Production process of T800 composite yarn

Abstract

The invention discloses a production process of T800 composite yarn. The process comprises the following steps of (a) crystallizing and drying PET slices and PBT slices, performing melting through a screw extruder to obtain a PET spinning melt and a PBT spinning melt, then performing spinning by adopting a bi-component composite spinning box, and carrying out side blowing cooling, oiling, drafting and winding to obtain composite POY; and (b) enabling the composite POY to sequentially pass through a raw yarn frame, a roller I, a deformation hot box, a cooling plate, a false twister, a roller II, a network nozzle, an auxiliary roller, a setting hot box and a feeding roller, performing oiling by an oiling device, and finally performing drafting and winding to obtain the T800 composite yarn. By means of the process method, the composite yarn with the excellent curling performance can be successfully prepared, and the long-term elasticity style of a fabric is achieved.

Description

technical field [0001] The invention relates to the technical field of composite yarn preparation, in particular to a production process of T800 composite yarn. Background technique [0002] In bicomponent composite fibers, two components with different shrinkage rates generally form a straight interface, while bending occurs in the normal direction of the interface. The conventional two-component composite fiber has a short interface length and a long interface normal length in the cross section, so that the flexural section modulus of the fiber is large when the fiber is bent, so the fiber curl radius is large, and the crimping performance of the fiber is not ideal. After being made into a fabric, the elasticity of DTY silk gradually decreases or even disappears as time goes by, resulting in a decrease or even loss of the fabric's elasticity, and the fabric's elastic style gradually disappears. Contents of the invention [0003] The purpose of the present invention is t...

AI Technical Summary

Problems solved by technology

The conventional two-component composite fiber has a short interface length and a long interface normal length in the cross section, so that the flexural section modulus of the fiber is large when the fiber is bent, so the fiber curl radius is large, and the crimping performance of the fiber is not ideal. After being made into fabric, the elasticity of DTY silk will gradually decrease or even disappear as time goes by, resulting in the decrease or even loss of fabric elasticity, and the elastic style of the fabric will gradually disappear.

Images