JPH11128260A - Stretchable warming implement and manufacturing thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stretchable warming implement which is convenient, easy to handle and can give moderately controlled heat to a desired body spot such as a waist, especially whatever viable region in such a manner that a stretchable filiform or strip-like element fixes the warming implement aptly in place and, therefore, no longer requires a pressure-sensitive adhesive layer on the warming implement entailing no harmful effects. SOLUTION: A flat wrapping material consisting of a film-like or a sheet-like base material and a film-like or a sheet-like covering material has a stretchable filiform or a strip-like element 9 fixed in a specified position, so that a wrapping material assumes a shrunken form. This wrapping material is at least, partially air-permeable and encapsulates pieces of a powder-like or a paste-like pyrogenic composition alone or in an independent state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flat wrapping material in which a stretchable thread or band is fixed at a predetermined position to form the wrapping material in a contracted state. The present invention relates to an elastic heating tool which has an exothermic composition enclosed therein, has excellent elasticity and flexibility, and does not give a sense of incongruity when used, and a method for producing the same.

[0002]

2. Description of the Related Art In recent years, so-called disposable warmers (a kind of heating tool) include a film-like or sheet-like base material having air permeability or air-tightness, and a film-like or sheet-like covering material having air permeability. In flat packaging material consisting of
What has enclosed the exothermic composition which generates heat by an oxidation reaction is used widely.

[0003] Conventionally, this kind of heating equipment generally includes a heat-generating composition layer formed on a predetermined region of a film-like or sheet-like base material having air permeability, and then covering with a gas-permeable coating material. Further, thereafter, a method is employed in which the entire periphery of the base material and the coating material is sealed using heat sealing or a hot-melt adhesive.

The exothermic composition contains, in addition to metal powder such as iron powder and water, activated carbon for accelerating the exothermic reaction, and sodium chloride which destroys an oxide film on the surface of the metal powder to maintain the exothermic reaction. The exothermic composition is dropped on a base material.

[0005] The heating tool manufactured in this manner is generally formed in a flat rectangular shape, and a heat-generating composition is sealed in a packaging material surrounded by a sealing portion at the periphery thereof. The tool can be used in pockets, socks, or hand-held, but it can also be used by holding an adhesive layer on one side of this packaging material and directly attaching to underwear or the body surface Heating equipment that can be used is also used.

[0006]

However, in the case of a heating tool having no pressure-sensitive adhesive layer, it is necessary to use the heating tool in a pocket or hold it in a hand, which is inconvenient. Moreover, it is not suitable for applying heat to a desired portion such as a waist.

On the other hand, a heating tool provided with the pressure-sensitive adhesive layer is very convenient because it can be directly attached to underwear or a living body surface, but a part of the pressure-sensitive adhesive layer remains on the underwear or skin surface due to the heat. Cause dirty underwear,
May cause discomfort to the user.

[0008] In addition, the conventional heating tool lacks the flexibility of the packaging material, and the packaging material has almost no elasticity, causing a feeling of tension or discomfort during use. When the tool is used by sticking it to joints such as elbows, knees, ankles etc. with an adhesive layer, these joints have large irregularities, and the joints have large expansion and contraction,
The heating tool could not follow the movement of the joint, giving not only a stiff feeling to the user, but also the peeling of the attached heating tool as the movement of the joint overlapped.

By the way, the present inventor has recently used a thickened paste-like exothermic composition instead of a powdery exothermic composition, and the exothermic composition is transferred onto a base material, and There has been proposed a heating tool in which a coating material is covered and the base material and the coating material are sealed at the periphery of the heat-generating composition (Japanese Patent Application No. 8-177404).

When the paste-like heat-generating composition is used, the heat-generating composition is stabilized by excess water and free water in the heat-generating composition, and can be formed in an arbitrary pattern by printing or coating such as screen printing. Transfer and lamination on the base material become possible, and after this transfer and lamination, the excess moisture or free water is absorbed by the packaging material, that is, the base material and / or the coating material. In addition, the exothermic reaction can be made to proceed smoothly during use by setting the blending state to an optimal state.

However, even when the heating tool is formed into a thin shape using the paste-like heat-generating composition, the packaging material has almost no elasticity, and a feeling of tension or discomfort occurs during use. When the tool is used by sticking it to an indirect part such as an elbow, a knee, or an ankle with an adhesive layer, the same problem as described above occurs, such as peeling off from the skin.

In general, the pressure-sensitive adhesive layer does not have water absorbency, and when a heating tool is directly adhered to the skin for use, waste products such as sweat generated by sweating and the like are removed from the pressure-sensitive adhesive layer. Staying between the skin and becoming unsanitary,
This may cause skin irritation, such as the occurrence of Kayumi, and may not provide a satisfactory feeling of use.

The present invention has been completed in order to solve the above-mentioned technical problems. An elastic thread or band is fixed to a flat packaging material at predetermined intervals to form the packaging material. Formed in a contracted state, the powdered or paste-like heat-generating composition is singly contained in this packaging material, or a plurality of heat-generating compositions in an independent state are enclosed, so that convenience is good,
It is possible to give heat to desired places such as the waist,
In particular, since the stretchable thread-like or band-like body fixes the heating tool in a state that is perfectly adapted to any part of the living body, it is not necessary to provide the heating tool with an adhesive layer, and thus the heating tool is not provided with the adhesive layer. There is no harm, that is, for example, there is no residue of glue or stain of underwear, and it is sanitary, there is no skin irritation, and it is extremely safe. In addition to being extremely excellent in properties, it can be perfectly fixed to uneven parts and joints such as elbows, knees, ankles and the like in the living body, and despite the joints having large irregularities and large joint expansion and contraction,
Since the heating tool can sufficiently follow the movement of the joints, the user feels a satisfactory feeling of use without giving the user a feeling of tension or discomfort, and furthermore, an elastic heating tool that does not peel off during use. And a method for producing the same.

[0014]

SUMMARY OF THE INVENTION In order to achieve the above object, a stretchable heating tool according to the present invention has a flat package comprising a film-like or sheet-like base material and a film-like or sheet-like covering material. A stretchable thread or band is fixed to a predetermined position on the material, and the packaging material is formed in a contracted state. At least a part of the packaging material has air permeability, and Is characterized in that a plurality of powdered or pasty exothermic compositions are enclosed singly or independently.

That is, the heating tool according to the present invention is formed by forming a flat packaging material having at least a part of air permeability in a state in which the packaging material is contracted by a stretchable thread or band. The material is characterized in that a plurality of exothermic compositions in powder or paste form are enclosed singly or independently.

The method of fixing the stretchable thread or band to the packaging material is not particularly limited. Specifically, for example, the stretchable thread or band may be fixed to the packaging material, ie, the base material or the base material. It may be fixed to the covering material by a fixing means such as fusion, adhesion or sewing, and in this case, the whole stretchable thread or band, or both ends or part of the entire stretch is fixed. What is necessary is just to fix by means.

As this stretchable thread or band, the heating tool is shrunk when not in use, and easily stretched when in use,
In addition, it is not particularly limited as long as it has a stretching force enough to fix the heating tool to the application site of the living body, but it is generally about 5 mm or less, preferably 0.5 to 0.5 mm in diameter.
A 3 mm thread-like body or a band having a width of about 0.5 to 20 mm and a thickness of about 0.1 to 5 mm can be used.

Further, this stretchable thread or band is
What is necessary is just to fix it to the reinforcing material by fixing means such as bonding or sewing to a predetermined surface of the expanded packaging material in a state where the reinforcing material is stretched as described above.

In the present invention, as the heat-generating composition, not only a powdery one but also a paste-like one can be used.

The exothermic composition in powder form includes a known exothermic composition, that is, an exothermic substance such as a metal powder essential for an exothermic reaction, moisture, a carbon component for promoting heat generation, and a metal powder surface. Oxidation reaction of metal powder by eliminating metal chloride and stickiness based on water, which breaks down oxide film of metal and sustains oxidation reaction (exothermic reaction) of metal powder, and gradually releases water required for the reaction And a water-retaining agent for maintaining the water content as an essential component, and if necessary, a compounding agent such as a pH adjuster, a surfactant for improving dispersibility, and an antifoaming agent.

In the present invention, the exothermic substance is not particularly limited as long as it is a substance that generates heat by reacting with oxygen in the air, and specifically, for example, iron powder, zinc powder, aluminum powder, etc. Metal powders such as metal powders, alloy powders composed of two or more of these metals, or mixed powders obtained by mixing two or more of these metals, are particularly preferred among these metal powders. It is recommended to use the most excellent iron powder from the viewpoints of handling, cost, storage stability and safety.

