JPS61268251A - Hot compress body - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a warm compress.

(Prior Art and its Problems) Warm compresses have been conventionally used for thermotherapy, and are well known as effective external medicines for thermotherapy.

For example, (a) an ancient method using a poultice heated with boiling water, (b) a method in which the poultice is combined with a packaging material or bag containing an exothermic agent that generates heat in the presence of air, ( C) Warm compresses that integrate these are known (Japanese Patent Application Laid-Open No. 53-47514, JP-A No. 59-176).
210, Utility Model Application Publication No. 56-116020). However, methods (a) and (b) of these hot compresses have shortcomings such as short heat duration and inconvenience to use, while hot compresses of (c) do not have the above drawbacks. Although this has been somewhat resolved, the movement and uneven distribution of the granular heat generating agent within the bag makes the heat distribution uneven, weakening its effectiveness, and making it bulky and losing its flexibility, making it uncomfortable to wear. There are such drawbacks, and the current situation is that we have not yet found anything that satisfies us.

(Means for Solving the Problem) As a result of intensive studies to solve the above-mentioned problems, the inventors of the present invention found that by bonding the exothermic agent to the inner surface of the packaging material and forming the exothermic agent into a sheet form, an unprecedented effect was achieved. The present inventors have discovered that the present invention exhibits the following properties and have completed the present invention.

That is, the present invention provides a hot compress in which a heat-generating agent is housed in a packaging material having at least a portion, for example, one side of which is air permeable, and a poultice layer is provided on the outer surface of the packaging material. The present invention provides a warm compress characterized by having the exothermic agent adhered to form a sheet. According to the thermal compress of the present invention, the movement and uneven distribution of the heat generating composition within the packaging material are eliminated, the heat generation distribution becomes uniform, an excellent thermal effect is obtained, and the feeling of wearing during use is enhanced. Ta.

(Structure of the Invention) The exothermic agent used in the present invention may preferably be an exothermic composition that generates heat in the presence of air, such as (a) metal powder such as iron powder, water, oxidizing agent such as sodium chloride, etc. (b) a composition whose main components are an alkali metal sulfide, a polysulfide, or a hydrated salt thereof, and carbonaceous material and/or iron carbide; compositions etc.

Adhesives for bonding the exothermic agent to the inner surface of the packaging material include various hot melt adhesives, pressure sensitive adhesives, rubber adhesives, thermoplastic or thermosetting resin adhesives, and adhesives mixed with these synthetic resins. etc.

When selecting these, the packaging material, compatibility with the exothermic agent, bonding method, etc. are taken into consideration. Thermoplastic resin powders exhibiting a low melting point such as polystyrene powder are preferred, and as solution or emulsion type adhesives or viscous liquid type adhesives, emulsions such as ethylene vinyl acetate copolymer resin adhesives or acrylic copolymer resin adhesives are preferred. Solutions or viscous liquids such as water-soluble adhesives, polychloroprene resin-based or polyurethane resin-based adhesives are preferred, and adhesives with high concentration and high viscosity are convenient. Particularly preferred is a powder or emulsion aqueous solution of ethylene vinyl acetate copolymer resin.

The packaging material for storing the exothermic agent is, for example, made by heat-sealing the ends of two sheets together, preferably in the shape of a bag, and at least a part of it, for example, one side, is breathable. Atmospheric air is introduced from the inside and the exothermic agent generates heat. Preferably, the packaging material is made non-breathable on one side (non-breathable packaging material part) on which the poultice is provided, and made breathable on the other side facing this (breathable packaging material part). Generally, the dimensions of the packaging material may be appropriately determined depending on the size of the poultice layer. The packaging material is selected from various plastic films such as polyethylene film, polypropylene film, and polyester film, as well as foamed sheets, finely continuous pore sheets, aluminum foil, and nonwoven fabrics, and can be used singly or laminated to suit each purpose. used.

The packaging material used for the breathable packaging section must have breathability and heat-sealing properties, must not leak the exothermic agent to the outside, and should preferably have flexibility, a good feel, and heat retention. . In general, non-woven fabrics, micro-open pore sheets, open-cell foamed plastics, etc., and plastic films are laminated with micropores perforated to adjust the amount of airflow, or a material with perforations, etc. is used. A laminate with a perforated plastic film is used, and specific examples include a laminated film of polyethylene film/nylon nonwoven fabric with fine holes perforated from the inner layer, a perforated polyethylene film/nylon nonwoven fabric, or a perforated polyethylene film. /@ Laminated films such as polypropylene sheets with fine continuous pores are mentioned, and sheets with fine continuous pores such as polyethylene, polypropylene, polystyrene, synthetic rubber, and polyurethane are also used alone or after some processing. .

In addition, the packaging material used for the non-breathable packaging material is a material with heat sealability, or a laminated film composed of an inner layer with heat sealability and an outer layer with heat resistance, etc.
It is preferable to have high thermal conductivity and flexibility, and the heat generating agent and poultice should be isolated or non-breathable to the extent that they do not adversely affect the quality of each other. As a specific example, from the inner layer, polyethylene/aluminum foil/polyester, polyethylene/
Examples include laminated films such as aluminum foil/polypropylene, polyethylene/polyvinylidene chloride/polypropylene, etc., and fine open-pore sheets such as polyethylene, polypropylene, polystyrene, synthetic rubber, and polyurethane are also used after some processing. can be done.

