JP2607414Y2 - Disposable body warmers used in footwear - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a disposable body warmer used in footwear, and an object of the present invention is to provide a disposable body warmer capable of exerting an appropriate heating effect in footwear such as shoes.

[0002]

2. Description of the Related Art Disposable warmers are widely used today, and in particular, Japanese Patent Laid-Open Publication No.
According to Japanese Patent No. -14927, a disposable body warmer can be appropriately applied to each part of a human body requiring a thermal effect using underwear or the like without requiring any special equipment.

Various studies have been made on the use of a disposable body warmer in footwear such as shoes, and the inventor of the present invention disclosed in Japanese Patent Application Laid-Open Nos. 1-164366 and 2-131760. Proposals have been made and these have been put to practical use.

[0004]

The disposable body warmer as described above can provide a favorable thermal effect, but when used in shoes, it is a restricted space whose peripheral side is enclosed, However, it is difficult to make a favorable use because of the difficulty in setting the cartridge stably. The structure disclosed in Japanese Patent Application Laid-Open No. 2-14927 is not suitable for use in shoes in terms of shape, and has a disadvantage that it is not easy to apply to a part requiring a high heat effect especially in a cold region.

[0005] JP-A-1-164366 and JP-A-2-13
In the case of 1760, even if a disposable body warmer can be used in shoes, special insole-like insoles are required, and each time the insole is used, take out the insole from inside the shoes and set the disposable body warmer, The operation of reloading and wearing it is complicated, and the usage condition specified in the disposable warmer storage section provided on such insole is used. Cannot be applied, and a favorable heating effect cannot be obtained.

[0006]

SUMMARY OF THE INVENTION The present invention has been studied to solve the problems of the prior art as described above, by specifying the form of a disposable body warmer and by specifying the bonding portion to a sock or the like. It has succeeded in obtaining a favorable heating effect in a shoe or the like in a cold region or the like, as follows.

(1) A storage bag formed into an arc shape at one end side has an air permeability of 300 to 10 according to the JISK7129A method.
Is a 00g / m ² · day one side and 2000~5000g / m ² ·
The other side of the day is formed by a film piece having a different air permeability, the exothermic composition is stored in the storage bag, and a plurality of pressure-sensitive adhesive application rows are formed on the film piece having a low air permeability in the storage bag. A disposable body warmer for use in footwear, characterized in that:

(2) The storage bag containing the exothermic composition is
The disposable body warmer used in footwear according to claim 1, characterized in that it is sealed in a non-breathable container for each individual.

[0009]

[0010]

[0011]

[0012]

A storage bag having one end formed in an arc shape is formed by a gas-permeable membrane piece, the heat-generating composition is stored in the storage bag, and a plurality of pressure-sensitive adhesive application rows are arranged on one surface of the storage bag. This allows the storage bag to be adhesively set on socks, etc. in response to the form of the toe of the foot, and by piercing a shoe, etc., the storage bag is simple for the point where the user feels the coldest feeling like the toe of the foot. In addition, the storage bag is accurately set to give the heating effect.

One side and the other side of the storage bag having one end formed in an arc shape are formed by film pieces having different air permeability, and the heat generating composition is stored in the storage bag and the air permeability in the storage bag is formed. By arranging a plurality of pressure-sensitive adhesive application lines on a small number of film pieces, the amount of air flow on the human body joint surface via socks and the like is reduced, and the amount of air flow on the outer surface side is increased, thereby achieving appropriate heat generation.

The air permeability is 3 according to the JIS K7129A method.
One side of 2000-1000 g / m ² · day and 2000-5
The amount of heat generated in the stored exothermic composition is appropriately controlled by forming the storage bag with the other surface of which is 000 g / m ² · day.

That is, since the device according to the present invention is designed and developed so as to obtain appropriate ventilation and heat generation under limited ventilation conditions in shoes, 300 to 1000 g / m ² · day.
It is sufficient to use only the bag, but in such a case where the ventilation is not restricted such as when the shoes are taken off, the ventilation volume becomes large and the temperature becomes high and it may swell with steam pressure, and under such swelling conditions When the load of the foot is suddenly applied, the storage bag may burst.

