JP5508832B2 - Manufacturing method of heating tool - Google Patents

Description

  The present invention relates to a method of manufacturing a heating tool that is applied to a desired part of the body and imparts heat to the part.

  Conventionally, in order to relieve back pain, stiff shoulders, etc., a heating device that gives heat to the body has been used. In general, a heating tool is configured such that a sheet-like heating element is accommodated in a bag body having air permeability. The heating element is configured to include an oxidizable metal such as iron powder, an electrolyte that serves as a catalyst for an oxidation reaction such as sodium chloride, and water, and the oxidizable metal is oxidized in contact with oxygen in the air. It generates heat due to oxidation heat generated by the oxidation reaction.

  With regard to the technology related to such a heating device, for example, Patent Document 1 discloses that an aroma, antipruritic, anti-inflammatory, analgesic, deodorant, antioxidant, antibacterial or bactericidal component is applied to the outer surface of the bag body in which the exothermic composition layer is enclosed. A heat generating structure is described in which a fiber layer having an encapsulating microcapsule is bonded or fused. Patent Document 1 relates to a method for producing the exothermic composition layer. After immersing a fiber layer such as a non-woven fabric in a microcapsule composition, the fiber layer is taken out and dehydrated and dried with hot air to thereby obtain the exothermic composition. It is described that a physical layer is manufactured. According to the heat generating structure described in Patent Document 1, the components in the microcapsules are released during use, and a predetermined effect is achieved by the components.

  Patent Document 2 describes a packaging material for a heating bag in which a packaging material constituting a heating bag containing a heating composition is impregnated with a solution containing an antibacterial agent and a fluorescent agent, and a method for manufacturing the packaging material. . According to the manufacturing method described in Patent Document 2, it is supposed that a desired amount of antibacterial agent can be uniformly applied to the packaging material by using a gravure roll type apparatus.

  Patent Document 3 describes a laminate for producing a heating element including a laminate of a fiber layer capable of holding an electrolyte solution and a heating layer containing a heating main agent such as iron powder, and a method for manufacturing the same. Patent Document 3 relates to a method for manufacturing the laminate, wherein after the laminate of the fiber layer and the heat generating layer is compressed, an electrolyte solution impregnation treatment is performed in which the electrolyte solution is sprayed on the laminate. Has been.

JP 2007-236725 A JP 2001-87301 A JP 2001-71404 A

  When it is going to add functions (aroma generation | occurrence | production, antibacterial, anti-inflammatory, etc.) other than heat provision to a heating tool, it is necessary to contain the chemical | medical agent which has such a function in a heating tool. The heating devices described in Patent Documents 1 and 2 contain such a medicine in a bag body that contains a heating element and contacts the human body during use, but the medicine may directly touch the skin. Depending on the drug, the user may feel uncomfortable and may cause inconveniences such as rough skin.

In view of this, a method is conceivable in which a medicine is contained in a heating element housed in the bag during use. However, when applying a chemical solution containing a drug to the heating element, the following disadvantages 1) to 3) may occur.
1) After the chemical solution is applied to the heating element, the applied portion comes into contact with each part of the heating device manufacturing apparatus, and each part is contaminated by the chemical solution.
2) When the chemical solution is directly applied to the heating element, there is a possibility that the heating element is inhibited from generating heat due to the chemical solution. For example, when a chemical solution containing a lipophilic drug such as menthol is directly applied to the heating element, the chemical solution envelops the exothermic substance (oxidizable metal) in the heating element and makes contact between the exothermic substance and air. There is a risk of blocking the heat generation, which may cause an inhibition of heat generation.
3) When the heating element to which the chemical solution is applied is accommodated in the bag body, the chemical solution is transferred from the heating element to the bag body to contaminate the bag body, leading to contamination of the final product (heater). In addition, for example, when the bag body has air permeability, if the chemical liquid is transferred to the air-permeable bag body, the air permeability is hindered by the chemical liquid, and the performance of the product may be deteriorated.

  Therefore, the subject of this invention is the manufacturing method of the heating tool which can provide stably the high quality heating tool which has functions other than heat provision and a function other than heat provision, without producing the trouble of said 1) -3), and It is to provide a manufacturing apparatus.

  The present invention includes a heating element comprising an exothermic composition containing an oxidizable metal and an aqueous electrolyte solution, and a chemical solution comprising a liquid-retaining sheet containing a lipophilic drug and a drug solution containing the drug. A method of manufacturing a heating device provided with a laminate with a sheet, wherein the chemical solution is applied to one surface of the belt-like liquid-holding sheet using contact-type coating means, and then the liquid-holding sheet and A step of stacking the belt-like exothermic composition so that the one surface of the liquid-retaining sheet faces the heat-generating composition to obtain a strip-like laminate precursor, and the belt-like laminate precursor is predetermined. And a step of obtaining a laminate by cutting the length into a single-layer laminate precursor and applying the electrolyte aqueous solution to the single-layer laminate precursor to obtain the laminate. This solves the problem.

