All about flow chart of textiles

Process Flow Chart of Topping in Reactive Dyeing

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




Topping in Dyeing:
Topping is the addition of color to the fabric after completing one dyeing process. Sometimes it is found that the dyed fabrics do not match with the standard or buyer approved swatch then it needs to re dyeing, this process is called topping. Topping is similar to full dyeing process. Normally topping is done in reactive dye for cotton dyeing. Flowchart of topping in cotton fabric dyeing is given below.
Topping in Dyeing
Flow Chart of Topping in Reactive Dyeing

Water fill at required amount

Fabric loaded and running for 10 min.

Drain out

Water was filled at required amount

Acetic acid was added for 5 min.

Temperature increased at 60 0C

Run for 20 min.

Rinsing for 10 min.

Drain out

Require amount of water filled

Wetting agent was added

Temperature increased at 95 0C

Run for 30 min.

Ringing for 20 min.

Leveling agent added for 10 min.

Salt dosing

Color dosing for 30 min

Run for 10 min

Soda dosing

Run for 1 hrs

Temperature increase at 60 0C for 5 min

Run for 10 min

Shade check (OK)

Rinsing for 20 min.

Drain out

Acetic acid was added for neutralization for 10 min

Shade check (ok)

Hot wash at 70 0C

Rinsing for 10 min.

Fixing agent was added for 10 min

Rinsing for 10 min.

Water was filled at required amount

PH check at 5.5

Softener was added

Final shade checks and run for 20 min

Unload the dyed fabric