JPH0613693Y2 - Use up Cairo - Google Patents

Description

[Detailed Description of the Invention] <Industrial field of application> The present invention relates to a use-use warmer in which a double-sided adhesive tape is attached to a heating element storage bag that stores a composition that generates heat in the presence of air. Is.

<Problems to be Solved by Conventional Techniques and Inventions> Conventionally, an exothermic composition containing iron powder, an oxidation aid, water and a water retention agent such as activated carbon is enclosed in a breathable storage bag, and the breathable storage bag is filled with the heat generating composition. It is known to use Cairo which is further sealed in an airtight bag.

As a proposal for facilitating the wearing of the body warmer after use, a method of attaching an adhesive tape to a breathable storage bag is already known. For example, Japanese Utility Model Publication No. 56-34735 discloses two flat surfaces of the body warmer. A Cairo with a solid or patterned adhesive layer on almost the entire surface of one side,
Japanese Patent No. 718 and Japanese Utility Model Laid-Open No. 61-188719 disclose a body warmer in which an adhesive tape is attached to a part of one side of a heating element storage bag. However, with a warmer that has a normal double-sided tape attached to all or part of the heating element storage bag, when the warmer is peeled off from the body after use, the tape remains attached to the clothing or the double-sided tape tears. However, there was a drawback that the torn tape remained on the clothes.

<Means for Solving Problems> In order to solve the above problems, the inventors of the present invention have diligently studied the functionality of the adhesive tape to be attached to the heating element storage bag, and as a result, the adhesive on both sides of the double-sided adhesive tape has been investigated. The adhesive tape layer, which has a different peeling adhesive strength of 300g / 20mm width, is brought into contact with the heating element storage bag and attached so that the double-sided tape can be used after peeling the body warmer after use. The inventors have found that it is unlikely that the tape will come off from the body warmer and remain on the clothes, and that the problem that the double-sided tape will tear and the torn tape will remain on the clothes will not occur easily, and the present invention has been completed.

That is, the present invention stores a composition that generates heat in the presence of air, and attaches a double-sided adhesive tape to one surface of a heating element storage bag having air permeability on one side or both sides. In, the peeling adhesive strength of the surface of the double-sided adhesive tape that abuts the heating element storage bag is 300 g / 20 mm width or more,
Also, it relates to a body warmer that is characterized by being made stronger than the peeling adhesive strength of the other surface by 50g / 20mm width or more.

<Example> Hereinafter, the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view of an embodiment of the present invention, and FIG. 2 is a sectional view thereof.

In the figure, 1 represents an exothermic composition, which is usually iron powder, an oxidation promoter such as sodium chloride, water, activated carbon and optionally a water retention agent such as wood powder and perlite, a polymeric water absorbing agent, or sodium metasilicate. Although a hydrogen generation accelerating agent such as salt is added, the composition is not limited in the present invention.

Reference numeral 2 is a heating element storage bag for storing the exothermic composition 1, and one side or both sides thereof are provided with air permeability so that the stored 1 comes into contact with air to cause an exothermic reaction during use.

As the material of the heating element storage bag 2, paper or non-woven fabric laminated with a heat-fusible synthetic resin film such as polyethylene or polypropylene, or polyethylene, polypropylene, polyurethanes or the like having fine continuous pores on the surface and inside thereof Examples thereof include thermoplastic films made of plastics and rubbers that have been flexibly modified. The former paper or non-woven fabric film laminated with a heat-fusible synthetic resin is usually formed to have a large number of micropores 3 with the film side inside, and the size of the micropores 3 is The heat-generating composition 1 is appropriately determined in consideration of air permeability in a range that does not leak out. Also, if necessary, stack a thin metal film with high thermal conductivity on the non-breathable surface,
The conductivity of the generated heat can be increased.

On the other hand, the fine continuous pore film may be used alone,
Alternatively, for reinforcement, a thin non-woven fabric or the like that does not impair the flexibility of the storage bag may be laminated and used.

