JPH1099366A - Fever bag - Google Patents

Abstract

(57) [Problem] To develop a heat generating bag in which a heat generating composition which generates heat upon contact with oxygen in the air is stored in a breathable bag and does not cause growth of bacteria when used. I do. SOLUTION: A material containing an antibacterial substance is used for a packaging material of a heat generating bag and / or an adhesive applied to the packaging material.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat generating bag, and more particularly to a heat generating bag in which a heat generating composition which generates heat upon contact with oxygen in the air is stored in a gas permeable bag.

[0002]

2. Description of the Related Art Conventionally, exothermic bags containing an oxidizable metal such as iron powder as a main component and generating heat upon contact with oxygen in the air in an air-permeable bag have been widely used as a pottery. It's being used. As a general structure of these heating bags, a heat-generating composition that generates heat upon contact with oxygen in the air is stored in a breathable bag, and is further stored for a long period before use. It is sealed in a breathable bag. In addition, in order to make it easy to wear on the human body, an adhesive coating layer is provided on one side of the heating bag, and when used, it is a type of heating bag that can be used by putting it on underwear or directly on the skin. Is also used.

[0003]

The heating temperature of these heating bags may reach 50 to 65 ° C. during use, but even in such a case, the temperature of the clothes in the mounting portion is 35 to 40 ° C.
In many cases, it is about. In addition, when the heat generating bag is used under conditions of poor air permeability, or when the outside air temperature is low and the place where the heat generating bag is attached has poor heat retention, or when the heat generation ends, the surface temperature of the heat generating bag is 35 °. ~ 40
° C. The heat-generating bag contains a large amount of water, and during the heat generation, the water vapor pressure is high, and the water is volatilized through the ventilation holes. ing.

As described above, the area around the mounting portion of the heating bag is under conditions that allow easy propagation of various germs, so that various germs in the clothing worn are proliferated. In addition, when rubbing or changing the attachment site, various bacteria adhere to the heat generating bag and the attachment site by hand, and the various bacteria proliferate, resulting in inconvenience. In view of the above, there has been a demand for the development of a heating bag that does not cause growth of various bacteria during use.

[0005]

Means for Solving the Problems The present inventors have conducted intensive studies to solve these problems, and as a result, have found that these problems can be solved by imparting antibacterial properties to the heat generating bag. The invention has been reached. That is, the present invention relates to a heat generating bag in which a heat generating composition which generates heat by oxygen in the air is housed in a gas permeable bag, and a packaging material constituting the heat generating bag and / or an adhesive applied to the packaging material. An exothermic bag characterized in that at least a part of the agent contains an antibacterial substance.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION The heat generating bag of the present invention is provided with a heat generating composition which generates heat by contact with oxygen in the air in a breathable bag, and an antibacterial substance is contained in the packaging material and / or the adhesive. And is applied to a heating bag for keeping a human body warm. The main components of the heat-generating composition include oxidizable metal powder, activated carbon, inorganic electrolyte, water, and water retention agent. In addition, if desired, a hydrogen generation inhibitor, an anti-caking agent, and the like can be further mixed.

As the oxidizable metal powder, iron powder, aluminum powder and the like are used, but usually iron powder is used, such as reduced iron powder, atomized iron powder and electrolytic iron powder. Activated carbon acts not only as a reaction aid but also as a water retention agent. Usually, coconut shell charcoal, wood flour charcoal, peat charcoal and the like are used.

As the inorganic electrolyte, alkali metal, alkaline earth metal, heavy metal chloride, alkali metal sulfate and the like are preferable. For example, sodium chloride, potassium chloride, calcium chloride, magnesium chloride, ferric chloride, Sodium sulfate or the like is used.

The water retention agent is not particularly limited as long as it has high water retention and does not cause deterioration during long-term storage of the heat generating bag. Examples of the water retention agent include perlite powder, vermiculite, wood powder, and polymer water absorption. Agents and the like are used.

The composition ratio of the heat-generating composition varies depending on the desired heat-generating performance and cannot be specified unconditionally. For example, 100 parts by weight of oxidizable metal powder and 2.0 parts by weight of activated carbon are used.
To 35 parts by weight, inorganic electrolyte 0.5 to 8.5 parts by weight, water 2
0 to 50 parts by weight, and 0.1 to 20 parts by weight of the water retention agent. In addition, if desired, a hydrogen generation inhibitor, an anti-caking agent, and the like can be added.

The bag having air permeability is one which retains the exothermic composition inside the bag, does not break the bag during use, and has air permeability necessary for obtaining heat generation performance. Regarding the packaging material configuration of the bag, one side of the bag can be a breathable packaging material and one side can be a non-breathable packaging material, but a breathable packaging material can also be used on both sides of the bag.

Examples of the breathable packaging material include a porous film having fine through-holes alone, and a non-breathable packaging material obtained by laminating a non-woven fabric with a polyethylene film or the like so as to have fine holes and have air permeability. A nonwoven fabric in which a nonwoven fabric is bonded to a porous film, or a nonwoven fabric in which fibers are laminated and thermocompressed to control the air permeability is used.

