JP2007044100A - Manufacturing method and apparatus of heating body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a manufacturing method and apparatus of a heating body formed by continuously laminating water retaining agents on a heating composition. <P>SOLUTION: A base material sheet 17 is clampedly retained and moved by a conveying device (a conveyer) 15 and a belt-shaped impression body 18 having a laminate opening, the viscous-body heating composition fed to the laminate opening is laminated on the base material sheet 17, the belt-shaped plate body is separated from the base material sheet 17, powder-body water retaining agent is laminated on the viscous-body heating composition laminated on the base material sheet 17 to be moved by the conveying device 15, and a covering material sheet 39 is further laminated thereon to seal the outside peripheral parts of the heating composition and the water retaining agent and punched out into a prescribed shape, so that the heating composition and the water retaining agent are continuously laminated to manufacture the heating body without damaging the belt-shaped impression body 18. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

The present invention relates to a method and an apparatus for manufacturing a heating element in which a powdery water retaining agent is laminated on the upper surface of a sheet-like (film-like) heating composition.

Conventionally, a heating element in which a powdery exothermic composition is enclosed in a packaging material has been widely used as a so-called disposable type orange, but the powdery exothermic composition is unevenly distributed in the packaging material. ,
There was a non-uniform temperature distribution and a problem of heat generation in the manufacturing stage.

As an improvement measure, the inventor of the present invention has an ink-like or cream-like exothermic composition laminated and enclosed in a sheet-like packaging material, and at least a part of this packaging material has air permeability, and A heating element in which a part of the moisture of the ink-like or cream-like exothermic composition is absorbed by the sheet-like packaging material, and iron powder, a carbon component or a water-absorbing agent on the upper surface of the ink-like or cream-like exothermic composition. A heating element in which at least one selected type is laminated or dispersed has been developed to improve temperature distribution, manufacturability, and the like (for example, see Patent Document 1).

As a manufacturing device for laminating a viscous (ink-like or cream-like) exothermic composition into a film (thin plate), a cylindrical drum body whose rotation is controlled has a desired shape of holes in the circumferential direction. A pattern roll provided, a backup roll provided so as to be freely contacted and separated on the outer peripheral surface of the pattern roll, and a material extrusion nozzle provided with a discharge port for making the viscous material into a thin plate shape while directing to the hole opening side in the pattern roll, A pump for pressurizing and feeding the viscous material to the material extrusion nozzle, a first traveling means for traveling the base sheet between the pattern roll and the backup roll and the press roll, and a second traveling means for traveling on the base sheet. We have developed a laminating device for a laminated package with a press roll for laminating and coating a coated sheet and an adhesive application section for applying an adhesive to the coated sheet (for example, special References 2).

Japanese Patent No. 3344686 (Claims, Claims 4 and 6) Japanese Patent No. 3164787 (Claims, Claim 1)

However, a heating element manufacturing method and manufacturing apparatus for continuously laminating a powdery water-absorbing agent (water retaining agent) on a viscous heating (viscous) heating composition laminated in a film have not been developed yet. .
Problems to be solved in this development include firstly improving the laminating device for the exothermic composition, and secondly supplying the water-retaining agent in the form of powder to the laminated exothermic composition and laminating device for laminating It was a point to embody.

As for the first problem, when a drum, such as a cylindrical pattern roll, is used as a laminating device for a heat generating composition, a hole is provided and a drum such as a cylindrical pattern roll is used. The roll and the backup roll had a contact / separation pressing relationship.
For this reason, the pattern roll cannot be made into a perfect circle, easily deformed, or easily misaligned, a uniform contact state cannot be maintained, a gap is formed, and the doctor blade cannot be completely worn away, generating heat. If the composition remains on the pattern roll and causes equipment failure, or if the pattern roll is thin with non-smooth contact, the doctor blade may get caught and damage the pattern roll, supporting continuous and smooth production. It was necessary to improve what was easy to come.

Regarding the second problem, the heat generation rate of the exothermic composition is greatly influenced by the amount of water contained (the amount of water such as excess water and free water forming the barrier layer). It was to optimize the relationship (stacking amount and stacking position) or to set it flexibly.
Furthermore, regarding the supply and lamination of the water retaining agent, it was necessary to perform lamination with a simple device without affecting the exothermic composition.

The present invention is based on the above prior art, and in view of the problem that a heating element manufacturing method and manufacturing apparatus for continuously laminating a water retaining agent on a heat generating composition have not yet been developed, a conveying device (conveying conveyor) and a laminating opening The belt-like plate body provided with a belt is sandwiched and held, moved, and the viscous heat-generating composition supplied to the laminating opening is laminated on the substrate sheet, and the belt-like plate body is formed into the substrate. A powdery water-retaining agent is laminated on a viscous heat-generating composition laminated on a base sheet that is separated from the sheet and moved by a conveying device, and further a covering material sheet is laminated, and the heat-generating composition and water-retaining material are laminated. By sealing the outer periphery of the agent and punching it into a predetermined shape, the belt-shaped plate is not damaged, and the heating composition and the water retention agent are continuously laminated to produce the heating element. Solve the problem.

In short, the present invention is such that the base sheet is sandwiched and moved by the conveying device (conveying conveyor) and the belt-shaped plate body provided with the laminated openings, so the plate body provided with the laminated openings is belt-shaped. As a result, the plate body and the first material supply device are maintained in a uniform contact state by horizontal plane contact movement, and are not caught locally or stressed, and the endless belt is deformable. Maintains the normal form of the body without deformation, damage, equipment failure, maintenance is easy and can be manufactured continuously over a long period of time, and the conveyor, plate and base sheet move simultaneously. The exothermic composition can be laminated on the base sheet without causing any positional deviation due to wrinkles or stretching even when the packaging material is stretchable.
Also, since the viscous heating composition supplied to the lamination opening is laminated on the base sheet, the heating composition having the same shape as the lamination opening is laminated on the base sheet that moves simultaneously with the plate. In addition, since the belt-shaped printing plate is detached from the base material sheet, it is possible to prevent the water retaining agent from adhering to the printing plate and to release the printing material from the exothermic composition on the base material sheet. In this way, the base material sheet having the same shape as the lamination opening is laminated on the base material sheet, and the base material sheet released from the nipping and holding state is transported to the water retention agent laminating process of the next process by the transport conveyor. I can do it.
In addition, since the powdery water retaining agent is laminated on the viscous heat generating composition laminated on the base sheet moved by the conveying device, the water retaining agent is laminated after the plate is detached. Regardless of the laminated shape of the exothermic composition, the water retention agent can be laminated in a free shape, and further, the covering material sheet is laminated, and the outer peripheral portion of the exothermic composition and the water retention agent is sealed, and the predetermined shape is obtained. Since punching is performed, a heating element having a predetermined shape in which a film-like exothermic composition and a water retaining agent are sandwiched by a packaging material can be continuously produced.

