| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a biaxially stretched thermoplastic resin film having an adhesion improvement layer between a laminated thermoplastic resin film and an optically functional layer even when a high output ultraviolet ray irradiation device is used for manufacture of an optical film having the optically functional layer on each of both surfaces. <P>SOLUTION: The laminated thermoplastic resin film has the thermoplastic resin film and the adhesion improvement layer mounted on each of both surfaces and composed of a copolymerized polyester-based resin and a polyurethane-based resin as major components wherein each adhesion improvement layer contains ≥0.05 mass% to <0.5 mass% of a high boiling point solvent, and the laminated thermoplastic resin film has ≥70% to <85% of a transmittance of an ultraviolet ray of a wavelength of 365 nm. <P>COPYRIGHT: (C)2010,JPO&INPIT |
