JPH0411014A - Highly hygroscopic fiber material and its manufacturing method - Google Patents

Abstract

PURPOSE:To obtain the subject fiber having excellent moisture-absorptivity and permeability, high flexibility in knitting and weaving and good feeling by kneading superfine powder of animal protein fiber to a polymer of chemical fiber material, forming a film from the mixture and slitting the film. CONSTITUTION:For example, superfine powder of oxhide 2 preparatorily dried to a water-content of 5-1,000ppm and superfine powder of a water-soluble substance (e.g. water-soluble gelatin) are kneaded to a polyurethane resin fiber 1. The water-soluble substance is removed from the mixture by washing with water during a film-forming process to obtain a film having a number of through holes 3 left after the dissolution of the water-soluble substance. The film is slit into thin strips to obtain the objective fiber material.

Description

Detailed Description of the Invention [Industrial Field of Application] The present invention relates to composite fiber material technology, and is capable of forming yarns that have excellent moisture absorption and permeability, can be freely knitted or woven, and have a good feel and feel. The present invention relates to a highly hygroscopic fiber material with a new structure and a method for producing the same.

[Prior art] Traditionally, fiber materials that can replace natural fibers include recycled fibers such as rayon, semi-synthetic fibers such as acetate, nylon,
Various fibers are used, including synthetic fibers such as polyester, acrylic, polyethylene, and polypropylene. Among these fiber materials, there are synthetic fiber materials such as polyurethane resins that have relatively excellent moisture permeability and moisture absorption, but compared to natural fibers, their moisture absorption and moisture permeability are generally inferior, and their texture and texture are poor. The feel is also not good.

However, when natural materials are added to synthetic fibers, the problem arises that the spinnability deteriorates as the proportion of the addition increases, and sufficient effects cannot be expected.

[Problems to be Solved by the Invention] The present invention was made for the purpose of improving the properties of the above-mentioned fiber materials, and provides a highly hygroscopic fiber material with a novel structure to which additives can be added in a high proportion, and a method for producing the same. The purpose is to provide the following.

In addition, by forming it as a blended yarn, it has excellent hygroscopicity to provide a dry feel without stickiness, high moisture permeability to suppress stuffiness and provide a comfortable wearing feeling, and condensation control to provide excellent heat insulation. The purpose of the present invention is to provide a highly hygroscopic fiber material that has excellent waterproofness and durability, and provides a texture and feel similar to natural fibers.

[Means for Solving the Problems] The highly hygroscopic fiber material and the method for producing the same according to the present invention include one or more animal protein fibers that have been turned into ultra-fine powder,
After kneading with a polymer of synthetic fiber, semi-synthetic fiber, or recycled fiber, or a polymer of chemical fiber material made of a mixture of two or more of these polymers, the kneaded composition is formed into a film, and the film is formed into a fine pitch. The gist of the manufacturing method is to cut and make fibers, and the highly hygroscopic fiber material is a highly hygroscopic material constructed by this manufacturing method. In addition, ultrafine powdered one or more animal protein fibers and ultrafine powdered water-soluble substances can be combined into a polymer of synthetic fiber, semi-synthetic fiber, or regenerated fiber, or a mixture of two or more of these polymers. The kneaded composition is kneaded with a polymer of chemical fiber material, and then the kneaded composition is formed into a film. During the film-forming process, the ultrafine powdered water-soluble substance is removed by washing with water, and the film is coated with a large number of perforations consisting of dissolution traces. The gist of this method is to form pores and to make the film porous by cutting the film at a fine pitch and making it into fibers.

Here, animal protein fiber refers to the protein that forms the skin, bones, eyes, and feathers of animals, including human hair, which is also called "collagen fiber" or "keratin fiber," and includes cowhide, The term "ultra-fine powdered animal protein fibers" refers to all animal leathers such as pigskin leather and sheepskin leather, and bird leathers, etc., and refers to animal protein fibers with a particle size smaller than several hundred microns.

The water-soluble substances refer to water-soluble gelatin, polysaccharides such as starch, and inorganic substances such as salts.

