MANUFACTURING METHOD OF POLYESTER FALSE TWIST YARN USING POLYESTER UNDRAWN YARN

摘要

PURPOSE: A manufacturing method of polyester false twist yarn is characterized by cool-drawing and false-twisting polyester undrawn yarn at low speed. The polyester false twist yarn maintains excellent elongation elasticity and has excellent crimp fastness and elasticity. CONSTITUTION: Polyester false twist yarn is obtained by drawing polyester undrawn yarn at 20-50deg.C at 150-200m/min of drawing velocity with a draw winder. The polyester false twist yarn is manufactured by using polyethylene terephthalate or polytrimethylene terephthalate. The elongation elasticity is 40%.