| 摘要 |
PROBLEM TO BE SOLVED: To provide a layered film with excellent weatherability, transparency and blocking resistance by laminating a layer consisting of benzotriazole-based monomer copolymerized acrylic resin on the single surface of thermoplastic resin film whose average roughness in the center line is specified. SOLUTION: A layer consisting of benzotriazole-based monomer copolymerized acrylic resin is laminated on one surface of thermoplastic resin film whose average roughness in the center line is 0.01-0.3μm. As one example, with bioxially oriented polyethylene terephthalate film (150μm in thickness) taken as base element film, coating liquid is applied to its one surface so that thickness after the coating may be 5μm, and it is dried at 120 deg.C for two minutes to obtain a layered film. The coating liquid to be used is a butyl acetate solution of solid component 30% of 2-(2,-hydroxy 5,-methacryloxyetylphenyl)-2H- benzotriazole/methyl methacrylate (copolymer of 30/70 weight %).
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