Master IndigoRope Genius/C Machine Offers Eco-Friendly Indigo, Sulfur Dyeing
Master reports the new module offers the following ecological and economical advantages over traditional dye vats:
- fewer dyeing vats with improved indigo and sulfur dye penetration, higher diffusion and better fixation in the fiber;
- decreased dyebath volume;
- an approximately 50-percent reduction in hydrosulfite and soda consumption;
- decreased washing water consumption;
- increased dyeing output — up to 40 percent when using sulfur dyestuffs; and
- decreased sulfites and sulfates in the wastewater.
According to the company, the leuco dyeing environment results in total indigo chemical reduction, which may even eliminate the need for a fixing agent.
In summary, by using the Genius/C module Master has taken the repeated three steps common to traditional indigo dyeing methods — soaking the yarn with dyestuff, squeezing the yarn to eliminate excess dyebath and air leuco oxidation — and combined them into a step that involves the hot leuco diffusion and fixation with yarn immersion and yarn squeezing in an inert environment.
June 4, 2013