Two-bath dyeing process
A two-bath method and process technology, which is applied in the field of fabric dyeing, can solve the problems of sewage treatment that cannot meet the standard discharge, high COD of wastewater, and use of caustic soda.
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[0023] Example one:
[0024] First, for wool fiber dyeing, put the blended fabric in a dyeing container, add the dyeing auxiliaries and dyes prepared in step (4) to the dyeing container at room temperature, keep it at room temperature for 15-25 minutes, and then use 0.8-1.2℃ / Min heating rate is raised to 95-98℃ and kept for 40-60min, and then cleaned. After cleaning, add soda ash for the first time and control the pH value of the water bath, then raise to 80-85℃ and keep it for 25-35min, then clean again After cleaning again, add soda ash for the second time and control the pH value, and then increase the temperature to 80-85℃ and keep it for 25-35min, and then wash, finally add glacial acetic acid and increase the temperature to 40-45℃ and keep it for 10-20min, and then After the heat preservation is completed, softener is added for softening treatment, and the dyed wool fiber is obtained out of the vat; then for the dyeing of the polylactic acid fiber, the dyeing of the polyla...
Example Embodiment
[0038] Embodiment two:
[0039] A two-bath dyeing process is carried out according to the following steps:
[0040] Firstly, for wool fiber dyeing, put the blended fabric into a dyeing container, add dyeing auxiliaries and dyes to the dyeing container at room temperature, keep it at room temperature for 15-25 minutes, and then heat up to 95 at a rate of 0.8-1.2°C / min -98℃ and keep the temperature for 40-60min, then wash, after washing, add soda ash for the first time and control the pH value of the water bath, then raise the temperature to 80-85℃ and keep it for 25-35min, wash again, and wash it again after the second Add soda ash at one time and control the pH value, then increase the temperature to 80-85℃ and keep it for 25-35min, then wash, finally add glacial acetic acid and increase the temperature to 40-45℃ and keep it for 10-20min, then add softener to soften after the insulation Processing, out of the vat, to obtain dyed wool fibers; then for the dyeing of the polylactic a...
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