PRODUCTION OF POLYESTER YARN FOR NON-SIZED WEAVING

摘要

PURPOSE:To obtain warp capable of weaving in high-speed WJL without sizing by subjecting normal polyester to melt spinning, supplying oil having specific composition to resultant yarn, performing drawing and confounding treatment and obtaining drawn yarn having excellent smoothness. CONSTITUTION:(A) 20-50wt.% polyether compound obtained by random polymerization of propylene oxide and ethylene oxide in a weight ratio of 60:40-20:80 and having 4000-10000 molecular weight is mixed with (B) 20-40wt.% fatty ester expressed by the formula R1COOR2 (R1 is 7-20C alkyl or alkenyl; R2 is 5-18C alkyl or alkenyl), (C) 10-30wt.% nonionic surfactant expressed by formula I-formula IV (R3-R8 are 8-18C alkyl or alkenyl; n is 4-20) and (D) antistatic agent (e.g. Na salt of sulfonate) to obtain an oil. Next, said oil is emulsified and supplied to polyester undrawn yarn obtained by melt spinning with an attaching amount of 0.5-1.3%, then the yarn is subjected to drawing and confounding treatment to afford polyester drawn yarn having excellent smoothness, coherence and antistatic properties without generating fuzz or yarn breaking.