The carbon component is a substance that adsorbs air and activates oxygen in the air to promote an oxidation reaction with a heat-generating substance. Specific examples thereof include carbon black, graphite, and activated carbon. It is listed as
Further, as the metal chloride, sodium chloride, alkali metal chloride such as potassium chloride, calcium chloride,
Metal chlorides of chlorides of alkaline earth metals such as magnesium chloride are mentioned as examples.

The water retention agent is not particularly limited as long as it absorbs water. Specific examples include starch-polyacrylonitrile copolymer, cross-linked polyalkylene oxide, and vinyl ester-ethylene. Unsaturated carboxylic acid copolymerized ken compound, self-crosslinked polyacrylate, reaction product of a polyvinyl alcohol-based polymer and a cyclic anhydride, polyacrylate crosslinked product, sodium polyacrylate, polyvinyl alcohol, polyvinylpyrrolidone,
Gum arabic, hydroxyethyl cellulose, methyl cellulose, pectin, carboxyvinyl polymer, gelatin, polyethylene oxide, dextrin, pregelatinized starch, starch-based water retention agents such as processing starch, sodium alginate, carrageenan, polysaccharide-based water retention agents such as agar, carboxy 1 selected from a cellulose derivative-based water retention agent such as methylcellulose (CMC), ethyl acetate, hydroxypropyl cellulose, an acrylic resin-based water retention agent, a water-soluble cellulose ether or a urea resin-based water retention agent;
Species or a mixture of two or more species.

The water retention agent is preferably one which has good solubility or dispersibility in water or an aqueous solution of a metal chloride, does not cause discomfort, is stable, and hardly perishes. From the viewpoint of material management, those having excellent stability and handleability are preferable.

The following are examples of the exothermic composition in powder form used in the present invention. In other words, as the exothermic composition, the exothermic temperature is not less than the degree that a thermal effect can be obtained,
It is preferable to control the temperature to a level that does not cause a low-temperature burn. Further, from the viewpoints of safety and handling, iron powder is preferable as the metal powder, and iron powder, activated carbon, carbon black or carbon such as graphite is preferable. In general, the compounding ratio of the component, metal chloride, water and water retention agent is 25 to 70% by weight of iron powder,
It is preferable that the carbon component is 1 to 15% by weight, the metal chloride is 0.5 to 10% by weight, the water is 10 to 40% by weight, and the water retention agent is 0.5 to 10% by weight.

The exothermic composition may further contain, if desired, wood flour, a surfactant, a pH adjuster, an inorganic water retention agent such as vermiculite, diatomaceous earth or perlite, and a humectant such as glycerin. The mixing ratio of these is 0.5 to 10 parts by weight of wood powder, 0.05 to 7.5 parts by weight of a surfactant, and 0.01 to 7.5 parts by weight of a pH adjuster based on 100 parts by weight of iron powder. It is preferable that the content is 0.5 to 10 parts by weight of an inorganic water retention agent and 0.5 to 10 parts by weight of a humectant.

Next, the paste-like exothermic composition will be described. The paste-like heat-generating composition is not particularly limited as long as it is composed of a component that reacts with oxygen in the air to cause an exothermic reaction and has a property of flowing when an external force is applied. It is not particularly limited as long as it can be transferred and laminated by printing, coating, or the like, and the paste-like heat-generating composition is, in each of its constituent components, a water- and water-absorbing polymer and a thickener, It is obtained by adjusting the mixing ratio with other components.

As described above, when the paste-like heat-generating composition is used, transfer and lamination by printing such as screen printing or coating can be extremely easily performed, and at the same time, an ultra-thin elastic heating tool can be manufactured at high speed. Moreover, the exothermic composition can be accurately and evenly distributed at a predetermined position of the packaging material.

This paste-like heat-generating composition contains water, a water-absorbing polymer, a thickener, and other components, ie, a heat-generating substance essential for an exothermic reaction, as well as carbon and activated carbon for promoting heat generation. Carbon components, metal chlorides that destroy the oxide film on the surface of the metal powder and continuously generate an exothermic reaction as an essential component, and if desired, inorganic or organic water retention agents, pH adjusters, A surfactant and an antifoaming agent for improving dispersibility are blended and formed into a paste as a whole.

The proportion of the exothermic composition varies depending on the type of the water-absorbing polymer and the thickener used, the type of the exothermic substance, the type of the carbon component, the type of the metal chloride, and the like. 0.1 to 7.5 parts by weight of a water-absorbing polymer and / or 0.1 to 1 part of a thickener per 100 parts by weight.
It is preferably in the range of 0 parts by weight, 1.5 to 20 parts by weight of a carbon component and 1 to 10 parts by weight of a metal chloride. In particular, water is added to this mixture to form a paste as a whole. In this case, a predetermined amount of the metal chloride may be dissolved or dispersed in water, and this may be added to a mixture of a water-absorbing polymer, a thickener, and a carbon component to form a paste as a whole. .

The viscosity (at a temperature of 20 ° C.) of this paste-like exothermic composition is generally from 10,000 to 10,000 in the following manner.
It is desirable to be in the range of 9,500,000 cps.

The viscosity of the paste-like exothermic composition is 10.0 or less.
If the heat generation composition is too low, ie, less than 00 cps, the transfer properties of the heat-generating composition due to printing, coating, and the like may deteriorate, or the amount of other components may be insufficiently transferred due to an excessive amount of moisture, and the heat generation time may be shortened. In addition, it is necessary that the paste-like heat-generating composition oozes out of a predetermined region on the substrate, or that a large amount of water is absorbed by the substrate and / or the coating material after the transfer. This is not preferable because a specially-structured base material and / or coating material must be used, and the structure of the heating tool must be complicated. On the other hand, if it exceeds 9,500,000 cps, the transferability is deteriorated, and the transfer amount may vary, or an exothermic reaction may occur on the surface. Therefore, for these reasons, 50,000-8,000,000
000 cps, particularly preferably 75,000 to
It is desirable to be in the range of 7,500,000 cps.

This viscosity is determined by using TOKIMEC INC. (VISCOMTER BH type viscometer) and #
7 is a value measured at a measurement temperature of 20 ° C. using a beaker having a beaker inner diameter (85 mm) at a rotation speed of 2 rpm using a rotor of No. 7.

Further, in the paste-like exothermic composition,
As described above, the moisture and the water-absorbing polymer and the thickener can obtain the desired heat-generating properties even with other components, that is, those made of a heat-generating substance or a carbon component or a metal chloride.
In order to further improve the temperature stability and further improve the heat generation time, an inorganic or organic water retention agent, a pH adjuster, a surfactant for improving dispersibility, and an antifoaming agent may be further provided, if desired. And the like, and a paste formed as a whole is also useful.

That is, based on 100 parts by weight of the heating substance, 0.1 to 7.5 parts by weight of the water-absorbing polymer and / or 0.1 part by weight of the thickener.
5 to 10 parts by weight, carbon component 1.5 to 20 parts by weight, metal chloride 1 to 10 parts by weight, inorganic or organic water retention agent 0.1 to 5 parts by weight, and defoamer 0.1 to 5 parts It is preferably in the range of parts by weight, and water is added to this mixture to form a paste as a whole. In this case, a predetermined amount of a metal chloride is dissolved or dispersed in water, and this is dissolved in a heating substance, a water-absorbing polymer and / or a thickener, a carbon component, an inorganic or organic water retention agent, and a pH adjuster. In addition to the mixture consisting of the surfactant and the defoamer, it may be formed into a paste as a whole.

The water-absorbing polymer mainly includes
Polymer materials that absorb water and metal chloride aqueous solutions smoothly and in large amounts can be mentioned. Specifically, for example, starch-polyacrylonitrile copolymer, cross-linked polyalkylene oxide, vinyl ester-ethylene-based copolymer Saturated carboxylic acid copolymerized ken compound, self-cross-linked polyacrylate, reaction product of polyvinyl alcohol-based polymer and cyclic anhydride, polyacrylate cross-linked, N-vinylacetamide cross-linked (water absorbing agent) (Showa Denko Product name NA-
010) and the like, or a mixture of two or more kinds selected from the above. Further, these may be treated with a surfactant or may be combined with a surfactant to improve the hydrophilicity. It is. Some of these water-absorbing polymers have a function of smoothly absorbing a large amount of water or an aqueous solution of a metal chloride.

