Superfine flat terylene low elater and technique for producing the same

Abstract

The invention relates to a superfine, flat, terylene and low-stretch yarn and a production technology thereof. The invention is characterized in that the superfine, flat, terylene and low-stretch yarn has the specification of (55-444)dtex / (144-576)f, the single yarn density is smaller than or equal to 0.58dtex, and the cross section shape of the yarn is a rectangle with a length-width ratio which is larger than or equal to 2. The invention adopts a fused mass direct spinning production mode and a two-step POY-DTY method production line for production; an outer ring blowing cooling mode is adopted, and a spinneret plate with a straight spinneret orifice is used in a spinning working procedure, and the spinneret plate has a high length-width ratio which is larger than or equal to 2; a pentaerythritol additive capable of changing the rheological property and the spinnability of fused mass is added in a polyester working procedure; and integrative production measures, such as a special extending deformation technology, and the like, are adopted in a false twisting working procedure. Fabrics woven by the superfine, flat, terylene and low-stretch yarn have the advantages of soft feeling, good moisture absorption and ventilation, elegant luster, good hair uprightness, easy dying, and the like as well as higher product added value.

Description

technical field [0001] The invention relates to a synthetic fiber, in particular to a superfine polyester low-stretch yarn with a flat cross section and a production process thereof, belonging to the technical field of chemical fiber production. Background technique [0002] As one of the three main fibers in synthetic fibers, polyester is widely used in clothing fabrics and other non-clothing fields because of its excellent physical and chemical properties. Since its inception, polyester products have also been used by downstream users as the main textile raw material to weave various textiles due to their good drape, high strength, crispness and resistance to wrinkling. The cross-sectional shape of the earliest produced polyester is mainly circular. With the change of people's requirements for textile products, polyester products imitating the cross-section of natural fibers have also appeared. The cross-sectional shape is generally irregular zigzag, flat The horseshoe sh...

AI Technical Summary

Problems solved by technology

When this type of POY is used to process and produce DTY varieties with low monofilament linear density, the production stability is poor, resulting in poor dyeing uniformity of the product, high production cost, and the product cannot be mass-produced in the end, and the downstream textile fabric replacement speed is slow

[0005] In particular, since the production of special-shaped fibers such as flat filaments is difficult, at this stage, most of its varieties are limited to the range of high single-filament linear density. Even if the ultra-fine polyester filament varieties with dpf≤0.55dtex use a circular cross-section spinneret Production, and its production status is also difficult to control, let alone ultra-fine special-shaped polyester filament

In the field of melt direct spinning production technology, there are no relevant reports on mass production of special-shaped ultrafine polyester filaments, and experimental production may be rare

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