| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for efficiently manufacturing an expanded rubber roller of highly stabilized quality by continuously performing processes up to expansion and vulcanization of a rubber composition extruded by an extruder under space saving and power saving control. <P>SOLUTION: In this method, a raw material rubber composition is extruded in a tubular form, then vulcanized and expanded after cutting it to a specified length, and a core metal is forced into the obtained vulcanized rubber tube to obtain the expanded rubber roller. In this case, the cut unvulcanized rubber tube is disposed on a conveyance tray with an arc-shaped bottom which satisfies formula: R<SP>1</SP>≤R<SP>2</SP>≤2R<SP>1</SP>(R<SP>1</SP>represents a radius of the vulcanized rubber tube and R<SP>2</SP>represents a radius of the bottom of the conveyance tray) and thermally vulcanized and expanded. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