The water-absorbing polymer used in the present invention may be a commercially available polymer, for example, Sanwet IM-300 or Sanwet IM-300MP manufactured by Sanyo Chemical Industries, Ltd.
S, Sunwet IM-1000, Sunwet IM-
300MS, Sunwet IM-1000MPS, AquaKeep 4S and AquaKeep 4SH manufactured by Iron and Steel Chemical Co., Ltd., Sumikagel N-1040, Sumikagel MP manufactured by Sumitomo Chemical Co., Ltd.
Examples thereof include K-1 gel 201-K and K1 gel 201-F2 manufactured by Kuraray Co., Ltd., Arasorp 800 and Arasorp 800F manufactured by Arakawa Chemical Co., Ltd., and the like.

Among these commercially available water-absorbing polymers, Sanwet IM-300MPS and Sunwet manufactured by Sanyo Chemical Co., Ltd., which rapidly absorb an aqueous solution or dispersion of water or metal chloride and have a high absorption amount. IM-1000M
PS, Sumikagel N-1040 and Sumikagel MP-1040 manufactured by Sumitomo Chemical Co., Ltd., K1 gel 201- manufactured by Kuraray Co., Ltd.
K and K1 gel 201-F2, Arasoap 800 manufactured by Arakawa Chemical Co., and the like are particularly preferable.

Examples of the thickener include substances that absorb water or an aqueous solution or dispersion of metal chloride to increase the viscosity or impart thixotropic properties. Examples of the thickener include bentonite and stearic acid. Salts, polyacrylates such as sodium polyacrylate, gelatin, polyethylene oxide, polyvinyl alcohol, polyvinylpyrrolidone, gum arabic, tragacanth, alginate such as locust bean gum, guar gum, gum arabic, sodium alginate, pectin, carboxyvinyl polymer Dextrin, pregelatinized starch, starch-based water-absorbing agents such as starch for processing, carrageenan, polysaccharide-based water retention agents such as agar, CMC, ethyl acetate, hydroxyethylcellulose, methylcellulose or hydroxypropylcellulose Cellulose derivatives thickener, an acrylic acid polymer material (e.g., Nippon Shokubai Co., Ltd., trade name: CS-6HS), selected from water-soluble cellulose ethers or poly -N- vinylacetamide, etc. 1
Species or a mixture of two or more species.
These may be treated with a surfactant or may be combined with a surfactant to improve the hydrophilicity. These thickeners have, as a surface, a function of absorbing water or an aqueous solution of a metal chloride to increase the consistency or impart thixotropic properties.

As the water-soluble cellulose ether,
Specifically, for example, methyl cellulose obtained by etherifying cellulose with a methoxyl group (manufactured by Shin-Etsu Chemical Co., Ltd.
Product name: Metroze SM15, Metroze SM25, Metroze SM400, Metroze SM4000, etc.),
Hydroxypropyl methylcellulose obtained by etherifying cellulose with a hydroxypropoxyl group (trade names: Metrolose 60SH-50, Metrolose 60SH-4000, Metrolose 90SH-40, manufactured by Shin-Etsu Chemical Co., Ltd.)
00, Metros 90 SH-30000, Metros 9
Water-soluble cellulose ether such as hydroxyethyl methylcellulose obtained by etherifying cellulose with a hydroxyethoxyl group (Shin-Etsu Chemical Co., Ltd., trade name: Metroze 60SH-50,
Metroose 60AH-4000, Metroose 90SH-
4000, Metrolose 90SH-30000, Metrolose 90SH-100000, etc.).

In the present invention, examples of the inorganic or organic water retaining agent include inorganic water retaining agents such as vermiculite, diatomaceous earth and perlite, and the above-mentioned organic water retaining agents and wood flour. As the adjusting agent, surfactant or defoaming agent, those conventionally used can be mentioned.

The substrate and the covering material used in the present invention are not particularly limited as long as they are in the form of a film or a sheet, and the two are basically the same.

As the base material and the coating material, specifically, for example, a natural material such as a synthetic resin film or sheet, a porous film or sheet, a foamed film or sheet, or a natural fiber or a viscose fiber is used. Papers, woven fabrics, knitted fabrics, nonwoven fabrics, and the like formed of recycled fibers, semi-synthetic fibers, synthetic fibers, or a mixture of two or more of these fibers are included. Further, Japanese Patent Application No. 8-177404.
And those described in the specification of the above item.

The substrate and / or coating material used in the present invention are roughly classified into those having water absorbency and those having no water absorbency, and any of them can be used.

In the present invention, when the paste-like heat-generating composition is laminated on a substrate by a method such as screen printing or printing or transfer, the heat-generating composition can be accurately laminated at a predetermined position. The paste-like exothermic composition has significantly improved stability in the air as compared with the powdery exothermic composition.

The method of laminating the paste-like heat-generating composition on the base material is not particularly limited. For example, printing is performed by using a printing technique such as thick coating printing, gravure printing, offset printing, screen printing, spraying, or the like. Coater,
It is desirable to apply, coat, or transfer with a roller, an applicator, or the like.

In the exothermic composition in powder form, water optimal for the exothermic reaction is blended, and a barrier layer based on free water or excess moisture is formed on the surface of metal powder, for example, on the surface of iron powder. In addition, since it is porous, it has good contact with air, and the exothermic reaction proceeds smoothly and continuously immediately.

As a result, after the exothermic composition is blended, an exothermic reaction occurs until a heating tool is manufactured and sealed in a non-breathable outer bag, resulting in a loss due to the exothermic reaction and a decrease in the exothermic composition. In addition to the decrease in quality, the product generated by the exothermic reaction solidifies and various adverse effects, such as a decrease in yield, difficulty in handling, complicated maintenance of the manufacturing equipment, the operating time of the manufacturing equipment or the employment of workers. There may be restrictions on time and adverse effects such as difficulty in coagulation treatment.

However, when a paste-like exothermic composition is used, the free water and excess water in the exothermic composition form a barrier layer, so that the amount of supplied air is reduced and the exothermic reaction is substantially stopped. In addition, heat loss at the time of production, deterioration of the quality of the heat-generating composition, and various adverse effects associated with solidification of the heat-generating composition can be reliably prevented.

When free water or excess moisture forms a barrier layer in the paste-like exothermic composition, a part of the moisture of the paste-like exothermic composition is used as a base material and / or a coating material. Absorption by the water absorbing layer formed on the bag material or the base material and / or the coating material causes the loss of the barrier layer, and furthermore, the exothermic composition becomes porous and the surface area increases, and the contact with air is good. And the adverse effects associated with free water and excess water are eliminated.

As the substrate and / or coating material having water absorption, the substrate and / or coating material is formed of a water absorbing material having water absorption, or the substrate and / or coating material itself is water absorbing. Irrespective of whether or not it has the property, a water-absorbing layer is formed on the contact surface with the paste-like heat-generating composition.

Examples of the water-absorbing material include foamed film and sheet having water absorption, paper, cardboard such as corrugated paper and corrugated cardboard, non-woven fabric, woven fabric, and porous film sheet. Examples of the water-absorbing layer include a water-absorbing foamed film / sheet, paper, cardboard such as corrugated paper and corrugated cardboard, a nonwoven fabric such as rayon nonwoven fabric, a woven fabric, or a porous film formed on a substrate and / or a coating material. For layers such as high quality films and sheets, or substrates and / or coating materials,
A layer in which a water absorbing agent is added, impregnated, kneaded, laminated, transferred or carried to impart or increase the water absorbing property.

The base material and / or the coating material include a single layer and a laminate of two or more layers of the same or different types.

When the base material and / or the coating material are a single layer, there are non-breathable ones and breathable ones. And those formed of a permeable or breathable film or sheet.

In addition, even when the base material and / or the coating material are formed of a laminated film or sheet having two or more layers, there are a non-breathable material and a breathable material. Specifically, for example, in the above-described non-breathable or breathable film or sheet, the same type or two or more types of films or sheets may be laminated. At this time, when laminating the same type or two or more types of films or sheets, it is preferable to form a plurality of layers in consideration of flexibility, strength, texture, fixability of the heat generating composition, and the like.

In the present invention, at least a part of the packaging material, that is, at least one or a part of the base material and the coating material needs to have air permeability.

When at least one or a part of the base material and the coating material has air permeability, the air permeability greatly affects the control of the reaction rate or the exothermic temperature of the exothermic composition. In order to obtain an effect and to prevent low-temperature burns and ensure safety, it is preferable to manage the air permeability.

In order to control the air permeability with high accuracy, it is preferable to control the air permeability of the film or sheet by the moisture permeability. Specifically, the moisture permeability is controlled by the Lissi method (Lyssy method L80-4000H). Type) 50-1
Should be in the range of 000 g / m ² · 24 hr,
In particular, it is preferable to be in the range of 100 to 1,500 g / m ² · 24 hr.

