JP2005046335A - Exothermic bag for foot - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an exothermic bag for a foot using exothermic composites to generate heat by touching oxygen in the air which warms the foot and stimulates a point of a sole to promote health without damaging a heating capacity. <P>SOLUTION: The exothermic composites are constituted to adhere each other by exothermic reaction and form a solid almost evenly to stimulate the point of the sole when the exothermic bag is used. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  TECHNICAL FIELD The present invention relates to a foot exothermic bag, and more particularly, a foot exothermic bag that uses a heat generating composition that generates heat upon contact with oxygen in the air. The present invention relates to a foot fever bag that promotes health by stimulating acupuncture points on the soles of the feet by solid substances that adhere to each other.

  Conventionally, a heat-generating bag containing a heat-generating composition that generates heat when it comes into contact with oxygen in the air, mainly composed of oxidizable metals such as iron powder, activated carbon, inorganic electrolyte, and water, is stored in a breathable inner bag, etc. As widely used. The general structure of these heat-generating bags includes an air-permeable inner bag having air holes such as micropores and needle holes, an oxidizable metal powder that generates heat upon contact with oxygen in the air, activated carbon, inorganic It contains a heat-generating composition mixed with electrolyte, water, etc., and in order to shut off from outside air and prevent water from evaporating and diffusing to the outside during the period until it is further used. The inner bag is sealed with a non-breathable outer bag.

In such a heat generating bag, the components, filling amount, etc. of the heat generating composition, the air hole distribution of the inner bag packaging material, the oxygen permeability, etc. are set to preferable conditions, and an appropriate heat generating performance (initial heating rate, maximum It is important to obtain temperature, exothermic duration, etc. In addition, there is a demand for the exothermic composition not to be biased inside the inner bag and for the generation of a solid material that causes discomfort during the mounting of the exothermic bag. The exothermic bag in which no solid matter is generated is, for example, an exothermic bag using zinc as the oxidizable metal powder of the exothermic composition (Japanese Patent Laid-Open No. 2001-212167), and the exothermic composition and the hot melt adhesive are held in the gap There is a heat-generating bag (Japanese Patent Laid-Open No. 10-127680) using a sheet-shaped heating element in which a nonwoven fabric is superposed on another nonwoven fabric, heated and compressed, and impregnated with water or an aqueous inorganic electrolyte solution.
JP 2001-212167 A JP-A-10-127680

However, depending on the mounting position of the heat-generating bag, a heat-generating bag that can provide a comfortable sensation that stimulates the pot may be preferable to a heat-generating bag that does not feel strange at all. For example, it is known to use an insole with an insole in footwear and stimulate the acupuncture points of the foot to promote health, and this can also be applied to fever bags. It is believed that there is. However, heat-generating bags manufactured under conditions that produce solids are generally considered to deteriorate heat-generating performance, and no such heat-generating bags have been developed so far.
Therefore, the problem to be solved by the present invention is to provide a heat generating bag for a foot that can warm a foot and stimulate a pot on the back of the foot to promote health without impairing heat generation performance.

  As a result of intensive studies to solve these problems, the present inventors have stored the composition of the exothermic composition uniformly with respect to the horizontal direction of the inner bag and biased with respect to the thickness direction. The heat generating bag can be obtained in such a way that a solid material is generated without impairing heat generation performance by storing the composition of the whole uniformly, locally biased, or by granulating the heat generating composition. And reached the heat generating bag for feet of the present invention.

  That is, the present invention relates to a foot heat generating bag in which a breathable inner bag containing a heat generating composition that generates heat upon contact with oxygen in the air is sealed in a non-breathable outer bag. Is a heat-generating bag for feet, which is configured to adhere to each other by an exothermic reaction to produce a solid, and to stimulate a pot on the sole of the foot.

  INDUSTRIAL APPLICABILITY The present invention is applied to a heat-generating bag for feet that uses a heat-generating composition that generates heat upon contact with oxygen in the air, and is particularly effective in that it can stimulate a pot efficiently when worn on an arch. .

In the exothermic bag for feet of the present invention, the exothermic composition that generates heat upon contact with oxygen in the air is a mixture of oxidizable metal powder, activated carbon, inorganic electrolyte, water, water retention agent, etc. Things are used.
The oxidizable metal powder is iron powder, aluminum powder or the like, but usually iron powder is used, and reduced iron powder, atomized iron powder, electrolytic iron powder or the like is used. Activated carbon is used as a water retention agent in addition to the reaction aid, and usually coconut shell charcoal, wood dust 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 and the like. Is used.
The water retention agent is not particularly limited as long as it has high water retention and does not change in quality during the long-term storage of the heat-generating bag. For example, pearlite powder, vermiculite, wood powder, polymer water absorption agent, etc. Used.