The conveying device is composed of an upstream inclined conveying path and a downstream horizontal conveying path, and a belt-shaped plate body is formed as an inclined conveying path, and the base sheet is formed by the inclined conveying path and the belt-shaped plate body of the conveying device. Since it moves while being held in an inclined state, the supply position of the exothermic composition having a high viscosity and a high specific gravity can be lowered, and the load on the pump for pumping the exothermic composition can be reduced.
Since the conveying device is changed from the inclined conveying path to the horizontal conveying path so that the belt-shaped plate is detached from the base sheet, the plate can be easily detached by changing the angle at the intermediate portion of the conveying path. Since the base sheet on which the exothermic composition is laminated is moved in the horizontal conveyance path of the conveyance device, it is possible to prevent the laminated exothermic composition from being deformed by horizontal conveyance after the plate is removed. It is possible to stabilize the laminating and moving state of the powder water retention agent.

Since the water-retaining agent is dropped and laminated from the proximity position in a non-contact manner on the exothermic composition laminated on the base sheet, it is possible to prevent the exothermic composition laminated when the water-retaining agent is supplied. I can do it.

Weigh the water retention agent with the metering supply unit provided in the water retention agent supply device and set the fall time to correspond to the lamination form relationship between the exothermic composition and the water retention agent, and also stack the water retention agent on the exothermic composition and the base sheet Since the water-retaining agent having a substantially constant thickness is dropped in the region, it is possible to easily set various layered form relationships between the exothermic composition and the water-retaining agent.

Since the heat generating composition has a laminated form that is adjacent, independent, and has a non-laminated area between them, the non-laminated area in the manufactured heating element is thin and can be easily bent. Thus, the flexibility of the heat generating element can be remarkably improved, and the endless belt can be improved in durability without concentrating the hole in the endless belt in a large area.

In addition, since the water retention agent is laminated on the base material sheet in the non-lamination region between the exothermic composition and the exothermic composition, the water retention agent is dispersed and arranged in addition to the upper surface of the exothermic composition. The heating element can be further thinned to improve flexibility, and a water retention agent is disposed between the exothermic compositions.
The spacing between the exothermic compositions is maintained, and the temperature distribution can be made uniform and flexible.
In addition, since the water retention agent is laminated on the base sheet in the outer peripheral portion of the divided heat generation composition, the heating element can be further thinned by the dispersed arrangement of the water retention agent.
In addition, since the water retention agent is laminated in a smaller area than the divided heat generation composition, the heat generation composition and the water retention agent have the same area or the same ratio area, etc., and free moisture is present at any position of the heat generation composition. The amount is uniform, exothermic reaction such as exothermic rate and calorific value can be smoothed, or the water retention agent is laminated only on the upper surface of the exothermic composition, so there is no water retention agent in the seal area, and the seal is ensured It is possible to increase the heat generation area and the heat generation amount by enlarging the heat generation composition to the immediate vicinity of the seal region.

Bend the belt by supporting the belt of the transport device with a support roll that can rotate freely in the upstream and downstream intermediate parts,
Since the upstream portion is formed as an inclined conveyance path and the downstream portion is formed as a horizontal conveyance path, the angle of the conveyance path can be easily changed with a simple configuration such as a support roll.

Since the support roll is provided with magnetic attraction means, the exothermic composition containing the magnetic material (iron powder) is attracted by the magnetic force to improve the adhesion to the base sheet, and the exothermic composition also changes the angle of the conveyance path Can be sucked into the base sheet to prevent the deformation of the mold.

Since the support roll is provided with a magnet inside a rotatable hollow cylindrical body, the hollow cylindrical body supporting the belt and the magnet are separate from each other and can be easily manufactured and maintained.
Also, the magnet of the magnetic attraction means is a multipolar magnet with a plurality of rectangular magnetic poles arranged on the upper surface, so that the magnetic force can be strengthened to improve the attractive force, and the longitudinal direction of the rectangular magnetic poles can be conveyed Since the N pole and the S pole are alternately arranged in the direction perpendicular to the transport direction, the magnetic force does not change in the transport direction and can be stably attracted.
Further, since the rectangular non-magnetic pole area is provided between the magnetic poles, the magnetic force can be further strengthened.

Since the first material supply device is provided with the discharge port in the nozzle passage provided in the upstream and downstream direction of the supply nozzle, and the discharge port is slidably contacted with the plate body having the laminated opening and continuously conveyed with the base sheet,
When the viscous composition pumped from the pump is supplied to the base sheet through the laminate opening of the plate without contact with outside air, the viscous composition is not exposed to the air, and changes in performance and physical properties due to moisture evaporation and air contact Can be continuously supplied.
Further, the rear wall body of the supply nozzle is formed as an inclined wall having a high nozzle passage side, the downstream end of the inclined wall is formed as a sliding portion that is in sliding contact with the plate body, and the inclined wall is formed as a pressing wall. The lower part forms a discharge pool, and the discharge pool is connected to the main discharge path directly below the nozzle passage to form a discharge port. It is possible to tightly fill the laminating opening with the viscous composition of the discharge pool whose internal pressure has been increased by the pressing wall, and to prevent the collapse of the filled laminate during the manufacturing process after lamination, and further due to the scraping portion at the downstream end Residual adhesion to the printing plate can be prevented by scraping, and a desired amount can be metered and filled.

Since a large-volume upstream reservoir is installed in the middle of the nozzle passage, a viscous fluid composition with low fluidity can be quickly stored in the outlet by applying pressure to the upstream reservoir close to the outlet and storing it. And can be stably and continuously discharged and supplied to the opening of the plate.

The second material supply device communicates a supply port and a drop port with a cylindrical measurement space provided in a supply base, and a measurement roll is rotatably provided in the measurement space, and a measurement recess is provided on a peripheral surface of the measurement roll. Therefore, it is possible to supply an appropriate amount of powdery water retaining agent to an appropriate position with a simple device.

Since the measuring recess is composed of a plurality of measuring grooves separated by a partition wall, there is no bias, and the practical effect such as being able to stack the water retention agent at a substantially constant thickness is significant.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
First, as shown in FIGS. 1 and 2, the manufactured heating element 1 has a viscous shape (viscous) in the heating area 4 excluding the sealing area 3 having a predetermined peripheral width on the upper surface of the base material (one packaging material) 2. Heat treatment composition 5 of the tempering) and a powdery water retaining agent 6 on the heat generating composition 5 and the like, and the base material 2 and the water retaining agent 6 are coated with the covering material (the other packaging material) 7. And the base material 2 in the sealing region 3 around the heating element 1
Also, the covering material 7 (upper and lower packaging materials) is sealed (adhesion, thermal bonding, thermal fusion).
And at least one of the base material 2 or the covering material 7 has air permeability and enables air circulation when the heating element 1 is used, and the entire heating element 1 is hermetically sealed so as not to generate heat at the distribution stage.
It is packaged in a non-breathable exterior material (not shown).

As a material constituting the heating element 1, for example, the heating composition 5 (viscosity composition M at the time of manufacture) is mainly composed of magnetic materials such as iron powder, water, salts, activated carbon, and a thickener. Other materials are blended and mixed, and inks or creams having a viscosity of about 1 to 7500 Pa · s at 20 ° C. can be mentioned.
Moreover, as the water retaining agent 6, a polymer material (smoothly and abundantly absorbing a large amount of water or salt aqueous solution)
Water-absorbing polymer).

