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특허 상세정보

Gas injected compression molding

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B29D-022/00   
미국특허분류(USC) 264/572
출원번호 US-0821900 (2001-03-30)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Dinnin & Dunn, P.C.
인용정보 피인용 횟수 : 4  인용 특허 : 13
초록

A method for the compression molding of a plastic article is provided. The method includes the steps of loading plastic material, that is preferably unheated, into a two piece molding chamber having at least one heating element, closing the molding chamber, and heating the plastic element. The method further includes the step of injecting fluid, for example air, into the plastic material to create at least one cavity within the plastic material. The air may be injected directly into the plastic material, or it may be injected along an upper surface of th...

대표
청구항

A method for the compression molding of a plastic article is provided. The method includes the steps of loading plastic material, that is preferably unheated, into a two piece molding chamber having at least one heating element, closing the molding chamber, and heating the plastic element. The method further includes the step of injecting fluid, for example air, into the plastic material to create at least one cavity within the plastic material. The air may be injected directly into the plastic material, or it may be injected along an upper surface of th...

이 특허에 인용된 특허 (13)

  1. Sasaki Yosuke (Zama JPX) Harashima Noboru (Fujisawa JPX) Mimura Kazuhiro (Hiratsuka JPX). Apparatus for and method of controlling temperature in plastic compression molding machine. USP1992045108672.
  2. Bauer Heinz,DEX ; Bernhardt Achim Roland,DEX. Compression apparatus. USP1998075780076.
  3. Tanada Akinori,JPX. Extended shaft and a mold of the extended shaft and an apparatus for molding the extended shaft and a method for molding the extended shaft. USP2000126159415.
  4. Blankenburg Karl. Gas assist injection molding apparatus and method with multiple temperature gas supply. USP1998035728325.
  5. Devanathan Thirumalai N. C. ; Ramani Karthik. Inert gas heated compression molding process and apparatus. USP1998045741455.
  6. Ingram Keith W. (Holland OH). Method and apparatus for compression molding closure liners. USP1997085658518.
  7. Hendry James W. (Brooksville FL). Method for fluid compression of injection molded plastic material. USP1994095344596.
  8. Kamiyama Tadamasa (Takatsuki JPX). Method for manufacturing synthetic resin containers. USP1996075534216.
  9. Abrams Fredric L. (Dayton OH) Freund Robert F. (Dayton OH). Method for molding parts. USP1997015591384.
  10. Akahori Kiyokazu,JPX ; Iwamoto Kazunari,JPX. Method of molding aromatic polyimide resin. USP1998025718855.
  11. Kaneishi Akimasa,JPX ; Kiboshi Sinji,JPX. Molding method for producing molded article having a hollow portion. USP1998015705107.
  12. Abrams Fredric L. (Dayton OH) Freund Robert F. (Waynesville OH). Plasticator and system for molding parts. USP1997065637329.
  13. Hendry James W.. System for injection molding of plastic article utilizing a variable volume spill cavity. USP1998035728410.