The continuous dyeing of Cotton, Polyester &their blends is gaining importance over the traditional exhaust dyeing processowing to the major advantages in terms of uniformity of shades in longyardages, high productivity, simple/ short dyeing process, low utility cost interms of consumption of dyes, chemicals, water, energy & low effluentgeneration.
Considering the recent changes in the Indiantextile industry & the challenges faced from the global competition, theindustry 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 ofdyestuffs, availability of machines & the processors choice, variousmethods of dyeing are adopted. Effective co-ordination between a dyestuffmanufacturer, textile processor, and machinery producer has led to ongoingimprovements 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 ofVat dyes Pad-Dry-Pad-Steam or Pad-Dry-Cure is preferred, whereas in case ofDisperse dyes Pad-Dry-Thermosol process is followed.
SDC (Symptoms, Diagnosis & Curing)Concept in continuous dyeing
Considering the importance of this emergingtrend of continuous dyeing & the general problems faced by the textileprocessor, we feel the SDC concept would be helpful. However, in order toovercome/ minimize the processing related problems it is essential to firstunderstand the Symptoms (problems), Diagnose (ascertain the probable cause)& Cure (adopting remedial measure).
Source: Technical Service, Atul Ltd (ColorsDivision), Atul - Valsad, Gujarat, India
To read about SDC Concept in Knit Processing; click here
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