JPWO2017042947A1 - Heating tool - Google Patents

Abstract

An object of the present invention is to provide a heating tool that exhibits an excellent warm feeling and cool feeling and can effectively exert a warming action. In a heating device used by being attached to the skin, an adhesive containing (A) menthol and (B) ginger extract and / or camphor on the skin application surface to be applied to the skin of the container containing the heat generating part. By providing a layer, the synergistic action of (A) menthol and (B) ginger extract and / or camphor contained in the adhesive layer improves the cooling sensation and warm sensation exhibited, and is much superior. Can exert a thermal effect.

Description

  The present invention relates to a heating tool. More specifically, the present invention relates to a heating tool that exhibits an excellent warm feeling and cool feeling and can effectively exert a warming action.

  A heating device using a heat-generating composition that generates heat upon contact with air is widely used not only as a heat retention device for cold protection but also as a treatment device for blood circulation promotion and pain relief.

  When used as a therapeutic tool, the conventional heating tool has a drawback that it is felt as a hot feeling only in a hot feeling such as summer, and the feeling of use is deteriorated. Conventionally, it has been known that the thermal sensation of a heating tool can be controlled by adjusting the composition of the exothermic composition, the amount of oxygen inflow by the container containing the exothermic composition, and the like. In the control of warmth, it is possible to adjust the maximum temperature reached, the rate of temperature rise, the duration, etc., and it is not possible to reduce the hotness perceived in hot seasons such as summer.

  Thus, in recent years, heating tools have been developed that can reduce the feeling of heat by presenting a cool feeling. For example, Patent Document 1 reports that a heating tool containing a cooling sensation agent that imparts a refreshing feeling to an exothermic composition can perceive a refreshing feeling. Patent Document 2 reports that a heating tool in which a specific amount of a cooling sensate and a sesquiterpene hydrocarbon is blended in an exothermic composition can perceive warmth and coolness. Furthermore, Patent Document 3 discloses that a heating tool in which a specific amount of a monoterpenoid having a cyclic ether structure and a monoterpenoid having a cyclic ketone structure is blended in an exothermic composition is effective in changing the quality of cool feeling during storage. It is reported that it can prevent and maintain a refreshing feeling. However, as in Patent Documents 1 to 3, the technology of blending a cooling sensation agent or the like with the exothermic composition reduces the sense of warmth, making it impossible to achieve both excellent warmth and coolness. There are drawbacks. Further, in the heating tool, since the exothermic composition is contained in a container having air permeability, as in Patent Documents 1 to 3, in the heating tool in which a cooling sensation agent is blended in the exothermic composition, Since a part of the cooling sensation agent or the like is volatilized into the atmosphere through the ventilation holes of the container, there is also a disadvantage that the cooling sensation is low.

  In recent years, there has been an increasing demand for consumers to improve the functionality of heating tools, and there is an urgent need for the development of heating tools that can perceive both warmth and coolness and that can effectively exert warmth.

JP 2010-158507 A JP 2014-128467 A JP 2011-160885 JP

  An object of the present invention is to provide a heating tool that exhibits an excellent warm feeling and cool feeling and can effectively exert a warming action.

Means for Solving the Invention

  The present inventor has made extensive studies to solve the above problems, and in the heating tool used by being applied to the skin, on the skin application surface of the container containing the heat generating part, (A) menthol, And (B) by providing a pressure-sensitive adhesive layer containing ginger extract and / or camphor, a cooling effect exhibited by the synergistic action of (A) menthol and (B) ginger extract and / or camphor contained in the pressure-sensitive adhesive layer. It has been found that the feeling and warmth can be improved, and that the warming action can be remarkably improved. The present invention has been completed by further studies based on such knowledge.

That is, this invention provides the invention of the aspect hung up below.
Item 1. A fever used by being applied to the skin,
A heat generating part that generates heat to be transmitted to the skin;
A container containing the heat generating part and having a skin application surface to be applied to the skin;
An adhesive layer provided on the skin application surface side of the container,
The adhesive layer comprises (A) menthol, and (B) ginger extract and / or camphor,
A heating tool characterized by that.
Item 2. Item 2. The heating tool according to Item 1, wherein the packaging material constituting the skin application surface side of the container has a barrier function that blocks permeation of components contained in the adhesive layer.
Item 3. The packaging material constituting the skin application surface side of the container has a non-breathable resin layer, a vapor deposition film, or a metal foil film formed of polyethylene terephthalate, polyacrylonitrile, or ethylene-vinyl alcohol copolymer. The heating tool according to claim 2.
Item 4. Item 4. The heating tool according to any one of Items 1 to 3, comprising ginger extract and camphor as the component (B).
Item 5. Item 5. The heating tool according to any one of Items 1 to 4, wherein the menthol content in the adhesive layer is 0.1 to 10% by weight.
Item 6. Item 6. The heating tool according to any one of Items 1 to 5, wherein the ginger extract content in the adhesive layer is 0.01 to 3% by weight in terms of dry weight.
Item 7. Item 7. The heating tool according to any one of Items 1 to 6, wherein the content of camphor in the adhesive layer is 0.5 to 10% by weight.
Item 8. Item 8. The heating tool according to any one of Items 1 to 7, wherein the heat generating portion is a heat generating composition that generates heat by contact with oxygen, and the container has air permeability at least partially.
Item 9. Item 9. The heating tool according to any one of Items 1 to 8, wherein the adhesive layer is partially provided with respect to the skin application surface side of the container.

  According to the heating tool of the present invention, an excellent warm feeling and cold feeling are exhibited by the synergistic action of (A) menthol and (B) ginger extract and / or camphor contained in the adhesive layer. And can be used comfortably even in hot seasons and areas. Further, according to the heating tool of the present invention, the thermal action is improved by the synergistic action of (A) menthol and (B) ginger extract and / or camphor contained in the adhesive layer, promoting blood circulation, improving shoulder stiffness, It can also be suitably used as a treatment tool for the purpose of pain relief and the like.

It is the plane top view seen from the skin sticking surface side about the heating tool of the aspect by which the adhesion layer was provided in the stripe form on the surface of the water | moisture-content absorption layer. It is the plane schematic diagram seen from the skin sticking surface side about the heating tool of the mode in which the adhesion layer was provided in the shape of a dot on the surface of the moisture absorption layer. It is the plane schematic which looked at the heating tool of the aspect by which the adhesion layer was provided in the grid | lattice form on the surface of the water | moisture-content absorption layer seen from the skin sticking surface side. It is the plane schematic which looked at the heating tool of the aspect by which the adhesion layer was provided in the surface of the moisture absorption layer from the skin sticking surface side. It is the plane schematic diagram seen from the skin sticking surface side about the heating tool of the aspect by which the adhesion layer was provided in the frame shape on the surface of the moisture absorption layer. It is the schematic of the cross-sectional structure of one suitable form of the heating tool of this invention. In Test example 1, it is the result of having evaluated temporally about the warmth of the heating tool of Examples 1-3 and Comparative Examples 1-4. In Test example 1, it is the result of having evaluated temporally about the cooling sensation of the heating tool of Examples 1-3 and Comparative Examples 1-4. In Test Example 2, the skin temperature brought about by the heating tool of Example 1 and Comparative Example 1 was measured by infrared thermography. In Test example 3, it is the result of having evaluated the improvement effect of the low back pain by the heating tool of Example 1 and Comparative Example 1. FIG. In Test Example 4, the heating tools of Example 1 and Comparative Example 1 were attached, and the blood oxygenated hemoglobin concentration was measured over time. In Test Example 4, the heating tools of Example 1 and Comparative Example 1 were affixed, and the integrated value of the blood oxygenated hemoglobin concentration was calculated. In Test Example 5, the heating tools of Example 1 and Comparative Example 1 were subjected to a patch test and evaluated for safety.