More specifically, the addition ratio of one or more kinds of ultrafine powdered animal protein fibers to the polymer is 1 to 99%.
% by weight, and the particle size of animal protein fiber is 0.1 to 1.
00 μm is preferable.

As the fiber material, the following can be effectively used.

Synthetic resin fiber materials nylon, polyester, polyurethane, vinylon, vinylidene, polyvinyl chloride, acrylic.

polyethylene, polypropylene, etc.

Semi-synthetic resin material Acetate, diacetate, triacetate, etc.

recycled fiber Rayon et al.

[Function] It is well known that natural leather, which is an animal protein fiber, is a material with excellent hygroscopicity, moisture permeability, and texture.

The structure of the fiber material of the present invention is such that one or more kinds of animal protein fibers made into ultra-fine powder and a water-soluble substance made into ultra-fine powder are kneaded into a chemical fiber material to form a film,
Since water-soluble substances are dissolved by washing with water during the manufacturing process of the film, countless fine pores are formed on the surface of the fibers, which are traces of dissolution of the water-soluble substances.

Therefore, the fiber material obtained by cutting the film has a large number of pores and animal protein fibers on its surface, which improves the moisture absorption characteristics, moisture permeability characteristics, and texture of the synthetic fiber material.

The characteristics of the above fiber material will be explained below.

Figure 1 is a graph showing the moisture absorption characteristics when changing the atmosphere from room temperature 23℃ and humidity 30% to room temperature 30℃ and humidity 80%. 2
It is a graph showing moisture release characteristics when the atmosphere is changed to 3° C. and 30% humidity.

After adding and mixing 33 weight percent of cowhide leather powdered to an average particle size of 5 μm and 20 weight percent of water-soluble gelatin powdered to an average particle size of 5 μrn to a polyurethane resin, a solution of the material with a Nov size of 2 μm was added. The film is formed as a film using a wet discharge machine and washed with water during the film forming process to constitute the film A that forms the fiber material of the present invention. A nylon resin film B formed to the same thickness as the film A and a normal urethane resin film C were selected as comparative materials.

As can be seen from Figures 1 and 2, the moisture absorption and moisture release properties of Film A are dramatically superior to those of Nylon Resin Film B and Urethane Resin Film C. Film A has excellent water supply ability. The water supplied to the film A rapidly releases moisture when the humidity of the atmosphere becomes low.

This characteristic is similarly exhibited in a fiber material obtained by cutting Film A into fine widths, and by spinning this, a highly hygroscopic fiber material having excellent moisture absorption and moisture release properties can be obtained.

In addition, since the highly hygroscopic fiber material and its manufacturing method are formed into a sheet and cut into fibers,
In particular, fibers with poor tensile strength can be obtained by increasing the proportion of animal protein fiber added. In this case, the highly hygroscopic fiber material and its manufacturing method can be used as a blended yarn by blending it with other synthetic fibers.

As a result, the highly hygroscopic fiber material of the present invention has particularly excellent moisture absorption and moisture release properties, and the blended yarn in which this fiber material is entwined can maximize the proportion of animal protein fiber powder added to the fiber material. You will be able to choose. When a fabric or nonwoven fabric knitted or woven by dazzling light is used, for example, as clothing, sweat or water vapor tends to move from the high-humidity atmosphere on the skin side to the low-humidity atmosphere on the outside air side.

Furthermore, for dyeing, ultrafine powdered one or more animal protein fibers and ultrafine powdered water-soluble substances can be used as synthetic fibers, semi-synthetic fibers, polymers of regenerated fibers, or combinations of these two or more types. It appears on the surface of the fibers of chemical fiber materials made of a mixture of polymers, and because animal protein fibers are easily dyed by acid dyes and chemical fiber materials are difficult to dye, they appear as spots under a microscope. shading is formed.

Therefore, a fiber cloth material woven or knitted with the blended yarn of the highly hygroscopic fiber material having the above structure (1) has excellent moisture absorption and moisture release properties and can provide a dry feel without stickiness.

(2) It has excellent water vapor permeability and can provide a feeling of wearing without feeling stuffy.