When the base material and / or the coating material are composed of a plurality of layers of a breathable film, the moisture permeability as a whole is determined to be 50 to 10,000 g / m by the Lissy method (Lyssy method).
Is preferably in the range of ² · 24 hr or.

When the water vapor transmission rate is less than 50 g / m ² · 24 hr, the calorific value becomes small and a sufficient heating effect cannot be obtained, which is not preferable. On the other hand, 10,000 g / m ² · 2.
Exceeding 4 hours is not preferable because the heat generation temperature becomes high to cause a problem in safety and a possibility that heat generation time may be shortened. Therefore, the moisture permeability of the breathable film is 100 to
A range of 1,500 g / m ² · 24 hr is particularly preferable because a safe and sufficient heating effect can be obtained for a long time.

Incidentally, the Lissi method (Lyssy method) is a method based on industrial standards in various countries around the world.
In SZ0208, a temperature of 40 ° C. and a relative humidity difference of 90% R
H, it is set to 10
A measurement sample is inserted into the boundary between the lower chamber in a state of 0% relative humidity and the upper chamber in which a highly sensitive humidity sensor is installed, and the relative humidity of the upper chamber with the humidity sensor is adjusted to 10% RH (100% -90). %), And about ± 1% width (△ RH)
That is, the time required for the humidity to increase from about 9% to about 11% (several seconds) is measured and compared with the result of calibration performed under the same conditions using a standard sample whose transmittance is known in advance, thereby transmitting the light. This is a method for obtaining degrees.

Since the air permeability has a great influence on the control of the reaction rate or the exothermic temperature of the exothermic composition, it can be applied to, for example, feet, shoulders or hips, or to the form of use, for example, directly applied to a living body. Wear or use it, apply it to the outside of underwear, etc., use it in a pocket of clothing, etc.In addition, consider whether the exothermic composition does not leak during use, etc. In order to obtain an effective heating effect and to prevent low-temperature burns and ensure safety, it is appropriately determined empirically.

The thicknesses of the base material and the coating material vary greatly depending on the application and are not particularly limited. Specifically, for example, the thickness is 5 to 5000 μm, and particularly, the required mechanical strength is obtained. Generally, about 10 to 1000 μm, particularly 1
More preferably, it is 5 to 500 μm.

When the thickness of the base material and the thickness of the coating material are less than 5 μm, it is not preferable because necessary mechanical strength cannot be obtained, and a uniform material may not be easily obtained.

On the other hand, the thickness of the base material and the coating material is 5000 μm.
If it exceeds m, it is difficult to form a wrapping material, that is, a base material and a coating material in a contracted state with a stretchable thread or band, even if the foam is a foam such as a sponge. In addition, in the case of a heating tool using a stretchable thread or band having a stretching strength enough to shrink a packaging material having a thickness greater than or equal to the thickness, when the heating tool is attached to a living body, the fastening to the living body is difficult. It is not preferable because it is tight and the feeling of use is poor.

The substrate and / or the covering material are formed in a state of being contracted by a stretchable thread or band fixed to the substrate. The shape in the contracted state is not particularly limited, and examples thereof include a folded shape and a contracted state without any regularity.

Incidentally, in the present invention, the base material and / or
Or, the coating material, in particular, the base material and the coating material are preferably formed of an extensible material, particularly an elastic material, and are more preferably applied to a curved part, an elastic part, and a bending part of a human body, and moreover, In order for the expansion and contraction to more easily follow the bent and stretched portions, the base material and the covering material, that is, the packaging material of the heating element, are preferably formed of an extensible film or sheet, particularly, an extensible film or sheet. .

In the elastic heating tool according to the present invention,
An elastic thread or band is fixed to a flat packaging material formed of a base material and a coating material at predetermined intervals to form the packaging material in a contracted state, and at least a part of the packaging material is formed. It is characterized in that it has air permeability, and a plurality of powdery or paste-like heat generating compositions are enclosed in the packaging material alone or independently.

The stretchable thread or band is not particularly limited as long as it is formed of a stretchable material. Specifically, for example, natural rubber or synthetic rubber may be used. What was formed is mentioned.

In the elastic heating tool according to the present invention,
Although the form is not particularly limited, in particular, it is a tubular or L-shaped tube so that it can be easily attached to a joint, a thigh, a calf, a belly, a waist, a knee, an elbow, a wrist or an ankle, and used. It is desirable that it be formed in a shape or other shape.

Specifically, for example, an elastic heating tool can be used in the form of an ear cover, a sock, a cover from a toe to an ankle, a glove, a hood (a hair cap), a crotch portion to a butt portion. Up to a cover shape, a backrest shape, a shape to be attached to winter clothes, or a heat-insulating pad for breast milk.

Next, a method of manufacturing the elastic heating tool according to the present invention will be described. The elastic heating tool according to the present invention is suitably manufactured by the following method. That is, in the method for manufacturing the elastic heating tool according to the present invention, first, at least a part of one or both of the film-like or sheet-like base material and the coating material has air permeability, and this base material or A step of extending the covering material and fixing the stretchable thread or band to the one or both of the substrate and the covering material in the stretched state along the predetermined position in a stretched state ( Perform A).

Specifically, for example, on a production line before laminating the exothermic composition on the substrate, the film-like or sheet-like substrate and the coating material are sent out by the respective transport rollers in a stretched state. At the same time, the stretchable thread or band is sent out in an extended state along a predetermined position on one or both of the base material and the coating material.

Next, on the rear line, the stretchable thread-like body or the belt-like body is partially fixed along the predetermined position along the entirety, both ends or the entirety by the fixing means. The base material and the coating material are sent out to a production line further rearward in a stretched state.

Of course, in manufacturing the elastic heating tool of the present invention, one or both of a film-like or sheet-like base material and a coating material which have been previously stretched are stretched along a predetermined position. It is also possible to use a filament or a band which is fixed in an extended state, or to send the substrate and the coating material onto a production line in a state of being stretched.

The fixing means may vary depending on the material of the stretchable thread or band, the base material and the coating material, and specific examples thereof include, for example, fusion, heat bonding with a hot-melt adhesive, and thread. And the fastening with a base material and a covering material, and the like. One or more of the stretchable thread or band is fixed to the base material and / or the covering material at a predetermined interval. is there.

The stretchable thread or band is used as a substrate and / or
Alternatively, in fixing a plurality of stretchable filaments or strips to the covering material at predetermined intervals, the interval between adjacent stretchable filaments or strips is not particularly limited according to the application of the stretchable heating tool, It may be appropriately determined from the range of 1 to 50 mm according to the stretching force of the thread or the band.

By the way, in the method for manufacturing a stretchable heating tool according to the present invention, as described above, the stretchable thread or band is fixed to the stretched base material and / or covering material in an extended state. In place of this, a band-shaped woven fabric, a knitted fabric or a non-woven fabric, or a band-shaped synthetic resin film or sheet is used as a reinforcing material, and the reinforcing material is stretched. The reinforcing member is contracted by fixing the body or the strip in an extended state, and the reinforcing member is stretched, and the expanded member is fixed to the expanded base material and / or the covering member by the fixing means. Is also good.

In other words, since the stretched thread or band is fixed and fixed to the stretched base material and / or covering material in a state where the reinforcing material is stretched and stretched, the base material and / or the coating material are fixed. Or the coating material is in a contracted state.

In this step (A), when a plurality of stretchable filaments or strips are fixed to the packaging material, that is, the base material and / or the coating material, a plurality of stretchable filaments or strips may be provided in parallel at appropriate intervals. Alternatively, a stretchable thread or band may be arranged in a grid and fixed.

When a stretchable thread or band is fixed to the reinforcing material fixed to the base material and / or the covering material, a plurality of the stretchable thread or band are arranged in parallel at appropriate intervals. The reinforcing material thus obtained may be provided in parallel on the base material and / or the coating material at appropriate intervals, or may be fixed in a grid pattern. .

With this configuration, the packaging material, that is, the base material and / or the covering material, can be expanded or contracted so as to be able to contract or expand in one direction or the surface direction.

As the stretchable thread or band, those described for the stretchable heating tool according to the present invention can be used.

This elastic heating tool generates heat when the heat-generating composition inside it comes into contact with air.
Therefore, at least a part of one or both of the base material and the coating material needs to have air permeability. That is, one or both of the base material and the coating material may have air permeability, and at least a part of one or both of the base material and the coating material may have air permeability.

