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Dyeing Flow Chart of Polyester Cotton | Two Part Dyeing Process

Posted by Textile Fashion Guide: A Dedicated Textile Fashion Education Informations Blog

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.

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Yarn Dyeing
Wet processing Technology


md.al-amin sarkar said...

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.

RAJENDRA SUTHAR said...

Very very useful website for starting yarn dyeing plant

Kurt Russel said...

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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