The thickness of the heating element storage bag 2 formed of these films is appropriately selected in consideration of its physical properties, that is, breathability, tear strength, processability, feel, etc.
Used in the range of ~ 3 mm.

The double-sided pressure-sensitive adhesive tape 4 of the present invention, which has different pressure-sensitive adhesive strength on both sides, is composed of a pressure-sensitive adhesive layer 5 that is brought into contact with a heating element storage bag, a base cloth 6, a pressure-sensitive adhesive layer 7 that is attached to clothing, and a separator 8. ing. The adhesives 5 and 7 are obtained by treating the base cloth 6 with an adhesive substance mainly composed of rubber, vinyl acetate, acrylic resin or the like, and as the adhesive substance, particularly in the case of the adhesive layer 7, underwear at the time of use. Transferring to an object such as
Alternatively, a non-transferable one is preferable so that the fiber does not fray when the body warmer is peeled off from an object such as underwear after use.

The double-sided adhesive tape 4 of the present invention has a peeling adhesive strength of the adhesive layer 5 (measured according to the method specified in JIS Z 1528) of 300 g.
/ 20 mm width, preferably 500 g / 20 mm width or more, and is characterized in that it is stronger than the peeling adhesive strength of the adhesive layer 7 by 50 g / 20 mm width, preferably 100 g / 20 mm width or more. That is, as shown in the following test examples, the present invention provides a useful use warmer that solves the problem that the adhesive tape is transferred to the wearer when peeled off from the wearer after using the warmer.

Test Example Peeling off of the pressure-sensitive adhesive layer 5 and the pressure-sensitive adhesive layer 7 The double-sided pressure-sensitive adhesive tape was used by sticking it to a body warmer after use, and examining the state when it was removed from the clothing after use.

The width and length of the double-sided pressure-sensitive adhesive tape 4 are taken into consideration depending on the size of the storage bag 2, but may be arbitrary as long as they can secure the fixing property of the body warmer to the body, and may be further divided into a plurality of pieces. It may be patterned.

In the drawings, only the synthetic resin laminate film type of the storage bag 2 is illustrated, but of course, it may be a fine continuous pore film type, and, unlike FIGS. 1 and 2, a single-sided breathable storage body. Of course, it does not matter if the breathable side of the body is facing the body.

The exothermic body warmer of the present invention containing the exothermic composition 1 thus obtained is enclosed in an airtight bag body to make a product, and after the airtight bag body is crushed during use, heat is generated with the adhesive portion of the present invention. When the body storage bag 2 is attached to the body and used, comfortable and good warmth can be obtained.

<Effects of the Invention> As described above, in the used body warmer of the present invention, the double-sided adhesive tape 4 having different adhesive strengths of the adhesive layers on both sides and the adhesive layer 5 having stronger adhesive strength are used for the heating element storage bag 2 It is a double-sided tape that is applied to the body, and unlike a normal double-sided tape that is attached to the body warmer, it is unlikely that the double-sided tape will remain on the clothes when the body warmer is peeled off after use. You can use it with confidence without worrying about soiling your clothes with tape.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of an embodiment of the present invention, and FIG. 2 is a sectional view thereof. 1 ... Exothermic composition 2 ... Heating element storage bag 3 ... Micropore 4 ... Double-sided adhesive tape 5 ... Adhesive layer 6 ... Base cloth 7 ... Adhesive layer 8 ... Separator

Claims (1)

[Scope of utility model registration request] 1. A composition containing a composition that generates heat in the presence of air,
In a disposable body warmer in which a double-sided adhesive tape is attached to one surface of a heating element storage bag having air permeability on one or both sides, peeling off the surface of the double-sided adhesive tape that contacts the heating element storage bag A handy body warmer characterized by a strength of 300g / 20mm or more and a strength of 50g / 20mm or more stronger than the peeling adhesive strength of the other surface.