Production technology of siro compact spinning covering yarn

Abstract

The invention relates to the production technology of a siro compact spinning covering yarn. A traditional compact spinning negative pressure pipe negative pressure groove is designed in an I-shaped straight groove mode, a cotton net is too narrow and the yarn-leakage phenomenon exists, meanwhile, the yarn hairiness is serious, evenness is poor, strength is low, fluctuation is large, and wool particles / neps are prone to being formed during a post processing process. The production technology of the siro compact spinning covering yarn enables the negative pressure pipe negative pressure groove to be designed into a V-shaped groove; meanwhile, the siro spinning technology is used, two coarse yarns are fed at the same time at one spindle position at a certain interval, the two coarse yarns are dragged respectively, an elastic filament is arranged between the two coarse filament, two fiber beams are formed in a negative pressure zone formed by the V-shaped groove after the two coarse yarns are dragged, the filament is guided to be arranged between the two fiber beams from the position behind a clustering front leather roller, and therefore the filament can be effectively wrapped, and a good covering yarn product can be manufactured.

Description

technical field [0001] The invention relates to a weaving technology, in particular to a production process of a Siro compact spinning core-spun yarn. Background technique [0002] The traditional core yarn device is a production process that can twist a roving sliver with elastic filaments in the form of ring spinning. The negative pressure groove of the traditional compact spinning negative pressure tube adopts the "I" type straight groove design, and the "I" type structure is only suitable for spinning a single roving sliver. The traditional core-spun yarn production products have the following quality problems: [0003] 1. The cotton net will be too narrow, which is not good for wrapping the filaments, and the wrapping will not be good at all, and there will be silky phenomenon. At the same time, the yarn hairiness will be serious, the evenness will be poor, the strength will be low and the fluctuation will be large. [0004] 2. Since the core yarn of ordinary core-spun...

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Problems solved by technology

[0003] 1. The cotton net will be too narrow, which is unfavorable for covering the filaments, and the wrapping is not good at all, and there will be silk phenomenon. At the same time, the yarn hairiness is serious, the evenness is poor, the strength is low and the fluctuation is large

[0004] 2. Since the core yarn of ordinary core-spun yarn must be introduced after the front drafting top roller, the number of the core yarn is much larger than that of the cotton fiber, which interferes with the grip of the cotton fiber by the front drafting top roller, and is prone to hardening If the ends are short or thick, it will not only increase the number of broken ends but also deteriorate the evenness. Because the ring spinning has no accumulation performance, the hairiness of the yarn is large, and it is easy to form hairs / neps in the post-processing process, and the cotton web is too large after walking out of the front drafting roller. Wide, the fibers on both sides of the cotton bundle are easily sucked by the flute with the roller, forming details, affecting the dryness and strength

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