|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||264/512 ; 264/549 ; 264/550 ; 425/3871|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 18 인용 특허 : 0|
In the deep-drawn molding of a plastic container, a molten plastic sheet is positioned between a plug and a mold. The molten sheet is supported on an upper mold surface portion having heat insulating property and slipperiness, and while a positive pressure is created between the mold and the molten sheet, the molten sheet is molded by moving the plug and the mold relative to each other in a closing direction. By drawing the molten sheet into the mold while allowing it to slide over the above upper mold surface portion, the amount of the molten plastic sh...
A process for producing a deep-drawn plastic container by plug assist vacuum and/or pressure forming of a plastic sheet in a molten state, which comprises arranging a plug and, in a spaced-apart relationship an upper mold and a mold having a cavity inside and an opening at the upper end and having an annular member with heat insulating property and slipperiness which is positioned above, and diametrically outwardly of, the opening of the mold; wherein the angle (q20 to 70 degrees; feeding a plastic sheet in a molten state supported by a fixing member bet...