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Method for gas assist injection molding

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B29D-022/00   
미국특허분류(USC) 264/572
출원번호 US-0140994 (1998-08-27)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Dinnin & Dunn, P.C.
인용정보 피인용 횟수 : 18  인용 특허 : 17
초록

A method of providing gas assistance to a plastic injection molding process including an initial burst of gas at the supply pressure.

대표
청구항
▼

1. A method of supplying gas from a gas source into a molten plastic injection molding apparatus comprising the steps of:injecting the gas into said molding apparatus for a first interval into a moving supply of plastic material at a point before said material enters an inlet of said apparatus without substantially diminishing the pressure of said gas from said gas source; injecting the gas into said molding apparatus at a second pressure lower than the pressure of said gas in said gas source for a second period substantially longer than said first inter...

이 특허에 인용된 특허 (17)

  1. Nelson William A. (New Baltimore MI) Shemanski Joseph (Shelby Township ; Oceana County MI). Apparatus for gas assisted injection molding having precise control of injection and holding pressure with stepped holdi. USP1994035295800.
  2. Hendry James W. (Spring Hill FL). Apparatus for the injection molding of thermoplastics. USP1988114781554.
  3. Blankenburg Karl. Gas assist injection molding apparatus and method with multiple temperature gas supply. USP1998035728325.
  4. Loren Norman S. (24874 Chalk Farm Rd. Warren MI 48091). Gas assisted injection molding. USP1992065118455.
  5. Erikson Jon R.. Gas nozzle assembly for a gas assisted injection molding system. USP1999085939103.
  6. Steinbichler Georg (Rottenmann ATX) Lampl Alfred (Schwertberg ATX). Injection molding process with pressure increasing mechanism. USP1992085141682.
  7. Sayer Matthew E. (Tamworth GB2). Injection moulding apparatus. USP1988044740150.
  8. Nelson William A. (New Baltimore MI). Method and apparatus for gas assisted injection molding. USP1993045200127.
  9. Hendry James W. (Spring Hill FL). Method for the injection molding of plastic articles using fluid pressure. USP1989084855094.
  10. Hendry James W. (Brooksville FL). Method of and apparatus for injection molding with pressurized fluid assist. USP1990074943407.
  11. Eckardt Helmut (Meinerzhagen DEX) Ehritt Jrgen (Hilchenbach-Msen DEX). Method of injection molding articles of thermoplastic materials. USP1991095047183.
  12. Hendry James W. (Spring Hill FL). Method of injection molding with pressurized-fluid assist and variable-volume reservoir. USP1991075032345.
  13. Vecchiarino Luigi,ITX ; Siano Dante,ITX. Process for the manufacture of trim panels for motorvehicles. USP1998095799385.
  14. Baxi Indra R. (Troy MI). Process of insection molding with pressurized gas assist. USP1990064935191.
  15. Shah Suresh D. (Troy MI) Wenzel Edward J. (Troy MI). Pulsating gas-assisted injection molding apparatus. USP1997065637328.
  16. Matsuyama Haruhiko (Hiratsuka JPX) Shoji Fusaji (Yokohama JPX) Kuwatsuka Shunichiro (Odawara JPX) Sugimoto Kenji (Odawara JPX). Thin film magnetic head. USP1989044824731.
  17. Hendry James W. (Spring Hill FL). Variable volume reservoir and method for its use. USP1992075131226.

이 특허를 인용한 특허 피인용횟수: 18

  1. Peterson, Edward R.; Gattis, Sean C.. Absorption and conversion of acetylenic compounds. USP2011098013197.
  2. Roberts, Jr., Richard W.. Bathtub/shower tray support. USP2016039271610.
  3. Roberts, Richard W.. Bathtub/shower tray support. USP20181110130220.
  4. Holmann,Gregory A.; Hendry,James. Gas assisted injection molding with fixed volume gas reservoir and temperature control. USP2007027182892.
  5. Roberts, Richard W.. In-situ foam core dielectrically-resistant systems and method of manufacture. USP2014048708177.
  6. Roberts, Richard W.. In-situ foam core structural articles and methods of manufacture of profiles. USP2015089102086.
  7. Roberts, Richard W.. In-situ foam core structural articles and system for forming. USP2017069688046.
  8. Roberts, Jr., Richard W.. In-situ foam core structural energy management system and method of manufacture. USP2014098840819.
  9. Roberts, Richard W.. In-situ foam core vehicle seating system and method of manufacture. USP2015079073462.
  10. Hendry, James; Homann, Gregory A.; Turczynski, David. Open mold molding. USP2005056890478.
  11. Roberts, Jr., Richard W.. Packaging component, method of use, and method of manufacture. USP2013128596027.
  12. Homann, Gregory A.; Turczynski, David. Plastic injection molded articles with hollow rib members. USP2005056890477.
  13. Homann, Gregory A.; Hendry, James; Turczynski, David. Plastic injection molding with moveable insert members. USP2005096939504.
  14. Homann, Gregory A.. Plastic injection molding with moveable mold members forming speaker grill. USP2005056899843.
  15. Roberts, Jr., Richard W.. Recyclable plastic structural articles and method of manufacture. USP2013018342420.
  16. Roberts, Jr., Richard W.. Recyclable plastic structural articles and method of manufacture. USP2016059346237.
  17. Roberts, Richard W.. Recyclable plastic structural articles and method of manufacture. USP20190210207606.
  18. Roberts, Jr., Richard W.. Structural plastic articles, method of use, and methods of manufacture. USP2016039272484.

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