The continuous dyeing of Cotton, Polyester & their blends is gaining importance over the traditional exhaust dyeing process owing to the major advantages in terms of uniformity of shades in long yardages, high productivity, simple/ short dyeing process, low utility cost in terms of consumption of dyes, chemicals, water, energy & low effluent generation.


Considering the recent changes in the Indian textile industry & the challenges faced from the global competition, the industry is


  • Moving towards Economies of Scale with latest technology
  • Stringent Product quality and Safety standards
  • Minimization of lead times of deliveries
  • Higher pressure on Price-Trend towards high economy
  • Modernisation, Automation & Re-structuring activities
  • Growing importance of Brands and Retailers
  • Fast changing consumer tastes
  • Increasing technical support requirements by the user industry


Depending on the type of substrate, selection of dyestuffs, availability of machines & the processors choice, various methods of dyeing are adopted. Effective co-ordination between a dyestuff manufacturer, textile processor, and machinery producer has led to ongoing improvements this continuous dyeing system


Usually for reactive dyes Cold-Pad-Batch (semi-continuous), Pad-Dry-Steam, Pad-Humidifix or Pad-Dry-Pad-Steam process is used, In case of Vat dyes Pad-Dry-Pad-Steam or Pad-Dry-Cure is preferred, whereas in case of Disperse dyes Pad-Dry-Thermosol process is followed.


SDC (Symptoms, Diagnosis & Curing) Concept in continuous dyeing


Considering the importance of this emerging trend of continuous dyeing & the general problems faced by the textile processor, we feel the SDC concept would be helpful. However, in order to overcome/ minimize the processing related problems it is essential to first understand the Symptoms (problems), Diagnose (ascertain the probable cause) & Cure (adopting remedial measure).


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Source: Technical Service, Atul Ltd (Colors Division), Atul - Valsad, Gujarat, India

 

To read about SDC Concept in Knit Processing; click here