  The present invention also provides a heating element comprising an exothermic composition containing an oxidizable metal and an aqueous electrolyte solution, and a chemical solution comprising a liquid-holding sheet containing a lipophilic drug and a drug solution containing the drug. A method of manufacturing a heating device provided with a laminate with a containing sheet, wherein a liquid mixture of the chemical solution and the aqueous electrolyte solution is applied to one surface of the belt-like liquid-holding sheet using contact-type coating means Thereafter, the liquid-holding sheet and the belt-like exothermic composition are overlapped so that the one surface of the liquid-holding sheet faces the heat-generating composition. The problem is solved by providing a method for manufacturing a heating tool.

  The present invention also provides a heating element comprising an exothermic composition containing an oxidizable metal and an aqueous electrolyte solution, and a chemical solution comprising a liquid-holding sheet containing a lipophilic drug and a drug solution containing the drug. A contact-type coating means having a coater head that coats the coating liquid in a state of being in contact with one surface of the belt-like liquid-holding sheet, which is a manufacturing apparatus that can be used for manufacturing a heating tool provided with a containing sheet And the strip-shaped liquid-holding sheet coated with the coating liquid by the coating means and the strip-shaped exothermic composition are stacked so that the one surface of the liquid-holding sheet faces the exothermic composition. The above-described problem is solved by providing a heating device manufacturing apparatus including a superimposing means for matching.

  ADVANTAGE OF THE INVENTION According to this invention, the high quality heating tool which has a function other than heat provision and heat provision can be provided stably.

  Specifically, according to the present invention, the chemical solution is not directly applied to the exothermic composition, but is applied to a liquid holding sheet that is separate from the exothermic composition and does not have a function of imparting heat, and the liquid holding property. By overlapping the sheet and the exothermic composition, the occurrence of the problems 1) to 3) can be effectively prevented. In addition, according to the present invention, by applying the chemical liquid using the contact-type coating means, variation in the chemical liquid application amount can be suppressed, and a desired amount of the chemical liquid can be stabilized at a desired position with high accuracy. And can provide a high-quality heating device stably.

FIG. 1 is a schematic cross-sectional view of an example of a heating tool obtained by carrying out the heating tool manufacturing method of the present invention. FIG. 2 is a diagram illustrating an example of a usage state of the heating tool illustrated in FIG. 1. FIG. 3 is a diagram showing an overall configuration of an embodiment of the manufacturing apparatus of the present invention that can be used for carrying out the method for manufacturing a heating tool of the present invention.

  Hereinafter, a method for manufacturing a heating tool of the present invention (hereinafter, also simply referred to as a manufacturing method) will be described based on preferred embodiments with reference to the drawings. First, the heating tool manufactured by implementation of the manufacturing method of this invention is demonstrated with reference to drawings based on the preferable one Embodiment.

  FIG. 1 shows a heating tool 1 of the present embodiment. The heating device 1 is used to apply heat (steam heat) accompanied by water vapor by directly attaching it to the user's shoulder, waist, neck, joints of arms and legs, abdomen, and the like. It can be said to be a tool. FIG. 2 shows a state in which the heating tool 1 is directly attached to the user's shoulder. The usage time of the heating tool 1 is usually several hours to about 6 hours. “Granting heat” means that the heating tool 1 is directly brought into contact with the skin to impart heat, and that the heat is indirectly brought into contact with the skin through an inclusion capable of transmitting water vapor to impart heat. Includes both.

  The heating tool 1 includes a laminated body 4 of a heating element 2 and a chemical solution-containing sheet 3 and a container 5 that houses the laminated body 4. Although not shown, the container 5 can have a rectangular shape in plan view, for example. The container 5 is formed by joining the sheet materials 6 and 7 at a predetermined position to form a flat sealed space, and the stacked body 4 can be accommodated in the sealed space. The container 5 having a flat shape is located on the side close to the user's skin when used, and on the side opposite to the first surface 11 and is far from the user's skin when used. It has the 2nd surface 12 located in the side. The first surface 11 is formed by the sheet material 6, and the second surface 12 is formed by the sheet material 7. The sheet materials 6 and 7 are joined to each other at the peripheral portion of the container 5 by joining means such as heat fusion and adhesion, and the joined portions are closed in a plan view. The inside of the joint portion is a closed space, and this closed space is a housing portion for the laminated body 4, and one laminated body 4 is housed in the housing portion.

  The heating element 2 is made by adding an aqueous electrolyte solution to a heating composition 8 containing an oxidizable metal. That is, the heat generating body 2 is a water-containing state of the heat generating composition 8 containing an oxidizable metal and an electrolyte. The heating element 2 generates water vapor heated to a predetermined temperature using heat generated by an oxidation reaction caused by contact of the oxidizable metal with oxygen.

  The heating element 2 contains 20 to 60 parts by mass, particularly 30 to 45 parts by mass of an electrolyte aqueous solution containing 2 to 35% by mass, particularly 5 to 10% by mass of the electrolyte with respect to 100 parts by mass of the exothermic composition 8. It is preferable to be configured. Examples of the electrolyte include alkali metal chlorides such as sodium chloride and potassium chloride, and alkaline earth metal chlorides such as calcium chloride and magnesium chloride.

