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. 11, 2017
Filed:
May. 30, 2012
Kazuhide Sekiyama, Tsuruoka, JP;
Kaori Sekiyama, Tsuruoka, JP;
Mizuki Ishikawa, Tsuruoka, JP;
Ryota Sato, Tsuruoka, JP;
Shinya Murata, Tsuruoka, JP;
Kazuhide Sekiyama, Tsuruoka, JP;
Kaori Sekiyama, Tsuruoka, JP;
Mizuki Ishikawa, Tsuruoka, JP;
Ryota Sato, Tsuruoka, JP;
Shinya Murata, Tsuruoka, JP;
SPIBER INC., Yamagata, JP;
Abstract
An artificial polypeptide fiber of the present invention is an artificial fiber containing a polypeptide as a main component, and has a stress of 350 MPa or more and a toughness of 138 MJ/mor more. A method for producing an artificial polypeptide fiber of the present invention is a method for producing the artificial polypeptide fiber obtained by spinning a spinning solution () containing a polypeptide derived from natural spider silk proteins and performing drawing of at least two stages. The drawing of at least two stages includes a first-stage drawing () in wet heat and a second-stage drawing () in dry heat. Thereby, the present invention provides high-toughness artificial polypeptide fibers having favorable stress and rupture elongation, and a method for producing the same.