Method for preparing high dye-uptake anti-decolorization indigo dyeing water from indigo paste
A dye uptake and anti-bleaching technology, applied in the field of indigo dye, can solve the problems of easy fading of printed and dyed items, lack of technical data, color pollution, etc.
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[0024] Example:
[0025] Take 13800kg of clean water and heat it in groups to 90°C-100°C, add plant ash with 30% of the clean water mass, precipitate after stirring, and filter out the dregs; when the soft water is cooled to about 25°C, add 200kg of indigo paste and 150kg of rice wine with a mass fraction of 35%, Stir evenly to prepare an aqueous solution of blue indigo paste; add the prepared blue indigo paste solution into the thermal insulation dyeing pool, cover with a plastic film to seal, and let it stand for fermentation for 10 days; after 72 hours, it is regularly unpacked every day to observe the fermentation of the dyed water and make a good preparation Record. If the solution is blue-brown, it needs to continue to ferment; if the solution is light yellow, you can take a sample and shake it in a white pottery container for observation, and there will be light blue flowing "clouds" in the solution, indicating that the dyed water is fully fermented and active, and beco...
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