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Method for processing over-twisted pure cotton yarns

A processing method and cotton yarn technology, applied in the direction of yarn, spinning machine, continuous winding spinning machine, etc., can solve the problems of cloth surface weaving defects, unstable knitting loops in the subsequent knitting, etc., so as to increase added value and improve Uniformity of cloth surface and simple operation

Inactive Publication Date: 2011-08-17
DONGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the internal stress and torque accumulated by the fibers in the yarn due to the twisting effect will also have a negative impact on the subsequent knitting or weaving process. There are weaving defects in the cloth surface during weaving, so the development of strong-twisted pure cotton yarn urgently needs to solve the problem of twist setting

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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  • Method for processing over-twisted pure cotton yarns
  • Method for processing over-twisted pure cotton yarns
  • Method for processing over-twisted pure cotton yarns

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] After the front roller 3 is installed a wetting device 7 to wet the yarn 5, and 0.5MPa high-pressure water enters through the inlet 9 outside the wetting device 7 and then forms water mist at the 0.05mm nozzle hole 10 on the inner wall. For the passing yarn 5, the cotton fiber absorbs enough moisture; a yarn guide 4'is installed 120mm directly above the yarn guide 4, and a heating device 8 is installed between the yarn guide 4 and the yarn guide 4' The yarn 5 is heated.

[0022] The wetting device 7 is a ring-shaped hollow cylinder, which is fixedly connected to the spinning frame, with an outer diameter of 5mm, an inner diameter of 3mm, and a length of 20mm. At the same time, in order to facilitate yarn feeding, a 0.5mm groove 11 is opened on the side of the wet device 7 .

[0023] The heating device 8 adopts a microwave heating method, using a standard straight waveguide of 109.2×54.6 mm, and is fixedly connected with the spinning frame, the microwave output power is 2.5 ...

Embodiment 2

[0026] A wetting device 7 is installed behind the front roller 3 to wet the yarn 5. 1MPa high-pressure water enters through the inlet 9 outside the wetting device 7 and then forms water mist at the 0.2mm nozzle hole 10 on the inner wall. The passing yarn 5 makes the cotton fiber absorb enough water; add a yarn guide 4'130mm directly above the yarn guide 4, and install 8 pairs of heating devices between the yarn guide 4 and the yarn guide 4' The yarn 5 is heated.

[0027] The wetting device 7 is a ring-shaped hollow cylinder, which is fixedly connected to the spinning frame, with an outer diameter of 10mm, an inner diameter of 6mm, and a length of 50mm. At the same time, a 1mm groove 11 is opened on the side of the wetting device 7 to facilitate threading.

[0028] The heating device 8 adopts a microwave heating method, using a standard straight waveguide of 109.2×54.6 mm, and is fixedly connected to the spinning frame. The microwave output power is 5 kW and the microwave frequency ...

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Abstract

The invention relates to a method for processing over-twisted pure cotton yarns. The method comprises the following steps that: a wetting device (7) is additionally installed behind front rollers (3) to wet a yarn (5) and the water with pressure being 0.5-1MPa enters via an inlet (9) outside the wetting device (7) and then forms water mist on orifices (10) with diameter being 0.05-0.2mm on the inner wall to act on the passing yarn (5); and a yarn guide (4') is additionally installed 120-130mm right above a yarn guide hook (4); and a heating device (8) is additionally installed between the yarn guide hook (4) and the yarn guide (4') to heat the yarn (5). The method has the following beneficial effects: the wetting device and the heating device are only additionally installed on the traditional ring spinning equipment; the method is simple to operate and suitable for scale production; the over-twisted pure cotton yarns obtained by the method not only overcome the defect that the traditional over-twisted pure cotton yarns easily have braids, but also can improve the cloth cover evenness of the subsequent over-twisted pure cotton products and improve the added value of the final products.

Description

Technical field [0001] The invention belongs to the field of yarn processing, and particularly relates to a method for processing strong twisted pure cotton yarn. Background technique [0002] Twisting refers to the process of twisting, twisting or winding fiber materials such as fiber strands and continuous filament bundles around their axis. For fiber aggregates, especially short fibers, twisting is a necessary condition for making yarns. . Twist provides the cohesion that keeps the fibers together. Twisting is the main factor that affects the structure of the yarn, almost all physical and mechanical properties of the yarn are affected, and it is a necessary means for the stability and usability of the yarn. [0003] In the process of twisting, because the length of the path that the fiber travels on the different radii of the yarn cross section is inconsistent, the longer the path toward the outer layer is, the shorter the path toward the inner layer, and the fibers on each ra...

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): D01H13/30D01H13/28D01H1/02D02G3/02
Inventor 薛文良魏孟媛程隆棣钱竞芳张瑞寅
Owner DONGHUA UNIV