The poultice layer provided on the outer surface of the packaging material may be any commonly used poultice layer, and a poultice layer with a peelable plastic film or the like adhered to the outer surface of the poultice may also be used.

The airtight packaging material is for sealing at least the air permeable part of the packaging material from the atmosphere, and is made of the same material as the non-breathable packaging material described above, with the inner layer starting from polyethylene film/polyvinylidene chloride/ Laminated films such as polypropylene, polyethylene/aluminum foil/polyester, etc. are preferably used.

The exothermic agent may be adhered to the inner surface of the packaging material and fixed in a flexible sheet by any commonly used method, but it is preferable to use the above-mentioned adhesive, preferably a powdered or flaky foaming agent. Mix non-solvent adhesive and exothermic agent,
The resulting mixture is introduced into the packaging material, and then heat and/or pressure is applied to the outer surface of the packaging material to adhere to the inner surface of the packaging material, preferably the inner surface of the non-breathable packaging material. Preferably, the fusion is performed using a heating roll, a heating plate, or the like. Only one side may be a non-heated roll or a non-heated plate, or in each case, embossing to provide unevenness on the surface may be used in combination.

For the adhesion or fusing process, the exothermic agent/adhesive mixture is filled into the bag-like packaging material at the same time, or after filling, the mixture is mechanically moved inside the packaging material by applying vibrations, tilting, etc. You can either form a flat layer and fuse it together, or you can spread the exothermic agent over one packaging material in a flat layer, then place the other packaging material on top of that and then fuse it. But it is possible. The blending ratio of the non-solvent adhesive to the exothermic agent is generally preferably in the range of about 3 to 60% by weight, but it depends on the material of the packaging material, the type and shape of the non-solvent adhesive, heating or pressurizing conditions, and the desired heat generation. The amount can be adjusted as appropriate depending on the desired flexibility and the like.

Alternatively, the adhesive described above, preferably in the form of a solution, emulsion or viscous liquid, is applied to a packaging material before being formed into a bag, preferably a non-breathable packaging material provided with a poultice layer. It is applied to the inner surface of the body. A poultice layer 5 is provided on the outer surface of the non-breathable packaging part 2, and the entire warm compress body is sealed with an airtight packaging material 6.

In FIG. 2, the airtight packaging material 6 is the same as that in FIG. 1 except that the airtight packaging material 6 is temporarily bonded at the heat-sealed portion of the breathable packaging material part 1 in order to isolate the breathable packaging material part 1 from the air. .

(Manufacturing example) Next, the present invention will be explained in more detail with reference to production examples.

Production Example 1 As the breathable packaging material part 1, a laminate film of polyethylene film/nylon nonwoven fabric with perforations was used, and as the non-breathable packaging material part 2, a laminate film of polyethylene film/aluminum foil/polyester film was used.

Each bag was 135 m+++ long and 100 mm wide, and the polyethylene film layer was layered on the inside, and the ends were heat-sealed to a width of 5 mm to create a heat generating agent storage bag. The packaging material is shaped into a bag, and then a heating agent is filled into the packaging material and adhered to the inner surface of the packaging material in the same manner as described above.

Preferably, the adhesive is bonded using a heated roll or a pressure plate. The adhesion process is the same as described above. The application method is carried out by a method using a normal coating machine, such as a gravure printing method, a screen printing method, or a one-way spray method.
It is formed through a drying process if necessary. The coating amount is generally preferably in the range of about 10 to 3009/, Q, and is selected depending on the type and concentration of the adhesive, bonding conditions, desired calorific value, desired flexibility of the sheet-like heating element, and the like.

Although the exothermic property of the exothermic agent can be adjusted by the above-mentioned blending ratio of the adhesive or the fusion conditions, it is mainly done by selecting the packaging material.

Next, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

In FIG. 1, the exothermic agent 3 is built in between the non-breathable packaging material part 2 and the breathable packaging material part 1, and is fused to the inner surface of the packaging material.
The ends of the packaging material are sealed with the heat sealing part 7 to form a flexible sheet-like hot compress.25 parts of water, 13 parts of activated carbon, 4 parts of wood flour I, and powdered ethylene vinyl acetate as a non-solvent adhesive. 159 parts of exothermic agent 3 mixed with 10 parts of copolymer
It was filled and the whole was made into a flat shape.

After that, a heating plate is applied to the outer surface of the non-breathable packaging material part 2 to heat-seal the exothermic agent 3 to the entire inner surface of the non-breathable packaging material part 2,
A poultice 109 is formed into a sheet and placed on the outer surface of the non-breathable packaging material 2.
were arranged in layers to form a hot compress, which was left sealed in an airtight packaging material 6 of polyethylene film/polyvinylidene chloride/polypropylene film. When the heat generation performance of this hot compress was measured according to the standard "Measurement method and calculation method" (Tokyo Metropolitan Government bulletin April 1957) established by the Tokyo Metropolitan Bureau of Life and Culture, the maximum temperature was 60℃, the average temperature was 55℃, and the holding time was 6
When the time came, we also conducted a separate wearing sensory test and found that it was easy to wear and had a thermal effect.

