公开(公告)号：US4048275A

公开(公告)日：1977-09-13

申请号：US627409

申请日：1975-10-30

申请人： Teruyoshi Usamoto ,  Kenji Miyawaki ,  Toshiaki Shiota ,  Hideki Takeuchi ,  Yoshio Tadokoro

发明人： Teruyoshi Usamoto ,  Kenji Miyawaki ,  Toshiaki Shiota ,  Hideki Takeuchi ,  Yoshio Tadokoro

IPC分类号： C08J9/06 ,  B29C37/00 ,  B29C43/00 ,  B29C44/42 ,  B29C45/00 ,  B29C45/23 ,  B29C45/62 ,  B29D27/00 ,  B29F1/08

CPC分类号： B29C44/42 ,  Y10S264/05 ,  Y10S264/18 ,  Y10S264/83

摘要： An injection molding process for forming cross-linked, foamed moldings of an ethylenic polymer by passing a molding composition comprising an ethylenic polymer/cross-linking agent/foaming agent blend through the cylinder of an injection molding machine without substantially decomposing the cross-linking agent and the foaming agent, introducing the molding composition into a molding composition holding chamber provided at the exit end of the cylinder of the injection molding machine to decompose the cross-linking agent and the foaming agent therein, and injecting the molding composition into a mold.The invention also provides apparatus for carrying out the process comprising an injection molding cylinder for conveying and plasticizing the molding composition and a molding composition holding chamber provided at the exit end of the cylinder.

摘要翻译： 一种用于通过使包含乙烯性聚合物/交联剂/发泡剂混合物的模塑组合物通过注射成型机的圆筒通过而形成交联的乙烯类聚合物的发泡模制品的注射成型方法，而基本上不分解交联剂 和发泡剂，将成型组合物引入设置在注射成型机的圆筒的出口端的成型组合物保持室中，以将交联剂和发泡剂分解，并将模塑组合物注入模具中。