Method for preparing DTY (drawn textured yarn) polyester super-bright flat yarn by POY (polyester pre-oriented yarn) polyester yarn

Abstract

The invention discloses a method for preparing a DTY (drawn textured yarn) polyester super-bright flat yarn by a POY (polyester pre-oriented yarn) polyester yarn, belonging to the field of knitting / spinning raw material processing technologies. According to the method, the POY yarn is rolled after passing through a first roller, an upper heating box, a cooling plate, a false twister, a second roller, a lower heating box and a third roller, and then the DTY polyester super-bright flat yarn is obtained, wherenin the linear velocity of the first roller is 410-450m / min; the linear velocity of the second roller is 690-720m / min; a temperature of the upper heating box is 193-196 DEG C; and a temperature of the lower heating box is 135-145 DEG C. The method has the advantages that the processing steps are simple and the industrial large-scale production can be satisfied; and as the linear velocities of the first and second rollers as well as the temperatures of the upper and lower heating boxes are selected reasonably, fleece-faced fabrics processed from the obtained DTY polyester super-bright flat yarn has smooth and soft handfeel as well as fluffy and vivid texture, which is markedly superior to that of the prior art.

Description

technical field [0001] The invention belongs to the technical field of needle textile raw material processing, and in particular relates to a method for preparing DTY polyester bright flat yarn from POY polyester yarn. Background technique [0002] In recent years, people have become more and more particular about the style of polyester suede fabrics, which are manifested in the following two aspects: one is touch, that is, smooth and soft hand feeling is required; . However, in the prior art, the fabrics processed by common DTY polyester low elastic yarn are often difficult to meet the requirements. [0003] In order to make the suede fabric processed from polyester filaments have the above-mentioned effects as much as possible, the industry usually focuses on innovative ideas in the finishing process, but practice has proved that it can only achieve a temporary effect, and cannot maintain the aforementioned tactile and visual effects for a long time. [0004] Chinese Inv...

AI Technical Summary

Problems solved by technology

However, the process steps of this patent application scheme are cumbersome, and it is difficult to adapt to the requirements of industrialized scale-up production, so it is necessary to improve

In particular, in the published patents and non-patent literature, there is no technical inspiration for processing POY polyester yarn into DTY polyester bright flat yarn. For this reason, the applicant has made useful explorations, and the technology to be introduced below It is against this background that the program