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Dyeing processing method of knitted denim fabric

A technology of knitted denim and processing method, applied in the field of textile processing, can solve problems such as environmental ecological pollution, hydrogen sulfide odor, worker health hazards, etc., and achieve the effects of stable cloth quality, soft color and improved color fastness

Active Publication Date: 2016-12-21
SHENGZHOU SHENGTAI KNITTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional denim fabrics need to use a lot of water, energy and various chemical additives in the production process, especially when using traditional sulfur dyes, a large amount of sodium sulfide and alkali need to be added to restore them, and hydrogen sulfide will be generated during use Odor, harmful to the health of workers, and 15% to 20% of sulfide in wastewater will cause serious environmental and ecological pollution problems

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

[0015] Example 1: The dyeing process of processing 30S / 1 pure cotton raw yarn into dark-colored (black, navy blue, blue) 30S / 1 knitted jacquard denim fabrics is as follows:

[0016] (1) Knitting: knitting 30S / 1 pure cotton raw yarn into denim-like jacquard gray fabric on a circular knitting machine;

[0017] (2) Pre-treatment: Use conventional pre-treatment procedures to remove various impurities and oils on the gray cloth to ensure good permeability and hydrophilicity of the cloth surface;

[0018] (3) Put the knitted denim fabric that has undergone conventional pretreatment into the overflow dyeing machine, control the weight-to-bath ratio of the fabric and water to 1:10, and add Indosol E-50 3% (o.w.f) to the water, Keep warm at 25°C for 30 minutes, then raise the temperature to 60°C, and keep warm for 10 minutes, then add 2g / L soda ash, continue to keep warm for 30 minutes, then wash the fabric with overflow water and drain;

[0019] (4) Control the weight bath ratio of k...

Embodiment 2

[0022] Embodiment 2: The dyeing process of processing 30S / 1 pure cotton raw yarn into light-colored (brown, yellow, red) 30S / 1 jacquard denim fabric is as follows:

[0023] (1) Knitting: knitting 30S / 1 pure cotton raw yarn into denim-like jacquard gray fabric on a circular knitting machine;

[0024] (2) Pre-treatment: Use conventional pre-treatment procedures to remove various impurities and oils on the gray cloth to ensure good permeability and hydrophilicity of the cloth surface;

[0025] (3) Put the knitted denim fabric that has undergone conventional pretreatment into the overflow dyeing machine, control the weight-bath ratio of the fabric to water to be 1:7, and add Indosol E-50 4% (o.w.f) to the water, Keep warm at 25°C for 30 minutes, then raise the temperature to 60°C, and keep warm for 10 minutes, then add 1g / L soda ash, keep warm for 20 minutes, wash the fabric with overflow water and drain;

[0026] (4) Control the weight-bath ratio of knitted denim fabric and wate...

Embodiment 3

[0029] Example 3: The dyeing process of processing 30S / 1 pure cotton raw yarn into dark-colored (black, navy blue, blue) 30S / 1 knitted jacquard denim fabrics is as follows:

[0030] (1) Knitting: knitting 30S / 1 pure cotton raw yarn into denim-like jacquard gray fabric on a circular knitting machine;

[0031] (2) Pre-treatment: Use conventional pre-treatment procedures to remove various impurities and oils on the gray cloth to ensure good permeability and hydrophilicity of the cloth surface;

[0032] (3) Put the knitted denim fabric that has undergone conventional pretreatment into the overflow dyeing machine, control the weight-to-bath ratio of the fabric and water to 1:9, and add 3.5% (o.w.f) of Indosol E-50 to the water, Keep warm at 25°C for 30 minutes, then raise the temperature to 60°C, and keep warm for 10 minutes, then add 1.6g / L soda ash, keep warm for 25 minutes, wash the fabric with overflow water and drain;

[0033] (4) Control the weight bath ratio of knitted deni...

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 processing method of a knitted denim fabric. The method is characterized in that the whole dyeing process specifically includes the steps of: knitting, pretreatment, pre-fixation, dyeing, dehydration, scotching, drying, color fixing and shaping. Through treatment of the knitted denim fabric with pre-fixation, dyeing, and color fixing and shaping three processes, the reduction process necessary to the traditional of sulfur dye is abandoned, the whole dyeing processing does not involve sulphide, simplifies and omits some necessary processes and a lot of environmentally-unfriendly chemical products required by the traditional process, the whole dyeing processing process is short and efficient, energy saving and environment-friendly, and the processed knitted denim fabric has rich and soft colors, stable cloth cover quality, novel and unique appearance, and has good visual and tactile affinity.

Description

technical field [0001] The invention relates to the processing of denim fabrics in the field of textile processing, in particular to a dyeing and processing method of knitted denim fabrics. Background technique [0002] Denim fabric is very popular among consumers because of its chic, rough and straightforward style, which is suitable for daily wear of all age groups. With the increase and fullness of denim fabric colors, in recent years, the application of sulfur dyes with similar fastness and performance to indigo dyes has become a trend in the development of denim fabrics. However, as the market and enterprises have higher requirements for the color design of denim fabrics, the environmental protection problems of denim fabrics have gradually become prominent. Traditional denim fabrics need to use a lot of water, energy and various chemical additives in the production process, especially when using traditional sulfur dyes, a large amount of sodium sulfide and alkali need...

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): D06P1/30D06P1/673D06P3/60D06P5/02D06P5/08D06P5/10D06M11/30D06B9/02D06B9/04
CPCD06B9/02D06B9/04D06M11/30D06P1/305D06P1/6735D06P3/6025D06P5/02D06P5/08D06P5/10
Inventor 徐磊刘永强梁亮龙兵初赖建忠戴君波
Owner SHENGZHOU SHENGTAI KNITTING
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