Production Example 2 As the breathable packaging material part 1, a perforated polyethylene film/nylon nonwoven fabric laminated film was used, and as the non-breathable packaging material part 2, a polyethylene film/aluminum foil/polyester film laminated film was used.

Each has a size of 135 mm in height and 100 mm in width,
Apply 1 liter of ethylene-vinyl acetate co-electrical resin adhesive to the inner surface of the non-breathable packaging material part 2 except for the heat-sealed part 7 (5 mm inside).
o9/N", and overlapped each other with each polyethylene film layer on the inside, and heat-sealed the edges to make a heat-generating agent storage bag. Inside this, 60% iron powder was applied.
105 parts, 25 parts of saline, 13 parts of activated carbon, and 14 parts of wood flour.
The mixture was filled with 159 parts of exothermic agent 3 to make the whole into a flat shape. Thereafter, a pressure plate is used to slightly apply pressure from the outer surface of the packaging material, and the exothermic agent 3 is adhered to the inner surface 2 of the packaging material to form a sheet.
A hot compress was prepared by providing a layer of poultice log on the outer surface of the non-breathable packaging material 2, which was then sealed in an airtight packaging material 6 made of polyethylene/polyvinylidene chloride/polypropylene film at a room temperature of 20°C. It was left for over an hour. The heat generation performance of this thermal compress is one of the standards set by the Tokyo Metropolitan Bureau of Life and Culture.
When measured according to "Measuring Method and Calculation Method" (Tokyo Metropolitan Government Publication April 1957), the maximum temperature was 58°C, and the average temperature was 54°C.
The holding time was 6 hours, and a separate wearing sensory test was conducted, and the wearability was good and a thermal effect was observed.

(Effects of the invention) As is clear from the above results, by creating a flexible sheet-like warm compress, the movement and uneven distribution of the exothermic agent within the bag are eliminated, and the distribution of heat generation becomes uniform, making it easier to use. A hot compress body with a high hot compress effect that was easy to wear and had an improved feeling when worn was obtained.

[Brief explanation of drawings]

FIG. 1 and FIG. 2 are cross-sectional views showing the hot compress body of the present invention. 1: Breathable packaging material part, 2: Non-breathable packaging material part, 3: Exothermic agent,
4: Adhesive, 5: Poultice layer, 6: Airtight packaging material, 7: Heat sealing part, 8: Temporary adhesive part Patent applicant Koei Chemical Industry Co., Ltd. Representative Patent attorney Aoyama Aoyama and 1 other person 1st figure

Claims (1)

[Scope of Claims] 1. A hot compress comprising a heat-generating agent contained in a packaging material, at least a part of which is breathable, and a poultice layer provided on the outer surface of the packaging material, wherein a poultice layer is provided on the inner surface of the packaging material. A warm compress characterized by having the exothermic agent adhered to form a sheet. 2. The packaging material consists of a non-breathable packaging material part on which a poultice layer is provided and a breathable packaging material part facing the part, and a heat generating agent is adhered to the non-breathable packaging material part. The warm compress according to item 1. 3. The hot compress according to claim 1, wherein the exothermic agent is bonded by introducing a mixed component of the exothermic agent and a non-solvent adhesive into the packaging material and fusing the mixture. 4. The hot compress according to claim 3, wherein the non-solvent adhesive is a thermoplastic resin powder selected from ethylene/vinyl acetate copolymer powder, polyethylene powder, polypropylene powder, polystyrene powder, etc. 5. The hot compress according to claim 1, wherein the exothermic agent is bonded by applying an adhesive to the inner surface of the packaging material and introducing the exothermic agent therein. 6. The hot compress according to claim 5, wherein the adhesive is in the form of a solution, emulsion or viscous liquid. 7. Claims 2 to 6, in which the exothermic agent is adhered to the inner surface of the packaging material by a heated roll applied to the outer surface of the non-breathable packaging material part and a non-heated roll applied to the outer surface of the breathable packaging material part. The hot compress according to any of the above. 8. The hot compress according to any one of claims 2 to 6, wherein the adhesion to the non-breathable packaging material is performed by embossing. 9. The hot compress according to any one of claims 2 to 8, wherein the breathable packaging material is a polyurethane resin sheet having fine continuous pores or a laminate partially containing the resin sheet. 10. The hot compress according to any one of claims 2 to 9, wherein the non-breathable packaging material is a laminate partially containing a polyurethane resin sheet having fine continuous pores. 11. The warm compress according to any one of claims 1 to 10, wherein the entire warm compress is sealed with an airtight packaging material. 12. The hot compress according to claims 1 to 10, wherein the breathable packaging material portion is sealed with an airtight packaging material.