Here, the porous film is a film having fine through holes having a maximum pore diameter of about 0.001 to 20 μm by a methanol bubbling method. For example, the through holes are formed by biaxially stretching a synthetic resin film. Provided or after dispersing inorganic fine powder such as calcium carbonate in molten polyethylene, polypropylene, etc., extruded into a film shape, further stretched the obtained film, such as those provided with through holes . Commercially available products of these porous films include, for example, Porum and NF sheet manufactured by Tokuyama Corporation, Cellpore manufactured by Sekisui Chemical Co., Ltd., Breslon manufactured by Nitto Denko Corporation, and Tyvek manufactured by DuPont. .

As the non-breathable packaging material, polyethylene,
A non-breathable film such as polypropylene, or a non-woven fabric bonded to a polyethylene film or the like is used.

The bag for storing the heat-generating composition according to the present invention usually has two air-permeable packaging materials or a heat-fusible surface between the air-permeable packaging material and the non-air-permeable packaging material. Then, the periphery is heated and fused to form a bag, and the exothermic composition is filled to form a heating bag. The size of the heating bag differs depending on the purpose of use and the mounting site of the heating bag, and cannot be specified unconditionally, but is usually about the same size as a business card,
Alternatively, a postcard up to about four times the size of a postcard is used. Further, the shape of the heat generating bag is not limited to a rectangular shape, but may be a circular shape, an elliptical shape, or a shape that resembles an animal or a plant.

Further, in order to improve the mounting property of the heat generating bag during use, an adhesive may be applied to one surface of the heat generating bag so that the heat generating bag can be attached to clothing or skin.
In this case, the adhesive is usually applied to the surface of the non-breathable packaging material, but may be applied to the surface of the breathable packaging material. When applied to the surface of the breathable packaging material, it is preferable to apply the method by a method that does not impair the air permeability. The application of the pressure-sensitive adhesive to the packaging material may be the entire surface of the application side surface or a part thereof.

The pressure-sensitive adhesive applied to the heat generating bag can fix the heat generating bag to clothing or skin by adhesion, does not cause transfer to the surface to be adhered, and lasts a long time until the heat generating bag is used. Any material that does not deteriorate during storage and does not adversely affect the human body can be used. For example, an acrylic acid-based polymer is used.

The present invention relates to a so-called drawstring-type heat-generating bag in which the heat-generating composition is housed in a substantially spherical shape with one piece of air-permeable packaging material and bound by a clip or the like, in addition to the above-mentioned flat material as the shape of the heat-generating bag. The present invention can be similarly applied to any shape such as a so-called tetra-pack type heat generating bag in which a heat generating composition is stored in a body air permeable bag, a dice type heat generating bag formed of a hexahedral air permeable bag.

In the present invention, the antibacterial substance refers to a substance which suppresses and / or sterilizes the propagation of various bacteria and maintains its effect continuously. As the antibacterial substance used in the present invention, a substance which does not affect the physiological function of the human body and has high safety and which does not generate harmful substances even when the heat generating bag is discarded is used.

Various kinds of antibacterial substances such as inorganic, quaternary ammonium, guanidine, phenol and natural products can be used. For example, inorganic materials include silver zeolite in which silver or zinc is supported on an inorganic carrier, zinc zeolite, silver zirconium phosphate, zinc magnesium magnesium calcium phosphate, silver apatite, and the like. Examples of the quaternary ammonium salts include octadecyl dimethyl (3-trimethoxysilylpropyl) ammonium chloride, benzalkonium chloride, polyoxyethylene trimethyl ammonium chloride, cetyl dimethyl benzyl ammonium chloride and the like.

The guanidine compounds include polyhexamethylene biguanide hydrochloride,
1-hexamethylenebis (5,4-chlorophenyl) biguanide and the like. As phenols, sodium alkylenebisphenol, alkyldimethylammonium salt, parachlormetaxylenol and the like are used. Among fatty acid esters, glycerin fatty acid esters, propylene glycol monofatty acid esters, undecylenic acid and the like are used.

Examples of the copper compounds include phenolic copper chelate resins and regenerated cellulose containing copper sulfide. Examples of natural products include chitosan, tannin, hinokitiol, wasabi oil, bamboo extract extract, hydrochloride of chitin, and complex acetate of seed extract. Others include aminoglucose, methyl p-toluenesulfonate and the like. In addition, as an inorganic metal salt coordinated to the fiber, for example, a zinc sulfate-coordinated acrylic polymer can be used. Further, copper removal may be controlled in the process of producing the recycled fiber, and a fiber in which a copper compound is finely dispersed in the fiber may be used.

In the present invention, these antibacterial substances can be used alone or in various combinations depending on the method of use. The antibacterial substance may be applied to both the packaging material constituting the heat generating bag and the adhesive applied to the packaging material, or may be either the packaging material or the adhesive applied to the packaging material. Further, it may be contained in a part of the packaging material or the adhesive.

