Rubia cardifolia commonly known as India Madder is an evergreen plant native to Himalayas. It is an economical and important source of red 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. Madder is one of the most valuable herb used in Ayurveda. It is known as artificial colouring agent. Ayurveda its medicinal uses are also emphasised. Madder is the best known for blood purification and helpful in various skin diseses.
(A) Wet the fabric with wetting agent/soapnut(Reetha) or normal wash with water at 50 degree for 20 mins.
(B) Pre Mordant :- Pre-treat the material with alum 12% of fabric weight at 85°C for 60 mins.
(C) Dyeing :- Add the required amount of dye to the dye bath. PH of dye bath needs to be maintained at pH 7. If it is higher than pH, 7 add vinegar, if below pH 7, use lime or soda ash. Stir well to dissolve the dye. Add fabric to the dye bath and maintain at 95°C for 60-80 mins. We check all our natural dyes at 5% of fabric weight; you can amend the percentage as per lighter or darker shade required.
(D) Post Treatment : - Conduct soaping of the dyed material with non-ionic detergent (0.5gpl) or ezee soap at 50°C for 35 mins.
(E) Then conduct cold wash of the material at 50°C for 20 mins or more time.
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