  Moreover, since the treatment tool of the present invention has high safety, it can also be used on a daily basis for the purpose of heat insulation and treatment.

  The heating tool of the present invention includes a heat generating part 1 that generates heat to be transmitted to the skin, a container 2 that contains the heat generating part 1 and has a skin application surface that is applied to the skin, and a skin application surface side of the container. The adhesive layer 3 includes (A) menthol, and (B) ginger extract and / or camphor. Hereinafter, the heating tool of the present invention will be described in detail.

  In the present invention, “cool feeling” and “warm feeling” refer to senses related to coldness and warmth that are perceived when the heating tool is applied to the skin, respectively, and “thermal action” refers to the heating tool. This refers to the physiological effects (blood circulation promotion, stiff shoulder improvement, pain relief, etc.) brought about by the physical fever of the skin and the cold and warm feelings applied to the skin application site.

<Heat generation part 1>
The heating tool of the present invention includes a heating unit 1 that generates heat to be transmitted to the skin as a heating element. The heat generating unit 1 generates heat and plays a role of giving a warm feeling.

  The heat generating part 1 is not particularly limited as long as it can generate heat and transmit heat to the skin. For example, a heat generating composition that generates heat by contact with oxygen; Examples include a heating element that generates heat upon receiving microwave irradiation; a heating element that generates heat using a liquid, semi-solid, or solid heat storage material. Among these, the exothermic composition that generates heat upon contact with oxygen can be disposable, and is preferably used as the exothermic part 1 in terms of safety, exothermic efficiency, convenience, and the like.

  The composition of the exothermic composition that generates heat upon contact with oxygen is not particularly limited as long as it is conventionally used in a disposable body warmer or the like. A suitable example of the exothermic composition that generates heat upon contact with oxygen is a composition containing an oxidizable metal, an oxidation accelerator, and water.

  In the exothermic composition, the oxidizable metal is oxidized by contact with oxygen and serves as a heat source by oxidation heat. The type of oxidizable metal is not particularly limited as long as it can generate heat by oxidation. For example, iron (reduced iron, cast iron, atomized iron, electrolytic iron), aluminum, zinc, manganese, magnesium, calcium, etc. These metals are mentioned. These oxidizable metals may be used individually by 1 type, and may be used in combination of 2 or more type.

  In addition, the shape of the oxidizable metal is not particularly limited, but from the viewpoint of heat generation efficiency, it is preferably powder, granular or fibrous, and more preferably powder.

  Among these oxidizable metals, iron powder is preferably used from the viewpoints of safety, handleability, and the like.

  When the oxidizable metal is in a powder form, the particle diameter is not particularly limited, but for example, 0.01 to 1000 μm, preferably 0.1 to 500 μm, and more preferably 0.5 to 300 μm. Here, the particle size of the powdered oxidizable metal is a value measured in accordance with the “dry sieving test” defined in JIS 8815-1994 “General rules of sieving test method”.

  The content of the oxidizable metal in the exothermic composition is appropriately set according to the exothermic characteristics to be imparted, but is, for example, 20 to 80% by weight, preferably 25 to 70% by weight, and more preferably 30%. Up to 60% by weight.

  In the exothermic composition, the oxidation accelerator plays a role of holding oxygen and supplying oxygen to the oxidizable metal. The type of the oxidation accelerator is not particularly limited as long as it can hold oxygen and supply oxygen to the oxidizable metal. For example, activated carbon, carbon black, acetylene black, bamboo charcoal, charcoal, and coffee scum Carbon materials such as charcoal, graphite, coal, coconut shell charcoal, calendar bituminous coal, peat, and lignite. These oxidation promoters may be used alone or in combination of two or more.

  Among these oxidation promoters, preferably activated carbon, carbon black, bamboo charcoal, charcoal, coffee cascharcoal, and more preferably activated carbon.

  Further, the shape of the oxidation accelerator is not particularly limited, but from the viewpoint of heat generation efficiency, it is preferably powdery, granular or fibrous, and more preferably powdery.

  When the oxidation accelerator is in a powder form, the particle diameter is not particularly limited, and for example, 0.001 to 1000 μm, preferably 0.005 to 500 μm, and more preferably 0.01 to 200 μm. Here, the particle size of the powdered oxidation accelerator is a value measured according to the “dry sieving test” defined in JIS8815-1994 “General Rules for Sieving Test Methods”.

  About content of the oxidation accelerator in the said exothermic composition, although suitably set according to the exothermic characteristic etc. which should be provided, for example, 1 to 30 weight%, Preferably it is 3 to 25 weight%, More preferably, it is 5 to 5 weight%. 23% by weight.

  In the exothermic composition, the ratio between the oxidizable metal and the oxidation accelerator is appropriately set according to the exothermic characteristics to be imparted. For example, the oxidation accelerator per 100 parts by weight of the oxidizable metal. 2 to 60 parts by weight, preferably 5 to 50 parts by weight, and more preferably 10 to 40 parts by weight.

  In the exothermic composition, water plays a role of oxidizing the metal to be oxidized together with oxygen. About water, you may use any of distilled water, ion-exchange water, pure water, ultrapure water, tap water, industrial water, etc.

  The water content in the exothermic composition is appropriately set according to the exothermic characteristics to be imparted, but is, for example, 5 to 50% by weight, preferably 10 to 40% by weight, and more preferably 15 to 35% by weight. Can be mentioned.

  The exothermic composition may contain water-soluble salts, if necessary, in addition to the components described above. When water-soluble salts are contained, it becomes possible to promote oxidation of the oxidizable metal.

  The type of water-soluble salt is not particularly limited. For example, alkali metal (sodium, potassium, etc.), alkaline earth metal (calcium, magnesium, etc.), or heavy metal (iron, copper, aluminum, zinc, nickel, silver, Sulfate, hydrogen carbonate, chloride, hydroxide, etc.). Among these water-soluble salts, chlorides such as sodium chloride, potassium chloride, calcium chloride, magnesium chloride, and iron chloride (first and second) are more preferable from the viewpoint of conductivity, chemical stability, and the like. Examples include sodium chloride. These water-soluble salts may be used individually by 1 type, and may be used in combination of 2 or more type.

  When water-soluble salts are blended in the exothermic composition, the content thereof is appropriately set according to the exothermic characteristics to be imparted, for example, 0.1 to 10% by weight, preferably 0.5 to 7 weight%, More preferably, 1 to 5 weight% is mentioned.

  Moreover, the said exothermic composition may contain the water retention agent as needed. The water retention agent plays a role of holding water and supplying water to the oxidation reaction field.

  The type of water retention agent is not particularly limited. For example, vermiculite (meteorite), perlite, calcium silicate, magnesium silicate, kaolin, talc, smectite, mica, bentonite, calcium carbonate, silica gel, alumina, zeolite, dioxide Inorganic porous materials such as silicon and diatomaceous earth; organic materials such as pulp, wood flour, cotton, starches, and celluloses; polyacrylic acid resins, polysulfonic acid resins, maleic anhydride resins, polyacrylamide resins And water absorbing resins such as polyvinyl alcohol resins, polyethylene oxide resins, polyaspartic acid resins, polyglutamic acid resins, and polyalginic acid resins. These water retention agents may be used individually by 1 type, and may be used in combination of 2 or more type.

