heat generating parts in parallel stripes (vertical stripes, horizontal stripes, diagonal stripes, vertical wave stripes, horizontal wave stripes, diagonal wave stripes, etc.).

In the case of a heating element having segmented heating parts provided in a stripe shape at intervals in the present invention, the absolute value of the difference in bending resistance in two directions that are perpendicular to each other is maximized. A heating element provided with parallel hexahedron shaped heat generating portions spaced in stripes, a heating element further provided with an adhesive layer, and a heating element provided with adhesive layers spaced in a stripe shape, Very flexible in one direction,
Since it is rigid in one direction, it exhibits effects such as relieving symptoms such as stiff shoulders, back pain, and muscle fatigue, and particularly relieving symptoms of menstrual pain. Furthermore, it can be wound in the width direction of the heating element with a size of almost the width dimension, is compact, and is convenient for storage. When a separator is provided, the separator can be wound by using a separator having low bending resistance.
In addition, when providing a heating element along the body, the body has many two-dimensional curved surfaces, such as shoulders, legs, belly,
The waist, arms, and the like are substantially linear in one direction, and the other two directions are substantially curved. Accordingly, the heating element of the present invention, which is almost linear in one direction and can form a curved surface in the other two directions, can form a two-dimensional curved surface. Ideal for symptom relief and treatment.

  The thickness of the adhesive layer for fixing the local ventilation material is not limited as long as the local ventilation material can be fixed, but is preferably 1 to 1000 μm.

  The thickness of the pressure-sensitive adhesive layer is not limited as long as the heating element can be fixed, but is preferably 5 to 1000 μm.

  The end of “open the end of the divided heat generating portion of the heating element after the end of heat generation” indicates at least one of one end or both ends of the divided heat generating portion.

1. Loop stiffness measurement
A circular loop with a loop length of 50 mm is formed near the center of a strip-shaped sample having a width of 0.5 to 1 cm, preferably 1 cm, and a loop length of 50 mm or more, and the load applied when the circular loop is pushed in by 5 mm from the outside is measured per sample width. The value displayed in mN / cm is defined as loop stiffness.
If necessary, it is converted with 1 gF≈9.8 mN.
That is,
Loop stiffness [mN / cm]
= Measurement loop stiffness [mN] / Measurement sample width [cm]

The number of measurement points is 1 point or more, preferably 2 points or more, and more preferably 3 points or more.
2. Samples for measuring loop stiffness 1) Opening the end of the section heating element of the sample heating element of the heating element storage body before heat generation, taking out the excess water heating composition or the hydrous heating composition, and removing the remaining storage body Sample of a section of the storage body cut in the longitudinal direction of the area including the seal part at the periphery of the heating element in a direction that passes through the section heating part area that is the seal area and the partition part that is the seal area almost orthogonally. And
2) Sample of storage body for heating element after completion of heat generation When the heating element is heated in a normal atmosphere and the temperature of the heating element falls below 37 ° C, it is assumed that the use has ended, and the heating element after the end of heat generation Open the end of the section heat generating part, take out the heat generating composition (heat generating composition molded body), and pass through the section heat generating area that is the non-seal area of the remaining container and the section that is the seal area almost orthogonally In this direction, a section of the storage body cut in the longitudinal direction of the region including the seal portion at the periphery of the heating element is used as a sample.
3) Sample of section of heating element before heat generation A section cut in the longitudinal direction of the region including the seal portion around the heating element along the section of the heating element before heat generation is used as a sample. It may be a section of the storage body of the heating element before heat generation.
4) Sample of the section of the heating element after the end of heat generation A sample cut in the longitudinal direction of the region including the seal part around the heating element along the section of the heating element after the end of heat generation is used as a sample. . It may be a section of the storage body of the heating element after the end of heat generation.

In measuring the loop stiffness of the sample,
1) Marking may be performed with a magic pen, a felt pen, or the like on a loop forming portion having a loop length of 50 mm.
2) When the fixing means such as the adhesive layer is provided, the loop stiffness is measured with the fixing means inside, except for the separator.
3) When the length of the sample is short, it may be measured by adding a fixing film or the like to the sample. For example, measurement may be performed by adding a fixing film or the like to a sample having a loop length of 50 mm.
4) If the heating element or storage body has local ventilation material, texture material, temperature buffer material, etc., remove them and cut out the sample. However, when they are fixed to the heating element or the storage body and the heating element or the storage body breaks when they are removed, samples are prepared by removing them as much as possible. This also applies to samples for measuring maximum tensile strength and elongation at break.

  The apparatus for measuring the loop stiffness is not limited as long as the loop stiffness can be measured, but examples include a loop stiffness tester manufactured by Toyo Seiki Co., Ltd., a loop stiffness tester manufactured by Tester Sangyo Co., Ltd., and the like.

In the present invention, the bending resistance indicates rigidity (harness, stiffness) or flexibility, and conforms to the JIS L 1096A method (45 ° cantilever method) except that the heating element itself is used as a sample. Is. That is, one side of the heating element is placed on the scale base line on a smooth horizontal table having a slope of 45 ° (degrees) at one end. Next, the heating element is slid gently in the direction of the slope, and when the center point of one end of the heating element contacts the slope, the position of the other end is read with a scale. The bending resistance is indicated by the length (mm) that the heating element has moved. Each of the five heating elements is measured and an average value is obtained.
However, the horizontal base has a heat generating composition formed body (heat generating composition) containing a heat generating portion having a moving direction distance of 5 mm or more and a distance in a direction perpendicular to the moving direction of 20 mm or more, The length of the placed heating element crosses the area where the exothermic composition molded body (exothermic composition) exists, or exists and exists where the exothermic composition molded body (exothermic composition) exists. It is that it crosses the region that is not straight.
1) Measurement calculation method of bending resistance of heating element having pressure-sensitive adhesive layer (1) The surface of the heating element that does not have the pressure-sensitive adhesive layer is placed on a horizontal table and measured.
(2) When the side of the heating element having the pressure-sensitive adhesive layer corresponds to the side of the horizontal base, a separator is attached to the pressure-sensitive adhesive layer, and the surface on the side of the pressure-sensitive adhesive layer with a separator is placed on the horizontal base for measurement.
(3) A separator that covers the pressure-sensitive adhesive layer of the heating element with a pressure-sensitive adhesive layer is a plastic film having a bending resistance of 30 mm or less, a plastic film having a thickness of 50 μm or less, preferably 25 μm or less, or lightly Use a soft, soft film such as a plastic film that can be wrinkled. Examples include wrap films such as polyethylene film, vinylidene chloride film, and vinyl chloride film.
2) Measurement and calculation method of minimum bending resistance For each heating element, place one surface on a horizontal table and measure the average value in the vertical and horizontal directions, or in one direction and the direction perpendicular thereto. Get the direction's stiffness. The other surface is placed on a horizontal table and measured in the same manner to obtain each bending resistance. The smallest value of the bending resistance is set as the minimum bending resistance.
3) As for the bending resistance of the packaging material such as the base material and the covering material, a short test piece of 100 mm × 200 mm in length is prepared, and the bending resistance in the longitudinal direction (200 mm direction) is adopted.

The minimum bending resistance change is a value indicating the ratio of the minimum bending resistance after the heat generation to the heating element or the heating section before the heat generation.
The minimum bending resistance change is calculated by the following equation.

Minimum bending resistance change = ((B−A) / A) × 100
A: Minimum bending resistance (mm) of the heating element before heat generation
B: The minimum bending resistance (mm) of the heating element after completion of heat generation
1) Ignore heat generation during measurement and measure immediately.
2) The obtained heating element is left in air in a 20 ° C. environment without wind to generate heat. When the heating is finished and the temperature of the heating element becomes equal to the environmental temperature, the use is finished. The bending resistance of the heating element in the direction showing the minimum bending resistance of the heating element before heating is measured to obtain the minimum bending resistance of the heating element after the end of heating.
Or, it is attached to the body or clothes to generate heat, and after the end of heat generation, measure the bending resistance of the heating element in the direction indicating the minimum bending resistance of the heating element before heat generation, and generate heat after the end of heat generation. Let it be the minimum bending resistance of the body.
3) The measurement direction of the minimum bending resistance of the heating element before heat generation and the measurement direction of the minimum bending resistance of the heating element after completion of heat generation are the same measurement direction.
4) The minimum bending resistance (A) of the heating element before heat generation cannot be measured, and the minimum bending resistance (B) after the heat generation ends.
Can be measured, the longest length of the heating element in the same direction as the direction having the minimum bending resistance (B) of the heating element after completion of heat generation is defined as the minimum bending resistance (A).

The minimum bending resistance is the bending resistance with respect to the minimum bending resistance of the heating element or the heating portion and the total length in the direction, and is calculated by the following equation.
Minimum bending resistance = (A / L) × 100
A: Minimum bending resistance of heating element or heating part
L: Total length of the heating element or heating part in the direction showing the minimum bending resistance

It demonstrates using FIGS. 14-18 using the surplus water value prescription | regulation method of exothermic compositions, such as the said excess water exothermic composition.
The filter paper is a filter medium having a retained particle diameter of 4 to 6 μm and a drainage time of 70 to 90 seconds / 100 ml, preferably “2 types” (No. 2) of JIS-P3801.
In an environment of 20 ° C., using the exothermic composition 59 which is a sample adjusted in the environment, eight reference lines 47 are written radially from the center point at intervals of 45 °, and the retained particle diameter is 4 A filter medium having a filtration time of ˜6 gm and a drainage time of 70 to 90 seconds / 100 ml, preferably “2 types” (No. 2) filter paper 46 (FIG. 14) of JIS-P3801 is used. Here, a filter paper 46 (FIG. 14) of “2 types” (No. 2) of JIS-P3801, in which eight reference lines 47 are written radially from the center point at 45 ° intervals, is attached to a support plate (stainless steel plate). Etc.) is placed on 53 and a measuring plate 48 having a length of 150 mm × width of 100 mm having a cylindrical through hole 49 having an inner diameter of 29 mm × height of 20 mm is placed in the center of the filter paper 46 (FIG. 15). The exothermic composition 59 is placed in the vicinity of the cylindrical through hole 49, the filling plate 54 is moved along the measurement plate 48 (FIG. 16), the exothermic composition 59 is filled, and the exothermic composition 59 generates heat during the measurement. In order not to cause a reaction, a non-water-absorbing plastic film (70 μm polyethylene film or the like) 56 is placed so as to cover the cylindrical through hole 49, and further, a pressing plate (thickness 5 mm × length 150 mm × width) is placed thereon. 150mm stainless (Less plate etc.) 55 is placed (FIG. 17), and after holding for 5 minutes, the filter paper 46 is taken out (FIG. 18), and the penetration distance 58 of water or aqueous solution is measured along the reference line 47 written radially. The distance from the diameter circle 52 of the cylindrical through hole of the cylindrical through hole to the infiltration tip was read in mm units, and the 8 infiltration distances (m1, m2, m3, m4, m5, m6, m7, m8) that were read were arithmetically averaged. The value (mm) is divided (divided) by the height (mm) 51 of the cylindrical through-hole, and a value obtained by further multiplying by 100 is obtained as the surplus water value. As the surplus water value of the sample, it is preferable to measure three points for the same sample, average the three surplus water values, and use the average value as the surplus water value of the sample.
As described above, the surplus water value of the surplus water exothermic composition is defined using the surplus water exothermic composition instead of the exothermic composition.
The surplus water value is a surplus water value of the current exothermic composition, and is a value that is not related to the total water content of the exothermic composition. JIS-P3801 “Type 2” (No. 2) filter paper is a filter medium having a retained particle diameter of 5 μm and a drainage time of 80 seconds / 100 ml.
It is determined that the smaller the difference between the measured surplus water value and 0 (zero), the better the exothermic characteristics of the exothermic composition 59, particularly the rising exothermic property. Further, the diameter circle 52 of the cylindrical through hole of the measurement plate 48 may be described on the measurement filter paper 46 before the measurement. The line type of the reference line 47 and the diameter circle 52 is not limited. 50 is the diameter of the cylindrical through hole, and 57 is the penetration mark.
That is, the surplus water value of the present invention penetrates into the filter paper from the exothermic composition filled in the cylindrical through hole having an inner diameter of 29 mm × height of 20 mm placed on the “two types” filter paper of JIS-P3801. A value obtained by dividing the permeation distance of water or an aqueous solution by the height (mm) of the cylindrical through hole is a percentage.

