Dyeing Sequence of 100% Cotton for Medium and Dark Shade | Yarn Dyeing Process

In dyeing; process sequence can be vary depending on the shade of the material which is required to produce. I have given a process sequence for the light shade dyeing but basic sequence is almost same. Now I like to give a process flow chart of dyeing for medium and dark shade.

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

Absorbency test of sample

Ok

Dyeing period

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

PH check

Color dosing at 600 C for 30 min

Color migration at 600 C for 30 min

Migration package check

Ok

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 950 C for 20 min

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

So, If anyone wants to get the prove, he can apply this technique in yarn dyeing process for producing medium and dark shade on 100% cotton. Please, let me know the results.

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