公开(公告)号：EP2710175A1

公开(公告)日：2014-03-26

申请号：EP12720903.9

申请日：2012-05-16

申请人： Api Institute

发明人： KRINS, Bastiaan ,  VEURINK, Jannes ,  OERLEMANS, Petrus, Joannes, Maria

IPC分类号： D01F6/62 ,  D01D5/16 ,  D01D5/088 ,  D02G3/48 ,  B60C9/00

CPC分类号： D02G3/367 ,  B60C9/0042 ,  D01D5/088 ,  D01D5/16 ,  D01F6/62 ,  D02G3/48 ,  D10B2331/04

摘要： A continuous spin-draw-winding process to prepare a drawn polyester yarn suitable for use in high-speed tires and run-flat tires having high energy to break in combination with a good dimensional stability, comprising extruding molten polyester through spinning holes in a spinneret to form a bundle of molten spun filaments, solidifying the spun filaments by a gaseous cooling medium, fixing the spinning speed of the solidified filaments at a first godet in the range of 4050 to 5000 m/min, drawing the solidified filaments to a winding speed in the range of 6800 to 8000 m/min to form drawn filaments. The drawn polyester yarn has a high amorphous orientation distribution, a high crystallinity and a coarse structure. Dipped cords comprising such polyester drawn yarns exhibit excellent dimensional stability at higher temperatures.