THERMAL-WET COMFORTABLE POLYESTER FIBER FDY YARN FOR SUMMER USE AND PREPARATION METHOD THEREFOR

摘要

A type of thermal-moisture comfortable polyester FDY for summer use and a preparation method thereof are disclosed. The FDY is made of matting agents dispersed polyester via the steps of spinning melt metering, extruding via the compositional spinneret, cooling, oiling, drawing, heat setting and winding. The woven fabrics manufactured with the FDY possess a wicking height and an evaporation rate of no less than 135mm and 0.22g/h, respectively. The compositional spinneret is simultaneously provided with cruciform orifices and circular orifices, and the length ratio of cruciform orifice to circular orifice is equal to the product of their equivalent diameter ratio and a coefficient K, here equivalent diameter is the ratio of orifice cross-section area to its circumference and K ranges from 0.97 to 1.03, and the oiling involves the oiling agent containing 67.30-85.58wt% of crown ether. The program presented in this invention is of a convenient technique, and the thermal-moisture comfort performance of the desired FDY is fairly considerable and widely applicable.