The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 20, 1988
Filed:
Dec. 15, 1986
Hiroshi Kakiuchi, Kanagawa, JP;
Setsuo Fukuhara, Kanagawa, JP;
Michinobu Fujiwara, Chiba, JP;
Hiroshi Maeda, Tokyo, JP;
Yutaka Shirakashi, Tokyo, JP;
Osamu Asakura, Tokyo, JP;
Yoshihiro Yoneda, Tokyo, JP;
Tetsuo Noda, Tokyo, JP;
Naoyuki Fujita, Tokyo, JP;
Aderans Co., Ltd., , JP;
Abstract
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.