One-bath dyeing technology for polyester-cotton blended fabric by natural vegetable dye

A technology of natural plant dyes and polyester-cotton blending, applied in the textile field, can solve problems such as application restrictions, environmental pollution, and corrosion of equipment, and achieve the effects of reducing energy consumption, waste water, and waste water discharge

Inactive Publication Date: 2017-05-10
长兴锦桥纺织有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The pH value of sodium chlorite bleaching solution is 4 to 4.5, and it is carried out at high temperature. It has the advantages of good whiteness and little damage to fibers, but it is easy to produce toxic gases during bleaching, pollute the environment, and corrode equipment. The equipment requires special equipment. Made of metal materials, so it is limited in application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A kind of one-bath dyeing process of natural vegetable dyestuff to polyester-cotton blended fabric, comprises the following steps:

[0037] A. Freeze the polyester-cotton blended fabric at minus 50°C for 3.5 hours, then carry out vacuum reheating under a vacuum of -0.2MPa to return the polyester-cotton blended fabric to normal temperature, and the vacuum rewarming time is controlled at 1.2h ;

[0038] B. Put the rewarmed polyester-cotton blended fabric into the one-bath treatment solution with a bath ratio of 1:15, then raise the temperature to 100°C at a rate of 2.5°C / min and keep it warm for 30 minutes;

[0039] C. After the heat preservation is over, take out the fabric, rinse with sodium silicate solution for 3 minutes, soap, wash and dry.

[0040] The one-bath method treatment liquid of described step B comprises the composition of following percentage by weight:

[0041] Natural Vegetable Dyes 5%

[0042] Sodium Lauryl Sulfate 3%

[0043] Hydrogen peroxide 0.8...

Embodiment 2

[0055] A kind of one-bath dyeing process of natural vegetable dyestuff to polyester-cotton blended fabric, comprises the following steps:

[0056] A. Freeze the polyester-cotton blended fabric at minus 45°C for 5 hours, and then carry out vacuum rewarming under a vacuum of -0.2MPa to return the polyester-cotton blended fabric to normal temperature, and the vacuum rewarming time is controlled at 1 hour;

[0057] B. Put the rewarmed polyester-cotton blended fabric into the one-bath treatment solution with a bath ratio of 1:20, then raise the temperature to 100°C at a rate of 2°C / min and keep it warm for 30 minutes;

[0058] C. After the heat preservation is over, take out the fabric, rinse with sodium silicate solution for 2 minutes, soap, wash and dry.

[0059] The one-bath method treatment liquid of described step B comprises the composition of following percentage by weight:

[0060] Natural Vegetable Dyes 2%

[0061] Surfactant 4%

[0062] Hydrogen peroxide 0.5%

[0063]...

Embodiment 3

[0074] A kind of one-bath dyeing process of natural vegetable dyestuff to polyester-cotton blended fabric, comprises the following steps:

[0075] A. Freeze the polyester-cotton blended fabric at minus 60°C for 3 hours, and then carry out vacuum rewarming under a vacuum of -0.2MPa to return the polyester-cotton blended fabric to normal temperature, and the vacuum rewarming time is controlled at 1.5h;

[0076] B. Put the rewarmed polyester-cotton blended fabric into the one-bath treatment solution with a bath ratio of 1:10, then raise the temperature to 100°C at a rate of 3°C / min and keep it warm for 20 minutes;

[0077] C. After the heat preservation is over, take out the fabric, rinse with sodium silicate solution for 3.5 minutes, soap, wash and dry.

[0078] The one-bath method treatment liquid of described step B comprises the composition of following percentage by weight:

[0079] Natural Vegetable Dyes 8%

[0080] Surfactant 2%

[0081] Hydrogen peroxide 1%

[0082] S...

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Abstract

The invention discloses a one-bath dyeing technology for polyester-cotton blended fabric by natural vegetable dye. The one-bath dyeing technology has the advantages that the polyester-cotton blended fabric is subjected to low-temperature treatment and then a one-bath treatment technology, and boiling-off, bleaching and dyeing are completed once, so that a technological process is shortened, wastewater discharge amount is decreased, energy consumption is reduced, and the environment-friendly requirements of China on the textile industry, involving energy conservation, consumption reduction, wastewater reduction and waste gas emission, are satisfied; organic solvents are avoided in a whole dyeing process, so that human bodies and the environment are hardly endangered; one-bath treatment liquid is reusable, so that the wastewater discharge amount can be decreased; dyeing promoters are added into the one-bath treatment liquid and then gelatin is added into a subsequent sodium silicate solution, so that the dye uptake is increased, color difference is reduced and fixation effects are enhanced; since the sodium silicate solution is used for fixation after one-bath treatment, excellent fixation effects are achieved, the dye uptake can be above 95%, and the fixation rate can be also above 90%.

Description

technical field [0001] The invention relates to the technical field of textiles, in particular to a one-bath dyeing process of natural plant dyes on polyester-cotton blended fabrics. Background technique [0002] Natural fibers contain impurities, and in the process of textile processing, various pulps, oils and contaminated dirt are added. The existence of these impurities not only hinders the smooth progress of dyeing and finishing, but also affects the wearability of fabrics. The purpose of scouring and bleaching is to use chemical and physical mechanical effects to remove impurities on the fabric, so that the fabric is white, soft, and has good permeability, so as to meet the wearing requirements and provide qualified semi-finished products for dyeing, printing, and finishing. Generally, it is necessary to perform singeing, desizing, scouring, bleaching and mercerizing on cotton fibers. [0003] Scouring: When cotton fiber grows, it is accompanied by natural impurities ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P3/85D06P1/34D06P1/44D06P1/649D06P5/10D06P5/08D06L4/13
CPCD06P1/0024D06P1/34D06P1/445D06P1/6497D06P1/6735D06P3/8228D06P5/08D06P5/10
Inventor 钱光强
Owner 长兴锦桥纺织有限公司
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