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Modifying and dyeing process of cotton fabric

A cotton fabric and modification technology is applied in the field of modified dyeing technology of cotton fabric, which can solve the problems of long dyeing time, difficult dyeing and finishing processing, and great differences in dyeing properties, so as to improve production efficiency, change dyeing performance, shorten the The effect of dyeing process

Inactive Publication Date: 2014-01-01
KUNSHAN WANFENG GARMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, due to the different morphological structure and chemical properties of cotton fiber and wool fiber, their reactivity to acid and alkali is opposite, which brings great difficulties to the dyeing and finishing process. Wool / cotton blended fabrics are usually dyed with two types of dyes, two-bath method or dyeing method. The one-bath method is used to dye two kinds of fibers in blended fabrics separately, the process conditions are difficult to control, and the dyeing time is also longer. At the same time, wool and cotton fibers belong to protein fibers and cellulose fibers respectively, and the dyeing properties are very different, so it is rarely used. Dye one-bath method to dye the same color

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

[0020] A modified dyeing process for cotton fabrics, comprising the steps of:

[0021] (1) Cotton fabric modification: put the cotton fabric into the modifying solution containing 30g / L 3-chloro-2-hydroxypropyltrimethylammonium chloride modifier and 10g / L sodium hydroxide, bath Ratio 1:20, immerse at 60°C for 40 minutes, take it out, rinse with running water for 5-6 minutes, pickle, then wash with water until neutral, and dry naturally;

[0022] (2) Dyeing: Use 1% (owf) dye to prepare a dye solution, put the cotton fabric into the dye solution when the temperature rises to 50°C, adjust the pH=5, raise the temperature at a rate of 2°C / min, and keep it at a constant temperature to 80°C , dyed for 60 minutes, then cooled to room temperature, washed with water, and dried.

Embodiment 2

[0024] A modified dyeing process for cotton fabrics, comprising the steps of:

[0025] (1) Cotton fabric modification: put the cotton fabric into the modifying solution containing 40g / L 3-chloro-2-hydroxypropyltrimethylammonium chloride modifier and 30g / L sodium hydroxide, bath Ratio 1:20, immerse at 40°C for 50 minutes, take it out, rinse with running water for 5-6 minutes, pickle, then wash with water until neutral, and dry naturally;

[0026] (2) Dyeing: use 2% (owf) dye to prepare dye liquor, put the cotton fabric into the dye liquor when the temperature rises to 50°C, adjust the pH=8, raise the temperature at a rate of 2°C / min, and keep the temperature at 90°C , after 40min dyeing, then cooled to room temperature, washed with water, and dried.

Embodiment 3

[0028] A modified dyeing process for cotton fabrics, comprising the steps of:

[0029] (1) Cotton fabric modification: put the cotton fabric into the modifying solution containing 50g / L 3-chloro-2-hydroxypropyltrimethylammonium chloride modifier and 20g / L sodium hydroxide, bath Ratio 1:20, immerse at 50°C for 60 minutes, take it out, rinse with running water for 5-6 minutes, pickle, then wash with water until neutral, and dry naturally;

[0030] (2) Dyeing: use 3% (owf) dye to prepare dyeing solution, put the cotton fabric into the dyeing solution when the temperature rises to 50°C, adjust the pH=9, raise the temperature at a rate of 2°C / min, and keep the temperature at 100°C , dyed for 30 minutes, then cooled to room temperature, washed with water, and dried.

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 relates to a modifying and dyeing process of a cotton fabric. The process comprises the following steps: (1) modifying the cotton fabric, namely placing the cotton fabric in a modifying liquid containing a modifier and sodium hydroxide with the bath ratio of 1:20; dipping at a certain temperature for a certain time; taking out the fabric; flushing the fabric by running water for 5-6 minutes; carrying out acid washing on the fabric; then, washing the fabric till the fabric is neutral; naturally airing the fabric; (2) dyeing, namely preparing dye liquor by a certain amount of dyes; heating the dye liquor to 50 DEG C and placing the cotton fabric in the dye liquor; adjusting the pH; heating at a speed at 2 DEG C / minute to a certain dyeing temperature; maintaining the constant temperature; dyeing for a certain time, then cooling to the room temperature; washing by water and airing. The process provided by the invention has the beneficial effects that the cationic modification is carried out on the cotton fabric, so that the physical property and the chemical property of the cotton fiber are changed, thereby further changing the dyeing property of the cotton fabric; finally, the cotton fabric blended with wool fibers is dyed by using one bath process, so that the dyeing process flow is shortened, and the production efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of textile dyeing and finishing, and in particular relates to a modified dyeing process of cotton fabrics. Background technique [0002] With the development of knitwear to the diversity of raw materials, people are more and more interested in wool and other fiber blended products. These textile products combine the advantages of two or more fibers and have unique product styles. Cotton wool blended products are based on Its characteristic style has huge market prospects. Wool has excellent elasticity and thermal conductivity. Compared with cotton or cotton and chemical fiber blended fabrics, cotton-wool blended and interwoven fabrics are warmer and more comfortable. They not only have good texture and appearance, but also have good cost performance. Cotton / wool blended products The characteristics of the two fibers can be integrated into one, so that the product can obtain a unique style. [0003] However...

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): D06P1/673D06P1/66D06P3/60
Inventor 姚建平
Owner KUNSHAN WANFENG GARMENT
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