公开(公告)号：US5972276A

公开(公告)日：1999-10-26

申请号：US943183

申请日：1997-10-03

申请人： Kazuharu Yasuda ,  Hideki Naruse ,  Susumu Imai

发明人： Kazuharu Yasuda ,  Hideki Naruse ,  Susumu Imai

IPC分类号： B29C45/17 ,  B29C45/00

CPC分类号： B29C45/174 ,  Y10S425/812

摘要： Disclosed is a method for the injection molding of a resin to produce a shaped resin article having a thick portion biasedly, wherein an excess filling of the cavity of a mold is effected to form a molten resin mass having opposite, first and second surfaces respectively facing opposite, first and second inner walls of the mold cavity, the mold having a specific structure in which a gas-release passage is formed in association with the mold cavity and with a mating surface of the mold, which gas-release passage has an inner opening in an inner wall surface of the mold cavity and communicates with the outside of the mold, and a pressurized gas is introduced into the mold cavity on a side of the first surface of the molten resin mass, thereby forming a closed space which is filled with the pressurized gas and separated from the gas-release passage through the molten resin mass, so that the pressurized gas filled in the closed space urges the second surface of the molten resin mass to be pressed against the second inner wall of the mold cavity.

摘要翻译： 公开了一种树脂的注射成型方法，以制造具有偏压的厚部分的成型树脂制品，其中进行模具的空腔的过度填充以形成熔融树脂块，其具有相对的第一和第二表面，分别面对 模具的相对的第一和第二内壁，模具具有特定的结构，其中与模腔相关联地形成气体释放通道，并且与模具的配合表面形成气体释放通道，该气体释放通道具有内部 在模腔的内壁面开口并与模具的外部连通，并且在熔融树脂块的第一表面侧的模腔中引入加压气体，从而形成填充的封闭空间 与加压气体分离并通过熔融树脂块从气体释放通道分离，使得填充在封闭空间中的加压气体促使熔融树脂块的第二表面为 压靠在模腔的第二内壁上。