JP2003135509A - Portable heat pad - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a portable heat pad easily manufactured, distributed and used, positively stickable even to the large curvature part or frequently moving part of the body for stretching, bending, and the like without causing a sense of incongruity and obtaining a heat effect over a long period of time. SOLUTION: This portable heat pad has a container body 10 having a recessed part 11 and a collar part 12 provided projecting around the opening of the recessed part; a heat pad material 20 stored in the recessed part of the container body; and an airtight film 30 or a bag body 40 for covering to close the opening of the recessed part in the state of storing the heat pad material in the recessed part. The heat pad material is integrally composed of a water retaining gel layer 21 having a gel composition that can be gelled including a water-soluble polymer and water and has sticky property after gelling; an exothermic layer 22 comprising an exothermic composition; and a gas permeable layer 23 for covering the exothermic layer. The interior of the recessed part closed with the airtight film or bag body is maintained in a deoxidized state.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a flexible, portable type which is simple and convenient to manufacture, distribute and use, has a heat and moisturizing effect for a long period of time, and can also function as a sustained-release replenishing medium for active ingredients. Regarding the heating pad.

[0002]

2. Description of the Related Art Homeothermic animals such as humans have a biological mechanism for maintaining body temperature within a certain range. In this regard, the internal circulation of blood and body fluid occupies a great weight in maintaining the above-mentioned body temperature.

Therefore, in particular, poor circulation of blood or body fluid in humans causes a decrease in body temperature at a specific site, which is perceived as "coolness" and is a target for treatment. This "coldness" has been the cause of all illnesses for a long time, and so-called Cairos have been widely used, especially for Japanese people, in order to get rid of this coldness.

As a body warmer, in recent years,
A so-called chemical warmer containing a heat-generating composition containing an oxidizable metal such as iron powder and activated carbon as main components and generating heat when contacted with oxygen in the air is contained in a breathable sheet body because of its ease of use. It is the mainstream.

[0007] By the way, the above-mentioned chemical warmers can be classified into two types, depending on how they are used, namely, a type which is attached to underwear or clothes to indirectly give heat to the skin and a type which is directly attached to the skin.

[0006] Here, in the above-mentioned type of chemical body warmer which is directly applied to the skin (hereinafter referred to as a direct warmer body warmer), a heat-generating layer made of a heat-generating composition is generally provided on the upper surface of a base material layer, and the heat-generating layer is used as a nonwoven fabric. And the adhesive layer is provided on the lower surface of the base material layer.

[0007] Usually, in order to avoid low-temperature burns, the direct-applying body warmer is adjusted so that the temperature of the heat-generating layer does not rise so much, and therefore the heating effect may not be expected so much in some cases.

Further, since a material having a high rigidity is generally used as the above-mentioned base material layer, when it is used in a portion having a large curvature of the body or a portion where expansion / contraction is frequently performed, it is easily peeled off or the portion is removed. This will hinder the movement of the mouse and cause an uncomfortable feeling, and as the oxidation reaction further progresses, the heat generating layer will become harder, so that the rigidity will increase more and more, and eventually it will not be suitable for these sites.

[0009]

DISCLOSURE OF THE INVENTION The present invention is simple and convenient to manufacture, distribute, and use, and does not cause discomfort even in a portion having a large curvature of the body or a portion where exercise such as expansion and contraction and bending is frequently performed. Another object of the present invention is to provide a portable heating pad that can be reliably applied and that has a heating effect for a long period of time.

[0010]

A portable heating pad according to claim 1 of the present invention has a container body 10 having a concave portion 11 and a flange portion 12 which is provided so as to project around the opening of the concave portion 11.
And the thermal pad material 20 housed in the recess 11 of the container body 10 and the thermal pad material 20 described above.
The air-tight film 30 is detachably attached to the collar 12 so as to cover and seal the opening of the recess 11 in a state of being housed in the recess 11.
0 is a water-retaining gel layer 21 in which a gel composition containing a water-soluble polymer and water and capable of gelling and having an adhesive property after gelling is filled in the recess 11 with a predetermined thickness, and the water-retaining gel layer 2
1, a heat generating layer 22 containing a heat generating composition and an air permeable ventilation layer 23 covering the heat generating layer 22 are integrally formed, and are sealed by the airtight film 30. The inside of the recess 11 is maintained in a deoxidized state.

The portable heating pad according to claim 2 of the present invention is a container main body 10 having a concave portion 11 and a flange portion 12 provided so as to project around the opening of the concave portion 11, and the concave portion of the container main body 10. Thermal pad material 20 housed in 11
And the above-mentioned heating pad material 20 into the recess 11 of the container body 10.
And the airtight film 30 which is detachably attached to the collar 12 so as to cover and seal the opening of the recess 11 in a state of being accommodated in the above. Breathable ventilation layer 23 provided on the side
A heat-generating layer 22 containing the heat-generating composition laminated on the ventilation layer 23; and a water-soluble polymer and water laminated on the heat-generating layer 22, which can be gelated and have an adhesive property after gelation. The water-retentive gel layer 21 having the gel composition is integrally formed, and the inside of the recess 11 sealed by the airtight film 30 is maintained in a deoxidized state.

The portable heating pad according to claim 3 of the present invention is a container main body 10 having a concave portion 11 and a flange portion 12 provided so as to project around the opening of the concave portion 11, and the concave portion of the container main body 10. Thermal pad material 20 housed in 11
And the above-mentioned heating pad material 20 into the recess 11 of the container body 10.
A bag body 4 which can be opened and is sealed in the state of being housed in
0, and the above-mentioned thermal pad material 20 is a water-retaining material in which a gel composition containing a water-soluble polymer and water and capable of gelling and having an adhesive property after gelling is filled in the above-mentioned recess 11 to a predetermined thickness. The gel layer 21, a heat-generating layer 22 containing a heat-generating composition laminated on the water-retaining gel layer 21, and an air-permeable ventilation layer 23 that covers the heat-generating layer 22 are integrally formed. The inside of the bag body 40 is maintained in a deoxidized state.

The portable heating pad according to a fourth aspect of the present invention is a container main body 10 having a recess 11 and a flange portion 12 projecting around the opening of the recess 11, and the recess of the container main body 10. Thermal pad material 20 housed in 11
And the above-mentioned heating pad material 20 into the recess 11 of the container body 10.
A bag body 4 which can be opened and is sealed in the state of being housed in
0, and the heating pad material 20 includes a gas permeable ventilation layer 23 provided on the bottom surface side of the recess 11 and a heat generation layer 2 including a heat generating composition laminated on the ventilation layer 23.
2 and a water-retaining gel layer 21 having a gel composition which is laminated on the heat generating layer 22 and which contains a water-soluble polymer and water and can be gelated and has adhesiveness after gelation are integrally formed. The inside of the bag body 40 is maintained in a deoxidized state.

