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DYEING PROCEDURE

 

Procedure Of Dyeing (Exhaust Dyeing)

 

Jigger Dyeing

Circulating

M/C

Winch Dyeing

Jigger Dyeing

Circulat-
Ing M/C

Winch Dyeing

Material:Liquor Ratio
Glauber's Salt

1:2-1:3

1:4-1:6

1:8-1:12

1:15-1:30

1:2-1:3

1:4-1:6

1:8-1:12

1:15-1:30

Calcined G/L
or
Common Salt
Coustic Soda 72oTw
ML/L

50-80


4-6

50-80


3-4

50-80


2-3

50-80


1-2

50-80


3-5

50-80


2-3

50-80


1-2

50-80


1

Soda Ash G/L
or
Trisodium Phosphate
G/L

5


-

5


30

5


15-20

5


10-15

5


30

5


20-25

5


10-15

5


5-10

Dyeing Temp. oC

Time Minutes

-


-

-


-

40oC


60-90

-


-

-


-

-


-

60oC


60

-


-


In case of VS Turquoise Blue G, Soda Ash is used as an alkali and dyeing is carried out at 80oC common salt should not be used.

Material:Liquor Ratio

1:2-1:3

1:4-1:6

1:8-1:12

1:15-1:30

Glauber's Salt Calcinated G/l
Soda Ash G/L

80

25

80

15-20

80

10-15

80

5-10

Temperature oC

-

80

-

-


Padding Method

Any conventional padding equipment could be used for dyeing with this method. It is preferable to have the size of the troughs as small as possible.

One bath pad batch using Sodium Silicate Sodium silicate and caustic soda required are as follows:

Sodium Silicate

Caustic Soda 32% m1/1

oBe

Weight ratio
Na2O:SiO2oBe

Gms/l

Upto 25 gms/l
Dye Solution

Above 25 gms/l
Dye Solution

37-40
40-42
48-50
58-60

1:3.3
1:3.3
1:2.6
1:2.1

135
120
100
85

13
11
5
-

18
16
10
4

Padding:

The well-prepared fabric is padded at 60-70% expression for cotton and 80-90% expression for staple viscose fabric at 20-25oC. The lower temperature is preferred for dye liquor stability.

Fixation:

On completion of Padding the batch is covered with polythene film to avoid localized evaporation of water and kept as such for 24 hours.

Contd.  on Page  2

 

The information and procedure provided here is in good
faith and to the best of our knowledge, but without liabilities.


© Magnum Corporation, Bhavnagar, Gujarat - INDIA
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