  The “two types” filter paper of JIS-P3801 of the present invention also includes a filter paper corresponding to the “two types” filter paper of JIS-P3801. Filter paper No. made by Nakamura Science Co., Ltd. 2 and filter paper No. 2 manufactured by Toyo Filter Paper Co., Ltd. 2. Whatman filter paper grade 2 etc. are mentioned as an example.

The material of the measuring device such as the measuring plate is not limited as long as it is non-water-absorbing, but a metal such as stainless steel,
Examples thereof include synthetic resins such as thermoplastic resins and thermosetting resins, and minerals such as stones and rocks.

The surplus water value defining method of the surplus water-containing exothermic composition (exothermic composition) of the present invention was provided on a filter medium having a retained particle diameter of 4 to 6 μm and a drainage time of 70 to 90 seconds / 100 ml. The permeation distance of water or an aqueous solution 5 minutes after penetrating the periphery of the cylindrical excess water exothermic composition (exothermic composition) having an inner diameter of 29 mm × height of 20 mm was measured, and the excess water exothermic composition (exothermic The permeation distance (soaking distance) per unit height (mm) of the composition) (mm) is defined as the surplus water value.
The filter medium is preferably a filter paper. According to JIS-P3801, “1 type”, “2 types”, “3 types”, “4 types”, “5 types A”, “5 types B”, “5 types C”, “ One example of each of the “six types” of filter papers is given.
The filter paper is JIS-P3801 “2 types” (No. 2) filter paper (with a reserved particle diameter of 5 μm,
Further, the drainage time is more preferably 80 seconds / 100 ml).

Hereinafter, an exothermic composition containing excess water or an exothermic composition having no excess water, that is, an exothermic composition having an excess water value of 0 or more will be described as an exothermic composition.

  The surplus water value regulating method of the exothermic composition of the present invention is a value that can quickly measure the surplus water amount in the exothermic composition at the present time. Since the permeation distance of the excess water in the exothermic composition to the filter medium is proportional to the amount of excess water in the exothermic composition and the height or thickness of the exothermic composition, the excess water amount in the exothermic composition at the time of measurement is exothermic. It is the value shown as the surplus water value comprised from the ratio of the osmosis | permeation distance to the filter medium of the surplus water in a composition, and the height of a heat-generating composition.

The excess water value defining method in the exothermic composition of the present invention is a value obtained by quantifying the amount of excess water in the exothermic composition from the height of the exothermic composition and the penetration distance of the excess water amount in the exothermic composition into the filter paper, Regardless of the total amount of water in the exothermic composition, the amount of excess water in the exothermic composition at the time of measurement can be specified, the measurement operation is simple, easy, and can be measured quickly, and in the exothermic composition at the time of measurement This is a method for calculating a new specified amount of surplus water that indicates the amount of surplus water.

  The exothermic composition of the present invention having an excess water value defined by the method for defining the excess water value in the exothermic composition of the present invention can predict moldability and exothermicity, and is useful for designing exothermic compositions and exothermic bodies. In addition, even after manufacturing the heating element, by measuring the excess water value of the heating composition in the heating element, the deterioration state of the heating composition and the heating element due to moisture reduction, that is, the heating composition and heating element at that time The health of the heating element can be easily checked.

When the surplus water in the exothermic composition or the mixed composition becomes an appropriate amount, the hydrophilic group in the composition component is hydrated by dipole interaction or hydrogen bond, and is also high around the hydrophobic group. Presumed to exist with structural properties. As a result, it is estimated that sandy sand is formed, and moldability of the exothermic composition occurs. In some sense, surplus water is a connected substance. In addition to this, there is also water in a state that can be called free water that can move freely. If surplus water increases, the structure will soften and free water will increase.
By using an appropriate amount of surplus water, each component particle is held together by the surface tension of moisture, causing the exothermic composition to form, and the moisture does not substantially function as an air barrier layer. It generates heat upon contact. It is the surplus water value of the present invention that determines an appropriate amount of surplus water.

  The surplus water value of the present invention is a value obtained by quantifying the surplus water that is the amount of water that can be easily moved out of the system or exuded out of the water contained in the exothermic composition, reaction mixture, or exothermic mixture. It is.

The surplus water value of the exothermic composition of the present invention is such that surplus water that is water or an aqueous solution that can move in the moisture of the exothermic composition is in the direction perpendicular to the height or thickness direction of the exothermic composition on the filter paper. It is determined by the amount of penetration of water or aqueous solution. Since the water or aqueous solution in which the exothermic composition can move moves in the weight direction and there is filter paper, the exothermic composition moves along the filter paper in a direction perpendicular to the height or thickness direction of the exothermic composition. The surplus water value is shown as a value per unit height.

  Since the penetration of the excess water amount of the exothermic composition of the present invention into the filter medium or the filter paper is greatly affected by the thickness or height of the exothermic composition, the excess water value of the exothermic composition in the exothermic body of the present invention is the exothermic composition. The value incorporating the thickness or height is adopted.

The surplus water value of the present invention is a more practical value because the surplus water value indicating the surplus water amount in the exothermic composition can be obtained regardless of the total water content in the exothermic composition.

  Hereinafter, the present invention will be described in more detail with reference to examples.

Example 1
As shown in FIG. 9, there is provided a heating element manufacturing apparatus comprising a surplus water heating composition supply device having a blade that comes into contact with the peripheral surface, a corresponding fixed magnet, and a hollow cylindrical rotating body having a molding portion comprising a through hole. used.
A continuous base material composed of a polyethylene film having an adhesive layer with a separator on one side is fed from a base material supply roll, and the base material supported by a belt is the lowest point of rotation of a hollow cylindrical rotating body. It is supplied to a hollow cylindrical rotating body so as to come into contact with the outer periphery in the vicinity, 100 parts by weight of reduced iron powder (particle size of 300 μm or less), 10 parts by weight of activated carbon, 5 parts by weight of wood powder, 1 part by weight of a water-absorbing polymer, sulfurous acid An excess water exothermic composition with an excess water value of 20 in which 0.8 parts by weight of sodium, 0.8 parts by weight of slaked lime, and 11% saline were mixed was supplied to the exothermic composition supply device. A hollow cylindrical rotating body is rotated, and the surplus water heating composition is smoothly filled in a molded part composed of a through-hole by a blade and a fixed magnet corresponding thereto, and further, a base supported by an external endless belt. The material was detached from the cylindrical rotating body in a substantially horizontal direction, and the exothermic composition molded body was laminated on the base material. Next, a continuous covering material composed of a laminate of a porous film and a nylon nonwoven fabric is supplied, and the covering material is laminated on a continuous base material on which the exothermic composition molded body is laminated. The peripheral portion of the exothermic composition molded body and the peripheral portion of the exothermic body were heat sealed to obtain a continuous exothermic body provided with the exothermic composition molded body intermittently.
Next, a cutting process was performed to obtain a stripe heating element having six section heating portions as shown in FIG. Next, the heating element was sealed in an outer bag which is a non-breathable storage bag. After 24 hours, the heating element was taken out from the outer bag and subjected to a heat generation test. The flexibility before and after the heat generation did not change, and the flexibility was maintained. The blade contact angle (θt) was 60 °. The surplus water exothermic composition was not bridged on the portions of the scraping means and the scraping means support wall, and smooth filling (scraping filling) was smoothly performed once on all the molded parts.

(Comparative Example 1)
This was carried out in the same manner as in Example 1 except that the blade contact angle (θt) was 90 °. The excess water exothermic composition bridged between the blade and the blade support wall, and smooth filling could not be achieved.

(Comparative Example 2)
This was performed in the same manner as in Example 1 except that the blade contact angle (θt) was 178 °. The blade did not work as a blade, causing uneven filling of the excess water exothermic composition, and smooth filling could not be performed well.

(Example 2)
As shown in FIG. 10, a surplus water heat generating composition supply device having a blade that comes into contact with the peripheral surface, a corresponding external fixed magnet, and a chain conveyor-like rotator provided with a sheet-like mold having a molding portion comprising a through-hole. A heating element manufacturing apparatus consisting of In the present embodiment, a sheet-shaped misalignment prevention device (not shown) was used.
From the base material supply device, a continuous base material in which a polyethylene film is laminated on a corrugated core paper on one side is sent out, and the base material supported by the belt is a sheet-like mold near the lowest point of rotation of the chain conveyor-like rotating body Is supplied to the chain conveyor-like rotator so as to abut on the outer surface of the resin, 100 parts by weight of reduced iron powder (particle size of 300 μm or less), 10 parts by weight of activated carbon, 5 parts by weight of wood powder, 0.8 part by weight of a water-absorbing polymer, A surplus water exothermic composition having an excess water value of 30 in which 0.8 part by weight of sodium sulfite, 0.8 part by weight of slaked lime, and 11% saline was mixed was supplied to the surplus water exothermic composition supply device. The rotating body of a chain conveyor is rotated, and the surplus water heating composition is smoothly filled with a blade and a fixed magnet corresponding to the molding part composed of a through hole, which is lined with the base material supported by a belt. . Next, the sheet-shaped mold was detached from the base material, and the exothermic composition molded body was laminated on the base material. Next, a continuous covering material composed of a laminate of a porous film and a nylon nonwoven fabric is supplied, and the covering material is laminated on a continuous base material on which the exothermic composition molded body is laminated. The peripheral portion of the exothermic composition molded body and the peripheral portion of the exothermic body were heat sealed to obtain a continuous exothermic body provided with the exothermic composition molded body intermittently.
Next, cutting treatment was performed to obtain a foot temperature heating element as shown in FIG. Next, the foot temperature heating element was sealed in an outer bag which is a non-breathable storage bag. After 24 hours, the heating element was taken out from the outer bag and subjected to a heat generation test. Also, after manufacturing a continuous heating element, the foot temperature heating element manufactured by pasting and cutting a polyethylene film using a metallocene catalyst as the anti-slip layer on the core paper side of the corrugated cardboard is prevented from slipping and is easy to use. , Warmed the legs for a long time.
Further, instead of heat sealing, a coating material in which a breathable pressure-sensitive adhesive layer is provided on the porous film side using an adhesive layer coating device is used, and the heat generating composition molded body is laminated on the continuous base material. The covering material was laminated, and the peripheral portion of the exothermic composition molded body and the peripheral portion of the exothermic body were pressure-bonded to obtain a continuous exothermic body in which the exothermic composition molded body was intermittently provided. Next, a cutting process is performed, and FIG.
A foot temperature heating element as shown in FIG. The foot temperature heating element was easy to use and warmed the foot for a long time. The blade contact angle (θt) was 45 °. The surplus water exothermic composition was not bridged on the portions of the scraping means and the scraping means support wall, and smooth filling (scraping filling) was smoothly performed once on all the molded parts.

(Comparative Example 3)
The same operation as in Example 2 was performed except that the blade contact angle (θt) was 91 °. The excess water exothermic composition bridged between the blade and the blade support wall, and smooth filling could not be achieved.

