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특허 상세정보

Extruded solid plastic sheet or film

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B32B-007/02    B32B-027/36    C08F-220/14   
미국특허분류(USC) 428/215 ; 428/220 ; 428/412 ; 428/421
출원번호 US-0711948 (1991-06-07)
우선권정보 DE-4018531 (1990-06-09)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 16  인용 특허 : 0
초록

Extruded, smooth finished solid sheet or film, which may have a thickness 50°C., which under conditions of orientation displays optical birefringence, may be manufactured into a flat strip with smooth finished surfaces, to yield a strip which has characteristics as follows: optical birefringence path difference less than or equal to 50 nm (single pass); low surface roughness; low variation in thickness; by extrusion of the plastic in a thermoplastic state, through a slot nozzle; wherein during or after the smoothing of the two surfaces one of the surface...

대표
청구항

An extruded sheet or film of a thermoplastic plastic having a glass transition temperature >50°C. and a thickness 1 mm; wherein said thermoplastic plastic is selected from the group consisting of polymethyl methacrylate, polyacrylonitrile, polyvinyl chloride, polyvinylidene fluoride, polymethylpentene, polystyrene polyvinyl carbozole, bisphenol-A polycarbonate, polyethylene terephthalate, an aromatic polyether sulfone and polybudadiene, and said thermoplastic plastic ha one or more of the following properties: a) a variation in thickness not exceeding 0....

이 특허를 인용한 특허 피인용횟수: 16

  1. Lilly, Kenneth Lee. Coated thermoplastic film substrate. USP2005026855415.
  2. Ulcej John A.. Extrusion die membrane. USP2001036206680.
  3. John A. Ulcej. Extrusion die membrane assembly. USP2002036352424.
  4. Bourne, Robert Allan; Coyle, Dennis Joseph; Lilly, Kenneth L.; Morrow, Robert; Schenk, Brian Scott; Wildeman, Russell Wayne. Film extrusion process for producing thermoplastic film. USP2004086773649.
  5. Harry G. Lippert ; Vernon J. Krupa ; John A. Ulcej. Flow control device and apparatus for mounting same. USP2002046367776.
  6. Lippert Harry G. ; Krupa Vernon J. ; Ulcej John A.. Flow control device and apparatus for mounting same. USP2000086109592.
  7. Wada, Kazuhito; Shimamoto, Yukihiro. Method for producing vinylidene fluoride resin transparent film. USP2012118303875.
  8. Stein Alan Daniel ; Hallden-Abberton Michael Paul ; Liss Audrey Brenda ; Fields Steven David. Plastic substrates for electronic display applications. USP2001116322860.
  9. Daecher Jeffrey Lawrence ; Fields Steven David ; Khanarian Garo ; Stein Alan Daniel. Process and apparatus for forming plastic sheet. USP2001026183829.
  10. Daecher Jeffrey Lawrence ; Fields Steven David ; Yatabe Toshiaki,JPX ; Yahata Kazuo,JPX. Process and apparatus for forming plastic sheet. USP2001086270863.
  11. Fields Steven David ; Galione James Ralph. Process and apparatus for forming plastic sheet. USP2001056224805.
  12. Fields Steven David ; Khanarian Garo ; Daecher Jeffrey Lawrence ; Stein Alan Daniel. Process and apparatus for forming plastic sheet. USP2001086280808.
  13. Jeffrey Lawrence Daecher ; Steven David Fields ; Garo Khanarian ; Alan Daniel Stein. Process and apparatus for forming plastic sheet. USP2002096451403.
  14. Jeffrey Lawrence Daecher ; Steven David Fields ; Garo Khanarian ; Alan Daniel Stein. Process and apparatus for forming plastic sheet. USP2002106472031.
  15. Steven David Fields ; James Ralph Galione. Process and apparatus for forming plastic sheet. USP2002116482502.
  16. Yokley, Edward M.; Obeng, Yaw S.. Substrate polishing device and method. USP2004026688956.