公开(公告)号：EP1640152A4

公开(公告)日：2008-04-23

申请号：EP04745498

申请日：2004-06-02

Applicant: TORAY INDUSTRIES

Inventor： OSADA SHUNICHI ,  MAKIYAMA CHIE ,  HOSOKAWA HIROFUMI ,  TSUNEKAWA TETSUYA

IPC: B32B27/00 ,  B32B27/36

CPC classification number: B32B27/36 ,  B32B27/08 ,  B32B2250/05 ,  B32B2250/244 ,  B32B2274/00 ,  B32B2307/406 ,  B32B2307/412 ,  B32B2307/518 ,  B32B2307/536 ,  B32B2307/704 ,  B32B2307/734 ,  B32B2307/738 ,  B32B2429/00 ,  B32B2439/00 ,  B32B2457/10 ,  B32B2479/00 ,  B32B2553/00 ,  B32B2581/00 ,  H01M2/0257 ,  H01M2/0267 ,  H01M2/0275 ,  H01M2/0287 ,  H01M10/052 ,  H01M10/0525 ,  Y10S428/91 ,  Y10T428/24942 ,  Y10T428/2495 ,  Y10T428/26 ,  Y10T428/31786

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 3 , 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.