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특허 상세정보

Method and apparatus for injection molding foamed plastic articles using a pre-pressurized mold having fixed core member

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B29D-027/00   
미국특허분류(USC) 264/455 ; 264/403 ; 264/51 ; 264/328
출원번호 US-0925959 (1978-07-18)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 32  인용 특허 : 2
초록

A method of molding articles of plastic having an expanded plastic cellular core using a closable and sealable mold having a sealed mold cavity and including at least one mold core extending into the cavity, comprises, directing the plastic melt material containing a foaming agent into the mold cavity under pressure so as to form a flow front of the melt which progresses through the cavity and which spreads out in all directions and flows around the mold core and tends to form a pocket of gas in the vicinity of the mold core, and venting the cavity adjac...

대표
청구항

A method of injection molding articles of foamable plastic material having a smooth surface and an expanded cellular core, using a closable mold having a sealable mold cavity with a gas therein and at least one fixed mold core extending into the mold cavity, with at least one intermediate shadow space of the mold cavity adjacent the mold core, comprising: injecting a melt of the plastic material containing a foaming agent into the cavity against the counter-pressure of the gas which is provided to prevent expansion of the melt during the mold filling ope...

이 특허를 인용한 특허 피인용횟수: 32

  1. Stoll Kurt (Lenzhalde 72 D-7300 Esslingen DEX) Glttli Hans-Heinrich (Seestrasse 252 Ch-8700 Ksnacht CHX). Adapter block and a mold for producing such blocks by foam molding. USP1985054520061.
  2. Stoll Kurt (Lenzhalde 72 7300 Esslingen DEX) Glttli Hans-Heinrich (Seestrasse 252 CH-8700 Ksnacht CHX). Adapter formed from a composite foamed adapter block having fluid channels and a process for its manufacture. USP1985034507345.
  3. Ito,Takayuki; Takahashi,Katsumi; Asaya,Toshihiko. Apparatus and method for molding articles. USP2006016988878.
  4. Sperry, Charles R .; Piucci, Jr., Vincent A.; Schamel, Michael J.. Foam cushion molding system and method. USP2010017641459.
  5. Yamaki,Hiroshi; Tanaka,Yuji. Foam injection molding method. USP2006077077987.
  6. Guergov Milko G.. Gas assisted injection molding with controlled internal melt pressure. USP2000026019918.
  7. Guergov, Milko G.. Gas assisted injection molding with controlled internal melt pressure. USP2003116645587.
  8. McClelland, Alan Nigel; Padsalgikar, Ajay Devidas. Gas assisted injection moulding. USP2004116821476.
  9. Guergov Milko G.. Injection control system. USP1998025716561.
  10. Tokunou, Ryuichi. Injection molding machine and injection molding method. USP2016059346204.
  11. Yabusaki,Kenichiro; Ishikawa,Masatoshi. LED inserting holder integrated type base board and mold therefor. USP2007037186363.
  12. Guergov Milko G. (615 Washington ; #5 Monroe MI 48161). Method and apparatus for injecting a molten material into a mold cavity. USP1997095662841.
  13. Nieboer Keith A. (Holland MI) Tucker Herbert D. (Rochester MI). Method for forming a molded assembly with an embedded part. USP1989084861540.
  14. Yamaki Hiroshi,JPX ; Matsuura Yoshimasa,JPX ; Kataoka Hiroshi,JPX. Method for injection molding of thermoplastic resins. USP2000116146577.
  15. Jennings Roy E. ; Shiffler John W.. Method for manufacturing a chair having separate moldable parts. USP1999115985188.
  16. Richters Franciscus Egbertus,NLX ; During Johannes,NLX ; Eidhof Andreas Bernardus,NLX ; Jagers Christiaan Antonius,NLX. Method for manufacturing a plastic board. USP2001026193916.
  17. Branger Robert Michael ; Fortier David N.. Method of molding cross-linked foamed compositions. USP2000086103154.
  18. Matsuura Ichiro (Kanagawa JPX) Ishimaru Kiichiro (Kanagawa JPX) Mizuno Hisayoshi (Kanagawa JPX) Omata Youichi (Kanagawa JPX) Soutome Fumio (Kanagawa JPX). Method of molding skin-covered foamed plastic article. USP1990054923653.
  19. Akai Mikio (Ayase JPX) Mori Masami (Ayase JPX). Method of producing skin-covered foamed plastic article. USP1990094959184.
  20. Yanagishita Norio (Ayase JPX). Method of producing skin-covered foamed plastic article. USP1990124976414.
  21. King, Vincent W.; D'Sa, Joseph M.; Fehr, Robert T.; Servatius, James A.. Microreplication tool with gas release features. USP2004116824378.
  22. Bordener Robert. Mold assembly for creating a countertop product displaying a built-up edge and method for producing the same. USP1999055906875.
  23. Stoll Kurt (Lenzhalde 72 7300 Esslingen DEX) Glttli Hans H. (Seestr. 252 CH-Ksnacht CHX). Mold construction comprising a plurality of mold portions. USP1990074941642.
  24. Reichental Abraham N. ; Shafir Alexander ; Bertram George T. ; Corliss James M.. On-demand production of foam cushions with defined three-dimensional geometry. USP1998075776510.
  25. Hendry, James; Homann, Gregory A.; Turczynski, David. Open mold molding. USP2005056890478.
  26. Homann, Gregory A.; Turczynski, David. Plastic injection molded articles with hollow rib members. USP2005056890477.
  27. Homann, Gregory A.; Hendry, James; Turczynski, David. Plastic injection molding with moveable insert members. USP2005096939504.
  28. Homann, Gregory A.. Plastic injection molding with moveable mold members forming speaker grill. USP2005056899843.
  29. Stoll Kurt (Lenzhalde 72 7300 Esslingen DEX) Glttli Hans-Heinrich (Seestr. 252 CH-8700 Ksnacht CHX). Process and apparatus for producing adapter blocks for systems working with fluid under pressure. USP1985074526827.
  30. Baumrucker Ervin J. (Highlands NC). Process and mold for molding foamed plastic articles. USP1984104479914.
  31. Shibuya Takehiro (Yokohama JPX) Nagahara Takashi (Yokohama JPX) Imai Susumu (Zama JPX). Process for molding of a foamed article. USP1990084952365.
  32. Scheurer Robert S. (Wichita Falls TX) Hancock Kendal (Wichita Falls TX). Reaction injection molded recreation boards with spaced rectangular reinforcing rods. USP1990014897063.