Composite covered spandex yarns and preparation method thereof

A technology of covering yarn and spandex, which is applied in the direction of yarn, textile and paper making, to achieve the effect of shortening the balance time

Inactive Publication Date: 2012-10-17
JIANGSU JIADE FIBER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the covered yarn is only coated with a layer of silk on the outside of the spandex core silk, and it is the covered yarn of the same fiber. Generally, it can only be used as socks and underwear, and the scope of use has certain limitations.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Composite covered spandex yarns and preparation method thereof

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Embodiment Construction

[0015] Such as figure 1 As shown, the present invention includes a spandex core filament 1 and a yarn 2 wrapped outside the spandex core filament 1 . The yarn 2 wrapped outside the spandex core yarn is composed of chemical fiber filaments 21 and natural fibers 22 after twisting, and the twist is 80 twists / meter.

[0016] The preparation method of spandex composite covered yarn comprises the following steps:

[0017] (1) Paralleling: Parallel the two fiber yarns (20+ Nylon 30 / Cotton 80 varieties) on a draft twisting machine and apply weak twisting, the speed is 500 m / min, and the twist is 80 twists / m;

[0018] (2) Coating: the above-mentioned weakly twisted yarn is coated on 20D spandex yarn, the spindle speed is 12000 rpm, the twist is 600 twists / m, and the draft is 3.0 times;

[0019] (3) Heat setting: put the covered yarn obtained in step (2) in a vacuum pre-shrinking tank, close the vacuum pre-shrinking tank and start vacuuming, drop the air pressure in the tank to 120mmH...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention discloses composite covered spandex yarns and a preparation method thereof. Each composite covered spandex yarn comprises a spandex core filament and a yarn which covers the spandex core filament, wherein the yarn which covers the spandex core filament formed by twisting two kinds of chemical filaments or formed by twisting a chemical filament and a natural fiber. The preparation method comprises the following steps of: doubling and softly twisting two kinds of fiber yarns by using a draw twister, wherein the speed is 450 to 550 meters per minute, and the twist degree is 70 to 90 twists per meter; covering 20D spandex filaments by using the softly twisted yarns, wherein the spindle speed is 1,000 to 1,300 revolutions per minute, the twist degree is 500 to 700 twists per meter, and the drafting ratio is more than three times; and performing heat setting at the temperature of 40 to 60 DEG C and 65 to 75 DEG C to ensure tension balance inside and outside a yarn spool.

Description

technical field [0001] The invention relates to the field of textiles, in particular to spandex composite covered yarn and a preparation method thereof. Background technique [0002] Spandex composite covered yarn is made of spandex as the core yarn and coated with one or two layers of fiber materials on the outside of the spandex core yarn. Currently, the spandex composite covered yarns on the market are generally covered with only one layer of fiber materials, such as nylon or polyester with chemical fiber filaments, or covered with a layer of natural fibers. Fabrics made of spandex-covered yarns, such as socks and underwear, give people a sense of body beauty and comfort after wearing, and are very popular in the market, especially among young people. However, the covering yarn that only coats a layer of silk on the outside of the spandex core silk, and it is the covering yarn of the same fiber, generally can only be used as socks and underwear, and the scope of use ha...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D02G3/32D02G3/04
Inventor 桑建军张枭
Owner JIANGSU JIADE FIBER TECH
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