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Dyeing method of rayon elastic knitted fabric

A dyeing method and technology for knitted fabrics, which are applied in the dyeing field of rayon elastic knitted fabrics, can solve the problems of color fastness, low utilization rate of uniform dyestuffs, unstable dyeing quality, low dyeing rate, etc., and achieve dyeing effect Good, improve smoothness, strong color fastness effect

Inactive Publication Date: 2019-01-29
SHAOXING COUNTY KWONG FUNG PRINTING & DYEING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The current rayon elastic knitted dyeing has many problems such as low dyeing rate, low color fastness, uniformity of dyeing and low utilization rate of dyestuffs, unstable dyeing quality, etc.

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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  • Dyeing method of rayon elastic knitted fabric

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A method for dyeing rayon elastic knitted fabric, comprising the following steps:

[0024] a) Pre-treatment, arrange the rayon elastic knitting in the desizing machine, add 2g / L of deoiling spirit, 7g / L of soda ash, 4g / L of hydrogen peroxide, the bath ratio is 1:15, and the water bath is heated up at a rate of 1.5°C / min, when the temperature rises to 80°C, keep it warm for 10 minutes, then cool down in a water bath at a rate of 2°C / min, and when the temperature drops to 45°C, discharge the waste water and inject cold water for 10 minutes;

[0025] b) Pre-setting, arrange the pre-treated rayon elastic knitting on the pre-setting machine, the temperature is controlled at 160°C; the speed is 30m / min;

[0026] c) Dyeing, put the pre-shaped rayon elastic knitted fabric into the dyeing machine, add reactive dye 0.5% owf, leveling agent alkyl polyoxyethylene ether 0.1g / L, soda ash 0.4 g / L, chelating dispersant sodium lignosulfonate 0.4g / L, bath ratio 1:20, then heat up in w...

Embodiment 2

[0033] A method for dyeing rayon elastic knitted fabric, comprising the following steps:

[0034] a) Pre-treatment, arrange the rayon elastic knitting in the desizing machine, add 3g / L of deoiling spirit, 9g / L of soda ash, 6g / L of hydrogen peroxide, the bath ratio is 1:15, and the water bath is heated up at a rate of 1.5°C / min, when the temperature rises to 90°C, keep it warm for 20 minutes, then cool down in a water bath at a rate of 2°C / min, and when the temperature drops to 50°C, discharge the waste water and inject cold water for 15 minutes;

[0035] b) Pre-setting, arrange the pre-treated rayon elastic knitting on the pre-setting machine, the temperature is controlled at 170°C; the speed is 35m / min;

[0036] c) Dyeing, put the pre-shaped rayon elastic knitted fabric into the dyeing machine. L, chelating dispersant sodium lignosulfonate 0.7g / L, bath ratio 1:20, then heat up in a water bath at a rate of 1°C / min, when the temperature rises to 70°C, keep warm for 40min, dis...

Embodiment 3

[0043] A method for dyeing rayon elastic knitted fabric, comprising the following steps:

[0044] a) Pre-treatment, arrange the rayon elastic knitting in the desizing machine, add 5g / L of deoiling spirit, 11g / L of soda ash, 8g / L of hydrogen peroxide, the bath ratio is 1:15, and the water bath is heated up at a rate of 1.5°C / min, when the temperature rises to 100°C, keep it warm for 30 minutes, then cool down in a water bath at a rate of 2°C / min, and when the temperature drops to 60°C, discharge the waste water and inject cold water for 20 minutes;

[0045] b) Pre-setting, arrange the pre-treated rayon elastic knitting on the pre-setting machine, the temperature is controlled at 180°C; the speed is 45m / min;

[0046] c) Dyeing, put the pre-shaped rayon elastic knitted fabric into the dyeing machine, add reactive dye 4%owf, leveling agent alkyl polyoxyethylene ether 0.3g / L, and soda ash 1g / L in the water bath at room temperature , chelating dispersant sodium lignosulfonate 1g / L...

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 dyeing method of a rayon elastic knitted fabric, and the method comprises the following steps: pre-treating, preshaping, dyeing, soaping, dehydrating, drying, scutching and shaping to obtain the dyed rayon elastic knitted fabric, according to the method, an oil agent and pulp on the fabric in the pretreating process and dir, dust, pigment and the like adsorbed in the weaving and storage and transportation processes are removed; in the dyeing process, phase heating is adopted, and a reactive dye, a leveling agent, sodium carbonate and a chelating dispersant are added,so that the utilization rate of the dye in the production process is improved, the dyeing is uniform, the color fastness is high, meanwhile, the waste water is little, and the energy consumption is low.

Description

technical field [0001] The invention relates to the technical field of knitted fabric dyeing, in particular to a method for dyeing rayon elastic knitted fabric. Background technique [0002] Dyeing refers to the use of chemical methods or other methods to influence the substance itself to make it colored. Through dyeing, objects can show the colors people need, and colorful life can be used to decorate life. [0003] The current rayon elastic knitting dyeing has many problems such as low dyeing rate, low color fastness, uniformity and low utilization rate of dyestuffs, and unstable dyeing quality. Contents of the invention [0004] Aiming at the deficiencies in the prior art, the object of the present invention is to provide a method for dyeing rayon elastic knitted fabric with uniform dyeing, good color fastness and high dye utilization rate. [0005] The above-mentioned technical purpose of the present invention is achieved through the following technical solutions: a m...

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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IPC IPC(8): D06P1/38D06P1/673D06P1/613D06P5/10D06L1/14
CPCD06L1/14D06P1/38D06P1/6133D06P1/6735D06P5/10
Inventor 张少杰伍二生徐繁荣武镇亚
Owner SHAOXING COUNTY KWONG FUNG PRINTING & DYEING
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