Here, the deoxidized state in the present invention means
Not only in the absence of oxygen at all, but also in the heating layer 2
It also includes a state in which oxygen is present to the extent that the exothermic composition in 2 does not substantially generate heat.

In the portable heating pad of claims 1 and 3, the airtight film 30 is peeled off, and in the portable heating pad of claims 2 and 4, the bag body 40 is used.
Is opened, and the thermal pad material 20 is pulled out from the concave portion 11 of the container body 10 described above.

In this way, the air is guided to the heat generating layer 22 through the ventilation layer 23 of the heating pad material 20.
At this time, water is supplied from the water-retaining gel layer 21 to the heat generating layer 22, and the oxygen of the air introduced as described above and the heat generating composition in the heat generating layer 22 come into contact with each other to cause an oxidation reaction. The heat generating layer 22 generates heat.

On the other hand, since the water-retaining gel layer 21 in the thermal pad material 20 has a considerable thickness and has adhesiveness and elasticity, even if the site to be attached has a considerable curvature, its shape It can be attached along with, and can follow it even if the site frequently undergoes movements such as expansion and contraction and bending.

Further, even if the amount of heat generated by the oxidation reaction is relatively large, since the water-retaining gel layer 21 retains a considerable amount of water having a large specific heat, the amount of heat used to warm this water is used. High heat transfer directly to the skin at the application site is prevented, and the heated water-retaining gel layer 21 can retain the obtained heat quantity for a considerably long time. Therefore, a comfortable thermal stimulus can be applied to the skin for a long time.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, a container body 10
May have any shape as long as it has at least a concave portion 11 capable of accommodating the gel composition and a flange portion 12 protruding around the opening of the concave portion 11.
It is appropriately selected from various aspects such as portability, distribution, designability, and economic efficiency.

As a material for the container body 10, it is preferable to use a thermoplastic resin which can be injection-molded, vacuum-molded, pressure-molded, etc., but is not limited thereto. Further, in consideration of the properties of the water-retaining gel layer 21 in the thermal pad material 20 to be contained and various substances mixed in the water-retaining gel layer 21, a material having a property such as translucency or light-shielding property is appropriately selected. Try to use it.

Further, the container body 10 may be made of a single resin, or may be a laminate of a plurality of resin layers or a laminate of a resin layer and another layer such as a metal layer. May be.

Here, when the container body 10 is formed of a single resin and requires light transmission, thermoplastic resins such as polypropylene, polyethylene terephthalate and polystyrene are preferred. On the other hand, when light-shielding property is required, a laminate obtained by laminating an aluminum foil on the resin layer is preferred. However, it is not limited to these.

Further, the wall thickness of the container body 10 is set so as to have a mechanical strength capable of withstanding a force applied during carrying, distribution, storage, etc. For example, in the case of injection molding, it is 3
The range is preferably 0 to 1000 μm, and more preferably 100 to 500 μm, but is not limited thereto.

The recess 11 provided in the container body 10 may have any shape as long as it can accommodate the heating pad material 20, but generally the heating pad material 20 is flat. It is preferable that it can be stored in such a state.
Further, the planar shape of the concave portion 11 may be any shape, and examples thereof include a general rectangular shape, a shape of a certain kind and a character.

Further, the thermal pad material 20 according to the present invention.
Is composed of the water-retaining gel layer 21, the heat generating layer 22, and the ventilation layer 23 as described above.

Here, the water-retaining gel layer 21 is composed of a gel composition which contains a water-soluble polymer and water to form a gel.
It should be noted that the water-retaining gel layer 21 may be gelled with an additive such as a crosslinking agent, a thickener, a gelling agent, or the like,
It may be gelled without using such an additive.

Examples of the above water-soluble polymer include polyacrylic acid, salts of polyacrylic acid, polyglutamic acid, salts of polyglutamic acid, partially neutralized products of polyacrylic acid, partially neutralized products of polyglutamic acid, and curco. Mannan, locust bean gum, tamarind gum, polyvinyl alcohol, gelatin, sodium carboxymethyl cellulose, carrageenan, sodium alginate, carboxyvinyl polymer, graft starch and the like can be mentioned as preferable examples, but not limited thereto.

The above water-soluble polymer may be used alone, but it is preferable to use a mixture of several kinds in terms of heat retention, heat resistance, adhesiveness, etc. For example, polyacryl An acid, sodium polyacrylate, and at least one selected from polyvinyl alcohol, carboxyvinyl polymer and sodium carboxymethyl cellulose,
A water-soluble polymer composed of a mixture with sodium alginate can be mentioned, but it is not particularly limited thereto.

In the above mixture, instead of using polyacrylic acid and sodium polyacrylate, a partially neutralized product of polyacrylic acid may be used.

Further, in order to make it possible to easily take out the above-mentioned thermal pad material 20 from the concave portion 11 of the container body 10,
It is preferable that a part of the water retaining gel layer 21 is exposed to the outside of the water retaining gel layer 21 as the header portion 24a and the remaining portion 24b is attached to the water retaining gel layer 21 to provide the pad material removing member 24.

Here, in order to prevent the above-mentioned pad material take-out member 24 from coming off from the water retention gel layer 21, and to allow the thermal pad material 20 to be safely taken out from the recessed portion 11 of the container body 10, the water retention gel layer 21. Remaining part 24b to be attached to
Is formed into a net shape, and the net-shaped remaining portion 24b
Is preferably arranged so as to spread over the entire water retention gel layer 21 so that the tension applied when taking out the thermal pad material 20 is substantially evenly distributed over the entire water retention gel layer 21, but is not particularly limited to this. It is not something that will be done.
When the remaining portion 24b is formed in a net shape, this net-like mesh is large enough to spread smoothly over the entire water-retaining gel layer 21 and small enough to allow the entire water-retaining gel layer 21 to be pulled out without being broken during extraction. Is selected as appropriate.

The pad material take-out member 24 is preferably made of hydrophilic fiber such as rayon, but is not limited to this.

In the water retention gel layer 21 described above,
In a gel composition containing a water-soluble polymer and water to gel,
Aroma oil and pharmacologically active substances can be contained.

