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특허 상세정보

Apparatus and method for multi-layer injection molding

특허상세정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B29C-045/20    B29C-045/76   
미국특허분류(USC) 264/3281; 264/3288; 425/130; 425/564; 425/573
출원번호 US-0329036 (1999-06-09)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    McDonnell Boehnen Hulbert & Berghoff
인용정보 피인용 횟수 : 14  인용 특허 : 105
초록

An apparatus and method for injection molding includes a first melt passage for the flow of a first material, and a second melt passage in communication with the first melt passage for the flow of a second material. The apparatus and method for injection molding also includes a valve pin that passes through the second melt passage. The valve pin has a first portion allowing the flow of the second material, but not the first material, through the second melt passage, and a second portion restricting the flow of the first material and the second material t...

대표
청구항

1. An injection molding apparatus comprising:a nozzle with a front opening; a first melt passage for flow of a first molten material, the first melt passage being positioned outside of the nozzle; a melt channel for flow of the first molten material, the melt channel being in connection with the first melt passage and the front opening of the nozzle; and a unitary valve pin positioned in a central bore and passing through the first melt passage and the melt channel, the valve pin having a first portion, a second portion, and a third portion, the first po...

이 특허에 인용된 특허 (105)

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이 특허를 인용한 특허 피인용횟수: 14

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  2. Babin, Denis; Gammon, Scott. Coinjection hot runner injection molding system. USP2016119498911.
  3. Ten, Valery; Fairy, Fabrice. Coinjection hot runner injection molding system. USP2014068753102.
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  6. Ten, Valery; Fairy, Fabrice; Babin, Denis; Gammon, Scott. Coinjection hot runner injection molding system. USP2014068757998.
  7. Keck,Ed; Bridgen,Dale E.. Dual injection manifold. USP2008067390184.
  8. Hosokoshiyama, Hiroshi; Chiba, Junichi; Watanabe, Yosuke. Injection molding process of a preform for use in biaxial stretching and blow molding. USP2018019862157.
  9. Maruyama, Katsuya; Hara, Takeshi; Terada, Yoshihiro; Ota, Takao. Method of injection molding multi-layered articles. USP2003046544459.
  10. Swenson, Paul. Method of molding multi-layer polymer plastic articles with control of relative shifting of the core layer. USP2003076596213.
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