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Method for solving cold-batch pretreatment uneven dying

A technology of pretreatment of cold stacking and uneven dyeing, applied in the textile field, can solve the problems of poor peeling and softening effect, impurity removal, and uniform dyeing, so as to achieve uniform removal of color fixing agent and color difference of dyed flowers The probability of small, uniform dyeing effect

Active Publication Date: 2016-10-12
GUANGDONG ESQUEL TEXTILES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the dyeing production process of cotton and its blended fabrics, the quality of the pretreatment can directly affect the dyeing results, and the cold pile pretreatment is favored because of the uniform treatment, but there will be uneven dyeing, and the current dyeing In the end, if the color does not meet the dyeing requirements, then re-color, the proportion of dyed flower color difference is obviously high. Currently, it is stacked at room temperature for 18 hours and then washed in the dye vat, but generally only washed once at room temperature, which cannot completely remove impurities. The purpose is to affect the uniformity of dyeing, especially the effect of stripping and softening before coloring is not good, resulting in uneven dyeing after coloring

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A method for solving uneven dyeing by cold-stacking pre-treatment. Before the dyeing process, pre-dyeing is performed on cotton cloth, and the pre-dyeing treatment includes conventional padding treatment on the cloth, and then stacking for 18-30 hours , and then wash with water;

[0022] In the neutralization and water washing step, put the piled cotton cloth into the main vat of the dyeing vat, and according to the bath ratio of 6 (that is, add 6 kg of water per 1 kg of cloth), the cold and hot water pipeline connected to the main vat of the dyeing vat Enter the mixed water into the main vat, you can directly enter the water at 50°C, or after entering the water, raise the temperature of the water to 50°C at a rate of 5°C / min, and run the piled cotton fabrics in the water at 50°C for 10 minutes , run at a speed of 2 to 3 min / turn, drain water; then enter water into the main tank according to the bath ratio of 6, directly enter water at 90°C, or heat the water to 90°C at...

Embodiment 2

[0024] A method for solving uneven dyeing by cold pile pretreatment, which is basically the same as in Example 1, the difference is that the cloth is a cotton blended fabric, and the neutralization and washing steps are as follows: putting the cotton blended fabric after stacking into the dye vat In the main vat of the dyeing vat, according to the bath ratio of 10 (that is, adding 10 kg of water per 1 kg of fabric), the mixed water is fed into the main vat from the cold and hot water pipe connected to the main vat of the dyeing vat, and the water at 40 °C can be directly fed into the main vat, or the water can be mixed after entering the water. The water is heated up to 40°C at a heating rate of 5°C / min, and the cotton blended fabric after stacking is run in 40°C water for 12min at a speed of 2-3min / circle, draining water; To the main vat, you can directly enter water at 88°C, or after entering the water, raise the temperature of the water to 88°C at a rate of 5°C / min, so that ...

Embodiment 3

[0026] A method for solving uneven dyeing before cold pile treatment is basically the same as in Example 1, the difference is that in the neutralization and washing step, the piled cotton fabric is put into the master vat of the dyeing vat, and the dyeing ratio is adjusted according to the bath ratio. 8 (that is, add 8kg of water per 1kg of fabric), enter the mixed water from the hot and cold water pipeline connected to the main vat of the dyeing vat, and directly enter the water at 60°C, or heat the water at a rate of 5°C / min after entering the water Raise the temperature to 60°C, and run the piled cotton fabric in 60°C water for 8 minutes at a speed of 2 to 3 minutes / circle, drain water; then enter water into the main vat according to the bath ratio of 8, and directly enter 98°C or the water is heated up to 98°C at a rate of 5°C / min after water intake, so that the water temperature in the main cylinder is at 98°C, run for 8 minutes at a speed of 2-3min / cycle, and then cool do...

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Abstract

The invention discloses a method for solving cold-batch pretreatment uneven dying. Before the dyeing process, dyeing pretreatment is carried out on cloth and includes the steps of padding, batching and neutral washing. In the step of neutral washing, the batched cloth is put into a dye vat, water is fed, the batched cloth is operated for 10+ / -2 min in water at the temperature of 40-60 DEG C, and the water is drained; water is fed, the water temperature in the dye vat is made to be 88-98 DEG C, the cloth is operated for 10+ / -2 min and then cooled to 40-60 DEG C, and the water is drained; water is fed, the water temperature in the dye vat is made to be 40-60 DEG C, acetic acid is added, the cloth is operated for 5-10 min, then ferment is added, the cloth is operated for 5-10 min, and the water is drained. By adopting the method, the rate of additive color uneven dyeing can be reduced by 70%, and the ratio of uneven dying chromatic aberration is greatly reduced.

Description

technical field [0001] The invention relates to the field of textiles, in particular to a method for solving uneven dyeing by adopting cold pile pretreatment. Background technique [0002] In the dyeing production process of cotton and its blended fabrics, the quality of the pretreatment can directly affect the dyeing results, and the cold pile pretreatment is favored because of the uniform treatment, but there will be uneven dyeing, and the current dyeing In the end, if the color does not meet the dyeing requirements, then re-color, the proportion of dyed flower color difference is obviously high. Currently, it is stacked at room temperature for 18 hours and then washed in the dye vat, but generally only washed once at room temperature, which cannot completely remove impurities. The purpose is to affect the uniformity of dyeing, especially the effect of stripping and softening before coloring is not good, resulting in uneven dyeing after coloring. Therefore, it has become ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06B9/04D06P3/60D06P3/82D06L1/12
CPCD06B9/04D06L1/12D06P3/60D06P3/82
Inventor 李华南肖军徐鹏飞刘丽军
Owner GUANGDONG ESQUEL TEXTILES CO LTD
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