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Cotton fabric energy conservation and emission reduction one-bath dyeing process

A one-bath dyeing, energy-saving and emission-reducing technology, which is applied in the field of fabric dyeing and cotton fabric energy-saving and emission-reducing same-bath dyeing, can solve the problems of unsatisfactory vividness, lowering the dyeing temperature of disperse dyes, and increasing environmental pollution, etc. To achieve the effect of shortening the dyeing time, reducing the dyeing process and improving economic benefits

Inactive Publication Date: 2020-01-03
HANGZHOU TIANRUI DYEING PRINTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional dyeing method adopts the two-bath dyeing method of washing first, then over-dyeing, and also pays special attention to the post-treatment process. A little carelessness will cause color difference, which is time-consuming, laborious, costly, and increases environmental pollution.
Add some auxiliaries to reduce the dyeing temperature of disperse dyes, try to make reactive / disperse dyes compatible, and use one-bath method to dye cotton fabrics, but it does not fundamentally change the solubility of disperse dyes, so that its products are stable. Indicators such as vividness did not achieve very satisfactory results

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

[0014] An energy-saving and emission-reducing same-bath dyeing process for cotton fabrics, the process comprising:

[0015] (1) Prepare cotton fabric: wet the cotton fabric with water and squeeze it dry;

[0016] (2) Configure the dye solution: use disperse red-3B, reactive brilliant red K-2BP, salt and Na 2 CO 3 and penetrating agent, take a small amount of water and mix thoroughly to prepare the dye solution, in which the concentration of disperse dyes is 2.5% (owf), the concentration of reactive dyes is 2.5% (owf), Na 2 CO 3 The concentration of osmotic agent is 10 g / L, the concentration of osmotic agent is 2.5 g / L, and the concentration of table salt is 20 g / L;

[0017] (3) Dyeing: Heat the above dye solution to 60°C, then add a little salt, pour it into an oil-bath dyeing cup filled with cotton fabrics and cover it for dyeing. After 10 minutes, raise the temperature to 90°C, add a little salt, and cover tightly Heat up to 95°C, keep warm for 30 minutes, then cool down...

Embodiment 2

[0019] An energy-saving and emission-reducing same-bath dyeing process for cotton fabrics, the process comprising:

[0020] (1) Prepare cotton fabric: wet the cotton fabric with water and squeeze it dry;

[0021] (2) Configure the dye solution: use disperse red-3B, reactive brilliant red K-2BP, salt and Na 2 CO 3 and penetrating agent, take a small amount of water and mix thoroughly to prepare the dye solution, in which the concentration of disperse dyes is 3% (owf), the concentration of reactive dyes is 3% (owf), Na 2 CO 3 The concentration of osmotic agent is 12g / L, the concentration of osmotic agent is 3 g / L, and the concentration of table salt is 22g / L;

[0022] (3) Dyeing: Heat the above dye solution to 60°C, then add a little salt, pour it into an oil-bath dyeing cup filled with cotton fabrics and cover it for dyeing. After 10 minutes, raise the temperature to 90°C, add a little salt, and cover tightly Heat up to 115°C, keep warm for 30 minutes, then cool down to 90°...

Embodiment 3

[0024] An energy-saving and emission-reducing same-bath dyeing process for cotton fabrics, the process comprising:

[0025] (1) Prepare cotton fabric: wet the cotton fabric with water and squeeze it dry;

[0026] (2) Configure the dye solution: use disperse red-3B, reactive brilliant red K-2BP, salt and Na 2 CO 3 and penetrating agent, take a small amount of water and mix thoroughly to configure the dye solution, in which the concentration of disperse dyes is 3.3% (owf), the concentration of reactive dyes is 3.3% (owf), Na 2 CO 3 The concentration of osmotic agent is 14 g / L, the concentration of osmotic agent is 3.3 g / L, and the concentration of table salt is 23 g / L;

[0027] (3) Dyeing: Heat the above dye solution to 60°C, then add a little salt, pour it into an oil-bath dyeing cup filled with cotton fabrics and cover it for dyeing. After 10 minutes, raise the temperature to 90°C, add a little salt, and cover tightly Heat up to 120°C, keep warm for 30 minutes, then cool d...

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 discloses a cotton fabric energy conservation and emission reduction one-bath dyeing process. According to the process, a one-bath method is adopted, a cotton fabric is dyed by the aid of disperse dyes and reactive dyes, the disperse dyes with a wide dyeing condition application range and good salt-tolerance and alkali-resistant varieties are optimally selected, the reactive dyes with good coloring power and color fastness and capable of being basically not hydrolyzed in near-neutral color fixing and at high temperature are selected, and azo-dyes are avoided. According to the one-bath method, a reduction clearing process is omitted, dyeing processes are decreased, dyeing time is shortened, sewage discharge is reduced, energy consumption and cost are reduced, economic benefitsare improved, and the method is simple in process and convenient to operate and has a certain practical value.

Description

technical field [0001] The invention belongs to the field of fabric dyeing, and relates to the field of one-bath dyeing of cotton fabrics for energy saving and emission reduction. Background technique [0002] Cotton fabric has good performance in terms of moisture absorption and breathability, soft hand feeling, smooth surface, good warmth retention, easy dyeing, good alkali resistance, and good light resistance, so it plays an indispensable role in life and is deeply loved and welcomed by users. The traditional dyeing method adopts the two-bath dyeing method of washing first, then over-dyeing, and also pays special attention to the post-treatment process. A little carelessness will cause color difference, which is time-consuming, laborious, costly, and increases environmental pollution. Add some auxiliaries to reduce the dyeing temperature of disperse dyes, try to make reactive / disperse dyes compatible, and use one-bath method to dye cotton fabrics, but it does not fundame...

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): D06P1/16D06P1/38D06P1/673D06P1/00D06P3/66D06P3/60
CPCD06P1/0032D06P1/16D06P1/38D06P1/6735D06P1/67358D06P3/6033D06P3/66
Inventor 徐国庭
Owner HANGZHOU TIANRUI DYEING PRINTING
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