(3) It has characteristics such as having a texture similar to that of natural fibers, and (4) it does not cause dew condensation even when used in a low-humidity atmosphere, and can suppress the feeling of coldness.

Also, depending on the dyeing characteristics of the fiber against acid dyes, (5)
A yarn made up of a fiber bundle made of the above-mentioned fibers is dyed darker than a yarn made only of chemical fiber materials.

Therefore, (6) It is possible to form a shading pattern on the fabric to be woven or knitted by using the yarn whose fiber bundle is made up of the above-mentioned fibers and the yarn which is made only of the chemical fiber material.

[Example 7] Examples of the highly hygroscopic fiber material and the manufacturing method thereof according to the present invention will be described below.

) 11 examples.

20% by weight of cowhide leather finely ground to an average particle size of 5 μm was added to an acrylic resin solution dissolved in dimethylformamide.
, 20% by weight of cocoon filaments finely ground to an average particle size of 5 μm are added and thoroughly mixed.

After the above process, a dry film molding machine is used to form a film with a thickness of 30 μm.
A thin sheet was obtained.

The sheet was then cut to a width of 30 μm to obtain a highly hygroscopic fiber material of 8 denier.

FIG. 3 is a sketch under a microscope showing a cross section of this fiber material. 6 is an acrylic resin body, 2 is finely crushed cowhide leather, and 7 is finely crushed cocoon thread. In this way, a porous fiber material was obtained.

Example 2 Into a polyurethane resin solution dissolved in dimethyl sulfoxide, 20% by weight of cowhide leather finely ground to an average particle size of 5 μm and 2% of water-soluble gelatin finely ground to an average particle size of 5 μm were added.
Add 0% by weight and mix thoroughly.

At this time, the finely ground cowhide leather is dried (pre-dried) at 120° C. for 2 hours or more to have a moisture content of 200 ppm.

After the above process, a dry film molding machine is used to form a film with a thickness of 30 μm.
A thin sheet was obtained. Note that the water-soluble gelatin powder added together with the cowhide leather was dissolved in water in the sheet forming bath.

The sheet was then cut to a width of 30 μm to obtain a highly hygroscopic fiber material of 8 denier.

FIG. 4 is a sketch under a microscope showing a cross section of this fiber material. 1 is a polyurethane resin main body, 2 is finely ground cowhide leather, and 3 is a through hole formed by a dissolution trace of finely ground water-soluble gelatin. In this way, a porous fiber material was obtained.

FIG. 5 shows an enlarged view of a yarn constituted by a bundle of the highly hygroscopic fiber material A obtained in the above example.

In addition, Figure 6 shows that the highly hygroscopic fiber material A is nylon fiber 5,5
This shows an enlarged view of the blended yarn finished in...

That is, the highly hygroscopic fiber material according to the present invention can be usefully used by blending it with such other fibers.

It should also be noted that the blended yarn having the above structure can be easily produced by knitting or weaving, or as a nonwoven fabric.

[Effects of the Invention] As described above, the highly hygroscopic fiber material and the method for producing the same according to the present invention have excellent moisture absorption and desorption properties, and also have excellent water vapor permeability, so that they can be used in low-temperature atmospheres. In addition to not causing dew condensation even when the material is porous, it has excellent characteristics such as flexibility. In addition, fibers knitted or woven with these fibers are useful not only as materials for ordinary clothing, but also as materials for sports equipment that involves sweating, as well as for bags, shoes, interior skin materials, steering covers, etc. It can also be used as a base cloth for artificial leather and synthetic leather for interior decoration, as a wool for flocked materials, and as batting for quilts.

In addition, in the highly hygroscopic fiber material according to the present invention, due to the dyeing characteristics of the fibers with respect to acid dyes, the yarns constituting the fiber bundle with the fibers of the present invention are dyed more deeply than the yarns constituted only with the chemical fiber material. It has the characteristics of being able to form a shaded pattern on the fabric woven or knitted with the yarns that make up the fiber bundles and the yarns that are made only of chemical fiber materials, and the effects after implementing the present invention are extremely large.

