VAPOR DEPOSITED FOR POLYESTER FILM

摘要

PURPOSE:To improve water resistant adhesive property of a vapor deposited film by providing a coating layer formed of a mixture of a polyurethane resin and an epoxy group containing compound on a polyester film and by providing a vapor deposited layer on the coating layer. CONSTITUTION:The coating layer formed of the mixture containing substantially the polyurethane resin and the epoxy group containing compound at least on one side of the polyester film. Moreover, a vapor deposited layer is provided on the coating layer to constitute the vapor deposited polyester film. An epoxy group containing silane coupling agent is used as the epoxy group containing compound. A water base polyurethane resin or a blocked isocyanate group containing composition is used as the polyurethane resin. Weight ratio (A)/(B) of the mixture of the polyurethane resin (A) and the epoxy group containing compound (B) is 1000/1 to 1/99. As a result, the vapor deposited polyester film excellent in adhesive strength with a vapor deposited film of metal or metal oxide is provided.