One-bath dyeing process for pre-treatment, dyeing and post-treatment of polyester

A pre-treatment and polyester technology, which is applied in the dyeing process of polyester fabrics, can solve the problems of high water consumption, high energy consumption, and many production processes, and achieve the goals of reducing water consumption, improving dyeing and finishing efficiency, and reducing air and water pollution. Effect

Inactive Publication Date: 2019-11-01
ZHEJIANG JIAMING DYEING & FINISHING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

We can see that in the existing polyester fiber dyeing and finishing process, at least six bath processing procedures are required, which presents problems such as many prod

Method used

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  • One-bath dyeing process for pre-treatment, dyeing and post-treatment of polyester
  • One-bath dyeing process for pre-treatment, dyeing and post-treatment of polyester

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0019] Example 1

[0020] First put the cloth into the dyeing bath, the liquor ratio is 1:5, and adjust by adding degreaser, high temperature resistant degreaser BOR 2 g / l, non-ionic leveling agent LD 1 g / l and glacial acetic acid 0.5 g / l under normal temperature conditions pH 4-5, add Anoqi dye for level dyeing for 5 minutes; then heat up to 130°C at a temperature increase rate of 1°C / min, keep the temperature for 40 minutes; then cool down to 70°C-75°C at a temperature decrease rate of 1°C / min, directly Add 3 g / liter of soda ash, adjust the pH to 9.5-10.5, add 4 g / liter of sodium hydroxide, then heat up to 90°C at a temperature rise rate of 1°C / min, keep the temperature for 25 minutes; finally cool down at a temperature drop rate of 1°C / min To 60°C, drain.

Example Embodiment

[0021] Example 2

[0022] First put the cloth into the dyeing bath, the liquor ratio is 1:5, and adjust by adding degreaser, high temperature resistant degreaser BOR 2 g / l, non-ionic leveling agent LD 1 g / l and glacial acetic acid 0.5 g / l under normal temperature conditions pH 4-5, level dyeing with Anoqi dye for 5 minutes; then heat up to 130°C at a heating rate of 1°C / min, keep the temperature for 20 minutes; then cool down to 70°C-75°C at a cooling rate of 1°C / min, directly Add 4 g / liter of soda ash, adjust the pH to 9.5-10.5, add 6 g / liter of sodium hydroxide, then heat up to 80°C at a temperature rise rate of 1°C / min, keep the temperature for 30 minutes; finally cool down at a temperature drop rate of 1°C / min To 60°C, drain.

Example Embodiment

[0023] Example 3

[0024] First put the cloth into the dyeing bath, the liquor ratio is 1:5, and adjust by adding degreaser, high temperature resistant degreaser BOR 2 g / l, non-ionic leveling agent LD 1 g / l and glacial acetic acid 0.5 g / l under normal temperature conditions pH 4-5, add Anoqi dye for level dyeing for 5 minutes; then heat up to 130°C at a heating rate of 2°C / min, keep the temperature for 40 minutes; then cool down to 70°C-75°C at a cooling rate of 1°C / min, directly Add 3 g / liter of soda ash, adjust the PH to 9.5-10.5, add 4 g / liter of sodium hydroxide, then heat up to 100°C at a heating rate of 2°C / min, keep the temperature for 20 minutes; finally, cool down at a cooling rate of 1°C / min To 60°C, drain.

[0025] The cost saved per ton of polyester fabric treated by the process of the invention is as follows:

[0026]

[0027] Comparison of various performance indexes between the process of the present invention and the conventional process

[0028]

[0029] It can be s...

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Abstract

The invention relates to textile dyeing and finishing technologies, in particular to a dyeing process for polyester fabrics. The provided one-bath dyeing process for pre-treatment, dyeing and post-treatment of polyester aims to achieve the effects that the time consumption is low, the production efficiency is high, the water, electricity and steam consumption is low, and the dyeing and finishing efficiency can also be improved. A one-bath method for same-bath degreasing, dyeing and reduction is adopted to complete pre-treatment, dyeing and post-treatment. A degreaser with the PH value of 7 belongs to nonionics, the PH value of a leveling agent is 7, the PH value of ice vinegar is 2-3, and the pH of a dyeing solution can reach 4-5. Co-bathing does not affect dyeing, dyeing and degreasing are carried out at the same time, the temperature is lowered to 70-75 DEG C after dyeing, sodium carbonate is added directly for neutralization, and the pH is adjusted to 9.5-10.5 to ensure that a stabilizing effect and a better reducing effect are achieved after a reducing agent is added, so that higher better fastness is obtained.

Description

Technical field [0001] The invention relates to textile dyeing and finishing technology, in particular to a dyeing process of polyester fabric. Background technique [0002] Polyester fabric is a kind of chemical fiber garment fabric used in daily life. The general processing method is divided into three stages: pre-treatment, dyeing and post-treatment. Among them, the pre-treatment process of polyester knitted fabric is mainly degreasing. After the pre-treatment is completed, after the dyeing is completed, it generally includes one-step reduction cleaning and one-step washing and neutralization. And one-step hot water washing and other processes; because polyester fiber feels hard, general polyester fabrics need to be softened. We can see that the existing polyester fiber dyeing and finishing process has to go through at least six baths, which presents many production processes, high water consumption, high energy consumption, low productivity, etc., resulting in serious enviro...

Claims

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Application Information

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IPC IPC(8): D06P1/00D06P1/44D06P1/653D06P1/673
CPCD06P1/0032D06P1/445D06P1/6533D06P1/6735D06P1/67375
Inventor 施道妃莫东海蒋亚群莫仁江蒋志杰莫荣明
Owner ZHEJIANG JIAMING DYEING & FINISHING CO LTD
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