  The exothermic composition 8 is preferably a fiber sheet containing an oxidizable metal and a fibrous material. That is, the heating element 2 is preferably a sheet-like material (a heating sheet formed in a sheet shape) made of a fiber sheet. Use of a sheet-like heating element is preferable from the viewpoint that the oxidizable metal is not biased and the steam heat can be uniformly applied to the user's skin regardless of the posture of the user. . The exothermic composition 8 which is a fiber sheet can be produced by a known wet papermaking method. The exothermic composition 8 preferably contains a reaction accelerator.

  The exothermic composition 8 which is a fiber sheet comprises 10 to 90 mass%, particularly 30 to 85 mass% oxidizable metal, 2 to 80 mass%, particularly 5 to 50 mass% fibrous material, and 0.5 It is preferable that it is comprised including -60 mass%, especially 1-50 mass% of reaction accelerator.

  As various materials constituting the exothermic composition 8, the same materials as those usually used in the technical field can be used. Examples of the oxidizable metal include iron, aluminum, zinc, and copper. Examples of the fibrous material include wood pulp and various synthetic fibers. Examples of the reaction accelerator include activated carbon, carbon black, graphite and the like. The exothermic composition 8 may further contain a water retention agent (for example, vermiculite, calcium silicate, silica gel, silica porous material, alumina, pulp, wood powder, water-absorbing polymer, etc.).

  The chemical liquid-containing sheet 3 is made by containing a chemical liquid containing a lipophilic drug and a dissolving agent for the drug in the liquid holding sheet 9. The chemical liquid impregnated in the liquid retaining sheet 9 includes a component having a function other than the application of heat by the heating element 2, and the chemical liquid-containing sheet 3 has a function other than the application of heat. Functions other than the application of heat vary depending on the type of the drug, and examples include aroma generation, antibacterial activity, and anti-inflammation. The chemical solution-containing sheet 3 may have two or more of these functions.

  The chemical liquid-containing sheet 3 is preferably configured so that the chemical liquid is contained in an amount of 10 to 1000 parts by mass, particularly 500 to 800 parts by mass with respect to 100 parts by mass of the liquid retaining sheet 9.

  As the liquid retaining sheet 9, a sheet material having high chemical liquid permeability and capable of absorbing and retaining the chemical liquid (water) is used. Examples of such a material include fiber sheets such as paper, non-woven fabric, woven fabric, and knitted fabric made from fibers. Moreover, porous bodies, such as sponge, etc. are mentioned. Examples of the fibers include those mainly composed of natural fibers such as plant fibers and animal fibers. Examples of plant fibers include cotton, kabok, wood pulp, non-wood pulp, peanut protein fiber, corn protein fiber, soy protein fiber, mannan fiber, rubber fiber, hemp, Manila hemp, sisal hemp, New Zealand hemp, Rafu hemp, eggplant, Examples include igusa and straw. Examples of animal fibers include wool, goat hair, mohair, cashmere, alkapa, Angola, camel, vicuña, silk, feathers, down, feather, argin fiber, chitin fiber, and casein fiber. Of these fibers, plant fibers are preferably used, and wood pulp is particularly preferably used from the viewpoint of retention of chemical solution (water) absorption. As the wood pulp, it is preferable to use a chemical pulp such as NBKP or LBKP from the viewpoints of chemical liquid (moisture) absorption retention and economy. The liquid retaining sheet 9 can be manufactured by a known wet papermaking method.

  When the liquid retaining sheet 9 is made of paper, polyolefin such as high density polyethylene, medium density polyethylene, low density polyethylene, and polypropylene, polyester, polyvinylidene chloride, starch, polyvinyl for the purpose of increasing the strength of the paper It is also possible to mix single fibers such as alcohol or polyvinyl acetate or copolymers or modified products thereof, or composite fibers having a core-sheath structure having these resin components in the sheath within a range that does not impair the retention of chemicals. is there. When these fibers are mixed, the amount is preferably 50% by weight or less, particularly preferably 30% by weight or less, particularly preferably 10% by weight or less based on the sheet.

  The liquid retaining sheet 9 may be composed of a laminated sheet of a breathable sheet and a non-breathable sheet. When the liquid retaining sheet 9 is made of the laminated sheet, in the method for manufacturing the heating tool 1 described later, a chemical solution is applied to the breathable sheet, and in the heating tool 1, the breathable material to which the chemical solution is applied is applied. The sheet is disposed so as to face the heating element 2 to form a laminate 4. As the breathable sheet, the above-described “sheet material having high chemical permeability and capable of absorbing and retaining chemical liquid (water)” can be used. Examples of the non-breathable sheet include sheets made of polyolefin such as polyethylene and polypropylene, and resins such as polyester, polyamide, polyurethane, polystyrene, nylon, polyvinylidene chloride, and polyethylene-vinyl acetate copolymer. The laminated sheet can be produced by a known laminating process.

  The chemical solution used in the present invention contains a lipophilic drug and a solubilizer for the drug. Examples of the lipophilic drug include various fragrance raw materials and the like, for example, menthol. When menthol is used as a medicine, the heating tool 1 has a function of releasing fragrance and an anesthetic effect (analgesic) by the chemical liquid-containing sheet 3 in addition to the function of imparting heat by the heating element 2.

  The content rate of the chemical | medical agent in the chemical | medical solution used by this invention is set suitably by the kind of chemical | medical agent. For example, when menthol is used as a drug, the content of menthol in the drug solution is preferably 0.5 to 60% by mass, more preferably 2.5 to 20% by mass.

