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:
Apr. 29, 2003
Filed:
Feb. 01, 2002
Tadashi Koyanagi, Nobeoka, JP;
Takao Abe, Nobeoka, JP;
Teruhiko Matsuo, Nobeoka, JP;
Yousei Mitsumori, Miyazaki, JP;
Asahi Kasei Kabushiki Kaisha, Osaka, JP;
Abstract
The present invention provides a polytrimethylene terephthalate composite fiber characterized in that the composite fiber is a plurality of single filament which comprises two kinds of polyester components laminated to each other in a side-by-side manner or an eccentric sheath-core manner, at least one polyester component is polytrimethylene terephthalate and the composite fiber satisfies the following conditions: the content of trimethylene terephthalate cyclic dimer in polytrimethylene terephthalate is 2.5 wt % or less, the fiber-fiber dynamic friction coefficient is from 0.2 to 0.4, the degree of intermingling is from 2 to 60 point/m and/or the number of twists is from 2 to 60 T/m and the fiber size fluctuation U% is 1.5% or less.