(Comparative Example 4)
The same operation as in Example 2 was performed except that the blade contact angle (θt) was 179 °. The blade did not work as a blade, causing uneven filling of the excess water exothermic composition, and smooth filling could not be performed well.

(Example 3)
Instead of the surplus water exothermic composition supply device in Example 2, two flat rod-like wings (a spatula) are provided facing each other, and the flat rod-like wings rotate along the inner wall of the surplus water exothermic composition supply device. Example 2 Using an excess water exothermic composition supply device provided with a rotary type excess water exothermic composition bridging prevention device, the amount of the excess water exothermic composition held in the excess water exothermic composition supply device is shown in Example 2. The same procedure as in Example 2 was performed except that the ratio was 3 times. Results similar to those of Example 2 were obtained. The rotary type excess water exothermic composition bridging prevention device prevented bridging of the excess water exothermic composition in the vicinity of the blade, but had no function of stirring the entire excess water exothermic composition.

Example 4
A surplus water exothermic composition supply device having a blade that abuts on the peripheral surface, a corresponding fixed magnet, and a heating element manufacturing device comprising a hollow cylindrical rotating body having a molding part consisting of a through hole were used. Further, the blade is a plate having a thickness of 4 mm × width of 65 mm, a blade having a sharp tip, the thickness constituting the inner and outer walls of the surplus water heating composition supplying device is 8 mm, and the surface of the opening of the blade is The long side is 70 mm × the short side is 30 mm, and extends in the direction opposite to the straight line passing through the center point of the three-dimensional space and the center point (contact center point) of the contact position (contact line) of the blade, The contact angle (θt) of the blade, which is an angle formed by the tangent line passing through the contact center point, was 45 °.
A continuous base material composed of a polyethylene film having an adhesive layer with a separator on one side is fed from a base material supply roll, and the base material supported by a belt is the lowest point of rotation of a hollow cylindrical rotating body. It is supplied to a hollow cylindrical rotating body so as to come into contact with the outer periphery in the vicinity, 100 parts by weight of reduced iron powder (particle size of 300 μm or less), 10 parts by weight of activated carbon, 5 parts by weight of wood powder, 1 part by weight of a water absorbent polymer, sulfurous acid A surplus water exothermic composition having an excess water value of 20 in which 0.8 part by weight of sodium, 0.8 part by weight of slaked lime, and 11% saline was mixed was supplied to the surplus water exothermic composition supply device. A hollow cylindrical rotating body is rotated, and the surplus water heating composition is smoothly filled in a molded part composed of a through-hole by a blade and a fixed magnet corresponding thereto, and further, a base supported by an external endless belt. The material was detached from the cylindrical rotating body in a substantially horizontal direction, and the exothermic composition molded body was laminated on the base material. Next, a continuous covering material composed of a laminate of a porous film and a nylon nonwoven fabric is supplied, and the covering material is laminated on a continuous base material on which the exothermic composition molded body is laminated. The peripheral portion of the exothermic composition molded body and the peripheral portion of the exothermic body were heat sealed to obtain a continuous exothermic body provided with the exothermic composition molded body intermittently. The excessive water-containing exothermic composition did not form a bridge, and smoothing (scraping filling) was smoothly performed once on all molded parts.
Next, cutting treatment was performed to obtain a stripe heating element having six section heating portions. Next, the heating element was sealed in an outer bag which is a non-breathable storage bag. After 24 hours, the heating element was taken out from the outer bag and subjected to a heat generation test. The flexibility before and after the heat generation did not change, and the flexibility was maintained.

(Example 5)
Iron powder (particle size 300 μm or less) 100 parts by weight, activated carbon (particle size 300 μm or less) 7.0 parts by weight, wood powder (particle size 150 μm or less) 3.0 parts by weight, water-absorbing polymer (particle size 300 μm or less) An excess water exothermic composition having an excess water value of 25, in which 1 part by weight, 0.5 part by weight of slaked lime, 0.7 part by weight of sodium sulfite and 11% saline were mixed, was used. The excess water value is the filter paper No. 2 (circular) was used to define.
A laminate of a nylon nonwoven fabric and a polyethylene porous film was used as a coating material, and a polyethylene film having an adhesive layer with a separator was used as a substrate. The breathability of the coating material was 600 g / (m ² · day) in terms of moisture permeability by the Lissy method.
An exothermic composition molded body obtained by molding a surplus water exothermic composition through a mold using a molding die having a thickness of 1.2 mm and having six through-holes with substantially circular arcs provided at intervals. Laminated on the polyethylene film surface of the base material, and then covered with the covering material so that the polyethylene porous film side covers the exothermic composition molded body, the excess water exothermic composition side of the seal surface of the seal portion Use a pair of seal molds that are rounded adjacent to the ends and have 6 spaces with a margin value of 2.5, seal the peripheral edge of the exothermic composition, cut, Length 65 mm x width 8 mm, section is 65 mm length x width 8 mm, six section heat generating sections are provided at intervals with the section section as an interval, the seal width is 10 mm, length 108 mm x width 85 mm A plurality of heating elements were produced. The heating element was not cut off and was excellent in appearance.
Next, the heating element was sealed in a non-breathable outer bag and allowed to stand at room temperature for 24 hours. 24 hours later
The heating element was removed from the outer bag and the physical properties were measured. The loop stiffness of the heating element storage body was 98 mN / cm. Also, the heating element was taken out from the outer bag, fixed to clothes with an adhesive layer, and subjected to a heat test, but the heating element was bent from the section and fixed tightly along the clothes, and immediately became warm. Warm time lasted more than 6 hours. The heating element was a heating element having excellent heat generation performance and excellent flexibility.

(Example 6)
Iron powder (particle size 300 μm or less) 100 parts by weight, activated carbon (particle size 300 μm or less) 5.5 parts by weight, wood powder (particle size 150 μm or less) 2.3 parts by weight, water-absorbing polymer (particle size 300 μm or less) A surplus water exothermic composition having an excess water value of 30 mixed with 5 parts by weight, 0.5 parts by weight of slaked lime, 0.7 parts by weight of sodium sulfite and 11% saline was used. The excess water value is the filter paper No. manufactured by Nakamura Science Co., Ltd. 2 was used.
A laminate of a polypropylene nonwoven fabric and a polyethylene porous film was used as a breathable coating material, and a laminate of a polypropylene nonwoven fabric and a polyethylene porous film was used as a substrate. The breathability of the covering material was 300 g / (m ² · day) in terms of moisture permeability by the Lissy method.
A exothermic composition molded body obtained by molding the surplus water exothermic composition through a mold using a molding die having a thickness of 2 mm having 10 through-holes with rounded corners (substantially arc-shaped). Laminated on the polyethylene film surface, and then covered with the covering material so that the porous film side covers the exothermic composition molded body, the height value is 24, the margin value is 1.5, and the corners are rounded (substantially arc-shaped) ) With a pair of seal molds, heat-sealing the peripheral edge of the heat-generating composition molded body, and then a mesh-like breathable adhesive made of a SIS-based adhesive by a melt-blowing method on the breathable surface. An agent layer was provided, and a separator was further applied and cut to obtain a plurality of heating elements. The heating element had no seal and was excellent in appearance. The heating element is composed of a maximum section heating section having a length of 70 mm x a width of 13 mm and a minimum section heating section having a length of 50 mm and a width of 13 mm, and a corner heating section having a rounded corner is a section having a width of 10 mm at the center. 5 pieces are provided in a stripe shape in the short direction, with a section of 8 mm in width as an interval, the seal portion around the heating element is 10 to 12 mm in width, and the seal portions at both ends in the longitudinal direction are It was a broad bean-shaped heating element having a width of 10 to 15 mm and a maximum length of 234 mm and a maximum width of 93 mm. The heating element was not cut off and was excellent in appearance. The heating element had a round shape at the section heating part and the corner of the heating element.
The heating element was sealed in an outer bag and left at room temperature for 24 hours. After 24 hours, the heating element was taken out from the outer bag, the end of the section heating part of the heating element was cut, and a storage body excluding the heating composition molded body was obtained. The loop stiffness of the container was measured to obtain 80 mN / cm. Further, the heating element was taken out from the outer bag and fixed to the inner side of the underwear so that the air-permeable pressure-sensitive adhesive layer faced the inner side of the underwear, and a heat test was performed. Along with the body, it was fixed tightly, became warm immediately, and the warm time lasted more than 6 hours. The heating element was a heating element having excellent heat generation performance and excellent flexibility.

(Example 7)
Iron powder (particle size 300 μm or less) 100 parts by weight, activated carbon (particle size 300 μm or less) 5.5 parts by weight, wood powder (particle size 150 μm or less) 2.3 parts by weight, water-absorbing polymer (particle size 300 μm or less) A surplus water exothermic composition having an excess water value of 30 mixed with 5 parts by weight, 0.5 parts by weight of slaked lime, 0.7 parts by weight of sodium sulfite and 11% saline was used. The excess water value is the filter paper No. manufactured by Toyo Filter Paper Co., Ltd. 2 was used.
A laminate of a nylon nonwoven fabric and a polyethylene porous film was used as a breathable coating material, and a polyethylene film having an adhesive layer with a separator was used as a base material. The breathability of the covering material was 400 g / (m ² · day) in terms of moisture permeability by the Lissy method.
An exothermic composition molded body obtained by molding the excess water exothermic composition through a mold using a molding die having a thickness of 2.0 mm and having one round-shaped (approximately arc-shaped) through-hole at the corner. Laminated on the polyethylene film surface of the material, and then covered the covering material so that the porous film side covers the exothermic composition molded body,
Adjacent to the end of the seal surface that is the seal part on the side of the surplus water heating composition side is provided,
In addition, the cross-sectional shape of the seal surface is formed in a concavo-convex shape with a pitch of 0.8 mm, the seal surface has an oblique grid pattern on the entire surface, and at least at the corners of all the convex portions of the concavo-convex toward the packaging material R is provided, the height value is 24, the margin value is 2.5, the corner has one rounded (substantially arc-shaped) space portion, and the width of the seal portion in the region corresponding to the peripheral portion of the heating element is Using a pair of seal molds of 50 mm, the peripheral portion of the exothermic composition molded body is sealed and cut, the exothermic part is 95 mm long × 78 mm wide, and the seal width of the peripheral part of the exothermic body is 6 mm. Thus, a heating element having a length of 107 mm × width of 90 mm and a rounded corner (substantially arc shape) was obtained.

(Example 8)
Similar to Example 7, using a surplus water exothermic composition, a base material, and a covering material, and having six through-holes with rounded corners provided at intervals. The excess water exothermic composition was molded using a 0 mm mold, and the molded exothermic composition molded body was laminated on the substrate. A covering material is placed thereon, a radius is provided adjacent to the end of the sealing surface that is the sealing portion on the side of the surplus water heating composition side, and the cross-sectional shape of the sealing surface is an irregular shape with a pitch of 0.8 mm. The sealing surface has an oblique grid pattern on the entire surface, and further, rounds are provided at the corners of all the projections at least on the projections and depressions facing the packaging material, with a height value of 24 and a margin value of 1.5. Using a pair of seal molds that have six round-shaped (substantially arc-shaped) space portions, and the width of the seal portion in the region corresponding to the peripheral portion of the heating element is 50 mm, a heat-generating composition molded body The peripheral part of the heat sink and the peripheral part of the heating element are heat-sealed and cut. With the part as the interval, the seal width is 6mm, the length A heating element having a size of 123 mm × width 89 mm and rounded corners was obtained.