  In addition, as the drug solubilizer used in the present invention, a solvent in which a lipophilic drug can be dispersed or dissolved can be used, and it is appropriately selected from lipophilic solvents according to the type of the drug. For example, when menthol is used as a medicine, as a solubilizer, polyethylene glycol, polypropylene glycol, dipropylene glycol, ester oil, castor oil, alcohol, etc. can be used, and two or more of these can be used in combination. Also good. The content of the solubilizer in the chemical solution is preferably 40 to 99.5% by mass, and more preferably 80 to 97.5% by mass.

  The chemical solution used in the present invention may contain other components in addition to the lipophilic drug and its dissolving agent. However, the chemical solution used in the present invention does not contain an exothermic substance such as an oxidizable metal. Examples of other components include water and a surfactant. As the surfactant, known ones can be used without particular limitation, and examples thereof include 2-octyldodecanol and polyoxyethylene hydrogenated castor oil.

  In the container 5, as shown in FIG. 1, the heat generating body 2 and the chemical | medical solution containing sheet | seat 3 are arrange | positioned adjacent to each other, and comprise the laminated body 4. Not intervening. Due to such a configuration of the laminated body 4 and due to a manufacturing process of the heating tool 1 described later, the heating element 2 (heating composition 8) includes the chemical solution-containing sheet 3 (liquid holding sheet 9). ) Or a part of its components may be contained, and the chemical solution-containing sheet 3 contains an aqueous electrolyte solution contained in the heating element 2 or a part of its components. There may be.

  The chemical liquid-containing sheet 3 is disposed between the heating element 2 and the sheet material 7 that forms the second surface 12 of the heating tool 1. When the heating tool 1 is used, the skin of the user is more than the heating element 2. Located on the far side. The chemical liquid-containing sheet 3 (liquid holding sheet 9) has substantially the same shape as the heating element 2 (heating composition 8). However, this is not critical in the present invention, and the chemical solution-containing sheet 3 (liquid holding sheet 9) may be larger than the heating element 2 (heating composition 8) or may be smaller. Good.

  The first surface 11 in the heating tool 1 of the present embodiment is at least partly a ventilation surface that allows air and water vapor to pass therethrough, and the second surface 12 located on the opposite side is air and The non-ventilated surface is substantially impossible to transmit water vapor. The heating tool 1 is used so that the first surface 11 side faces the user's skin surface and the second surface 12 side faces outward, and the water vapor generated by the heat generated by the heating element 2 is the first. It is comprised so that it can provide to the skin surface which is a target object through the surface 11 of this. Moreover, the active ingredient derived from the medicine contained in the chemical liquid-containing sheet 3 is applied to the skin surface through the first surface 11.

Whether the outer surfaces facing each other of the heating tool 1 are ventilation surfaces or non-venting surfaces can be determined by the air permeability measured according to JIS P8117 (conforming to ISO5636 / 5-Part5). The air permeability is a value defined by the time taken for 100 ml of air to pass through an area of 6.42 cm ² . High air permeability means that it takes time to pass air, that is, low air permeability, and conversely, low air permeability means high air permeability. Thus, the magnitude of the air permeability is opposite to the air permeability. The air permeability of the first surface 11 which is a ventilation surface is preferably 100000 seconds or less, more preferably 1000 to 20000 seconds. Further, the air permeability of the second surface 12 which is a non-venting surface is preferably more than 100,000 seconds.

  As the sheet material 6 forming the first surface 11 that is a ventilation surface, for example, a resin sheet is formed with a number of holes penetrating the sheet in the thickness direction, and a synthetic material such as polyolefin is used. Non-synthetic fibers such as pulp, wood pulp, rayon and acetate, vinylon fibers, polyester fibers, etc. can be used, and non-woven fabrics, woven fabrics, synthetic papers, papers, etc. can be used. A laminated sheet can also be used. As the apertured sheet, for example, a sheet made of resin in which a large number of holes are formed by mechanical means; a mixed sheet of resin and an inorganic filler is peeled off by stretching to form micropores in the mixed sheet Examples include those in which micropores are communicated using open cells by foam molding. Examples of the resin that forms the aperture sheet include polyolefins such as polyethylene (PE) and polypropylene (PP), polyesters, polyamides, polyurethanes, polystyrenes, and polyethylene-vinyl acetate copolymers. The sheet material 6 can also be used by overlapping a plurality of sheets.

  Examples of the sheet material 7 that forms the second surface 12 that is a non-venting surface include polyolefins such as PE and PP, polyesters, polyamides, polyurethanes, polystyrenes, nylons, polyvinylidene chloride, polyethylene-vinyl acetate copolymers, and the like. The sheet | seat which consists of these resin is mentioned. In particular, when the heating element needs to be concealed, a sheet in which an inorganic filler such as titanium oxide is blended in the resin that forms the apertured sheet is preferably used. The sheet material 7 can also be used by overlapping a plurality of sheets.

