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BIFUNCTIONAL DYES ('ME' DYES)
ME dyes ae low temp. high exhaust reactive dyes suitable for dyeing, padding and printing of all types of cellulosic material These dyes offer high grade of all round fastness properties. Theyoffer excellent leveling properties and excellent alkali stability, These dyes gives exceptionally good result on various textile printing including on discharge printing except RED which gives slight yellowsh stain, Fixation temp of these dyes Is 60-65°C.
Set the dye bath at room temp. add predissolved Glauber's salt, now enter the material and run for 20 minutes, add half amount of dissolved Glauber's salt and continue dyeing now gradually raise temp to 60-65°C and add remaining amount of predisposed Glauber's salt after reaching 60°C temp. Continue dyeing for 15 min. further, now add soda ash solution and continue dyeing for 60 min. maintaining temp.60-65°C and wash the material
KEY TO ABBREVIATIONS:
LIGHT 1-7 in increasing order (7 represents highest fastness
OTHER: 1-5 in increasing order (5 represents highest fastness
LS : Less Suitable, NS ; Not SUitable, S Suitable
BL: Blue, BK! Black,
Dischargeability : G - Good, F - Fair, P - Poor
PRINTING
These dyes react with ceflulosive fibers in presence of alkali & heat. The direct chemical linkage with result there by accounts for excellent fastness. The reaction between céliufosive fibres and Reactive range of dyes can be achieved by any of the following method
(1) ONE PHASE METHOD
(2) TWO PHASE METHOD
Printing Paste Recipe
| One Phase method | Two Phese method | |
|---|---|---|
| Dyestuf | 10-60 | 10-60 |
| Urea | 50-100 | 50-10 |
| Hat Wester | 300 | 300 |
| Thickner (Sodium Alginate 4%) | 350-400 | 350-400 |
| Resist salt | 10 | 10 |
| Sodium Bicarbonate | 15-30 | - |
| Adjust remaining Volume by addition of water | ||
| TOTAL | 1O0O PARTS | 1000 PARTS |
(1) ONE PHASE METHOD:
(2) TWO PHASE METHOD:
(i) Pad Silleate Batch Process Print (Dyestuff peste without alkali) --->Dry--->Silicate Pad (Sodium: Silicate 100-106°CTw j—-> 24 Hrs. Batch---> Wash
DISCHARGEPRINTING
VS. baged dyes are suitable for discharge printing. Cotton fabrics discharge is better than spun viscose fabrics. Prior to discharge printing the dyed fabric should be treated with resist salt 10gms/lit, to protect the dyed ground shade from reducing effect:
VS. baged dyes are suitable for discharge printing. Cotton fabrics discharge is better than spun viscose fabrics. Prior to discharge printing the dyed fabric should be treated with resist salt 10gms/lit, to protect the dyed ground shade from reducing effect:
DISCHARGE PRINTING PASTE RECIPE
| Thickner | 500 | Parts |
|---|---|---|
| Rangolite | 150-200 | '' |
| Titanium Dioxide | 100 | '' |
| Caustic Soda | 100-200 | '' |
| Water | X | '' |
| TOTAL | 1000 | Parts |
Dyed Pad---> Print(Discharge Printing Paste) —> Dry at (80-90° C) —->Steam for $10 min—>Wash
(The information given in the shade card is in good faith but without warranty)
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Borivali West, Mumbai, Maharashtra 
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