In the present invention, it is preferable not to use a material having a low bulk density in order to effectively stimulate the pot on the sole of the foot, and the bulk density of the exothermic composition after preparation is 1.2 g / cm. It is preferable to select to be ³ or more.
Further, the composition ratio of the exothermic composition varies depending on the target exothermic performance and cannot be specified unconditionally. For example, with respect to 100 parts by weight of the oxidizable metal powder, 2.0 to 35 parts by weight of activated carbon, 0 inorganic electrolyte 0.5 to 8.5 parts by weight, water 20 to 50 parts by weight, and water retaining agent 0.1 to 20 parts by weight. In addition, a deodorizing agent, a hydrogen generation inhibitor, and the like can be added as desired.

  In the foot exothermic bag of the present invention, the exothermic composition as described above adheres to each other by an exothermic reaction during use of the exothermic bag to form a solid, and the foot of the person wearing the exothermic bag It is housed in the inner bag in a configuration that will stimulate the vase on the back. In the present invention, a flat bag is usually used as the inner bag. However, when the inner bag is a flat bag, the solid material in the present invention is usually 1.0 mm in terms of a disk shape. The above-mentioned thickness and a size having a diameter of 3.0 mm or more, preferably a thickness of 2.0 mm to 5 mm and a size having a diameter of 5.0 to 10 mm or more. Further, when the inner bag is not a flat bag, it is usually a size having a diameter of 2.0 mm or more, preferably a size having a diameter of 3.0 to 10 mm in terms of a spherical shape.

Hereinafter, although the heat-generating bag for legs of the present invention is explained in detail based on Drawing 1 and Drawing 2, the present invention is not limited by these.
FIG. 1 is a plan view showing an example of an inner bag of a heat generating bag for legs of the present invention. 2 is a cross-sectional view showing an example of the aa ′ plane in the inner bag of FIG. The inner bag in FIG. 1 shows an example of an inner bag having a shape suitable for mounting on an arch, and FIG. 2 shows the stored state of the exothermic composition in the inner bag before use. is there.

  The exothermic bag for legs of the present invention is a composition in which the exothermic composition housed in the inner bag adheres to each other by an exothermic reaction during use of the exothermic bag to produce a solid matter. There is no particular limitation on the means. As such means, for example, in the process of producing a heat generating bag, there can be mentioned a method in which the composition of the heat generating composition is biased as shown in FIGS. 2 (1), (2) and (3). The distribution of the exothermic composition 4 in FIG. 2 does not indicate the dense state of the exothermic composition, but one or more components selected from oxidizable metal powder, activated carbon, inorganic electrolyte, water, and water retention agent are It shows that it is stored in a biased manner. Further, in FIG. 2, portions where the distribution states of the points in the inner bag are the same indicate that these portions have the same composition.

  The inner bag shown in FIG. 2 (1) shows a configuration in which the composition of the heat generating composition 4 is stored uniformly in the horizontal direction of the inner bag and biased with respect to the thickness direction. Moreover, the inner bag shown in FIG. 2 (2) shows the structure which accommodated the composition of the exothermic composition 4 uniformly and locally biased as a whole. In these cases, since the exothermic composition is partially biased, the exothermic composition tends to adhere to each other by the exothermic reaction over time during use of the exothermic bag, As a whole, the exothermic composition is almost uniform, so that the exothermic performance is not greatly impaired.

  2 (1) and 2 (2), the degree of bias of the exothermic composition is such that the content of any component of the exothermic composition is locally different by 2 to 20% at the maximum. When the deviation of the exothermic composition is less than 2% at the maximum, a solid matter cannot be produced or a solid matter having a sufficient size cannot be produced. Moreover, when the magnitude | size of the bias | inclination of a heat-generating composition exceeds 20% at maximum, there exists a possibility that heat-generating performance may be impaired.

