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. 10, 2012
Filed:
Jun. 11, 2008
Eiji Kinoshita, Gifu, JP;
Ieyasu Kobayashi, Gifu, JP;
Mitsuo Tojo, Gifu, JP;
Tomoyuki Kishino, Matsuyama, JP;
Kazuteru Kohno, Iwakuni, JP;
Eiji Kinoshita, Gifu, JP;
Ieyasu Kobayashi, Gifu, JP;
Mitsuo Tojo, Gifu, JP;
Tomoyuki Kishino, Matsuyama, JP;
Kazuteru Kohno, Iwakuni, JP;
Teijin Limited, Osaka-shi, JP;
Abstract
A biaxially oriented laminated polyester film which has excellent dimensional stability to environmental changes such as temperature and humidity variations and excellent flatness and windability. A biaxially oriented laminated polyester film comprising a film layer B on one side of a film layer A and having a surface roughness (RaB) on the film layer B side which is 1.0 nm or more larger than the surface roughness (RaA) on the film layer A side, wherein at least one of the film layers comprises an aromatic polyester (I) composed of a glycol component and a dicarboxylic acid component containing 5 mol % or more and less than 80 mol % of a recurring unit represented by the following formula (A): wherein Ris an alkylene group having 1 to 10 carbon atoms.