| Process | Temperature | Time | |
| Soft Winding: Yarn is transferred to perforated Plastic or Spring Bobbins from paper cone packages. | |||
| Then packages are weighed as per the capacity of yarn dyeing carriers. | |||
| Packages are loaded onto carrier. | |||
| Carrier is then loaded inside yarn dyeing vessel with the help of crane. | |||
| Pre-Treatment | Main vessel is filled with water of room temperature and run for 10 minutes | ||
| Demineralization | 50°C | 20 min | |
| Drain | |||
| Bleaching & Scouring: H2O2 (Universal Bleaching Agent) and other chemicals are added in the bath. Optimum pH 10-11 | 100°C | 45 min | |
| Cooled to 60°C | |||
| Drain | |||
| Rinse | |||
| Drain | |||
| Peroxide Killer: To deactivate the bleaching agent. | 80°C | 20 min | |
| Neutralization: Hot Wash with Acid | 50°C | 20 min | |
| Salt (Glauber Salt) & Dyeing Chemicals are added into the vessel. | 60°C | 20 min | |
| Dyeing | Check pH | ||
| Color Dosing | 60°C | 20 min | |
| Run Time | 10 min | ||
| Color Migration | 80°C | 20 min | |
| Cooling to 60C | |||
| Level Checked | |||
| Soda Dosing | 50°C | 30 min | |
| Dyeing Run | 60°C | 50-60 min | |
| Dyeing Sample is taken, if sample shade matches with required shade, after treatment process can be done. If not, dyes addition is given to match the shade. | |||
| Rinsed with normal water | |||
| After Treatment | Neutralization | 50°C | 20 min |
| Soaping: Needs to be done 1-3 times depending on the amount of dyes used. | 80°-90°C | 20 min | |
| Rinse with cold water | |||
| Wash Sample is checked | |||
| Treatment with Fixing chemicals (If needed) | 50°C | 20 min | |
| Softener | 60°C | 20 min | |
| Drain | |||
| Unload | |||
| Hydro Extraction | 6 min | ||
| Drying with RF Dryer / Steam Dryer: To remove excess water. | |||
| Yarn Conditioning | 24 hours | ||
| Hard Winding | |||
| Packing | |||
| Delivery |
An informative article.
Students can learn a lot from this article.
Thank You