CYCLOOLEFIN RESIN FILM, ITS MANUFACTURING METHOD, AND POLARIZATION PLATE, OPTICAL COMPENSATION FILM, ANTIREFLECTION FILM AND LIQUID CRYSTAL DISPLAY DEVICE USING CYCLOOLEFIN RESIN FILM

摘要

PPROBLEM TO BE SOLVED: To provide a cycloolefin resin film reduced in the number of crosslinked gels and suitable for an optical film by a melt extrusion method. PSOLUTION: In the manufacturing method of the cycloolefin resin film by a melt extrusion method for heating and melting a cycloolefin resin to extrude the molten cycloolefin resin, the average leading end radius R of curvature and center angle of at least one of the corner parts of a cycloolefin resin pellet being a raw material are 200 mR2,000 m and 85135. PCOPYRIGHT: (C)2009,JPO&INPIT