The rupture of the storage bag as described above can be prevented by providing a needle hole or the like in the storage bag, but in the case of a needle hole or the like, the stored heat-generating composition is leaked and stored. Since the bag is soiled and its commercial value is reduced, a porous film of 2000 to 5000 g / m ² · day having high air permeability is polymerized on the outside thereof to release water vapor, and the storage bag is ruptured and soiled by the exothermic composition. To prevent it.

Further, by setting the above-mentioned porous film portion on the side not facing the skin surface of the foot or the like in the storage bag, the steam is removed by the load of the foot and the high-temperature steam which has escaped is sprayed on the inner surface of the shoe. Since it does not blow directly to the surface, the risk of burns was prevented.

Methods for controlling the air permeability and moisture permeability of the composite porous film as described above include a perforated film and lamination of a porous film with a non-woven fabric using a partial pattern adhesive, and the method is as follows. Specific examples of the structure of the composite porous film of 2000 to 5000 g / m ² · day Porous film Air permeability 200 to 700 seconds / 100 cc (Oken type air permeability meter) Moisture permeability 7,500 to 9000 g / m ² · 24H (Lissy moisture permeability) total) (40 ℃, 90%) perforated film (PE film) opening ratio 9.3% pore size 0.7~0.8mm hole number 600 spunbonded nonwoven fabric having a basis weight 50 g / m ² the 2000~5000g / m ²・ Specific range of each film and spunbond for forming composite porous film of day Porous film Air permeability 200 to 700 sec / 100cc (Oken type air permeability meter) Water vapor permeability 7500 to 9000 g / m ²・24H (Rissy moisture permeability meter) (40 ° C, 90%) Perforated film (PE film) Opening ratio 1-20% Pore diameter 0.1-2.0 mm Number of holes 300-6000 Spunbond Nonwoven fabric weight 30-100 g / m ²

Since two storage bags containing the exothermic composition are enclosed in a non-breathable container and hermetically sealed, heat is generated until the non-breathable container is opened for display at a store or for use by a customer. The progress of the exothermic reaction of the exothermic composition is prevented, and a set of exothermic composition storage bags is simultaneously prepared by opening to obtain an accurate and quick heating effect.

Since the pressure-sensitive adhesive application line is formed of a non-transferable pressure-sensitive adhesive, the pressure-sensitive adhesive does not stain the inside of the shoe and the like while facilitating the use of the adhesive for socks and the like. It can be used without being detached from socks or the like, and without polluting the socks or the like.

[0021]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a storage bag according to an embodiment of the present invention; FIG. A front and back surface 10 is formed by the gas permeable membrane pieces 1 and 2, and the exothermic composition 3 is accommodated in the storage bag 10 as shown in FIG. 1 and sealed so that the composition 3 is not discharged. .

The air-permeable membrane pieces 1 and 2 are made of a material which does not easily cause a feeling of fouling due to the adhering of fine powder or the like by the contained exothermic composition 3 and has an appropriate strength or toughness. As an example, the membrane piece 1 is formed by laminating polyester spun pond, perforated polyethylene and porous polyethylene, and the membrane piece 2 is a membrane piece which employs a porous film and has a required permeability and moisture permeability. .

The air permeability and moisture permeability of the membrane pieces 1 and 2 are different between the membrane pieces 1 and 2. Specifically, the membrane piece 1 is 3050 ± 500 g / m 2 according to the JISK7129A method (moisture sensor method). ² · day, membrane piece 2 is 6
20 ± 250 g / m ² · day was adopted.
m ² · day, and a suitable film piece 2 can be selected within a range of 300 to 1000 g / m ² · day.