The exothermic composition 5 and the water retention agent 6 laminated on the base material 2 are formed into a sheet having a wide area over the entire exothermic region 4 as shown in FIG. (A), (b), as shown in FIGS. 3, 4, 5, a group may be formed of a large number of laminates having a small area.
The heat generating composition 5 may be stacked in a large number of stacked regions 9, 9 a, which are independent and provided with non-stacked regions 8, 8 a.
The water retaining agent 6 is laminated on the entire surface or a part of the exothermic composition 5, or the non-laminated areas 8, 8 a... Between the laminated areas 9, 9 a, and the laminated areas 9, 9 a. As shown in FIG. 5, the water retaining agent 6 may be laminated only on the exothermic composition 5 in a non-laminated manner, as shown in FIG. A non-laminated area 10 of the water retaining agent 6 is partly surrounded on the exothermic composition 5;
It may be formed as 10a.

Here, when the lamination | stacking form relationship of the heat-generating composition 5 and the water retention agent 6 is demonstrated collectively,
Both the exothermic composition 5 and the water retention agent 6 are formed in a planar laminated form along the entire exothermic region 4, the exothermic composition 5 and the water retention agent 6 are both formed in a divided laminated form, or the exothermic composition 5 There are basically three types of exothermic composition 5 and water retention agent 6 so that the water retention agent 6 is formed into a planar lamination configuration and the water retention agent 6 into a planar lamination configuration.
And when both are a planar lamination | stacking form or a division | segmentation lamination | stacking form, the exothermic composition 5 and the water retention agent 6 are made into the same area (for example, in the case of FIG.2 (c) and FIG.5 (a)), or a water retention agent. 6 is reduced in size compared to the exothermic composition 5 (for example, in the case of FIG. 5B), and when the exothermic composition 5 is in a divided laminated form and the water retaining agent 6 is in a planar laminated form, it is adjacent. Exothermic composition 5 (several units or a whole number of units)
The water retention agent 6 is laminated on the non-laminating regions 8, 8a between the layers (for example, in the case of FIG. 2 (b) and FIG. 4), and in addition to this lamination form, the water retaining agent is also retained in the outer peripheral portion of the exothermic composition 5. The agent 6 is laminated (for example, FIG.
a) and the case of FIG. 3) and the like, and the layered form relationship between the heat generating composition 5 and the water retention agent 6 is appropriately selected depending on the application and type of the heating element 1.

Next, an apparatus for manufacturing the heating element 1 will be described.
As shown in FIG. 6, three support rolls 11, 11 a, 11 b are rotatably provided at a triangular position in which the upstream portion (right side in the drawing) is downward and the intermediate portion and the downstream portion have the same height, An endless belt 12 is wound around the support rolls 11, 11a, 11b, and supported by an intermediate support roll 11a to change the conveyance angle of linear conveyance. A transfer conveyor (transfer device) 15 including a horizontal transfer path 14 is provided.
A base material sheet 17 (corresponding to the base material 2 of the heating element 1 after manufacture) is fed from the sheet roll 16 and supported by the supply roll 16a at the upper end of the starting end of the transport conveyor 15 (inclined transport path 13) driven in circulation. And a plate 18 that moves while holding the substrate sheet 17 on the inclined conveyance path 13 of the conveyance conveyor 15 is provided.

The plate 18 is formed by winding an endless belt 20 around a pair of support rolls 19, 19 a provided so that the upstream part is downward and the downstream part is freely rotatable. The upstream support roll 19 is an upstream part of the transport conveyor 15. The support roll 19a in the downstream portion is substantially opposite to the position of the support roll 11 and the transporting conveyor 15
It is arrange | positioned in the downstream and upper side rather than the support roll 11b of the downstream part.
The oval endless belt 20 has the same inclination angle and parallel to the inclined conveying path 13 of the conveyor 15, and the upstream portion of the inclined conveying path 21 of the plate 18 to be circulated is the inclined conveying path of the conveying conveyor 15. 13, the substrate sheet 17 is sandwiched and conveyed, and the downstream portion of the horizontal conveyance path 14 and the inclined conveyance path 21 of the printing plate 18 are separated from each other, with the conveyance conveyor 15 changing the angle by the support roll 11a.
Further, as shown in FIG. 7, the endless belt 20 of the plate 18 to be circulated is adjacent, independent, and non-opening portions 22, 22a... (Non-laminated region 8 in the heating element 1). , Equivalent to 8a ...)
Are provided with a plurality of divided laminated openings 23a, 23b (corresponding to the laminated regions 9, 9a in the heating element 1).

The divided laminated openings 23a, 23b,... Of the laminated opening 23 provided in the endless belt 20 of the plate 18 are:
The heating element 1 corresponds to a stack formed of a large number of small-area laminates in the heating element 1, and the lamination opening 23 is determined according to the form of the lamination of the heating region 4 of the heating element 1. The shape and the like of the divided laminated openings 23a, 23b.

Then, as shown in FIG. 6, the base sheet 17 is heated by the inclined linear transport path that sandwiches and moves the base sheet 17 by the inclined transport path 13 of the transport conveyor 15 and the inclined transport path 21 of the plate 18. A horizontal linear conveying path for setting a first laminating position 24 in a laminating line for laminating the objects 5 and horizontally conveying the substrate sheet 17 on the horizontal conveying path 14 of the conveying conveyor 15 on the downstream side of the first laminating position 24. In addition,
A second laminating position 25 in the laminating line for laminating the water retention agent 6 on the exothermic composition 5 or the like is set.
In the first stacking position 24, a first material supply device 26 for supplying a viscous material composition M (heat generating composition 5) is provided on the upper portion of the plate 18, and at the same position as the first material supply device 26. Further, a backup roll (backup body) 27 is provided for supporting the conveyor 15 for sandwiching and holding the substrate sheet 17 with the plate body 18 from below.
Although the detailed configuration will be described later, the first material supply device 26 is connected to a connection port 29 of the supply nozzle 28 with a supply pipe 31 for pumping the viscous composition M with a pump 30 and to a discharge port 32 of the supply nozzle 28.
Is opposed (directed) to the stacking opening 23 (divided stacking openings 23a, 23b,...) Of the plate body 18 and the discharge port 32 is disposed in sliding contact with the endless belt 20 of the plate body 18.
Note that the support roll 11a for changing the transport angle by the backup roll 27 and the transport conveyor 15 facing the first material supply device 26 has a magnetic force.

Moreover, the base material sheet which laminated the viscous composition M in the 2nd lamination position 25 in a lamination line.
A second material supply device 33 for supplying the powdery water retaining agent 6 is provided on the upper portion of 17, and at the same position as the second material supply device 33, a backup plate for supporting the conveyor 15 from below (
Backup body) 34 is provided.
The second material supply device 33 has a hopper 35 in the upper part, a metering supply part 36 in the middle part, and a drop opening 37 in the lower part. The drop opening 37 is directed to the first plate 18, and the viscous composition M Then, the water retaining agent 6 is dropped and laminated on the substrate sheet 17 or the like.

