Polyester cotton dyeing sequence is the combination
of polyester and cotton dyeing process in a same bath or vessel. For this
reason this dyeing process is called double part dyeing process. In this dyeing
process, at first Polyester part is dyed & then Cotton part is Dyed.
Dyeing flow chart of polyester cotton is given
below:
Carrier and vessel washed by Hydrose and caustic at 100ºC
/ 20 min
↓
Load the package in the carrier and feed in the
vessel
↓
Add wetting agent, Antifoaming agent, sequestering
agent and run at 60ºC / 10 min
↓
Water Solution drain
↓
Add Wetting Agent, Sequestering Agent, Caustic Soda
and Hydrogen Peroxide and run at 110ºC for single yarn and 115ºC for double
yarn for 20 min
↓
Drain
↓
Add peroxide killer and run at 90ºC/10 min
↓
Peroxide check in the package
↓
Drain
↓
Add acetic acid for neutralization and run at 50ºC/20
min
↓
Drain
↓
Take sample and check absorbency
↓
Ok
↓
Dyeing period (Polyester part)
↓
Add leveling agent and acid, run at 60ºC/10 min
↓
PH check
↓
Color mixing at 70ºC/40 min
↓
Color dosing at 60ºC/20 min
↓
Sample check
↓
Ok
↓
Temperature cool down at 78ºC and drain
↓
Hot wash for 10 min
↓
Rinse for 15 min for light shade and 25 min for dark
shade
↓
Add Hydrose, soda ash, run at 80ºC/20 min
↓
Drain
↓
Neutralization by acetic acid at 50ºC/20 min
↓
Take sample
↓
Carbonizing by acid for 10-20 min
↓
Neutralization by Acetic acid at 50ºC/20 min
↓
Drain
↓
Dyeing of polyester part complete
↓
Dyeing period (Cotton part)
↓
Add Wetting agent, Antifoaming agent, Sequestering
agent and run at 60ºC/10 min
↓
Color dosing at 60ºC/20 min
↓
Color migration at 60ºC/30 min
↓
Salt dosing at 60ºC/20 min
↓
Run the machine at 60ºC/20 min with color and salt
↓
Soda dosing at 60ºC/40 min
↓
Cotton dyeing at 60ºC/50 min
↓
Check sample
↓
Ok
↓
Drain
↓
Rinse for 10 min
↓
Add acetic acid for neutralization and run at 50ºC/10
min
↓
Drain
↓
Add washing chemical and run at 90ºC/20 min
↓
Wash sample check
↓
Ok
↓
Drain
↓
Rinse for 10 min
↓
Add fixing chemical and half acetic acid, run at 50ºC/20
min
↓
Add softening agent and rest half acid, run at 60ºC/20
min
↓
Check finished sample
↓
Ok
↓
Drain
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