Next, a step (B) of laminating a paste-like or powder-like exothermic composition on at least one predetermined region on the upper surface of the stretched substrate is performed.

In this step (B), the stretched substrate refers to a state where the stretchable thread or band is not attached to the substrate and the substrate is spread.
On the other hand, when a stretchable thread or band is attached to the base material, it refers to a state where the base material is extended and spread.

The method of laminating the paste-like heat-generating composition on the base material is not particularly limited. For example, printing is performed by using a printing technique such as thick coating printing, gravure printing, offset printing, screen printing, spraying, or the like. Coater,
It is desirable to apply, coat, or transfer with a roller, an applicator, or the like.

The method for laminating the heat generating composition in powder form on the substrate is not particularly limited.
Conventionally known methods such as dropping and throwing are used.

By the way, in this step (B), when the paste-like or powder-like heat generating composition is laminated on the upper surface of the stretched base material, the heat generating composition is used alone or plurally in an independent state. Is done.

In the present invention, further, a covering material extended so as to cover the exothermic composition is covered, and the base material and the covering material are sealed around the outer periphery of the exothermic composition,
The step (C) of shrinking the packaging material, that is, the base material and the coating material, with the stretchable thread or band is performed.

In this step (C), the covering material in the stretched state refers to a state where the covering material is spread when the stretchable thread or band is not attached to the base material. When a stretchable thread or band is attached to a substrate, it refers to a state in which the covering material is extended and spread.

In this step (C), the method for sealing the base material and the coating material is not particularly limited, but specific examples thereof include methods such as adhesion, heat bonding, and fusion. Is mentioned.

In this step (C), the packaging material,
That is, the base material and the covering material are shrunk by the stretchable thread or band.

Thus, a sheet-like elastic heating tool is obtained. This stretchable heating tool may be used as it is, but furthermore, the heating tool is folded back to seal a predetermined portion, and is shrunk by the stretchable thread or band to obtain a three-dimensional structure. A stretchable heating tool in the shape is obtained.

In this case, for example, the elastic heating tool is cut into a predetermined shape, and then, on a manufacturing line at the rear, it is turned back, and both ends are appropriately joined to form a desired tubular shape or L-shaped tubular shape. Or formed in a bag shape of a desired shape.

Specifically, for example, in the above-described method for manufacturing an elastic heating tool, the obtained elastic heating tool is folded back to seal a predetermined portion, and is also shrunk by an elastic thread or band. By doing so, joints, thighs,
It is desirable to form it into a tubular shape or an L-shaped tubular shape so that it can be used by being attached to a calf, belly, waist, knee, elbow, wrist, ankle, or the like for the following reasons.

As described above, the elastic heating tool is made cylindrical or L-shaped.
When it is formed in a shape of a cylindrical shape, it is extremely easy to attach and detach it to and from the living body, and it is possible to make joints, thighs, calves, belly, waist,
When used by being attached to the knee, elbow, wrist or ankle, etc., the tightening to the living body by the elastic thread or band is moderate, and the elastic heating tool is fixed to the living body,
The elastic heating tool does not shift during use and can be used comfortably.

[0098] In the above-mentioned method for producing a stretchable heating tool, the obtained stretchable heating tool is folded and sealed at a predetermined location, and is contracted by a stretchable thread or band to form an ear cover. Socks, covers from toes to ankles, gloves, hoods (hair caps), covers from crotch to hips (for example, pants), backrests, winter clothes It is desirable to form it into a mounting shape or a heat-insulating pad for breast milk for the following reasons.

With this configuration, the ears, feet,
It is extremely easy to attach to the parts such as the hand, head, crotch area, buttocks area, and backrest, and to the warm clothing or the warming pad for breast milk.

The various heating tools of the present invention obtained in this way can not only provide the human body with heat in the winter to survive the cold and comfortably, but also provide local dust, pain and coldness. For example, it is used for diseases such as stiff shoulder, muscle pain, muscle stiffness, low back pain, cold limbs, neuralgia, rheumatism, bruising, sprains, etc., and a sufficient therapeutic effect by heat can be obtained.

Further, as a result of extremely excellent elasticity and flexibility with respect to the movement of a living body such as a joint, there is no sense of incongruity at the time of use. Since it has a soft holding power, there is no need to fix it to the skin or clothes with an adhesive layer or the like, and it can be properly adhered to the living body with a stretchable thread or band. This does not affect the moisture permeability of the packaging material, so that stable heat can be obtained without causing low-temperature burns.

[0102]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be specifically described below with reference to the drawings, but the present invention is not limited to these embodiments.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the following embodiments are exemplifications for making the configuration of the present invention easier to understand, and the present invention is not limited to these embodiments.

FIG. 1 is a view showing an example of the manufacturing process of the elastic heating tool according to the present invention. In the manufacturing process shown in FIG. There is a step of encapsulating and a step of fixing the stretchable thread or band 9 on the upper surface of the covering material 21.

The elastic heating tool A according to the present invention comprises a flat wrapping material 50 comprising a film-like or sheet-like base material 22 and a film-like or sheet-like covering material 21 and a stretchable thread-like or band-like material. The body 9 is fixed to a predetermined position to form the packaging material 50 in a contracted state, at least a part of the packaging material 50 has air permeability, and the packaging material 50 has a powdery or paste-like shape. The heat-generating composition, in this case, a paste-like heat-generating composition M described later, which is singly or plurally enclosed in an independent state.

This base material 22 is made of a non-breathable polyethylene film having a thickness of 40 μm, and is provided on one surface thereof with a polyester nonwoven fabric containing a water-absorbing polymer (a thickness of 210 μm manufactured by Sanyo Chemical Co., Ltd. IM-5000MPS 10 g / m ² ), and a rayon / polyester mixed nonwoven fabric (thickness: 140 μm) having a rayon fiber content of 60% by weight was used on the other surface.

The base material 22 is provided below the start position of the production line in the state of the wound body 22A.
It is pulled out from one end of the wound body 22A and is continuously fed out onto the transport belt 2 at the rear in the transport direction while being stretched at least in the transport direction by the transport rollers 4a and 4b of the production line.

In the process of sending out,
The transfer device 5 provided above the conveyor belt 2 transfers the paste-like heat-generating composition M onto the upper surface of the base material 22 as shown in FIG.
As shown in FIG.
m, and a plurality of transfer laminates are formed in an independent state.

In this manner, the paste-like exothermic composition M
Further, one end of a film-shaped or sheet-shaped covering material 21 wound in a roll shape is continuously sent out and covered on the transferred and laminated base material 22 at a transport position behind the base material 22. .

This paste-like exothermic composition M was produced by the following method. That is, based on 70 parts by weight of iron powder (DKP manufactured by Dowa Iron Powder Co., Ltd.) as an active ingredient, 10 parts by weight of activated carbon (GL-50 manufactured by Norit Co.) as a carbon component and sodium chloride (sodium chloride) 2 as a metal chloride Parts by weight, thickener (Shin-Etsu Chemical Co., Ltd., trade name METROZ 60SH
-4000) 0.7 part by weight, 0.2 part by weight of a surfactant (trade name: DEMOL EP manufactured by Kao Corporation) and 0.1 part by weight of sodium tripolyphosphate as a pH adjuster were mixed, and water was added to this mixture. In addition, the viscosity at a temperature of 20 ° C. is 30
It is adjusted to be about 100,000 cps.

That is, activated carbon, thickener, surfactant, p
H adjuster, salt and iron powder in the stated order, and in the mixing ratio described above, were put into a mixer (TK Hibis Mix 2P-100, 100 liter capacity, manufactured by Tokushu Kika Kogyo Co., Ltd.),
After stirring for 5 minutes, water was added with further stirring, and
Mix for a minute.

Thereafter, the blades and the deposits in the container are cleaned, kneaded again for 20 minutes, and the viscosity and specific gravity are measured. The water content is adjusted so that the viscosity is around 3,000,000 cps by the following method. The water content is iron powder (Dowa Iron Powder D
KP) was 30.1 parts by weight based on 100 parts by weight.
The obtained paste-like exothermic composition has a viscosity of 2.98 million cp.
s.

The rotation of the blade was performed at 10 rpm from start to finish. The viscosity of the product of the present invention increased when it was stored at 10 ° C. for 1 hour, but when kneaded again, the viscosity was 3.01 million cps by the following method, and this was laminated on the substrate 22 by screen printing. In this case, the rotation speed of the blade is 10 rpm from the start to the end.
I went in.

The viscosity is determined by TOKIMEC IN
C. (VISCOMMETER BH type viscometer), and using a # 7 rotor at a rotation speed of 2 rpm and a measurement temperature of 2 using a beaker with a beaker inner diameter (85 mm).
This is a value measured at 0 ° C.

