Process for spinning three-in-one stretch yarn of wool, filament and urethane elastic fiber

Abstract

The invention relates to a process for spinning three-in-one stretch yarn of wool, filament and urethane elastic fiber, is characterised in that: at first, a continuous yarn feed device and a spandex feed device is mounted on a spinning machine, spandex is applied with a certain pre-tension, then the spandex is positioned by a guide yarn, and fed in a roving strand which is performed with normal drafting at a front roller tongs mouth, the continuous yarn is also directly fed to the front roller tongs mouth via a yarn guide hole and is held with a certain distance from the strand, the continuous yarn and the strand in which spandex is envelopped are twisted together under the tongs mouth to form a twisting trigonum, and the twisted yarn is winded on a yarn tube to form a three-in-one stretch yarn of wool, continuous yarn and spandex. The invention has a low spinning cost, good quality yarns, simple production and less difficulty.

Description

Technical field: [0001] The invention relates to a spinning method of elastic yarn, in particular to a spinning method of three-in-one elastic yarn of wool, filament and spandex. It belongs to the field of textile technology. Background technique: [0002] With the improvement of people's living standards, the requirements for woolen products have shifted from warm to light and comfortable. At the same time, after the 2000 Olympic Games, elastic fabrics became the focus of fashion. The annual market growth rate of the global stretch fabric is around 10%, while it is as high as 15% in the Asia-Pacific region. The biggest feature of elastic fabric is that it is elastic, comfortable to wear, free to move, and can show the beauty of human body curve to the greatest extent. To obtain such fabrics, spinning elastic yarns is a key link. [0003] At present, our common elastic yarn mainly has the following forms: [0004] 1. Feed spandex on spinning frame to make siro spinning ...

AI Technical Summary

Problems solved by technology

[0008] The first form does not need to be twisted in the back, and the fabric can be woven directly. The production is simple. If you want to obtain a higher count, you must use fine wool, which is expensive.

And if you do wool-polyester blending, it is easy to produce more hair particles after weaving.

[0009] In the second form, parallel twisting is required in the rear, and there are certain requirements for the yarn doubling machine. There must be a spandex feeding device. At the same time, the spandex is easy to break during twisting, which will cause uneven yarn elasticity.

[0010] The third form is restricted due to the high price of nylon filament

And the latter needs to be twisted, the production is complicated, and the processing is laborious

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