MATTE CO-EXTRUSION LAMINATED POLYESTER FILM, ITS PRODUCTION AND ITS USE

摘要

PROBLEM TO BE SOLVED: To provide a transparent biaxially stretched laminated polyester film having at least one matte outer layer. SOLUTION: In a laminated polyester film consisting of a base layer comprising 80 wt.% or more of thermoplastic polyester and at least one outer layer, at least one outer layer comprises a mixture of components I, II and the component I comprises 80 wt. % or more of thermoplastic polyester and the component II is a polyester copolymer constituted by the polycondensation of four kinds of monomers of isophthalic acid (A), at least one aliphatic dicarboxylic acid (B), a sulfomonomer (C) and alicyclic glycol (D) or derivatives of these monomers having polyester forming capacity.