(Comparative Example 5)
In the same manner as in Example 7, the excess water exothermic composition was molded, and the molded exothermic composition molded body was laminated on the substrate. A covering material is placed thereon, a radius is provided adjacent to the end of the sealing surface that is the sealing portion on the side of the surplus water heating composition side, and the cross-sectional shape of the sealing surface is an irregular shape with a pitch of 0.8 mm. The seal surface has an oblique grid pattern on the entire surface, and further, at least the corners of the projections and depressions facing the packaging material are provided with rounds at a height value of 1.05 and a margin value of 0.05. A pair of seal molds having a space portion with a rounded corner (substantially arc shape) and a width of the seal portion in the region corresponding to the peripheral portion of the heating element is 50 mm. The periphery of the molded body is heat-sealed, the heat generating portion is 95 mm long × 78 mm wide, the seal width of the peripheral portion of the heat generating body is 6 mm, 107 mm long × 90 mm wide, and the corners are rounded. A heating element was obtained.

(Comparative Example 6)
In the same manner as in Example 8, the excess water exothermic composition was molded, and the molded exothermic composition molded body was laminated on the substrate. A covering material is placed thereon, a radius is provided adjacent to the end of the sealing surface that is the sealing portion on the side of the surplus water heating composition side, and the cross-sectional shape of the sealing surface is an irregular shape with a pitch of 0.8 mm. The seal surface has an oblique grid pattern on the entire surface, and further, at least the corners of the projections and depressions facing the packaging material are provided with rounds at a height value of 1.05 and a margin value of 0.05. And a pair of seal molds having six space portions with rounded corners (substantially arc-shaped) and a width of the seal portion in the region corresponding to the peripheral portion of the heating element, and a heat generating composition The peripheral part of the molded body and the peripheral part of the heating element are heat-sealed. The section heating section having the heating composition molded body has a length of 77 mm × width of 11 mm, and the section that is the sealing area has a length of 77 mm × width of 9 mm, six The segment heat generating part is provided at intervals with the section part as an interval. A heating element having a width of 6 mm, a length of 123 mm × a width of 89 mm, and rounded corners was obtained.

The heating elements of Example 7, Example 8, Comparative Example 5, and Comparative Example 6 were as shown in Result 1.
In Result 1, “edge break” means that a break occurs in the seal portion of the heating element. Further, the value in result 1 indicates the number of heating elements that cause edge breakage when 10 heating elements are sealed.

(Result 1)

Example Edge Appearance Exothermic Contents
Cut defective leak
─────────────────────────────
Example 7 None Good Normal None
Example 8 None Good Normal None
Comparative Example 5 10 Defect Abnormal Some
Comparative Example 6 10 Defect Abnormal Some

The seal temperature was 145 ° C.

As can be seen from the result 1, in the seal part of the heating elements of Comparative Examples 5 and 6, a part of the exothermic composition molded body collapses and scatters in the seal region, and the edge of the seal part is cut off. Many collapsed leaks were seen. Further, the boundary line between the seal portion of the obtained heat generating element and the heat generating composition molded body side was not linear or curved. The heat generation performance was also poor.
In contrast, the heating elements of Example 7 and Example 8 were excellent in heat generation performance, including no seal breakage or sealing failure, including the end of the sealing part on the side of the heat-generating composition molded body.

Example 9
Iron powder (particle size 300 μm or less) 100 parts by weight, activated carbon (particle size 300 μm or less) 5.5 parts by weight, wood powder (particle size 150 μm or less) 2.3 parts by weight, water-absorbing polymer (particle size 300 μm or less) A surplus water exothermic composition having an excess water value of 20 in which 0 part by weight, 0.5 part by weight of slaked lime, 0.7 part by weight of sodium sulfite and 11% saline were mixed was used.
The surplus water value was measured using a filter paper No. 2 manufactured by Toyo Filter Paper Co., Ltd. as “2 types” (No. 2) filter paper of JIS-P3801. 2 (circular) was used, and the excess water value of the exothermic composition was regulated by the regulation method.
That is, in an environment of 20 ° C., eight reference lines were written at 45 ° intervals radially from the center point using the surplus water heating composition which is a sample prepared in the environment. Filter paper No. 2 manufactured by Toyo Filter Paper Co., Ltd., which is a “two types” (No. 2) filter paper of P3801 2 is placed on a support plate (stainless steel plate, etc.), and a measuring plate having a smooth surface with a length of 150 mm × width of 100 mm having a cylindrical through-hole with an inner diameter of 29 mm × height of 20 mm is placed at the center of the filter paper. Place the excess water exothermic composition in the vicinity of the cylindrical through-hole, move the filling plate along the measurement plate, fill the excess water exothermic composition, and the excess water exothermic composition undergoes an exothermic reaction during the measurement. In order to prevent this, a non-water-absorbing plastic film (70 μm polyethylene film or the like) is placed so as to cover the cylindrical through-hole, and further, a pressing plate (thickness 5 mm × length 150 mm × width 150 mm stainless steel) is placed thereon. Place the flat plate, etc.) and hold for 5 minutes. Then, take out the filter paper, and measure the penetration distance of water or aqueous solution from the radial circle of the cylindrical through hole of the measurement plate to the penetration tip along the radial reference line. Distance in mm The value (mm) obtained by arithmetically averaging the read and read eight permeation distances (m1, m2, m3, m4, m5, m6, m7, m8) is divided by the height (mm) of the cylindrical through hole. Furthermore, the value which multiplied 100 was calculated | required and it was set as the excess water value. The surplus water value was measured at three points, the three surplus water values were averaged, and the average value was defined as the surplus water value. A laminate of a non-woven fabric made of nylon and a porous film was used as a coating material, and a laminate of a non-slip absorbent material made of polyethylene and a non-water-absorbing corrugated liner paper was used as a non-water-absorbing substrate. The breathability of the coating material was 900 g / (m ² · day) in terms of moisture permeability by the Lissy method. Using a molding die having a 1.0 mm thick all-foot-shaped mold hole having one all-foot-shaped through-hole, the surplus is contained on the non-water-absorbent corrugated liner paper material. The water exothermic composition was molded through a mold and laminated as the exothermic composition molded body. Next, a breathable pressure-sensitive adhesive layer is provided on the porous film side of the covering material by a melt blow method, and the covering material is covered so that the breathable pressure-sensitive adhesive layer covers the exothermic composition molded body. The peripheral part of the exothermic composition molded body is pressure-sealed by a seal mold having one space portion having a value of 5.0, and consists of a single exothermic part exothermic body, full foot, seal width 10 mm × maximum length 220 mm × A foot temperature heating element having a maximum width of 70 mm was prepared. Similarly, other foot temperature heating elements were prepared, and a plurality of pairs of foot temperature heating elements were prepared. The heating element was not cut off and was excellent in appearance.
Next, the heating element was sealed in a non-breathable outer bag and allowed to stand at room temperature for 24 hours. Thereafter, the foot temperature heating element was taken out from the outer bag and used, but the foot temperature heating element was not rounded in the shoe, and it was very convenient for foot temperature use. The minimum bending resistance of the foot temperature generator was 220 mm or more.

(Example 10)
Iron powder (particle size 300 μm or less) 100 parts by weight, activated carbon (particle size 300 μm or less) 7.0 parts by weight, wood powder (particle size 150 μm or less) 3.0 parts by weight, water-absorbing polymer (particle size 300 μm or less) An excess water exothermic composition having an excess water value of 20 in which 5 parts by weight, 0.5 parts by weight of slaked lime, 0.7 parts by weight of sodium sulfite and 11% saline were mixed was used.
The surplus water value was measured using a filter paper No. 2 manufactured by Nakamura Science & Technology Co., Ltd. as “2 types” (No. 2) filter paper of JIS-P3801. 2 (circular) was used, and the excess water value of the exothermic composition was regulated by the regulation method.
That is, in an environment of 20 ° C., eight reference lines were written at 45 ° intervals radially from the center point using the surplus water heating composition which is a sample prepared in the environment. The filter paper No. 2 manufactured by Nakamura Science and Technology Co., Ltd., which is “2 types” (No. 2) filter paper of P3801. 2 is placed on a support plate (stainless steel plate, etc.), and a measuring plate having a smooth surface with a length of 150 mm × width of 100 mm having a cylindrical through-hole with an inner diameter (diameter) of 29 mm × height of 20 mm at the center of the filter paper. Place the surplus water exothermic composition in the vicinity of the cylindrical through-hole, move the filling plate along the measurement plate, fill the surplus water exothermic composition, and further include the surplus water exothermic composition during the measurement. In order to prevent an exothermic reaction, a non-water-absorbing plastic film (70 μm polyethylene film, etc.) is placed so as to cover the cylindrical through hole, and further, a pressing plate (thickness 5 mm × length 150 mm × width) 150mm stainless steel flat plate, etc.), hold for 5 minutes, take out the filter paper, and permeate the penetration distance of water or aqueous solution from the radial circle of the cylindrical through hole of the measurement plate along the radial reference line The distance to the tip The value (mm) obtained by arithmetically averaging each of the eight permeation distances (m1, m2, m3, m4, m5, m6, m7, m8) read in m units is the columnar through-hole height (mm). The value obtained by further multiplying by 100 was obtained as the surplus water value.
The surplus water value was measured at three points, the three surplus water values were averaged, and the average value was defined as the surplus water value.
A laminate of a nylon nonwoven fabric and a polyethylene porous film was used as a breathable coating material, and a polyethylene film having an adhesive layer with a separator was used as a base material. The breathability of the covering material was 290 g / (m ² · day) in terms of moisture permeability by the Lissy method.
An exothermic composition molded body obtained by molding a surplus water exothermic composition through a mold using a 1.5 mm-thick mold having six through-holes with rounded corners provided at intervals. Laminated on the polyethylene film surface of the base material, and then covered with the covering material so that the porous film side covers the exothermic composition molded body, and on the end portion of the seal surface, which is a seal portion, on the side of the excess water exothermic composition side Use a pair of seal molds that are adjacent to each other, have a height value of 33, a margin value of 2.0, and have six corner-shaped space portions, and seal the peripheral portion of the exothermic composition molded body. The section heating part is 73 mm long × 15 mm wide, the sectioning part is 73 mm long × 5 mm wide, and the six part heating parts are provided at intervals with the sectioning part as an interval, and the seal width is 6 mm. Thus, a plurality of heating elements having a length of 127 mm and a width of 85 mm were produced. The heating element had no seal and was excellent in appearance.
Next, the heating element was sealed in a non-breathable outer bag and allowed to stand at room temperature for 24 hours. 24 hours later
The heating element was removed from the outer bag and the physical properties were measured. The loop stiffness of the heating element storage body was 49 mN / cm, and the loop stiffness of one section was 88 mN / cm. Also, the heating element was taken out from the outer bag and fixed to the clothes with the adhesive layer, and the heat generation test was conducted, but the heating element was bent from the section and fixed tightly along the clothes, immediately becoming warm and warm. The time lasted more than 6 hours. The heating element was a heating element having excellent heat generation performance and excellent flexibility.

