JP2008163543A - Gel material contained leather - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a leather material that causes little thermal exchange with the outside air, and can be processed to clothing having excellent heat and cool retention, by using a gel material that has high substance stability, low heat conductivity, scarce fluidity in comparison with gas and liquid and has excellent heat retention property. <P>SOLUTION: This material is obtained by mixing the balls of synthetic resin film 5-coated gel material 2 into the leather base material 1 that is composed of synthetic leather 4. As a polymer gel 2, a gel material of a high polymer such as silicone resin or the like can be used. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to leather which is a raw material of clothing accessories processed mainly into clothing, hats, gloves and footwear.

Up to now, various fabrics and leather processing raw materials for clothing and the like for heat insulation have been proposed and provided.
In any leather material, the strength performance is important, but the most important thing is how to effectively secure an air layer that is excellent in heat insulation and can be reduced in weight. It has become a challenge.
In fabrics, for example, a large amount of air layer is formed, and downwear using light feathers is prized as a luxury product with excellent heat retention.
In addition, animal fur with hair, foamed artificial leather, artificial leather with raised fibers, and the like are used in various applications as materials having high heat insulation and high heat retention by air entrapped between the fibers.

The air itself for obtaining heat insulation performance has a merit that excellent heat insulation can be obtained because the thermal conductivity is as small as 0.022 kal / mh ° C. at 20 ° C.
However, since air is a gas, air movement or circulation occurs in each air gap or each bubble even if the volume is small due to body movement or body temperature. As a result, there is a gap between air bubbles that are in contact with outside air and air bubbles on the skin side. Heat exchange occurs due to temperature communication, and the influence of outside air easily reaches the skin side.
In this heat exchange, the larger the temperature difference between the outside air and the skin surface, the more the air movement and circulation in the voids or bubbles are activated, and the temperature of the outside air tends to affect the skin surface.

On the other hand, for example, it is known that there is subcutaneous fat in the human body, and the subcutaneous fat is decomposed to become heat energy, and the body temperature is effectively maintained by the heat insulation and heat retention performance of the existence itself.
So, for example, even if you try to incorporate fat into artificial leather using its heat insulation and heat retention performance, when the temperature rises, the solid fat becomes liquid fat and dissolves into the tissue of artificial leather. It is very difficult to apply to artificial leather.
In addition, fats and oils are difficult to decompose and change in a short period of time, to rot and to produce a foul odor.
For this reason, this has never been proposed or implemented.

Therefore, the present inventor has a low thermal conductivity (about 0.02 to 0.02 kal / mh ° C.) as a solid material having high material stability with respect to temperature, ultraviolet rays, etc. and having flexibility to be freely deformed. ) And high heat retention performance (heat storage performance), that is, a gel material such as silicone.
Gel materials are inherently easy to deform, so they are very difficult to process, and those with high fluidity are considered to be very difficult to handle, so no one has proposed such artificial leather using gel materials. .

  The present invention has been made in view of such circumstances, and is a gel material having high material stability, low thermal conductivity, almost no fluidity compared to gas and liquid, and excellent heat retention performance. By using, leather is provided as a raw material that is processed into clothing and the like that are less likely to exchange heat with the outside air and have excellent heat and cold insulation properties.

  In order to achieve the above object, the present invention is a gel material-containing leather comprising a leather base material 1 constituting an artificial synthetic leather 4 and containing a polymer gel material 2 coated with a synthetic resin coating 5.

  Moreover, in the said structure, the surface protective film layer 6 which does not permeate | transmit the said polymer gel material 2 is formed in the surface 1a and / or back surface of the said leather base material 1. FIG.

  Furthermore, in the said structure, in the said polymer gel material 2 and / or the said leather base material 1, an antibacterial agent, a fragrance | flavor, a deodorizer, a coloring agent, activated carbon powder and / or particle | grains, ceramic powder | flour and / or particle | grains, It contains at least one additive of metal powder and / or particles.

  The present invention is configured as described above, and a polymer gel material 2 is enclosed in a leather base material 1. The polymer gel material 2 is free to circulate and move freely as seen in gas, although heat energy is taken in and out. Therefore, there is an action that does not facilitate the movement and transfer of temperature in and out of leather. For this reason, when a garment or the like processed with the leather of the present invention is worn, the temperature release from the skin to the outside air is blocked by the polymer gel material 2 (heat insulation function), and the heat insulation action by the conventional bubbles (gas) In contrast, the amount of heat transferred into the polymer gel material 2 is retained inside the substance (heat storage function), and a high heat retaining effect is obtained in the same manner as the subcutaneous fat of the body. On the contrary, even if the outside is hot, the heat is cut off (insulating function) and the inside is kept cool.

And if it is used for wet suits used in cold water and winter clothes in cold regions, it can withstand cold environments for a long time. In addition, by using the leather of the present invention, it is possible to manufacture other warming clothes, warming socks, gloves and the like that can obtain various other high heat retaining performances.
Since the contained polymer gel material 2 is covered with the synthetic resin film 5, it does not leak out. Moreover, when the gel material-containing leather is cut, the gel material in the synthetic resin film 5 cut from the cut surface may leak out, but the amount of the leak is very small, and other gel materials leak. Never leave.