  Among these water retention agents, preferably vermiculite, polyacrylic acid resin wood flour, pulp; more preferably vermiculite, polyacrylic acid resin. In addition, when an inorganic porous material is used as a water retention agent, it is possible to secure an air flow path in the exothermic composition.

  Although it does not restrict | limit especially about the particle size of a water retention agent, For example, 0.1-3000 micrometers, Preferably it is 0.5-1000 micrometers, More preferably, it is 1-500 micrometers. Here, the particle size of the water retention agent is a value measured according to the “dry sieving test” defined in JIS 8815-1994 “General Rules for Sieving Test Methods”.

  When a water retention agent is blended in the exothermic composition, the content thereof is appropriately set according to the exothermic characteristics to be imparted, for example, 1 to 20% by weight, preferably 3 to 15% by weight, Preferably 5 to 10 weight% is mentioned.

  The exothermic composition may further contain other additives such as a sequestering agent, a fragrance, a thickener, an excipient, a surfactant, a hydrogen generation inhibitor, if necessary. .

  The exothermic composition can be prepared by mixing a predetermined amount of the aforementioned components. The exothermic composition may be prepared in the presence of oxygen, but is preferably prepared under reduced pressure or an inert gas atmosphere.

  The heat generating unit 1 is set so as to generate heat at an appropriate temperature when the heating tool of the present invention is applied to the skin. What is necessary is just to set suitably about the maximum skin temperature of the heating tool of this invention according to the skin site | part used as application object, the warm feeling which should be provided, a thermal effect, etc., for example, about 32-85 degreeC, Preferably it is 34- About 70 degreeC is mentioned. The maximum temperature reached is a value measured according to the method defined in JIS S4100: 2007.

<Container 2>
The heating tool of the present invention includes a housing 2 that houses the heat generating portion 1. Since the heating tool of the present invention is used by being attached to the skin, the container 2 has a skin application surface that is attached to the skin.

  The container 2 only needs to have a container 22 for housing the heat generating unit 1 and a skin application surface to be affixed to the skin, and a conventional one used as a container for a heating tool is used. be able to. Moreover, when using the exothermic composition which generate | occur | produces heat by contact with oxygen as the said heat generating part 1, the container 2 should just have air permeability in at least one part.

  In the container 2, the packaging material 21 (hereinafter also referred to as “skin application surface side packaging material”) disposed on the skin application surface side may be either breathable or non-breathable. It is preferably non-breathable.

  Further, in the case of the non-breathable skin application surface side packaging material 21, the structure is not particularly limited, but in the case of non-breathability, for example, a single-layer sheet made of the non-breathable resin layer 211, and A multilayer sheet including at least the air-impermeable resin layer 211 may be mentioned. In the skin attachment surface side packaging material 21, the non-breathable resin layer 211 plays a role of blocking air permeation and providing non-breathability, blocking moisture permeation and providing a moisture barrier function.

  The constituent resin of the non-breathable resin layer 211 used for forming the non-breathable skin application surface side packaging material 21 is not particularly limited, and examples thereof include a thermoplastic resin. Specific examples of the thermoplastic resin include polyethylene terephthalate, polyacrylonitrile, ethylene-vinyl alcohol copolymer, polyethylene, polypropylene, ethylene-vinyl acetate copolymer, polyamide, polyurethane, polystyrene, polyvinyl alcohol, polyvinyl chloride, poly Examples include vinylidene chloride and polycarbonate. Among these thermoplastic resins, polyethylene terephthalate, polyacrylonitrile, ethylene-vinyl alcohol copolymer, polyethylene, polypropylene, and ethylene vinyl acetate copolymer are preferable.

  The thickness per layer of the non-breathable resin layer 211 used for the formation of the non-breathable skin application surface side packaging material 21 is appropriately set according to the layer configuration of the skin adhesion surface side packaging material 21 and the like. For example, it may be 10 to 100 μm, preferably 15 to 70 μm, and more preferably 20 to 50 μm.

  In addition, as the skin application surface side packaging material 21 having a multilayer structure including at least the non-breathable resin layer 211, specifically, a laminated sheet in which two or more same or different non-breathable resin layers 211 are laminated, at least A laminated sheet in which the fiber base material 212 is laminated on the side of the one air-impermeable resin layer 211 that comes into contact with the skin can be given. The laminated sheet in which the fiber base material 212 is laminated on at least one non-breathable resin layer 211 improves the feeling of use when the heating tool of the present invention is applied to the skin, or the skin of the heating tool of the present invention. Since the temperature of the application surface can be adjusted, it can be suitably used as the non-breathable skin application surface side packaging material 21.

  Specific examples of the fiber base material 212 include a nonwoven fabric and a woven fabric. From the viewpoint of usability and the like, the fiber base material 212 is preferably a non-woven fabric. The material of the fiber base 212 is not particularly limited, but for example, synthetic fibers such as polyethylene terephthalate, polybutylene terephthalate, nylon, polypropylene, polyethylene, vinylon, rayon, acrylic, acetate, polyvinyl chloride; cotton, hemp, silk And natural fibers such as paper; and mixed fibers thereof. Among these materials, polyethylene terephthalate, nylon and polypropylene are preferable, and polyethylene terephthalate and nylon are more preferable from the viewpoint of enhancing the feeling of use.

The basis weight of the fiber base material 212 used for the formation of the non-breathable skin application surface side packaging material 21 may be set as appropriate according to the layer configuration of the skin application surface side packaging material 21. 10 to 100 g / m ^2, preferably 15~70g / m ^2, more preferably include 20 to 50 g / m ^2.

  Lamination of the non-breathable resin layer 211 and the fiber base material 212 and lamination of the resin layers 24a can be performed by a laminating method such as dry lamination, extrusion lamination, or heat lamination; extrusion coating;

  Moreover, it is preferable that the non-breathable skin application surface side wrapping material 21 has a barrier function that blocks the permeation of components contained in the adhesive layer 3. By having such a barrier function, it is possible to suppress the components contained in the adhesive layer 3 from penetrating into the container 2, to further improve the warm feeling and the cool feeling, and to exert the thermal effect remarkably. Is possible.

  In order to provide the skin patch surface side packaging material 21 with the barrier function, the non-breathable resin layer 211a is formed using a resin having the barrier function (hereinafter sometimes referred to as “barrier resin”). It can be performed by a method, a method of laminating a vapor deposition film or a metal foil film on the non-breathable resin layer 211, and the like.

  The type of the barrier resin is not particularly limited as long as it can block the permeation of the components contained in the adhesive layer 3, and examples thereof include polyethylene terephthalate, polyacrylonitrile, and ethylene-vinyl alcohol copolymer. Among these barrier resins, polyethylene terephthalate is preferable.

  Further, in the case of providing the non-breathable resin layer 211a formed of a barrier resin, the non-breathable resin layer formed of a thermoplastic resin that is further excellent in heat weldability with respect to the non-breathable resin layer 211a. It is desirable to laminate 211b. Specific examples of the thermoplastic resin having excellent heat weldability include polyethylene and polypropylene.

  The material constituting the vapor-deposited film is not particularly limited as long as it can block the permeation of components contained in the adhesive layer 3, but for example, metals such as aluminum, chromium, zinc, gold, silver, platinum, nickel; Examples thereof include inorganic oxides such as silicon, titanium oxide, aluminum oxide, and zirconium oxide; inorganic fluorides such as magnesium fluoride.

