-
公开(公告)号：US3773873A
公开(公告)日：1973-11-20
申请号：US3773873D
申请日：1970-06-22
申请人： ALLIED CHEM
CPC分类号： B29C45/2806 , B29C44/105 , Y10S264/05 , Y10S264/14 , Y10S264/17 , Y10S264/83
摘要： THIS DISCLOSURE IS DIRECTED TO A METHOD FOR INJECTION MOLDING. PREMATURE FOAMING AND SETTING OF FOAMABLE MOLDING MATERIALS IS PREVENTED BY ACCOMPLISHING THE INJECTION OF THE FOAMABLE MOLDING MATERIAL INTO A MOLD CAVITY HAVING A GASEOUS SUBSTANCE THEREIN AT A PRESSURE IN EXCESS OF THAT REQUIRED TO PREVENT FOAMING OF THE MOLDING MATERIAL. PLANNED WASTAGE OF MOLDING MATERIAL IS MINIMIZED BY PROVIDING PISTIONS IN THE RUNNERS WHICH CARRY THE MOLDING MATERIALS TO THE MOLD, WHICH PISTONS FORCE EXCESS MOLDING MATERIAL AWAY FROM THE MOLD SO AS TO RECOMPRESS AND RECOVER THE MATERIAL, THEREBY TO BE USED IN THE NEXT SUBSEQUENT MOLDING CYCLE.
-
公开(公告)号：US3719441A
公开(公告)日：1973-03-06
申请号：US3719441D
申请日：1970-06-22
申请人： ALLIED CHEM
CPC分类号： B29C44/105 , B29C45/26 , B29C45/46
摘要： This disclosure is directed to a method of for injection molding. Premature foaming and setting of foamable molding materials is prevented by accomplishing the injection of the molding material into a preheated mold cavity having a gaseous substance therein at a pressure in excess of that required to prevent foaming of the molding material. Planned wastage of molding material is minimized by providing pistons in the runners which carry the molding materials to the mold, which pistons force excess molding material away from the mold so as to recompress and recover the material, thereby to be used in the next subsequent molding cycle.
摘要翻译： 本公开涉及一种注塑成型方法。 通过在超过防止模制材料发泡所需的压力的压力下实现将模塑材料注入到其中具有气态物质的预热模腔中，从而防止了发泡模塑材料的过早发泡和凝固。 通过在将模制材料携带到模具中的活塞中提供活塞来减少成型材料的浪费，活塞将多余的模制材料压在模具上，以便重新压缩和回收材料，从而被用于随后的后续成型 周期。
-
搜索结果
2 条记录 (耗时 0.009 秒)