[Brief explanation of the drawing]

FIG. 1 is a graph showing the moisture absorption characteristics of the highly hygroscopic fiber material of the present invention and other synthetic fibers, FIG. 2 is a graph showing the moisture release characteristics of the highly hygroscopic fiber material of the present invention and other synthetic fibers, and FIG. 3 and 4 are enlarged cross-sectional views showing examples of the highly hygroscopic fiber material according to the present invention, FIG. 5 is an enlarged view showing the highly hygroscopic fiber material yarn, and FIG. 6 is the highly hygroscopic fiber material. FIG. 2 is an enlarged view showing a blended yarn. A... Highly hygroscopic fiber material, 1... Polyurethane resin fiber, 2... Cowhide leather, 3... Perforated hole, 5... Nylon fiber, Fig. 1 Δ Highly hygroscopic w1 fiber 4 ．． ! Topolyurethane 411 fat W1 fiber 2 Cowhide leather, 3 6 Acrylic I3I fat fiber through hole, 5 Nylon fiber 7 I thread. yLt Kanae (H") Fig.

Claims (1)

[Claims] (1) Ultrafine powder of one or more animal protein fibers made from a polymer of synthetic fiber, semi-synthetic fiber, or regenerated fiber, or a mixture of two or more of these polymers. After kneading with a chemical fiber material polymer, the kneaded composition is formed into a film,
A method for producing a highly hygroscopic fiber material by cutting the film into fine pitches. (2) The ultrafine powdered one or more animal protein fibers to be kneaded with the polymer of the chemical fiber material are pre-dried to a moisture content of 5 to 1,000 ppm in advance. A method for producing a highly hygroscopic fiber material. (3) The highly hygroscopic fiber material and method for producing the same according to claim 1 or 2, wherein the synthetic resin fiber is a linear polymer such as nylon, polyester, polyurethane, acrylic, polyethylene, or polypropylene. (4) The highly hygroscopic fiber material and method for producing the same according to claim 1 or 2, wherein the semi-synthetic resin is acetate. (5) The highly hygroscopic fiber material and method for producing the same according to claim 1 or 2, wherein the recycled fiber is rayon. (6) The highly hygroscopic fiber material and method for producing the same according to claim 2, wherein the water-soluble substance is a water-soluble gelatin, a polysaccharide such as starch, or an inorganic substance such as a salt. (7) Ultrafinely powdered one or more animal protein fibers are mixed into synthetic fibers, semi-synthetic fibers, regenerated fiber polymers, or a chemical fiber material consisting of a mixture of two or more of these polymers. After coalescing and kneading, the kneaded composition is formed into a film,
A highly hygroscopic fiber material characterized by cutting the film into fibers at a fine pitch. (8) One or more types of ultra-fine powdered animal protein fiber and ultra-fine powdered water-soluble substance are combined into a polymer of synthetic fiber, semi-synthetic fiber, regenerated fiber, or a polymer of two or more of these types. After kneading with a chemical fiber material polymer consisting of a mixture of the following, the kneaded composition is formed into a film, and in the film forming process, the ultrafine powdered water-soluble substance is removed by washing with water, and the film is made up of a large number of dissolution marks. 1. A highly hygroscopic fiber material comprising through-holes and cut into fibers by cutting the film at a fine pitch. (9) The high-humidity fiber material according to claim 7 or 8, wherein the ultrafine powdered animal protein fiber to be kneaded with the polymer of the chemical fiber material is a powder predried to a moisture content of 5 to 1,000 ppm. (10) The highly hygroscopic fiber material according to claim 7 or 8, wherein the synthetic resin fiber is a linear polymer such as nylon, polyester, polyurethane, acrylic, polyethylene or polypropylene. (11) Claim 7 or 8 wherein the semi-synthetic resin is acetate.
Highly hygroscopic fiber material as described. (12) The highly hygroscopic fiber material according to claim 7 or 8, wherein the recycled fiber is rayon. (13) The highly hygroscopic fiber material according to claim 8, wherein the water-soluble substance is a water-soluble gelatin, a polysaccharide such as starch, or an inorganic substance such as a salt. (14) The highly hygroscopic fiber material according to claim 7 or 8, characterized in that the fiber is dyed with an acid dye to form a patchy dye.