  The thickness of the vapor-deposited film is not particularly limited as long as it is within a range in which the permeation of the cooling sensation agent can be suppressed, and examples thereof include 50 to 5000 mm, preferably 100 to 1000 mm.

  The vapor deposition film can be formed by depositing the material on the air-impermeable resin layer 211 by a known vapor deposition method such as physical vapor deposition or chemical vapor deposition.

  Examples of the metal foil film include aluminum foil and stainless steel foil. Among these metal foils, aluminum foil is preferable.

  Although it does not restrict | limit especially about the thickness of the said metal foil film | membrane, For example, 5-50 micrometers, Preferably 5-15 micrometers is mentioned.

  The metal foil film can be laminated on the non-breathable resin layer 211 according to a known laminating method such as dry lamination, extrusion lamination, heat lamination or the like.

  Non-breathable resin formed of a thermoplastic resin (polyethylene and / or polypropylene) excellent in heat-weldability from the housing portion 22 side toward the adhesive layer 3 side as a suitable layer structure of the skin attachment surface side packaging material 21 A laminated structure in which a layer 211b, a non-breathable resin layer 211a formed of a barrier resin, and a fiber base material 212 are laminated in this order; polyethylene and / or from the container 22 side toward the adhesive layer 3 side Examples thereof include a laminated structure in which a moisture barrier impermeable resin layer 211b formed of polypropylene, a vapor deposition film or a metal foil film, and a fiber base material 212 are laminated in this order.

  Further, when making the skin application surface side packaging material 21 breathable, the layer structure, materials used, etc. are the same as in the case of the air permeability packaging material arranged on the side opposite to the skin application surface side. is there.

  In the container 2, the packaging material 23 (hereinafter also referred to as “non-skin application surface side packaging material”) disposed on the side opposite to the skin application surface side is the non-container of the container in the conventional heating tool. It can be formed of the same material as the skin-pasted side packaging material. If the exothermic composition that generates heat by contact with oxygen is used as the heat generating part 1, the non-skin application surface side packaging material 23 needs to have air permeability. If other than the exothermic composition is used, it may be either breathable or non-breathable.

  The non-skin-attached side packaging material 23 having air permeability can be formed by, for example, an air-permeable resin layer 231 and a fiber base material 232.

  The constituent resin of the breathable resin layer 231 used for forming the non-skin-attached side packaging material 23 having breathability is not particularly limited, and examples thereof include thermoplastic resins. Specific examples of the thermoplastic resin include polyethylene, polypropylene, ethylene-vinyl acetate copolymer, polyethylene terephthalate, polyacrylonitrile, ethylene-vinyl alcohol copolymer, polyamide, polyurethane, polystyrene, polyvinyl alcohol, polyvinyl chloride, poly Examples include vinylidene chloride and polycarbonate. Among these thermoplastic resins, polyethylene, polypropylene, and ethylene vinyl acetate copolymer are preferable.

  Specifically, the air-permeable resin layer 231 may be a resin film provided with pores for ensuring air permeability. What is necessary is just to set suitably about the shape of the pore provided in a resin film, a magnitude | size, and a number according to the air permeability which should be equipped with a container.

  The thickness of the breathable resin layer 231 may be set as appropriate according to the layer configuration of the non-skin-attached side packaging material 23, and is, for example, 15 to 150 μm, preferably 30 to 100 μm, and more preferably 50 to 50 μm. 80 μm may be mentioned.

  Specific examples of the fiber base material 232 used for the non-skin application surface side packaging material 23 include a nonwoven fabric and a woven fabric. From the viewpoint of usability and the like, the fiber base material 232 is preferably a non-woven fabric. The material of the fiber base material 232 is not particularly limited. For example, synthetic fibers such as polyethylene terephthalate, polybutylene terephthalate, nylon, polypropylene, polyethylene, vinylon, rayon, acrylic, acetate, and polyvinyl chloride; cotton, hemp, silk And natural fibers such as paper; and mixed fibers thereof. Among these materials, polyethylene terephthalate, nylon and polypropylene are preferable, and polyethylene terephthalate and nylon are more preferable from the viewpoint of enhancing the feeling of use.

The basis weight of the fiber base material 232 may be appropriately set according to the layer configuration of the non-skin adhesion surface packaging material, but for example, 1 to 100 g / m ^2, preferably from 5 to 70 g / m ^2, more preferably Is 10 to 50 g / m ² .

  Specifically, as the layer structure of the non-skin-attached side packaging material 23 having air permeability, a single-layer structure composed of the air-permeable resin layer 231 or the fiber base material 232; the air-permeable resin layer 231 and the fiber base material 232 Among them, a multilayer structure in which two or more of the same or different materials are combined is exemplified. From the viewpoints of improving the feeling of use, preventing leakage of the heat generating composition, and the like, preferably a single-layer structure composed of a breathable resin layer 231; the breathable resin layer 231 and the fiber substrate 232 from the inside of the container toward the outside. Are stacked in this order.

  Lamination of the air-permeable resin layer 231 and the fiber base material 232 can be performed by a known laminating method such as dry lamination, extrusion lamination, or heat lamination.

  Further, when the non-skin-applied surface-side packaging material 23 is made to be non-breathable, the layer structure, the material used, and the like may be the same as those of the non-breathable skin-applied surface-side packaging material 21. However, the non-breathable non-skin application surface side packaging material 23 does not need to be provided with a barrier function for blocking the permeation of components contained in the adhesive layer 3, and the vapor deposition film and the metal foil film need not be provided. Good.

  The container 2 used in the present invention is formed by laminating the skin application surface side wrapping material 21 and the non-skin application surface side wrapping material 23 around the region to be the storage portion 22 that stores the heat generating portion 1. Is done.

  The method for pasting the skin adhesive surface side packaging material 21 and the non-skin adhesive surface side packaging material 23 is not particularly limited. For example, the resin layer and / or the non-skin adhesive surface side included in the skin adhesive surface side packaging material 21 Examples thereof include a method of heat welding using a resin layer contained in the packaging material 23, a method of bonding using an adhesive, and the like.

When the exothermic composition that generates heat by contact with oxygen is used as the exothermic part 1, the amount of the exothermic composition that is accommodated in the accommodating part 22 of the container 2 is the skin site to be applied, the exothermic composition. What is necessary is just to set suitably according to the exothermic characteristic etc. of a composition, For example, the said exothermic composition is about 0.01-1.5 g per 1 cm < ² > of the accommodating part 22, Preferably it is about 0.05-1 g, More preferably, about 0.1-0.8g is mentioned.

  In the container 2 used in the present invention, the number of the accommodating parts 22 that accommodate the heat generating part 1 is not particularly limited, and may be one or plural. It is set appropriately according to Further, the size and shape of the accommodating portion 22 are not particularly limited, and may be appropriately set according to the shape of the skin site to be attached.

<Adhesion layer 3>
In the heating tool of the present invention, menthol (hereinafter also referred to as (A) component) and ginger extract and / or camphor (hereinafter referred to as (B) component) are applied to the skin application surface of the container 2. A pressure-sensitive adhesive layer 3 is provided. By providing such an adhesive layer 3, it is possible to simply attach the heating tool to a predetermined site on the skin without separately using a fixing tool for fixing the heating tool on the skin. Further, since the adhesive layer 3 contains the component (A) and the component (B), the synergistic effect of these components improves the sensation of cooling and warming perceived at the site of skin application. It is possible to exhibit an excellent warm feeling effect.

