公开(公告)号：US3928518A

公开(公告)日：1975-12-23

申请号：US28941572

申请日：1972-09-15

Applicant: BESCHOFF CHEMICAL CORP

Inventor： GREENBERG WALTER H

IPC: B29C44/42 ,  B29C45/76 ,  B29D27/00 ,  B29F1/00

CPC classification number: B29C44/424 ,  B29C45/7613 ,  Y10S264/83

Abstract: A mold is filled by low pressure injection molding with a mixture of gas and molten plastic, and the control of the quantity of the mixture sent into the mold is responsive to the filling of the mold instead of being responsive to the volume of an accumulating zone in the molding apparatus. At a plurality of positions in the mold, sensors detect the arrival of the hot plastic and as soon as the plastic has arrived at each of the sensors, a signal cuts off the flow of plastic from the large conduits into the mold.

Abstract translation: 用气体和熔融塑料的混合物通过低压注射成型填充模具，并且控制送入模具的混合物的量响应于模具的填充而不是响应于积聚区的体积 在成型装置中。 在模具中的多个位置处，传感器检测热塑料的到达，并且一旦塑料到达每个传感器，信号就会将塑料流从大导管切断到模具中。