GAS BARRIER PACKAGING FILM PRINTED BY AQUEOUS INK

摘要

PROBLEM TO BE SOLVED: To provide a gas barrier packaging film contributing to improvements of operating environment and external environment by executing printing by aqueous ink. SOLUTION: The gas barrier packaging film comprises an easily adhesive polyester film having an easily adhesive coating layer containing dicarboxylic acid component having metal base and/or ammonium base of 5 to 20 mol.% to total dicarboxylic acid component as dicarboxylic acid component and copolymerization polyester copolymerized by 20 to 100 mol.% of diethyleneglycol component to total glycol component and having a second order transition point of 15 to 100 deg.C as glycol component as main components and having a thickness of 0.005 to 0.3μm and formed on at least one side surface of a polyester based film so that aqueous ink printing is executed on the coating layer of the film, and a metal or metal oxide thin film, polyester film layer and heat sealing layer sequentially laminated in this order on a printed surface of the polyester film.