IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0740099
(1996-10-24)
|
발명자
/ 주소 |
- Martin Blake E.
- Palmer Richard D.
- Wood Robert P.
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
66 인용 특허 :
12 |
초록
▼
In an apparatus for extruding plastic into a length of parison in the form of a vertically oriented hollow tube, molding a container from the parison and for filling the container with liquid product, the apparatus having a extruder, with a parison head, for forming the parison, a hot knife for cutt
In an apparatus for extruding plastic into a length of parison in the form of a vertically oriented hollow tube, molding a container from the parison and for filling the container with liquid product, the apparatus having a extruder, with a parison head, for forming the parison, a hot knife for cutting the parison to a selected length with concomitant release of plastic particulates, gripping apparatus for maintaining an opening at a top of the cut parison, a sealer for sealing a bottom of the cut parison, vacuum apparatus for molding the container with a temporary top opening, an extendable and retractable nozzle for filling the molded container through the temporary top opening with the liquid product and a sealer for sealing the filled container, the improvement including an outer shroud for surrounding the extruder, including the parison head, with H.E.P.A. filtered air, an inner shroud, in communication with a vacuum exhaust and disposed around the parison head, for preventing the particulates from entering the parison upon cutting thereof by the hot knife, and a third shroud, surrounding the nozzle, for directing H.E.P.A. filtered air into the molded container before and during liquid filling thereof.
대표청구항
▼
[ What is claimed is:] [1.] In an apparatus for extruding plastic into a length of parison in the form of a vertically oriented hollow tube, molding a container from the parison and for filling the container with liquid product, said apparatus having extruder means, with a parison head, for forming
[ What is claimed is:] [1.] In an apparatus for extruding plastic into a length of parison in the form of a vertically oriented hollow tube, molding a container from the parison and for filling the container with liquid product, said apparatus having extruder means, with a parison head, for forming the parison, hot knife cutting means for cutting the parison to a selected length with concomitant release of plastic particulates, gripping means for maintaining an opening at a top of the cut parison, sealing means for sealing a bottom of the cut parison, vacuum means for molding the container with a temporary top opening, extendable and retractable nozzle means for filling the molded container through the temporary top opening with the liquid product and sealing means sealing the filled container, the improvement comprising:outer shroud means for surrounding the extruder means, including the parison head, with high efficiency particulate air filtered air;inner shroud means, in communication with a vacuum exhaust and disposed around said parison head, for preventing the particulates from entering the parison upon cutting thereof by the hot knife means; andthird shroud means, surrounding the nozzle means, for directing high efficiency particulate air filtered air into the molded container before and during liquid filling thereof.
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