|
3、Dyeing
Procedure
3.1 Exhaust dyeing methods
3.1.1 Exhaust dyeing
Wetting with water
→
Dyeing → Washing with cold
water → Oxidizing →
Washing with cold water →
Soaping → Washing with hot
water → Washing with cold
water → Hydro extracting
→ Drying
3.1.2 Jig dyeing
Wetting with water
→
Dyeing → Washing with cold
water→ Oxidizing →
Soaping → Washing with hot
water → Washing with cold
water → Hydro extracting
→ Drying
3.1.3 Dyeing recipes
ratio：
1:50
Table 1
|
Dyeing Condition |
Dyeing Method |
|
IN |
IW |
IK |
|
Amount of dyestuff
o.w.f.% |
0.1-1 |
1-3 |
3-6 |
0.1-1 |
1-3 |
3-6 |
0.1-1 |
1-3 |
3-6 |
|
Caustic soda30% (m/l) |
10-12 |
12-17 |
17-20 |
6-8 |
8-12 |
12-14 |
5-7 |
7-9 |
9-11 |
|
Hydrosulphite85%(g/L) |
4-5 |
5-7 |
7-8 |
3.5-4.5 |
4.5-6.5 |
6.5-7 |
3.5-4.5 |
4.5-6.5 |
6.5-7 |
|
Wetting agent10% (mL/L) |
5 |
5 |
5 |
5 |
5 |
5 |
5 |
5 |
5 |
|
Alcohol 95% (mL/L) |
5 |
5 |
5 |
5 |
5 |
5 |
5 |
5 |
5 |
|
Sodium sulfate anhydrous
(g/L) |
－ |
－ |
－ |
5-10 |
10-15 |
15-25 |
8-15 |
15-25 |
25-35 |
|
Reduction temp.（℃） |
60 |
50 |
50 |
|
Dyeing timp.（℃） |
60 |
50 |
25 |
Table 2
|
Dyeing Condition |
Dyeing Method |
|
IN spl. |
SRⅠ |
SRⅡ |
|
Amount of dyestuff
o.w.f.% |
0.1-1 |
1-3 |
3-6 |
0.1-1 |
1-3 |
3-6 |
0.1-1 |
1-3 |
3-6 |
|
Caustic soda30% (m/l) |
10-12 |
12-17 |
17-20 |
6-8 |
8-12 |
12-14 |
22-25 |
25-32 |
32-38 |
|
Hydrosulphite85%(g/L) |
4-5 |
5-7 |
7-8 |
3.5-4.5 |
4.5-6.5 |
6.5-7 |
3-5 |
5-8 |
6-12 |
|
Wetting agent10% (mL/L) |
5 |
5 |
5 |
5 |
5 |
5 |
5 |
5 |
5 |
|
Alcohol 95% (mL/L) |
5 |
5 |
5 |
5 |
5 |
5 |
5 |
5 |
5 |
|
Sodium sulfate anhydrous
(g/L) |
－ |
－ |
－ |
－－ |
－ |
－ |
－ |
－ |
－ |
|
Reduction temp.（℃） |
60 |
80 |
60 |
|
Dyeing timp.（℃） |
60 |
60 |
80 |
3.1.4 Stock vat method
|
Process |
SV-Ⅰ |
SV-Ⅱ |
SV-Ⅲ |
|
Amount of dyestuff (Kg) |
1 |
1 |
1 |
|
Soft water (L) |
50 |
50 |
100 |
|
Caustic soda 30% (mL/L) |
3 |
1.5 |
6 |
|
Hydrosulphite 85%(g/L) |
0.75 |
0.5 |
1.5 |
|
Reduction temp.
（℃） |
60 |
50 |
60 |
|
Reduction time (min) |
10-15 |
10-15 |
10-15 |
3.1.5 Oxidizing bath recipes
|
Method |
Hydrogen peroxide30％ |
Sodium perborate |
Potassium bichromate |
|
Amount |
2-3 mL/L |
3-4 g/l |
1-2 g/l |
|
Glacial acetic acid |
2-3 mL/L |
－ |
－ |
|
PH Value |
6-7 |
10-11 |
－ |
|
Temp.（℃） |
20-40 |
40-50 |
30-40 |
|
Time（min） |
10-20 |
10-20 |
10-20 |
3.1.6 Soaping bath recipes
|
Soap (g/L) |
3-5 |
Temp.℃） |
95-100 |
|
Sodium carbonate (g/L) |
2-3 g/L |
Time（min） |
10-12 |
3.2 Pad-steam process
Pigment padding
→
Drying → Cooling →
Chemical liquor padding →
Steaming → Washing with cold
water→ Oxidizing →
Washing → Soaping →
Washing → Drying
3.2.1 Pad-streaming recipe
|
Dyeing depth |
Caustic soda
g/l |
Hydrosulphite85%
(g/L) |
Common salt or Sodium
sulfate anhydrous g/l |
Steaming time (sec) |
Steam temp.(℃) |
|
Pale- Medium |
15-30 |
15-30 |
15-20 |
45-60 |
102-104 |
|
Medium- Deep |
30-50 |
30-50 |
20-30 |
|
