Process of super-imitation polyester cotton

The invention relates to the technical field of polyester fiber production, in particular to a process technology of super-imitation polyester cotton. The process technology comprises the following steps of pre-crystallization and drying, melt extrusion, spinning, preparation of super-imitation cotton and polyester POY (pre-oriented yarn) and preparation of super-imitation cotton and polyester DTY (draw textured yarn). The fine denier treatment of single fiber not only enables the bulkiness of the fiber to be better, but also improves the capillary wicking effect due to the increase of the specific surface area of the fiber, is beneficial to increasing the moisture absorption speed, and enables a super-imitation polyester and cotton fabric to achieve the softness and moisture absorption equivalent to those of pure cotton. The denier per filament (dpf) of the single fiber is less than 0.8 dtex. 本发明涉及聚酯纤维生产技术领域，特别是涉及一种涤纶超仿棉的工艺技术。按以下步骤进行：预结晶干燥→熔融挤压→纺丝→超仿棉涤纶预取向丝POY→到超仿棉涤纶DTY。单纤维细旦化不仅使得纤维的蓬松性更好，还由于纤维比表面积的增加而提高了毛细芯