|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||425/130 ; 264/32812 ; 264/572 ; 425/572|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 32 인용 특허 : 0|
A device for producing moldings of plastic material having a cavity therein filled with a fluid comprises a mold cavity, an injector for injecting flowable plastic into the mold cavity, an injector for injecting a pressurized fluid into an interior portion of the plastic, and a side cavity connected to the mold to receive flowable plastic melt expelled by the injected pressurized fluid. The side cavity may be randomly lockable and may comprise a closing stuffer which rests flush with respect to the mold cavity interior walls.
An injection molding device having a mold cavity which maintains a constant mold volume throughout a molding process and is defined by mold cavity walls comprised of separable walls, the device comprising: means for injecting pressurized flowable plastic melt into the mold cavity to completely fill the mold cavity with flowable plastic melt; means for injecting pressurized gas into an interior of the plastic melt after both (1) the mold cavity has been completely filled with plastic melt, and (2) a part of the plastic melt has cooled along the walls of t...