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특허 상세정보

Method for injection molding plastic article with gas-assistance

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B29C-045/00    B29D-022/00   
미국특허분류(USC) 264/572 ; 264/161 ; 264/3287 ; 264/3288
출원번호 US-0488980 (1990-03-05)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 35  인용 특허 : 6
초록

A method and apparatus for injection molding plastic articles with gas-assistance wherein the injected molten plastic is depressurized by a controlled amount prior to gas injection to facilitate the penetration of the gas into the molten plastic within the article-defining cavity of the mold.

대표
청구항

In an apparatus for injection molding, a method of injection molding a plastic article with gas-assistance, the method comprising the steps of: injecting a pressurized charge of molten plastic through a flow path having a volume at least partially defined by a movable part of the apparatus and into an article-defining cavity of a mold; then depressurizing the molten plastic in the flow path by a controlled amount after the injection step by moving the movable part; then introducing a charge of gas pressurized at a predetermined level into the molten plas...

이 특허를 인용한 특허 피인용횟수: 35

  1. Roberts, Jr., Richard W.. Bathtub/shower tray support. USP2016039271610.
  2. Roberts, Richard W.. Bathtub/shower tray support. USP20181110130220.
  3. Kohler, Dale W.; Schmidt, Joshua G.. Climate variable lacrosse heads and related methods of use. USP2013028376880.
  4. Kohler, Dale W.; Schmidt, Joshua G.. Climate variable lacrosse heads and related methods of use. USP2013078480518.
  5. Kohler, Dale W.; Schmidt, Joshua G.. Climate variable lacrosse heads and related methods of use. USP2012098267814.
  6. Kohler, Dale W.; Schmidt, Joshua G.. Climate variable lacrosse heads and related methods of use. USP2014028651984.
  7. Blankenburg Karl. Gas assist injection molding apparatus and method with multiple temperature gas supply. USP1998035728325.
  8. Daniels Vernon Arthur. Gas assisted injection molding system. USP1999126000925.
  9. Kubo Kimihiro,JPX ; Sato Masahiko,JPX ; Kondo Masaaki,JPX. Hollow, resin mechanical part having a shaft integrally formed therewith and an injection molding method for producing t. USP1998065773109.
  10. Roberts, Richard W.. In-situ foam core structural articles and methods of manufacture of profiles. USP2015089102086.
  11. Roberts, Richard W.. In-situ foam core structural articles and system for forming. USP2017069688046.
  12. Roberts, Jr., Richard W.. In-situ foam core structural energy management system and method of manufacture. USP2014098840819.
  13. Roberts, Richard W.. In-situ foam core vehicle seating system and method of manufacture. USP2015079073462.
  14. Atsushi Ishikawa JP. Injection controlling method for an injection molding machine. USP2002076416694.
  15. Winningham, Matthew M.; Schmidt, Joshua G.. Lacrosse head. USP2013088512173.
  16. Winningham, Matthew M.; Schmidt, Joshua G.. Lacrosse head. USP2012108282512.
  17. Morrow, David; Hubbard, Jesse; Maliszewski, Andrew; Winningham, Matthew. Lacrosse head and method of forming same. USP2010067727457.
  18. Morrow,David; Hubbard,Jesse; Maliszewski,Andrew; Winningham,Matthew. Lacrosse head and method of forming same. USP2007067226374.
  19. Tatham Glenn L.. Method and apparatus for plastic injection molding flow control. USP1998125849236.
  20. De'ath Roderick Michael,GBX. Method and apparatus for preventing sink marks in the injection moulding of thermoplastic polymers. USP2000066071463.
  21. Sato Atsushi,JPX ; Nomura Manabu,JPX ; Shima Toru,JPX ; Wada Kaoru,JPX. Method of obtaining a gas-introduced fiber-reinforced resin injection molding. USP2000126165396.
  22. Bresselschmidt, Andreas; Ganninger, Jochen; Heil, Benedikt; Jungnickel, Uwe; Kotitschke, Joerg; Reuschenbach, Andreas; Schulz, Holger. Method to manufacture an injection molded component and injection molded component. USP2018069993066.
  23. Twork, Michael J.; Jones, Kenneth Raymond. Methods of making interior panels having integrated airbag deployment doors for motor vehicles. USP2017079713890.
  24. Hendry, James; Homann, Gregory A.; Turczynski, David. Open mold molding. USP2005056890478.
  25. Wall,W. Henry. Oro-pharyngeal airway with breath monitor. USP2006057036501.
  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. Hardgrove William. Pressure-activated gas injection valve for an injection molding apparatus. USP2000086099284.
  30. Sarver David (Logansport IN) D\Alessio Keith (Warsaw IN) D\Alessio Raymond A. (Madison CT). Process for making polymeric articles. USP1997125702656.
  31. Shah Suresh D. (Troy MI) Wenzel Edward J. (Troy MI). Pulsating gas-assisted injection molding apparatus. USP1997065637328.
  32. Roberts, Jr., Richard W.. Recyclable plastic structural articles and method of manufacture. USP2016059346237.
  33. Roberts, Richard W.. Recyclable plastic structural articles and method of manufacture. USP20190210207606.
  34. Winningham, Matthew M.; Schmidt, Joshua G.. Reinforced lacrosse head and related method of manufacture. USP2011108029390.
  35. Roberts, Jr., Richard W.. Structural plastic articles, method of use, and methods of manufacture. USP2016039272484.