发明名称 PROCESS FOR PRODUCING POLISHING PAD
摘要 <p>A process for producing continuous polishing pads which is reduced in the number of production steps and has excellent productivity. Also provided is a process for producing continuous layered polishing pads which is reduced in the number of production steps, has excellent productivity, and prevents the pads from suffering polishing layer/cushioning layer separation. The process for producing continuous polishing pads comprises: a step in which a urethane composition having bubbles dispersed therein is prepared by mechanical foaming; a step in which a face material is delivered and the urethane composition having dispersed bubbles is continuously ejected onto the material; a step in which another face material is superposed on the urethane composition having dispersed bubbles; a step in which the urethane composition having dispersed bubbles is cured while regulating the thickness so as to be even to thereby form a polishing layer made of a polyurethane foam; a step in which the polishing layer is cut into two slices in a direction parallel with the plane to thereby simultaneously produce two continuous polishing layers each comprising of a polishing layer and a face material; and a step in which the resultant continuous polishing layers are cut.</p>
申请公布号 WO2007123168(A1) 申请公布日期 2007.11.01
申请号 WO2007JP58494 申请日期 2007.04.19
申请人 TOYO TIRE & RUBBER CO., LTD.;FUKUDA, TAKESHI;WATANABE, TSUGUO;HIROSE, JUNJI;NAKAMURA, KENJI;DOURA, MASATO 发明人 FUKUDA, TAKESHI;WATANABE, TSUGUO;HIROSE, JUNJI;NAKAMURA, KENJI;DOURA, MASATO
分类号 B29C39/18;B24B37/20;B29C39/16;B29K75/00;B29K105/04;B29L9/00;H01L21/304 主分类号 B29C39/18
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