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Reduced dye yarn dyeing method for elastic yarn

A technology of elastic yarn and dye, applied in the textile field, can solve the problems of easy generation of colored flowers, high risk of colored flowers, and difficulty in dyeing, etc., and achieve the effects of bright color, high light fastness, and uniform dyeing.

Active Publication Date: 2019-03-26
GUANGDONG ESQUEL TEXTILES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is cumbersome to operate, and it is easy to produce color flowers, so vat dyes are generally only used in dyeing cloth at present.
Many domestic textile enterprises have tried to apply vat dyes to dyeing yarns (such as bobbin yarns or beam yarns of woven fabrics), but due to the serious problem of yarn coloring, there has been no successful precedent, especially for elastic yarns. Dyeing, because the stretch yarn has high resilience, the stretch yarn package shrinks in water after pre-treatment, and the dyeing is difficult. Domestic textile enterprises generally only use reactive dyes for dyeing, and the stretch yarn of the package has a high risk of dyeing with vat dyes. extremely rare

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

[0046] This embodiment is a kind of method for dyeing stretch yarn with vat dyes. In a dyeing vat with a diameter of 1800MM, a cylinder of JAL50\40DX cotton / Lycra elastic cheese is cast and dyed. The cheese is a regular cylinder, and the density of the same cylinder is basically the same. Weight 338KG, density 0.30g / cm 3 , Single yarn weight: 0.86, liquor ratio 1:7.38, vat dyes (average particle size less than 1 micron) formula: Shihlin Brilliant Green 0.0095% OWF, Shihlin Blue 0.326% OWF.

[0047] Proceed as follows:

[0048] 1. Pre-treatment: After the tube elastic yarn is put into the vat, the main vat is filled with water, adding 0.9g / L scouring agent, 0.8g / L chelating dispersant, 0.8g / L hydrogen peroxide stabilizer, 3.0g / L 50% liquid caustic soda, 27.5%H 2 o 2 4.5g / L, heat up to 110°C for 30 minutes; drain, then add water, add HAC 0.8g / L for pickling, and treat at room temperature for 5 minutes; drain, then add water, add 0.15g / L enzyme water to deoxygenate, and treat ...

Embodiment 2

[0055] In this embodiment, a method for dyeing stretch yarn with vat dyes is to cast and dye a cylinder of XLA 40\40D cotton / XLA stretch yarn in a dyeing vat with a diameter of 1400MM, and the density is 0.28g / cm 3 , single yarn weight 0.85KG, yarn weight 212.5KG, liquor ratio 1:11.6, vat dye (average particle size less than 1 micron) formula: Shihlin blue 0.0036% OWF, Shihlin olive green 0.205% OWF, Shihlin purple 0.073 %OWF.

[0056] Proceed as follows:

[0057] 1. Pretreatment: After the elastic bobbin is put into the vat, the main vat is filled with water, adding 0.9g / L scouring agent, 0.8g / L chelating dispersant, 0.8g / L hydrogen peroxide stabilizer, 3.0g / L 50% liquid caustic soda, 27.5%H 2 o 2 4.5g / L, heat up to 110°C for 30 minutes; drain, then add water, add HAC 0.8g / L for pickling, and treat at room temperature for 5 minutes; drain, then add water, add 0.15g / L enzyme water to deoxygenate, and treat at room temperature for 5 minutes; drained, to be dyed;

[0058] 2...

Embodiment 3

[0064] The vat dyeing method of a kind of stretch yarn of this embodiment, its raw material and steps are the same as embodiment 1, the difference is: step 2.1 dyeing—the operation of reducing is as follows:

[0065] After the pre-treatment is completed, the main tank is filled with water, the water level is high, the water overflows the elastic yarn of the tube, the main pump is turned on, the pump speed is adjusted to 1450 rpm, and the temperature is raised to 90°C; the material tank is parallelly filled with water, and dispersant 1g / L is added in sequence , chelating dispersant 1g / L, vat dyes in the same amount as the formula (water has been added to beat the material), and stir for 10 minutes. After the main vat reaches 90 ° C, the dye solution in the material vat is pumped into the main vat and run at 90 ° C for 20 minutes; Cool the temperature of the vat to 60°C, return the main vat to the material vat, add vat dye dyeing leveling agent 0.5% OWF, stir for 5 minutes, pump ...

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Abstract

The invention relates to a reduced dye yarn dyeing method for an elastic yarn. The method comprises the following steps: pre-treatment, reduction and oxidization step in a bath and post-treatment. Thereduction and oxidization step in the bath comprises the following steps: adding water into the pre-treated elastic yarn; then adding a reduced dye and an alkali reducing agent for a reduction reaction; and after the reduction reaction, adding an oxidant for an oxidizing reaction. The yarn dyeing method can solve the problem of dyeing defect and aberration of the inner and outer layer of the reduced dye for dyeing the elastic yarn, so that the obtained elastic dye is uniform in color, and is bright in color and luster and high in soaping and light fastness.

Description

technical field [0001] The invention relates to the technical field of textiles, in particular to a method for dyeing elastic yarn with vat dyes. Background technique [0002] Vat dyes are dyes with excellent properties in dyes. According to its main chemical structure, it can be divided into two categories: indigo and anthraquinone. It has a relatively complete chromatogram, bright color, and high fastness to soaping and sunlight. The dyeing process is as follows: first, it becomes a soluble leuco-salt through reduction in lye, which is adsorbed by the cellulose fiber, and then oxidized to return to the original insoluble dye. [0003] Traditional vat dyeing generally adopts the "dry vat method (pre-reduction method)", that is, vat dyes are first reduced, and then added to the dye vat for dyeing. This method is cumbersome to operate and is prone to color flowers, so vat dyes are generally only applied to dyed cloth at present. Many domestic textile enterprises have trie...

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): D06P1/22D06P1/44D06P1/673D06P3/85D06P5/02D06P5/10
CPCD06P1/22D06P1/222D06P1/445D06P1/673D06P1/6735D06P3/8219D06P3/8228D06P5/02D06P5/10
Inventor 黎娟何韵湘安志轩陈晓霓吴海彬
Owner GUANGDONG ESQUEL TEXTILES CO LTD
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