• 검색어에 아래의 연산자를 사용하시면 더 정확한 검색결과를 얻을 수 있습니다.
  • 검색연산자
검색연산자 기능 검색시 예
() 우선순위가 가장 높은 연산자 예1) (나노 (기계 | machine))
공백 두 개의 검색어(식)을 모두 포함하고 있는 문서 검색 예1) (나노 기계)
예2) 나노 장영실
| 두 개의 검색어(식) 중 하나 이상 포함하고 있는 문서 검색 예1) (줄기세포 | 면역)
예2) 줄기세포 | 장영실
! NOT 이후에 있는 검색어가 포함된 문서는 제외 예1) (황금 !백금)
예2) !image
* 검색어의 *란에 0개 이상의 임의의 문자가 포함된 문서 검색 예) semi*
"" 따옴표 내의 구문과 완전히 일치하는 문서만 검색 예) "Transform and Quantization"

특허 상세정보

Plastic expulsion process for forming hollow tubular products

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B29D-022/00   
미국특허분류(USC) 264/572
출원번호 US-0918234 (2001-07-30)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 8  인용 특허 : 33

A system and process for gas assisted plastic injection molding, particularly of hollow tubular components. The plastic material is injected into the mold cavity through an apex of a cone-shaped inlet configuration. After the molding pressure is held for a period of time, gas is injected into the plastic material and pressure is again held for a period of time, a valve member is opened allowing plastic to be expelled into a secondary cavity. The flow of the plastic and gas are controlled in an axial direction in order to prevent turbulence. The gas flow ...


1. A process for injection molding a hollow plastic tubular article comprising the steps of:(a) injecting a quantity of plastic material into a mold cavity to at least substantially fill said mold cavity, the mold cavity having a substantially cone-shaped inlet portion, wall surfaces forming an elongated central portion, and an exit portion, said cone-shaved inlet portion having an apex; (b) injecting pressurized gas into the plastic material in the mold cavity said gas being injected at said apex; (c) holding the pressure of the gas and plastic in the m...

이 특허에 인용된 특허 (33)

  1. Yasuike ; Akio ; Kataoka ; Hiroshi ; Fujikawa ; Tutomu ; Suzuki ; Naoto. Apparatus for injection molding synthetic resin materials. USP1978084106887.
  2. Hendry, James W.. Apparatus for making a twin-wall, internally corrugated plastic structural part with a smooth non-cellular skin. USP1985114555225.
  3. Hanning Robert (Via Tagliaferri 15 Campione d\Italia IT). Apparatus for making thermoplastic articles with porous cores and less porous or nonporous skins. USP1977074033710.
  4. Gosdin Michael,DEX. Apparatus for producing hollow plastic objects with pressurized gas injection after overflow cut-off. USP1999075928677.
  5. Jaroschek Christoph (Herbolzheim DEX). Apparatus for the injection molding of fluid-filled plastic bodies. USP1995065423667.
  6. Jaroschek Christoph (Herbolzheim DEX). Apparatus for the injection molding of fluid-filled plastic bodies. USP1992025090886.
  7. Hendry James W. (Spring Hill FL). Apparatus for the injection molding of thermoplastics. USP1988114781554.
  8. 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.
  9. Hafele Robert X. (Baton Rouge LA). Injection blow molding apparatus. USP1986084604044.
  10. Hafele Robert X. (Baton Rouge LA). Injection blow molding process. USP1982114357296.
  11. Eckardt ; Helmut. Injection molding. USP1978034078875.
  12. Yasuike Akio (Yokohama JA) Shibuya Takehiro (Yokohama JA) Toyouchi Kaoru (Yokohama JA) Imai Susumu (Kanagawa JA). Injection molding apparatus for forming a composite, foam-skin, article. USP1976063966372.
  13. Hendry James W. (Englewood TN). Injection molding nozzle. USP1982064333608.
  14. Sasaki Nobuyoshi (Yokohama JPX). Injection molding process. USP1986074601870.
  15. Sayer Matthew E. (Tamworth GB2). Injection moulding apparatus. USP1988044740150.
  16. Mikael Hildesson SE; Tor Hesselgren SE; Lars Odelmark SE. Method and device for manufacturing a hollow plastic component. USP2002046372177.
  17. Weber ; Hermann P.. Method for injection molding lenses. USP1978054091057.
  18. Friederich ; Ernst. Method for injection molding of hollow shaped bodies from thermoplastic resins. USP1978074101617.
  19. Yasuike ; Akio ; Kataoka ; Hiroshi ; Toyouchi ; Kaoru. Method for producing foamed moldings from synthetic resin materials. USP1978124129635.
  20. Eckardt Helmut,DEX ; Ehritt Jurgen,DEX ; Seuthe Alfons,DEX ; Gosdin Michael,DEX. Method for producing plastic objects. USP1998065759459.
  21. Sakurai ; Eishiro. Method of blow molding and then exhausting hollow plastic articles. USP1978054092389.
  22. Loren Norman S. (Warren MI). Method of injection molding with pressurized-fluid assist. USP1991125069859.
  23. Monnet ; Bernard Leon. Method of injection moulding of articles of several materials. USP1978084104353.
  24. Hendry James W. (Englewood TN). Method of making a twin-wall internally corrugated plastic structural part with a smooth non-cellular skin. USP1984104474717.
  25. Olabisi Olagoke (Plainfield NJ). Molded plastic structural web articles. USP1980114234642.
  26. Hendry James W. (Brooksville FL). Process for injection molding and hollow plastic article produced thereby. USP1992035098637.
  27. Olabisi Olagoke (Plainfield NJ). Process for molding of plastic structural web articles. USP1981014247515.
  28. Kataoka Hiroshi (Tokyo JPX). Process for producing moldings. USP1979024140672.
  29. Jaroschek Christoph (Herbolzheim DEX). Process for the injection molding of fluid-filled plastic bodies. USP1993045204051.
  30. Olabisi Olagoke (Plainfield NJ). Process for the molding of plastic structural web and the resulting articles. USP1979014136220.
  31. Gotterbauer Klaus,DEX. Process of and an apparatus for injection molding hollow-blown plastic bodies. USP1998065759479.
  32. Appleman ; Theodore C. ; Wacker ; Wade L.. Shut-off nozzle. USP1978044082226.
  33. Olabisi Olagoke (Plainfield NJ). Structural foam molding process. USP1981034255368.