| 摘要 |
PROBLEM TO BE SOLVED: To provide a thermoplastic resin film excellent in lactic acid resistance. SOLUTION: A surface layer made of a polystyrene resin is laminated on at least one side of a substrate layer made of a thermoplastic resin. The thickness of the whole laminated film is 20-500μm, the thickness of the substrate layer is at least 0.5 times of the thickness of the whole, and the thickness of the surface layer is at least 1μm. A methacrylic resin is used preferably as the thermoplastic resin, and especially a methacrylic resin incorporated with acrylic rubber particles is preferable. COPYRIGHT: (C)2008,JPO&INPIT
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