Dyeing of cotton with mordant dye(alizarin dye)



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.