  Next, the manufacturing method of the present invention will be described with reference to the drawings, taking the manufacturing method of the heating tool 1 described above as an example. FIG. 3 shows the overall configuration of a manufacturing apparatus 30 used for carrying out the manufacturing method of the present embodiment. As shown in FIG. 3, the manufacturing apparatus 30 has contact type coating means (chemical solution coating) having a coater head 33 that coats the coating solution (chemical solution W) while being in contact with one surface of the belt-shaped liquid retaining sheet 9 ′. Means 31), the belt-like liquid-retaining sheet 9 ′ coated with the coating liquid by the coating means 31, and the belt-like exothermic composition 8 ′, the one surface of the liquid-holding sheet 9 ′ (application of the chemical liquid W) And a superimposing means for superimposing such that the surface) faces the exothermic composition 8 '.

  More specifically, the manufacturing apparatus 30 includes a well-known traveling means (not shown) that travels the belt-shaped exothermic composition 8 ′ and the strip-shaped liquid retaining sheet 9 ′ in the longitudinal direction thereof, and the liquid retaining sheet 9. The chemical solution applying means 31 for applying the chemical solution W to the ′, the integration means 35 for integrating the belt-shaped laminate precursor 10 ′ formed by superimposing the exothermic composition 8 ′ and the liquid retaining sheet 9 ′, and the integral And a cutter roll 38 serving as a cutting means for cutting the strip-shaped laminated body precursor 10 ′ into a plurality of single-layer laminated body precursors 10 by cutting them into a predetermined length, and arranged at predetermined intervals in one direction. Electrolytic aqueous solution discharge provided with a conveyor belt 40 as a traveling means for causing the plurality of single-layer laminated body precursors 10 to travel in the one direction, and a nozzle 41 for discharging (dropping) the aqueous electrolyte solution onto each laminated body precursor 10 Means (not shown). Further, the manufacturing apparatus 30 has a belt-like shape on the laminated body 4 (laminated body of the heating element 2 and the chemical liquid-containing sheet 3) obtained by applying the electrolyte aqueous solution to the laminated body precursor 10 on the downstream side of the nozzle 41. Sheet material supply means (not shown) for supplying the sheet material 6 ', a heat roll 61 as means for heat-pressing the strip-shaped sheet materials 6' and 7 'at predetermined locations, and a cutter roll as cutting means 62, and the laminated body 4 is packaged with the sheet materials 6 and 7 by each of these means to form the heating tool 1 having the above-described configuration.

  The traveling means includes traveling paths for the liquid-retaining sheet 9 ′ and the heat generating composition 8 ′ configured by various rolls such as a transporting roll, and each traveling path is coated with the chemical liquid W. The liquid retaining sheet 9 ′ and the heat generating composition 8 ′ are configured to be superposed in the above-described form while running in the longitudinal direction thereof. That is, in the present embodiment, the traveling means (traveling path) superimposes the liquid retaining sheet 9 ′ and the heat generating composition 8 ′, and the superimposing means (the forming means of the strip-shaped laminate precursor 10 ′). ).

  The chemical solution applying means 31 is a device for applying the chemical solution W having the above-described composition to the strip-shaped liquid-holding sheet 9 ′ that is an object to be coated. A coater head 33 to be applied and a pump 34 as a liquid feeding means for feeding the chemical liquid W stored in the storage tank 32 to the coater head 33 are provided. The respective parts constituting the chemical solution applying means 31 are fluidly connected by a tube such as a flexible tube. Depending on the room temperature where the chemical solution application means 31 is placed, the chemical solution W may change in viscosity or may cause precipitation of the chemical agent. Therefore, in order to prevent such inconvenience, the chemical solution application means 31 includes the above-described parts. It is preferable to have a heating means capable of heating the connected pipe. As the pump 34, a pump that is usually used in an apparatus that handles this type of liquid can be used without any particular limitation. The chemical liquid W in the storage tank 32 is continuously supplied to the coater head 33 by the pump 34, and the coater head 33 continuously applies the chemical liquid W to the object to be coated.

  The chemical solution applying means 31 is a contact-type applying means in which the coater head 33 comes into contact with the belt-like liquid-retaining sheet 9 ′ that is an object to be applied during application. As a chemical solution applying means, like an aqueous electrolyte solution discharging means (not shown) provided with a nozzle 41 for discharging an aqueous electrolyte solution, it is not contacted with an object to be applied at the time of application, and is applied from a position away from the object to be applied. Although there is a non-contact type application unit that discharges a chemical toward an object, in this embodiment, a contact type application unit is used for applying the chemical. A non-contact type application means such as the electrolyte aqueous solution discharge means is most suitable for intermittently discharging (dropping) a chemical solution onto an object to be coated, whereas a contact type application means such as the chemical solution applying means 31 is used. The application means is optimal when a chemical solution is continuously applied to an object to be coated.

  Examples of contact-type coating means that can be used as the chemical solution coating means 31 include a gravure coater, a reverse coater, a die coater, and a comma coater. Among these, a die coater is particularly preferable in terms of quantitativeness.

  The integration means 35 includes a pair of blade groove rolls 36 and 37 having blade grooves that mesh with each other. That is, a plurality of blades having a predetermined height and extending in the circumferential direction of each roll are arranged on the peripheral surface portions of both rolls 36 and 37 at predetermined intervals in the roll axis direction. A blade groove is formed. When the blade grooves in the two rolls 36 and 37 are engaged with each other, the blade grooves are engaged with each other at a predetermined engagement depth. By passing, the portion of the laminate precursor 10 ′ that is in contact with the plurality of blades constituting the blade groove is broken, and thereby, a linear cut extending in the MD is formed on the surface of the laminate precursor 10 ′. A plurality are formed.