On the other hand, in order to increase the mechanical strength and obtain sufficient flexibility, the covering material 21 is made of, for example, a 150 μm-thick nylon nonwoven fabric on one side of a 100 μm-thick polyethylene porous film. Laminated ones are used. The moisture permeability of the coating material 21 is adjusted so that the moisture permeability is 400 g / m ² · 24 hr by the Lissi method.

The coating material 21 is provided above the start position of the production line in the state of the wound body 21A.
One end of the wound body 21A is pulled out, and is fed onto the base material 22 on which the paste-like heat generating composition M is laminated in a state where the one end portion is pulled out by the transfer rollers 6a and 6b of the production line at least in the transfer direction. In the process until the coating material 21 is sent out onto the base material 22,
The hot-melt adhesive provided above the coating material 21 is dropped at appropriate intervals on the coating material 21 at equal intervals, and furthermore, the stretchable thread-like material or the belt-like material provided above the conveyance rear position behind it. In this case, an elastic band-like body (a flat rubber thread having a thickness of 0.2 mm and a width of 3 mm, the same applies hereinafter) 9
The hot melt adhesive is conveyed so as to be superimposed on the coating material 21 in a state of being extended or expanded in the conveyance direction, and is further heated by the rear-side heating rollers 8a and 8b so that the coating material 21 and the expansion and contraction can be performed. Is adhered to a proper place at equal intervals. Then, the covering material 21 to which the elastic band-like body 9 is adhered is conveyed onto the rear substrate 22 while maintaining the stretched state.

The coating material 21 thus conveyed onto the base material 22 is covered so as to cover the heat-generating composition M in the form of paste, and the base material 22 and the coating material 2 are coated with a hot-melt adhesive.
The heat-generating composition M is sealed by the base material 22 and the coating material 21 by being heated and adhered to a predetermined portion of the heat-generating composition 1. Be cut off.

In this example, a roll-form base material 22 having a width of 130 mm was horizontally fed, and a paste-like exothermic composition M was screen-printed on the upper surface thereof to a thickness of about 550 μm. Then, the periphery of the printing area is sealed by heat sealing, and cut one after another at the center of the heat sealing area in the width direction, so that the elastic heating tool 4 is stretched.
A was formed so that the seal width around A was 7 mm.

As shown in FIG. 2, a plurality of the exothermic heating tools 4A thus completed are enclosed in a paste-like exothermic composition M between the base material 22 and the covering material 21 in an independent state. The elastic heating tool 4A is in a state where no tension is applied.
Since the elastic band 9 is in a contracted state, FIG.
As shown in FIG. 5, the entire packaging material 50 is in a contracted state like a bellows shape, and is easily stretched greatly when pulled, and has elasticity.

The elastic heating tool 4A manufactured as described above is used as it is, for example, it is wound around a desired portion such as an arm in a stretched state, and fixed with a band or the like, or a lining of a jumper or the like is used. May be used as
It is desirable to use it as a stretchable thermal base fabric for manufacturing various stretchable heating tools by making use of a point having great stretchability like a bellows shape.

FIGS. 3 to 10 show a method of manufacturing an elastic heating tool having various cylindrical shapes, which is one of the final products, using this base cloth. In each of these drawings, the same reference numerals are given to portions common to FIGS. 1 and 2.

First, as shown in FIGS. 3 and 4, a method for manufacturing a tubular elastic heating tool 41B will be described.

The elastic heating tool 41B includes an arm, a wrist,
It is worn like a supporter on elbows, thighs, knees, ankles, etc. as a supporter to warm the mounting part in cold weather etc. or to prevent pain at the joints of the body due to cooling, all of which are almost the same It is manufactured by a manufacturing method.

First, the sheet-like elastic heating tool manufactured by the above-described manufacturing method was applied to a sheet having a width of 1 mm as shown in FIG.
30mm, length 235mm (280mm when extended)
It is formed by cutting into an elastic heating tool 4B having a rectangular shape.

In this case, the base material 22 and the coating material 21 are sealed at the outer peripheral edge of the exothermic composition M by thermal bonding, and the exothermic composition M is sealed therein.
The outer peripheral edge 21a between the base material 22 and the coating material 21 is also thermally bonded.

The elastic heating tool 4B thus formed
Further, a heat bonding layer 16 is formed on one end edge 23 in the direction of expansion and contraction by a hot-melt type adhesive, and this elastic heating tool 4B is folded back as shown in FIG.
3, 23 are superimposed and thermally bonded to each other, thereby producing a bellows-shaped elastic heating tool 41B having a ring shape such as a supporter. Many vertical lines drawn on the elastic heating tool 41B in FIG. 4 are ridge lines of wrinkles. Reference numeral 9 denotes an elastic band-like body 9 spotted on the covering material 21 at regular intervals.

In the above embodiment, the sheet-like elastic heating tool 41B is cut into a predetermined shape, and the sheet-like elastic heating tool 41B is turned back to form a tubular elastic heating tool 41B. A thermal adhesive layer 16 is formed on the tool at a predetermined interval with a hot-melt adhesive, and this is folded back and cut while adhering the thermal bonding portion to form a tubular elastic heating tool 41.
B may be formed.

In the above embodiment, the elastic heating tool 4
The method of joining B by folding is not limited to the method of joining with the heat bonding layer 16, but may be replaced by stitching,
Various means such as adhesion using a hot-melt adhesive or heat fusion may be employed.

[0129] The ring-shaped elastic heating tool 41B completed in this way greatly expands in a ring shape when a force is applied in a direction opposing the urging force of the elastic band-like body 9.

[0130] For this reason, a final product such as a supporter having great elasticity is obtained. Moreover, this elastic heating tool 4
In 1B, since the stretching action is performed by a plurality of stretchable strips 9, each surface does not stretch uniformly, but expands and contracts at an arbitrary position. For this reason, for example, it is possible to follow a gentle curved surface such as a calf of a leg, and to follow a movement of a bent portion such as around an elbow joint or a knee. Note that the size of the elastic heating tool 41B, the size of the ring, and the like are arbitrarily changed depending on which part of the body is used by being worn.

[0131] The elastic heating tool 41B formed in this manner is subsequently sent to the broadcasting process, and is enclosed in a non-breathable outer bag (not shown).

After the paste-like heat-generating composition is sealed between the base material 22 and the covering material 21, a part of the water is gradually absorbed by the packaging material 50, and the exothermic reaction is smoothly performed by contact with air. Is in a state of progress.

[0133] Also, after 24 hours have passed since the outer bag was sealed, the outer bag was broken and attached to the elbow, and when used normally, it could follow the expansion and contraction of the elbow extremely smoothly. It was recognized that there was no shift or pressure and there was a soft feeling and it could be used comfortably.

After being attached to the elbow, the exothermic temperature rose to about 38 ° C. in about 1 to 2 minutes, and thereafter, it was recognized that heat was generated at 38 to 41 ° C. for 6 hours or more.

FIGS. 5 and 6 show a ring-shaped elastic heating tool 41C in which the circumference of the cylinder at both ends in the width direction largely expands and contracts.
2 shows a method of manufacturing the same. This elastic heating tool 41
C is the same as FIG. 3 and FIG. 3 except that a plurality of elastic strips 9 are spotted on both ends of the covering material 21 around the tube opening as shown in FIG. It is manufactured by the same method as in the case of the tubular elastic heating tool 41B described in FIG. In addition, the manufacturing method is omitted because it is duplicated.

As described above, the elastic heating tool 41C has a structure in which both ends of the cylindrical mouth expand and contract greatly. Suitable in the case of common, for example, when worn around the arm, because the contact surface around the arm is large,
A higher heat generation effect can be obtained than with the bellows-shaped elastic heating tool 41B. Of course, since the elastic heating tool 41C itself has elasticity, it can cope with a slight difference in the thickness around the arm and does not give a feeling of pressure or cramp when used. .

FIGS. 7 and 8 show a method of manufacturing a tubular elastic heating tool 41D in which a part of the peripheral surface largely expands and contracts and the opening of the cylinder is inclined. In the process step of manufacturing the packaging material, the elastic heating tool 41D has a plurality of elastic strips 9 spotted on both ends in the width direction of the covering material 21 around the cylindrical opening as shown in FIG. 3 and 4 except that a rectangular elastic heating tool 4D in which a plurality of elastic strips 9a are vertically attached to both ends in the length direction is manufactured. It is manufactured similarly to the case of the tool 41B.

