| 摘要 |
PURPOSE:Polyester is melt-extruded into fibers, solidified by cooling and treated with a specific finishing oil, before the fibers come into the roller regulating the yarn speed, then the yarn is wound up over a certain speed, thus giving a yarn with reduced yarn breakage and fluffs. CONSTITUTION:Polyester is melt-extruded into fibers and the fibers are solidified by cooling with air. Then, the yarn is treated with a finishing oil containing more than 10wt% of at least one of copolymers represented by the formula [R1 is 1-6C hydrocarbon, R2 is methyl, ethyl; X and Y are 0 or positive integers satisfying the equation Z(58X+44Y)>=1,000: Z is integer 1-6 corresponding to the valency of R1] by means of a metric pump by 0.2-2.0wt% based on the yarn weight. Then, the yarn is take up at a speed over 2,500m/min to give the objective polyester yarn. |