As the aroma oil, the essential oil components (essential oils) generally used for aromatherapy can be used as they are. Examples of the essential oil component include those described in Wonder Cellar, "84 Essential Oil Components for Aromatherapy," Fragrance Journal. Specifically, anise, angelica, benzoin, immortelle, chamomile, garlic, cardamom, galvanum, caraway, carrot seed, guaiac wood, grapefruit, cybres, cedarwood, star anise, sage, geranium, celery, thyme, tarragon, turpentine. , Frankincense, violet, pine, parsley, fennel, black pepper, bodige flower, lemon, lemongrass, rosemary, laurel, syringa, sycamore, cornflower, almond, arnica, fennel, genus,
Use extracts from watercress, gentian, camphor, plum, pear, turmeric, dandelion, timo, chorei, capsicum, eucalyptus, peppermint, ash, burdock, melissa, peach, mistletoe, eucalyptus, yokuinin, labenda, forsythia, etc. However, it is not particularly limited to these.

Further, the pharmacologically active substance may be overlapped with the above-mentioned aroma oil, for example, menthol, camphor, indomethacin, ketoprofen, diclofenac, oat extract, dipotassium glycyrrhizinate, hyaluronic acid, arbutin, tocopherol acetate, allantoin, vitamin C. And water-soluble azulene, acrinol and the like.

In order to facilitate the movement of the liquid inside the water retention gel layer 21, for example,
You may make it disperse the fiber group which surface has hydrophilicity at least. And as such a fiber group, for example, in addition to pulp, cotton yarn, rayon, and various other hydrophilic resin fibers, various hydrophobic resin fibers whose surface is hydrophilically treated, glass fibers, ceramic fibers, and the like. It can be used, but is not particularly limited thereto. Further, it is preferable that the above-mentioned fiber groups are dispersed in the water-retaining gel layer 21 so as to be three-dimensionally entangled.

The water-retaining gel layer 21 may be composed of a laminate of a plurality of gel sublayers 21a and 21b. In this case, each of the gel sublayers 21a and 21b is also made to use the above gel composition or the gel composition containing an aroma oil or a pharmacologically active substance, and the constitution in the adjacent gel sublayers is made different, It is preferable that each property can be exhibited.

A plurality of holes 25 penetrating in the thickness direction may be formed in the water retention gel layer 21. In this way, the heat from the heat generating layer 22 is generated in the holes 2
Through 5, it can be quickly and efficiently transmitted to the attachment site.

The heat-generating composition used for the heat-generating layer 22 contains, as main components, an oxidizable metal and activated carbon or an oxidizable metal, activated carbon and an inorganic electrolyte, and contacts the oxygen in the air to generate heat. Those known in the art can be used, and this exothermic composition can be used in the form of powder or paste.

Here, examples of the oxidizable metal include iron powder and aluminum powder, and iron powder is usually used. As the iron powder, for example, reduced iron powder, atomized iron powder, electrolytic iron powder or the like can be used.

The activated carbon also functions as an oxidation aid and a water retention agent, and for example, coconut shell charcoal, wood dust coal, peat charcoal, etc. can be used.

As the inorganic electrolyte, it is preferable to use alkali metal, alkaline earth metal, chloride of heavy metal, sulfate of alkali metal, etc., for example, sodium chloride, potassium chloride, magnesium chloride, second chloride. Use iron, sodium sulfate, etc.

Although the composition of the above exothermic composition cannot be unconditionally determined, for example, 5 to 20 parts by weight of activated carbon and 1.5 parts by weight of the inorganic electrolyte are added to 100 parts by weight of the oxidizable metal.
Although it can be used in the proportion of 10 to 10 parts by weight,
It is not particularly limited to this.

When the above exothermic composition is used in the form of powder, its particle size is preferably 60 mesh or less, and 100 or less.
A mesh or less is more preferable.

When the heat-generating layer is formed by using the powder of the heat-generating composition, for example, the heat-generating composition made of the powder is contained in the open cells of the soft sheet-shaped resin foam having open cells. It can also be filled.

For the ventilation layer 23, it is preferable to use a sheet material through which air is sufficiently passed and the exothermic composition in the exothermic layer 22 does not leak out. As the sheet material, For example, the porosity is 70 to
A non-woven fabric of about 99.5% is preferably used, but it is not limited to this.

The airtight film 30 used in the portable heating pad according to the above claims 1 and 3 may be a non-breathable film, and may be a film made of a single material.
It may be a laminate of different types of films.

Further, the bag body 40 used in the portable type heating pad according to the above-mentioned claim 2 or 4 is also the above-mentioned airtight film 30.
As long as it is non-breathable, it may be composed of a film made of a single material, or may be composed of films of different kinds laminated.

[0049]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A portable heating pad according to an embodiment of the present invention will be specifically described below with reference to the accompanying drawings. However, the portable heating pad of the present invention is not particularly limited to those shown in the following examples, and within the scope of not changing the gist thereof,
It can be implemented by appropriately changing it.

[Embodiment 1] FIG. 1 shows a schematic cross-sectional view of the portable heating pad A1 of Embodiment 1, and FIG. 2 shows the heating pad material 20 taken out from the container body 10 in the portable heating pad A1 of Embodiment 1. The schematic sectional drawing of is shown.

The portable thermal pad A1 of the first embodiment is
It has a container body 10, a heating pad material 20 filled and housed in the container body, and an airtight film 30 that seals the container body 10 with the heating pad material 20 stored therein.

Here, the container body 10 includes the heating pad material 2
It has a concave portion 11 for accommodating 0 and a flange portion 12 protruding around the opening of the concave portion 11, is made of a transparent material made of polystyrene, and has a wall thickness of 0.4 mm.
In this embodiment, the size of the recess 11 is set to 140 mm in length, 100 mm in width, and 7 mm in depth, but the size is not limited to this.

The thermal pad material 20 is composed of a water retaining gel layer 21, a heat generating layer 22, and a ventilation layer 23.

Here, in the water-retaining gel layer 21, the gel composition comprises 10% by weight of partially neutralized polyacrylic acid, 2% by weight of sodium alginate, 3% by weight of sodium carboxymethylcellulose and 25% of glycerin.
%, Gelling agent 0.5%, paraben 0.2% and water 59.3% by weight are used.

Then, the water-retaining gel layer 21 is formed by filling the gel composition into the recess 11 of the container body 10 to a thickness of, for example, about 4 mm.

Further, the heat generating layer 22 is a powder of a heat generating composition composed of reduced iron powder, coconut shell activated carbon and sodium chloride, and the coconut shell activated carbon is added to 100 parts by weight of the reduced iron powder. About 10 parts by weight of sodium chloride and about 5 parts by weight of sodium chloride were added, and a heat-generating composition whose particle size was adjusted to about 80 mesh or less was used.
The heat generating layer 22 is formed by spreading it to a thickness of mm.

A non-woven fabric having a porosity of about 80% is used for the ventilation layer 23, and this non-woven fabric is used as the heat generating layer 2 described above.
The air-permeable layer 23 is formed on the upper surface of the second layer 2.

