Manufacturing process of 20 D serial polyester fully-drawn yarns through direct spinning and circular blowing

Abstract

The invention relates to a manufacturing process of 20 D serial polyester fully-drawn yarns through direct spinning and circular blowing. Through special design on the process steps of spinning raw material pretreatment, preorientation yarn melt shrinkage processing and fully-drawn yarn direct spinning and circular blowing cooling processing and special optimization of related parameters, damage, caused by acid, alkali and chemical processing, to the fiber elasticity in the prior art is avoided, so that the effect that on the premise of achieving fully-drawn performance, the polyester yarns reach the effect of hydrophilia super-imitation natural fiber without acid, alkali and chemical processing.

Description

technical field

[0001] The invention relates to the technical field of drafted yarns, in particular to a production process of direct-spun ring blown 20D series polyester full-drawn yarns. Background technique

[0002] In recent years, my country's polyester industry has developed rapidly. The output of polyester fiber has grown from 5.165 million tons at the beginning of 2000 to 12.4 million tons at the end of 2005, with an average annual growth rate of more than 20%. The output has doubled compared with five years ago. many. Polyester has become the synthetic fiber variety with the largest output among chemical fibers, and is widely used in various aspects of national economy and people's livelihood such as clothing, decoration, home textiles, industrial textiles, national defense, and industrial engineering. In the next five years, it will continue to grow rapidly. However, as a textile material, polyester fiber also has obvious disadvantages. Therefore, choosing scien...