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Dyeing process for improving color fastness of vegetable dye

A technology of vegetable dyes and dyeing fastness, which is applied in the field of dyeing technology to improve the dyeing fastness of vegetable dyes, and can solve the problems of fabric fastness, acid perspiration color fastness, heat press color fastness and rubbing color fastness. , wear and discoloration and other low fastness issues, to achieve good promotion prospects, bright yarn-dyed fabrics, and reduced toxicity

Pending Publication Date: 2022-07-29
鲁丰织染有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, when the traditional vat continuous dyeing process is used for dyeing vegetable dyes, the color fastness to acid perspiration, color fastness to hot pressing, color fastness to rubbing, and color fastness to abrasion are all low, which cannot satisfy people's requirements for various fabrics. Item Fastness Index Requirements

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

[0033] Fabric tissue specification: CM40*CPT30*110*65*61 / 62, pattern: through hole 6; using the dyeing process of the present invention to dye the fabric with vegetable dyes, the steps are as follows:

[0034] (1) Fabric pretreatment: The grey fabric is sequentially subjected to conventional singeing, desizing, scouring, bleaching and mercerizing processes to obtain semi-finished fabrics.

[0035] (2) Dyeing: prepare a vegetable dye dyeing solution, consisting of: Khaki Diresul Earth-sand liq 20g / L, Kekai Chemical Co., Ltd. TX 10g / L, and the balance is water. Pad the fabric to be dyed with the above-mentioned vegetable dye dyeing solution, with a padding ratio of 50%, and dry the fabric at 100° C. for 20 s after padding to obtain the dyed fabric.

[0036] (2) Fixing: prepare a fixing solution, the composition is: NaOH 2g / L, Na 2 S 2 O 4 10g / L, the balance is water. The dyed fabric obtained in the step (1) was padded with the fixing solution, with a residual ratio of 55%, ...

Embodiment 2

[0044] Fabric tissue specification: CM32*CM20*140*70*57 / 58, pattern: 2 / 1S; using the dyeing process of the present invention to dye the fabric with vegetable dyes, the steps are as follows:

[0045] (1) Fabric pretreatment: The grey fabric is sequentially subjected to conventional singeing, desizing, scouring, bleaching and mercerizing processes to obtain semi-finished fabrics.

[0046] (2) Dyeing: prepare a vegetable dye dyeing solution, consisting of: Khaki Diresul Earth-sand liq 30g / L, Kekai Chemical Co., Ltd. TX15g / L, and the balance is water. Pad the fabric to be dyed with the above-mentioned vegetable dye dyeing solution, with a padding ratio of 55%, and dry the fabric at 102° C. for 30 s after padding to obtain the dyed fabric.

[0047] (2) Fixing: prepare a fixing solution, the composition is: NaOH 6g / L, Na 2 S 2 O 4 15g / L, the balance is water. The dyed fabric obtained in the step (1) was padded with the fixing solution, with a residual rate of 60%, and then stea...

Embodiment 3

[0055] Fabric tissue specification: CM50*CM50*160*110*57 / 58, pattern: 22 / 31S; using the dyeing process of the present invention to dye the fabric with vegetable dyes, the steps are as follows:

[0056] (1) Fabric pretreatment: The grey fabric is sequentially subjected to conventional singeing, desizing, scouring, bleaching and mercerizing processes to obtain semi-finished fabrics.

[0057] (2) Dyeing: prepare a vegetable dye dyeing solution, consisting of: Khaki Diresul Earth-sand liq 40g / L, Kekai Chemical Co., Ltd. TX12g / L, and the balance is water. Pad the fabric to be dyed with the above-mentioned vegetable dye dyeing solution, with a padding ratio of 52%, and dry it at 105° C. for 10 s after padding to obtain the dyed fabric.

[0058] (2) Fixing: prepare a fixing solution, the composition is: NaOH 4g / L, Na 2 S 2 O 4 13g / L, the balance is water. The dyed fabric obtained in the step (1) was pad-rolled with the fixing solution, with a residual rate of 58%, and then steam...

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Abstract

The invention belongs to the technical field of textile finishing and processing, and particularly relates to a dyeing process for improving color fastness of vegetable dye. The dyeing process comprises the following steps: (1) padding a to-be-dyed fabric in a vegetable dye dyeing solution, and then drying the to-be-dyed fabric to obtain a dyed fabric; (2) padding the dyed fabric obtained in the step (1) in a color fixing solution, performing steaming reduction, then performing oxidation color fixing through a H2O2 solution with the concentration of 1-2.5 g / L, and then performing soft finishing to obtain a plant dye dyed fabric; the vegetable dye staining solution comprises the following components: 0.5-40g / L of vegetable dye, 10-15g / L of migration inhibitor and the balance of water; and the color fixing liquid comprises the following components: 2-6 g / L of NaOH, 10-15 g / L of Na2S2O4 and the balance of water. The dyed fabric is stable in quality, bright and plump in yarn-dyed weaving, excellent in color fastness and good in washable performance, and the dyeing process is green and environmentally friendly.

Description

technical field [0001] The invention belongs to the technical field of textile finishing and processing, and particularly relates to a dyeing process for improving the dyeing fastness of vegetable dyes. Background technique [0002] At present, the chemical components contained in dyes are relatively high. These chemical components have an impact on the human body and the environment. A large number of chemical substances discharged make the land salinized. These problems seriously hinder the further development of textiles. Therefore, in the dyeing and finishing production process It is particularly important to study the dyeing technology of plant dyes in China, and to achieve green dyeing and finishing from the source to prevent and control pollution. [0003] The dyeing of vegetable dyes mainly comes from various plants in nature. The dyeing process is also mainly to extract pigments. The residual liquid produced after dyeing has little harm to the environment. Using veg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P5/10D06P5/02D06P1/34
CPCD06P5/10D06P5/02D06P1/34
Inventor 张战旗齐元章李婉玉李庆印王德振王辉王桂艳谢汝义辛玉洁
Owner 鲁丰织染有限公司
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