As the airtight film 30, a polyethylene film laminated with an aluminum film is used, and the aluminum film in the airtight film 30 is positioned on the heating pad material 20 side so that the container body 10 is closed. It is made to be releasably adhered to the brim portion 12 of. Note that the airtight film 30 is not limited to the above-mentioned one, and may be made of a paper laminated with an aluminum film, or may be made of only an aluminum film, which is known in the art. Can be used as is.

In order to manufacture the portable heating pad A1 of Example 1, first, the gel composition described above is placed in the recess 11 of the container body 10 at a height (about 2/3) of the depth thereof. It is filled up to a thickness of 4 mm) to form the water-retaining gel layer 21.

Next, on the surface of the water-retaining gel layer 21, the exothermic composition is spread to a thickness of about 2 mm, leaving the peripheral wall peripheral portion of the recess 11, to form the exothermic layer 22.

Thereafter, the above-mentioned non-woven fabric is covered and pressed on the above-mentioned heat-generating layer 22, and at the same time, the peripheral portion of this non-woven fabric is caught in the water-retaining gel layer 21 exposed around the heat-generating layer 22, and the ventilation layer is formed. 23 is formed, and the heating layer 22 is fixed between the ventilation layer 23 and the water-retaining gel layer 21, so that the thermal pad material 20 is housed in the recess 11 of the container body 10.

Then, the airtight film 30 is covered so as to close the opening of the recess 11 of the container body 10 in which the heating pad material 20 is accommodated, and the air in the recess 11 is exhausted or nitrogen gas is supplied into the recess 11. By introducing
The interior of the container body 1 is deoxidized and the airtight film 30 is attached.
It is releasably adhered to the collar portion 12 of 0.

Further, the portable thermal pad A of the first embodiment
In using 1, the airtight film 30 described above is used.
The end portion of the container is pulled and pulled, the airtight film 30 is peeled from the flange portion 12 of the container body 10, and the recess 11 of the container body 10 is opened.

Next, the thermal pad material 20 contained in the recess 11 is taken out, the water retention gel layer 21 of the thermal pad material 20 is adhered to the target site of the body, and the thermal pad material 20 is attached thereto. . At this time, since the water-retaining gel layer 21 is composed of the gel composition described above, the water-retaining gel layer 21 has a sufficiently strong adhesive force to the body and is excellent in water retention and heat resistance.

Further, air is introduced to the heat generating layer 22 through the ventilation layer 23 of the heat pad material 20, and since the heat generating layer 22 receives the water supply from the water retaining gel layer 21, the heat is generated. The exothermic composition in layer 22 produces heat due to the contact of moisture with air.

When the heat-generating composition in the heat-generating layer 22 generates heat in this way, this heat is transmitted to the water-retaining gel layer 21 to warm the water-retaining gel layer 21, and this heat is transmitted to the target site of the body, The target area of is heated. In addition,
Since the water-retaining gel layer 21 contains a large amount of water, the temperature of the water-retaining gel layer 21 does not suddenly rise and does not become hot, and water having a large specific heat serves as the heating medium. Therefore, the water-retaining gel layer 21 that has been once warmed is difficult to cool, and therefore, a comfortable warm state can be maintained for a long time.

Further, the heating pad material 20 taken out from the container body 10 can be flexed as a whole as shown in FIG. 2, so that the portion along any part of the body having any curvature can follow the part. In this way, it can be properly applied, and it can be strongly applied to the target part of the body, and even if the amount of exercise in the applied part increases, the heating pad material 2
0 does not come off from the attachment site.

When the exothermic reaction proceeds in the exothermic layer 22, the exothermic composition hardens and the exothermic layer 22 itself becomes hard, but the water-retaining gel layer 21 has a considerable thickness and elasticity, The rigidity of the heat generating layer 22 can be appropriately absorbed, and the thermal pad material 20 is also prevented from peeling from the body during use.

Further, even when the exothermic reaction proceeds in the exothermic layer 22 and the exothermic composition solidifies and the exothermic layer 22 itself becomes hard as described above, the heating pad material 20 is appropriate along the attachment site of the body. As shown in FIG. 3, the heating layer 22 of the thermal pad material 20 is provided with cut grooves 22a so as to be maintained in the state of being stuck to the heat pad material 20, and the heat generating layer 22 is subdivided in the cut groove 22a. It is also possible for the thermal pad material 20 to be along the attachment site of the body. Even if the heat generating layer 22 is thus subdivided, the heat generating composition in the heat generating layer 22 leaks out because the heat generating layer 22 is surrounded by the water retaining gel layer 21 and the ventilation layer 23. There is no.

In the first embodiment, the water-retaining gel layer 21 in the thermal pad material 20 is made of only the gel composition as described above. However, the gel composition may have aroma oil or pharmacological properties. As shown in FIG. 4, the active substance is contained therein, or the water-retaining gel layer 21 is prepared by adding an aroma oil or a pharmacologically active substance to the first gel layer 21a composed only of the gel composition and the gel composition. Second gel layer 21
When configured as a laminated body in which b and b are laminated, the water retention gel layer 21
These are gradually transmitted to the target part of the body with heat,
In addition to the heating effect, the effects of aroma oil and pharmacologically active substances can be obtained.

Further, in the first embodiment, in order to facilitate the movement of the liquid inside the water-retaining gel layer 21, as shown in FIG.
21c having at least a hydrophilic surface inside the fiber
May be dispersed.

[Embodiment 2] FIG. 6 shows an exploded sectional view of the portable heating pad A2 of Embodiment 2, and FIG. 7 shows a schematic sectional view of the portable heating pad A2 of Embodiment 2. As shown in FIG.

Here, the difference between the portable heating pad A2 of the second embodiment and the portable heating pad A1 of the first embodiment will be described, and the description of the same configuration will be omitted.

In the portable heating pad A2 according to the second embodiment, a further recessed step portion 11a is formed on the bottom surface of the recess 11 of the container body 10 for accommodating the heating pad material 20.

Then, the ventilation layer 23 made of a non-woven fabric is provided along the bottoms of the stepped portion 11a and the recessed portion 11 as described above, and the ventilation layer 23 of the above-mentioned stepped portion 11a is provided. The exothermic composition is spread over the exothermic layer 22.
To form.

Next, a gel composition is filled on the heat generating layer 22 to form a water retaining gel layer 21, and the water retaining gel layer 21 is adhered to the peripheral portion of the ventilation layer 23 where the heat generating layer 22 is not provided. The heating pad material 20 is accommodated in the recess 11 of the container body 10 so that the heating layer 22 is fixed between the water-retaining gel layer 21 and the ventilation layer 23.