The elastic heating tool 41D greatly expands and contracts in a bellows shape in a direction in which the circumference of both ends of the cylinder mouth expands, and furthermore, a part of the cylinder surface expands and contracts in a vertical direction by tilting the cylinder mouth. Due to its shape, when it is attached to a part where large bending is repeated, such as a knee or elbow, the feeling of attachment is soft, and the vertical expansion and contraction follows this movement, and the elbow and knee Since the inside is greatly bent, a good wearing feeling can be obtained.

FIGS. 9 and 10 show a method of manufacturing a tubular elastic heating tool 41E in which a part of the peripheral surface is greatly expanded and contracted and the direction of the cylindrical opening is inclined, and a part of the envelope surface is opened. ing. This elastic heating tool 41E forms two symmetrical packaging materials corresponding to a desired shape into a substantially L-shape as shown in FIG. A large curved portion Y is formed at the location, and then a plurality of elastic strips 9 are spotted on both ends of the covering material 21 around the cylinder opening, and a desired shape around the greatly expanded L-shaped outer corner is obtained. To produce a rectangular heating tool 4E in which a plurality of elastic strips 9b directed toward the both ends are spotted, and then the both ends around the mouth of the heating tool 4E and the curved portion It is manufactured by overlapping the edges except for Y and joining them with the thermal adhesive layer 16.

The elastic heating tool 41E greatly expands and contracts in a bellows shape in a direction in which the circumference of both ends of the cylinder mouth expands, and furthermore, a curved part Y in which the cylinder mouth is inclined and a part of the cylinder surface is a large opening is formed. In addition, since the surface opposite to the curved portion Y is formed of a large surface and this surface greatly expands and contracts in the vertical direction such as a bellows, the curved portion is repeatedly bent at a portion such as a knee or an elbow. When the part Y is mounted so as to face the inside of the elbow or knee, the vertical expansion and contraction follows this movement, and the bending part Y is provided inside the elbow or knee.
, A good feeling of wearing that is extremely easy to bend is obtained.

FIGS. 11 to 29 illustrate various types of elastic heating tools as final products. Among them, the elastic heating tools shown in FIGS. 11 to 16 each have a cylindrical shape. Each of the elastic heating tools shown in FIGS. 17 to 24 has a bag shape, and the elastic heating tools shown in FIGS. 25 to 29 are manufactured by processing a sheet-like material into a desired shape. is there.

Among these, the elastic heating tool 4F shown in FIG.
Is worn on the elbow like a supporter to warm the area around the elbow in cold weather or to prevent joint pain due to cold,
As the elastic heating tool 4F, any of the elastic heating tools 41B, 41C, 41D, and 41E having various shapes described above is applied.

The elastic heating tool 4G shown in FIG. 12 is used to wear around a calf of a leg such as a supporter to warm around the calf in cold weather and to heal muscle pain. The stretchable heating tools 41B and 41C are applied.

The elastic heating tool 4H shown in FIG. 13 is used for warming the circumference of the thigh in cold weather or healing muscle pain by wearing it on the thigh of a leg such as a supporter. The difference between the elastic heating tool 4H for the thigh and the elastic heating tool 4G for the calf lies in its size, and the above-mentioned elastic heating tools 41B and 41C are applied.

An elastic heating tool 4K shown in FIG. 14 is attached to an elbow such as a supporter to warm the area around the elbow in cold weather.
For preventing joint pain due to cold, any of the above-mentioned elastic heating tools 41B, 41C, 41D and 41E is applied.

The elastic heating tool 4L shown in FIG. 15 is worn around the belly such as a belly band to warm the belly around in cold weather and to prevent diarrhea due to cold. The above-described elastic heating tools 41B and 41C having a size corresponding to the surroundings are applied.

The elastic heating tool 4M shown in FIG. 16 is worn around the waist to warm the waist in cold weather or to prevent back pain due to cold.
Is the above-mentioned elastic heating tool 4 of a size corresponding to the waist circumference.
In addition to 1B and 41C, those in which both ends of a flat elastic heating tool corresponding to the size of the waist circumference are joined with a planar fastener or a fastener are applied.

The elastic heating tool 4N shown in FIG. 17 is formed in the shape of a sock to warm the feet in cold weather. In standing work outdoors in cold weather, the cold feeling transmitted from the soles to the soles is prevented. It also prevents the cold feeling of the floorboard transmitted from slippers during the winter kitchen work. Also, as the phrase "the sole is the second heart", various points and blood vessels of the human body are gathered on the soles and toes of the human body. This elastic heating tool 4N is extremely effective also in the point of aiming. The stretchable heating tool 4N is formed by laminating and bonding the base material 22 and the covering material 21 to form a sock cloth, enclosing the exothermic composition M in a part of the sock cloth, and has stretchability around the ankle. A plurality of elastic strips 9 are spotted. In the figure, the exothermic composition M is encapsulated in locations around the ankle and on both sides from the bottom surface. However, the exothermic composition M is not limited to only this location, and the exothermic composition M is scattered throughout the socks. It may be.

The elastic heating tool 4P shown in FIG. 18 is formed in a glove shape and warms the palm, the back of the hand and the fingertips in cold weather. A plurality of elastic strips 9 are spotted around the wrist 21. In addition, this elastic heating tool 4P
Is manufactured by forming two heating elements having a palm size in a symmetrical shape by the manufacturing method described above with reference to FIG. Are bonded to each other by adhesion, heat bonding, heat fusion, or the like with the pressure-sensitive adhesive described above, and are further turned upside down to hide the bonded portions.

The elastic heating tool 4 shown in FIGS. 19 and 20
R is for warming the feet by wearing the socks 50 attached to the feet in cold weather, before wearing, and a sheet-like heat symmetrically formed in a substantially sock shape large enough to be used in this way. The tool may be formed, and the symmetrical central portion may be folded and the peripheral edge may be joined as described above except for the opening for the sock 50.

The elastic heating tool 4 shown in FIGS. 21 and 22
S is worn on the head in cold weather to warm the head, for example, a woman washing her hair at a travel inn, curling her hair and waving it, or wearing it on her head and using it as a dryer is there.

For this reason, a plurality of elastic strips 9 are spotted on the periphery of the elastic heating tool 4S, and the heat-generating composition M is kept in an independent state over substantially the entire elastic heating tool 4S. And several are enclosed.

The elastic heating tool 4 shown in FIGS. 23 and 24
T is a warm-type ear cover that is worn on the ears in cold weather and warms the ears. Such a thing is prevented by wearing the tool 4T. The elastic heating tool 4T is formed in a bag shape having an appropriate size to cover the ears, and a plurality of elastic strips 9 are spotted on a peripheral portion thereof so as not to fall off when worn.

The elastic heating tool 4 shown in FIGS. 25 and 26
U is used as an inner of the winter coat 60 and warms the winter cold from the back and around the body, and is particularly suitable for warming around the spine where cold is easily felt in winter. In this elastic heating tool 4U, a plurality of exothermic compositions M are independently sealed between the base material 22 and the covering material 21 formed in a desired size by the manufacturing method described with reference to FIG. It was manufactured by Of course, the thermal inner made of the elastic heating tool 4U can be used not only for a coat but also for a jumper, a chan-chan, a semi-cloth or the like.

The elastic heating tool 4V shown in FIG. 27 is a stretchable heating instrument formed in a shape like a sweater, and a plurality of exothermic compositions M are sealed in appropriate places in an independent state. In the figure, the stretchable portions are not clear, but for example, a plurality of stretchable strips 9 described above are spotted around the wrist, the hem, the shoulder, etc. to facilitate wearing or follow the movement of a living body. It is preferable to make it easier.

The elastic heating tool 4 shown in FIGS. 28 and 29
W and 4Z are all for warming a baby bottle 70 containing breast milk or milk, and for warming breast milk or milk to a temperature at which a baby can easily drink when cold. Among them, the elastic heating tool 4W covers and warms the peripheral surface of the baby bottle 70,
A plurality of elastic strips 9 are spotted on the covering material 21 around at least both ends of the elastic heating tool 4W so that the baby bottle 70 can be held by hand as it is. The elastic heating tool 4Z warms the baby bottle 70 from the bottom with the exothermic composition M enclosed therein, and forms a substantially flat surface such as a coaster.

Although not shown, it is also possible to manufacture a pad-shaped stretchable heating tool for warming breast milk by the heat of the exothermic composition attached to the mother's breast. Further, a hair band-shaped elastic heating tool for warming the forehead around the head can be easily manufactured according to the manufacturing method of the present invention. Further, according to the manufacturing method of the present invention, an elastic heating tool having a cover shape that can prevent the entire head including the face from being cold from the cold and warm the head during the extreme cold can be easily manufactured.