(Example 11)
Iron powder (particle size 300 μm or less) 100 parts by weight, activated carbon (particle size 300 μm or less) 5.5 parts by weight, wood powder (particle size 150 μm or less) 2.3 parts by weight, water-absorbing polymer (particle size 300 μm or less) An excess water exothermic composition in which 9 parts by weight, 0.5 parts by weight of slaked lime, 0.7 parts by weight of sodium sulfite and 11% saline were mixed was used. The excess water value of the excess water exothermic composition was 25, and the rising temperature rising rate was 7 ° C./5 minutes or more.
A laminate of a nylon non-woven fabric and a polyethylene porous film was used as a covering material, and a laminate in which an adhesive layer with a separator was laminated on one side of a polyethylene film and an ethylene-vinyl acetate copolymer film was laminated on the other side was used as a base material. .
The air permeability of the covering material was 450 g / (m ² · day) in terms of moisture permeability by the Lissy method.
An exothermic composition molded body obtained by molding a surplus water exothermic composition through a mold using a 2.0 mm-thick mold having six through-holes with rounded corners provided at intervals. Laminated on the copolymer surface of the substrate, and then covered with the covering material so that the polyethylene porous film side covers the exothermic composition molded body, and 6 spaces with a height value of 25 and a margin value of 1.5 Having a pair of seal molds, sealing and cutting the peripheral edge of the exothermic composition molded body, the segmental heat generating part is 77 mm long × 15 mm wide, and the segmenting part is 77 mm long × 5 mm wide, A plurality of segmented heat generating elements each having six segmented heat generating portions provided at intervals with the segmented portions being spaced apart, a seal width of 8 mm, and a length of 131 mm × width of 93 mm were produced. The heating element was not cut off and was excellent in appearance.
Next, the heating element was sealed in a non-breathable outer bag and allowed to stand at room temperature for 24 hours. 24 hours later
The heating element was removed from the outer bag and the physical properties were measured. The loop stiffness of the heating element storage body was 98 mN / cm. The minimum bending resistance of the heating element, which is a bending / soft heating element, was 60 mm, and the minimum bending resistance change was zero. The total weight of the excess water exothermic composition of the heating element was 15 g.

(Comparative Example 7)
A plurality of heating elements were prepared in the same manner as in Example 11 except that the loop stiffness of the storage body was set to 1000 mN / cm.

(Comparative Example 8)
A plurality of heating elements were prepared in the same manner as in Comparative Example 7 except that the total weight of the excess water heating composition was changed to 55 g.

For the heating elements of Example 11, Comparative Example 7, and Comparative Example 8, the minimum bending resistance and use evaluation were performed. The usage evaluation method evaluated the feeling of use of the heating element by performing a monitor test with 10 panelists. The result shown in Result 2 was obtained.
Usability evaluation Good: Flexible, not stiff, smooth along the body, no resilience to return, feels soft when touched, and feels soft Soft and comfortable to use.
Defective: Inflexible, stiff, repulsive when trying to follow the body, feels firm when gripped by hand, feels hard and uncomfortable to use.

(Result 2)

Example: Exothermic composition: Loop: Minimum bending resistance: Evaluation of use
Total weight stiffness
(G) (mN / cm) (mm)
──────────────────────────────────
Example 11: 15: 98: 60: Good
Comparative Example 7: 15: 1000: Unmeasurable: Defect
Comparative Example 8: 55: 1000: 70: Defect

Thus, by comparing the heating element defined only by the minimum bending resistance that defines the flexibility and the heating element defined by the loop stiffness that defines the resilience and the flexibility,
1) A heating element using a storage body having a low loop stiffness as in Example 11 has high flexibility and low resilience and good softness to the touch. There is practical flexibility as a heating element. Further, the minimum bending resistance change was 0, and at least flexibility and softness were maintained not only before the heat generation but also after the heat generation.
2) On the other hand, the heating element defined by only the minimum bending resistance as in Comparative Example 7 and Comparative Example 8 can keep the apparent flexibility low due to the total weight of the excess water heating composition, but the storage body The resilience, alongside, and the resilience of the heating element cannot be specified, and there is a resilience to return to the original when it is placed along the body, the section is not flexible, and it is practical as a heating element Is not flexible.
3) Practical flexibility of a heating element having a plurality of section heating portions cannot be defined by the minimum bending resistance, and it is essential to define the loop stiffness.
As described above, the heating element of the present invention has practical flexibility such that there is no resilience when placed along a body to be heated, and the feeling of wearing and feel is good.

(Example 12)
Iron powder (particle size 300 μm or less) 100 parts by weight, activated carbon (particle size 300 μm or less) 5.5 parts by weight, wood powder (particle size 150 μm or less) 2.3 parts by weight, water-absorbing polymer (particle size 300 μm or less) 0 parts by weight, 0.5 parts by weight of slaked lime, 0.7 parts by weight of sodium sulfite, and 11% saline were mixed to prepare an excess water exothermic composition. An excess water exothermic composition having an excess water value of 44 was used. The surplus water value is obtained by filter paper No. manufactured by Nakamura Science Co., Ltd. 2 (circular) was used to define.
A laminate of a nylon nonwoven fabric and a polyethylene porous film was used as a coating material, and a polyethylene film having an adhesive layer with a separator was used as a substrate. The breathability of the covering material was 400 g / (m ² · day) in terms of moisture permeability by the Lissy method.
An exothermic composition molded body obtained by molding a surplus water exothermic composition through a mold using a molding die having a thickness of 1.2 mm and having six through-holes with rounded corners provided at intervals. Laminated on the polyethylene film surface of the base material, and then covered with the covering material so that the polyethylene porous film side covers the exothermic composition molded body, the excess water exothermic composition side of the seal surface of the seal portion Use a pair of seal molds that are provided with a radius adjacent to the end, have a height value of 50, a margin value of 2.0, and have six corner-shaped space portions, and the periphery of the exothermic composition molded body. The part is sealed and cut, the section heating part is 77 mm long x 12 mm wide, the sectioning part is 77 mm long x 10 mm wide, and six section heating parts are provided at intervals with the sectioning part as an interval. A heating element with a width of 8 mm, a length of 138 mm and a width of 93 mm Several were prepared. The heating element was not cut off and was excellent in appearance. Furthermore, perforated perforations were provided at each section of the heating element, sealed in an outer bag as a non-breathable container, and left at room temperature for 24 hours. After 24 hours, the heating element was taken out from the outer bag and measured for physical properties. The loop stiffness of the heating element storage body was 98 mN / cm. The minimum bending resistance before heat generation was 30 mm, the minimum bending resistance after heat generation was 30 mm, and the change in minimum bending resistance was 0. It was found to have excellent flexibility. Further, the loop stiffness of the container after the heat generation was 150 mN / cm. Further, the heating element was cut off from the perforation and divided into a plurality of small heating elements, which could be pasted and used at a desired location, which was very convenient.

(Example 13)
Iron powder (particle size 300 μm or less) 100 parts by weight, activated carbon (particle size 300 μm or less) 7.0 parts by weight, wood powder (particle size 150 μm or less) 3.0 parts by weight, water-absorbing polymer (particle size 300 μm or less) A surplus water exothermic composition having an excess water value of 45, in which 0 part by weight, 0.5 part by weight of slaked lime, 0.7 part by weight of sodium sulfite and 11% saline were mixed, was used. The excess water value is the filter paper No. 2 (circular) was used to define.
A laminate of a polyethylene porous film and a nylon non-woven fabric was used as a coating material, and a laminate of a polyethylene film provided with an adhesive layer with a separator on one side and an ethylene-vinyl acetate copolymer film on the other side was used as a base material. . The air permeability of the covering material was 450 g / (m ² · day) in terms of moisture permeability by the Lissy method.
An exothermic composition molded body obtained by molding a surplus water exothermic composition through a mold using a mold having a thickness of 2.5 mm and having six through-holes with rounded corners provided at intervals. Laminated on the polyethylene film surface of the base material, and then covered with the covering material so that the polyethylene porous film side covers the exothermic composition molded body, the excess water exothermic composition side of the seal surface of the seal portion Use a pair of seal molds that are rounded adjacent to the ends, have a height value of 20, a margin value of 1.2, and have six rounded corners, and the periphery of the exothermic composition molded body. The section heating section is 65 mm long x 13 mm wide, the section section is 65 mm long x 7 mm width, and the six section heating sections are provided at intervals with the section section as an interval. A heating element with a width of 8 mm and a length of 129 mm x width of 81 mm Pieces were made. The heating element was not cut off and was excellent in appearance.
Next, the heating element was sealed in a non-breathable outer bag and allowed to stand at room temperature for 24 hours. 24 hours later
The heating element was removed from the outer bag and the physical properties were measured. The loop stiffness of the heating element storage body was 98 mN / cm. Also, the heating element was taken out from the outer bag, fixed to clothes with an adhesive layer, and subjected to a heat test, but the heating element was bent from the section and fixed tightly along the clothes, and immediately became warm. Warm time lasted more than 6 hours. The heating element was a heating element having excellent heat generation performance and excellent flexibility.

(Example 14)
The uneven ventilation surface of the stripe heating element of the same type as in Example 13 is covered with a local ventilation material made of a polypropylene nonwoven fabric / polyethylene film having the same width as that of the segmented heat generating portion, and is orthogonal to the length direction of the segmented heat generating portion. A tunnel heating element was prepared by fixing the both ends of the stripe heating element with an adhesive. A tunnel ventilation structure is provided in which both end portions of each partition portion become local ventilation holes, the partition portion region becomes a tunnel, and the side surface of the partition heating portion forms a wide-area ventilation portion having fine holes.

  Attach a thermometer bulb to the center of the adhesive layer side of the tunnel ventilation heating element, place it on a plastic plate with a thickness of 5 mm, place four towel cloths on top of each other, and place the heating sheet on it. Then, four towel cloths were placed on top of each other, and the change in heat generation temperature was measured. The temperature of a commercially available flat-type disposable warmer with substantially the same moisture permeability on the ventilation surface rises to 70 ° C., whereas the tunnel ventilation heating element of this embodiment has a maximum temperature of 41 ° C., and The temperature was stably maintained for a long time. By providing the tunnel ventilation structure in this way, the maximum temperature of heat generation was suppressed, and the optimum temperature could be maintained for a long time without reaching 42 ° C., which is said to cause low temperature burns.

(Example 15)
Iron powder (particle size 300 μm or less) 100 parts by weight, activated carbon (particle size 300 μm or less) 5.5 parts by weight, wood powder (particle size 150 μm or less) 2.3 parts by weight, water-absorbing polymer (particle size 300 μm or less) An excessive water-containing exothermic composition having an excess water value of 20 was used, in which 5 parts by weight, 0.5 parts by weight of slaked lime, 0.7 parts by weight of sodium sulfite and 11% saline were mixed. This excess water exothermic composition had a rising temperature rise rate of 8 ° C./5 minutes. The surplus water value is obtained by filter paper No. manufactured by Nakamura Science Co., Ltd. 2 (circular) was used to define.
A laminate in which a laminate of a polypropylene nonwoven fabric and a polyethylene porous film is used as a covering material, a separator is provided on one side of the polyethylene film, an SIS adhesive layer is provided, and an ethylene-vinyl acetate copolymer film is provided on the other side. Used for non-breathable substrate. The breathability of the covering material was 300 g / (m ² · day) in terms of moisture permeability by the Lissy method.
An exothermic composition molded body obtained by molding a surplus water exothermic composition through a mold using a 1.5 mm-thick mold having six through-holes with rounded corners provided at intervals. Laminated on the polyethylene film surface of the substrate, and then covered with the covering material so that the porous film side covers the exothermic composition molded body, the end of the surplus water exothermic composition side of the sealing surface of the seal portion A rounded surface is provided adjacent to the portion, and the cross-sectional shape of the seal surface is formed in a concavo-convex shape with a pitch of 0.6 mm, and the seal surface has an oblique grid pattern on the entire surface, and at least concavo-convex toward the packaging material Using a pair of sealing molds having rounded corners of all the convex parts, having a height value of 50, a margin value of 2.0, and having six rounded corners. The periphery of the molded body is sealed and cut, and the divided heat generating portion is 82 mm long × 15 width wide. m, the section is 82 mm long × 6 mm wide, the six heat generating sections are spaced apart from each other, and a heating element having a seal width of 6 mm and a length of 132 mm × width 94 mm is provided. Several were produced. The heating element had no seal and was excellent in appearance.
Next, the heating element was sealed in a non-breathable outer bag and allowed to stand at room temperature for 24 hours. After 24 hours, the heating element was taken out from the outer bag and fixed to clothes with the SIS adhesive layer, and the heat generation test was performed. The heating element was bent from the section and fixed tightly along the clothes. It quickly became warm and the warm time lasted more than 6 hours. The heating element was a heating element having excellent heat generation performance and excellent flexibility. The heating element storage body had a loop stiffness of 95 mN / cm, and one section had a loop stiffness of 156 mN / cm. The minimum bending resistance was 60 mm, and the minimum bending resistance change was zero. The heating element was a heating element having excellent heat generation performance and excellent flexibility.

