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:
Aug. 01, 2017
Filed:
Oct. 13, 2014
Applicant:
Toyobo Co., Ltd., Osaka-shi, JP;
Inventors:
Assignee:
Toyobo Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B 27/08 (2006.01); B32B 27/34 (2006.01); B29C 55/02 (2006.01); B29C 55/14 (2006.01); B32B 27/20 (2006.01); C08J 5/18 (2006.01); B32B 7/12 (2006.01); B29K 77/00 (2006.01);
U.S. Cl.
CPC ...
B32B 27/08 (2013.01); B29C 55/023 (2013.01); B29C 55/143 (2013.01); B32B 7/12 (2013.01); B32B 27/20 (2013.01); B32B 27/34 (2013.01); C08J 5/18 (2013.01); B29K 2077/00 (2013.01); B32B 2250/05 (2013.01); B32B 2250/24 (2013.01); B32B 2264/104 (2013.01); B32B 2307/308 (2013.01); B32B 2307/406 (2013.01); B32B 2307/50 (2013.01); B32B 2307/518 (2013.01); B32B 2307/538 (2013.01); B32B 2307/54 (2013.01); B32B 2307/581 (2013.01); B32B 2307/7244 (2013.01); B32B 2307/732 (2013.01); B32B 2307/734 (2013.01); B32B 2307/744 (2013.01); B32B 2307/746 (2013.01); B32B 2377/00 (2013.01); B32B 2439/70 (2013.01); B32B 2439/80 (2013.01); C08J 2377/00 (2013.01); Y10T 428/24355 (2015.01); Y10T 428/24372 (2015.01); Y10T 428/31728 (2015.04);
Abstract
The invention provides a biaxially stretched multilayer polyamide resin film having 8 or more layers in total and using a same resin composition for 80% based on the ratio of the number of the layers. The film is stretched 2.5 to 5.0 times in the longitudinal direction of the film and has an in-plane orientation coefficient (ΔP) of 0.057 to 0.07 and a strain of 0.1 to 2.0% after boiling treatment.