After that, the airtight film 30 is covered so as to close the opening of the recess 11 of the container body 10 in which the heating pad material 20 is housed, and the air in the recess 11 is exhausted or the recess 11 is filled with nitrogen. Recess 1 by introducing gas
The interior of the container 1 is deoxidized, and the airtight film 30 is releasably adhered to the flange 12 of the container body 10.

Also in the portable heating pad A2 of the second embodiment, the airtight film 30 is peeled from the flange portion 12 of the container body 10 to form the recess 1 of the container body 10.
1 is opened, the thermal pad material 20 contained in the recess 11 is taken out, the water-retaining gel layer 21 of the thermal pad material 20 is adhered to the target site of the body, and the thermal pad material 20 is attached thereto. To do. By doing so, the same effect as that of the first embodiment can be obtained. Note that, also in the portable heating pad A2 of the second embodiment, the same changes as those performed in the portable heating pad A1 of the first embodiment can be made.

[Third Embodiment] FIG. 8 shows a schematic sectional view of a portable heating pad A3 according to a third embodiment.

Here, in the portable heating pad A3 of the third embodiment, the portable heating pad A of the first embodiment described above is used.
As in the case of No. 1, the thermal pad material 20 is accommodated in the recess 11 of the container body 10.

The recess 1 of the container body 10 is thus
1 is placed in the bag body 40 with the thermal pad material 20 accommodated therein, and the air inside the bag body 40 is exhausted or nitrogen gas is introduced into the bag body 40 to deoxidize the inside of the bag body 40. Then, the bag 40 is sealed.

The portable thermal pad A according to the third embodiment.
When using 3, open the bag 40,
After taking out the container body 10 accommodating the thermal pad material 20 from the bag body 40, the recess 11 of the container body 10 is removed.
The above-mentioned thermal pad material 20 housed inside is taken out, the water retention gel layer 21 of this thermal pad material 20 is adhered to the target site of the body, and the thermal pad material 20 is attached thereto. By doing so, the same effect as that of the first embodiment can be obtained. Note that, also in the portable heating pad A3 of the third embodiment, the same changes as those performed in the portable heating pad A1 of the first embodiment can be made.

[Embodiment 4] FIG. 9 shows a schematic sectional view of a portable heating pad A4 of Embodiment 4.

Here, in the portable heating pad A4 of the fourth embodiment, the portable heating pad A of the second embodiment described above is used.
Similar to the case of 2, the container main body 10 in which the concave portion 11a is further provided on the bottom surface of the concave portion 11 is used, and in the concave portion 11 of the container main body 10, in the same manner as in the case of the second embodiment described above. The heating pad material 20 is contained.

Then, in this way, the concave portion 1 of the container body 10
1 is placed in the bag body 40 with the thermal pad material 20 accommodated therein, and the air inside the bag body 40 is exhausted or nitrogen gas is introduced into the bag body 40 to deoxidize the inside of the bag body 40. Then, the bag 40 is sealed.

Further, the portable thermal pad A of the fourth embodiment
When using 4, the bag 40 is opened,
After taking out the container body 10 accommodating the thermal pad material 20 from the bag body 40, the recess 11 of the container body 10 is removed.
The above-mentioned thermal pad material 20 housed inside is taken out, the water retention gel layer 21 of this thermal pad material 20 is adhered to the target site of the body, and the thermal pad material 20 is attached thereto. By doing so, the same effect as that of the first embodiment can be obtained. Note that, also in the portable heating pad A4 of the fourth embodiment, the same changes as those performed in the portable heating pad A1 of the first embodiment can be made.

[Embodiment 5] FIG. 10 is a schematic cross-sectional view of the portable heating pad A5 of Embodiment 5, and FIG. 11 shows the heating pad material 20 of the portable heating pad A5 of Embodiment 5 in the recess 11 of the container body 10. The schematic sectional drawing of the state taken out from is shown.

Here, also in the portable heating pad A5 of the fifth embodiment, in the same manner as in the first embodiment,
A heating pad material 20 composed of a water retention gel layer 21, a heat generating layer 22, and a ventilation layer 23 is housed in the recess 11 of the container body 10,
In this state, the opening of the recess 11 of the container body 10 is covered so as to close it, the inside of the recess 11 is deoxidized, and the airtight film 30 is releasably adhered to the flange portion 12 of the container body 10.

In the portable thermal pad A5 of the fifth embodiment, a part of the above-mentioned thermal pad material 20 of the thermal pad material 20 is exposed to the outside of the water retaining gel layer 21 as a header portion 24a and the remaining portion 24b is formed. Is provided with a pad material extraction member 24 that engages with the water retention gel layer 21.

Here, as the pad material take-out member 24, one whose surface is made of hydrophilic rayon fiber is used, and the header portion 24a exposed to the outside of the water-retaining gel layer 21 is bent to form the ventilation layer 23. While the opening of the recess 11 is located between the airtight film 30 that covers and seals, the remaining portion 24b that engages with the water retention gel layer 21 is formed in a net shape so as to spread in the water retention gel layer 21. .

When using the portable heating pad A5 of this Example 5, the above-mentioned airtight film 3 is used.
0 is peeled off from the collar portion 12 of the container body 10 to open the recess 11 of the container body 10, and as shown in FIG. 11, the header portion 24a of the pad material take-out member 24 is pulled to remove the water retention gel layer 21. The thermal pad material 20 accommodated in the recess 11 is taken out through the pad material take-out member 24 while the thermal pad material 20 is held by the remaining portion 24b that engages with the water-holding gel layer in the thermal pad material 20. 21 is adhered to the target site of the body, and the thermal pad material 20 is attached thereto. In this way, the container body 1
The thermal pad material 20 can be easily taken out from the recess 11 of 0, and the water retention gel layer 21 can be taken out and attached without touching it, which is hygienic.

The portable heating pad A according to the fifth embodiment.
Also in No. 5, the portable thermal pad A1 of Example 1 described above.
It is possible to make the same changes as those made in the above, and it is also possible to seal the bag 40 in a deoxidized state.

[Sixth Embodiment] FIG. 12 is a schematic cross-sectional view of the portable heating pad A6 of the sixth embodiment, and FIG. 13 is a schematic view of the portable heating pad A6 of the sixth embodiment in which the heating pad material 20 is provided in the recess 11 of the container body 10. The schematic sectional drawing of the state taken out from is shown.

Here, in the portable heating pad A6 of the sixth embodiment, as shown in FIG. 12, the heating pad material 2 is used.
When storing 0 in the recess 11 of the container body 10, the ventilation layer 23, the heat generating layer 22, and the water-retaining gel layer 21 are laminated in this order from the bottom surface side of the recess 11, and the thermal pad material 20 is attached to the container body 10. The airtight film 30 is releasably adhered to the flange portion 12 of the container body 10 so as to cover and seal the opening of the recess 11 of the container body 10 in the state of being housed in the recess portion 11.