The method for incorporating the antibacterial substance into the heat generating bag is not particularly limited. For example, a method in which the antibacterial substance is kneaded in advance in the manufacturing stage of the nonwoven fabric constituting the heat generating bag, or the method in which the antibacterial substance is applied to the nonwoven fabric Or a method of attaching by post-processing such as spraying or impregnating, a method using an inorganic salt coordinated to a nonwoven material, a method of adding an antibacterial substance to an adhesive applied to a heating bag, and the like. .

The amount of the antibacterial substance to be used for the packaging material and the adhesive of the heating bag differs depending on the kind of the antibacterial substance and the method of use, and cannot be specified unconditionally. 0.0001-1
It is about 0 g / m ² . Here, the pure content of the antibacterial substance is
The substance itself has an antibacterial property, for example, zinc in the case of zinc zeolite, undecylenic acid in the case of undecylenic acid, and copper compound in the case where a copper compound is finely dispersed in fibers.

Since nonwoven fabrics having antibacterial properties are commercially available, those commercially available products may be used. For example, antibacterial nonwoven fabric ELTAS manufactured by Asahi Kasei Kogyo Co., Ltd. which has antibacterial properties to nylon nonwoven fabrics. -AG, a Freshy II antibacterial type manufactured by Unicell Co., Ltd., in which a laminated nonwoven fabric of polyester and polypropylene is provided with antibacterial properties, and a chitopoly, manufactured by Fuji Boseki Co., Ltd., in which rayon nonwoven fabrics are provided with antibacterial properties.

According to the present invention, that is, by adding an antibacterial substance to the packaging material of the heating bag or the adhesive applied to the packaging material, the heating bag can be used without adversely affecting the heating characteristics of the heating bag. In addition, it is possible to suppress and / or sterilize the growth of various bacteria around the heat-generating bag and the mounting site of the heat-generating bag. In addition, the present invention can be easily applied to a wide range of heating bags having various sizes, such as heating bags of various sizes, heating bags of various shapes, and the presence or absence of an adhesive coating layer.

The heating bag of the present invention is further sealed in a non-breathable bag and stored until used. FIG. 1 is a plan view, and FIG. 2 is a cross-sectional view along AA, as an example of the heat generating bag of the present invention. Hereinafter, the present invention will be described specifically with reference to Examples, but the present invention is not limited thereto.

[0029]

【Example】

Example 1 Nylon spunbond nonwoven fabric (Antibacterial nonwoven fabric Eltas-AG, manufactured by Asahi Kasei Kogyo Co., Ltd.) containing an inorganic antibacterial substance in a fiber and having a basis weight of 50 g / m ² , a thickness of 105 μm, and a moisture permeability of 280 g / A polyethylene porous film (Poram 100, manufactured by Tokuyama Co., Ltd.) having a thickness of m ² · 24 h was attached to obtain an antibacterial breathable packaging material.

Further, a 50 g / m ² basis weight nylon spunbonded nonwoven fabric (an antibacterial nonwoven fabric, ELTAS-AG, manufactured by Asahi Kasei Kogyo Co., Ltd.) containing an inorganic antibacterial substance in a fiber and a polyethylene film having a thickness of 50 μm are applied. combined, further acrylic pressure-sensitive adhesive containing 1 wt% of silver zeolite was applied at a rate of 25.8 g / m ² non-woven fabric, bonding a release paper siliconized on the adhesive coated surface, the antimicrobial impermeable packaging Material.

Next, the antibacterial air-permeable packaging material and the antibacterial non-air-permeable packaging material with an adhesive are overlapped so that the polyethylene film faces inward, cut into a rectangle having a length of 135 mm × 100 mm, and the periphery is heated and melted. It was formed into a bag.
In addition, the length of the adhesive coating pattern per bag is 1
35mm x 35mm wide adhesive coated part is 135mm long
× Coating was performed so as to be located on both sides of the center of the adhesive-uncoated portion having a width of 40 mm.

In this bag, 47.5% by weight of iron powder, 6.3% by weight of activated carbon, 4.6% by weight of sodium chloride, 3% by weight of water
An exothermic composition consisting of 2.2% by weight, 8.7% by weight of balm curite powder, and 0.7% by weight of a high molecular weight water retention agent was added to 3
6.5 g was filled, and a heating bag was prepared in which both the air-permeable packaging material side and the non-air-permeable packaging material side were subjected to antibacterial treatment. This was further sealed and stored in a non-breathable outer bag.

[0033]

According to the present invention, it is possible to suppress and sterilize the growth of various bacteria on the surface of the heat generating bag and the surrounding clothing on which the heat generating bag is mounted, during use of the heat generating bag.

[0034]

[Brief description of the drawings]

FIG. 1 is a plan view of a heating bag.

FIG. 2 is a sectional view of the heat generating bag taken along line AA.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Heat generation bag 2 Breathable packaging material 3 Non-breathable packaging material 4 Adhesive 5 Release paper 6 Heat generation composition

Claims (1)

[Claims] An exothermic composition which generates heat upon contact with oxygen in the air is applied to a packaging material constituting an exothermic bag and / or to the packaging material in an exothermic bag which is housed in an air-permeable bag. A heating bag, wherein at least a part of the pressure-sensitive adhesive contains an antibacterial substance.