Laminated polyester film

摘要

A laminated polyester film comprising a polyester base film and a layer comprising a polyester graft copolymer and which is formed at least on one surface of said polyester base film, said polyester graft copolymer comprising a hydrophobic copolymerizable polyester resin and an acid anhydride having at least one double bond grafted to said polyester resin. The laminated polyester film of the present invention exhibits superior adhesive property, water resistance and resistance to blocking, particularly excellent adhesive property, by applying a specific polyester graft copolymer to a polyester base film.