[특허]Method for fluid compression of injection molded plastic material

Method for fluid compression of injection molded plastic material 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B29C-045/34
출원번호	US-0961615 (1992-10-15)
발명자 / 주소	Hendry James W. (Brooksville FL)
출원인 / 주소	ICP Systems, Inc. (Madison Heights MI 02)
인용정보	피인용 횟수 : 36 인용 특허 : 0

초록 ▼

A mold apparatus and method is used to form a solid injection molded plastic part having no internal voids, a Class A finish, a sink-free exterior appearance surface, and unevenly distributed structural detail extending from the opposite surface, the detail including free-standing reinforcement ribs, attachment bosses, and the like. In the method the mold portions of the mold apparatus are closed, charges of molten thermoplastic and pressurized gas are sequentially injected into a mold cavity defining the shape of the desired part, and the mold portions are sequentially separated and closed. The pressurized gas forces the hot plastic away from one mold half and against the other mold half, and separation of the mold portions ensures uniform distribution of the pressurized gas behind the hot plastic, which pressure is maintained during cooling. Depending on the application, the plastic completely packs the cavity, fills but does not pack the cavity, and the mating faces can be abutted or maintained partially separated when the mold portions reclosed. A gas seal is formed by the plastic to prevent gas in the mold cavity from reaching the finished exterior surface of the part during shrinkage of the plastic.

대표청구항 ▼

In an injection molding process for producing a solid injection molded part having no internal voids and a sink free exterior, the process including introducing a predetermined quantity of molten thermoplastic resin into an article defining cavity formed by a pair of relatively movable mold portions each having a mold surface and clamping the mold portions together with a predetermined clamping force, the improvement comprising introducing gas under pressure into the cavity to pack the resin against one mold surface and force the resin away from the other mold surface to form a solid article and to simultaneously force the mold portions away from one another, and then forcing the mold portions towards one another to compress the gas to a second pressure.

이 특허를 인용한 특허 (36)

Lisch, G. David; Wilson, Bradley; Maki, Kirk E.; Eberle, Theodore F.; Mast, Luke A., Apparatus and method for controlling temperature gradient through wall thickness of container.
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Venerus David C. ; Kompani Mandana, Apparatus for generating generally uniform compression in high-viscosity liquids.
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Wilson, Brad; Maki, Kirk Edward; Lisch, George David, Compensation for hydrapak machine using isolator cylinder.
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Lisch, George David; Wilson, Bradley, Counter stretch connecting rod and positive fill level control rod.
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Lisch, George David; Wilson, Bradley, Counter stretch connecting rod and positive fill level control rod.
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James W. Hendry, Coupled fluid injection with flow control.
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Hendry, James W., Coupled fluid injection with same power source.
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James W. Hendry, Coupled fluid injection with simultaneous injection.
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James W. Hendry, Coupled fluid injection with volume determined by pressure.
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Ochiai, Kenichi; Kitagawa, Shinichiro; Shibuya, Masakazu, Fabrication method for laminated-type secondary battery.
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Firmin Herman P., Fishing lure molding method and fishing lure.
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Heuchert John Michael ; Hendry James Watson, Gas assisted injection molding combining internal and external gas pressures.
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Thomas, Ronald; Pitstick, Nicholas, Gas injected compression molding.
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Winget Larry J. ; Porter Randolph S. ; Murphy John F., Hollow plastic article formed by a gas-assisted injection molding system.
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Seno, Shinya; Hatakeyama, Toshiharu, Injection molding device with outside air inlet part.
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Seno,Shinya; Hatakeyama,Toshiharu, Injection molding device with outside air inlet part.
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Andison, David; Lisch, G. David; Weissmann, Dan; Granata, John; Beuerle, Fred C., Liquid or hydraulic blow molding.
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Andison, David; Lisch, G. David; Weissmann, Dan; Granata, John; Beuerle, Fred C., Liquid or hydraulic blow molding.
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Andison, David; Lisch, George David; Maki, Kirk Edward; Eberle, Theodore F.; Corn, Jr., James R.; Cooper, Robert A.; Patcheak, Terry D., Liquid or hydraulic blow molding.
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Maki, Kirk Edward; Lisch, George David; Wilson, Bradley, Method and apparatus for forming and filling a container.
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Maki, Kirk Edward; Lisch, George David; Wilson, Bradley, Method and apparatus for forming and filling a container.
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James Watson Hendry ; John Michael Heuchert, Method for fluid compression of injection molded plastic material.
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Okamoto, Akio; Miyamoto, Kazuaki, Method for multilayer molding of thermoplastic resins and multilayer molding apparatus.
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Yasuda Kazuharu,JPX ; Naruse Hideki,JPX ; Imai Susumu,JPX, Method for the injection molding of a resin.
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Matsumoto Yuichi,JPX ; Horikoshi Maki,JPX ; Imai Shoji,JPX, Method for the non-resin fluid-assisted injection molding of a resin.
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Sato Atsushi,JPX ; Nomura Manabu,JPX ; Shima Toru,JPX ; Wada Kaoru,JPX, Method of obtaining a gas-introduced fiber-reinforced resin injection molding.
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Daihisa, Takuji; Konno, Mitsugu, Method of removing extraneous matter from injection mold.
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Zibert Ronald, Method to improve pour-in place molding technology.
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Grinnall,Michael L.; Knapper,Alan W., Methods and apparatuses for the formation of blow molded objects.
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Kanematsu, Toshihiro; Yamanaka, Yasuo; Fukushima, Akira; Sawada, Kiyotaka; Murai, Motoyasu, Plastic molded article or product and method and apparatus for producing the same by injection molding.
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Eckardt Helmut,DEX ; Gosdin Michael,DEX, Process for controlling gas blanket extent in plastics injection molding.
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Thomas, Ronald, Process for pressure assisted molding of hollow articles.
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Tsuchiya, Atsushi; Tateyama, Hirofumi, Resin and gas injection molding method with subsequent cohering.
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Maki, Kirk Edward; Lisch, George David; Wilson, Bradley, Sealing system for molding machine.
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Ikarashi,Yoichi, Separation wall transfer mold, separation wall forming method, and plasma display panel formed by using the same.
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Kim, Chunho; Shi, Songhua; Ricotta, Mark S.; Sleeper, Scott B.; Wang, Yongqian, Systems for encapsulating a hybrid assembly of electronic components and associated methods.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

내보내기 구분	파일저장 인쇄 메일전송
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저장형식	Text(ASCII format) Excel format PIAS분석(.xls)
메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
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Method for fluid compression of injection molded plastic material 원문보기

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Method for fluid compression of injection molded plastic material 원문보기

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이 특허를 인용한 특허 (36)

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