EP 0224306 B1 19901031 - PROCESS AND APPARATUS FOR SPIN-STRETCHING POLYESTER FIBERS
Title (en)
PROCESS AND APPARATUS FOR SPIN-STRETCHING POLYESTER FIBERS
Publication
Application
Priority
CH 501485 A 19851125
Abstract (en)
[origin: EP0224306A2] 1. A process for the single-stage spin-drawing of two or more polyester filaments (3) having an intrinsic viscosity (IV) of from 0.58 to 0.95 by passing the polyester filaments (3) between a feed godet (6) combined with at least one separating roller (7) at a speed of 700-3,000 m/min and a draw take-off godet (10) combined with a separating roller (11) at a final speed of from 3,000 to 6,000 m/min over a draw pin (8) to draw them and then winding them up, characterized in that the polyester filaments (3) are drawn by guiding them around an unheated draw pin (8) with a wrap angle (alpha) of more than 90 degrees and less than 360 degrees.
IPC 1-7
IPC 8 full level
CPC (source: EP)
Designated contracting state (EPC)
CH DE ES FR GB IT LI NL
DOCDB simple family (publication)
EP 0224306 A2 19870603; EP 0224306 A3 19880302; EP 0224306 B1 19901031; DE 3675343 D1 19901206; ES 2019285 B3 19910616
DOCDB simple family (application)
EP 86202042 A 19861118; DE 3675343 T 19861118; ES 86202042 T 19861118