In the portable heating pad A6 of the sixth embodiment, the ventilation layer 23 of the heating pad material 20 is provided along the inner surface of the recess 11 of the container body 10, and the ventilation layer 23 is The portion is extended from the concave portion 11 to form a header portion 23a, and the header portion 23a is bent and positioned between the water-retaining gel layer 21 and the airtight film 30 that covers and seals the opening of the concave portion 11.

In using the portable heating pad A6 of this Example 6, the above-mentioned airtight film 3 is used.
0 is peeled off from the flange portion 12 of the container body 10 to open the recess 11 of the container body 10, and as shown in FIG. 13, the header portion 23a of the ventilation layer 23 is pulled, and the recess portion is inserted through the ventilation layer 23. The thermal pad material 20 contained in 11 is taken out, the water retention gel layer 21 of the thermal pad material 20 is adhered to the target site of the body, and the thermal pad material 20 is attached thereto. In this way, the thermal pad material 20 can be easily taken out from the recessed portion 11 of the container body 10, and the water retention gel layer 21 can be taken out and attached without touching it, which is hygienic.

The portable thermal pad A according to the sixth embodiment.
Also in No. 6, the portable thermal pad A1 of Example 1 described above.
It is possible to make the same changes as those made in the above, and it is also possible to seal the bag 40 in a deoxidized state.

[Embodiment 7] FIG. 14 is an exploded sectional view of the portable heating pad A7 of Embodiment 7, and FIG. 15 is a schematic sectional view of the portable heating pad A7 of Embodiment 7 in which the heating pad material 20 is used. The figure is shown.

In the portable heating pad A7 according to the seventh embodiment, as shown in FIG. 14, the container body 10 has a recess 11 for accommodating the heating pad material 20 and a flange 12 protruding around the opening of the recess 11. In addition to the above, an outer recess 13 having a quadrangular planar shape is formed on the bottom surface of the recess 11 so as to project toward the opening side at a depth equal to or less than the depth of the recess 11.

In addition, the thermal pad material 20 is attached to the water retention gel layer 2
1 and the heat generating layer 22 and the ventilation layer 23, and as in the case of the above-described fifth embodiment, a part is exposed to the outside of the water retaining gel layer 21 as the header portion 24a and the remaining portion 24b is the water retaining gel layer 21. A pad material take-out member 24 that engages with
Further, on the bottom surface of the water retention gel layer 21, the external recess 1
A recess 21c corresponding to No. 3 is provided. As in the case of the above-mentioned fifth embodiment, as the pad material extracting member 24, one having a surface made of hydrophilic rayon fiber is used, and the header portion 24a exposed to the outside of the water retention gel layer 21 is used.
Is positioned between the breathable layer 23 and the airtight film 30 that covers and seals the opening of the recessed portion 11, while the remaining portion 24b that engages with the water retention gel layer 21 is formed in a net shape. It is provided so as to spread inside.

Then, the thermal pad material 20 is housed in the recess 11 of the container body 10 by fitting the external recess 13 into the recess 21c on the bottom surface of the water retention gel layer 21, and at the same time, the pad material removing member 24 Header part 24
a is bent and positioned on the ventilation layer 23, and in this state, the airtight film 30 is covered so as to close the opening of the recess 11 of the container body 10 in which the heating pad material 20 is housed, and the air in the recess 11 is closed. Is evacuated or nitrogen gas is introduced into the recess 11 to make the interior of the recess 11 in a deoxidized state, and the airtight film 30 is detachably adhered to the flange 12 of the container body 10 to remove the pad material removing member 24. Header part 2
4a is located between the breathable layer 23 and the airtight film 30.

In addition, the water-retaining gel body 50 held by the second airtight film 51 is housed in the outer recess 13 of the container body 10, and the outer recess is formed in the second airtight film 51. The opening of the outer recess 13 is covered and sealed by peelably adhering around the opening of the place 13.
Here, as the water-retaining gel body 50, a gel composition containing an aroma oil or a pharmacologically active substance is used.

When using the portable heating pad A7 of this Example 7, the above-mentioned airtight film 3 is used.
0 is peeled off from the flange portion 12 of the container body 10 to open the concave portion 11 of the container body 10, and the pad material extracting member 2
4 is pulled, and the thermal pad material 20 is held by the remaining portion 24b that engages with the water-retaining gel layer 21, and the thermal pad material is accommodated in the recess 11 via the pad material extracting member 24. 20 is taken out and is peeled off to the second airtight film 51 adhered around the opening of the external recess 13 to take out the water-retaining gel body 50 from the external recess 13.

Next, the water-retaining gel body 50 thus taken out is housed in the recess 21c provided in the bottom surface of the water-retaining gel layer 21 of the above-mentioned thermal pad material 20, and the water-retaining gel body 50 is removed. 2 The airtight film 51 is peeled off, and in this state, the water retention gel layer 21 of the thermal pad material 20 is adhered to the target site of the body, and the thermal pad material 20 is attached thereto.

By doing so, the above water-retaining gel body 5 is obtained.
The aroma oil and the pharmacologically active substance contained in 0 are gradually transmitted to the target part of the body with heat, and the effect due to the aroma oil and the pharmacologically active substance can be obtained together with the thermal effect.

Incidentally, the external recess 13 and the water-retaining gel layer 2 described above.
The planar shape and the like of the recess 21c of No. 1 and the water-retaining gel body 50 are not particularly limited, and can be changed to various shapes. Further, when the outer recess 13 is formed so as to expand toward the inside rather than the opening portion, and the recess 21c of the water retention gel layer 21 and the water retention gel body 50 are correspondingly formed, the water retention gel is formed. The water-retaining gel body 50 is reliably held in the recess 21c of the layer 21.

[Embodiment 8] FIG. 16 shows a schematic sectional view of the portable heating pad A8 of Embodiment 8, and FIG. 17 shows the heating pad material 20 taken out from the container body 10 in the portable heating pad A8 of Embodiment 8. The schematic sectional drawing of is shown.

The portable heating pad A8 of this Example 8 also
Similar to the portable heating pad A1 of the first embodiment, the container body 10 and the heating pad material 20 filled and housed in the container body 10.
And an airtight film 30 that hermetically seals the heating pad material 20 in the container body 10.

Here, in the portable heating pad A8 of the eighth embodiment, as shown in FIG. 16, the container body 10 has a recess 11 for accommodating the heating pad material 20 and an opening around the recess 11. In addition to the protruding flange portion 12, a large number of convex portions 14 protruding from the bottom surface of the concave portion 11 toward the opening side are formed.