The endless belt 20 of the plate 18 is made of a metal plate such as a thin stainless steel plate having a thickness of 0.3 mm or 0.4 mm, a resin material having a thickness of 0.5 to 2.0 mm, or a flexible material such as rubber. Although it comprises a raw material sheet or a laminated plate obtained by bonding them together, the material, composition, etc. are appropriately selected in consideration of the thickness of the exothermic composition 5 and the like.
Further, the amount of the exothermic composition 5 to be laminated is determined by the thickness of the endless belt 20 of the plate 18 and the opening area of the lamination openings 23 (divided lamination openings 23a, 23b...). Since the amount of lamination of the water retention agent 6 is determined by the setting, the thickness and shape of the plate 18 depending on the use of the heating element 1, or
A specific configuration of the second material supply device 33 is set.

Subsequent to each laminating step of the viscous composition M and the water retention agent 6 on the base material sheet 17, a laminating step of the covering material 7 and the like are provided.
In the vicinity of the end of the conveyor 15, the heating material 5 (viscous composition M) and the water retention agent 6 are laminated on the upper part of the base material sheet 17, fed from the sheet roll 38 and supported by the supply roll 38 a, and the covering material sheet 39 (the covering material 7 of the heating element 1 after manufacture) is supplied, and an adhesive such as hot melt or cold glue is sprayed on the joint surface of the base material sheet 17 including the covering material sheet 39 or the water retention agent 6. An adhesive application means 40 is provided for applying the adhesive.
A pair of upper and lower heat rolls for bonding the seal region 3 on the outer periphery of the heat generating region 4 so as to conform to the outer shape of the heat generating region 1 in the middle of conveyance after joining the base material sheet 17 and the covering material sheet 39, etc. And a cutting means 42 composed of a pair of upper and lower cutter rolls for cutting the seal region 3 with a desired width and cutting it into a desired outer shape.

In each step after the layering step of the covering material 7, illustration of a conveying device for the base material sheet 17 on which the heat generating composition 5 and the water retaining agent 6 are stacked and the heating element sheet 43 on which the covering material sheet 39 is stacked is omitted. In addition, it is preferable that the conveying device has a magnetic force and is sucked and supported from below.
Also provided in the laminating step of the covering material 7, etc., with a plate 18 that has a laminating opening 23 that is circulated and driven, a conveyor 15 that is sandwiched and held between the base material sheet 17 and the circulatory drive The transfer device (not shown) is moved at the same speed.
Further, when a hot melt adhesive is applied to the seal region 3 and the heat generation region 4, the water retaining agent 6 and the covering material sheet 39 are bonded and positioned and fixed, and when heat-bonded in the seal region 3,
Heat sealing can be performed at a lower temperature than heat fusion, and since the heat adhesion is fast, the line speed can be increased, and heat fusion may be performed without using an adhesive.

Next, the first viscous material composition M is discharged and supplied to the laminated openings 23, 23a,.
The material supply device 26 will be described.
As shown in FIG. 8, the supply nozzle 28 of the first material supply device 26 has a nozzle passage 44 in the central upstream and downstream direction.
Of a supply pipe 31 having a large volume upstream reservoir 45 interposed in the middle of the nozzle passage 44, connected to the upstream side connection port 29 of the nozzle passage 44, and connected to the pump 30 at the base end side. A discharge port 32 facing the printing plate 18 is provided at the lower end of the supply nozzle 28 that is connected to the front end side and downstream of the nozzle passage 44.
The supply nozzle 28 provided with the nozzle passage 44 in the upstream and downstream directions includes a front wall body 46, a rear wall body 48, and two side wall bodies (not shown), and the discharge port 32 at the lower end of the supply nozzle 28 is a plate. The nozzle passage 44 of the supply nozzle 28 in sliding contact with the body 18 is in an outside air blocking state.

The front wall 47 of the front wall body 46 is inclined with the lower end slidably contacting the plate body 18 retracted to the downstream side, so that the slidable contact state between the front wall body 46 and the plate body 18 becomes smooth. Prevents catching.
In addition, the bottom wall 49 of the rear wall 48 is inclined so that the rear end (downstream end) is in sliding contact with the plate 18, and the front end (upstream end) on the nozzle passage 44 side is inclined upward. Wall 50 and the inclined wall 50
Is formed with a scraping portion 51 for scraping and measuring surplus viscous composition M on the plate 18 and scraping and weighing it.
The lower portion of the inclined wall 50 forms a discharge reservoir 52, the inclined wall 50 forms a pressing wall for the viscous composition M in the discharge reservoir 52, and a main discharge passage 53 directly below the discharge reservoir 52 and the nozzle passage 44 is formed. The communicating integral flow space forms a discharge port 32 so that the viscous composition M in the nozzle passage 44 flows into the main discharge passage 53 and the discharge reservoir 52.
In addition, the inclination angle of the inclined wall 50 which becomes the pressing wall of the viscous composition M is the viscosity of the viscous composition M, the pump
The pressure applied by 30, the pumping amount, the opening amount of the laminated openings 23, 23a of the plate 18, the conveying speed of the plate 18, etc. are appropriately set, but the viscous composition M is applied to the laminated openings 23, 23a of the plate 18. In addition, the inclination angle of the inclined wall 50 is not limited as long as it can be cut off, but it is, for example, 5 to 60 degrees, preferably 15 to 45 degrees.
Although not shown, the inclined wall 50 may have a two-step inclination by changing the inclination angle in the middle.
Alternatively, it may be curved as long as it is entirely inclined.

Next, the manufacturing method of the heat generating body concerning this invention is demonstrated.
As shown in FIG. 6, the substrate sheet 17 fed from the sheet roll 16 is held between the conveying conveyor 15 and the plate 18 that are driven to circulate, and moves to the lamination process, and the substrate sheet 17 is straight in an inclined state. At the first laminating position 24 to be conveyed, the viscous heat-generating composition 5 extruded from the discharge port 32 of the first material supply device 26 is slidably brought into contact with the discharge port 32 and the endless belt 20 in a predetermined amount. And is filled in the laminated openings 23 (divided laminated openings 23a, 23b.
Is laminated on the upper surface of the substrate.

Subsequently, the conveying conveyor 15 changes from the inclined conveying path 13 to the horizontal conveying path 14, and the plate body 18 is maintained in an inclined state, so that the stacking opening 23 ( The divided laminated openings 23a, 23b ...) are gradually released, and the plate 18 is detached from the base sheet 17,
At the second stacking position 25 where the base sheet 17 is linearly conveyed in a horizontal state, the powdery water retention agent 6 dropped from the drop port 37 of the second material supply device 33 is the exothermic composition 5 or base sheet. Laminated on top of 17 etc.

When the laminating process is completed, the base material sheet 17 on which the exothermic composition 5 and the water retention agent 6 are laminated is conveyed to the covering material laminating process by a conveying device (not shown), and the covering material sheet 39 fed out from the sheet roll 38 is joined. Adhesive is spray-applied by the adhesive application means 40 to the joint surface of the base sheet 17 on which the surface or the heat generating composition 5 and the water retention agent 6 are laminated.
The support roll 11b and the supply roll 38a are in a surface-bonded state, and are temporarily bonded depending on the type of adhesive.
The heating element sheet 43 in which the exothermic composition 5 and the water retaining agent 6 are conveyed in a sandwich between the two packaging sheets (base sheet 17 and covering sheet 39) is sealed by the sealing means 41. And the sealing region 3 in the covering sheet 39 are thermally bonded or the like, and the heating element 1 is manufactured by being punched and cut into a desired outer shape (for the sole, for the eyes, for a rectangular shape) by the cutting means 42, Although not shown, it is packaged in a non-breathable (airtight) exterior material.

