[특허]Thermoset plastic pellets and method and apparatus for making such pellets

Thermoset plastic pellets and method and apparatus for making such pellets 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	C08J-009/32 B29B-009/06 B29C-065/30 B29C-067/02
출원번호	US-0837624 (1986-03-10)
발명자 / 주소	Wycech Joseph (Grosse Pointe Woods MI)
출원인 / 주소	Essex Composite Systems (Fraser MI 02)
인용정보	피인용 횟수 : 36 인용 특허 : 0

초록 ▼

The method of the present invention includes mixing a low viscosity thermoset resin and microspheres together without melting the thermoset resin and extruding the mixture to form a continuous strand of paste-like uncured material. The continuous strand is gelled on a conveyor which preferably includes a radiant heater or other means for accelerating the gelling of the continuous strands into solid form. The strands are then cut or chopped into pellet form and may be coated with an adhesive or B-staged material in preparation for forming into structural reinforcements. The pellets are filled with microspheres in the amount of 20 to 35% of resin weight. The pellets may include unexpanded thermally expandable microspheres which permit expansion of the pellets when exposed to heat to provide a pellet having a bulk density as low as 9 pounds per cubic foot. The pellets may be formed of a thermoset resin such as a polyester resin or epoxy resin, vinylester resin, polyurethane resin, or phenolic resin and may include organic, inorganic or glass pre-expanded microspheres. Alternatively, the pellets may include unexpanded thermally expandable thermoplastic microspheres or a liquid blowing agent if expansion of the pellets is desired. A cure aid or curing agent may be included in the pellet mix to facilitate curing of the pellet in the final reinforcement and other additives may be incorporated in the pellet mix to improve extrudability or other properties of the pellets.

대표청구항

A solid pellet consisting essentially of substantially uncured thermoset polymeric resin and microspheres which have been intermixed and extruded said pellet having a coating of a B-staged resin.

이 특허를 인용한 특허 (36)

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Da Re\ Mario (Turin ITX), Method for the production of unsaturated polyester resin based articles by moulding.
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Hashimoto, Osamu; Najima, Kazuyuki; Nozaki, Ryuji, Method of and apparatus for manufacturing molded materials of thermosetting resin composition.
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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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Thermoset plastic pellets and method and apparatus for making such pellets 원문보기

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Thermoset plastic pellets and method and apparatus for making such pellets 원문보기

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