Direct-spun black yarn FDY processing process based on master batch injection melt

Abstract

The invention relates to a direct-spun black yarn FDY (full drawn yarn) processing process based on master batch injection melt, which sequentially comprises the steps of: PET (polyethylene terephthalate) melt preparation, black master batch preparation, sufficient mixing of melt and spinning. According to the invention, the technical defects in the prior art of yarn floating during spinning, many broken ends, easiness in web yarn generation, large chroma difference generated while stopping spinning, nonuniform melt blending and the like are solved, and the benefits of saving subsequent dyeing and other aftertreatment processes, saving energy, reducing white slab transportation and fusion processes, saving a great deal energy, and realizing large-scale production of FDY black yarn with no filament breakage, low elasticity and excellent quality are achieved.

Description

technical field [0001] The invention belongs to the technical field of chemical fiber processing, in particular to the field of processing of direct-spun black silk FDY, in particular to a processing technology of direct-spun black silk FDY based on masterbatch injection melt. Background technique [0002] Polyester fine denier FDY black silk is a special modified fiber. This variety is made by adding color masterbatch on the basis of the original FDY white silk, and processed by special technology, which can save the dyeing process. At present, the output of the chemical fiber market has risen sharply, resulting in an increasingly prominent situation of oversupply of polyester products. In addition, the country's requirements for environmental protection are getting higher and higher, and the competition for chemical fiber products in the domestic sales market is becoming more and more fierce. To achieve further development under the current situation, it is necessary to d...

AI Technical Summary

Problems solved by technology

[0021] The object of the present invention is to provide a direct-spun black silk FDY processing technology based on masterbatch injection melt for related improvement process steps and optimization of related best parameters, so as to obtain polyester low-stretch yarn with better quality and no need for dyeing, and can be used on a large scale The FDY black silk produced; solves the technical defects in the prior art such as spinning yarn drifting, many broken ends, easy to produce spider webs, large chromaticity difference when spinning stops, and uneven melt mixing, etc., and achieves saving Subsequent dyeing and other post-processing technology, energy saving, can reduce the transportation of white slices, melting process, save a lot of energy, can realize large-scale production, no broken yarn, low elasticity and better quality. The beneficial advantages of FDY black yarn