Preparation technology of POY and FDY combined yarn

Abstract

The invention discloses a preparation technology of a POY and FDY combined yarn. The preparation technology comprises the following steps of 1, selection of raw materials; 2, preparation of cabled folded yarn; 3, air deformation; 4, second cabling; 5, twisting and setting; 6, plying, wherein in the step 2, bonding points are formed on intermingled yarn by using ultrasonic waves; in the step 5, during twisting and setting, the intermingled yarn and the cabled folded yarn are twisted, subjected to dry heat setting and untwisted to form real-twisting and false-twisting yarn; in the step 6, duringplying, the real-twisting and false-twisting yarn and second-twisting yarn are doubled to prepare the combined yarn. According to the preparation technology of the POY and FDY combined yarn, processing is simple, the cost is easy to control, small-scale production can be conducted, and requirements of different customer groups can be met. The POY and FDY which are equal in fineness can be adoptedfor mixed preparation, the combined yarns different in fineness can be prepared, and therefore, the production requirements of different fabrics can be met.

Description

technical field [0001] The invention relates to a chemical fiber preparation process, in particular to a preparation process of POY and FDY mixed fiber yarn. Background technique [0002] With the continuous improvement of human production quality, the high hand feeling of plied fiber fabrics is required to be promoted to an important position. In the preparation of washed fleece fabrics, strong twisted elastic yarns are usually interwoven with multiple filaments, and after alkali weight reduction, creping and washing, the surface of the fabric is used to form a layer of fine fluff, and the feel of the fabric is excellent. The appearance is similar to real silk fabric, which is an ideal raw material for imitation silk. The difference in orientation and crystallinity of FDY and POY molecules can be used through POY and FDY parallel wires, so that after alkali reduction treatment, the monofilaments in the POY part break and can form surface fluff, so the mixed fiber of POY an...

AI Technical Summary

Problems solved by technology

However, the existing POY and FDY blended yarns are relatively single, and the production of crepe-like imitation silk fabrics cannot meet the ever-changing customer needs in the highlands.