RESIN FILM, AND FILM MIRROR OBTAINED THEREFROM AND USED FOR SOLAR THERMAL POWER GENERATION

摘要

PROBLEM TO BE SOLVED: To provide a resin film which is used in a film mirror for solar thermal power generation, has excellent light resistance and suppresses generation of white smoke when formed by molding a resin.SOLUTION: The resin film to be used in the film mirror for solar thermal power generation comprises a resin composition containing: a thermoplastic resin; an ultraviolet absorbent (I) having absorption maximum in the wavelength of 320-400 nm; and another ultraviolet absorbent (II) having absorption maximum in the wavelength of 200-320 nm. A weight ratio of the ultraviolet absorbent (I) and that of the ultraviolet absorbent (II) in the resin composition are smaller than 1 wt.% respectively on the basis of 100 wt.% of the thermoplastic resin.