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
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[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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