| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an apparatus and a method for manufacturing an elastic roller that prevents the variation of a roller outer diameter due to the variation of a discharge amount of an extruder caused by pressure variation generated at a discharge part. <P>SOLUTION: The elastic roller is manufactured by the apparatus using a cross head in which a portion of an annular flow path wall surface is subjected to nitriding treatment while the other region is subjected to surface treatment different from the nitriding treatment, and thereby the adhesive property of raw materials is enhanced as compared to the other region forming the wall surface. <P>COPYRIGHT: (C)2013,JPO&INPIT |
