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:
Jul. 06, 1982
Filed:
Aug. 20, 1980
Isoo Saito, Okazaki, JP;
Kotaro Fujioka, Nagoya, JP;
Toray Industries, Inc., Tokyo, JP;
Abstract
Process for producing polyamide monofilament including partially orienting polyamide monofilament, steaming the partially oriented monofilament, heating and relaxing under low tension for disturbing the molecular orientation of the skin layer of said monofilament and drawing the relaxed monofilament to raise the molecular orientation of its core. Monofilaments of this invention are high in knot strength and are two-layer structures comprising a core and a skin layer. The monofilaments have an average index of birefringence of at least about 50.times.10.sup.-3 and a degree of molecular orientation in the amorphous region of said skin layer of not more than about 0.5.