THE MANUFACTURING METHOD OF THERMOPLASTIC ESTER ELASTIC FILAMENT

摘要

The present invention relates to a method of manufacturing an ester-based thermoplastic elastic fiber, and more particularly, a polyether ester elastic fiber having an elastic recovery rate of 80% or more at 200% elongation is produced by melting and spinning a polyether ester block copolymer. It relates to a method for producing an ester-based thermoplastic elastic fiber Drying the thermoplastic elastic resin chip with a chip dryer to maintain a moisture content of 100 ppm or less; Melting the thermoplastic elastic resin chip dried by the chip dryer and ejecting it under pressure with an extruder in the form of a molten polymer; Spinning the molten polymer discharged under pressure by the extruder in the form of a plurality of filament yarns through a spinneret having a plurality of spinning holes; Forming a fiber yarn by twisting a plurality of filament yarns cooled while being spun through the spinneret with an air jet twist nozzle of a spinning machine; Winding the fiber yarns bonded by the spinning machine at a speed of 300 to 400 m/min in a first godet roller; Winding the fiber yarn wound by the first godet roller in a second godet roller at a speed of 700 to 900 m/min; And winding the fiber yarn wound by the second godet roller at a speed of 600 to 700 m/min in a winder.