| 摘要 |
PROBLEM TO BE SOLVED: To provide a composite film excellent in solvent resistance, heat resistance, moldability and punch-cutting properties. SOLUTION: This composite film is a deep drawing composite film consisting of a first layer composed of a polybutylene terephthalate resin, a second layer composed of an amorphous polyethylene terephthalate resin, a third layer composed of an adhesive resin, a fourth layer composed of a saponified ethylene/ vinyl acetate copolymer with ethylene content of 30-60% and a saponification value of 95mol% or more, a fifth layer composed of an adhesive resin and a sixth layer composed of a polyolefinic seal material and the thickness of the first layer is 1-10μm and the thickness of the second layer is 10-50μm.
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