Pre-treatment & Dyeing process flow chart?


Pre-treatment flow chart of Dyeing

Most textile materials and fabrics require pre treatments before they can be dyed. We use NaOH to remove wax, oil, fats and natural impurities from fabric, this process is called scouring which increase fabric absorbency. We use H2O2 to increase the fabric whiteness, this process is called bleaching. Because fabrics which have been prepared for dyeing must have sufficient absorbency and whiteness.

Fresh water and fabric Load at 45OC
Temperature raise to 60OC
Detergent, Peroxide Stabilizer inject
Run for 5 min
Inject Caustic and run 5 min
Raise temperature to 70OC
H2O2 inject and run 5 min
Temperature raise to 105OC
Run for 30 min
Lower the temperature to80OC
Bath drain
Peroxide killer inject and run 10 min
Rinsing and unload the fabric.


Dyeing process flow chart:
Grey fabric receive from knitting section
Batching
Turning of fabric (only for Single Jersey)
Selection machine no
Fabric loading
Select production program
Select recipe for dyeing
Pretreatment
Dyeing
After treatment
Fabric Unload

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