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Artificial hair and wig using the same

a technology of artificial hair and wig, applied in the field of artificial hair, can solve the problem of still having a rigidity for bending lower than natural hair, and achieve the effects of lowering the rigidity for bending, excellent appearance, and difficult to recogniz

Inactive Publication Date: 2009-05-21
UNIHAIR COMPANY LIMITED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0024]According to the present invention, the artificial hair can be provided which has a sheath / core structure, and has feeling (appearance, tactile and texture), various physical properties, especially rigidity for bending and its changing behavior by humidity close to those of natural hair. Further, the wig using the artificial hair having said sheath / core structure can provide natural feeling to the wearer and the surrounding observers more than the conventional wig using artificial hair made of a single synthetic fiber material.
[0025]Especially, by making artificial hair of a sheath / core structure with a sheath portion of a polyamide resin with rigidity for bending lower than a core portion, the rigidity for bending changes depending upon temperature and humidity, resulting in the artificial hair showing the behavior closer to human hair, and by said artificial hair of the present invention, even when curl is set, the extension of curl upon wetting with water and recovery of curl upon removing moisture under natural standing can show the behavior similar to natural hair.
[0026]Therefore, with the wig of the present invention, when worn in the rain, or under the environment of high humidity, the artificial hair softens, hangs down, and its bulkiness disappears, by the change characteristics of rigidity for bending by moisture absorption of artificial hair, that is, lowering of rigidity for bending with humidity rise, and when the absorbed water is released by natural standing or drying, artificial hair stands up gradually to return to the original state. As a result, since a wig can be obtained which shows the same behavior as if natural hair is growing on a scalp, it can be a wig of excellent appearance, hard to recognize as a wig.

Problems solved by technology

As mentioned above, various synthetic fiber materials have their own merits and weak points, respectively, and among them, specific polyamide fibers, especially nylon 6 and nylon 66, are in practical use because of their superior properties, but they still have a problem of having rigidity for bending lower than natural hair.

Method used

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  • Artificial hair and wig using the same
  • Artificial hair and wig using the same
  • Artificial hair and wig using the same

Examples

Experimental program
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Effect test

example 1

[0101]Explanation is next made in detail of examples of the present invention.

[0102]Using the spinning machine 20 shown in FIG. 3, the artificial hair 10 of Example 1 was manufactured. As a polyamide resin for the core portion 1B, nylon 6T (TOYOBO, LTD.) was used, and as a polyamide resin for the sheath portion 1A, nylon 6 (TOYOBO, LTD.) was used. For the quenching bath 24, hot water of 80° C. was used. By setting the sheath / core volume ratio as 1 / 7, and the outlet temperature at 310° C., the artificial hair 10 was manufactured. The sheath / core weight ratio was 12 / 88 for the artificial hair 10 of Example 1.

[0103]As a coloring agent, resin chips were used which were made by blending a polyamide resin used either for said sheath 1A or for core 1B and a pigment in pre-determined ratio, heating and melting, and cooling after kneading. These resin chips used as a coloring agent were defined as the master batch. As the master batch used in Example, the resin chips containing 3 weight % bl...

example 2

[0110]The artificial hair 10 of the sheath / core structure was manufactured by the same condition as Example 1, except that the sheath / core volume ratio was made 1 / 5 by adjusting respective gear pumps 21B and 22B. The sheath / core weight ratio of the artificial hair 10 of Example 2 was 16.1 / 83.9.

example 3

[0111]The artificial hair 10 of the sheath / core structure was manufactured by the same condition as Example 1, except that the sheath / core volume ratio was made 1 / 3 by adjusting respective gear pumps 21B and 22B. The sheath / core weight ratio of the artificial hair 10 of Example 3 was 24.2 / 75.8, and its diameter was 80 μm.

[0112]FIG. 7 is a graph showing the stretching ratio dependency of rigidity for bending of the artificial hair 10 of Example 3. In the figure, an abscissa axis shows a stretching ratio, and an ordinate axis shows rigidity for bending: 10−5 gfcm2 / strand. The measurement condition was temperature 22° C. and humidity 40%. As is obvious from FIG. 7, the rigidities for bending for stretching ratios 3 and 5.5 were 430×10−5 gfcm2 / strand and 720×10−5 gfcm2 / strand, showing that rigidity for bending increased linearly with the increase of stretching ratio.

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Abstract

An artificial hair and a wig using the same are provided which have such feeling as appearance, tactile and texture and preferable physical properties similar to natural hair, wherein an artificial hair 1 has a sheath and core structure comprising a core portion 1B and a sheath portion 1A covering said core portion 1B, and by making the core portion 1B of a polyamide resin, especially a semi-aromatic polyamide resin, and the sheath portion 1A of a polyamide resin having a rigidity for bending lower than the core portion 1B, especially a linear saturated aliphatic polyamide resin, the rigidity for bending, for example, can be made to have a value close to that of natural hair, and further its variation behavior depending upon humidity can be controlled quite similar to natural hair, thereby the wig made of it as a material has natural feeling, so that the wig having an excellent appearance can be offered.

Description

TECHNICAL FIELD[0001]This invention relates to artificial hair having physical properties and feeling similar to natural hair and a wig using the same.BACKGROUND ART[0002]Wigs have been manufactured and used since ancient age with natural hair as the material, but recently such problems as the supply limitation of natural hair material and others caused the manufacture to increase using synthetic fibers as hair material for wigs. In this case, the synthetic fiber to be used is selected with the primary target that it is basically close to natural hair in terms of feeling and physical properties.[0003]The artificial hair materials to be used are synthetic fibers of acrylic, polyester, and polyamide in many cases, but acrylic fibers in general have low melting point and poor heat stability, so that they have such weak points as poor shape preservation after permanent wave setting, resulting in distortion of setting, for example, such as curl and the like when soaked in warm water. Pol...

Claims

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Application Information

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IPC IPC(8): A41G3/00
CPCA41G3/0083D01F8/12D01D10/00A41G3/00A41G5/00
Inventor SHIRAKASHI, YUTAKAWATANABE, TAKAYUKIASAKURA, OSAMUIRIKURA, AKEMIIL, KAZUMIWATANABE, MUTSUKOKOJIMA, HIROMISUGAWARA, FUMITAKA
Owner UNIHAIR COMPANY LIMITED
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