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Dyeing process for producing denim yarns by using reactive dye dyeing method

A technology of reactive dyes and dyeing methods, which is applied in the field of dyeing process for the production of denim yarn, can solve the problems of fast penetration of reactive dyes, achieve the effects of reducing dyeing costs, enriching color systems, and saving washing processes

Inactive Publication Date: 2021-06-04
LUTAI TEXTILE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: to overcome the deficiencies of the prior art, to provide a dyeing process for producing denim yarn by using the dyeing method of reactive dyes, to solve the problem of fast penetration in the dyeing process of reactive dyes, and to realize the dyeing of the outer layer of raw yarn , undyed denim yarn style on the inner layer, and realize the production of colored denim yarn

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

Embodiment 1

[0024] (1) Preparation of dye solution: dissolve reactive dye BRF: 20g / L, reactive dye B4R: 5g / L, penetrant WAM: 1g / L, sodium alginate: 15g / L, baking soda: 20g / L in water, Prepared as a dye solution;

[0025] (2) Dyeing: Put the dyeing liquid into the dyeing tank of the online dyeing equipment, use the high-speed operation of the equipment to make the yarn pass through the dyeing liquid quickly, and wind it into a loose bobbin after passing through the dyeing liquid extrusion device and drying device; The vehicle speed is 350m / min, the liquid carrying rate of the dyed yarn is 80%, and the moisture content of the loose package yarn is 30%;

[0026] (3) Yarn fixation by steaming: put the dyed loose yarn into a high-temperature and high-pressure steamer, and use saturated steam to fix the color at high temperature. The steaming temperature is 110° C. and the time is 20 minutes;

[0027] (4) Post-treatment: Put the bobbin after steaming and fixing the color into the bobbin dyeing...

Embodiment 2

[0030] (1) Preparation of dye solution: dissolve reactive dye NXGN: 20g / L, reactive dye RX6BN: 10g / L, penetrant WAM: 0.5g / L, sodium alginate: 20g / L, baking soda: 30g / L in water , prepared into a dye solution;

[0031] (2) Dyeing: Put the dyeing liquid into the dyeing tank of the online dyeing equipment, use the high-speed operation of the equipment to make the yarn pass through the dyeing liquid quickly, and wind it into a loose bobbin after passing through the dyeing liquid extrusion device and drying device; The vehicle speed is 400m / min, the liquid carrying rate of the dyed yarn is 75%, and the moisture content of the loose package yarn is 25%;

[0032] (3) Yarn fixation by steaming: put the dyed loose yarn into a high-temperature and high-pressure steamer, and use saturated steam to fix the color at high temperature. The steaming temperature is 102° C. and the time is 30 minutes;

[0033] (4) Post-treatment: Put the bobbin after steaming and fixing the color into the bobb...

Embodiment 3

[0036] (1) Preparation of dye solution: dissolve reactive dye BKSRFD: 30g / L, reactive dye R3BF: 5g / L, penetrant WAM: 2g / L, sodium alginate: 10g / L, baking soda: 40g / L in water, Prepared as a dye solution;

[0037] (2) Dyeing: Put the dyeing liquid into the dyeing tank of the online dyeing equipment, use the high-speed operation of the equipment to make the yarn pass through the dyeing liquid quickly, and wind it into a loose bobbin after passing through the dyeing liquid extrusion device and drying device; The vehicle speed is 450m / min, the liquid carrying rate of the dyed yarn is 70%, and the moisture content of the loose package yarn is 20%;

[0038] (3) Yarn fixation by steaming: put the dyed loose yarn into a high-temperature and high-pressure steamer, and use saturated steam to fix the color at high temperature. The steaming temperature is 120°C and the time is 10 minutes;

[0039] (4) Post-treatment: Put the bobbin after steaming and fixing the color into the bobbin dyei...

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 belongs to the technical field of textile dyeing, and particularly relates to a dyeing process for producing denim yarns by using a reactive dye dyeing method. The dyeing process specifically comprises the steps of dye liquor preparation, online dyeing, yarn steaming and color fixation and post-treatment, and is characterized in that a single yarn sizing machine is used as online dyeing equipment, and grey yarns are directly used for dyeing. The purpose of yarn ring dyeing is achieved by utilizing the characteristic of poor hygroscopicity of grey yarn and high-speed operation of equipment, and the denim yarn dyed by the reactive dye is obtained after yarn steaming, color fixation and post-treatment. The denim yarn style that the outer layer of the grey yarn is dyed and the inner layer of the grey yarn is not dyed is achieved through the reactive dye, meanwhile, the dyeing cost is reduced, and production of the colored denim yarn is achieved.

Description

technical field [0001] The invention belongs to the technical field of textile dyeing, and in particular relates to a dyeing process for producing denim yarn by using a reactive dye dyeing method. Background technique [0002] As one of the most popular fabrics, denim fabric plays an increasingly important role in daily life and is deeply loved by consumers. At present, traditional denim fabrics are mostly indigo and sulfur dyed products. The color of indigo denim fabrics is relatively single, which cannot meet people's needs for products. Sulfur dyes have disadvantages such as poor color stability, incomplete color spectrum, and high cost of dyeing sewage treatment. The over-dyeing method is used to produce colored denim fabrics, but there are problems such as complex processing, unstable shade, and poor reproducibility. With consumers' demand for diversified denim fabrics, the use of reactive dyes to produce denim fabrics has become one of the focuses of research. Reacti...

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): D06P1/38D06P1/48D06P5/02D06P3/66
CPCD06P1/38D06P1/48D06P5/02D06P3/66
Inventor 王广武刘柳丰硕张璐璐尹连宝夏文静李友祥杨自来张瑞云徐卫林
Owner LUTAI TEXTILE
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