Next, the detailed operation of the first material supply device 26 that fills the stack opening 23 (divided stack openings 23a, 23b...) Of the plate 18 with the exothermic composition 5 and stacks it on the base sheet 17 will be described.
As shown in FIGS. 8 to 10, stacked openings 23 and 23 a of the plate 18 that is linearly conveyed by the conveyor 15.
When reaching the supply nozzle 28, the viscous composition M in the supply nozzle 28, which has been pressurized by the pump 30, is discharged from the discharge port 32 into the stacked openings 23, 23a of the plate 18 and filled, and the base sheet Laminate on 17.
The inclined wall 50 of the rear wall 48 that moves relative to the printing plate 18 is upstream of the viscous composition M of the discharge pool 52 at the upper part of the printing plate 18 (lamination openings 23, 23a, ... and non-openings 22, 22a, ...). The viscous composition M in the discharge pool 52 is rolled, and an internal pressure is generated on the upstream side (main discharge passage 53 side) and the lower side (plate body 18 side), and the laminated openings 23, 23a,. Push the viscose composition M into an inclined wall
The scraping portion 51 at the downstream end of the 50 scrapes off the excess viscous material composition M from the upper surface of the plate 18,
The viscous composition M on the upper part of the filling W filled in 23a.

Further, since the continuously conveyed plate body 18 is intermittently provided with the laminated openings 23, 23a, the discharge state of the viscous composition M discharged from the supply nozzle 28 changes, that is, the plate body. A state in which the viscous composition M is discharged to the laminated openings 23, 23a ... provided in 18 to laminate the viscous composition M on the base sheet 17 (see FIGS. 9 and 10), and the non-opening portion 22 of the plate 18, The state in which the discharge port 32 is closed with the filling W of the laminated openings 23, 23a,... (See FIG. 8) is repeated.
Note that the discharge state and the closed state of the viscous composition M in the supply nozzle 28 differ depending on the length of the discharge port 32 of the supply nozzle 28 in the direction of travel and the length of the stack opening 23, 23a,. In the case where the openings 23, 23a,... Have a large area on one side, as shown in FIG. 11, the discharge state in which the discharge ports 32 are entirely located above the laminated openings 23, 23a, and the non-opening are not shown. The closed state at the portions 22, 22a, and the state where a part of the discharge port 32 faces the laminated openings 23, 23a, ... continue intermittently.
When the laminated openings 23, 23a are divided laminated openings 23, 23a, as shown in FIGS. 8 to 10, the discharge ports 32 are provided in both areas of the divided laminated openings 23, 23a, and non-opening portions 22, 22a. Becomes a discharge state and a closed state.

As shown in FIG. 8, in the state in which the viscous composition M (filler W) is completely filled in the immediately preceding laminated opening 23z (part of the scraping is incomplete), the main discharge path 53 and the discharge pool 52 of the discharge port 32 are formed. Non-opening 22,
When the discharge port 32 located in the upper part of the filling W is in a closed state, the pump 30
In this way, the viscous composition M is pumped to the connection port 29 of the supply nozzle 28 via the supply pipe 31, so that the upstream reservoir 45 in the supply nozzle 28, the nozzle passage 44, the main discharge passage 53 directly below the nozzle passage 44, and The discharge port 32 composed of the discharge pool 52 is in a state of applying pressure (increasing internal pressure).
As shown in FIG. 9, in the next discharge start state to the stacking opening 23, the viscous composition M applied with pressure from the upstream side is discharged from the main discharge path 53 of the discharge port 32 to the stacking opening 23, and the discharge port The pressure applied to the main discharge path 53 in 32 decreases, and the discharge continues according to the continuous conveyance of the plate 18, whereby the discharge port from the nozzle passage 44 and the upstream pool 45 passes through the main discharge path 53 as shown in FIG. The viscous composition M is pumped to 32, the internal pressure of the discharge port 32 is reduced, but the full state is maintained, and the laminated composition M is filled into the laminated opening 23 of the plate 18.
When the filling of the viscous composition M into the laminated opening 23 is completed and the discharge port 32 is closed, the nozzle passage 44 and the upstream of the supply nozzle 28 are continuously pumped by the continuous delivery of the viscous composition M from the pump 30. The pressure applied to the reservoir 45 and the discharge port 32 and the internal pressure increase (see FIG. 8), and these discharges and fillings (including tight uniform filling described later), internal pressure reduction, closing (discharging stop), internal pressure increase, etc. are repeated.
In addition, while showing the viscous body composition M, the filling W, etc. in a drawing with many dots, the pressure application state and the internal pressure rise state are also displayed according to the density of the dot.

Next, in the entire discharge state, the filling state will be described in detail, including the action (tight, uniform filling) of the discharge reservoir 52 provided in the discharge port 32.
First, as a basic action of the discharge pool 52 formed by the inclined wall 50 of the rear wall body 48, the plate body 18 moves with respect to the supply nozzle 28, whereby the viscous composition M of the discharge pool 52 is transferred to the plate body. Contact with the filling W of the 18 laminated openings 23, 23a, or contact with the upper surface of the non-opening portions 22, 22a, or on the non-opening portions 22, 22a, etc. The mucus composition M is scraped off and scraped, and further, the volume of the discharge reservoir 52 is reduced on the downstream side, so that the viscous composition M of the discharge reservoir 52 is pressed upstream by the inclined wall 50. As it rolls, the internal pressure rises.
In the closed state of the discharge port 32, the internal pressure in the discharge pool 52 rises even with the viscous composition M that is pumped by the pump 30 and flows from the nozzle passage 44. In addition to the pressure on the upstream side, pressure and stress in the direction of the plate 18 (downward) are generated.

Next, the filling state including the basic operation of the discharge reservoir 52 will be described sequentially from the beginning of filling.
As shown in FIG. 9, when the front end (downstream end) 60 of the stacked opening 23 starts to face the front end (upstream end) 59 of the discharge port 32, the stacked opening 23 starts from the main discharge path 53 directly below the nozzle passage 44. The viscous composition M is discharged and supplied, and as shown in FIG. 10, after the rear end (upstream end) 61 of the laminated opening 23 passes the front end 59 of the discharge opening 32, the viscous composition is formed as an initial filling W1 in the laminated opening 23. Object M is generally filled.
From this state, the pressure in the nozzle passage 44 and the like is increased by pumping the viscous composition M by the pump 30, and the viscous composition M in the discharge reservoir 52 is rolled, the internal pressure is increased, and the downward pressing force is applied to the initial filling W1. Thus, the viscous composition M is further supplied, and the laminated opening 23 is filled with a tight and uniform late filling W2.
In other words, the viscous composition M in the discharge reservoir 52, which has been pressurized before filling the stacked openings 23, 23a, and increased in internal pressure, is discharged when the initial filling W1 is insufficiently filled into the stacked openings 23, 23a,. Filling is continued due to the pressing force or internal pressure increase due to the viscous composition M, and the latter-stage filling W2 of a predetermined amount and a predetermined density is filled.
Then, in the scraping portion 51 at the downstream end of the inclined wall 50, the late filling W2 is scraped off, and a predetermined amount is metered and filled, and the sticky composition M on the non-opening portions 22, 22a. The excess viscous composition M is retained in the discharge reservoir 52 without causing the viscous composition M to remain on the upper surface of the belt.

