Patent ID: 9498912
Filing Date: 2016-11-22
CPC Classification: B29C,B32B

Claim Text:
1. An extruded resin film, formed by an extrusion forming method, comprising at least one thermoplastic resin, the extruded resin film having a thickness of from 0.03 to 0.5 mm and a shrinkage ratio in the extrusion direction, S1 (%), which satisfies the following formula (1) and has a shrinkage ratio in the cross-extrusion direction, S2 (%), of from 0 to 5% when being left at rest for 0.5 hours under a hot atmosphere at the temperature of 20° C. above heat distortion temperature (Th) of the highest heat distortion temperature thermoplastic resin included in the extruded resin film: wherein X is thickness of the extruded resin film (mm), and wherein the extruded resin film is consisting of a single layer film of aromatic polycarbonate resin, or a laminated film of an aromatic polycarbonate resin layer and a methyl methacrylate-based resin layer.