Flow Chart of Cotton Dyeing Process

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

Cotton is a soft, fluffy staple fiber. It is a natural and most popular fiber. Cotton is dyed with a range of dye types, including vat dyes, and modern synthetic reactive and direct dyes. Dyeing process of cotton is given below.

Dyed cotton

Cotton Dyeing Steps:

Required amount of water was taken into the machine
↓
The fabric was loaded and run for 5-10 minutes in normal temperature
↓
BOS, FE,CF,H-53 (Scouring Chemicals) were added at a time for 5 minutes
↓
Caustic was added at normal temperature for 5 minutes
↓
Temperature increased at 60 oC
↓
Hydrogen per Oxide(H2O2)was added for 5 minutes
↓
Temperature increased at 95 oC and continue for 1 hrs
↓
Sample check
↓
Cold wash at 40 oC for 5-10 minutes
↓
Hot wash at 95 oC for 5-10 minutes
↓
Required amount of water was loaded
↓
Acetic acid was added
↓
Temperature increased at 80 oC for 15-20 minutes
↓
Cold wash at 40 oC and drain
↓
Water filled and Acetic acid was added
↓
PH check at 4.5
↓
Leveling agent at 60 oC for 5-10 minutes
↓
Salt at 60 oC for 5-10 minutes
↓
Run time 10 minutes
↓
Dyes at 60 oC for 30 minutes
↓
Run time 10 minutes
↓
Check the sample
↓
Soda ash at 60 oC for 40 minutes
↓
Run time 10 minute
↓
check the sample
↓
Colour steam
↓
B D (Bathe Drain)
↓
Wash
↓
Hot wash
↓
Acetic Acid
↓
Run for 20 min
↓
Then unload the garments