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:
Mar. 06, 2012
Filed:
Sep. 28, 2006
Hironori Goda, Matsuyama, JP;
Miyuki Numata, Matsuyama, JP;
Mie Kamiyama, Matsuyama, JP;
Nobuyuki Yamamoto, Osaka, JP;
Tamio Yamamoto, Matsuyama, JP;
Hironori Goda, Matsuyama, JP;
Miyuki Numata, Matsuyama, JP;
Mie Kamiyama, Matsuyama, JP;
Nobuyuki Yamamoto, Osaka, JP;
Tamio Yamamoto, Matsuyama, JP;
Teijin Fibers Limited, Osaka, JP;
Abstract
The method of producing an islands-in-sea type composite spun fiber having an island component diameter of 1 μm or less according to the present invention comprises drawing (superdrawing) with a total draw ratio of from 5 to 100 an undrawn islands-in-sea type composite spun fiber having been prepared by spinning at a spinning speed of from 100 to 1,000 m/min, at temperatures higher than the glass transition points of both the polymer forming the sea component and the polymer forming the island components of the composite spun fiber.