|국가/구분||United States(US) Patent 등록|
|국제특허분류(IPC7판)||B29C-017/07 B29C-017/14 B29D-027/00|
|미국특허분류(USC)||264/53 ; 264/54 ; 264/98 ; 264/150|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 11 인용 특허 : 0|
The method for blow molding foam walled plastic using a quadrisectional mold. A parison of foamed plastic may be blow molded to assume the contour of the closed mold, after which the molded shape is severed into two portions and ejected. Desirably, cellular plastic is blow molded to form hot drink cups.
A method for blow molding foamed walled plastic open-mouthed containers which comprises extruding foamed plastic through an annular orifice to form a foamed parison of tubular configuration, having foamed walls pinching a lower section of the tubular configuration within a lower portion of a sectional mold, pinching an upper portion of the tubular configuration within an upper portion of a sectional mold, introducing a gas through a hollow needle inserted at a point through a center portion of said mold and parison therein and blowing the tubular configu...