[특허]Process for reclaiming thermally strained polyester scrap material

Process for reclaiming thermally strained polyester scrap material 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B29B-017/00 B29C-047/76
출원번호	US-0783699 (1991-10-30)
우선권정보	DE-4034459 (1990-10-30)
발명자 / 주소	Deiringer Guenther (Kastl DEX)
출원인 / 주소	Hoechst Aktiengesellschaft (Frankfurt am Main DEX 03)
인용정보	피인용 횟수 : 39 인용 특허 : 0

초록 ▼

Reclaiming of polyester waste material for re-use in the production of high-quality PET plastic material comprises shredding, cleaning, sorting and postcondensing said waste materials. The shredded scrap material comprises polyester waste materials of various molecular weights and degrees of purifying. The shredded material is molten and filtered The filtered melt is either post-condensed in the molten state and then granulated or is first granulated and then subjected to a solid phase post-condensation. The granules obtained in each case are preferably fed into an extruder and extruded together with virgin raw material so as to produce a useful film or article.

대표청구항 ▼

A process for reclaiming thermally strained polyester waste materials comprising the steps of: a) shredding a mixture of polyester waste materials, said mixture comprising polyesters of different molecular weights and different degrees of conversion, so as to form a shredded polyester mixture, b) melting said shredded mixture so as to form a molten material, c) filtering said molten material down to a particle size of about 5 to 10 microns, by removing those impurities having a particle size of equal to about 5 to 10 microns and removing those impurities having a size of greater than 5 to 10 microns, so as to produce a filtered melt, d) increasing by about 12 to about 150% as compared to the initial molecular weight of said filtered melt, the average molecular weight of said polyesters, by post-condensation, so as to produce a condensed mixture, and e) recovering said condensed mixture.

이 특허를 인용한 특허 (39)