Then, the gel composition is filled in the concave portion 11 of the container body 10 in which the large number of convex portions 14 are formed as described above to form the water-retaining gel layer 21, and a nonwoven fabric is formed on the water-retaining gel layer 21. The heating layer 22 is provided via the breathable sheet 26 such as the above, and the ventilation layer 23 is further provided on the heating layer 22 so that the thermal pad material 20 is housed in the recess 11 of the container body 10.

Next, with the thermal pad material 20 housed in the recess 11 of the container body 10 as described above, the airtight film 30 is covered so as to close the opening of the container body 10, and the air in the recess 11 is closed. By evacuating or introducing nitrogen gas into the recess 11, the interior of the recess 11 is deoxidized, and the airtight film 30 is releasably adhered to the flange 12 of the container body 10.

Further, the portable thermal pad A according to the eighth embodiment.
8 is used, the airtight film 30 described above is used.
The end portion of the container is pulled and pulled, the airtight film 30 is peeled from the flange portion 12 of the container body 10, and the recess 11 of the container body 10 is opened.

Then, the thermal pad material 20 contained in the recess 11 is taken out, the water-retaining gel layer 21 is adhered to the target site of the body, and the thermal pad material 20 is attached to the target site.

Here, in the water-retaining gel layer 21 of the above-mentioned thermal pad material 20, the above-mentioned numerous convex portions 1 protruding from the bottom surface of the concave portion 11 of the container body 10 toward the opening side.
Corresponding to No. 4, a large number of holes 25 penetrating the water-retaining gel layer 21 in the thickness direction are formed, and the heat from the heat-generating layer 22 is generated from the breathable sheet 26.
Through 5, it can be quickly and efficiently transmitted to the attachment site. Further, since the heat generating layer 22 is provided via the breathable sheet 26 as described above, the heat generating composition used for the heat generating layer 22 does not drop off to the attachment site through the hole 25.

[0115]

As described above in detail, in the portable heating pad according to the present invention, the heating pad material in which the ventilation layer, the heating layer and the water-retaining gel layer are integrally formed is housed in the recess of the container body. Since the opening of the recess is covered and sealed with an airtight film or bag so that the inside of the recess is kept in a deoxidized state, it is possible to prevent the moisture contained in the thermal pad material from evaporating in this state. In addition, the heat generation layer is prevented from generating heat by itself, and it can be suitably used as a portable device and can be stored for a long period of time.

Then, the airtight film is peeled off or the bag is opened, the thermal pad material is pulled out from the recess of the container body, and the water-retaining gel layer of the thermal pad material is attached to the skin at the application site. And, since the water-retaining gel layer has a considerable thickness and has adhesiveness and elasticity, even if the site to be attached has a considerable curvature, it can be attached along the shape thereof, Further, even when the part frequently undergoes movements such as expansion and contraction / bending, it is possible to follow it, and the thermal pad material can be stably attached to various parts.

When the heating pad material is applied in this manner, air is guided to the heat generating layer through the ventilation layer to generate heat in the heat generating layer, and this heat heats the water retaining gel layer. Since heat is transferred to the skin at the application site through the layers, it is possible to prevent high heat from being transferred directly to the skin at the application site, and the warm water retention gel layer retains the amount of heat obtained for a long time and is comfortable for a long time. A thermal stimulus can be given to the skin.

A pad material take-out member may be provided, a part of which is exposed to the outside of the water-retaining gel layer as a header portion and the rest of which is attached to the water-retaining gel layer. By forming a protrusion, these header parts can be grasped and the thermal pad material can be easily taken out from the recessed part of the container body, and the header part can be easily attached while sticking to the attachment target site while hanging. Target.

When the entire periphery of the water-retaining gel layer in the above-mentioned thermal pad material and the ventilation layer are directly adhered and the heat-generating layer is enclosed between the water-retaining gel layer and the ventilation layer, the heat-generating composition in the heat-generating layer is obtained. It also prevents objects from leaking.

When the water-retaining gel layer of the above-mentioned thermal pad material contains an aroma oil or a pharmacologically active substance,
These are gradually transmitted to the target part of the body from the water-retaining gel layer with heat, and the effect due to the aroma oil and the pharmacologically active substance is obtained together with the heat effect.

Further, the water-retaining gel layer is formed into a laminated body of gel sublayers so that the components contained in each gel sublayer may be different, or external recesses may be provided in the recesses of the container body, and various external recesses may be provided in the external recesses. By accommodating the water-retaining gel body containing the component of (1) and incorporating this water-retaining gel body in the water-retaining gel layer, a thermal pad material having various functions can be easily obtained.

[Brief description of drawings]

FIG. 1 is a schematic sectional view of a portable heating pad according to a first embodiment of the present invention.

FIG. 2 shows the portable thermal pad according to the first embodiment,
It is a schematic sectional drawing which showed the state which uses a heating pad material.

FIG. 3 is a schematic cross-sectional view of a modification of the heating pad material used for the portable heating pad according to the first embodiment, in which a cut groove is provided in the heating layer.

FIG. 4 is a thermal pad material used in the portable thermal pad of Example 1 described above, wherein the water-retaining gel layer comprises a first gel layer consisting only of the gel composition and the gel composition containing an aroma oil or a pharmacologically active substance. It is a schematic sectional drawing of the modification which comprised the laminated body which laminated | stacked the made 2nd gel layer.

FIG. 5 is a schematic cross-sectional view of a modification example in which a fiber group having at least a hydrophilic surface is dispersed inside the water-retaining gel layer in the heating pad material used for the portable heating pad of Example 1 described above. .

FIG. 6 is an exploded sectional view of a portable heating pad according to a second embodiment of the present invention.

FIG. 7 is a schematic cross-sectional view of the portable heating pad of Example 2 described above.

FIG. 8 is a schematic sectional view of a portable heating pad according to a third embodiment of the present invention.

FIG. 9 is a schematic cross-sectional view of a portable heating pad according to Example 4 of the present invention.

FIG. 10 is a schematic sectional view of a portable heating pad according to a fifth embodiment of the present invention.

FIG. 11 is a schematic cross-sectional view showing a state in which the heating pad material is taken out from the recess of the container body in the portable heating pad according to the fifth embodiment.

FIG. 12 is a schematic sectional view of a portable heating pad according to Example 6 of the present invention.

FIG. 13 is a schematic cross-sectional view showing a state in which the heating pad material is taken out from the recess of the container body in the portable heating pad according to the sixth embodiment.

FIG. 14 is an exploded sectional view of a portable heating pad according to Example 7 of the present invention.