  In the integration means 35, one of the blade groove rolls 36 and 37 is wound around a plurality of grooves corresponding to a plurality of blades of a smooth anvil roll or blade groove roll in which no blade is formed on the peripheral surface portion. You may replace with the anvil roll which has a surface part. Even when such an anvil roll is used in combination with the blade groove roll 36 or 37, a plurality of linear cuts extending in the MD can be formed in the workpiece.

  As described above, the nozzle 41 discharges (drops) the aqueous electrolyte solution toward the application object, and is a part of an aqueous electrolyte solution discharge means (not shown) which is a non-contact type application means. The electrolyte aqueous solution discharge means includes a storage tank (not shown) for storing the electrolyte aqueous solution, and a pump (not shown) as a liquid feeding means for sending the electrolyte aqueous solution in the storage tank to the nozzle 41. Operation of the pump The aqueous electrolyte solution can be intermittently discharged from the nozzle 41 by the control. As a pump in the electrolyte aqueous solution discharge means, for example, a plunger-type metering pump can be used, and as a commercially available product, trade name “Hicera Pump” manufactured by Iwaki Co., Ltd. can be mentioned.

  The manufacturing method of the heating tool 1 using the manufacturing apparatus 30 having the above configuration will be described. In the manufacturing method of the present embodiment, the chemical liquid W having the above-described composition is applied to one surface of the belt-shaped liquid-retaining sheet 9 ′ using the contact-type chemical liquid applying unit 31, and then the liquid-retaining sheet 9 ′ and the belt-shaped liquid-retaining sheet 9 ′ are coated. A step of superposing the exothermic composition 8 ′ so that the one surface of the liquid retaining sheet 9 ′ (chemical solution application surface) faces the exothermic composition 8 ′ to obtain a strip-shaped laminate precursor 10 ′; The strip-shaped laminate precursor 10 ′ is cut into a predetermined length to obtain a single-layer laminate precursor 10, and an aqueous electrolyte solution is applied to the single-layer laminate precursor 10 by a nozzle 41, and the heating element described above is applied. 2 and the process of obtaining the laminated body 4 of the chemical | medical solution containing sheet | seat 3 is provided.

  In the manufacturing method of the present embodiment, as shown in FIG. 3, first, a strip-shaped exothermic composition 8 ′ and a strip-shaped liquid-holding sheet 9 ′ are separated from each other and indicated by reference numeral X1 in the drawing (MD ). And the coater head 33 of the chemical | medical solution application means 31 is made to contact one surface of the liquid retention sheet | seat 9 'currently traveled, and the coating liquid W is continuously apply | coated to this one surface. The chemical liquid W stored in the storage tank 32 is continuously supplied to the coater head 33 via the pump 34. The liquid retaining sheet 9 ′ becomes the chemical liquid containing sheet 3 containing the chemical liquid when the chemical liquid W is applied.

  Next, the belt-like liquid-retaining sheet 9 ′ to which the chemical liquid W is applied and the belt-like exothermic composition 8 ′ traveling on a traveling path different from the sheet 9 ′ are used as the chemical liquid in the liquid-retaining sheet 9 ′. The belt-shaped laminate precursor 10 ′ is obtained by superimposing the W coating surface so as to face the exothermic composition 8 ′. At this stage, the exothermic composition 8 ′ and the liquid retaining sheet 9 ′ are simply overlapped and are not joined together. The application surface of the chemical liquid W in the liquid-holding sheet 9 ′ may not contact with the constituent members of the manufacturing apparatus 30 such as a transport roll until the application surface is overlaid on the exothermic composition 8 ′. This is preferable from the viewpoint of maintaining the state of the coated surface to sufficiently exert the effect of the chemical solution and avoiding corrosion of each part of the apparatus by the chemical solution.

  Next, the band-shaped laminate precursor 10 ′ is integrated by the integration means 35. Specifically, the laminate precursor 10 'is passed through between the upper roll 36 and the lower roll 37 constituting the integration means 35, and linearly extending to the MD on the surface of the laminate precursor 10'. Form a notch. By the integration process of the laminate precursor 10 'by the integration means 35, the constituent fibers of the heat generating composition 8' and the liquid holding sheet 9 'are entangled, and the heat generating composition 8' and the liquid holding sheet are formed. 9 ′ is difficult to peel off and is integrated. In addition, the formation of a plurality of cuts extending in the running direction X1 (MD) of the laminate precursor 10 ′ is effective in improving the air permeability of the laminate, and thus improving the heat generation characteristics.

  The strip-shaped laminate precursor 10 ′ integrated by the integration means 35 is cut into a predetermined length by the cutter roll 38 to form a plurality of single-layer laminate precursors 10. A plurality of single-layer laminated body precursors 10 are self-running in the direction X2 (MD) opposite to the running direction X1 of the belt-like laminated body precursor 10 ′ by the reverse roll 39, and the belt-like shape on the conveyor belt 40. The sheet material 7 ′ is arranged in a row at a predetermined interval in the direction X2, and is conveyed below the nozzle 41 together with the sheet material 7 ′. At this time, the belt-like sheet material 7 ′, the sheet chemical solution-containing sheet 3, and the sheet heating composition 8 are laminated in this order from the conveying belt 40 side.

