$\require{mediawiki-texvc}$
  • 검색어에 아래의 연산자를 사용하시면 더 정확한 검색결과를 얻을 수 있습니다.
  • 검색연산자
검색연산자 기능 검색시 예
() 우선순위가 가장 높은 연산자 예1) (나노 (기계 | machine))
공백 두 개의 검색어(식)을 모두 포함하고 있는 문서 검색 예1) (나노 기계)
예2) 나노 장영실
| 두 개의 검색어(식) 중 하나 이상 포함하고 있는 문서 검색 예1) (줄기세포 | 면역)
예2) 줄기세포 | 장영실
! NOT 이후에 있는 검색어가 포함된 문서는 제외 예1) (황금 !백금)
예2) !image
* 검색어의 *란에 0개 이상의 임의의 문자가 포함된 문서 검색 예) semi*
"" 따옴표 내의 구문과 완전히 일치하는 문서만 검색 예) "Transform and Quantization"

특허 상세정보

Process for processing expandable polymer particles and foam article thereof

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) C08J-009/00    C08J-009/18   
미국특허분류(USC) 521/056; 521/058; 521/060; 521/146
출원번호 US-0915141 (2004-08-10)
등록번호 US-7358280 (2008-04-15)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Matz,Gary F.
인용정보 피인용 횟수 : 12  인용 특허 : 10
초록

Process for processing expandable polymer particles e.g. polystyrene (EPS) that eliminates the maturing step between the pre-expander and molding steps. The expandable particles are first over pressurized with gas, e.g. air, carbon dioxide, nitrogen, and mixtures thereof, at a pressure between 500 and 8000 kPa and a temperature between-20�� C. and 130�� C. for 15 to 7200 minutes to create a gas pressure in the particles. Using the gas pressure in the particles, pre-expanding the particles with a heating medium, e.g. steam at a temperature between 100�� ...

대표
청구항

What is claimed is: 1. A process for processing polymer particles which optionally contain a blowing agent, the steps consisting of: a) in a pressurization unit, over-pressurizing said polymer particles with a high pressurized gas to create a high gas pressure inside said particles; b) immediately transferring said particles to a pre-expander and pre-expanding said particles with a heating medium to form pre-expanded particles, and directing a flow of hot dry air onto said pre-expanded particles to dry said pre-expanded particles in the pre-expander whi...

이 특허에 인용된 특허 (10)

  1. Algis P. August CA; Casey P. August. Dry expansion of expandable polymer beads. USP2002066399665.
  2. Berghmans, Michel Florentine Jozef; Du Mong, Kurt Ernest Irma; Bleijenberg, Karel Cornelis; Verbist, Guy Lode Magda Maria. Porous polymer particles. USP2003036538042.
  3. Collom William (Alburtis PA) Fuller Dennis (West Chester PA) Kinslow Joseph (Media PA) Meyer Bernard H. (Newtown Square PA) Immel Richard H. (West Chester PA). Process and apparatus for rapid pre-expension and molding of expandable polymer particles. USP1993125271886.
  4. Berghmans, Michel Florentine Jozef; Bleijenberg, Karel Cornelis; Metsaars, Alphonsus Catharina Gerardus. Process for the preparation of expandable polyvinylarene particles. USP2003066573306.
  5. Michel Florentine Jozef Berghmans NL; Karel Cornelis Bleijenberg NL; Alphonsus Catharina Gerardus Metsaars NL. Process for the preparation of expanded polyvinylarene particles. USP2002096455599.
  6. Berghmans Hugo Angela Albert,BEX ; Chorvath Igor,NLX ; Kelemen Peter,BEX ; Neijman Eric Wilhelmus Johannes Frederik,NLX ; Zijderveld Johannes Maria,NLX. Process for the preparation of polymer particles. USP2000106127439.
  7. Crevecoeur Jeroen Joost,NLX ; Neijman Eric Wilhelmus Johannes Frederik,NLX ; Nelissen Laurentius Nicolaas Ida Hubertus,NLX ; Zijderveld Johannes Maria,NLX. Process for the preparation of polymer particles. USP2001066242540.
  8. Crevecoeur Jeroen Joost,NLX ; Neijman Eric Wilhelmus Johannes Frederik,NLX ; Nelissen Laurentius Nicolaas Ida Hubertus,NLX ; Zijderveld Johannes Maria,NLX. Process for the preparation of polymer particles. USP2000126160027.
  9. Meyer Bernard H. (Newtown Square PA) Kinslow Joseph C. (Media PA). Purification, impregnation and foaming of polymer particles with carbon dioxide. USP1991095049328.
  10. Meyer Bernard H. (Newtown Square PA) Kinslow Joseph C. (Media PA). Reimpregnation of plastic foam particles with CO2. USP1990034911869.