POLYESTER FILMS, THEIR USE FOR OBTAINING COMPOSITE FILMS AND RESULTANT COMPOSITE FILMS

摘要

PCT No. PCT/FR89/00683 Sec. 371 Date Aug. 23, 1991 Sec. 102(e) Date Aug. 23, 1991 PCT Filed Dec. 27, 1989 PCT Pub. No. WO90/07543 PCT Pub. Date Jul. 12, 1990.Orientated semi-crystalline polyester films characterized in that they have a planar orientation coefficient DELTA p of greater than or equal to 165x10-3 and a degree of transverse shrinkage of less than or equal to 2.7% at 200 DEG C. These films are suitable as a support for obtaining composite films by extrusion-coating of an olefin polymer.