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Polyester fabric dyeing technology

A technology of polyester fabric and process, applied in the field of polyester fabric dyeing process, can solve the problems such as the dyeing effect needs to be improved, the procedure is complicated, and the environmental protection needs to be improved, so as to achieve the effect of saving caustic soda consumption, simplifying the processing process and saving consumption

Active Publication Date: 2018-10-16
PENGLAI JIAXIN DYES & CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The procedures of the existing polyester fabric dyeing process are relatively complicated, and the environmental protection needs to be improved, and the dyeing effect needs to be improved

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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  • Polyester fabric dyeing technology
  • Polyester fabric dyeing technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Disperse Scarlet HA-G Dyed Polyester Knitted Fabric

[0049] Polyester fabric dyeing process provided by the invention, the steps are as follows:

[0050](1) High-temperature and high-pressure dyeing of polyester knitted fabrics: the amount of dyestuff is 2% of the weight of the fabric, and the leveling agent is 2g / L (NICCASUNSOLT 7000Z, Zhejiang Rihua Chemical Co., Ltd.); prepared according to the weight ratio of dye liquor and fabric at 20:1 For the dyeing solution, heat up to 90°C at 2°C / min on the high-temperature and high-pressure dyeing machine, and keep warm for 15 minutes; then raise the temperature to 120°C at a heating rate of 2°C / min, and keep warm for 45 minutes; after dyeing, cool down at a cooling rate of 4°C / min To below 80 ℃, discharge the dye liquor.

[0051] (2) Alkali reduction of dyed polyester knitted fabric: inject 5g / L caustic soda solution into the dyeing vat, the weight ratio of caustic soda solution to fabric is 20:1, raise the temperature to ...

Embodiment 2

[0063] Disperse Scarlet HA-G Dyed Polyester Knitted Fabric

[0064] Polyester fabric dyeing process provided by the invention, the steps are as follows:

[0065] (1) High temperature and high pressure dyeing of polyester knitted fabric: the amount of dyestuff is 2% of the weight of the fabric, and the leveling agent is 1g / L NICCASUNSOLT 7000Z (Zhejiang Rihua Chemical Co., Ltd.); at room temperature, the weight ratio of dyeing liquor to fabric is 20:1 Prepare the dyeing solution, raise the temperature to 100°C at 1°C / min on the high-temperature and high-pressure dyeing machine, and keep warm for 20 minutes; then raise the temperature to 130°C at a heating rate of 1°C / min, and keep warm for 60 minutes; after dyeing, cool down at a rate of 4°C / min Cool down to below 80°C and discharge the dye liquor.

[0066] (2) Alkali treatment of dyed polyester knitted fabric: inject alkaline solution into the dyeing vat, the weight ratio of alkaline solution to fabric is 20:1, and the alkali...

Embodiment 3

[0079] Disperse Scarlet HA-G Dyed Polyester Knitted Fabric

[0080] Polyester fabric dyeing process provided by the invention, the steps are as follows:

[0081] (1) High-temperature and high-pressure dyeing of polyester knitted fabrics: the amount of dyestuff is 0.1% of the weight of the fabric, and the leveling agent is 0.5g / LNICCA SUNSOLT 7000Z (Zhejiang Rihua Chemical Co., Ltd.); at room temperature, the weight ratio of the dye liquor to the fabric is 20: 1 Prepare the dyeing solution, raise the temperature to 70°C at 0.5°C / min on the high-temperature and high-pressure dyeing machine, and keep it warm for 20 minutes; then raise the temperature to 130°C at a heating rate of 1°C / min, and keep it warm for 60 minutes; after dyeing, cool down at 0.5°C / min The temperature is lowered to below 80°C, and the dye liquor is discharged.

[0082] (2) Alkali treatment of dyed polyester knitted fabric: inject alkaline solution into the dyeing vat, the weight ratio of alkaline solution t...

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 the field of textile dyeing and finishing, and concretely relates to a polyester fabric dyeing technology. The polyester fabric dyeing technology comprises the following steps: carrying out high-temperature and high-pressure dyeing on a polyester fabric by a high-alkali resistance disperse dye, then processing the dyed polyester fabric with an alkaline solution, and then carrying out reduction washing and water washing, wherein the pH value of the alkaline solution is 9 or above. The polyester fabric dyeing technology selecting the high-alkali-resistance disperse dye breaks the conventional process flow of alkali lye treatment, water washing, high-temperature and high-pressure dispersion dyeing, reduction cleaning and water washing processing of the polyester fabric, and reconstructs a process flow of high-temperature and high-pressure dispersion dyeing, alkali lye processing, reduction cleaning and water washing, so the color depth of the dyed polyester fabricis significantly improved, the alkali reduction efficiency of the polyester fabric is improved, the waste of water and water pollution in the dyeing technology are reduced, and energy saving and environmental protection are facilitated.

Description

technical field [0001] The invention relates to the field of textile dyeing and finishing, in particular to a polyester fabric dyeing process. Background technique [0002] Polyester is a hydrophobic fiber, its macromolecules are densely arranged, and its glass transition temperature is high. Therefore, polyester fabrics are usually dyed with disperse dyes under high temperature and high pressure conditions. In addition, polyester fabrics are usually treated with lye before dyeing to improve the fabric's shortcomings of hard hand and poor touch. Since the conventional disperse dyes used in polyester fabric dyeing contain hydroxyl, amino, ester, amido, cyano and other groups, too high or too low pH of the dye solution during high temperature and high pressure dyeing will lead to hydrolysis of the dye or color change, so it is necessary to Keep the pH in the range of 5-6. Polyester fabrics usually require reduction cleaning after dyeing to remove floating colors on the surfa...

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): D06P1/16D06P3/54D06P1/673
CPCD06P1/0032D06P1/16D06P1/6735D06P3/54
Inventor 许长海孙铭璞张善生王小艳杨军海荆丽丽张晓晓孙昌杜金梅周嫦娥陈浩
Owner PENGLAI JIAXIN DYES & CHEM
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