Dyeing Flow Chart of Polyester Cotton | Two Part Dyeing Process

Dyeing sequence of polyester cotton is the combination of polyester and cotton dyeing process. For this reason this dyeing process is called double part dyeing process. In this dyeing process; polyester part is dyed first than cotton part is dyed.

Dyeing flow chart of polyester cotton is given below:

 Carrier and vessel washed by hydrose and caustic at 1000 C for 20 min

Load the package in the carrier and feed in the vessel

Add wetting agent, antifoaming agent, sequestering agent and run at 600 C for 10 min

Water solution drain

Add wetting agent, sequestering agent, caustic soda and hydrogen peroxide and run at 1100 C for single yarn and 1150 C for double yarn for 20 min

Drain

Add peroxide killer and run at 900 C for 10 min

Peroxide check in the package

Drain

Add acetic acid for neutralization and run for 20 min at 500 C

Drain

Take sample and check absorbency

Ok

Dyeing period (Polyester part)

Add leveling agent and acid, run at 600 C for 10 min

PH check

Color mixing at 700 C for 40 min

Color dosing at 600 C for 20 min

Sample check

Ok

Temperature cool down at 780 C 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 800 C for 20 min

Drain

Neutralization by acetic acid at 500 C 20 min

Take sample

Carbonizing by acid for 10-20 min

Neutralization by acetic acid at 500 C for 20 min

Drain

Dyeing of polyester part complete

Dyeing period (Cotton part)

Add wetting agent, antifoaming agent, sequestering agent and run at 600 C for 10 min

Color dosing at 600 C for 20 min

Color migration at 600 C for 30 min

Salt dosing at 600 C for 20 min

Run the machine for 20 min at 600 C with color and salt

Soda dosing at 600 C for 40 min

Cotton dyeing at 600 C for 50 min

Check sample

Ok

Drain

Rinse for 10 min

Add acetic acid for neutralization and run for 10 min at 500 C

Drain

Add washing chemical and run at 900 C for 20 min

Wash sample check

Ok

Drain

Rinse for 10 min

Add fixing chemical and half acetic acid, run at 500 C for 20 min

Add softening agent and rest half acid, run at 600 C for 20 min

Check finished sample

Ok

Drain

It is note that; dyeing sequence of CVC is as same as P/C dyeing. If we want to dye cvc then we can run the process as same the above process sequence.

3 thoughts on “Dyeing Flow Chart of Polyester Cotton | Two Part Dyeing Process

  1. Dear,
    awesome information.each & every articles are so so important for practical work as an engineer. heartiest thanks to all of you.i think you can also provide the technical reason why we will dyeing the polyester part at first,it will be flexible for the viewers.

  2. Very excellent information. i am always happy if there are people who give their knowledge to everybody for free.

    If I would want to print CVC double dyed, how would that work?

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