MANUFACTURING METHOD AND APPARATUS FOR UNEVEN THICKNESS RESIN SHEET

摘要

A manufacturing method for uneven thickness resin sheet with unevenness in sheet thickness in a width direction comprises a molding and cooling process (14) in which the extruded resin sheet is nipped between the molding roller (46) and a nip roller (48) and unevenly molded while being cooled and solidified. In the molding and cooling process (14), a heating device (47) is provided for partially heating only a surface part of the molding roller (46) corresponding to a thin part (A2). Therefore, during a period from when a resin sheet extruded from a die is nipped till when the sheet is peeled off from a molding roller, falling-off of a thin part of the resin sheet from the molding roller can be effectively restrained, and a thick part does not become difficult to be peeled off when the resin sheet is peeled off from the molding roller.