JP5257694B2 - Back material for leather and warm shoes - Google Patents

Description

  The present invention relates to a back material for scabbard and a heat insulating shoe using the back material for scabbard.

  A wide variety of properties are required for the shoe lining material. The most basic requirements are (a) The foot does not have a feeling of resistance and gives a good touch, that is, a good touch. (B) It must be hygroscopic. (C) To solve the trade-off between the flexibility to keep in close contact with the feet without gaps and the tough physical properties that can cope with extremely complex movements inside the shoes while walking. Furthermore, (d) the back material for scabbard is a secondary material for manufacturing shoes, so it must be inexpensive. It is.

  In order to solve these various physical properties at the same time, it is required that the back material for scabbard be combined with different materials to form a laminated structure. Furthermore, in order to add heat retaining properties in addition to the properties described above, it is necessary to combine materials having heat retaining properties.

  Conventionally, a wide variety of shoe materials or heat-insulating shoes for heat insulation have been proposed. In the following, conventional heat insulating shoes or heat insulating materials will be examined in light of the requirements for the above-described shoe lining material.

Patent Document 1 describes a composite material having excellent heat retention and heat insulation properties, which is made of a polyurethane film having aluminum deposited on its surface. Patent Document 1 discloses a composite material in which a non-woven fabric for shoe lining is attached to a 25 μm-thick polyurethane coating on which a 0.04 μm-thick aluminum deposition layer is formed. The composite material with a non-woven fabric for shoe lining disclosed in Patent Document 1 has a very thin structure with an aluminum vapor deposition layer thickness of 0.04 μm and a polyurethane coating thickness of 25 μm. As a material, the above-mentioned requirements of resolving the contradicting trade-off between the flexibility to keep in close contact with the foot without any gap and the tough physical property that can cope with extremely complicated movement inside the shoe while walking are satisfied. difficult.

  Patent Document 2 generally describes a moisture permeable and heat retaining material in which a discontinuous layer of aluminum scales is formed on the surface of a polyurethane base material having moisture permeability. Patent Document 2 describes that the moisture-permeable and heat-retaining material described in Patent Document 2 can be used for shoes. However, in the moisture permeable and heat insulating material described in Patent Document 2, the aluminum scale layer is a discontinuous layer. Therefore, when the moisture permeable and heat insulating material described in Patent Document 2 is used as a heat insulating material for shoes, the body temperature of the foot escapes from the discontinuous portion to the outside, which is not preferable.

  Patent Document 3 is generally a vinyl polymer of any one of polystyrene, polyacrylonitrile, polyacrylate, polymethacrylate, sulfonic acid groups, carboxylic acid groups, phosphoric acid groups, or their The inside of a shoe comprising a fibrous structure having at least one hydrophilic group of a metal salt and adhering highly hygroscopic organic fine particles such as a crosslinked polymer crosslinked with either divinylbenzene, triallyl isocyanate or hydrazine The material is described. The in-shoe member described in Patent Document 3 utilizes an exothermic reaction generated when the highly hygroscopic organic fine particles absorb sweat generated in the shoe. However, the in-shoe member described in Patent Document 3 takes 40 to 46 minutes to generate heat (Tables 1 and 2). Furthermore, a complete effect cannot be expected from the point that there is an individual difference in the amount of sweat generated during walking.

Patent Document 4 describes a schematic, there is a thermal effect using foamed fabrics blended with Torumari on to the rear cloth of the shoe the shoe. However, the heat generation mechanism of tourmaline is a so-called pseudo-science and has no theoretical basis.

  In Patent Document 5, a plurality of vacuum heat insulating materials are applied to the bottom, upper, rear and side portions of a shoe, and a vacuum heat insulating material covered with a jacket material having felt on the surface is attached to the inner surface. The footwear is described in which all the outer covering materials of the peripheral portion of the core material are heat-welded and adapted to the shape of each part using a plurality of core materials. However, the vacuum heat insulating material for shoes described in Patent Document 5 is a very complicated one in which a core material is arranged inside a jacket material having gas barrier properties and the inside is decompressed to a vacuum of 1 Pa to 100 Pa. The structure is expensive, and a sheet heating heater or a disposable body warmer is used as the heating member, and there is a risk of low temperature burns.

