| 摘要 |
A thermoplastic film capable of providing a film with excellent optical characteristics by reducing the occurrence of residual strain, and a method for producing the film are provided. The present invention provides the method for producing a thermoplastic film, comprising the steps of: extruding a molten thermoplastic resin from a die in a sheet shape; and forming a film by cooling and solidifying the sheet-shaped thermoplastic resin while sandwiching the sheet-shaped thermoplastic resin between a metal cooling roll and an endless metal belt capable of running with a stretched state, which have an arithmetic average surface roughness (Ra) of a roll surface and a belt surface of 100 nm or less as a surface property.
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