Polyester poem yarn and its manufacturing method

摘要

The present invention relates to a polyester posture yarn and a method for manufacturing the same, in the production of polyester fibers by the poy-DRAW TWIST method spinning yarn spinning at 150-350 and crystallinity of 5-15% Manufacturing method characterized in that it is drawn with undrawn and drawn at a magnification of 1.4 to 1.6 at a drawing temperature of 75 to 100 ° C. A polyester posture yarn having a length ratio of 30: 1 to 70: 1 and a fiber cross-sectional area of the thick portion of 1.15 or less with respect to the fiber cross-sectional area of the fine powder.