Production method of pure hemp mercerized yarn

A production method and yarn technology, which is applied in the production field of pure hemp mercerized yarn, can solve the problems of poor yarn elongation at breakage, inability to carry out actual production, and inability to mass-produce, etc., to achieve less broken ends and bright luster Dazzling and powerful effect

Inactive Publication Date: 2011-05-11
WUXI NATURAL GREEN FIBER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Hemp fiber is shorter and thinner than cotton, with a length of only 18-26mm, and its bending stiffness is more than twice that of cotton, reaching 5.03×10 -4 cN cm 2 , resulting in low cohesion of the hemp fiber yarn after spinning, and the yarn elongation at break is very poor, generally less than 2%. Excessive stretching and excessive alkali soaking cannot be carried out, otherwise the broken ends will be serious and cannot For actual production, that is, if the conventional mercerized cotton production process is used for production, the pure hemp yarn will have 200-400 broken ends per kilogram, which is serious and cannot be mass-produced

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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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0027] A kind of processing method of 60NM / 2 pure hemp mercerized yarn:

[0028] 1. Singeing

[0029] Singeing is performed twice on the yarn singeing machine, the singeing temperature is 950°C, and the operating speed at the burner of the singeing machine is 600 rpm to remove excess hairiness on the surface of the hemp yarn and make the surface smooth. The required burner temperature Uniform, the cleanliness of singeing is basically the same, without yellowing and whitening;

[0030] 2. Shaking yarn

[0031] Shake the yarn on the yarn reeling machine, shake the singed hemp yarn into a skein, so that the subsequent mercerizing and dyeing treatment, each skein is 550g;

[0032] 3. Mercerized

[0033] The yarn is placed in the yarn mercerizing machine, the concentration of alkali in the treatment solution is: 30 Baume degrees, the temperature of the treatment solution is 22°C, the tension is applied to stretch 3%, the time for soaking in alkali is 3 minutes, and the time for ...

specific Embodiment 2

[0042] A kind of processing method of 50NM / 2 pure hemp mercerized yarn:

[0043] 1. Singeing

[0044] Singeing is performed twice on the yarn singeing machine, the singeing temperature is 1000°C, and the operating speed at the burner of the singeing machine is 900 rpm to remove excess hairiness on the surface of the hemp yarn and make the surface smooth. The required burner temperature Uniform, the cleanliness of singeing is basically the same, without yellowing and whitening;

[0045] 2. Shaking yarn

[0046] Shake the yarn on the spinning machine, shake the singed hemp yarn into a skein, so that the subsequent mercerizing and dyeing treatment, each skein is 850g;

[0047] 3. Mercerized

[0048] Put the yarn in the yarn mercerizing machine, the concentration of alkali in the treatment solution is: 28 degrees Baume, the temperature of the treatment solution is 18°C, the tension is applied to stretch 1%, the time for soaking in alkali is 2 minutes, and the time for squeezing...

specific Embodiment 3

[0057] A kind of processing method of 45NM / 2 pure hemp mercerized yarn:

[0058] 1. Singeing

[0059] Singeing is performed twice on the yarn singeing machine, the singeing temperature is 1050°C, and the operating speed at the burner of the singeing machine is 1000 rpm to remove excess hairiness on the surface of the hemp yarn and make the surface smooth. The required burner temperature Uniform, the cleanliness of singeing is basically the same, without yellowing and whitening;

[0060] 2. Shaking yarn

[0061]Shake the yarn on the yarn reeling machine, and shake the singed hemp yarn into a skein, so that the subsequent mercerizing and dyeing treatment, each skein is 1000g;

[0062] 3. Mercerized

[0063] Put the yarn in the yarn mercerizing machine, the alkali concentration in the treatment solution is: 29 degrees Baume, the temperature of the treatment solution is 20°C, the tension is applied to stretch 2%, the time for soaking in alkali is 1 minute, and the time for sque...

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 provides a production method of pure hemp mercerized yarn. By the production method, the mercerized pure hemp yarn has few broken ends, excellent brute force and brightness, the deep dyeing property, level-dyeing property and penetrating property are greatly improved, the handle and smoothness are improved, the difficulty in later processes of dyeing, weaving and after finishing is reduced, and the application performance of the pure hemp yarn is integrally improved. The production method comprises the processes of singeing, reeling, mercerizing, dyeing, squeezing water, drying and rewinding, and is characterized in that the mercerizing process is as follows: yarn is put into a yarn mercerizing machine, wherein the alkalinity of treating fluid is 28-30 baume degrees, the temperature of the treating fluid is 18-22 DEG C, the applied tensile force stretching is 1-3%, the alkali dipping time is 1-3 minutes, the alkali squeezing time is 30 seconds-1 minute, time for washing with hot water is 30-60 seconds at the water temperature of 60-70 DEG C, time for washing with cold water is 30-45 seconds, and the treating time is 5 minutes-5 minutes and 50 seconds.

Description

technical field [0001] The invention relates to the technical field of production methods of hemp mercerized yarns, in particular to a production method of pure hemp mercerized yarns. Background technique [0002] Hemp fiber is a pure natural green textile raw material and one of the earliest textile raw materials used by humans. Hemp fiber itself has antibacterial and antibacterial properties, moisture absorption and perspiration, high temperature resistance, wave absorption and super absorption properties. Hemp yarn is usually used in knitted T-shirts, towels, socks and home textiles. It is a rare textile material that combines natural green and functional environmental protection. [0003] However, due to the special cross-sectional structure of hemp yarn, it has a large degree of crystallinity, orientation and dense amorphous area, resulting in a decrease in spinning cohesion, a decrease in the depth of dyeing, and an increase in the cost of weaving and finishing. At th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D02G3/02D06B7/04D06C9/02
Inventor 尹寿虎杭彩云朱国民王兰兰
Owner WUXI NATURAL GREEN FIBER TECH
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