| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a composite film for food packaging which is excellent in sealability, thermal lamination suitability with a foam polystyrene sheet and printability, and has high gas barrier properties.SOLUTION: A composite film is formed by laminating at least three layers of a layer which is formed of a polystyrene thermoplastic elastomer having a Vicat softening point of 90°C or lower, and has a thickness of 10-30μm, a gas barrier resin layer, and a heat seal layer by a co-extrusion method. The total thickness of the composite film is 25-80μm.</p> |
