POLYESTER FILM FOR METAL SHEET LAMINATION AND USE THEREOF.

摘要

A polyester film excellent in the workability for can manufacture, such as lamination with metal sheet and deep drawing, and suitable for manufacturing a metallic can excellent in heat and impact resistances and flavor retention. The film is produced from a mixture consisting of 99-60 wt.% of a copolyester (A) mainly comprising repeating ethylene terephthalate units and having a melting point of 210-245 DEG C and 1-40 wt. % of polybutylene terephthalate or a copolyester (B) mainly comprising repeating butylene terephthalate units and having a melting point of 180-223 DEG C. The film contains a slip additive having a mean particle diameter of 2.5 mu m or less and has a coefficient of plane orientation of 0.08 to 0.16, a thermal shrinkage of 10% or less at 150 DEG C and a density of less than 1.385 g/cm<3>.