  Furthermore, in the polymer gel material 2 and / or the leather substrate 1, an antibacterial agent, fragrance, deodorant, colorant, activated carbon powder and / or particles, ceramic powder and / or particles, metal powder and / or By containing at least one additive in the particles, the growth of mold and bacteria can be prevented, the fragrance can be emitted, the body odor can be eliminated, the color can be changed to the desired color, and electromagnetic waves can be prevented. It is also possible to impart the characteristics of the additive A.

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, the gel material-containing leather of the present invention contains a polymer gel material 2 covered with a synthetic resin coating 5 formed in a ball shape in a leather base material 1 constituting an artificial synthetic leather 4. It is a thing.
As the polymer gel material 2, a gel material of a polymer compound such as a silicone resin can be used.

As the leather base material 1 of the artificial synthetic leather 4, a knitted fabric, a woven fabric, or a nonwoven fabric, which is a natural fiber, a synthetic fiber, or an inorganic fiber, or a combination of them can be used.
Moreover, it is also possible to use the resin sheet having flexibility, the flexibility and the void-containing resin sheet, or a combination thereof.
And when those leather base materials 1 are comprised in multiple layers, as for those combinations, it is possible to laminate a plurality of the same species or a plurality of different species.

  In addition, as shown in FIG. 2, a surface protective film layer 6 that does not allow the polymer gel material 2 to permeate may be formed on the front surface 1 a and / or the back surface of the leather base material 1 containing the polymer gel material 2. Is possible.

  Furthermore, in the polymer gel material 2 and / or the leather substrate 1, an antibacterial agent, fragrance, deodorant, colorant, activated carbon powder and / or particles, ceramic powder and / or particles, metal powder and / or It is also possible to contain an additive of at least one of the particles.

  Next, although it is difficult to include (insert) the gel material 2 in the leather base material 1, there are various methods for manufacturing the gel material-containing leather having the above-described configurations. Some of the manufacturing methods will be described below.

For example, the polymer gel material 2 is sprayed on the synthetic resin sheet, and the molten synthetic resin is applied or flown over the polymer resin material 2 and then sprayed on the polymer resin material 2 in the film of the molten resin. The polymer gel material 2 is confined with the cured resin coating, and a molten synthetic resin leather base material is applied on or flown over the polymer gel material 2 A gel material-containing leather 2 is produced.
In order to make the polymer gel material 2 multi-layered, for example, the dispersion of the polymer gel material 2 and the application of the molten synthetic resin are alternately repeated a plurality of times, and the polymer gel material 2 is confined with a cured resin film each time. It is also possible to produce a gel material-containing leather by applying a molten synthetic resin leather base material or pouring it onto it.

  In addition, the polymer gel material 2 coated with a synthetic resin coating 5 formed into a ball shape is put into a molten synthetic resin leather base material and mixed by stirring, and placed on a flat surface in a molten state or a rotating roll in a semi-cured state. Thus, it is possible to manufacture the molten synthetic resin leather base material as it is by forming it to a desired thickness.

  Furthermore, the synthetic resin fiber and / or the inorganic fiber, the synthetic resin binder fiber, and the polymer gel material 2 covered with the synthetic resin coating 5 formed in the shape of a ball are stirred and mixed, and heated and pressed to bond the fibers together. Moreover, the nonwoven fabric containing the polymer gel material 2 can also be formed.

  The method of making the polymer gel material 2 covered with the synthetic resin coating 5 formed into a ball shape is to insert a needle of an injector containing the polymer gel material 2 into the synthetic resin coating 5 formed into a ball shape like a balloon. And then injecting the polymer gel material 2 into the synthetic resin film 5 to swell the synthetic resin film, or to make a concave hole by pouring the molten synthetic resin over a surface having a fine concave hole in the shape of a takoyaki A polymer gel material coated with a synthetic resin coating 5 formed into a ball shape, filled with a polymer gel material 2 and then poured again with a molten synthetic resin to be cured. 2 can be produced by various methods such as a method for obtaining 2.

  Thus, in the present invention, the polymer gel material 2 previously coated with the synthetic resin coating 5 is manufactured, and this is mixed in the manufacturing process of the leather substrate 1 such as synthetic resin, synthetic resin fiber, and synthetic fiber binder-containing inorganic fiber. It can be manufactured by a method of making the leather base material 1 melted or by waiting for the leather base material 1 to be cured.

The gel material-containing leather of the present invention can be used as a heat insulating material for wrapping articles in addition to clothes, hats, gloves and footwear to be worn.
It can be used as

It is a typical longitudinal side view of the present invention. It is a typical vertical side view of another form.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Leather base material 1a Surface of leather base material 2 Polymer gel 4 Artificial synthetic leather 5 Synthetic resin film 6 Surface protective film layer

Claims (3)

  A gel material-containing leather comprising a leather base material (1) constituting an artificial synthetic leather (4) and a polymer gel material (2) coated with a synthetic resin film (5).   The gel material-containing leather according to claim 1, wherein a surface protective film layer (6) that does not allow the polymer gel material (2) to permeate is formed on the front surface (1a) and / or the back surface of the leather substrate (1). In the polymer gel material (2) and / or leather substrate (1), antibacterial agent, fragrance, deodorant, colorant, activated carbon powder and / or particles, ceramic powder and / or particles, metal powder and / or Alternatively, the gel material-containing leather according to claim 1 or 2, comprising at least one additive of particles.