  The adhesive layer 3 contains menthol as the component (A). Menthol may be any of d-form, l-form, and dl-form, and preferably 1-form.

  Moreover, you may use the essential oil containing a menthol as (A) component. The essential oil containing menthol can be appropriately selected from known ones, and examples thereof include peppermint oil, peppermint oil, spearmint oil, and the like.

  Although there is no restriction | limiting in particular about content of (A) component in the adhesion layer 3, For example, 0.1-10 weight%, Preferably it is 0.5-8 weight%, More preferably, 1-5 weight% is mentioned. . If the essential oil containing menthol is blended as the component (A), the content of the essential oil may be adjusted so that the menthol content satisfies the above range.

  The adhesive layer 3 contains ginger extract and / or camphor as the component (B) together with the component (A).

  Among components (B), ginger extract is a component obtained by extracting ginger. The ginger used as a raw material for the ginger extract may be in a dry state or an undried state. Moreover, the ginger used as a raw material of the ginger extract may have been subjected to processing such as pulverization and shredding. Furthermore, the ginger used as a raw material for the ginger extract may have been previously subjected to an enzyme treatment using an enzyme such as a saccharide-degrading enzyme, proteolytic enzyme, lipolytic enzyme, or nucleolytic enzyme. Good.

  Specific examples of the extraction solvent used for ginger extraction include water and water-containing ethanol (ethanol content of about 30 to 95% by weight).

  Moreover, the extraction treatment conditions for ginger are not particularly limited, but for example, about 100 to 100,000 ml, preferably about 100 to 10,000 ml of extraction solvent is used per 1 kg of ginger, preferably about 5 to 120 ° C., preferably Is about 10 seconds to 24 hours, preferably about 1 minute to 6 hours under a temperature condition of about 10 to 70 ° C.

  A ginger extract is obtained by concentrating or drying the extract obtained by extracting the ginger. Moreover, about the extract obtained by extracting the ginger, you may perform processes, such as insoluble matter removal and disinfection, as needed.

  The ginger extract used as component (B) may be in either a dry state or a water-containing state, but is preferably in a dry state.

  When using a ginger extract as the component (B), the content of the ginger extract in the adhesive layer 3 is not particularly limited. For example, 0.01 to 3% by weight, preferably in terms of dry weight of the ginger extract, 0.05-2 weight%, More preferably, 0.1-1 weight% is mentioned.

  When ginger extract is used as component (B), the ratio of ginger extract to component (A) is not particularly limited. For example, ginger extract per 100 parts by weight of component (A) is 0 in terms of dry weight. 5 to 50 parts by weight, preferably 1 to 20 parts by weight, and more preferably 5 to 10 parts by weight.

  In addition, among the component (B), camphor may be any of d-form, l-form, and dl-form, preferably dl-form.

  Moreover, you may use the essential oil containing camphor as (B) component. The essential oil containing camphor can be appropriately selected from known ones and used.

  When camphor is used as the component (B), the content of camphor in the adhesive layer 3 is not particularly limited. For example, 0.5 to 10 wt%, preferably 1 to 8 wt%, more preferably 3 Up to 6% by weight. When the essential oil containing camphor is used as the component (B), the content of the essential oil may be adjusted so that the content of camphor satisfies the above range.

  When camphor is used as component (B), the ratio of camphor to component (A) is not particularly limited. For example, camphor is 50 to 300 parts by weight, preferably 70 parts per 100 parts by weight of component (A). -250 weight part, More preferably, 100-200 weight part is mentioned. If the essential oil containing camphor is used as the component (B), the ratio of camphor contained in the essential oil may be adjusted so as to satisfy the above range.

  In the adhesive layer 3, as the component (B), either ginger extract or camphor may be used alone, or a combination thereof may be used. When the combination of ginger extract and camphor is used as the component (B), it is particularly preferable because it can further improve the warm feeling and cool feeling that are exhibited, and can exert the thermal action remarkably. Even when the ginger extract and camphor are used in combination as the component (B), the content of the ginger extract and camphor in the adhesive layer 3 and the ratio to the component (A) are the same as the above range.

  In addition to the components (A) and (B), the pressure-sensitive adhesive layer 3 contains a pressure-sensitive adhesive as a base for providing adhesiveness to the skin.

  An adhesive includes a polymer (adhesive polymer) that exhibits adhesiveness in the presence of an oil or other solvent, and the adhesive polymer is dispersed or dissolved in an oil or other solvent to exhibit adhesiveness. Composition. The kind and composition of the adhesive polymer contained in the adhesive are known, and in the present invention, the adhesive used in the adhesive layer of conventional disposable warmers can be used. Specific examples of the type of pressure-sensitive adhesive include rubber-based pressure-sensitive adhesives, acrylic pressure-sensitive adhesives, silicone-based pressure-sensitive adhesives, and urethane-based pressure-sensitive adhesives.

  Specific examples of the adhesive polymer contained in the rubber adhesive include polystyrene-polybutadiene-polystyrene copolymer, polystyrene-polyisoprene-polystyrene copolymer, polystyrene-polyethylene-polybutylene-polystyrene copolymer, Examples include polystyrene-polyethylene-polypropylene-polystyrene copolymers.

  Specific examples of the silicone pressure-sensitive adhesive include addition reaction curable silicone pressure-sensitive adhesives and peroxide-curable silicone pressure-sensitive adhesives.

  Specific examples of the adhesive polymer contained in the acrylic adhesive include a (meth) acrylic polymer having an acrylic monomer such as methyl acrylate, ethyl acrylate, 2-ethylhexyl acrylate, and butyl acrylate as a structural unit. .

  Specific examples of the adhesive polymer contained in the urethane-based adhesive include polyols such as polyether polyol, polyester polyol, polycarbonate polyol, and polycaprolactone polyol, and polyisocyanates such as diphenylmethane diisocyanate, tolylene diisocyanate, and hexamethylene diisocyanate. And a urethane resin obtained by the reaction.

  These pressure-sensitive adhesives may be used alone or in combination of two or more.

  Among these pressure-sensitive adhesives, rubber-based pressure-sensitive adhesives are preferable.

  The content of the pressure-sensitive adhesive in the pressure-sensitive adhesive layer 3 may be appropriately set according to the adhesiveness to the skin, the type of the pressure-sensitive adhesive, and the like, for example, 60 to 99.89% by weight, preferably 70 to 98% by weight. More preferably, 80-97 weight% is mentioned.

  In addition to the components described above, the adhesive layer 3 may contain a pharmacological component and a cosmetic component as necessary. Such components include, for example, acidic mucopolysaccharides, chamomiles, horse chestnuts, ginkgo, hamameli extract, grapefruit extract, rosemary extract, lemon extract, vitamin E, nicotinic acid derivatives, and the like; glycerin, ceramide, collagen Moisturizers such as hyaluronic acid and squalane; fatigue relieving agents such as basil extract and juniper extract; analgesics such as indomethacin, diclofenac, flurbiprofen, ketoprofen, piroxicam, felbinac, methyl salicylate, glycol salicylate; tea extract, Korea Carrot extract, caffeine, horse chestnut, aminophylline, escin, anthocyanidin, organic iodine compound, Hypericum grass extract, Shimotake grass extract, Horsetail, Mannen wax, Atlantic tree Slimming agents such as tantalum, thiomucase and hyaluronidase; Terminaria, Bisnaga, Mayus, Horse Chestnut, Anthocyanin, Vitamin P, Calendula, Concortic acid, Silanol, etc .; Peeling agent such as protease; Calcium thioglycolate And hair removal agents such as γ-oryzanol and the like; and natural fragrances and fragrances such as single fragrances.

