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Cotton fabric reactive dye cold pad-batch dyeing process

A technology of cold pad-batch dyeing and reactive dyes, which is applied in the field of dyeing technology of cotton fabric reactive dyes, can solve the problems of lack of theoretical guidance, etc., and achieve the effects of improving solubility, increasing penetration speed, and excellent color fastness

Inactive Publication Date: 2019-12-24
HANGZHOU TIANRUI DYEING PRINTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Cold pad-batch dyeing of pure cotton woven fabrics has been applied in production for a long time, but there is still a lack of clear theoretical guidance on the selection of dyes and dyeing processes

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

[0019] A cotton fabric reactive dye cold pad-batch dyeing process, characterized in that the steps of the process include: (1) configuring dyeing solution and lye; (2) fabric padding, (3) rolling, (4) stacking Color fixing, (5) washing, (6) soaping, (7) drying. Said dyeing liquor and lye are respectively prepared with soft water, mixed according to a set ratio by a proportional pump before dyeing, poured into a padding tank for dyeing, and the dyeing liquor and lye should be filtered before mixing, wherein said dyeing liquor contains reactive dyes Red E-BA, urea, penetrant, wherein reactive brilliant red E-BA concentration is 35g / L, urea concentration is 50g / L, and penetrant concentration is 1.5g / L; Described lye comprises sodium silicate and caustic soda, Among them, the concentration of sodium silicate is 50g / L, the concentration of caustic soda is 14g / L, and the volume ratio of dye liquor and alkali liquor is 4:1. The fabric cold rolling process adopts one dipping and one ...

Embodiment 2

[0021] A cotton fabric reactive dye cold pad-batch dyeing process, characterized in that the steps of the process include: (1) configuring dyeing solution and lye; (2) fabric padding, (3) rolling, (4) stacking Color fixing, (5) washing, (6) soaping, (7) drying. The dyeing liquor and lye are prepared with soft water respectively, mixed by a proportional pump according to the set ratio before dyeing, poured into the padding tank for dyeing, and the dyeing liquor and lye should be filtered before mixing, wherein the dyeing liquor contains reactive yellow CA, urea, penetrant, wherein active yellow CA concentration is 85g / L, urea concentration is 80g / L, and penetrant concentration is 2g / L; Described lye comprises sodium silicate and caustic soda, and wherein sodium silicate concentration is 85g / L, the concentration of caustic soda is 30g / L, and the volume ratio of dye liquor to lye liquor is 4:1. The fabric cold rolling process adopts one dipping and one rolling, the padding temp...

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PUM

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Abstract

The invention provides a cotton fabric reactive dye cold pad-batch dyeing process. The cotton fabric reactive dye cold pad-batch dyeing process comprises the following steps: (1) preparing dye liquorand alkali liquor, (2) padding a fabric, (3) rolling, (4) stacking and fixing the color, (5) washing with water, (6) soaping, and (7) drying. Cold pad-batch dyeing is a semi-continuous dyeing process,and after the fabric is padded with the dye liquor containing reactive dye, an alkali agent and other auxiliary agents, the fabric is rolled and stacked for a period of time at room temperature to complete adsorption, diffusion and fixation of the dye; and the dyeing process is excellent in dyeing fastness, good in leveling property and reproducibility, and less in saline-alkali consumption, andwater consumption and sewage discharge are also greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of dyeing, and relates to a cotton fabric dyeing process with reactive dyes. Background technique [0002] So far, dyeing technology is based on wet heat treatment, such as high temperature exhaust dyeing, continuous pad dyeing. Its main disadvantages are high energy consumption, easy to produce swimming color difference, and cotton fabrics sensitive to tension are easy to wrinkle during processing, which affects the fabric feel. Cold pad-batch dyeing is a semi-continuous dyeing process. After the fabric is padded with the dye solution containing reactive dyes, alkali agents and other auxiliaries, it is rolled up and stacked at room temperature for a period of time to complete the adsorption, diffusion and color fixation of the dyestuffs. effect. It can be known from dyeing thermodynamics that the amount of dye uptake is closely related to the dyeing temperature, and the lower the dyeing temperature, the h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06B21/00D06B3/18D06B23/04D06B19/00D06P1/38D06P1/44D06P1/649D06P1/673D06P3/66D06P5/02
CPCD06B3/18D06B19/0005D06B21/00D06B23/04D06B2700/36D06P1/38D06P1/445D06P1/6491D06P1/6735D06P3/66D06P5/02
Inventor 许红阳蔡辉满陈洲航胡少军朱天林
Owner HANGZHOU TIANRUI DYEING PRINTING
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