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Flow Chart of Migration Yarn Dyeing Process

Flow Chart of Migration Yarn Dyeing Process
Rana Sohel
Executive Engineer
Sunman Textile Mills Ltd. Chittagong
Cell: +8801912-420118
Email: rsohel07tex@gmail.com



Migration Process:
In previous article we have discussed on typical yarn dyeing process, isothermal yarn dyeing process. In this article I will discuss on flowchart of migration process of yarn dyeing.
Yarn dyeing process
Flow Chart of Migration Process of Yarn Dyeing

Yarn is wetted fairly with 90% water

Chemicals (MA Scour – AIN,Imerol – PCLF,Stabilol-ZM, Securon – 540) are injected for 2 cycle 10-12 min at 40-500C

NaOH(Pearls) is injected for 5-6 min at 500C & the Run for 6 min.

Temperature is raised to 600C & then H2O2 (50% Soln) is injected at 600C for 6 minute

Run time 1000C×48 min.

Cooling at 750C

Hot Drain

Water filling for 6 min & then Over flow is done for 2 cycle (12min) for cooling

Hot wash is done at 800C for 2 cycle (12min)

Drain

90% water filling again overflow is done for 12 min

Peroxide Killer (Reduzol – PK) is Injected at 600C & run for 14 min

Drain

Over flow is done for 6 min to cool the temperature

Drain

Water filling & overflow is done for 10 minute

Acetic Acid is added at normal temperature (36-400C)

Run for 11 min

Water filling & overflow is done for 10 minute

Drain

Bleaching Test (Immersion test)

90% water filling

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 400C

Glauber Salt is mixed with return water in the tank

Glauber Salt dosing is done at 600C & run for 22 min

Dyes is mixed for 10 – 15 min

Colour is Dosed at 400C for 18 minute& then

Run for 3Cycle (18 minute) at 900C(By 1.50C/min)

Cooling at 600C (By 1.50C/min)

Soda is mixed for 10-12 min at 600C & run for 30 min

Soda is dosed for 30 min at 600C

Run for 600C × 60 min

Sample check

If Ok than Drain

Water filling

Overflow for 10 min

Acetic Acid is added at 400C & Run for 1 cycle

Over flow is done for 6-7 minute.

Cottoblanc-NSR is given at 980C & run for 30 min to remove unfix colour

Sample Check

If OK than drain

Over flow for 10 min

Hot wash is done at 700C & Run for 11 min

Drain for 5 min

Over flow for 10 min

Drain for 5 min

Water filling at 36-400C

Run for 5000C×20 min

Over flow for 10 min

Drain

Water Leveling

Zetafix-R (WER) Ablusoft –AC + Oiling –CT -200 + Acetic Acid is mixed for 6 min at 4000C

Run for 18 min at 600C

Drain

Unload