(Example 16)
Iron powder (particle size 300 μm or less) 100 parts by weight, activated carbon (particle size 300 μm or less) 7.0 parts by weight, wood powder (particle size 150 μm or less) 3.0 parts by weight, water-absorbing polymer (particle size 300 μm or less) A surplus water exothermic composition having an excess water value of 15 was used, in which 8 parts by weight, 0.5 parts by weight of slaked lime, 0.7 parts by weight of sodium sulfite and 11% saline were mixed. The surplus water value is obtained by filter paper No. manufactured by Nakamura Science Co., Ltd. 2 (circular) was used to define.
A laminate comprising a polypropylene nonwoven fabric and a polyethylene porous film as a coating material, a polypropylene nonwoven fabric on one side of the polyethylene film and an ethylene-vinyl acetate copolymer film on the other side as a non-breathable substrate used. The breathability of the covering material was 300 g / (m ² · day) in terms of moisture permeability by the Lissy method.
An exothermic composition molded body obtained by molding the excess water exothermic composition through a mold using a 1.0 mm-thick mold having six through-holes with rounded corners provided at intervals. Is then laminated on the polyethylene film surface of the substrate, and then the covering material is covered so that the porous film side covers the exothermic composition molded body, and a space portion having a height value of 55 and a margin value of 4.0 is formed. Use 6 sealing molds, heat-seal the periphery of the exothermic composition molded body, and then provide a breathable pressure-sensitive adhesive layer made of SIS-based adhesive on the breathable surface by melt-blowing method Further, the separator is covered and cut, and the section heat generating portion is 82 mm long × 18 mm wide, the section is 82 mm long × 6 mm wide, and the six section heat generating sections are the heat seal areas. Provided with a seal width of 6 mm and a length of 1 A plurality of heating elements of 50 mm × width 94 mm were prepared. The heating element was not cut off and was excellent in appearance. The heating element had a round shape at the section heating part and the corner of the heating element.
It was sealed in an outer bag and left at room temperature for 24 hours. After 24 hours, the heating element is taken out from the outer bag, cut out leaving the heating part composed of the divided heating part and the partitioning part of the heating element and the surrounding sealing area, and the storage body excluding the heating composition molded body. The loop stiffness was measured to obtain 60 mN / cm. Further, the heating element was taken out from the outer bag and fixed to the inner side of the underwear so that the air-permeable pressure-sensitive adhesive layer faced the inner side of the underwear, and a heat test was performed. Along with the body, it was fixed tightly, became warm immediately, and the warm time lasted more than 6 hours. The heating element was a heating element having excellent heat generation performance and excellent flexibility.

(Example 17)
Iron powder (particle size 300 μm or less) 100 parts by weight, activated carbon (particle size 300 μm or less) 7.0 parts by weight, wood powder (particle size 150 μm or less) 3.0 parts by weight, water-absorbing polymer (particle size 300 μm or less) An excessive water-containing exothermic composition having an excess water value of 20 was used, in which 5 parts by weight, 0.5 parts by weight of slaked lime, 0.7 parts by weight of sodium sulfite and 11% saline were mixed. The surplus water value is obtained by filter paper No. manufactured by Nakamura Science Co., Ltd. 2 (circular) was used to define.
The base material is a laminate in which a laminate of a nylon non-woven fabric and a polyethylene porous film is used as a coating material, a SIS adhesive layer with a separator is provided on one side of the polyethylene film, and an ethylene-vinyl acetate copolymer film is provided on the other side. Used for. The breathability of the covering material was 400 g / (m ² · day) in terms of moisture permeability by the Lissy method.
An exothermic composition molded body obtained by molding the excess water exothermic composition through a mold using a molding die having a thickness of 2.0 mm and having six through-holes with rounded corners provided at intervals. Is then laminated on the polyethylene film surface of the substrate, and then covered with the covering material so that the porous film side covers the exothermic composition molded body, and a space portion having a height value of 28 and a margin value of 2.5 is formed. Use 6 seal molds, heat seal the peripheral edge of the exothermic composition molded body, cut it, the section heating part is 82mm long x 15mm wide, the section is 82mm long x 6mm wide, 6 sections A plurality of heating elements having a separation width of 6 mm, a sealing width of 6 mm, a length of 132 mm and a width of 94 mm were produced with the section where the heat generation portion is a heat seal region as an interval. The heating element was not cut off and was excellent in appearance. The heating element had a round shape at the section heating part and the corner of the heating element.
The heating element was sealed in a non-breathable outer bag and allowed to stand at room temperature for 24 hours. After 24 hours, the heating element was taken out from the outer bag and measured for physical properties. The loop stiffness of the heating element storage body was 98 mN / cm. Further, the heating element was taken out from the outer bag and fixed to the waist with the adhesive layer, and the heat generation test was carried out, but it was fixed tightly along the waist and became warm immediately, and the warm time continued for 6 hours or more. The heating element had excellent heat generation performance and excellent flexibility, had a good feeling in use, and was a practical heating element.

(Comparative Example 9)
A plurality of heating elements similar to those in Example 17 were prepared except that the loop stiffness of the storage body was set to 1000 mN / cm. The heating element was taken out from the outer bag, fixed to the waist with the adhesive layer, and a heat generation test was conducted. There was no heat-generating body that had a poor usability and was not practical.

(Example 18) Iron powder (particle size 300 μm or less) 100 parts by weight, activated carbon (particle size 300 μm or less) 7.0 parts by weight, wood powder (particle size 150 μm or less) 3.0 parts by weight, water-absorbing polymer (particle size) (300 μm or less) 0.8 parts by weight, 0.5 parts by weight of slaked lime, 0.7 parts by weight of sodium sulfite, and 11% saline were mixed. The surplus water value is obtained by filter paper No. manufactured by Nakamura Science Co., Ltd. 2 (circular) was used to define.
A laminate comprising a polypropylene non-woven fabric and a polyethylene porous film as a covering material, a polypropylene non-woven fabric on one side of the polyethylene film, and an ethylene-vinyl acetate copolymer film on the other side was used as the substrate. The breathability of the covering material was 300 g / (m ² · day) in terms of moisture permeability by the Lissy method.
An exothermic composition molded body obtained by molding the excess water exothermic composition through a mold using a 1.0 mm-thick mold having six through-holes with rounded corners provided at intervals. On the polyethylene film surface of the substrate, and then the covering material is covered so that the porous film side covers the exothermic composition molded body, and the excess water exothermic composition side of the sealing surface which is a seal portion A round is provided adjacent to the end of the seal, and the cross-sectional shape of the seal surface is formed in a concavo-convex shape with a pitch of 0.7 mm. The seal surface has an oblique grid pattern on the entire surface. Using a seal mold having rounded corners on all convex portions, a height value of 50, a margin value of 3.0, and six corners with rounded corners, a heat generating composition molded body Heat-sealing the peripheral edge, and then the melt-blowing method is applied to the breathable surface. A mesh-like breathable pressure-sensitive adhesive layer made of a PSA-based adhesive is provided, and a separator is applied and cut, and the divided heat generating part is 82 mm long x 15 mm wide, and the dividing part is 82 mm long x 6 mm wide. A plurality of heating elements having a separation width of 6 mm, a sealing width of 6 mm, a length of 132 mm and a width of 94 mm were produced with the section where the heat generation portion is a heat seal region as an interval. The heating element was not cut off and was excellent in appearance. The heating element had a round shape at the section heating part and the corner of the heating element. The heating element was sealed in a non-breathable outer bag and allowed to stand at room temperature for 24 hours. After 24 hours, the heating element was taken out from the outer bag, the end of the section heating part of the heating element was cut, and the exothermic composition molded body was removed to obtain a storage body. The loop stiffness of the container was measured to obtain 60 mN / cm. Further, the heating element was taken out from the outer bag and fixed to the inner side of the underwear so that the air-permeable pressure-sensitive adhesive layer faced the inner side of the underwear, and a heat test was performed. Along with the body, it was fixed tightly, became warm immediately, and the warm time lasted more than 6 hours. The heating element was a heating element having excellent heat generation performance and excellent flexibility.

(Example 19)
Iron powder (particle size 300 μm or less) 100 parts by weight, activated carbon (particle size 300 μm or less) 7.0 parts by weight, wood powder (particle size 150 μm or less) 3.0 parts by weight, water-absorbing polymer (particle size 300 μm or less) An excess water exothermic composition having an excess water value of 15 in which 0 part by weight, 0.5 part by weight of slaked lime, 0.7 part by weight of sodium sulfite and 11% saline were mixed was used. The surplus water value is obtained by filter paper No. manufactured by Nakamura Science Co., Ltd. 2 (circular) was used to define.
Non-breathable laminate with polypropylene nonwoven fabric and polyethylene porous film, breathable coating, polypropylene nonwoven fabric on one side of polyethylene film, and ethylene-vinyl acetate copolymer film on the other side Used as a base material. The breathability of the covering material was 300 g / (m ² · day) in terms of moisture permeability by the Lissy method.
An exothermic composition molded body obtained by molding the surplus water exothermic composition through a mold using a mold having a thickness of 0.5 mm and having 10 through-holes with rounded corners provided at intervals. Is then laminated on the polyethylene film surface of the substrate, and then the covering material is covered so that the porous film side covers the exothermic composition molded body, and the excess water exothermic composition is molded through the mold. The molded product is laminated on the polyethylene film surface of the base material, covered with the covering material so that the polyethylene film surfaces overlap each other, and the end of the seal surface that is a seal portion on the side of the excess water heating composition side And a cross-sectional shape of the sealing surface is formed in an irregular shape with a pitch of 0.8 mm, and the sealing surface has an oblique grid pattern on the entire surface, and at least concave and convex toward the packaging material. , Provide corners on the corners of all convex parts, Use a pair of seal molds with a space value of 90, a margin value of 4.5, and 10 corners with rounded corners, and heat-sealing and cutting the peripheral edge of the heat-generating composition molded body. The heat generating part is 60 mm long × 10 mm wide, the section is 60 mm long × 8 mm wide, and the 10 heat generating parts are provided at intervals, and the seal width is 10 mm. A plurality of eye mask-shaped heating elements each having a length of 192 mm and a width of 80 mm were produced. A urethane foam separator was provided in the inner part of the seal-type space.
The heating element was not cut off and was excellent in appearance. Further, both ends of an ear hook made of a non-woven fabric that can be cut off at the center are attached to both ends in the longitudinal direction of the eye heating element through an adhesive, and an eye mask type eye heating element Several were produced. In the heating element, the corners of the section heating part were rounded. The heating element was sealed in a non-breathable outer bag and allowed to stand at room temperature for 24 hours. After 24 hours, the eye temperature heating element was taken out from the outer bag, the breathable surface was turned to the eyes, the eye hook was fixed to the eyes so as to cover the eyes, and a heat generation test was performed. Warm and moderate temperature lasted more than 10 minutes. The eye temperature heating element was a heating element having excellent heat generation performance and excellent flexibility. The loop stiffness of the heating element storage body was 98 mN / cm.

