| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing a resin sheet which can give a desired cross-sectional shape when producing a resin sheet with a wide thickness distribution in the width direction upon molding and which is particularly suitably used for a light guide plate positioned on the backside of various display devices or various optical devices. SOLUTION: A sheet-shaped resin material 14 extruded from a die 12 and a backup sheet 20 fed to one side of the resin material are pressed by an emboss roller and a nip roller positioned against the emboss roller in such a manner that the resin material is on the side of the emboss roller 16 and the backup sheet is on the side of the nip roller 18, thereby transferring projections and depressions on the surface of the emboss roller to the resin material, and the laminate of the resin material and the backup sheet after transfer is wound on a releasing roller 24 positioned against the emboss roller to be released from the emboss roller. COPYRIGHT: (C)2007,JPO&INPIT |
