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특허 상세정보

Process for molding of plastic structural web articles

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B29C-017/04    B29D-027/00   
미국특허분류(USC) 264/500 ; 264/451 ; 264/466 ; 264/570
출원번호 US-0936056 (1978-08-23)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 33  인용 특허 : 1
초록

Process is disclosed wherein plastic material is passed into a mold cavity; pressurizing fluid is injected into the plastic material under controlled pressure and at a controlled rate to cause the plastic material to flow out and assume the contour of the cavity, the gas pressure being maintained until the plastic material is self-supporting. The resulting article has an outer skin and a generally hollow center containing skin-connecting structural “webs”.

대표
청구항

A process for the product of a molded plastic structural web article comprising: introducing a volume less than the volume of the mold of a molten plastic material, having a high shear viscosity and elasticity, into a mold cavity having a contour which provides the desired flow length-to-thickness ratio; injecting low viscosity pressurizing fluid into said molten plastic material in said mold cavity through at least one injection opening and at a fluid flow rate and fluid pressure to cause (i) said pressurizing fluid to penetrate into said molten plastic...

이 특허를 인용한 특허 피인용횟수: 33

  1. Donnell ; Jr. Emerson B. (P.O. Box 386 Basking Ridge NJ 07920-0386). Adjustable injection molding apparatus for creating of products within a mold from fluid plastic material. USP1997025599568.
  2. Hendry, James W.. Apparatus for making a twin-wall, internally corrugated plastic structural part with a smooth non-cellular skin. USP1985114555225.
  3. Daniels Vernon Arthur. Gas assisted injection molding system. USP1999126000925.
  4. Oda Masamitsu (Hiroshima JPX). In-mold coating apparatus. USP1987034647274.
  5. Oda Masamitsu (Hiroshima JPX). In-mold coating method and apparatus. USP1988114783298.
  6. Horikoshi Maki,JPX ; Tanaka Yuji,JPX ; Nishiura Keiji,JPX. Injection-molded hollow article, hollow injection molding method and metal mold therefor. USP1998125849377.
  7. Hunerberg Edward C. (Tecumseh MI). Method and apparatus for injection molding plastic articles having solid exterior surfaces and porous interior cores. USP1984094473516.
  8. Sayer Matthew E. (Tamworth GB2). Method and apparatus for injection moulding. USP1990054923667.
  9. Kauer Hubert (Warren MI). Method and system for making a hollow-shaped body from molten resin by injection molding. USP1989054830812.
  10. Monnet Bernard (Bellignat FRX). Method for injection moulding coated parts from plastics material. USP1985024497763.
  11. Hendry James W. (Spring Hill FL). Method for the injection molding of plastic articles using fluid pressure. USP1989084855094.
  12. Splain, William D.; Peota, Robert D.; Hennen, Alexandre; Cameron, Allan; Ryan, Mark T.; Pruitt, Jr., David L.. Method of assembling a shopping cart. USP2010097793948.
  13. Hendry James W. (Spring Hill FL). Method of injection molding with pressurized-fluid assist and variable-volume reservoir. USP1991075032345.
  14. Yamazaki Kunio (Takatsuki JPX) Watanabe Tetsuzi (Toyonaka JPX). Method of injection moulding. USP1990054923666.
  15. Hendry James W. (Englewood TN). Method of making a twin-wall internally corrugated plastic structural part with a smooth non-cellular skin. USP1984104474717.
  16. DeCost, Norman. Method of molding a cart using molding processes. USP2003076589458.
  17. Pruitt, Jr., David L.; Ryan, Mark T.; Shell, Charles E.; Peota, Robert D.; Crow, Kenneth R.; Sayer, Matthew E.. Method of molding a shopping cart. USP2010087780902.
  18. Winget Larry J. ; Murphy John F.. Mold for use in a gas-assisted injection molding system and gas pin assembly for use therein. USP2000046053720.
  19. Hendry, James; Homann, Gregory A.; Turczynski, David. Open mold molding. USP2005056890478.
  20. Pearson, Terrence C.. Plastic expulsion process. USP2004076767487.
  21. Pearson, Terrence C.. Plastic expulsion process for forming hollow tubular products. USP2005106953546.
  22. Homann, Gregory A.; Turczynski, David. Plastic injection molded articles with hollow rib members. USP2005056890477.
  23. Homann, Gregory A.; Hendry, James; Turczynski, David. Plastic injection molding with moveable insert members. USP2005096939504.
  24. Homann, Gregory A.. Plastic injection molding with moveable mold members forming speaker grill. USP2005056899843.
  25. Hendry James W. (Spring Hill FL) Cahan Geoffery D. (Little Kingshill GB2). Process and apparatus for injection moulding and mouldings produced thereby. USP1989044824732.
  26. Eckardt Helmut,DEX ; Plank Hermann,DEX ; Bleier Harald,AUX. Process for injection molding objects having at least two different layers. USP1999035882559.
  27. Ponzielli Giuseppe (Milan ITX). Process for manufacturing articles of foamed thermoplastic material and article produced thereby. USP1984034435523.
  28. Baxi Indra R. (Troy MI). Process of insection molding with pressurized gas assist. USP1990064935191.
  29. Splain,William D.; Peota,Robert D.; Hennen,Alexandre; Cameron,Allan; Ryan,Mark T.; Pruitt, Jr.,David L.. Shopping cart. USP200812D582122.
  30. Splain, William D.; Peota, Robert D.; Hennen, Alexandre; Cameron, Allan; Ryan, Mark T.; Pruitt, Jr., David L.. Shopping cart base. USP201009D623374.
  31. Peota, Robert D.; Splain, William D.; Tharp, Robert D.. Shopping cart handle. USP200904D591474.
  32. Peota,Robert D.; Splain,William D.; Tharp,Robert D.. Shopping cart seat member. USP200903D588774.
  33. Peota,Robert D.; Splain,William D.; Tharp,Robert D.. Shopping cart support assembly. USP200903D588775.