(Example 20)
A local area consisting of a two-layer laminate of air-through nonwoven fabric (texture) / polyethylene porous film in which three perforations of 2 mmφ are provided at equal intervals on the entire ventilation surface of the eye mask-shaped eye temperature heating element of Example 19 The ventilation member is covered so that three perforations are arranged in each section, and fixed to the peripheral part of the heating element through a fixing part made of an adhesive, and the moisture permeability is 5000 g / (m ² on the eye side. A texture material consisting of a three-layer laminate of spunbond nonwoven fabric (strength) / melt blown nonwoven fabric (breathable) / thermal bond nonwoven fabric (texture) exceeding day) was provided to produce a temperature heating element. It was enclosed in a non-breathable outer bag and left at room temperature for 24 hours. After 24 hours, the eye temperature heating element was taken out of the outer bag, and the exothermic test was carried out by fixing it to the eyes with an ear hook so as to cover the eyes with the breathable side facing outward. Warm and moderate temperature lasted for more than 10 minutes. The eye temperature heating element was a heating element having a good texture, good touch to the eyes, excellent heat generation performance and excellent flexibility. The loop stiffness of the heating element storage body was 98 mN / cm.

(Example 21)
Iron powder (particle size 300 μm or less) 100 parts by weight, activated carbon (particle size 300 μm or less) 5.5 parts by weight, wood powder (particle size 150 μm or less) 2.4 parts by weight, water-absorbing polymer (particle size 300 μm or less) 2 parts by weight, 0.5 parts by weight of slaked lime, 0.7 parts by weight of sodium sulfite and 11% saline were mixed to prepare an excess water-containing exothermic composition. The surplus water value of the surplus water-containing exothermic composition was 30. The surplus water value is obtained from filter paper No. 1 manufactured by Nakamura Science Co., Ltd. 2 (circular) was used to define.
A laminate comprising a polypropylene non-woven fabric and a polyethylene porous film as a covering material, a polypropylene non-woven fabric on one side of the polyethylene film, and an ethylene-vinyl acetate copolymer film on the other side was used as the substrate.
The breathability of the coating material was 290 g / (m ² · day) in terms of moisture permeability by the Lissy method.
An exothermic composition molded body obtained by molding the excess water exothermic composition through a mold using a molding die having a thickness of 1.2 mm and having two through-holes with rounded corners provided at intervals. On the polyethylene film surface of the substrate, and then covered with the covering material so that the porous film side covers the exothermic composition molded body, and has a height value of 42, a margin value of 2.5, Uses a sealing mold having two round-shaped spaces, heat-sealing and cutting the peripheral edge of the exothermic composition molded body, the section heating section is 30 mm long × 15 mm wide, and the section section is 30 mm long × 20 mm in width, with two divided heat generating portions as heat seal areas, with a divided portion as an interval, and a heat generating portion provided at an interval at the top of the heating element, with a seal width of 8 mm, length 130 mm × width 95 mm Nose temperature heating element which is a kind of mask-shaped face temperature heating element It was produced. Furthermore, a local ventilation material, which is a non-breathable polyethylene film, is provided on the ventilation surface via an adhesive so that air can be ventilated only from both ends of each section, and an ear hook made of a rubber string having rubber at the center. A plurality of nasal temperature heating elements were prepared at both ends in the longitudinal direction of the heating element. The heating element was not cut off and was excellent in appearance. It was enclosed in a non-breathable outer bag and left at room temperature for 24 hours. After 24 hours, the nose temperature heating element was taken out from the outer bag, and a fever test was performed with the ear heating part fixed to the face so that the upper heating part was located around the nose. Warm and comfortable warm time lasted more than 2 hours. This is particularly effective for measures to warm the nose such as hay fever. The nasal temperature heating element was a heating element having excellent heat generation performance and excellent flexibility. The loop stiffness of the heating element storage body was 98 mN / cm. A region including the segmented heat generating portion and the segmented portion as the storage body was adopted as the measurement region.

It is sectional drawing which shows an example of the surplus water exothermic composition supply apparatus of this invention. It is sectional drawing which shows an example of the relationship between the braid | blade of this invention and a fixed magnet. It is sectional drawing which shows another example of the relationship between the braid | blade and fixed magnet of this invention. It is sectional drawing which shows another example of the relationship between the braid | blade and fixed magnet of this invention. It is sectional drawing which shows another example of the relationship between the braid | blade and fixed magnet of this invention. It is sectional drawing which shows another example of the relationship between the braid | blade and fixed magnet of this invention. It is a perspective view which shows the relationship between the spring type automatic movable blade of this invention, and a formation part. It is sectional drawing which shows another example of the surplus water exothermic composition supply apparatus which has a spring type automatic movable blade of this invention. It is sectional drawing which shows an example of the heat generating body manufacturing apparatus of this invention. It is sectional drawing which shows another example of the heat generating body manufacturing apparatus of this invention. (A) It is a top view which shows an example of the rectangular heating element of this invention. (B) It is sectional drawing which follows the AA line. (A) It is a top view which shows an example of the foot temperature heat generating body of this invention. (B) It is sectional drawing which follows the BB line. (C) It is a top view which shows another example of the foot temperature heating element of this invention. (A) It is a top view which shows an example of the stripe heat generating body of this invention. (B) It is sectional drawing which follows CC. It is a top view of the filter paper which provided the reference line. It is sectional drawing of a measuring apparatus. It is sectional drawing which shows operation. It is sectional drawing which shows a measurement. It is a top view of the filter paper which calculates a surplus water value. (A)-(d) It is sectional drawing explaining moldability. (A)-(d) It is sectional drawing explaining a non-molding property. (A) It is a top view which shows an example of a shaping | molding die. (B) It is a top view which shows another example of a shaping | molding die. (A) It is a top view which shows an example of a seal type. (B) It is a top view which shows another example of a seal type | mold. It is a plane schematic diagram which shows an example which match | combined the mold hole of the shaping | molding die, and the space part of the seal mold. (A) It is a top view which shows another example of a shaping | molding die. (B) It is a top view which shows another example of a seal type | mold. (C) It is a plane schematic diagram which shows the overlap of a mold hole and a space part. (A) It is sectional drawing which shows another example of a shaping | molding die. (B) It is sectional drawing which shows another example of a shaping | molding die. It is sectional drawing which shows another example of a seal type. It is a cross-sectional schematic diagram explaining a height value. It is a cross-sectional schematic diagram which shows an example of a partial expansion of the relationship between the space part of a seal roll and the exothermic composition molded body sandwiched between packaging materials. (A) It is an explanatory top view which shows an example of the positional relationship of the mold hole of the shaping | molding die in the sealing direction of this invention, and the space part of a seal die. (B) It is an explanatory top view which shows another example of the positional relationship of the mold hole of the shaping | molding die in the sealing direction of this invention, and the space part of a seal die. It is explanatory sectional drawing which shows another example of the manufacturing method of the heat generating body of this invention. (A) It is explanatory perspective view which shows an example of the opening part for blades of the surplus water exothermic composition supply apparatus of this invention. (B) is a partial expanded sectional view which shows an example of the braid | blade vicinity of a surplus water exothermic composition supply apparatus. (C) is a partial expansion perspective view which shows an example of the braid | blade attachment part vicinity of a surplus water exothermic composition supply apparatus.

Explanation of symbols

1 Supply device (supplemental water exothermic composition supply device)
2 replenishment part (excess water exothermic composition replenishment part)
3 Smooth filling portion (excess water exothermic composition smooth filling portion)
3A Inside the blade opening or inside the blade mounting part 4 Inner wall
4A outer wall
4B Inner wall 5 at the bottom of the smooth filling section 5 Skirt
6 blade
7 Blade fixing tool
8 Side opposite the peripheral surface where the blade abuts
9 Extension of the straight line on the side opposite to the peripheral surface where the blade abuts
10 mold (peripheral surface, sheet-shaped mold surface)
10A outer peripheral surface
10B Inner peripheral surface
10C Sheet mold inner surface
10D sheet mold outer surface
11 Spring-type automatic movable blade
12 Pressing pressure adjuster
13 Spring
14 fixed magnet (external fixed magnet, external rotary fixed magnet, internal fixed magnet,
Internal rotating fixed magnet)
15 Heating element manufacturing device
16 Molding part
17 Through hole
18 Perimeter wall
19 Hollow cylindrical rotating body
20 Chain conveyor-like rotating body
21 Sheet type
22 Coating material
23 Base material
24 Core material
25 Anti-slip layer
26 External fixed magnet
27 Magnetic shielding plate
28 External endless belt
29 Support plate
30 cleaner
31 Seal roll
32 Rectangular heating element
33 Foot temperature heating element
35 Stripe heating element
36 Excess water exothermic composition
37 Exothermic composition molded body
38 Heat generation part
39 Heating section
40 division
41 Sealing part
42 Adhesive layer
43 Breathable adhesive layer
44 Separator
45 perforations
46 filter paper
47 Reference line
48 measuring plate (measuring plate with cylindrical through-hole)
49 Cylindrical through hole
50 Inner diameter of cylindrical through hole
51 Height of cylindrical through hole
52 Diameter circle of cylindrical through hole
53 Support plate
54 Filling plate
55 Presser plate
56 Non-water-absorbing plastic film (polyethylene film, etc.)
57 Penetration trace
58 Penetration distance
59 Exothermic composition
60 heating element
61 Magnet
62 Moldability measuring device
64 Mold
65 type hole (through hole, recess)
66 Seal type
67 Sealing part
68 Space
69 Adhesive Layer Coating Device 70 First Seal Roll 71 Second Seal Roll 72 Leveling Roll
73 Cut roll
74 Continuous heating element (continuous heating element)
75 Mold hole opening shape line 76 Seal mold space opening shape line 77 Mold hole opening 78 Seal mold space opening 79 Blade opening 80 Three-dimensional center point 81 Attaching Part surface 82 Contact point center point 83 Center point straight line 84 Center point tangent (center point surface extension line)


A Highest point of rotation B Lowest point of rotation C Contact position between the blade and the peripheral surface of the rotating body or contact position with the sheet-like mold surface G Rotation direction, movement direction w1, w2 Blank distance
j, k Height of seal-type space
m, mold hole height N1, N2 length from the center point of the seal mold space to the opening shape line n1, n2 length X from the mold hole center point to the opening shape line Tangent line of peripheral surface at contact position (contact portion) or surface extension line Y of sheet-shaped mold surface Normal line from peripheral surface at contact position (contact portion) or from sheet-shaped mold surface
Perpendicular θt The blade contact angle (θt), the side of the blade on the opposite side of the blade
The extension of the straight line and the tangent of the peripheral surface at the contact position or the surface extension of the sheet-like mold surface
Angle between lines

Claims (4)