Kelman Josh (Dover NH) Roberts Stephen N. (Dover NH) Knight William W. (Livonia MI) Reed Randy (Algonac MI) Pinson David R. (East Rochester NH) Brault Alfred F. (South Berwick ME), Cushioned automotive interior trim part and process or making same.
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Shigenobu Yoshida JP; Yuzou Otani JP, Deposited plastic film.
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Nichols Carl S. ; Moore Tony Clifford, Food quality polyester recycling.
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Pfaendner Rudolf (Rimbach/Odenwald DEX) Herbst Heinz (Lautertal-Reichenbach DEX) Hoffmann Kurt (Lautertal DEX), Increasing the molecular weight of polyesters.
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William Donald Robinson ; Gary L. Vadnais, Inline solid state polymerization of PET flakes for manufacturing plastic strap by removing non-crystalline materials from recycled PET.
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Kelman Josh, Material system for soft interior automotive parts.
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Hamatani Tsutomu,JPX ; Hamamori Kenshi,JPX, Method for manufacture of regenerated synthetic resin product.
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Schofield, John Paul; Schofield, Janet Ellen, Method of making simulated landscaping rocks and edging blocks from expended plastic bottles.
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Mashburn, Larry; Harrison, IV, William Henry; Miller, Dewayne Ray, Method of recycling synthetic turf and infill product.
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Clark, Thomas R., Methods for manufacturing bulked continuous filament.
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Clark, Thomas R., Methods for manufacturing bulked continuous filament.
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Clark, Thomas R., Methods for manufacturing bulked continuous filament.
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Lieberman Mark, Painted plastic material recycling process.
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Salsman, Robert Keith, Polymer manufacturing process.
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Salsman, Robert Keith, Polymer manufacturing process.
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Kulesa, Robert Francis; Feeney, James J.; Carlstedt, Richard Wayne; Blake, Daniel William; Hacker, Buckell Gary, Post consumer scrap film recycling process.
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Kulesa, Robert Francis; Feeney, James J.; Carlstedt, Richard Wayne; Blake, Daniel William; Hacker, Buckell Gary; Johnson, Abby Marie, Post consumer scrap film recycling process.
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Kulesa, Robert Francis; Feeney, James J.; Carlstedt, Richard Wayne; Blake, Daniel William; Hacker, Buckell Gary; Johnson, Abby Marie, Post consumer scrap film recycling process.
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Kulesa, Robert Francis; Feeney, James J.; Carlstedt, Richard Wayne; Blake, Daniel William; Hacker, Buckell Gary; Johnson, Abby Marie, Post consumer scrap film recycling process.
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Kulesa, Robert Francis; Feeney, James J.; Carlstedt, Richard Wayne; Blake, Daniel William; Hacker, Buckell Gary, Post consumer scrap film recycling system.
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Kulesa, Robert Francis; Feeney, James J.; Carlstedt, Richard Wayne; Blake, Daniel William; Hacker, Buckell Gary, Post-consumer scrap film recycling system and process.
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Kulesa, Robert Francis; Feeney, James J.; Carlstedt, Richard Wayne; Blake, Daniel William; Hacker, Buckell Gary, Post-consumer scrap film recycling system and process.
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Kulesa, Robert Francis; Feeney, James J.; Carlstedt, Richard Wayne; Blake, Daniel William; Hacker, Buckell Gary, Post-consumer scrap film recycling system and process.
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Kulesa, Robert Francis; Feeney, James J.; Carlstedt, Richard Wayne; Blake, Daniel William; Hacker, Buckell Gary, Post-consumer scrap film recycling system and process.
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Kulesa, Robert Francis; Feeney, James J.; Carlstedt, Richard Wayne; Blake, Daniel William; Hacker, Buckell Gary; Johnson, Abby Marie, Post-consumer scrap film recycling system and process.
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Kulesa, Robert Francis; Feeney, James J.; Carlstedt, Richard Wayne; Blake, Daniel William; Hacker, Buckell Gary; Johnson, Abby Marie, Post-consumer scrap film recycling system and process.
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Kulesa, Robert Francis; Feeney, James J.; Carlstedt, Richard Wayne; Blake, Daniel William; Hacker, Buckell Gary; Johnson, Abby Marie, Post-consumer scrap film recycling system and process.
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Kern,Ulrich; Murschall,Ursula; Kliesch,Holger, Process for producing a thermoplastic film using plastic bottle recyclate.
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Takatoshi Miki JP, Process for producing polyester composition.
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Kern, Ulrich; Murschall, Ursula; Kuhmann, Bodo; Crass, Guenther, Process for production of biaxially oriented films based on crystallizable thermoplastics, using recycled material whose molecular weight has been increased by condensation processes.
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Bower, Douglas J.; Carroll, Arron; Yamamoto, Satoshi, Process for recycling immiscibles in PET film.
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Ledbetter, Marshall Dean; Trojan, Kathleen L., Process for recycling waste film and product made therefrom.
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Ledbetter, Marshall Dean; Trojan, Kathy L., Process for recycling waste film and product made therefrom.
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Wisner Ralph, Process for removing deleterious surface material from polymeric regrind particles.
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Borer, Camille; Culbert, Brent Allen, Process for upgrading plastic material.
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Inoue, Kazushige; Ikeda, Akio; Kimura, Takato; Shimoda, Tomoaki; Tatsumi, Masahiko, Recycle process for polycondensation resins.
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Smith Brad L. ; Wilkins Gary E., Recycling polyester and recovering glycols.
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Brooks J. Douglas ; Bennett Ronnie R., System and method for cleaning and recovering plastic from coated fiber polywaste.
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Cheng Shao-Szu,TWX ; Liu Tung-Han,TWX, Waste foamed polystyrene material reclaiming system.
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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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연합인증

Process for reclaiming thermally strained polyester scrap material 원문보기

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Process for reclaiming thermally strained polyester scrap material 원문보기

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이 특허를 인용한 특허 (39)

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