The inner bag shown in FIG. 2 (3) shows a configuration in which a part or all of the exothermic composition is previously stored as the granulated product 5. With such a configuration, the exothermic composition in the granulated product easily adheres to each other during the use of the exothermic bag to produce a solid.
Moreover, in the heat-generating bag for feet of the present invention, a better effect can be obtained by storing, together with the heat-generating composition, a solid material that stimulates the pot of the foot in the inner bag. As such a solid material, glass, ceramic, or the like can be used. When a granulated product, glass, ceramic, or the like is used, one having a size corresponding to the above-described sphere or disk is used.

The inner bag in the present invention holds the exothermic composition in the bag with the above-described configuration, does not cause bag breakage during use, and has air permeability necessary for obtaining heat generation performance. It is made of a flexible packaging material so that the heating bag can be brought into close contact even when the surface is curved or uneven, such as the soles of the feet.
The inner bag is usually made of two breathable packaging materials, or a breathable packaging material and a non-breathable packaging material, with the heat-fusible surfaces facing each other, and the periphery is heat-sealed. Then, it is formed into a bag shape and filled with a heat generating composition to form a flat inner bag as shown in FIG.

Examples of the air-permeable packaging material include a packaging material made of a porous film having fine through-holes, or a non-breathable packaging material in which polyethylene film is laminated on a non-woven fabric so that fine holes are opened to give air permeability. A material, a packaging material in which a nonwoven fabric is bonded to a porous film, or a packaging material made of a nonwoven fabric in which fibers are laminated and thermocompression-bonded to control air permeability are used.
Examples of the non-breathable packaging material include non-breathable films such as polyethylene and polypropylene, or those obtained by bonding a nonwoven fabric to a polyethylene film or the like.

As the inner bag in the present invention, the thickness of the inner bag packaging material is reduced so that the solids produced by the exothermic compositions fixed to each other by the exothermic reaction can easily transmit the stimulus to the pot on the sole of the foot. It is preferable. Therefore, it is preferable that the packaging material used for the inner bag is composed of two or less layers of packaging material.
Further, the inner bag in the present invention can be provided with a pressure-sensitive adhesive layer on one surface in order to adhere to footwear or socks. When one side of the flat bag is made of a breathable packaging material and the other side is made of a non-breathable packaging material, an adhesive layer is usually provided on the non-breathable packaging material side. The surface of the pressure-sensitive adhesive layer is usually covered with release paper or the like until it is used.

As the size and shape of the inner bag, those suitable for the mounting part of the sole of the foot are used. The shape of the inner bag in the horizontal direction is usually a circle, an ellipse, a semicircle, a triangle, a trapezoid, a rice ball, or a similar shape. In addition, as the shape in the thickness direction, it is generally possible to store a large amount of the exothermic composition at the center point (or the center of gravity point) and swell it from the periphery. It is preferable to make the shape which raised the part which shifted | deviated from the center point (or gravity center point) of a bag. By setting it as such a shape, the pot of the sole of a foot can be stimulated efficiently.
The inner bag according to the present invention is an outer bag made of a non-breathable film such as polyethylene or polypropylene in order to block outside air during the period until use and to prevent water from evaporating and escaping to the outside. It is sealed with a fever bag for the feet.

  In the exothermic bag for legs of the present invention, the exothermic compositions adhere to each other by an exothermic reaction, and a solid material is generated almost uniformly in the bag. Therefore, the foot heating bag of the present invention can efficiently warm the foot without impairing the heat generation performance, and stimulates the pot on the sole of the foot with the solid matter generated during use to promote health. It is possible to promote.

  EXAMPLES Next, although an Example demonstrates this invention concretely, this invention is not limited by these.

  As a single-sided packaging material, a microporous polyethylene film having a thickness of 90 μm and a 200 μm-thick nylon non-woven fabric are used, and as another single-sided packaging material, a 100 μm-thick polyethylene film having an adhesive layer is used. The wrapping materials were overlapped so that the polyethylene surfaces were in contact with each other, cut into a semicircle having a radius of 50 mm, and the circumferential portion was heated and fused to produce an inner bag as shown in FIG.

Moreover, iron powder 6.73g (67.3wt%), activated carbon 0.56g (5.6wt%), zeolite 0.45g (4.5wt%), polymer water-absorbing agent 0.07g (0.7wt%), A exothermic composition comprising 0.25 g (2.5 wt%) of sodium chloride and 1.90 g (19.0 wt%) of water was prepared in a nitrogen atmosphere and stored in the inner bag. Bonded by wearing.
Next, vibration was applied to the inner bag manufactured in this way, and the composition of the heat generating composition was biased with respect to the thickness direction of the inner bag. Further, the inner bag was sealed in a non-breathable outer bag to form a heat generating bag, and left in a test room at a temperature of 20 ° C. and a relative humidity of 60% for about one week.

