Flow Chart of Migration Yarn Dyeing Process

Migration Process: 

In the previous article, we have discussed on typical yarn dyeing process, the isothermal yarn dyeing process. In this article, I will discuss the flowchart of the migration process of yarn dyeing.

Flow Chart of Migration Process of Yarn Dyeing

Yarn wets fairly with 90% water
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Chemicals (MA Scour – AIN, Imerol – PCLF, Stabilol-ZM, Securon – 540) injected for 2 cycles 10-12 min at 40-500 ºC
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NaOH(Pearls) is injected for 5-6 min at 500 ºC & the Run for 6 min.
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Temperature is raised to 600 ºC & then H2O2 (50% Soln) is injected at 600 ºC for 6 minute
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Run time 1000 ºC×48 min.
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Cooling at 750 ºC
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Hot Drain
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Water filling for 6 min & then Overflow is done for 2 cycles (12min) for cooling
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Hot wash has done at 800 ºC for 2 cycles (12min)
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Drain
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90% water filling again overflow done for 12 min
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Peroxide Killer (Reduzol – PK) Injected at 600 ºC & run for 14 min
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Drain
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Overflow has done for 6 min to cool the temperature
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Drain
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Water filling & overflow has done for 10 minute
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Acetic Acid is added at normal temperature (36-400 ºC)
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Run for 11 min
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Water filling & overflow is done for 10 minute
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Drain
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Bleaching Test (Immersion test)
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90% water filling
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Chemicals {Jinlev-RLA-225 + Hostapol –EH Liq + Antisil –Conz + MA Scour Ain (Prep-IN) }are mixed in the mixing tank &½ of the chemicals are injected & run for 6 min at 400 ºC
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Glauber Salt mixed with return water in the tank
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Glauber Salt dosing is done at 600 ºC & run for 22 min
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Dyes mixed for 10 – 15 min
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Colour is Dosed at 400 ºC for 18 minutes & then
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Run for 3Cycle (18 minute) at 900 ºC(By 1.50C/min)
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Cooling at 600C (By 1.50 ºC/min)
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Soda is mixed for 10-12 min at 600 ºC & run for 30 min
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Soda dosed for 30 min at 600C
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Run for 600 ºC × 60 min
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Sample check
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If Ok than Drain
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Water filling
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Overflow for 10 min
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Acetic Acid is added at 400 ºC & Run for 1 cycle
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Overflow has done for 6-7 minutes.
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Cottoblanc-NSR is given at 980 ºC & run for 30 min to remove unfix color
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Sample Check
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If OK than drain
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Overflow for 10 min
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Hot wash is done at 700 ºC & Run for 11 min
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Drain for 5 min
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Overflow for 10 min
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Drain for 5 min
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Water filling at 36-400 ºC
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Run for 5000 ºC×20 min
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Overflow for 10 min
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Drain
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Water Leveling
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Zetafix-R (WER) Ablusoft –AC + Oiling –CT -200 + Acetic Acid mixed for 6 min at 4000 ºC
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Run for 18 min at 600 ºC
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Drain
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Unload