Aderans Company Limited

Yutaka Shirakashi

Yoshihiro Yoneda

Hideaki Takahashi

Osamu Asakura

Hiroshi Maeda

Naoyuki Fujita

Tetsuo Noda

Michinobu Fujiwara

Setsuo Fukuhara

Toshihiko Sato

Hiroshi Kakiuchi

Katsuo Sugai

Akemi Irikura

Nobuyoshi Imai

Takayuki Watanabe

Yasuhisa Sotokawa

Kazumi Ii

Mutsuko Watanabe

Hiromi Kojima

An artificial hair and a wig using the same are provided which have the property of thermal deformation expanding upon heating by a hair drier or others used for hair styling. The artificial hairis made by mixing at the pre-determined ratio a semi-aromatic polyamide having a glass transition temperature between 60-120&#xb0; C. and a resin not expanding in said temperature range. The artificial hair may have a sheath/core structure comprising a core portionB and a sheath portion covering the core portion. As the resin not expanding in said temperature range, polyethylene terephthalate or others can be used, and as the sheath, nylon 6 or nylon 66 can be used. Said artificial haircan maintain its shape at room temperature or after shampooing due to thermal deformation by heating in steam atmosphere at temperature of glass transition or higher or about 80-100&#xb0; C.

Artificial hair and wig using the same

A synthetic fiber having an uneven surface structure consisting of wrinkles having ridges and recesses of the surface of the fiber and not presenting specular luster, which may be used, for example, as artificial hair for wigs, can be produced easily and stably by melt-spinning a starting synthetic resin such as nylon and passing the spun monofilament through a cooling bath at a temperature not lower than 30.degree. C. for a period of time sufficient for developing wrinkles in its surface. Inclusion of a pigment such as carbon black in an appropriate amount in the starting material is effective in providing dense distribution of wrinkles.

Synthetic fibers having uneven surfaces method for melt-spinning

A synthetic fiber having an uneven surface structure consisting of wrinkles having ridges and recesses of the surface of the fiber and not presenting specular luster, which may be used, for example, as artificial hair for wigs, can be produced easily and stably by melt-spinning a starting synthetic resin such as nylon and passing the spun mono-filament through a cooling bath at a temperature not lower than 30.degree. C. for a period of time sufficient for developing wrinkles in its surface. Inclusion of a pigment such as carbon black in an appropriate amount in the starting material is effective in providing dense distribution of wrinkles.

Synthetic fibers having uneven surfaces and a method of producing same

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Shinjuku-ku, Japan

Yutaka Shirakashi