The granulated powder process granulated powder the chambering rubber inside chambering process and

摘要

PROBLEM TO BE SOLVED: To provide a manufacturing method of a rubber tube, and a manufacturing method of a rubber roller for OA with the easy moldability of an elongate article in extrusion and excellent uneven thickness accuracy in mold casting by which a long rubber roller or a long rubber roller for OA with a small uneven thickness can be easily obtained.;SOLUTION: The manufacturing method of the rubber tube has an extrusion step for extruding a rubber material into a substantially tubular shape, an inserting step for inserting a mandrel into the hollow portion of extruded rubber 1 with a substantially tubular shape, a loading step for loading the extruded rubber into which the mandrel is inserted into a mold, and a vulcanizing step for vulcanizing the loaded rubber in the mold, and forms the extruded rubber crosssection of the substantially tubular shape in the extrusion step into the uneven shape having a thick wall A and a thin wall B in two orthogonal direction, respectively.;COPYRIGHT: (C)2007,JPO&INPIT