|
Pad-dyeing,
By
using padding mangle and suitable drying and steaming equipments as
required.
Pad - Dry - Bake -
Wash
|
Padding Liquor |
Dye |
X parts
|
|
|
Urea |
200 parts |
|
|
Sod. Alginate Paste |
2 parts |
|
|
Soda Ash |
10-20 parts |
|
|
Water |
remaining |
|
|
Total |
1000 parts |
Fabric is padded in cold liquor and dried in hot air steam or in
drying cylinders. Then after dried fabric is baked for 30 seconds to 5
minutes at 200-160oC for fixation. The drying before
thermofixation should be slow and even to avoid migration and
leveling.
Pad - Dry - Steam -
Wash
|
Padding Liquor |
Dye |
X
parts |
|
|
Urea |
Min. amt. if required |
|
|
Resist salt |
10 parts |
|
|
Soda Ash |
10 parts |
|
|
Sod. Bicarbonate |
10 parts |
|
|
Sod. Alginate Paste |
2 parts |
|
|
Water |
remaining |
|
|
Total |
1000 parts |
Fabric is padded in cold liquor and dried in hot air steam or in
drying cylinders. Then after dried fabric is baked for 3 to 10 minutes
at 100-150oC and washed-off.
Pad - Dry - Chemical pad - Dry - Steam -
Wash
Dyes are dissolved with a least amount of urea and 10 parts of resist
salt per 1000 parts and liquor. Then fabric is padded with cold, dried
and passed through caustic soda in brine solution then steamed for
60-75 seconds at 100-105oC and washed off.
Contd. .. on Page 3
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