EP 0675803 A4 19950810 - BIAXIALLY ORIENTED COPOLYESTER/POLYOLEFIN BI- OR TRILAYER FILM AND METHOD FOR MAKING THE SAME.
Title (en)
BIAXIALLY ORIENTED COPOLYESTER/POLYOLEFIN BI- OR TRILAYER FILM AND METHOD FOR MAKING THE SAME.
Title (de)
BIOXIAL ORIENTIERTER ZWEI- ODER DREISCHICHTIGER FILM AUS COPOLYESTER/POLYOLEFIN UND VERFAHREN ZU SEINER HERSTELLUNG.
Title (fr)
FILM A DOUBLE OU TRIPLE COUCHE DE COPOLYESTER/POLYOLEFINE ORIENTE BIAXIALEMENT ET SON PROCEDE DE FABRICATION.
Publication
Application
Priority
US 9210690 W 19921209
Abstract (en)
[origin: WO9413475A1] Disclosed herein is a bi- or trilayer film comprising one or two biaxially oriented copolyester film layers and a polyolefin layer bonded to one surface of said biaxially oriented copolyester film layer(s), wherein the copolyester is PENBB. The laminated film may also include a metal layer bonded to the copolyester surface opposite the surface bonded to the polyolefin. The metal layer preferably has a thickness of 0.03 to 0.3 mu m. The polyolefin preferably has a thickness from about 5 to about 30 mu m and a birefringence of 0 to about 0.02. PENBB as mentioned herein is a copolyester containing units of formula (I). Such films are useful in capacitor applications.
IPC 1-7
IPC 8 full level
B32B 15/09 (2006.01); B32B 15/08 (2006.01); B32B 27/08 (2006.01); B32B 27/32 (2006.01); B32B 27/36 (2006.01); H01G 4/18 (2006.01)
CPC (source: EP US)
B32B 27/08 (2013.01 - EP US); B32B 27/32 (2013.01 - US); B32B 27/36 (2013.01 - US); H01G 4/18 (2013.01 - EP); B32B 2255/10 (2013.01 - US); B32B 2255/205 (2013.01 - US); B32B 2307/518 (2013.01 - US); B32B 2309/105 (2013.01 - US)
Citation (search report)
- [A] EP 0492582 A2 19920701 - DONEGANI GUIDO IST [IT]
- [DA] EP 0153081 A2 19850828 - TORAY INDUSTRIES [JP]
- [A] DATABASE WPI Section Ch Week 9050, Derwent World Patents Index; Class A92, AN 90-372934
- [PA] DATABASE WPI Section Ch Week 9338, Derwent World Patents Index; Class A18, AN 93-299334
- See references of WO 9413475A1
Designated contracting state (EPC)
DE FR GB IT LU NL
DOCDB simple family (publication)
WO 9413475 A1 19940623; EP 0675803 A1 19951011; EP 0675803 A4 19950810; JP H08504381 A 19960514
DOCDB simple family (application)
US 9210690 W 19921209; EP 93901397 A 19921209; JP 51408094 A 19921209