[특허]Method for injection molding a composite foamed body having a foamed core and a continuous surface layer

[미국특허] Method for injection molding a composite foamed body having a foamed core and a continuous surface layer 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B29D-027/00 B29F-001/03
출원번호	US-0521184 (1974-11-05)
발명자 / 주소	Hanning Robert (Cavernago Parc 1 Campione d\Italia IT)
인용정보	피인용 횟수 : 27 인용 특허 : 0

초록 ▼

A method of injection molding a body of synthetic resin with a smooth surface and a porous core, which comprises the steps of injecting into a mold first outer synthetic resin forming a smooth surface of the body and thereafter synthetic-resin core material containing an expanding or foaming agent. Only part of the outer material is first injected, the remainder being injected simultaneously with the synthetic-resin core material.

대표청구항 ▼

A method of making a composite synthetic resin body having a foamed core and a continuous surface layer, said method comprising the steps of: a. injecting into a mold cavity of given volume an initial quantity of a melt of a first synthetic thermoplastic resin material adapted to form surface portions of said body through a passageway surrounding a tube penetrating into said mold cavity for a distance at least equal to the thickness of said layer, said passageway terminating short of the end of said tube penetrating into said mold; and b. thereafter injecting into said mold cavity through said tube a quantity of a melt of a second synthetic thermoplastic resin material containing an expanding agent to spread said first material along the walls of said cavity and concurrently therewith continuing to inject said first material through said passageway in a sheath around said melt of said second material at a rate such that the spreading of said the melt of first material by said second material is incapable of interrupting the continuity of the layer of said first material.

이 특허를 인용한 특허 (27) 인용/피인용 타임라인 분석

Eckardt Helmut (Hilchenbach-Allenbach DEX) Ehritt Jrgen (Hilchenbach-Allenbach DEX), Apparatus for forming plastic.
상세보기
Kudert Frederick G. (Niles IL) Latreille Maurice G. (Batavia IL) McHenry Robert J. (St. Charles IL) Nahill George F. (Crystal Lake IL) Pfutzenreuter ; III Henry (Alta Loma CA) Tennant William A. (Sch, Apparatus for injection molding and injection blow molding multi-layer articles.
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Kudert Frederick G. (Niles IL) Latreille Maurice G. (Batavia IL) McHenry Robert J. (St. Charles IL) Nahill George F. (Crystal Lake IL) Pfutzenreuter ; III Henry (Alta Loma CA) Tennant William A. (Sch, Apparatus for injection molding and injection blow molding multi-layer articles.
상세보기
Kudert Frederick G. ; Latreille Maurice G. ; McHenry Robert J. ; Nahill George F. ; Pfutzenreuter ; III Henry ; Tennant William A. ; Tung Thomas T. ; Vella ; Jr. John, Apparatus for injection molding and injection blow molding multi-layer articles.
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Kudert, Frederick G.; Latreille, Maurice G.; McHenry, Robert J.; Nahill, George F.; Pfutzenreuter, III, Henry; Tennant, William A.; Tung, Thomas T.; Vella, Jr., John, Apparatus for injection molding and injection blow molding multi-layer articles.
상세보기
Kudert Frederick G. ; Latreille Maurice G. ; McHenry Robert J. ; Nahill George F. ; Pfutzenreuter ; III Henry ; Tennant William A. ; Tung Thomas T. ; Vella ; Jr. John, Apparatus for injection molding multi-layer articles.
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McHenry Robert J. (St. Charles IL) Ryan Martin A. (Dunwoody GA), Apparatus for making a multi-layer injection blow molded container.
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Bemis, Peter F.; Berg, Gary Vande; Kolste, Steven, Co-injection methods using endothermic-blowing agents and products made therefrom.
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King, James M.; Benz, Walter, Device and method for surface replication.
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Potter Terry C. (Sylvania OH), Method and apparatus for coinjecting two thermoplastic materials.
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Monnet Bernard (Bellignat FRX), Method for injection moulding coated parts from plastics material.
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Mario Bertoglio IT, Method for manufacturing products through the use of waste materials of various kind.
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Krishnakumar Suppayan M. (Nashua NH) Nahill Thomas E. (Salem NH), Method of forming laminated preforms.
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Ritchey Eugene B., Method of injection molding.
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Barker Richard L., Method of making paint brush with co-injection molded handle.
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Ongena Robert E. (Romeo MI), Method of molding and coating a substrate in a mold..
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Nakamura, Masafumi; Suzuki, Masaru; Maeda, Hitoshi, Method of producing a polyurethane foam molded article.
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Montet Maurice (Bagnolet FRX) Baciu Antoine (Anbevoye FRX), Method of producing a reflector for a headlight, particularly for an automobile, by two-material injection molding.
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Kudert Frederick G. ; Latreille Maurice G. ; McHenry Robert J. ; Nahill George F. ; Pfutzenreuter ; III Henry ; Tennant William A. ; Tung Thomas T. ; Vella ; Jr. John, Methods and apparatus for injection molding and injection blow molding multi-layer articles, and the articles made ther.
상세보기
McHenry Robert J. ; Pfutzenreuter ; III Henry ; Tung Thomas T. ; Vella ; Jr. John, Methods and apparatus for injection molding and injection blow molding multi-layer articles, and the articles made thereby.
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Kudert Frederick G. ; Latreille Maurice G. ; McHenry Robert J. ; Nahill George F. ; Pfutzenreuter ; III Henry ; Tennant William A. ; Tung Thomas T. ; Vella ; Jr. John, Methods and apparatus for injection molding and injection blow molding multi-layer plastic and the articles made thereby.
상세보기
Kudert Frederick G. (Niles IL) Latreille Maurice G. (Batavia IL) McHenry Robert J. (St. Charles IL) Nahill George F. (Crystal Lake IL) Pfutzenreuter ; III Henry (Loma CA) Tennant William A. (Schaumbu, Methods for injection molding and injection blow molding multi-layer articles.
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Kilim Rafael Zvi Karl,GBX ; Kilim Simcha Izkhak,GBX, Moulding plastics article by varying cyclically its composition.
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Knott ; II Jack E. (Menasha WI) Koschak Matthew S. (Appleton WI) Adams John P. (Appleton WI), Package for food products.
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Witkowski, William, Plastic baseball bat and method of making the same.
상세보기
Matsumoto Masahito,JPX ; Murotani Hitoshi,JPX ; Funakoshi Satoru,JPX ; Matsubara Shigeyoshi,JPX, Process for producing multi-layer molded product.
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Toldo, Anthony G.; Meyer, Leo; Mourad, Osman, Toilet seat.
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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

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[미국특허] Method for injection molding a composite foamed body having a foamed core and a continuous surface layer 원문보기