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Description
Customers can buy from us a remarkable range of Direct Dyes. Made using qualitative ingredients, the dyes we offer are extensively used in the textile, leather and paper industries. The products we offer are widely utilized in a variety of dyeing applications such as on cotton, silk and viscose fabrics. All our products are known in the market for their easy application, excellent brightness & fastness and leveling properties. For having excellent dyeing result, it is essential to pre-treat the offered dyes. Pretreatment is essential to get better depth and fair brightness in grey fabrics so as to keep these free from sizing materials and spinning oil. This is possible by boiling the grey with alkaline material or bleaching in case of pale shades.
Dissolving the dyestuff
Dyeing Method:
Dissolving the dyestuff
- The dyestuff is pasted with the cold water and dissolved by pouring 50 to 100 times boiling water of its weight, while stirring
- The solution may be boiled to ensure complete dissolution
- For certain dyes, which are dyes from and alkaline dye bath, it is good to add half its weight of soda ash, while pasting with water
- Set the dye bath at 50°-60° C temperature with dyes solution, salt and soda ash
- Run for 15 Minutes
- Gradually raise temperature to 90°-95° C
- Again run for 30 to 45 minutes
- To overcome unlevel dyeing salt may be added in installments after about 15 minutes of initial dyeing prior to raising the dye bath temperature
It is ideal to start dyeing at boil, dye for 15 to 20 minutes, when the dyestuff possesses maximum affinity at temperature below boil. After this, add salt in two installments to exhaust the bath and continue dyeing in a cooling bath (60° c) for 15 to 20 minutes. By following this method, one can dye chrysophinine G, Blue 2B, Green B and Yellow 5GLL.
Jigger dyeing:- First end: 1/2 quantity of dyes solution, soda ash and 1/4 quantity of Salt at room temperature
- Second end: 1/2 quantity of dyes solution, 1/4 quantity of Salt at 60°)c, raised to 80°c
- Third end: 1/4 quantity of salt
- Fourth end: 1/4 quantity of salt
In this method, the temperature is raised to boil and four ends are given at boil. After this, the dye-liquor is drained and further two ends are given in cold water
After treatment:
- Fastness to wet treatments can be improved by after treatment with 1-2% Cationic dye fixing agents at 40-50° c for minutes
- In case of some selected dyes, light fastness can be improved by after treatment with:-
- 1-2% Copper sulphate
- 1-2% Actic (30%) at 80° c temperature
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Direct Dye