logo

For the Inventor, By the Inventor

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.:

US 10286597 B1

PDFFull Text
Date of Patent:
May. 14, 2019

Filed:

Oct. 03, 2016

Polyester film, laminate, and method for producing polyester film

Applicant:

Unitika Ltd., Hyogo, JP;

Inventors:

Ken Akamatsu, Kyoto, JP;

Masami Matsumoto, Kyoto, JP;

Assignee:

Unitika Ltd., Hyogo, JP;

Attorney:

Fildes & Outland, P.C.

Primary Examiner:

Vivian Chen

Int. Cl.
CPC ...
B32B 7/12 (2006.01); B32B 15/08 (2006.01); B32B 15/09 (2006.01); B32B 27/36 (2006.01); B32B 37/12 (2006.01); B29C 48/08 (2019.01); B29C 55/12 (2006.01); B29C 55/14 (2006.01); B29D 7/01 (2006.01); C08L 67/02 (2006.01); C08L 67/03 (2006.01); B29C 48/00 (2019.01); C08J 5/18 (2006.01); B29C 47/00 (2006.01); B29C 55/00 (2006.01); B29C 71/02 (2006.01); B29K 67/00 (2006.01); B29K 509/02 (2006.01); B29L 7/00 (2006.01);
U.S. Cl.
CPC ...
B29C 55/143 (2013.01); B29C 47/0004 (2013.01); B29C 47/0021 (2013.01); B29C 47/0057 (2013.01); B29C 48/0018 (2019.02); B29C 48/022 (2019.02); B29C 48/08 (2019.02); B29C 55/005 (2013.01); B29C 55/12 (2013.01); B29C 71/02 (2013.01); B32B 7/12 (2013.01); B32B 15/09 (2013.01); B32B 37/12 (2013.01); C08J 5/18 (2013.01); B29C 55/14 (2013.01); B29D 7/01 (2013.01); B29K 2067/00 (2013.01); B29K 2509/02 (2013.01); B29L 2007/008 (2013.01); B32B 15/08 (2013.01); B32B 27/36 (2013.01); B32B 2307/50 (2013.01); B32B 2307/518 (2013.01); B32B 2307/708 (2013.01); B32B 2367/00 (2013.01); C08L 67/02 (2013.01); C08L 67/03 (2013.01); Y10T 428/31681 (2015.04); Y10T 428/31786 (2015.04);
Abstract

The present invention provides a polyester film, wherein an arbitrary direction on the film surface is defined to have an angle of 0°, and three directions are defined to have angles of 45°, 90°, and 135°, respectively, clockwise from the 0° direction, and the difference between the maximum value and the minimum value of the stresses at 5% elongation in the four directions is 50 MPa or less, the difference between the maximum value and the minimum value of the stresses at 15% elongation in the four directions is 70 MPa or less, and the modulus of elasticity in any one of the four directions falls within a range from 2.0 to 3.5 GPa.

Find Patent Forward Citations

Loading…