An exothermic composition filled with a cylindrical through-hole having an inner diameter of 29 mm and a height of 20 mm placed on “two types” filter paper of JIS-P3801 with iron powder, carbon component, reaction accelerator and water as essential components The permeation distance of water or aqueous solution penetrating into the filter paper is divided by the height (mm) of the cylindrical through-hole which is the height of the exothermic composition proportional to the total water content at the time of measurement of the exothermic composition filled. A surplus water exothermic composition containing surplus water, which is a surplus water value of 0.5 to 80 , which is a value expressed as a percentage, and can be easily moved out of the exothermic composition system. A mold forming step of forming the excess water exothermic composition into a exothermic composition molded body by using a mold having a mold hole, and a peripheral portion of the exothermic composition molded body sandwiched between the substrate and the covering material The sealing process that seals the space with a sealing mold having a space part and a sealing part is an essential process A heating element manufacturing method of,
In the mold forming step, as a mold having a mold hole, a hollow rotating body having a molded part with a thickness of 0.1 to 10 mm on the peripheral surface is provided, and the mold hole is provided in the molded part. The hollow rotating body is connected to a hollow cylindrical rotating body having a molded part having a thickness of 0.1 to 10 mm on the peripheral surface and a sheet-shaped mold having a molded part having a thickness of 0.1 to 10 mm. It is one kind selected from a chain conveyor-like rotating body,
A plate-like body having a straight portion and a tip portion having a thickness of 0.1 to 30 mm, and a surplus water heating composition supplying device having a blade that comes into contact with a peripheral surface corresponding to a molding portion of the hollow rotating body; Corresponding to the contact portion of the molding portion with the peripheral surface of the blade, a magnet provided on the opposite side of the molding portion to the blade so as not to move along the rotation of the rotating body, and a substrate A base material supply means for supplying the hollow rotating body, a mounting device for mounting the heat generating composition molded body on the base material, and a covering material supply means;
The base material is positioned on the outer peripheral surface side that is the open port side of the through hole of the hollow rotating body having the through hole, and the through hole bottomed on the base material has a predetermined capacity and shape. On the base material being formed and transported,
The surplus water exothermic composition replenishment unit is disposed in the surplus water exothermic composition replenishment unit of the surplus water exothermic composition supply device disposed inside the hollow rotor. Is provided in the smooth filling portion which is formed continuously from the blade and a skirt made of a material having elasticity and flexibility and is in contact with the inner peripheral surface on the opening side of the through hole. The blade is provided so as to oppose the rotation direction of the hollow rotating body, and the contact angle (θt) is set to 95 ° to 170 ° to constitute a one-time smooth filling system, A magnet provided so that the blade does not move along the rotation of the hollow rotating body on the surface side opposite to the surface to which the excess water heating composition is supplied, while scraping the opening side of the through-hole. To supply from the opening side of the through hole. The covering material supplied from the covering material supply means is formed by smooth-filling the surplus water-containing exothermic composition into the forming portion once to form a heat generating composition molded body, and further laminated on the base material. Is coated on the exothermic composition molded body and the substrate, and conveyed to the sealing step,
In the sealing step, the peripheral portion of the exothermic composition molded body sandwiched between the base material and the covering material is sealed using a seal mold having the space portion and a seal portion. Heating element manufacturing method. An exothermic composition filled with a cylindrical through-hole having an inner diameter of 29 mm and a height of 20 mm placed on “two types” filter paper of JIS-P3801 with iron powder, carbon component, reaction accelerator and water as essential components The permeation distance of water or aqueous solution penetrating into the filter paper is divided by the height (mm) of the cylindrical through-hole which is the height of the exothermic composition proportional to the total water content at the time of measurement of the exothermic composition filled. A surplus water exothermic composition containing surplus water, which is a surplus water value of 0.5 to 80 , which is a value expressed as a percentage, and can be easily moved out of the exothermic composition system. A mold forming step of forming the excess water exothermic composition into a exothermic composition molded body by using a mold having a mold hole, and a peripheral portion of the exothermic composition molded body sandwiched between the substrate and the covering material The sealing process that seals the space with a sealing mold having a space part and a sealing part is an essential process A heating element manufacturing method of,
In the mold forming step, a hollow cylindrical rotating body having a molded part having a thickness of 0.1 to 10 mm on the peripheral surface is provided as a mold having a mold hole, and the mold hole is provided in the molded part. And
A surplus water heating composition supply device comprising a plate-like body having a straight portion and a tip portion having a thickness of 0.1 to 30 mm, and a blade that comes into contact with a peripheral surface corresponding to a molding portion of the hollow cylindrical rotating body And an external fixed magnet provided so as not to move along the rotation of the hollow cylindrical rotating body on the side opposite to the blade of the molding portion, corresponding to a contact portion with the peripheral surface of the blade. A base material supply means for supplying the base material to the hollow cylindrical rotating body, and a coating material supply means,
A plurality of the through holes penetrates in the radial direction of the hollow cylindrical rotating body having the through holes, and a plurality of the through holes are provided, and the through holes of the hollow cylindrical rotating body having the through holes are opened. The base material is positioned on the outer peripheral surface side, which is the mouth side, and a molded part having a predetermined capacity and shape is formed by the through hole bottomed on the base material, and the base material being transported ,
The surplus water exothermic composition is supplied to the surplus water exothermic composition replenishment unit of the surplus water exothermic composition supply device disposed inside the hollow cylindrical rotating body. In the smooth filling portion that is provided below the replenishment portion, forms a smooth filling portion from a blade and a skirt made of elastic or flexible material, and abuts the inner peripheral surface on the opening side of the through hole. The smoothing system is provided once by providing the blade provided to the opposite side of the rotation direction of the hollow cylindrical rotating body and setting the contact angle (θt) to 95 ° to 170 °. The blade is scraped off the opening side of the through-hole, and corresponds to the abutting portion of the blade, and the surface on the surface opposite to the surface to which the surplus water heating composition is supplied in the base material. Along the rotation of a hollow cylindrical rotating body The exothermic composition molded body is molded by supplying from the opening side of the through-hole by an external fixed magnet provided so as not to move, and smoothly filling the excess water exothermic composition once into the molding portion. Further, it is laminated on the base material, and further the coating material supplied from the coating material supply means is coated on the exothermic composition molded body and the base material, and conveyed to the sealing step,
In the sealing step, the peripheral portion of the exothermic composition molded body sandwiched between the base material and the covering material is sealed using a seal mold having the space portion and a seal portion. The heating element manufacturing method according to claim 1. An exothermic composition filled with a cylindrical through-hole having an inner diameter of 29 mm and a height of 20 mm placed on “two types” filter paper of JIS-P3801 with iron powder, carbon component, reaction accelerator and water as essential components The permeation distance of water or aqueous solution penetrating into the filter paper is divided by the height (mm) of the cylindrical through-hole which is the height of the exothermic composition proportional to the total water content at the time of measurement of the exothermic composition filled. A surplus water exothermic composition containing surplus water, which is a surplus water value of 0.5 to 80, which is a value expressed as a percentage, and can be easily moved out of the exothermic composition system. A mold forming step of forming the excess water exothermic composition into a exothermic composition molded body by using a mold having a mold hole, and a peripheral portion of the exothermic composition molded body sandwiched between the substrate and the covering material The sealing process that seals the space with a sealing mold having a space part and a sealing part is an essential process A heating element manufacturing method of,
In the mold forming step, a chain conveyor-like rotating body connected to a sheet-shaped mold having a molded portion having a thickness of 0.1 to 10 mm is provided as a mold having a mold hole, and the mold hole is provided in the molded portion. A plurality of sheet-shaped molds connected to a chain and driven by the chain supported inside the frame of the chain conveyor-like rotating body, and the through-hole is formed in the sheet-shaped mold. One or more plate-shaped bodies having a straight portion and a tip portion with a thickness of 0.1 to 30 mm, which are in contact with the surface corresponding to the molded portion of the chain conveyor-like rotating body. Corresponding to the contact portion between the surplus water heating composition supply device having a movable blade and the peripheral surface of the spring-type automatic movable blade, the chain on the opposite side of the spring-type automatic movable blade of the molding portion Combe An external fixed magnet provided so as not to move along with the rotation of the A-shaped rotating body, a base material supplying means for supplying the base material to the chain conveyor-shaped rotating body, and a covering material supplying means;
A chain that is supplied from the base material supply means, is supported by an endless belt, supplies the base material so as to contact the lower sheet-shaped mold of the chain conveyor-like rotating body, and connects the sheet-shaped molds with through holes. The base material is positioned on the outer surface side that is the opening side of the through hole of the conveyor-like rotating body, and a molding part having a predetermined capacity and shape is formed by the through hole bottomed on the base material. And the surplus water contained in the surplus water exothermic composition replenishment section of the surplus water exothermic composition supply device disposed inside the chain conveyor-like rotating body on the substrate being conveyed The exothermic composition is continuously provided below the replenishment unit for the excess water-containing exothermic composition so as to form a smooth filling portion from the spring-type automatic movable blade and a skirt made of an elastic or flexible material, and The inner surface side that is the opening side of the through hole The spring-type automatic movable blade provided in the smooth filling portion that is in contact is provided so as to oppose the rotational traveling direction of the hollow rotating body, and the contact angle (θt) is set to 95 ° to 170 °. Thus, the surplus water heating composition in the base material corresponds to the contact portion of the spring-type automatic movable blade while constituting a smooth filling system once and the blade scrapes off the opening side of the through-hole. Is supplied from the opening side of the through-hole by an external fixed magnet provided so as not to move along the rotation of the chain conveyor-like rotating body on the surface opposite to the surface to which Each of the sheet-like dies of the plurality of sheet-like dies formed by forming the exothermic composition molding by smooth filling once with the excess water-containing exothermic composition and then connected by driving the chain Was detached from the substrate, the heat-generating composition molded body that is molded onto the substrate by laminating, further the base material of the coating material supplied to the heat-generating composition molded article from the coating material supply means coated on, and conveyed to the sealing process,
In the sealing step, the peripheral portion of the exothermic composition molded body sandwiched between the base material and the covering material is sealed using a seal mold having the space portion and a seal portion. The heating element manufacturing method according to claim 1. A heating element manufacturing apparatus used in the heating element manufacturing method according to any one of claims 1 to 3 ,
It was selected from a hollow cylindrical rotator having a molded part with a thickness of 0.1 to 10 mm on the peripheral surface and a chain conveyor-like rotator connected with a sheet-like mold having a molded part with a thickness of 0.1 to 10 mm. it is one, a hollow rotating body having a molded portion made of the through hole of the thick 0.1~10mm the peripheral surface,
A surplus water exothermic composition supply device having a blade that comes into contact with a peripheral surface corresponding to a molding portion of a hollow rotating body, in a plate-like body having a straight portion and a tip portion having a thickness of 0.1 to 30 mm ;
Corresponding to the contact portion of the molding portion with the peripheral surface of the blade, the molding portion is provided on the opposite side of the blade from the rotating body so as not to move along with the rotation of the rotating body. A magnet, a base material supply means for supplying the base material to the hollow rotating body, a mounting device for mounting the exothermic composition molded body on the base material, and a covering material supply means;
The surplus water of the surplus water exothermic composition feed device comprising the endless belt that conveys the base material supplied from the base material supply device and presses the base material toward the smooth filling portion. Continuously provided below the exothermic composition replenishment portion, the blade and a skirt made of a flexible or flexible material form a smooth filling portion and abut against the inner peripheral surface on the opening side of the through hole By providing the blade provided in the smooth filling portion so as to oppose the rotational traveling direction of the hollow rotating body and setting the contact angle (θt) to 95 ° to 170 °, the smooth filling system once. The hollow cylindrical rotating body is provided with a plurality of through-holes penetrating in the radial direction of the hollow cylindrical rotating body, and the chain conveyor-shaped rotating body is connected to a chain. Deploy a sheet mold and Type is disposed through holes least one penetrating in the thickness direction of the sheet type,
The base material is positioned on the outer peripheral surface side that is the open port side of the through hole of the hollow rotating body having the through hole, and the through hole bottomed on the base material has a predetermined capacity and shape. On the base material being formed and transported,
The surplus water exothermic composition supplied to the surplus water exothermic composition replenishment unit of the surplus surplus water exothermic composition supply device disposed inside the hollow rotating body, and the blade of the through hole While scraping off the opening side, it does not move along the rotation of the hollow rotating body to the surface side of the base material opposite to the surface supplied with the excess water heating composition corresponding to the contact portion of the blade. A function of forming the exothermic composition molded body by smooth filling once with the excess water exothermic composition into the molded part that is supplied from the opening side of the through-hole and moved by the magnet provided as described above A heating element manufacturing apparatus characterized by comprising:

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