  These pharmacological ingredients and cosmetic ingredients may be used singly or in combination of two or more. Moreover, what is necessary is just to set suitably about content of the pharmacological component and cosmetics component in an adhesion layer according to the pharmacological effect or cosmetic effect which should be provided.

The application amount of the adhesive layer 3 may be appropriately set according to the adhesiveness to the skin to be applied, the area where the adhesive layer is formed, and the like. For example, the region where the adhesive layer 3 is formed (adhesive layer described later) Examples of the coating amount of the pressure-sensitive adhesive layer 3 in the formation region 3X) include 20 to 150 g / m ² , preferably 40 to 120 g / m ² , and more preferably 60 to 100 g / m ² .

  The adhesive layer 3 may be provided on the entire skin application surface of the container 2, but is preferably provided partially on the skin application surface. In the case where the fiber base material 212 is included in the skin application surface side packaging material 21 in the container 2, the adhesive layer 3 is partially provided on the skin application surface in the container 2, thereby providing an adhesive layer. 3 (hereinafter also referred to as “adhesive layer forming region 3X”) and an area where the adhesive layer 3 is not provided and the fiber base 212 is exposed (hereinafter referred to as “fiber base exposed”). In some cases, the fiber base material 212 absorbs sweat perspired in the fiber base exposed region 212X and exists in the adhesive layer non-formation region 212X through the sweat (which may be referred to as “region 212X”). The component A) and the component (B) can act on the skin and effectively increase the action. Moreover, since the cooling sensation caused by the component (A) can be more effectively perceived when it is in contact with moisture, by partially providing the adhesive layer 3 on the skin application surface of the container 1, Water can be secured between the skin and the heating tool, and the cooling sensation due to the component (A) can be more effectively perceived.

  When the adhesive layer 3 is partially provided on the skin application surface of the container 2, the adhesive layer 3 is provided at least in the lower surface region of the container 22 that stores the heat generating part 1 in the container 2. Preferably it is. When the adhesive layer 3 is partially provided on the skin application surface of the container 2, the shape of the adhesive layer forming region is not particularly limited, but for example, stripes, dots, grids, meshes, moisture absorption Examples include a frame shape surrounding the end of the layer.

  As an aspect in which the adhesive layer 3 is partially provided on the skin application surface of the container 2, FIG. 1 shows an aspect in which a stripe-shaped adhesive layer forming region 3X is formed. When the stripe-shaped adhesive layer forming region is formed, the stripe width of the adhesive layer forming region 3X may be appropriately set according to the skin part to which the heating tool is applied, the size of the heating tool, etc. About 1-100 mm, Preferably about 3-30 mm is mentioned.

Moreover, the aspect in which the dot-shaped adhesion layer formation area | region 3X was formed in FIG. 2 as an aspect which provided the adhesion layer 3 partially with respect to the skin sticking surface in the container 2 is shown. Although FIG. 2 shows an aspect in which circular dots are arranged, the dot shape may be any of an elliptical shape, a polygonal shape, an indefinite shape, and the like. When the dot-shaped adhesive layer forming region 3X is formed, the area per dot may be appropriately set according to the skin site to which the heating tool is applied, the size of the heating tool, etc. ～10000Mm ² about, and preferably about 500 to 3,000 mm ^2.

Moreover, the aspect in which the grid | lattice-like adhesion layer formation area | region 3X was formed in FIG. 3 as one aspect | mode which provided the adhesion layer 3 partially with respect to the skin sticking surface in the container 2 is shown. When the lattice-shaped adhesive layer forming region 3X is formed, the area per lattice may be appropriately set according to the skin site to which the heating tool is applied, the size of the heating tool, etc. ～3000Mm ² about, and preferably about 10 to 1000 mm ^2.

  Moreover, the aspect in which the mesh-shaped adhesion layer formation area 3X was formed in FIG. 4 as an aspect which provided the adhesion layer 3 partially with respect to the skin sticking surface in the container 2 is shown. When forming the mesh-shaped adhesive layer forming region 3X, the line width for forming the mesh may be appropriately set according to the skin site to which the heating tool is applied, the size of the heating tool, etc. About 100 mm, Preferably about 3-30 mm is mentioned.

  Moreover, the aspect in which the frame-shaped adhesion layer formation area 3X was formed in FIG. 5 as one aspect which provided the adhesion layer 3 partially with respect to the skin sticking surface in the container 2 is shown. When the frame-shaped adhesive layer forming region 3X is formed, the width of the frame may be appropriately set according to the skin part to which the heating tool is attached, the size of the heating tool, etc., for example, about 1 to 100 mm Preferably, about 3-50 mm is mentioned.

  Further, when the adhesive layer 3 is partially provided on the skin application surface of the container 2, the formed fiber base exposed region 212 </ b> X communicates with the end of the skin application surface of the container 2. It is preferable. When the fiber base exposed region 212X communicates with the end of the skin application surface of the container 2, the air passage can be secured when the heating tool is applied to the skin, and the sticking caused by sweating during use can be further improved. It becomes possible to suppress more effectively. As a mode in which the fiber base exposed region 212X communicates with the end of the skin application surface of the container 2, specifically, a mode in which the adhesive layer 3 is formed in a stripe shape or a dot shape is exemplified.

  When the adhesive layer 3 is partially provided on the skin application surface of the container 2, the area ratio between the adhesive layer formation region 3 </ b> X and the fiber base exposed region 232 </ b> X is appropriately determined according to the adhesiveness to the skin to be applied, etc. What is necessary is just to set, for example, as an area ratio of adhesion layer formation area 3X: fiber base material exposure area 232X, usually 100: 5-2000, preferably 100: 10-400, more preferably 100: 25-150 is mentioned. It is done.

  The pressure-sensitive adhesive layer 3 is formed by coating the skin application surface of the container 2 with a known coating method.

<Release layer>
In the heating tool of the present invention, if necessary, a peelable release layer may be provided on the surface of the pressure-sensitive adhesive layer 3 (the side where the skin is applied). If a release layer is provided, prevent drying of the adhesive layer during storage, prevent volatilization of active ingredients in the adhesive layer during storage, and prevent deterioration in handleability due to adhesiveness of the adhesive layer. Can do.

  Examples of the release layer include resin films such as polyethylene terephthalate, polyacrylonitrile, ethylene-vinyl alcohol copolymer, and polypropylene; and paper that has been subjected to release properties imparting processing such as silicon processing. Moreover, even if it is a case where a resin film is used as a mold release layer, mold release provision processes, such as a silicon process, may be given. Among these release layers, resin films such as polyethylene terephthalate, polyacrylonitrile, ethylene-vinyl alcohol copolymer and the like are preferable because they can suppress the adsorption of active ingredients in the adhesive layer.

