A process of preparing the crimped polyester yarn used for marker pen nip

摘要

The present invention relates to a method for producing a polyester crimping work for a marker pen nip, wherein the polyester filament is heat-treated and pressurized (loaded) while passing through a stuffing box to express the crimp and then stretched to 1.10 or less to obtain a branching effect. It is characterized by stretching at magnification. The heat treatment temperature in the stuffing box is 140 ~ 220 ℃ and the load is 20 ~ 90g / ㎠. The polyester crimping fabricated by the method of the present invention has a dry heat shrinkage (200 ° C.) of less than 20%, no torque, and excellent dispersion effect between monofilaments, thereby greatly improving the manufacturing processability of the marker pen nip.