Production method for chemical fiber and polyester composite yarns

Abstract

The invention relates to a production method for chemical fiber and polyester composite yarns, in particular to a method for producing chemical fiber and polyester composite yarns of partially oriented yarns (POY) and fully drawn yarns (FDY) by one kind of equipment through a one-step method. The POY and the FDY are subjected to composite spinning on the same winding frame, and the spinning process can simultaneously meet process flows required by producing the two kinds of yarns; the FDY and the POY enter a draft area from the same side of a first pair of drawing rollers, wherein the FDY pass through the first pair of drawing rollers consisting of a large-diameter heat roller and a large-diameter heat roller, and, together with the POY, pass through a yarn guide roller below the first pair of drawing rollers, and the FDY and the POY are combined and compounded into a bundle of yarns on the yarn guide roller; and the composite yarn bundle passes through a second pair of drawing rollers consisting of a large-diameter heat roller and a non-heating small-diameter separator roller to form the composite yarns. The effects of saving a production space and saving energy are obvious, the processed fiber composite yarns are reliable in quality, stable in process and high in cohesiveness and the dying property is superior to that of the conventional product.

Description

Technical field [0001] The invention relates to a production method of chemical fiber polyester composite yarn, in particular to a production method of chemical fiber polyester composite yarn which can produce POY and FDY composite yarn by adopting one equipment and one-step method. Background technique [0002] Chemical fiber polyester composite yarn is a composite yarn made of polyester pre-oriented yarn (Partially Oriented Yarns, abbreviated as POY) and polyester fully drawn yarn (Fully Drawn Yarn, abbreviated as FDY) produced by one-step spinning method. [0003] The method of POY spinning is usually: after the polyester filament is cooled and oiled, it passes through a pair of godet discs, and then reaches the winding machine to be wound to form a silk cake. The method of FDY spinning is usually: after the polyester filament is cooled and oiled, it first passes through the first pair of drafting rollers, then is drawn by the second pair of drafting rollers, and then rea...

AI Technical Summary

Problems solved by technology

In the past, the common process of chemical fiber spinning was to spin POY and FDY two kinds of filaments separately in the first step, and then perform paralleling on another machine in the second step. Three different equipments were needed to produce composite filaments, and the production efficiency was low. , The cycle is too long, which increases the production cost of composite yarn products, and the quality and cohesion of composite yarn are unstable

Images