[0158]

According to the heating tool of the present invention described above, the following effects can be obtained.

In the elastic heating device according to the present invention,
A stretchable thread or band is fixed to the flat packaging material at predetermined intervals to form the packaging material in a contracted state,
The powdery or paste-like heat-generating composition is singly or independently enclosed in the packaging material, so that the heat-generating composition is easy to use and can provide heat to a desired portion such as a waist. In particular, since the stretchable thread-like or band-like body fixes the heating device in a state that is perfectly adapted to any part of the living body, it is not necessary to provide the heating device with an adhesive layer. There is no harm associated with the layers, that is, for example, there is no residue of glue or underwear, sanitary, there is no skin irritation, extremely safe, and the elasticity of the heating tool is achieved by the elastic thread or band. The elasticity and elasticity are remarkably excellent, and the elbow in the living body,
There is moderate adhesion to uneven parts such as knees and ankles and joints.Also, the joints have large irregularities, and despite the large expansion and contraction of the joints, the heating tool can sufficiently follow the movement of the joints Therefore, it is satisfied without giving the user a feeling of tension and discomfort, and makes the user feel a soft feeling of use,
Further, there is an effect that the heating tool does not peel off during use.

In addition, the stretchable heating device according to the present invention has extremely excellent stretchability and flexibility due to the stretchable thread or band, but the moisture permeability of the packaging material is affected by the stretch. Therefore, it also has the effect of obtaining stable heat without causing low-temperature burns.

Further, the method for manufacturing a stretchable heating tool according to the present invention has an effect that the stretchable heating tool of the present invention can be suitably manufactured at a low cost.

[Brief description of the drawings]

FIG. 1 is a process chart showing an example of a manufacturing process of an elastic heating tool according to the present invention.

FIG. 2 is a cross-sectional view of a sheet-like elastic heating tool manufactured by the manufacturing method of the present invention.

FIG. 3 is a front view showing a shape before a stretchable heating tool having a tubular shape and the entire peripheral surface of which is stretchable is manufactured.

FIG. 4 is a perspective view showing a shape after the production.

FIG. 5 is a front view showing a shape before an elastic heating tool having a tubular shape and having elasticity around the peripheral openings at both ends thereof is manufactured.

FIG. 6 is a perspective view showing a shape after the production.

FIG. 7 is a front view showing a shape before a stretchable heating tool having a tubular shape and having elasticity around the peripheral openings at both ends thereof and a part of the circumferential surface largely expanding and contracting in a vertical direction is manufactured. .

FIG. 8 is a perspective view showing a shape after the production.

FIG. 9 is a front view showing a state before a cylindrical elastic heating tool is manufactured in which a part of the peripheral surface is greatly expanded and contracted and the direction of the cylinder opening is inclined and a part of the peripheral surface is opened. is there.

FIG. 10 is a perspective view showing a shape after the production.

FIG. 11 is an explanatory view showing a usage example in which a tubular elastic heating tool is attached to an elbow such as a supporter.

FIG. 12 is an explanatory view showing a usage example in which a tubular elastic heating tool is attached to a calf of a leg such as a supporter.

FIG. 13 is an explanatory view showing a usage example in which a tubular elastic heating tool is attached to a thigh of a foot such as a supporter.

FIG. 14 is an explanatory view showing a usage example in which a tubular elastic heating tool is attached to a knee of a leg such as a supporter.

FIG. 15 is an explanatory view showing a usage example in which a tubular elastic heating tool is attached to a belly band such as a belly band.

FIG. 16 is an explanatory view showing a usage example in which a tubular elastic heating tool is attached around the waist;

FIG. 17 is a front view showing an elastic heating tool formed in a sock shape.

FIG. 18 is a front view showing an elastic heating tool formed in a glove shape.

FIG. 19 is a front view showing a shape before a stretchable heating device formed in a tabi shape, which is put on a sock and put on a foot to warm, is manufactured.

FIG. 20 is a view showing the same state after manufacturing.

FIG. 21 is a perspective view showing a hair cap-shaped elastic heating tool.

FIG. 22 is a diagram showing a usage example.

FIG. 23 is a perspective view showing an elastic heating tool having an ear cover shape.

FIG. 24 is a view showing an example of use of the same.

FIG. 25 is a perspective view showing an elastic heating tool having an inner shape of a coat.

FIG. 26 is a view showing an example of use of the same.

FIG. 27 is a front view showing an elastic heating tool formed in a shape like a sweater.

FIG. 28 is a perspective view showing an elastic heating tool for warming a baby bottle.

FIG. 29 is a diagram showing an example of use of the same.

[Explanation of symbols]

 41B-41D Elastic heating tool 4E-41H Elastic heating tool 4K-4N Elastic heating tool 4P Elastic heating tool 4R-4W Elastic heating tool 4Z Elastic heating tool M Exothermic composition 7 Hot melt adhesive 9 Elastic Fibrous body or strip 21 covering material 22 base material 50 packaging material

Claims (10)

[Claims] 1. A flat wrapping material comprising a film-like or sheet-like base material and a film-like or sheet-like covering material is provided with an elastic thread-like or band-like material fixed at a predetermined position. Formed in a shrunk state, at least a part of this packaging material has air permeability, and a plurality of powdered or pasty heat-generating compositions are enclosed in the packaging material alone or independently. A stretchable heating tool, characterized in that: 2. The elastic heating tool according to claim 1, wherein the elastic thread or band is fixed to a predetermined surface of the packaging material via a reinforcing material. 3. The exothermic composition is formed in the form of a paste, and the base material and / or coating material enclosing the exothermic composition is formed of a water-absorbing material having water absorbency. An elastic heating tool according to claim 1. 4. The elastic heating tool according to claim 1, wherein a water-absorbing layer is laminated on a side of the base material and / or the coating material that contacts the exothermic composition. 5. The elastic heating tool according to claim 1, wherein the elastic heating tool has a joint, a thigh, a calf,
An elastic heating tool formed in a tubular shape or an L-shaped tubular shape so that it can be used by being attached to a belly, waist, knee, elbow, wrist, ankle, or the like. 6. The stretchable heating device according to claim 1, wherein the stretchable heating device has an ear cover shape, a sock shape, a cover shape from a toe to an ankle, a glove shape, a head width shape (hair cap shape). ), An elastic heating tool formed in a cover shape from the crotch portion to the buttocks portion, a backrest shape, a shape to be attached to winter clothes, or a heat-insulating pad for breast milk. 7. At least a part of one or both of a film-like or sheet-like base material and a coating material has air permeability, and the base material or the coating material is stretched. At least one portion on the upper surface of the stretched base material after the stretchable thread or band is fixed to one or both of the material and the covering material along the predetermined position in an extended state. In a predetermined region, after laminating a paste-like or powder-like heat-generating composition, a base material and a coating material are placed on an outer peripheral portion of the heat-generating composition by covering with a coating material that is stretched so as to cover the heat-generating composition. Together with
A method for producing a stretchable heating tool, comprising shrinking with the stretchable thread or band. 8. A film-like or sheet-like base material and / or a coating material, at least a part of which has air permeability, expands the base material or the coating material, and expands the base material in the expanded state. Along with one or both of the material and the covering material, a stretchable thread-like or band-like material is fixed along a predetermined position thereof, and the contracted reinforcing material is fixed in an extended state and then expanded. After laminating a paste-like or powder-like heat-generating composition on at least one predetermined region on the upper surface of the base material, the heat-generating composition is covered with a coating material that is stretched so as to cover the heat-generating composition. A method for manufacturing an elastic heating tool, comprising sealing a base material and a covering material in a part and shrinking the elastic material with the elastic thread or band. 9. The method for manufacturing a stretchable heating tool according to claim 7 or 8, wherein the stretchable heating tool obtained is folded back to seal a predetermined portion, and is compressed by a stretchable thread or band. Manufacturing of elastic heating tools formed into a tubular shape or L-shaped tubular shape so that they can be used by being attached to joints, thighs, calves, belly, hips, knees, elbows, wrists, ankles, etc. Method. 10. The method for manufacturing a stretchable heating tool according to claim 7, wherein the stretchable heating tool obtained is folded back to seal a predetermined portion, and is compressed by a stretchable thread or band. By doing so, ear covers, socks,
Cover from the toe to the ankle to the ankle, glove shape, head width (hair cap shape), cover from the crotch to the hips, back support, the shape to be attached to winter clothes, or the shape of a warming pad for breast milk A method for manufacturing the formed elastic heating tool.