As shown in FIG. 10, when the laminated openings 23, 23 a are divided laminated openings 23, 23 a... And the traveling direction length is shorter than the traveling direction length of the discharge port 32, the laminated openings 23, 23 a. Immediately after the rear end 61 passes the front end 59 of the nozzle passage 44, the pressure in the discharge port 32 rises, and the close filling action by the discharge reservoir 52 is enhanced.
As shown in FIG. 11, even when the traveling direction length of the laminated openings 23, 23a is longer than the traveling direction length of the discharge port 32, the filling action by the discharge reservoir 52 occurs, and the stacked openings 23, 23a,. Equalize the filling amount.

Further, in the upstream reservoir 45 provided in the middle of the nozzle passage 44, as shown in FIG.
When 32 is in a closed state, the pressure is applied by the pump 30 and the internal pressure is increased.
, The viscous composition M flows from the large-capacity upstream reservoir 45 to the nozzle passage 44 as shown in FIGS. The pressure drop in the outlet 32 and the like is reduced, and the nozzle passage 44 is almost full.
By the action of the upstream reservoir 45, the viscous composition M is discharged from the discharge port 32 to the laminated openings 23, 23 a of the plate 18, and the pressure drop in the discharge reservoir 52 is reduced so that the tightness by the discharge reservoir 52 is increased.
The uniform filling action is promoted.

Next, a specific configuration of the backup roll 27 provided on the lower side of the first material supply device 26 and the support roll 11a that supports the endless belt 12 by changing the angle at the upstream and downstream intermediate portions of the conveyor 15 will be described. The present invention may be applied to the backup plate 34 provided on the lower side of the second material supply device 33. Hereinafter, these will be described as the support roll 11a and the like.
As shown in FIG. 12, the support roll 11a and the like have a hollow cylindrical body 63 rotatably attached to a fixed shaft 62, and are in close proximity to the inside of the hollow cylindrical body 63 without contact with the inner surface of the hollow cylindrical body 63. The curved plate-like magnet 64 is non-rotating and arranged in a fixed position (facing the conveyor conveyor 15 opposite to the inclined and horizontal angle changing positions or facing the first and second material supply devices 26 and 33). Only the hollow cylinder 63 is free to rotate.
In the illustrated example, a pair of left and right ring-shaped side plates 66 are attached to the fixed shaft 62 via bearings 65 and 65a.
66a is rotatably mounted, and a hollow cylindrical body 63 that transmits magnetic force is attached between the side plates 66, 66a, while a support leg 68 is attached to a ring body 67, 67a,. 68a... Are provided in the radial direction, and the back surface of the magnet 64 is attached to the tips of the support legs 68, 68a.
The structure of the support roll 11a and the like can be appropriately changed if the magnetic force of the magnet 64 acts on the viscous composition containing the magnetic material. For example, the rotatable hollow cylindrical body 63 is formed with the magnet 64. Or
A magnet 64 may be provided on the outer peripheral side of the hollow cylindrical body 63.

Further, the magnet 64 provided on the support roll 11a and the like can be appropriately changed in the form of the magnet 64 as long as it can magnetically attract the magnetic material of the viscous composition M. (
A magnet having an N pole or S pole on the top surface, or a magnet whose magnetic force (magnetism) is enhanced to about 1000 × 10 ^{−4 to} 3000 × 10 ⁻⁴ Tesla by devising the magnetic pole arrangement and material. 64, and an example thereof will be described with reference to FIGS.
For example, it is preferable to use a multipolar magnet (multipolar magnet) in which a plurality of N poles and S poles are magnetized on at least the upper surface and magnetic poles 69, 69a are arranged, as shown in FIG. 13 (a). , Rectangular (
The longitudinal direction of the strip-shaped magnetic poles 69, 69a is the transport (flow) direction of the transport conveyor 15, and the N poles and the S poles are alternately arranged in parallel in the direction perpendicular to the transport direction.
In this multipolar magnet 64, magnetic lines of force G (magnetic lines of force) indicating the direction and strength of the magnetism are indicated by dashed-dotted arcuate arrows, and the magnetic lines of force G exit from the N pole on the top surface (upward in the belt direction). It is shown that the direction of the magnetic force is perpendicular to the conveying direction, and the strength of the magnetic force (magnetism) is N pole as shown in FIG. It shows that it becomes stronger at the approach position of the S pole.
For this reason, it is preferable that the width of the N-pole or S-pole rectangular magnetic poles 69, 69a,... (Perpendicular to the transport direction) be short (for example, 5 to 10 mm). In order to provide a sufficient magnetic force even in the central part of the magnetic poles 69, 69a, etc., a neodymium magnet 64 made of an alloy mainly composed of iron, neodymium (rare earth element) and boron is preferable.
With this configuration, the viscous composition M containing the magnetic material passing above the magnet 64 having the same magnetic force in the transport direction is adsorbed to the base sheet 17 by the magnetic force.
In addition, when the sheet flow direction and the magnetic force direction are made parallel, strong and weak magnetic forces act alternately, and there is a concern that the laminated viscous composition M may be deformed.

In addition, the arrangement of the magnetic poles 69, 69a,... Is made up of rectangular N poles and S poles alternately. However, as shown in FIG. Magnet 64 which is orthogonal to the conveying direction,
A plurality of 64 may be provided.
Alternatively, as shown in FIG. 14B, rectangular N poles and S poles 69, 69a,.
In this multipolar magnet, the magnetic field lines G are large and high, and the magnetic force acts on the magnetic material of the viscous composition M.
In addition to setting the magnetic pole arrangement appropriately, the magnet 64 has a curved plate shape of a single plate, as well as a single plate curved plate shape, but is not shown in the figure, but the upper surface may have a circular arc shape or a magnetic plate shape. A magnetized plate may be provided to form a multilayer plate.

Next, the second material supply device 33 for supplying and laminating the water retention agent 6 to the exothermic composition 5 laminated on the base material sheet 17 in the horizontal conveyance path 14 of the conveyance conveyor 15 will be described.
As shown in FIGS. 15 and 16, above the transport conveyor 15, the total thickness of the base sheet 17, the stacking height of the exothermic composition 5, and the stacking height of the powdered water retaining agent 6 is set. A second material supply device 33 is installed in a proximity position without contact with the exothermic composition 5 laminated on the base sheet 17 with a substantially equivalent interval.
The water retentive agent 6 is dropped and supplied onto the supply port 72, the descending passage 73, the metering supply unit 36, and the base material sheet 17 to which the hopper 35 is connected in the upper and lower direction of the supply base 71 of the second material supply device 33. The dropping port 37 is sequentially provided in a communication state, and the water retaining agent 6 is dropped from the dropping port 37 onto the exothermic composition 5 laminated on the base sheet 17.
As the metering supply unit 36 provided in the intermediate portion of the supply base 71, a metering roll 75 is rotatably provided in a cylindrical metering space 74 communicating with the upper descending passage 73 and the lower dropping port 37, and the rotation axis is conveyed. On the peripheral surface of the measuring roll 75 which is horizontal in the direction orthogonal to the direction, a measuring concave portion 76 having a desired shape is provided in the heat generating region 4 indicated by a one-dot chain line in the drawing.

