| abstract |
(57) [Summary] [Object] To provide a method for stably producing a laminated film for a long period of time, which is excellent in releasability and easy contact of a silicone release layer forming agent. [Structure] At least one side of the polyester film, A method for producing a laminated film, which comprises applying a coating agent containing an silane coupling agent having an oxirane group and having an average degree of polymerization of 2 to 5, and heat-treating it to form a crosslinked primer. |