| 摘要 |
<p>PURPOSE: A film laminate containing the biaxial oriented polyester film, its use and its preparation method are provided, which film laminate has high oxygen barrier and can be used for packing the food or any other product, and its manufacturing cost is low. CONSTITUTION: The film laminate comprises a biaxial oriented polyester film and other film laminated on the polyester film, wherein the polyester film comprises a base layer made of 80 or more wt% of thermoplastic polyesters, one or more coating layers, and a metal or ceramic layer on the coating layer, and the Tg2 of the polyester film is larger than that of the base layer and smaller than that of the coating layer. The coating layer comprises polymers, copolymers, or a mixture of 40 or more wt% of ethylene 2,6-naphthalate unit, 40 or more wt% of ethylene terephthalate unit, and if necessary, polymers containing 60 or less wt% of other aliphatic, cyclic or aromatic diols and/or dicarboxylic acids.</p> |
