Manufacturing Technology of Polyester Glossy Shaped Semi-elastic Drawn Filament

Abstract

The invention relates to a manufacturing technology of a dacron glossy special-shaped semi-elastic drafting long wire. The manufacturing technology includes special designs of polyester raw material low-shrink pre-treatment, high-modulus bending glossy melt treatment, melt multi-stage directly-melting spinning, filter screen spinning cooling oiling semi-elastic drawing treatment and includes optimization of relative parameters to form the manufacturing technology of the dacron glossy special-shaped semi-elastic drafting long wire. By means of the manufacturing technology, defects of poor glossiness and low elastic drafting performance in the prior art are overcome so that the long wire is more excellent in photo-refraction, photo-reflection, thermal shrinkage, semi-elasticity, drafting performance, elastic texture, glossiness and low elasticity.

Description

technical field [0001] The invention relates to the technical field of drawing filaments, in particular to a manufacturing process of special-shaped semi-elastic drawing filaments, and more specifically to a manufacturing process of polyester lustrous special-shaped semi-elastic drawing filaments. Background technique [0002] Ultra-coarse denier bright polyester drawn yarn is made of bright direct spinning melt made of purified terephthalic acid (referred to as PTA) and ethylene glycol (referred to as MEG) as raw material, through spinning, drawing and other processes. production. At present, the linear density of polyester drawn yarn in the chemical fiber industry can only reach 300 denier at its thickest. The production process is as follows: the bright direct spinning melt made of PTA and MEG polymerization is used as raw material, and the melt is conveyed through the booster pump. After pressurized, it is sent to the spinning box, and is accurately metered by the meter...

AI Technical Summary

Problems solved by technology

The disadvantages of the above preparation method are: in the production process, the three-lobed special-shaped cross-section optical fiber line is merged in the later stage, so that the cohesion between the monofilaments is lacking, and it is easy to bifurcate during the subsequent use; the cohesion between the monofilaments is uneven, and when stretching The tension between the monofilaments is different, and the three-lobed irregular shape is easy to produce uneven clustering, and the monofilaments break to form wool, which affects the subsequent weaving and the flatness of the cloth surface, and cannot meet the post-processing requirements of coarse denier fibers; and conventional spinning The thickest polyester drawn yarn obtained from silk can only reach 300 denier, and the application range is limited

However, with the progress of world science and technology and the development of world industry, polyester fiber cannot fully meet people's requirements in terms of performance and function.