Dyeing and Printing

Paper Code: 
HCT 144 B
Credits: 
4
Contact Hours: 
60.00
Max. Marks: 
100.00
Objective: 
  • To study the use of various dyes and auxiliaries
  • To understand the concept of dyeing & printing of various substrates with different classes of dyes.

 

12.00
Unit I: 
Unit I
  • Advances in chemistry of dye intermediates and unit organic processes applied for their application. Colour and chemical constitution
  • Chemistry of various synthetic dyes for application on textile fibers, novel chromophores and reactive groups, newer application techniques, Developments in dye chemistry
  • Photochemistry of dyes, Solvent dyes, optical brightening agents and pigments. Azo ban, the forbidden amines, anomalies and testing.
  • Natural dyes- concept and practice, classification, technology for production and application of natural dyes on textiles

 

 

12.00
Unit II: 
Unit II
  • Thermodynamics of dyeing and Kinetics of dyeing
  • Influence of fiber structure on dyeing, effect of processes on fiber properties before dyeing and during dyeing, Solubility parameter, cohesive energy density and interaction between dyes and polymers
  • Application of dyes on various substrates- natural, synthetic and blends
  • Advances in preparatory processes, time and energy saving techniques, Combine preparatory processes, Processing of textured man-made fibers
  • Rapid dyeing techniques, Foam dyeing, dyeing using supercritical carbon dioxide and other advanced dyeing techniques.
  • Developments in dyeing machineries and dyeing defects

 

 

12.00
Unit III: 
Unit III
  • Printing- Methods (block, roller, screen -flat bed, rotary, transfer, digital, flock, laser) & styles of printing
  • Printing with
  • Printing with natural dyes using block, roller, screen (flat bed and rotary screen), transfer, digital and flock
  • Finishing and After treatment of printing
  • Developments in transfer printing of natural as well as synthetic dyes, Digital printing – Inkjet printing and Xerography, Concept of continuous processing.
  • Developments in printing machineries and printing defects

 

12.00
Unit IV: 
Unit IV
  • Dyeing and printing auxiliaries- Wetting agents, electrolytes, solvents, dispersing agents, oxidizing agents, reducing agents, cationic fixing agents, sequestering agents, retarding agents, carriers, hygroscopic agents, stabilizers and discharging agents
  • Thickening agents – natural, modified and synthetic
  • Importance of textile testing, Standard conditions of testing, standardization and quality control
  • Fabric Testing- Strength properties – tensile, bursting, tear and dimensional stability
  • Performance properties – resistance to abrasion, pilling, wrinkling and burning
  • Colorfastness – light, washing, dry cleaning, perspiration, saliva & ironing
  • Quality parameters for fabrics suitable for various end uses - apparel, household and industrial textiles

 

12.00
Unit V: 
Unit V
  • Wastes from textile and apparel industry: Environmental impact of dyeing, printing & finishes, Indian & International environmental legislations
  • Harmful dyes and chemicals, Toxicology of synthetic colorants and chemicals
  • Environmental impact of dyeing & printing.
  • Health and safety requirements
  • Introduction to Effluent Treatments of Textile and Apparel industry
  • Effluent Treatment plants used in wet processing.

 

Essential Readings: 
  • Shenai VA. 1994. Technology of Dyeing. Sevak Publ.
  • Shenai VA. 1985. Technology of Printing, Technology of Textile
  • Vilensky G. 1987. Textile Science. CBS.
  • Pradeep V Mehta. 1998. Managing Quality in Apparel Industry. New Age International.
  • Ruth Glock. 1990. Apparel Manufacturing. Macmillan Publ.
  • Booth, J.E., Principles of Textile Testing, Newness Butter Worth, London

 

References: 
  • Hall AJ. 1955. Handbook of Textile Dyeing & Printing. The National Trade Press.
  • Joyce Story. 1974. The Thames & Hudson Manual of Textile Printing.
  • Thames & Hudson. Processing. Vol. IV. Sevak Publ.
  • Sule AD. 1997. Computer Colour Analysis Textile Application. New Age International.
  • Vidyasagar PV. 1998. A Handbook of Textiles. Mittal Publ.
  • Bernard P Corbman. 1983. Textiles - Fiber to Fabric. McGraw-Hill.
  • Nisbel H. 1978. Grammer of Textile Design. D.B. Taraporevale Sons.
  • Prayag RS. 1988. Textile Finishing. Sri T Printers.

 

Academic Year: 
2023-2024
  • Printer-friendly version
  • PDF version