15, the measurement grooves 77, 77a... That are long in the width direction of the base sheet 17 (the direction orthogonal to the conveyance direction) are sequentially arranged in the circumferential direction, and the adjacent measurement grooves 77, 77a. Partition wall with upright space
78, 78a, etc., and a plurality of measuring grooves 77, 77a,... Are divided and separated by partition walls 78, 78a.
The measuring grooves 77, 77a... That are long in the width direction are made of various lengths and shorts so as to match the heat generating region 4 in which the water retaining agent 6 is stacked. Corresponding to the relationship, the configuration of the measurement recess 76 (measurement grooves 77, 77a...) Is changed.
For example, when using the plate 18 shown in FIG. 7 and the second material supply device 33 shown in FIG.
The exothermic composition 5 is divided and laminated, the water retaining agent 6 is a planar laminated form, the water retaining agent 6 is laminated between the adjacent exothermic compositions 5, and the water retaining agent 6 is formed on a part of the outer side of the exothermic composition 5. It will be in a non-laminated state.
When the exothermic composition 5 is divided and laminated, and the water retaining agent 6 is laminated only on the upper surface of the exothermic composition 5, as shown in FIG. 17, the measuring grooves 77, 77a,. Has a plurality of measuring grooves 77, 77a... Whose lengths are reduced in the axial direction, and the intervals between the adjacent measuring grooves 77, 77a in the circumferential direction and the axial direction are defined as partition walls 78, 78a. Each is made.
Although not shown, when the exothermic composition 5 is divided and laminated, the water retention agent 6 is laminated on the upper surface of the exothermic composition 5 and the outer periphery of the exothermic composition 5 as shown in FIG. In the printing plate 18, the laminated openings 23, 23 a.
In the second material supply device 33 shown in FIG. 15, the outer edges of the measurement grooves 77, 77 a.

With this configuration, the water retaining agent 6 in the hopper 35 drops from the upper supply port 72 into the descending passage 73 and is filled, and sequentially falls into the measuring grooves 77, 77a... Appropriately arranged according to the rotation of the measuring roll 75. Then, a predetermined amount of water retaining agent 6 is scraped off at the side wall of the supply base 71 that forms the measurement space 74, and the measurement groove 77.
, 77a..., And the measurement grooves 77, 77a that have reached the lower drop opening 37 by rotating the measurement roll 75
The water retaining agent 6 falls on the exothermic composition 5 and the base material sheet 17 from the dropping port 37, and is laminated on these upper surfaces.
The plurality of measuring grooves 77, 77a, ... are partitioned by the partition walls 78, 78a, so that the water retaining agent 6 is not biased, and a predetermined amount of water is retained according to the set position of the circumferential measuring grooves 77, 77a, ... Agent 6 is measuring roll
The water retaining agent 6 that falls sequentially through the dropping port 37 is continuously averaged because the partition walls 78, 78a are narrow and the measuring grooves 77, 77a are close to each other. The film is laminated on the exothermic composition 5 or the like in a substantially planar manner (substantially constant thickness).
In the case shown in FIG. 17, the partition walls 78, 78a...
... falls on average and falls intermittently depending on the position of the measuring grooves 77, 77a ..., and is laminated only on the exothermic composition 5 which is divided and laminated as a whole.

In the laminated form of the exothermic composition 5 and the water retention agent 6, both have a specific positional relationship, and the water retention agent 6 takes into account the time that the water retention agent 6 falls on the exothermic composition 5 etc. from the drop opening 37, Exothermic composition 5
The transport movement of the printing plate 18 related to the stacking position of the water and the rotational movement of the measuring roll 75 related to the stacking position of the water retention agent 6 are synchronized.

Finally, the heat generation action will be described.
Since the exothermic composition 5 in the manufacturing process is viscous and the amount of water retaining agent is less than the required amount, the free water becomes a barrier layer and the exothermic reaction during the manufacturing process and packaging is suppressed.
After packaging in the exterior material, no exothermic reaction occurs because there is no air circulation, and the exothermic function of the product is maintained, while the free water of the exothermic composition 5 is absorbed by the water retention agent 6 and moves. In the exothermic composition 5, the barrier layer disappears and heat generation is possible under air circulation.
When the heating element 1 is taken out from the airtight outer packaging material, the exothermic reaction starts when the air contacts the heating composition 5 through the air-permeable packaging material (base material 2 or coating material 7). ,
Will continue.
When moisture necessary for a smooth exothermic reaction decreases in the exothermic composition 5 due to the continuation of the exothermic reaction, the moisture moves from the water retaining agent 6 to the exothermic composition 5 (including the respective internal movements). The exothermic reaction continues.

In addition, by laminating the viscous exothermic composition 5 in a film shape, the exothermic composition 5 is laminated with a uniform thickness without being displaced, so that the temperature distribution is also made uniform, so that it is in use. Inconvenience and burns due to the occurrence of high-temperature places, safety is improved, and the thickness of the exothermic composition 5 can be reduced. Therefore, the exothermic composition 5 is thin and flexible. It has a high fit to the curved and bent parts such as the shoulders, soles and corners of the body, and has an excellent usability.

It is a top view which shows an example (thing for soles) of the heat generating body manufactured with the manufacturing apparatus of the heat generating body which concerns on this invention. It is principal part expanded sectional drawing of a heat generating body, (a) And (b) is sectional drawing of what laminated | stacked the water retention agent on the heat-generating composition divided | segmented into the small area, (c) is the heat_generation | fever of planar lamination | stacking in a wide area It is sectional drawing of what laminated | stacked the water retention agent on the composition. It is the elements on larger scale and sectional drawing which show the lamination | stacking state of the heat-generating composition and water retention agent to a base material in the state which excluded the coating material from the heat generating body of Fig.2 (a). It is the elements on larger scale and sectional drawing which show the lamination | stacking state of the exothermic composition and water retention agent to a base material sheet in the middle of lamination | stacking of the heat generating body of FIG.2 (b). It is sectional drawing of what laminated | stacked the water retention agent only on the exothermic composition divided | segmented into the small area. It is a schematic diagram of a manufacturing apparatus. It is a partial top view of a printing plate. It is sectional drawing which shows the state which closely packed the exothermic composition to the lamination | stacking opening of the plate body from the supply nozzle. It is sectional drawing which shows the state which starts filling to the next lamination | stacking opening. It is sectional drawing which shows an initial filling completion state. It is sectional drawing which shows the filling state to the lamination | stacking opening of a large area. It is the top view and side view of a backup roll or a support roll. It is a figure which shows a magnet. It is a figure which shows other embodiment of a magnet. It is sectional drawing of the conveyance direction of a 2nd raw material supply apparatus. It is sectional drawing of the orthogonal direction of FIG. It is sectional drawing which shows other embodiment of a 2nd raw material supply apparatus.

