POLY-ESTER FILM COMPRISING PRIMER LAYER FOR LAMINATING AND PREPARATION METHOD THEREOF

摘要

PURPOSE: A polyester film comprising primer layer for laminating and a preparation method thereof are provided, which has an improved adhesion power and which is capable of preventing a de-lamination under freezing point. CONSTITUTION: A biaxial orientation polyester film for laminating is characterized by coating a composition comprising water soluble titanium chelate compound of formula 1 in 0.1-10.0 wt.% and water of resident content on a surface or on both sides for forming a primer layer, R is C1-C8 alkyl group, X is chelating material. A preparation method thereof comprises the following steps: (i) coating a composition comprising water soluble titanium chelate compound in 0.1-10.0 wt.% and comprising water of resident content on a side or both sides of non crystalline poly-ester sheet; (ii) performing a thermosetting of the non-crystalline sheet coated with the composition.