<Preferred embodiment>
A schematic diagram of a cross-sectional structure of a preferred embodiment of the heating tool of the present invention is shown in FIG. In the heating tool shown in FIG. 6, the container 2 having the container 22 is formed by pasting the ends of the skin patch surface side packaging material 21 and the non-skin patch side packaging material 23 together. 2, the exothermic composition which generates heat by contact with oxygen is housed as the heat generating portion 1. In the heating tool shown in FIG. 6, the skin application surface side packaging material 21 of the container 2 is formed of a thermoplastic resin (polyethylene and / or polypropylene) having excellent weldability from the container 22 side toward the skin application surface. Further, the non-breathable resin layer 211b, the non-breathable resin layer 211a formed of a barrier resin, and the fiber base material 212 are constituted by a laminated sheet laminated in this order. In the heating tool shown in FIG. 6, the non-skin application surface side packaging material 23 of the container 2 is formed by laminating the breathable resin layer 231 and the fiber base material 232 in this order from the container 22 side toward the outside. It is formed with a laminated sheet. In the heating tool shown in FIG. 6, the adhesive layer 3 is partially provided with respect to the moisture absorbing layer 211, but the adhesive layer 3 may be provided on the entire surface of the moisture absorbing layer 211. In FIG. 6, the release layer is omitted for convenience.

<Usage and packaging>
The heating tool of the present invention is used as a body warming tool or a therapeutic tool by applying an adhesive layer to the skin. In particular, since the heating tool of the present invention can exhibit a remarkably excellent heat action, it is particularly suitably used as a therapeutic tool for promoting blood circulation, alleviating pain, improving shoulder stiffness and the like.

  The skin site to which the heating tool of the present invention is applied is not particularly limited, and examples thereof include eyes, face, neck, shoulders, waist, back, abdomen, buttocks, arms, legs, and soles.

  When the heating part 1 is a heat-generating composition that generates heat by contact with oxygen, the heating tool of the present invention is packaged in a packaging material having an oxygen barrier property, and the heat-generating composition is not in contact with air. Provided in. When the packaging material is opened at the time of use, the exothermic composition comes into contact with air and heat generation starts.

  EXAMPLES The present invention will be described more specifically with reference to the following examples, but the present invention is not limited to these examples.

1. Production of heating tools
Example 1
A skin application surface side packaging material (rectangular 13 cm long, 9.5 cm wide) made of a non-breathable laminated sheet in which a polyethylene film, a polyethylene terephthalate film, and a nonwoven fabric (made of polyethylene terephthalate) were laminated in this order was prepared. The adhesive layer forming composition A having the following composition partially heated and mixed at 140 ° C. with respect to the surface of the non-woven fabric of the skin patch side packaging material has a coating amount of 100 g / m ² in the region where the adhesive layer is formed. The adhesive layer was partially formed on the skin-pasted surface-side packaging material by coating so as to be, and then cooling. The adhesive layer is partially formed in the stripe shape shown in FIG. 1. The adhesive layer forming region has a stripe width of 14.25 mm, the moisture absorption layer (nonwoven fabric) exposed region has a lateral width of 12.7 mm, and the adhesive layer forming region. : The area ratio of the moisture absorption layer exposed region was set to 60:40.
<Adhesive layer forming composition A>
Menthol (Brand name "Thin Cargo", manufactured by Nagaoka Jitsugyo Co., Ltd.) 2.5% by weight
Ginger extract (trade name “Ginger Extract”, manufactured by Alps Pharmaceutical Co., Ltd.) (Liquid) 5% by weight (corresponding to about 0.2% by weight in terms of dry ingredients)
Kanful (trade name “dl-Camphor [SP]”, manufactured by Nagaoka Kogyo Co., Ltd.) 4% by weight
Rubber adhesive 88.5% by weight
Total 100% by weight

  Next, a release layer (rectangle of 13 cm in length and 9.5 cm in width) made of a polyethylene terephthalate film subjected to silicon processing was bonded to the adhesive layer on the skin attachment surface side packaging material.

  Separately, a non-skin-attached side packaging material (rectangular with a length of 13 cm and a width of 9.5 cm) made of a breathable laminated sheet in which a polyethylene film with pores and a nonwoven fabric (made of polyethylene terephthalate) are laminated is prepared. did.

  Next, 22 g of iron powder, 6 g of activated carbon, 10 g of a water-soluble salt / water retention agent / water mixture (mixture of sodium chloride, water absorbent resin, meteorite, water, etc .; containing 8.5 g of water) are mixed to produce an exothermic composition. Prepared. In a state where 38 g of the obtained exothermic composition was sandwiched between the polyethylene film side of the skin adhesive surface side packaging material and the polyethylene film side of the skin adhesive surface side packaging material, the skin adhesive surface side packaging material and the non-skin adhesive surface side A heating tool in which the exothermic composition was accommodated in the accommodating portion (vertical 12 cm, lateral 8.5 cm) was manufactured by thermally welding the end portions of the packaging material. The produced heating tool was quickly accommodated in a sealed bag.

Example 2
A heating tool was produced under the same conditions as in Example 1 except that the adhesive layer was formed using the adhesive layer forming composition B having the following composition.
<Adhesive layer forming composition B>
Menthol (Brand name "Thin Cargo", manufactured by Nagaoka Jitsugyo Co., Ltd.) 2.5% by weight
Ginger extract (trade name “Ginger Extract”, manufactured by Alps Pharmaceutical Co., Ltd.) (Liquid) 5% by weight (corresponding to about 0.2% by weight in terms of dry ingredients)
Rubber adhesive 82.5% by weight
Total 100% by weight

Example 3
A heating tool was produced under the same conditions as in Example 1 except that the adhesive layer was formed using Composition C for forming an adhesive layer having the following composition.
<Adhesive layer forming composition C>
Menthol (Brand name "Thin Cargo", manufactured by Nagaoka Jitsugyo Co., Ltd.) 2.5% by weight
Kanful (trade name “dl-Camphor [SP]”, manufactured by Nagaoka Kogyo Co., Ltd.) 4% by weight
Rubber adhesive 93.5% by weight
Total 100% by weight

Comparative Example 1
A heating tool was manufactured under the same conditions as in Example 1 except that the active ingredient was not blended and an adhesive layer consisting only of a rubber adhesive was used.

Comparative Example 2
A heating tool was produced under the same conditions as in Example 1 except that the adhesive layer was formed using the adhesive layer forming composition D having the following composition.
<Adhesive layer forming composition D>
Menthol (Brand name "Thin Cargo", manufactured by Nagaoka Jitsugyo Co., Ltd.) 2.5% by weight
Rubber adhesive 97.5% by weight
Total 100% by weight

Comparative Example 3
A heating tool was produced under the same conditions as in Example 1 except that the adhesive layer was formed using the adhesive layer forming composition E having the following composition.
<Adhesive layer forming composition E>
Ginger extract (trade name “Ginger Extract”, manufactured by Alps Pharmaceutical Co., Ltd.) (Liquid) 5% by weight (corresponding to about 0.2% by weight in terms of dry ingredients)
Rubber adhesive 95% by weight
Total 100% by weight

Comparative Example 4
A heating tool was produced under the same conditions as in Example 1 except that the adhesive layer was formed using the adhesive layer forming composition F having the following composition.
<Adhesive layer forming composition F>
Kanful (trade name “dl-Camphor [SP]”, manufactured by Nagaoka Kogyo Co., Ltd.) 4% by weight
Rubber adhesive 96% by weight
Total 100% by weight

2. Evaluation of heating tool
Test Example 1: Evaluation of warmth and coolness The heating tools of Examples 1 to 3 and Comparative Examples 1 to 4 were affixed to the waists of five subjects, and the warmth and coolness presented over time. Was scored according to the following criteria, and the average value was calculated.
(Criteria for warm and cold feeling)
4: Feels very strong 3: Feels strong 2: Feels weak 1: Feels very weak 0: Does not feel at all

  The obtained results are shown in FIGS. Regarding the warm feeling, when the ginger extract was included alone in the adhesive layer (Comparative Example 3), the same warm feeling as when the active ingredient was not included in the adhesive layer (Comparative Example 1) was exhibited. In the case where menthol or camphor was included alone in the layer (Comparative Examples 2 and 3), the warm feeling exhibited was lower than in the case where the adhesive layer did not contain an active ingredient (Comparative Example 1). On the other hand, when the menthol and ginger extract and / or camphor are included in the adhesive layer (Examples 1 to 3), the warmth is higher than when the adhesive layer includes the ginger extract alone (Comparative Example 3). The improvement of warmth was recognized by the synergistic action of menthol and ginger extract and / or camphor. In particular, when menthol, ginger extract, and camphor were included (Example 1), the improvement in warmth was recognized remarkably.