  Of the 10 exothermic bags produced as described above, the exothermic bags were disassembled, and the composition of the uppermost and lowermost exothermic compositions stored in the inner bag was investigated. As a result, the average content of the iron powder was 62.7 wt% for the uppermost layer and 71.8 wt% for the lowermost layer. For the other five heating bags, after removing the inner bag from the outer bag in a test room at a temperature of 20 ° C. and a relative humidity of 60%, a temperature sensor is attached to the non-breathable packaging surface of the inner bag. A person put this on an arch through a sock, and then put on the shoe and stopped the heat test. As a result, the maximum temperature on the inner bag surface was 42.1 ° C. with an average value of 5 pieces, and the duration of 35 ° C. or more was 6.5 hours with an average value of 5 pieces. Moreover, many solids with a thickness of 1 mm or more and a diameter of 3 mm or more, which were generated by fixing the exothermic compositions to each other, could be confirmed in the used inner bag.

Comparative Example 1
An exothermic composition comprising the same components as in Example 1 was prepared with good mixing under a nitrogen atmosphere, and an inner bag similar to that in Example 1 was produced.
Next, without applying vibration to the produced inner bag, it was sealed in a non-breathable outer bag to form a heat generating bag, and left in a test room at a temperature of 20 ° C. and a relative humidity of 60% for about one week.

  Of the 10 exothermic bags thus manufactured, the exothermic bags were disassembled and the compositions of the uppermost and lowermost exothermic compositions contained in the inner bag were investigated. As a result, the average content of the iron powder was 67.2 wt% for the uppermost layer and 67.5 wt% for the lowermost layer. There was no significant difference in the content of other components between the uppermost layer and the lowermost layer. Further, the other five heat generating bags were subjected to a heat generation test in the same manner as in Example 1. As a result, the maximum temperature of the inner bag surface was 42.2 ° C. with an average value of 5 pieces, and the duration of 35 ° C. or more was 6.4 hours with an average value of 5 pieces. Moreover, the big solid like Example 1 was not able to be confirmed in the inner bag after use.

The top view which shows the example of the inner bag of the heat-generating bag for legs of this invention Sectional drawing which shows the example of the a-a 'surface in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Inner bag 2 Bonding part 3 Inner bag packaging 4 Exothermic composition 5 Granulated material

Claims (13)

  A heat generating bag for a foot, in which a breathable inner bag containing a heat generating composition that generates heat upon contact with oxygen in the air is sealed in a non-breathable outer bag, wherein the heat generating composition is mutually bonded by an exothermic reaction. A fever bag for a foot, which is configured to adhere to produce a solid matter and stimulate a pot on the sole of the foot.   The heating bag for legs according to claim 1, wherein the solid matter has a thickness of 1.0 mm or more and a diameter of 3.0 mm or more in terms of a disk shape.   The heating bag for feet according to claim 1, wherein the solid matter has a diameter of 2.0 mm or more in terms of a spherical shape.   The foot heating bag according to claim 1, wherein the solid material is set so as to be almost uniformly dispersed in the inner bag.   The heat-generating bag for feet according to claim 1, wherein the composition of the heat-generating composition stored in the inner bag is stored in a biased manner with respect to the thickness direction of the inner bag.   The foot exothermic bag according to claim 1, wherein the composition of the exothermic composition stored in the inner bag is stored locally biased.   The foot exothermic bag according to claim 1, wherein the exothermic composition is granulated. The exothermic bag for feet according to claim 1, wherein the exothermic composition has a bulk density of 1.2 g / cm ³ or more.   The foot exothermic bag according to claim 1, wherein the inner bag contains a solid material that stimulates the pot of the foot together with the heat generating composition.   The heating bag for legs according to claim 1, wherein the packaging material of the inner bag is composed of a packaging material having two or less layers.   The heat generating bag for legs according to claim 1, wherein the inner bag is a laminate of two packaging materials.   The heat generating bag for a foot according to claim 11, wherein the shape of the inner bag is a circle, an ellipse, a semicircle, a triangle, a trapezoid, a rice ball, or a similar shape.   The exothermic bag for legs according to claim 11, wherein the exothermic composition is stored in a part other than the center point of the inner bag so that the part is raised from its peripheral part.

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