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:
Sep. 07, 2010
Filed:
Jun. 02, 2004
Syunichi Osada, Otsu, JP;
Chie Makiyama, Otsu, JP;
Hirofumi Hosokawa, Hachioji, JP;
Tetsuya Tsunekawa, Otsu, JP;
Syunichi Osada, Otsu, JP;
Chie Makiyama, Otsu, JP;
Hirofumi Hosokawa, Hachioji, JP;
Tetsuya Tsunekawa, Otsu, JP;
Toray Industries, Inc., Tokyo, JP;
Abstract
An objective of the present invention is to provide a film that has a high rigidity and is superior in dimension stability under high temperatures and transparency after heating processes, as well as in moldability within a wide temperature range, which has not been achieved by conventional techniques, and this objective has been achieved by a laminated film that includes 50 or more layers each of which is made of a thermoplastic resin and has a thickness of less than 30 nm or a biaxial oriented polyester film that has a density in a range from 1 to 1.4 g/cm, a heat shrinkage of −2 to 2% in the longitudinal direction at 180° C. and a breaking elongation in a range of 100 to 1000% in at least one direction.