  In addition, with respect to the cooling sensation, in the case where menthol was included alone in the adhesive layer (Comparative Example 2), the cooling sensation was improved compared to the case where the adhesive layer did not contain an active ingredient (Comparative Example 1). When the ginger extract or camphor was included alone in the adhesive layer (Comparative Examples 3 and 4), the same cooling sensation was perceived as when the active layer was not included in the adhesive layer (Comparative Example 1). On the other hand, when the menthol and ginger extract and / or camphor are included in the adhesive layer (Examples 1 to 3), the sensation of coolness is greater than when the menthol is included alone in the adhesive layer (Comparative Example 2). In addition, the sustainability of the cold feeling was also greatly improved. In particular, when the adhesive layer contains menthol, ginger extract, and camphor (Example 1), an improvement in cooling sensation was recognized remarkably.

  That is, from the above results, it is clear that when the menthol and ginger extract and / or camphor are included in the adhesive layer, especially when menthol, ginger extract and camphor are included, the warm and cool feelings are synergistically improved. became.

Test Example 2: Evaluation of skin temperature The skin temperature produced by the heating tools of Example 1 and Comparative Example 1 was evaluated by two subjects. Specifically, the heating tool of Example 1 was stuck on the left shoulder of the subject, and the heating tool of Comparative Example 1 was stuck on the right shoulder. The skin surface temperature was measured using infrared thermography before application and after 60 minutes from the start of application. In addition, about the skin temperature 60 minutes after the sticking start, it measured about both the state which stuck the heating tool, and the state which peeled the heating tool.

  The obtained results are shown in FIG. As is clear from FIG. 9, the heating tool of Example 1 had the same skin temperature as that of Comparative Example 1. That is, from this test result, although the heating tool of Example 1 brings about the same skin temperature as the heating tool of Comparative Example 1, the perceived warmth and coolness are improved. Became clear.

Test Example 3: Evaluation of low back pain relief effect The low back pain relief effect of the fever of Example 1 and Comparative Example 1 was evaluated by 10 subjects who felt low back pain. Specifically, the heating tools of Example 1 and Comparative Example 1 were applied to the lower back of the subject for 60 minutes, and the degree of lower back pain was evaluated over time using a VAS (Visual Analogue Scale). In the VAS evaluation, “no pain” was scored as 0 (minimum score), and “no pain more than that” was scored as 150 (maximum score), and the degree of low back pain felt was scored. The back pain alleviation effect was evaluated by calculating the average value of the back pain graded by 10 subjects.

  The obtained result is shown in FIG. As shown in FIG. 10, when the adhesive layer contained menthol, ginger extract, and camphor (Example 1), a remarkably excellent low back pain alleviating effect and immediate effect were recognized.

Test Example 4: Evaluation of blood flow The change in blood flow was evaluated by the six test subjects using the heating tools of Example 1 and Comparative Example 1. Specifically, first, the subject was placed in a prone position, and measurement of the muscle blood flow in the back was started. 10 minutes after the time when the blood flow becomes stable, the heating tools of Example 1 and Comparative Example 1 are stuck vertically and the heating tool is stuck so that the center is between the third lumbar vertebra and the second lumbar vertebra. 40 minutes after that, the heating tool was removed. The muscle blood flow in the back of the subject was measured from 10 minutes before the application of the heating tool until 10 minutes after the heating tool was removed. In addition, about the muscular blood flow volume, the blood oxygenated hemoglobin density | concentration was measured with the infrared oxygen monitor apparatus (NIRO-200, Hamamatsu Photonics Co., Ltd. product).

  The obtained results are shown in FIGS. FIG. 11 shows the change over time in the blood oxygenated hemoglobin concentration, and FIG. 12 shows the integrated value (constant integrated value) of the blood oxygenated hemoglobin concentration. From this result, it was confirmed that the heating tool containing menthol, ginger extract, and camphor in the adhesive layer showed an improvement in blood flow rate compared to the case where no active ingredient was contained in the adhesive layer, and exhibited an excellent thermal effect. It was done.

Test Example 5: Evaluation of safety The safety of each heating tool was evaluated by performing the following patch test. First, the skin application surface side wrapping material (with adhesive layer) constituting each heating tool was cut into a square of 8 mm on each side to prepare a test sample. As a patch test unit, Finn Chamber (EPITEST, Finland) on Scanpor tape (NORGESPLASTER, Norway) was used, and the adhesive layer of the test sample was affixed to the back of 30 subjects for 24 hours. 30 to 60 minutes after unit removal (24 hours after application) and 48 hours after application (24 hours after unit removal), the reaction at each skin site was scored according to the Japanese standard shown in Table 1, and the skin was determined according to the following formula. Stimulus index values were calculated.

  The obtained result is shown in FIG. From this result, the heating tool provided with an adhesive layer containing menthol, ginger extract, and camphor has a reduced stimulation index value compared to the case where menthol is included alone in the adhesive layer, and has a much higher safety. It became clear to have.

DESCRIPTION OF SYMBOLS 1 Heat generating part 2 Container 21 Skin-pasting surface side packaging material 211 Non-breathable resin layer 211a Non-breathable resin layer 211b formed of barrier resin Non-breathable resin layer formed of thermoplastic resin excellent in heat weldability 212 Fiber base material 23 Non-skin application surface side packaging material 231 Breathable resin layer 232 Fiber base material 3 Adhesive layer

Claims (8)

A fever used by being applied to the skin,
A heat generating part that generates heat to be transmitted to the skin;
A container containing the heat generating part and having a skin application surface to be applied to the skin;
An adhesive layer provided on the skin application surface side of the container,
The adhesive layer comprises (A) menthol, and (B) ginger extract and / or camphor,
A heating tool characterized by that.   The heating tool according to claim 1, wherein the packaging material constituting the skin application surface side of the container has a barrier function that blocks transmission of components contained in the adhesive layer.   The packaging material constituting the skin application surface side of the container has a non-breathable resin layer, a vapor deposition film, or a metal foil film formed of polyethylene terephthalate, polyacrylonitrile, or ethylene-vinyl alcohol copolymer. The heating tool according to claim 2.   The heating tool according to any one of claims 1 to 3, comprising ginger extract and camphor as the component (B).   The heating tool according to any one of claims 1 to 4, wherein the menthol content in the adhesive layer is 0.1 to 10% by weight.   The heating tool according to any one of claims 1 to 5, wherein the content of the ginger extract in the adhesive layer is 0.01 to 3% by weight in terms of dry weight.   The heating tool according to any one of claims 1 to 6, wherein the content of camphor in the adhesive layer is 0.5 to 10% by weight.   The heating tool according to any one of claims 1 to 7, wherein the heat generating portion is a heat generating composition that generates heat by contact with oxygen, and the container has air permeability at least partially.