Table of Contents
Cotton Yarn
In dyeing; the 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 the basic sequence is almost the same. Now I like to give a process flow chart of dyeing for medium and dark shades.
Flow Chart of Cotton Yarn Dyeing Process
Yarn dyeing is a step-by-step process. The following is the flow chart of the cotton yarn dyeing process for medium and dark shades. They are-
Carrier and vessel washed by hydrose and caustic at 1000 C for 20 min
↓
Load the package in the carrier and feed it to the vessel
↓
Add wetting agent, antifoaming agent, and a 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 the sample
↓
Ok
↓
Dyeing period
↓
Add salt, wetting agent, antifoaming agent, sequestering agent, and run a
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 proof, he can apply this technique in the yarn dyeing process for producing medium and dark shades on 100% cotton. Please, let me know the results.
I’m a textile engineer who is passionate about writing about the textile industry. With a B.Sc. in Textile Engineering, I’ve gained extensive knowledge about textile manufacturing and sustainable practices. My focus revolves around refining manufacturing processes, maintaining product quality, and staying updated on the latest textile technology advancements. If you’re interested in collaborating on articles or have any pieces you’d like to submit, let’s connect and discuss further!
Good technique thank you