EP 0000242 B1 19810715 - PROCESS AND APPARATUS FOR CONTINUOUSLY STRETCHING A SYNTHETIC POLYMERIC FILM IN THE LONGITUDINAL DIRECTION.
Title (en)
PROCESS AND APPARATUS FOR CONTINUOUSLY STRETCHING A SYNTHETIC POLYMERIC FILM IN THE LONGITUDINAL DIRECTION.
Publication
Application
Priority
GB 2583977 A 19770621
Abstract (en)
[origin: EP0000242A1] Polymeric films such as films of polyethylene terephtalate, are stretched with low "neck-in" over a short span defined by two counter-rotating rolls (26,27), the first of which (26) has a matt surface, i.e.a. mattness represented by a Centre Line Average. (Brit.Standard 1134; 1950) of at least 5 microinch to prevent sticking at the stretching temperatures.
IPC 1-7
IPC 8 full level
B29C 55/00 (2006.01); B29C 55/04 (2006.01); B29C 49/00 (2006.01)
CPC (source: EP)
B29C 55/04 (2013.01); B29K 2067/00 (2013.01)
Designated contracting state (EPC)
BE DE FR GB LU NL
DOCDB simple family (publication)
EP 0000242 A1 19790110; EP 0000242 B1 19810715; AU 3694978 A 19791213; AU 519259 B2 19811119; BE 868326 R 19781221; DE 2860834 D1 19811022; FR 2395131 A2 19790119; FR 2395131 B2 19801107; GB 1594493 A 19810730; IT 1108837 B 19851209; IT 7824703 A0 19780619; JP S548673 A 19790123; LU 79850 A1 19790906
DOCDB simple family (application)
EP 78300015 A 19780605; AU 3694978 A 19780608; BE 188739 A 19780621; DE 2860834 T 19780605; FR 7818382 A 19780620; GB 2583977 A 19770621; IT 2470378 A 19780619; JP 7432578 A 19780621; LU 79850 A 19780620