Three-in-one yarn fast bleaching method
A three-in-one yarn technology, applied in bleaching products, liquid/gas/steam yarn/filament treatment, textiles and papermaking, etc., can solve the problems of large water resources, long process time, and different bleaching processes, and achieve Hairiness assurance, reduction of hairiness, and stable quality
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Embodiment 1
[0035] Dye a cylinder of cheese in a dyeing vat with a diameter of 1800mm, the yarn weighs 850kg, and the liquor ratio is 3.3;
[0036] The whiteness requirement is: 155 (computer value);
[0037] The cylinder yarn production process is as follows:
[0038] 1. After the dyeing vat is filled with water to a low water level, the main pump starts to run, and the motor speed of the main pump is set at 600 rpm;
[0039] 2. Select the scouring and bleaching formula suitable for high temperature and high pressure;
[0040] Hydrogen peroxide (concentration is 27.5%): 7g / L;
[0041] Hydrogen peroxide stabilizer: 0.8g / L;
[0042] Chelating agent: 1g / L;
[0043] Refining agent: 1g / L;
[0044] NaOH (solid, 100% pure): 2g / L;
[0045] Fluorescent whitening agent: 0.5%
[0046] 3. The dyeing vat is pumped into the chemicals in the scouring and bleaching formula at one time and then heated up;
[0047] 4. Heat the dyeing vat to 115°C and keep it warm for 20 minutes before draining wat...
Embodiment 2
[0052] In a dyeing vat with a diameter of 1800mm, a vat of beam yarn is cast and dyed, the yarn weighs 600kg, and the liquor ratio is: 4.7;
[0053] The whiteness requirement is: 160 (computer value);
[0054] The cylinder yarn production process is as follows:
[0055] 1. After the dye vat is filled with water to a low water level, the main pump starts to run, and the motor speed of the main pump is set at 800 rpm;
[0056] 2. Select the scouring and bleaching formula suitable for high temperature and high pressure:
[0057] Hydrogen peroxide (concentration is 27.5%): 8g / L;
[0058] Hydrogen peroxide stabilizer: 0.8g / L;
[0059] Chelating agent: 1g / L;
[0060] Refining agent: 1g / L;
[0061] NaOH (solid, 100% pure): 2g / L;
[0062] Fluorescent whitening agent: 0.6%
[0063] 3. The chemical additives in the scouring and bleaching formula are pumped into the dyeing vat at one time and then heated up;
[0064] 4. Heat the dyeing vat to 115°C and keep it warm for 25 minutes b...
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