Explanation of symbols

5 Exothermic composition 6 Water retention agent 8, 8a ... Non-laminated area
11a Support roll
12 Endless belt
13 Inclined transport path
14 Horizontal transport path
15 Conveyor
17 Base sheet
18 version
21 Inclined transport path
22, 22a ... Non-opening
23, 23a ... Laminated opening
23a, 23b ... Split laminated openings
24 1st stack position
25 Second stack position
26 First material supply device
28 Supply nozzle
32 Discharge port
33 Second material supply device
36 Weighing supply unit
37 Drop port
39 Dressing sheet
41 Sealing means
42 Cutting means
44 Nozzle passage
45 Upstream pool
48 Rear wall
50 inclined wall
51 Cutout
52 Discharge pool
53 Main discharge path
63 Hollow cylinder
64 magnets
69, 69a ... Magnetic pole
70, 70a ... Non-magnetic field
71 Supply substrate
74 Weighing space
75 Weighing roll
76 Weighing recess
77, 77a ... Measuring groove
78, 78a ... Bulkhead

Claims (20)

The substrate sheet is sandwiched and moved by a belt-shaped printing plate provided with a conveying device and a lamination opening, and the viscous heat-generating composition supplied to the lamination opening is laminated on the substrate sheet. The plate body is detached from the base sheet, and the powdery water retaining agent is stacked on the viscous heat-generating composition stacked on the base sheet that is moved by the transport device, and further the coating material sheet is stacked. A method for producing a heating element, wherein the outer peripheral portion of the exothermic composition and water retention agent is sealed and punched into a predetermined shape. The conveying device is composed of an upstream inclined conveying path and a downstream horizontal conveying path, and a belt-shaped plate body is formed as an inclined conveying path, and the base sheet is formed by the inclined conveying path and the belt-shaped plate body of the conveying device. Moves while being held in an inclined state, the conveying device changes from the inclined conveying path to the horizontal conveying path, the belt-shaped plate is detached from the base sheet, and the exothermic composition is laminated in the horizontal conveying path of the conveying device. 2. The method of manufacturing a heating element according to claim 1, wherein the base material sheet is moved. The method for producing a heating element according to claim 1 or 2, wherein the heat-retaining composition laminated on the base sheet is laminated in a non-contact manner by dropping a water retention agent from an adjacent position. Weigh the water retention agent with the metering supply unit provided in the water retention agent supply device and set the fall time to correspond to the lamination form relationship between the exothermic composition and the water retention agent, and also stack the water retention agent on the exothermic composition and the base sheet 4. The method of manufacturing a heating element according to claim 3, wherein a water retention agent having a substantially constant thickness is dropped in the region. The exothermic composition layered form is a divided laminated form that is adjacent, independent, and provided with a non-laminated region between them, and the non-laminated region between the exothermic composition and between the exothermic compositions. The method for producing a heating element according to claim 4, wherein a water retention agent is laminated on the base sheet. 6. The method of manufacturing a heating element according to claim 5, wherein a water retention agent is laminated on the base sheet in the outer peripheral portion of the heat-generating composition that has been divided and laminated. The exothermic composition layered form is a divided layered form that is adjacent, independent, and provided with a non-laminated area between them, and measures and drops the water retention agent at the metering supply section provided in the water retention agent supply device. The water retaining agent having a substantially constant thickness is dropped on the exothermic composition at a predetermined time, and the water retaining agent is laminated in a smaller area than the divided exothermic composition. A method for manufacturing a heating element. A belt-shaped printing plate is provided that moves on a conveying path with a base sheet sandwiched and held at the upstream portion of the conveying device, and the belt-shaped printing plate is provided with a laminating opening. A first material supply device is provided for supplying a viscous exothermic composition to the lamination opening of the plate at the lamination position,
A second stacking position is set in the transport path downstream of the transport device that supports and moves the base sheet, and the second
Providing a second material supply device for supplying a powdery water retention agent onto the viscous exothermic composition laminated on the base sheet at the lamination position;
A coating sheet is laminated on the base sheet and the exothermic composition and water retention agent laminated on the base sheet downstream of the second lamination position, and the outer periphery of the exothermic composition and water retention agent is sealed, An apparatus for producing a heating element, characterized in that each means for punching into a shape is provided. 9. The apparatus for manufacturing a heating element according to claim 8, wherein the conveying device comprises an upstream inclined conveying path and a downstream horizontal conveying path, and a belt-shaped printing plate is formed as an inclined conveying path. Bend the belt by supporting the belt of the transport device with a support roll that can rotate freely in the upstream and downstream intermediate parts,
The apparatus for manufacturing a heating element according to claim 9, wherein the upstream portion is formed as an inclined conveyance path and the downstream portion is formed as a horizontal conveyance path. The heating device manufacturing apparatus according to claim 10, wherein magnetic force suction means is provided on the support roll. The support roll has a magnet provided inside a rotatable hollow cylindrical body.
The manufacturing apparatus of the heat generating body of description. The magnet of the magnetic attraction means is a multipolar magnet in which a plurality of rectangular magnetic poles are arranged on the upper surface. The longitudinal direction of the rectangular magnetic poles is the conveying direction, and the N pole and the S pole are alternately arranged in the direction perpendicular to the conveying direction. The apparatus for manufacturing a heating element according to claim 11 or 12, characterized in that the heating element is arranged in an array. 14. The heating element manufacturing apparatus according to claim 13, wherein a rectangular non-magnetic pole area is provided between the magnetic poles. The first material supply device includes a discharge port provided in a nozzle passage provided in the upstream and downstream direction of the supply nozzle, and has a discharge opening in sliding contact with a printing plate having a laminated opening and continuously conveyed with the base sheet. The rear wall of the nozzle is formed as an inclined wall having a high nozzle passage side, the downstream end of the inclined wall is formed as a sliding part that is in sliding contact with the plate body, the inclined wall is formed as a pressing wall, and the lower part of the inclined wall is a discharge reservoir. As well as
The apparatus for manufacturing a heating element according to claim 8, 9, 10, 11, 12, 13 or 14, wherein the discharge port is formed by communicating the discharge reservoir with a main discharge path immediately below the nozzle passage. 16. A large-volume upstream reservoir is installed in the middle of the nozzle passage.
The manufacturing apparatus of the heat generating body of description. The second material supply device communicates a supply port and a drop port with a cylindrical measurement space provided in a supply base, and a measurement roll is rotatably provided in the measurement space, and a measurement recess is provided on a peripheral surface of the measurement roll. The heating element manufacturing apparatus according to claim 8, 9, 10, 11, 12, 13, 14, 15, or 16. 18. The heating element manufacturing apparatus according to claim 17, wherein the measurement concave portion is composed of a plurality of measurement grooves separated by a partition wall. A heat-generating composition in which a water retention agent is laminated only on a heat-generating composition that is divided and laminated, or a water-retaining agent is laminated on a heat-generating composition that is divided and laminated, and a base material sheet around the heat-generating composition. The apparatus for manufacturing a heating element according to claim 18, wherein a plurality of measuring grooves are set in correspondence with the relationship between the laminated form of the water retention agent and the water retention agent. The laminated openings provided in the printing plate are formed from a plurality of divided laminated openings so as to be adjacent, independent, and have a non-opening portion between them. 11, 12,
An apparatus for producing a heating element according to 13, 14, 15, 16, 17, 18 or 19.

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