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특허 상세정보

Method for producing foamed moldings from synthetic resin materials

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B29D-027/00   
미국특허분류(USC) 264/45.5 ; 264/DIG14 ; 264/DIG83 ; 264/51 ; 264/328.12 ; 264/529
출원번호 US-0814127 (1977-07-08)
우선권정보 JP-0001245 (1973-12-28)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Cushman, Darby & Cushman
인용정보 피인용 횟수 : 61  인용 특허 : 1
초록

Foamable synthetic resin materials are plastified and injected into a mold cavity in an amount less than the volume of mold cavity and a body of gas under pressure is charged in the mold cavity in such manner that it is enclosed by said resin materials. When the injected resin materials sets at least at its outer surface layer, the gas is discharged out of the mold cavity so that the foamable resin materials can be expanded in the hollow portion formed by the pressure of the charged gas. Said foamable resin materials may be surrounded by unfoamable resin...

대표청구항이 없습니다

이 특허를 인용한 특허 피인용횟수: 61

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