In the storage bag 10 described above, a predetermined amount of the exothermic composition 3 already known as a disposable body warmer is stored. As the exothermic composition, water,
Activated carbon, burned vermiculite, wood flour, and a mixture of auxiliary agents such as salt. By contact with air (oxygen), a moderate amount of heat is given to the human body as a heating effect. It is flat and attached to the human body.

In the present invention, a plurality of rows 4 of non-transferable pressure-sensitive adhesives are arranged on one side of the storage bag 10 as described above, preferably on the above-mentioned film piece 2. The pressure-sensitive adhesive application line 4 may be a linear application line as shown in the drawing, a dot-like or dashed-line application line, or may be a curved line or a curved line that is not a straight line. In any case, a portion that does not adhere to a sock or the like is interposed between the plurality of pressure-sensitive adhesive application rows 4 so that the foot wearing the sock can move freely.
It is assumed that the moisture permeability through the inside of the membrane piece 0 is secured on substantially the entire surface of the membrane piece 2.

As the non-transferable pressure-sensitive adhesive layer, a pressure-sensitive adhesive of an organic solvent type such as a rubber type, an acrylic type or a vinyl acetate type, or an aqueous type is used. For example, a mixture of an acrylic monomer and a functional monomer in an amount of 1 to 10% by weight is used. As the functional monomer, the following general formulas I to
III is added, for example, in an amount of 1 to 8% by weight, all of which are known.

[0027]

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In the formula, R ₁ represents a lower alkyl group having 1 to 4 carbon atoms, and R ₂ represents a hydrogen atom or a methylol group.

[0029]

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Wherein R ₁ is a hydrogen atom or a methyl group, R ₂ is a hydrogen atom or an alkyl or allyl group having 1 to 6 carbon atoms, and R ₃ is an alkyl group having 1 to 18 carbon atoms. Is shown.

[0031]

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Wherein R ₁ represents a hydrogen atom or a methyl group. R ₂ and R _{3 each} represent a hydrogen atom or an alkyl group having 1 to 4 carbon atoms.

The storage bag 10 of the present invention manufactured as described above is a non-breathable storage bag in order to avoid the progress of an exothermic reaction in the handling, storage or display process since the storage bag 10 is permeable. In the present invention, two storage bags 10 are accommodated in the non-breathable storage body 6 as shown in FIG. However, even if two storage bags 10 are stacked and stored in this way, each storage bag 10
Since the thickness is 2 to 4 mm as described above, it does not become extremely bulky. In addition, an opening 8 is formed in the non-breathable container 6 to facilitate removal.

[0034]

[Effects of the Invention] According to the present invention as described above, it is possible to simply and accurately employ the arc-shaped portion in a region requiring the most heat effect in a cold region, such as a toe portion of a foot, In addition, it can be freely applied to appropriate positions such as a toe or a heel by using a sock or the like, and has both an effect of not contaminating the inside of the shoe and the like. It is a device.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing an example of the present invention, which is thicker for clarity.

FIG. 2 is a plan view thereof.

FIG. 3 is a perspective view of the product of the present invention, showing a packaging state during storage, display, handling of cargo, and the like.

FIG. 4 is a cross-sectional view, which is the same as that of FIG. 2 but is thickly illustrated for clarity.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Membrane piece 2 Membrane piece 3 Heat generating composition 4 Adhesive application line 5 Arc-shaped part 6 Non-breathable container 7 Release paper 8 Opening opening 10 Storage bag

Claims (2)

(57) [Scope of request for utility model registration] 1. A storage bag formed in an arc shape on one end side has an air permeability of 300 to 1000 g / kg according to JIS K7129A method.
m ² · day and the other surface of 2000 to 5000 g / m ² · day are formed by membrane pieces having different air permeability, and the exothermic composition is accommodated in the storage bag and the storage bag is A disposable body warmer for use in footwear, wherein a plurality of pressure-sensitive adhesive-coated rows are formed on a film piece having low air permeability. 2. The storage bag containing the exothermic composition is sealed in a non-breathable container for two pieces.
A disposable body warmer for use in footwear according to item 1.