  As described above, the nozzle 41 is one of the constituent members of the electrolyte aqueous solution discharge means (not shown) that is a non-contact type application means. The electrolyte aqueous solution is ejected toward 10, and the electrolyte aqueous solution is applied to the heat generating composition 8 in the laminate precursor 10. Thereby, the heat generating composition 8 becomes the heat generating body 2 containing the electrolyte aqueous solution, and the laminated body precursor 10 becomes the laminated body 4 of the heat generating body 2 and the chemical liquid containing sheet 3.

  Next, a strip-shaped sheet material 6 ′ is supplied onto the application surface of the electrolyte aqueous solution (the upper surface of the laminate 4) in the laminate 4 by the sheet material supply means (not shown). As a result, the laminate 4 is sandwiched between the supplied sheet material 6 ′ and the sheet material 7 ′ already arranged below the laminate 4. Next, between the heat rolls 61, both sheet materials 6 ′ and 7 ′ positioned around the laminate 4 are heat-sealed to obtain the heating tool continuum 1 ′, and then the cutter roll 62 is used as the heating tool continuum. 1 'is cut into a predetermined length. In this way, the target heating tool 1 is obtained.

  According to the method for manufacturing a heating tool of the present embodiment using the manufacturing apparatus 30, the chemical solution W is not directly applied to the exothermic composition 8 ′, but has a function of imparting heat separately from the exothermic composition 8 ′. Since the liquid holding sheet 9 ′ is applied to the liquid holding sheet 9 ′, and the liquid holding sheet 9 ′ and the heat generating composition 8 ′ are overlapped with each other, the heating device 2 and the final product can be manufactured without inhibiting the heat generation of the heating element 2. Contamination of a certain heating tool 1 with a chemical solution can be effectively prevented, and as a result, high-quality heating having both heating and functions other than heating without causing the disadvantages 1) to 3). The tool 1 can be provided stably.

  In particular, regarding the contamination by the chemical liquid of the manufacturing apparatus 30, the reversing roll 39 and each of the peripheral apparatus have a large holding angle of the reversing roll 39, so that contamination due to the adhesion of the chemical liquid W easily occurs. By applying the chemical solution to the liquid-holding sheet 9 ′ and superimposing, the contamination can be effectively prevented, and the chemical solution adhering to the upper roll 36 and the cutter roll 38 that is highly likely to come into contact with the chemical solution W is attached. Contamination due to can be effectively prevented.

  Further, in the present embodiment, since the chemical liquid W is applied using the contact-type chemical liquid application means 31, the chemical liquid W is accurately applied to the predetermined application scheduled position with a set application amount. It is possible to effectively prevent inconveniences such as contamination of the apparatus and deterioration of product quality due to scattering of the chemical liquid W during application. The manufacturing method of the heating tool of this embodiment is applicable to various chemical solutions.

  By the way, in the said embodiment, a chemical | medical solution is apply | coated to one surface of the strip | belt-shaped liquid holding | maintenance sheet | seat 9 'using the contact-type chemical | medical solution application means 31, and using the non-contact type | mold application means provided with the nozzle 41 separately. In this case, the aqueous electrolyte solution was applied to the single-layer laminated body precursor 10, but instead of this, a mixed solution of the chemical solution and the aqueous electrolyte solution was formed on one surface of the liquid holding sheet 9 ′ using the chemical solution application unit 31. May be applied. In that case, the discharge of the electrolyte aqueous solution using the nozzle 41 can be omitted.

  When the application of the mixed liquid to the belt-like liquid holding sheet 9 ′ is adopted, the liquid mixture of the chemical liquid and the aqueous electrolyte solution is applied to one surface of the belt-like liquid holding sheet 9 ′ using the chemical liquid coating means 31. After coating, the belt-like liquid-retaining sheet 9 ′ and the belt-like exothermic composition 8 ′ are overlapped so that the one surface (mixed liquid application surface) of the liquid-retaining sheet 9 ′ faces the heat-generating composition 8 ′. When combined with the belt-shaped laminate precursor 10 ′, the aqueous electrolyte solution applied to the liquid retaining sheet 9 ′ is transferred to the exothermic composition 8 ′, whereby the aqueous electrolyte solution is applied to the exothermic composition 8 ′. That is, the aqueous electrolyte solution is indirectly applied to the exothermic composition 8 ′ via the liquid-holding sheet 9 ′, whereby the exothermic composition 8 ′ becomes a belt-like exothermic body containing the aqueous electrolyte solution. The effect similar to that of the above-described embodiment in which both liquids are applied separately can also be obtained by applying the liquid mixture of the chemical solution and the aqueous electrolyte solution.

