Bio-Scouring Dyeing Process:
Bio-Scouring can simply be defined as the application of living organisms and their components to remove the natural and added impurities. With the increasingly important requirement for textile industries to reduce pollution in textile production scouring is used. For the same purpose, bio-scouring dyeing is used. A flowchart of the Bio-scouring Dyeing is given below.
Flow Chart of Bio-scouring Dyeing
Prebleaching CEL 110 &95:
Machine filling with water at normal Temperature
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Fabric loaded at normal temperature (36-400C)
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Chemicals (ContiponS(10% Soln)Jinsofter BSK, Ablutex-AP-750 (42% Soln, Reduzin AC-BL-100 ) Dozing at 50 0C& then Run for 4 min
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H2O2 (50% Sol n) is added at 600C within 3-4 minute
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NaOH is added for 7 min at 700C
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Run time 1100C×20 min.
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Cooling at 95-80-95 0C & then aquachron is done
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Water is leveled
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Per oxide Killer (Raduzin-THN (50%Soln)) is added at 800C & run for 10 min,
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Per oxide is checked (if H2O2= O)
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Aquachron is done at 550C
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Water is leveled
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Acetic Acid is added at 550C for 5 min
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PH is Checked (PH=4.8)
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Bio-scouring dyeing : (Medium Shade)
MA Scour AIN (Prep-IN) is added at 500C and run for 3-5 min
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Temp is raised to 600C & run for 5 min
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Salt is added at 600C for 10 min
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PH + SG is Checked (PH= 6.6 & SG = 1.008 )
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If ok, Dyes(Remazol Red-3BS-A-150G, Remazol Yellow- 3RS,Remazol B Blue ) is mixed up by 20 min added at 600C & then run for 10 min.
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Soda is added at 600C & run for 45 min
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After that Sample is checked
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If shade is not “OK” then it’s checked after every 15 min until matching
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If shade is “OK”
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Drain
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Water filling & Wash is done at 600C
Soaping Bio-scouring:
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Green Acid is added at 600C & run for 43 min
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MA Disp-ARE (Soap – Rea) is added at 900C & run for 7 min
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Aquachron is done
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Hot wash at 900C & run for 9 min
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Aquachron is done
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Drain out
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Softening:
Acidic acid + Bevsoft-CF is added for 10 min at 400C & run for 20 min
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Unload
Author of this Article: Rana Sohel Executive Engineer Sunman Textile Mills Ltd. Chittagong Cell: +8801912-420118 Email: rsohel07tex@gmail.com