A preparation method of flax semi-bleached yarn with dyeing differentiation

A differentiated flax technology, applied in the textile industry, can solve problems such as long hairiness of spun yarns, difficulty in merging and drafting, loss of yarn strength, etc., and achieve strong market competitiveness, unique fabric style, and strong weaving selectivity.

Active Publication Date: 2019-07-23
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The technological process is long and the production cost is high; the uniformity of the dyed sliver is also poor. After the sliver is bleached, dyed and dried, the fibers are bonded together, which makes it difficult to merge and draw; The drawing roving process results in longer spun yarn hairiness and more hemp particles, especially the loss of yarn strength, resulting in low spinning line strength index, which is difficult to meet the existing weaving requirements of weaving and hinders the diversity of products to develop

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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  • A preparation method of flax semi-bleached yarn with dyeing differentiation
  • A preparation method of flax semi-bleached yarn with dyeing differentiation
  • A preparation method of flax semi-bleached yarn with dyeing differentiation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] After the flax raw material is combed by a combing machine, it is drawn and combined on the forming and drawing equipment, and then the roving with a fineness of 2.6Nm and a twist of 31T / m is spun on the roving equipment, and then the rovings are placed separately for boiling and bleaching In the equipment, two chemical processes are carried out:

[0035] Chemical treatment process A is divided into three steps: sub-bleaching, oxygen bleaching, and biological post-treatment:

[0036] Add 1.5% (owf) sodium chlorite and 1% (owf) sodium nitrate during the sub-bleaching process, the pH value is controlled at 2.5, the initial temperature is 30°C, the temperature rises to 50°C, the heating rate is 0.7°C / min, the holding time After 30 minutes, the heat preservation is completed and the drainage liquid is washed to neutral to complete the sub-bleaching; then carry out oxygen bleaching, add 5% (owf) hydrogen peroxide, 4% (owf) sodium silicate, 5% (owf) soda ash, and control the ...

Embodiment 2

[0042] After the flax raw material is combed by a combing machine, it is drawn and combined on the forming and drawing equipment, and then the roving with a fineness of 2.6Nm and a twist of 31T / m is spun on the roving equipment, and then the rovings are placed separately for boiling and bleaching In the equipment, two chemical processes are carried out:

[0043] Chemical treatment process A is divided into three steps: sub-bleaching, oxygen bleaching, and biological post-treatment:

[0044] Add 1.5% (owf) sodium chlorite and 1% (owf) sodium nitrate during the sub-bleaching process, the pH value is controlled at 2.5, the initial temperature is 30°C, the temperature rises to 50°C, the heating rate is 0.7°C / min, the holding time After 30 minutes, the heat preservation is completed and the drainage liquid is washed to neutral to complete the sub-bleaching; then carry out oxygen bleaching, add 5% (owf) hydrogen peroxide, 4% (owf) sodium silicate, 5% (owf) soda ash, and control the ...

Embodiment 3

[0050] After the flax raw material is combed by a combing machine, it is drawn and combined on the forming and drawing equipment, and then the roving with a fineness of 2.6Nm and a twist of 31T / m is spun on the roving equipment, and then the rovings are placed separately for boiling and bleaching In the equipment, two chemical processes are carried out:

[0051] Chemical treatment process A is divided into three steps: sub-bleaching, oxygen bleaching, and biological post-treatment:

[0052] Add 1.5% (owf) sodium chlorite and 1% (owf) sodium nitrate during the sub-bleaching process, the pH value is controlled at 2.5, the initial temperature is 30°C, the temperature rises to 50°C, the heating rate is 0.7°C / min, the holding time After 30 minutes, the heat preservation is completed and the drainage liquid is washed to neutral to complete the sub-bleaching; then carry out oxygen bleaching, add 5% (owf) hydrogen peroxide, 4% (owf) sodium silicate, 5% (owf) soda ash, and control the ...

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 flax half bleached yarn manufacturing method with dyeing differentiation. The method comprises: dividing flax roving into two groups, using two different chemical treatment processes to treat, and then feeding the flax roving obtained after the two different chemical treatment processes into a drafting region of spun yarns, through drafting, twisting to spin a single yarn, similar to siro spinning, finally drying and spooling and forming, to manufacture a flax half bleached yarn with dyeing differentiation. After the spun flax half bleached yarn with dyeing differentiation is dyed, the yarn has color spun style, but evenness, strength, and yarn hairness are superior to evenness, strength, and yarn hairness of a flax long ramie color spun yarn. The manufacturing process is shorter than technological process of a color spun yarn. The method is low in manufacturing cost and good in spinnability. The novel differentiation linen expands and enriches kinds of flax yarn products, and is suitable for yarn dyeing and grey dyeing, and has good weaving selectivity. Fabric styles are unique, and the flax half bleached yarn has good market competitiveness and good market prospect.

Description

technical field [0001] The invention relates to a preparation method of flax semi-bleached yarn with dyeing differentiation, belonging to the technical field of textile industry. Background technique [0002] The market competitiveness of the traditional flax semi-bleached yarn is gradually weakening. In order to further develop the domestic and foreign flax market, the differentiated flax yarn is conducive to the development and utilization of linen clothing products, and then promotes market consumption. [0003] The existing flax long linen colored spinning is to dye the sliver, then mix different colors according to a certain ratio, and spin the colored spinning yarn. Its technological process is long and the production cost is high; the uniformity of the dyed sliver is also relatively poor, and after the sliver is bleached, dyed and dried, the fibers are bonded together, which is difficult to merge and draw; The drawing roving process results in longer spun yarn hairin...

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 Patents(China)
IPC IPC(8): D02G3/02D06L4/24D06L4/26D06L4/12D06L4/13D06M16/00D06M11/38D06M11/76D06M11/50D06M11/54D06M101/06
CPCD02G3/02D06L4/12D06L4/13D06L4/24D06L4/26D06M11/38D06M11/50D06M11/54D06M11/76D06M16/00D06M2101/06D10B2201/04
Inventor 杨飞孟超然丁金花郁崇文
Owner DONGHUA UNIV
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