  As mentioned above, although this invention was demonstrated based on the preferable embodiment, this invention is not restrict | limited to the said embodiment. For example, in the above-described embodiment, the belt-shaped laminated body precursor 10 ′ is formed by superimposing the belt-shaped liquid heating composition 8 ′ and the belt-shaped liquid retaining sheet 9 ′. Alternatively, a plurality of strip-shaped exothermic compositions 8 ′ and a strip of liquid-retaining sheet 9 ′ may be overlapped to form a strip-shaped laminate precursor 10 ′. In that case, the heating element 2 in the finally obtained heating tool 1 has a laminated structure in which a plurality of exothermic compositions 8 are laminated.

  Moreover, in the said embodiment, the sheet | seat material 6 which forms a ventilation surface is arrange | positioned in the side (relatively far side from the chemical | medical solution containing sheet | seat 3) relatively close to the heat generating body 2, and the sheet | seat material which forms a non-ventilation surface 7 is arranged on the side relatively far from the heating element 2 (the side relatively close to the chemical liquid-containing sheet 3), but the arrangement of the sheet materials 6 and 7 may be reversed. That is, the first surface 11 of the container 5 may be a non-ventilated surface and the second surface 12 may be a vented surface. Further, the sheet material 7 may be a breathable sheet similarly to the sheet material 6.

DESCRIPTION OF SYMBOLS 1 Heating tool 2 Heat generating body 3 Chemical solution impregnation sheet | seat 4 Laminate body 5 Housing | casing body 6,7 Sheet material 8 Heat generating composition 9 Liquid retention sheet 10 Laminate body precursor 11 The 1st surface 12 of a heating tool 2nd of a heating tool Surface 30 Heating device manufacturing apparatus 31 Application means 33 Coater head 35 Integration means 38 Cutter roll 40 Conveying belt 41 Nozzle W Chemical liquid

Claims (5)

Lamination of a heating element in which an aqueous electrolyte solution is contained in an exothermic composition containing an oxidizable metal, and a chemical solution-containing sheet obtained by impregnating a liquid-holding sheet with a chemical solution containing a lipophilic drug and a dissolving agent for the drug Body , and a container for housing the laminate, and the container accommodates the laminate in a space formed by joining the first sheet material and the second sheet material. A manufacturing method of
After applying the chemical solution to one surface of the belt-like liquid-holding sheet using a contact-type coating means, the liquid-holding sheet and the belt-like exothermic composition are placed on the one surface of the liquid-holding sheet. Are stacked so as to face the exothermic composition to obtain a band-shaped laminate precursor,
Cutting the strip-shaped laminate precursor to a predetermined length to obtain a single-layer laminate precursor, and applying the electrolyte aqueous solution to the single-layer laminate precursor to obtain the laminate;
Sandwiching the laminate between the strip-shaped first sheet material and the strip-shaped second sheet material, joining both sheet materials positioned around the laminate, and obtaining a heating device continuum;
Cutting the heating tool continuum into a predetermined length to obtain the heating tool. Lamination of a heating element in which an aqueous electrolyte solution is contained in an exothermic composition containing an oxidizable metal, and a chemical solution-containing sheet obtained by impregnating a liquid-holding sheet with a chemical solution containing a lipophilic drug and a dissolving agent for the drug Body , and a container for housing the laminate, and the container accommodates the laminate in a space formed by joining the first sheet material and the second sheet material. A manufacturing method of
After applying a liquid mixture of the chemical solution and the aqueous electrolyte solution to one surface of the belt-like liquid-holding sheet using a contact-type coating means, the liquid-holding sheet and the belt-like exothermic composition are obtained. A step of obtaining a strip-shaped laminate by superimposing the one surface of the liquid retaining sheet so as to face the exothermic composition ;
Cutting the strip-shaped laminate into a predetermined length to obtain the laminate of sheets; and
Sandwiching the laminate between the strip-shaped first sheet material and the strip-shaped second sheet material, joining both sheet materials positioned around the laminate, and obtaining a heating device continuum;
Cutting the heating tool continuum into a predetermined length to obtain the heating tool.   The method for manufacturing a heating tool according to claim 1, wherein the heat generating composition is a fiber sheet containing a fibrous material. The heat according to any one of claims 1 to 3, wherein the liquid retaining sheet is configured by a laminated sheet of a breathable sheet and a non-breathable sheet, and the chemical solution is applied to the breathable sheet side. Manufacturing method of the tool. Lamination of a heating element in which an aqueous electrolyte solution is contained in an exothermic composition containing an oxidizable metal, and a chemical solution-containing sheet obtained by impregnating a liquid-holding sheet with a chemical solution containing a lipophilic drug and a dissolving agent for the drug Body, and a container for housing the laminate, and the container accommodates the laminate in a space formed by joining the first sheet material and the second sheet material. A manufacturing apparatus that can be used for manufacturing
A contact-type coating means having a coater head that coats the coating liquid in contact with one surface of the liquid-holding sheet;
The liquid-holding sheet coated with the coating liquid by the coating means and the exothermic composition are stacked so that the one surface of the liquid-holding sheet faces the exothermic composition. and superposition means shall be the body,
Cutting means for cutting the strip-shaped laminate into a predetermined length to form the laminate of sheets;
A sheet material supply means for supplying the first sheet material and the second sheet material so that the laminated body is sandwiched; and a means for thermocompression bonding the two sheet materials at a predetermined location. Heating equipment manufacturing equipment.

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