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특허 상세정보

Twin-screw extruder having respective conical nose screw sections

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B29C-047/40   
미국특허분류(USC) 425/204 ; 264/176R ; 264/21121 ; 366/83
출원번호 US-0298863 (1989-01-17)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 53  인용 특허 : 7
초록

A twin screw extruder which significantly reduces extruder wear through provision of separate, complemental, interfitted frustoconical screw and barrel sections adjacent the outlet end of the extruder barrel which create an even, bearing-type support for the rotating screws as material passes through the apparatus. In preferred forms, the screws are intermeshed along the majority of the extruder barrel, but diverge at the region of the final frustoconical screw sections and are received within respective complemental barrel sections; in this fashion the ...

대표
청구항

An extruder, comprising: an elongated barrel presenting an inlet end and an outlet end, a material inlet adjacent said inlet end thereof and a pair of separate, generally tubular, juxtaposed head sections proximal to said outlet end of the barrel and defining respective chambers separated by a central wall, each of said outlet end head sections being of decreasing cross-sectional area along the length thereof, said outlet end head sections serving to divide and receive material passing through said barrel, said elongated barrel having an outer surface th...

이 특허를 인용한 특허 피인용횟수: 53

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