Japanese Patent Application No. 58-26737 Japanese Patent Application No.59-49158 Japanese Patent Application 2001-297655 Japanese Patent Application 2001-364442 Japanese Patent Application No. 2006-34838

  However, in the above-described prior art, which is a basic requirement required for a shoe lining material for shoes, (i) it does not give resistance to the foot but gives a good touch, that is, a good touch. (B) It must be hygroscopic. (C) Resolving the contradictory trade-off between the flexibility to keep in close contact with the feet without any gap and the tough physical properties that can cope with extremely complex movements inside the shoe while walking. Furthermore, (d) the back material for scabbard is a secondary material for manufacturing shoes, so it must be inexpensive. Can't satisfy all of

Means for solving the above-mentioned problems are obtained by laminating and integrating four materials having different physical properties, and have the configurations described in the following items.

1. A 0.22 mm thick fiber assembly selected from the group consisting of taffeta, lawn, shantung, desin, palace, georgette, twill and satin, bonded to the back of the crust;
An aluminum deposited film having a thickness of 0.01 mm bonded to the fiber assembly;
A foam layer having a thickness of about 2.0 mm adhered to the aluminum deposited film; and
A backing layer having a thickness of 0.44 mm adhered to the foam layer and contacting the foot; and composed of four layers laminated in this order with the aluminum surface of the aluminum vapor-deposited film facing the foot side. 2.67mm shoe lining material.

2. 2. The shoe material according to claim 1, wherein the aluminum deposited film is deposited on a substrate film selected from the group consisting of polypropylene, nylon and polyethylene .

3. The backing material for shoe sachets according to claim 1 or 2 , wherein the foamed layer bonded to the aluminum vapor-deposited film is urethane, chloroprene, or ethylene / propylene / diene / terpolymer .

4). The lining layer adhered to the foam layer and contacting the foot is a woven fabric, a knitted fabric or a non-woven fabric made of natural fibers, synthetic fibers, or a blend of natural fibers and synthetic fibers . Back material for shoe leather.

5. A heat insulating shoe equipped with the back material for a shoe sash according to any one of claims 1 to 4.

According to the first aspect of the present invention, the following effects are achieved.
1. (A) Giving a good feeling without giving a resistance to the foot, that is, having a good touch. (B) It must be hygroscopic. (C) Resolving the contradictory trade-off between the flexibility to keep in close contact with the feet without any gap and the tough physical properties that can cope with extremely complex movements inside the shoe while walking. Further, (d) the back material for scab is a secondary material for manufacturing shoes, and therefore, the back material for sash for shoes satisfying various properties such as low cost is provided.

2. By selecting the fiber assembly from the group consisting of taffeta, lawn, shantung, desin, palace, georgette, twill and satin, it is possible to appropriately select from a wide range of materials in consideration of cost requirements.

3. The thickness of the fiber assembly bonded to the back surface of the husk is 0.22 mm, the thickness of the aluminum vapor-deposited film is 0.01 mm, the thickness of the foam layer is about 2.0 mm, and the thickness of the backing layer is 0.00. 44 By making the total thickness about 2.67 mm as mm, considering the workability and cost, etc., various properties required for the above-mentioned shoe lining material for shoes, ie, (a) resistance to the foot Give a good feel without feeling, that is, feel good. (B) It must be hygroscopic. (C) Resolving the contradictory trade-off between the flexibility to keep in close contact with the feet without any gap and the tough physical properties that can cope with extremely complex movements inside the shoe while walking. Furthermore, (d) since the back material for scab is a secondary material for manufacturing shoes, a back material for sash for shoes satisfying the low cost is provided.

According to the invention described in claim 2, the versatile aluminum vapor deposition film can be used by depositing the aluminum vapor deposition film on a base film selected from the group consisting of polypropylene, nylon and polyethylene. This increases the range of material selection. In addition, since the aluminum vapor deposition film is less likely to cause pinholes due to bending than the aluminum foil laminate film, it can sufficiently cope with the complicated and subtle movement of the foot inside the shoe during walking.

According to the invention described in claim 3, in the invention described in claim 1 or 2, the foamed layer bonded to the aluminum vapor deposition film is urethane, chloroprene, or ethylene / propylene / diene / terpolymer. Considering cost requirements, a wide range of materials can be selected as appropriate.

According to the invention described in claim 4, in the invention described in any one of claims 1 to 3, the backing layer bonded to the foamed layer and contacting the foot is natural fiber, synthetic fiber, or natural fiber. By using a woven fabric, a knitted fabric or a non-woven fabric made of a synthetic fiber blend, it can be appropriately selected from a wide range of materials in consideration of cost requirements.