FIG. 15 is a schematic cross-sectional view showing a state in which a heating pad material is used in the portable heating pad of Example 7 described above.

FIG. 16 is a schematic sectional view of a portable heating pad according to Example 8 of the present invention.

FIG. 17 is a schematic cross-sectional view showing a state in which a heating pad material is used in the portable heating pad of Example 8 described above.

[Explanation of symbols]

A1-A7 Portable thermal pad 10 container body 11 recess 12 collar part 13 External recess 14 convex 20 Thermal pad material 21 Water retention gel layer 21a First gel layer 21b Second gel layer 21c recess 22 Heating layer 23 Ventilation layer 23a header part 24 Pad material extraction member 24a header part 24b remainder 25 Holes penetrating the water-retaining gel layer in the thickness direction 26 Breathable sheet 30 Airtight film 40 bags 50 water retention gel body 51 Second Airtight Film

Claims (17)

[Claims] 1. A container main body having a recess and a flange portion projecting around the opening of the recess, a thermal pad material housed in the recess of the container main body, and the thermal pad material in the container main body. And an airtight film releasably attached to the flange so as to cover and seal the opening of the recess in a state of being housed in the recess, and the heating pad material contains a water-soluble polymer and water. A water-retaining gel layer in which the gel composition which can be gelled and has an adhesive property after gelation is filled in the above-mentioned recess with a predetermined thickness, and a heat-generating layer containing a heat-generating composition laminated on the water-retaining gel layer, A portable type characterized in that an air-permeable air-permeable layer that covers the heat-generating layer is integrally formed, and the inside of the recessed part that is sealed by the air-tight film is maintained in a deoxidized state. Thermal pad. 2. A container main body having a recess and a flange portion projecting around the opening of the recess, a heating pad material accommodated in the recess of the container main body, and the thermal pad material in the container main body. An airtight film releasably attached to the flange so as to cover and seal the opening of the recess in a state of being housed in the recess, and the heating pad material is provided on the bottom surface side of the recess. An air-permeable air-permeable layer, a heat-generating layer containing a heat-generating composition laminated on this gas-permeable layer, and a water-soluble polymer and water laminated on this heat-generating layer, which can be gelated and are adhesive after gelation. And a water-retaining gel layer having a gel composition having the property of being integrally formed, and the inside of the recess closed by the airtight film is maintained in a deoxidized state, which is a portable type. Thermal pad. 3. A container main body having a concave portion and a flange portion provided so as to project around the opening of the concave portion, a thermal pad material accommodated in the concave portion of the container main body, and the thermal pad material in the container main body. It is composed of an openable bag body that seals these in the state of being housed in the recess, and the above-mentioned thermal pad material is
A gel composition containing a water-soluble polymer and water and capable of gelling and having adhesiveness after gelation is laminated on the water-retaining gel layer in which the above-mentioned recesses are filled with a predetermined thickness, and on the water-retaining gel layer. A portable type in which an exothermic layer containing an exothermic composition and an air-permeable ventilation layer covering the exothermic layer are integrally formed, and the bag body is maintained in a deoxidized state. Thermal pad. 4. A container main body having a concave portion and a flange portion projecting around the opening of the concave portion, a heating pad material housed in the concave portion of the container main body, and the thermal pad material in the container main body. It is composed of an openable bag body that seals these in the state of being housed in the recess, and the above-mentioned thermal pad material is
An air-permeable ventilation layer provided on the bottom surface side of the recess, and a heat-generating layer containing a heat-generating composition laminated on the ventilation layer,
The water-retaining gel layer having a gel composition containing a water-soluble polymer and water, which is laminated on the heat-generating layer and which can be gelated and has adhesiveness after gelation, is integrally configured, A portable thermal pad, characterized in that is maintained in a deoxidized state. 5. The heat-generating layer is formed by filling the heat-generating composition in the open-cells of a soft sheet-shaped resin foam having open-cells. The portable thermal pad described in item 1. 6. The water retaining gel layer of the thermal pad material has a pad material extracting member, a part of which is exposed to the outside of the water retaining gel layer as a header portion, and the rest is attached to the water retaining gel layer. The portable heating pad according to any one of claims 1 to 5, characterized in that. 7. The ventilation layer in the thermal pad material,
The portable heating pad according to claim 2 or 4, wherein the portable heating pad is formed in a concave shape along the inner surface shape of the concave portion of the container body. 8. The portable heating pad according to claim 2, wherein a part of the ventilation layer in the heating pad material is formed as a header portion so as to project. 9. The heat-permeable pad material, wherein the entire periphery of the ventilation layer is directly adhered to the water-retaining gel layer, and the heat-generating layer is enclosed between the air-permeable layer and the water-retention gel layer. The portable heating pad according to any one of claims 1 to 8. 10. The external recess that protrudes toward the opening side at a depth not greater than the depth of the recess is formed on the bottom surface of the recess in the container body. The portable heating pad described in. 11. The water-retaining gel layer of the thermal pad material,
The portable heating pad according to any one of claims 1 to 10, which contains at least one of an aroma oil and a pharmacologically active substance. 12. The portable thermostat according to claim 1, wherein the water-retaining gel layer of the thermal pad material is composed of a laminated body of a plurality of gel sublayers. pad. 13. Each of the gel sublayers comprises a gel composition or the gel composition containing at least one of an aroma oil and a pharmacologically active substance, and adjacent gel sublayers are different from each other. The portable heating pad according to claim 12, which has a configuration. 14. The water-soluble polymer used in the water-retaining gel layer is polyacrylic acid, a salt of polyacrylic acid, polyglutamic acid, a salt of polyglutamic acid, a partially neutralized product of polyacrylic acid, or a part of polyglutamic acid. Japanese one, a mixture of one or more selected from the group consisting of curcomannan, locust bean gum, tamarind gum, polyvinyl alcohol, gelatin, sodium carboxymethyl cellulose, carrageenan, sodium alginate, carboxyvinyl polymer and graft starch The portable heating pad according to any one of claims 1 to 13, characterized in that. 15. The water-soluble polymer used in the water-retaining gel layer is a partially neutralized product of polyacrylic acid, sodium alginate, and at least one selected from polyvinyl alcohol, carboxyvinyl polymer, and sodium carboxymethylcellulose. The portable heating pad according to claim 14, wherein the portable heating pad comprises a mixture of 16. The exothermic composition used for the exothermic layer comprises:
The mobile phone according to any one of claims 1 to 15, which comprises iron powder and activated carbon or iron powder, activated carbon and an inorganic electrolyte as main components, and a solid component that generates heat when contacted with oxygen. Mold heating pad. 17. The portable heating pad according to claim 1, wherein a plurality of holes are formed through the water-retaining gel layer in the thickness direction thereof.