The dyeing procedure of cotton with mordant dye(alizarin
dye) is describe below:
i.
At first cotton fabric is boiled in the solution
of
Ø
1 part TR Oil &
Ø
10 part water for 12 hours.
ii.
Then the fabric is dried at 40-60°C
iii.
Treated again with al-acetate at 60°C for 2 hours.
iv.
Then dry at 40-60°C.
v.
Again treated with 2 parts Na-phosphate and 10
parts water at 40-40°C
for 40 min.
vi.
1-1.5% dye ( on the weight of fabric) is added
in the solution with ca-acetate at room temperature for 30 minutes.
vii.
Then fabric is hot rinsed (at 70°C) for 30 minutes.
viii.
Finally the fabric is washed with soap solution
and water and then dried.