According to the invention described in claim 5, since it is a heat insulating shoe fitted with the scabbard backing material of the invention described in any one of claims 1 to 4, the disadvantages of the same type of conventional shoes described above are eliminated. Improvement Warm boots are provided.

A taffeta having a thickness of 0.22 mm as measured by a dial gauge was prepared as a fiber composite bonded to the back surface of the husk. An aluminum vapor deposition film having a thickness of 0.01 mm was prepared by measurement with a dial gauge. As the foam layer, urethane foam having a thickness of about 2.0 mm as measured with a caliper was prepared. Nylon (trade name “150G NYLEX”) having a thickness of 0.44 mm as measured with a dial gauge was used as the backing layer. These were bonded and integrated to form a four-layer material. At this time, it is important that the aluminum vapor-deposited film is bonded with the aluminum surface facing the foot side. As a result, the heat generated during walking while wearing the shoes is reflected by the aluminum surface and stays inside the shoes, thereby increasing the temperature inside the shoes.

A shoe in which the back material of the present invention is bonded to the back of the shoe scab (hereinafter referred to as “the present case”) and a shoe in which the conventional back material that does not use an aluminum vapor deposited film is bonded to the back of the shoe sash (hereinafter referred to as the shoe) "Control") was put on the left and right feet of 100 monitors in an environment of 0 ° C, and the internal temperature change was photographed by thermography. The measurement results are as follows.
After 10 minutes at 0 ° C., the control was 23.8 ° C. and the present case was 24.0 ° C. After 20 minutes at 0 ° C., the control was 21.8 ° C. and the present case was 22.5 ° C. After 30 minutes at 0 ° C., the control was 20.4 ° C. and the present case was 22.8 ° C. After 40 minutes at 0 ° C., the control was 19.9 ° C. and the present case was 23.4 ° C. After 50 minutes at 0 ° C., the control was 19.8 ° C. and the present case was 24.4 ° C.

As a result of the above-described experiment, on average, the control was 21.4 ° C. and the present case was 23.3 ° C. The difference was 1.9 ° C. At first glance, the effect of both looks like a slight difference. However, even if the human body temperature rises by 1 ° C., it can be felt sensitively and may affect the physical condition in some cases. Therefore, the temperature difference of the toe after 50 minutes after wearing in an environment of 0 ° C. is 1. 9 ° C. is an unexpected remarkable effect. However, since the experiment measured the average temperature of the toe part, the temperature difference between the two was a slight difference, but the whole part of the foot experienced an obvious difference. This was confirmed by all 100 monitors.

As described above, the back material for a shoe sash having a four-layer structure according to the present invention uses an aluminum vapor-deposited film as a constituent material, so that heat generated during walking is reflected on the aluminum surface and the inside of the shoe. By using urethane foam as a constituent material, the taffeta used as a fiber aggregate that absorbs moisture such as sweat generated during walking and touches the back of the shoe is versatile. Ideal as a material.

Claims (5)

A 0.22 mm thick fiber assembly selected from the group consisting of taffeta, lawn, shantung, desin, palace, georgette, twill and satin, bonded to the back of the crust;
An aluminum deposited film having a thickness of 0.01 mm bonded to the fiber assembly;
A foam layer having a thickness of about 2.0 mm adhered to the aluminum deposited film; and
A backing layer having a thickness of 0.44 mm adhered to the foam layer and contacting the foot; and composed of four layers laminated in this order with the aluminum surface of the aluminum vapor-deposited film facing the foot side. 2.67mm shoe lining material. 2. The shoe material according to claim 1, wherein the aluminum deposited film is deposited on a substrate film selected from the group consisting of polypropylene, nylon and polyethylene . The backing material for shoe sachets according to claim 1 or 2 , wherein the foamed layer bonded to the aluminum vapor-deposited film is urethane, chloroprene, or ethylene / propylene / diene / terpolymer . The lining layer adhered to the foam layer and contacting the foot is a woven fabric, a knitted fabric or a non-woven fabric made of natural fibers, synthetic fibers, or a blend of natural fibers and synthetic fibers . Back material for shoe leather. A heat insulating shoe equipped with the back material for a shoe sash according to any one of claims 1 to 4.