Rubia Cordifolia commonly known as India Madder. is an evergreen plant native to himalayas. It is an economical and important source ofred dye producing plant for the textile industry. The roots of Madder produce a variety of red colour includes orange reds, brick red, blood red and fiery reds. The color depends on the climatic condition of the environment where the plant grows and soil where the roots grew, their age, the mineral content of the water used for dyeing, the temperature set up of the process, on the dye pot used, and also on how much madder used relative to the fiber. Madder can be used on cotton, leather, wool and silk.
(A) Pre Mordant 1 :- Pre-treat the material with alum 10% of fabric weight at 80°C for 60 mins.
(B) Dyeing :- Add the required amount of dye to the dye bath. pH of dye bath needs to be maintained at pH 5. If it's higher than pH 5 add vinegar, if below pH 5, use lime or soda ash. Stir well to dissolve the dye. Add fabric to the dye bath and maintain at 90°C for 60-80 mins. We check all our natural dyes at 30% of fabric weight, you can amend the percentage as per lighter or darker shade required.
(C) Post Treatment :- Conduct soaping of the dyed material with non-ionic detergent (0.5gpl) at 50°C for 35 mins.
(D) Hot wash and then cold wash the material.
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