|국가/구분||United States(US) Patent 등록|
|국제특허분류(IPC7판)||B29D-022/00 B29C-049/06 B29C-045/00|
|미국특허분류(USC)||264/572 ; 425/130 ; 425/135 ; 264/040.1 ; 264/040.5|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 10 인용 특허 : 8|
A method and an apparatus are disclosed for producing plastic objects with solid regions and hollow regions. The method has the following steps: a) blocking off a part of the cavity (2) of a molding tool (1), so that little or no plastic melt can reach the blocked-off region (8); b) injecting plastic melt into the unblocked region (9) of the cavity (2) of the molding tool (1); c) releasing the blockage, so that plastic melt can reach the previously blocked-off region (8) of the cavity (2); d) injecting a pressurized gas into the melt by means of at least...
[ What is claimed is:] [1.] A method for producing plastic molded parts with solid regions and hollow spaces, comprising:blocking off a portion of a cavity of a molding tool;injecting plastic melt into an unblocked portion, but not a blocked-off portion, of the cavity of the molding tool along a melt flow path, which extends from a plasticizing unit through a plastic injection nozzle into the molding tool;injecting the plastic melt until the unblocked portion of the cavity is filled with plastic melt;unblocking the cavity enabling the plastic melt to rea...