[특허]Process for preparing extruded foam bodies

Process for preparing extruded foam bodies 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B29C-047/88
출원번호	US-0598020 (1990-10-12)
발명자 / 주소	Brackman Joseph A. (Uniontown OH) Breindel Raymond M. (Uniontown OH)
출원인 / 주소	U.C. Industries, Inc. (Parsippany NJ 02)
인용정보	피인용 횟수 : 22 인용 특허 : 0

초록 ▼

A process for preparing an extruded thermoplastic resin elongate foam body comprising an alkenyl-substituted aromatic resin characterized as having a density of between about 0.9 to about 3.5 pounds per cubic foot is described. The process comprises the steps of (A) heat plastifying the thermoplastic resin; (B) adding at least one fluid blowing agent comprising at least one of 1-chloro-1,1-difluoroethane, 1,1,1,2-tetrafluoroethane and 2-chloro-1,1,1,2-tetrafluoroethane; (C) uniformly mixing the blowing agent in the resin under a pressure sufficient to prevent blowing of the resin thereby forming a blowable resin mixture; (D) extruding the mixture into a region of reduced pressure which is less than atmospheric pressure wherein the blowable resin mixture expands into a foam body; and (E) cooling the foam body. In one embodiment, the region of less than atmospheric pressure is formed by an elongated chamber with the blowable resin mixture passing through a die at one end of such chamber and such foam body passing through a pool of water at the opposite end of the chamber. The process results in the formation of extruded expanded thermoplastic resins such as polystyrene resins characterized as having relatively small average cell sizes such as from about 0.2 to about 0.5 mm., improved and higher compressive strengths, and higher cell volumes.

대표청구항 ▼

A process for preparing an extruded thermoplastic resin elongate foam body comprising an alkenyl-substituted aromatic resin characterized as having a density of between about 0.9 and about 3.5 pounds per cubic foot and an average cell size from about 0.2 to about 0.5 mm which comprises the steps of (A) heat plastifying said thermoplastic resin; (B) adding from about 6 to about 16 parts by weight based on the weight of the resin of at least one fluid blowing agent comprising at least one of 1-chloro-1,1-difluoroethane, 1,1,1,2-tetrafluoroethane and 2-chloro-1,1,1,2-tetrafluoroethane; (C) uniformly mixing the blowing agent in the resin under a pressure sufficient to prevent blowing of the resin thereby forming a blowable resin mixture; (D) extruding the mixture into a region wherein the pressure is from about 2 to about 27 inches of mercury absolute wherein the blowable resin mixture expands into a foam body; and (E) cooling the foam body.

이 특허를 인용한 특허 (22)

Myer, Wayne J.; Kelley, Blaine M., Apparatus and process for making a corrugation-free foam.
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Myer,Wayne J.; Kelley,Blaine M., Apparatus for making a corrugation-free foam.
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Wayne J. Myer ; Blaine M. Kelley, Apparatus for making a corrugation-free foam.
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Handa, Y. Paul, Expanded and extruded biodegradable and reduced emission foams made with methyl formate-based blowing agents.
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Handa, Y. Paul; Francis, Gary A., Expanded and extruded polyolefin foams made with methyl formate-based blowing agents.
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Suh Kyung W. ; Shmidt Creston D. ; Imeokparia Daniel D. ; Platt Alan E. ; Wessel Thomas E., High temperature syndiotactic styrene polymer foam.
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Suh Kyung W. ; Shmidt Creston D. ; Imeokparia Daniel D. ; Platt Alan E. ; Wessel Thomas E., High temperature syndiotactic styrene polymer foam.
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Novitsky Charles, Method for producing vacuum insulating and construction material.
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Cheung, Yunwa Wilson; Dobreski, David V.; Turner, Richard; Wheeler, Mark; Handa, Y. Paul, Polymer blends of biodegradable or bio-based and synthetic polymers and foams thereof.
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Cheung, Yunwa Wilson; Dobreski, David V.; Turner, Richard; Wheeler, Mark; Handa, Y. Paul, Polymer blends of biodegradable or bio-based and synthetic polymers and foams thereof.
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Myer, Wayne J.; Kelley, Blaine M., Process for making a corrugation-free foam.
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Handa, Y. Paul; Francis, Gary A.; Castner, Glenn C.; Zafar, Mohammad, Reduced-VOC and non-VOC blowing agents for making expanded and extruded thermoplastic foams.
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Handa, Y. Paul; Francis, Gary A.; Castner, Glenn C.; Zafar, Mohammad, Reduced-VOC and non-VOC blowing agents for making expanded and extruded thermoplastic foams.
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Handa, Y. Paul; Francis, Gary A.; Castner, Glenn C.; Zafar, Mohammad, Reduced-VOC and non-VOC blowing agents for making expanded and extruded thermoplastic foams.
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Handa, Y. Paul; Francis, Gary A.; Castner, Glenn C.; Zafar, Mohammad, Reduced-VOC and non-VOC blowing agents for making expanded and extruded thermoplastic foams.
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Hartman, Hermann David; Hartman, Steven David, Residual gas extraction process.
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Sadinski Robert L., Sealable chamber extrusion apparatus and method with process controls.
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Sadinski Robert L. ; Lincoln ; Jr. Robert M. ; Woodburn Russell C., Sealable chamber extrusion apparatus with seal controls.
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Miller, Larry M.; Breindel, Raymond M.; Weekley, Mitchell Z.; Cisar, Thomas E., To enhance the thermal insulation of polymeric foam by reducing cell anisotropic ratio and the method for production thereof.
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Sadinski Robert L., Vacuum extrusion system.
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Robert L. Sadinski, Vacuum extrusion system and method.
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Sadinski Robert L., Vacuum extrusion system and method.
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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
구성항목	기본정보 상세정보 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표IPC 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 공고번호, 공고일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표출원인, 출원인국적, 출원인주소, 발명자, 발명자E, 발명자코드, 발명자주소, 발명자 우편번호, 발명자국적, 대표IPC, IPC코드, 요약, 미국특허분류, 대리인주소, 대리인코드, 대리인(한글), 대리인(영문), 국제공개일자, 국제공개번호, 국제출원일자, 국제출원번호, 우선권, 우선권주장일, 우선권국가, 우선권출원번호, 원출원일자, 원출원번호, 지정국, Citing Patents, Cited Patents
저장형식	Text(ASCII format) Excel format PIAS분석(.xls)
메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
안내	총 건의 자료가 검색되었습니다. 다운받으실 자료의 인덱스를 입력하세요. (1-10,000) 검색결과의 순서대로 최대 10,000건 까지 다운로드가 가능합니다. 데이타가 많을 경우 속도가 느려질 수 있습니다.(최대 2~3분 소요) 다운로드 파일은 UTF-8 형태로 저장됩니다. 파일의 내용이 제대로 보이지 않을실 때는 웹브라우저 상단의 보기 -> 인코딩 -> 자동선택 여부를 확인하십시오. ~ Text(ASCII format) Excel format

연합인증

Process for preparing extruded foam bodies 원문보기

초록 ▼

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Process for preparing extruded foam bodies 원문보기

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연구과제 타임라인

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이 특허를 인용한 특허 (22)

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