POLYESTER FILM FOR LAMINATION WITH METAL SHEET

摘要

PURPOSE:To provide a polyester film which is excellent in workability indeep drawing and gives a can excellent in impact and heat resistances when used in application wherein it is laminated with a metal sheet and the laminate is fabricated, for example, deep drawn to form a metallic can. CONSTITUTION:The film is made from a copolyester having a melting point of 210-245 deg.C and containing 0.005-3wt.% particles of a metal salt of terephthalic acid or a metal salt containing an alkylene terephthalate component which have a mean particle diameter of 0.05-2.5mum, and it has a refractive index in the direction of film thickness of 1.505 to 1.550 and an intrinsic viscosity of the polymer part of 0.52 to 0.80.