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|1. (WO2018079627) OPTICAL FILM, PRODUCTION METHOD AND MULTILAYER FILM|
|Title:||OPTICAL FILM, PRODUCTION METHOD AND MULTILAYER FILM|
An optical film which comprises a first layer and a highly adhesive layer that is provided on at least one surface of the first layer, and wherein: the first layer is a layer of a crystallized resin that contains an alicyclic structure-containing polymer; and the highly adhesive layer is a layer of a urethane resin. A method for producing an optical film, which comprises: a step (1) wherein a crystalline resin film having a crystallinity of less than 3% is obtained by molding a crystalline resin that contains an alicyclic structure-containing polymer; a step (2) wherein a highly adhesive layer is formed on the surface of the crystalline resin film, thereby obtaining a multilayer product that comprises the crystalline resin film and the highly adhesive layer; and a step (4) wherein the crystalline resin film in the multilayer product is crystallized.