Studying effect of Salt on the shade.
Dye, Glauber salt Na2S04. Stock Paste.
Purpose of Salt in Recipe:
Some time a little amount of salt can raise strength to 10%. So, consequently decreasing dye concentration.
Mild. Oxidizing agent 10 g/Kg
Sodium Bicarbonate 25g/Kg
Alginate Thickener 25g/Kg
Glauber Salt` X g/Kg
Total 1 Kg
Reactive Red Dye (MCT) 30 g/Kg
Stock paste Balance
Total 1 Kg
Printing three fabrics with different pastes as per follow.
1. Glauber Salt in stock paste 0g/Kg (Recommended as Standard)
2. Glauber Salt in stock paste 5g/Kg
3. Glauber Salt in stock paste 10g/Kg
4. Glauber Salt in stock paste 15g/Kg
5. Glauber Salt in stock paste 20g/Kg
Print and dry at 100-110°C.
Treat with Saturated steam at 102°C for 8 min
§ Cold rinse
§ Soap at 60oC With:
1-2 ml/l of Ladipur RSK liq.
§ Hot Rinse
§ Cold Rinse
Glauber Salt 0g/Kg
Glauber Salt 5g/Kg 0.58 Pass 102
Glauber Salt 10g/Kg 0.34 Pass 105
Glauber Salt 15g/Kg 1.31 Fail 111
Glauber Salt 20g/Kg 1.62 Fail 113
Glauber salt is an additional auxiliary to the reactive recipe which can be added to the stock paste to get shade strength little higher but, it also has some disadvantages like extra concentration can cause crunchiness, harshness and also dye glass is not stable with time. Any way! Results of date color are infront of you.