DYEING AND PRINTING (Theory)

Paper Code: 
25HCT223
Credits: 
3
Contact Hours: 
45.00
Max. Marks: 
100.00
Objective: 

This course will enable the students-

  1. To impart the knowledge about preparation of fabric for dyeing & printing.
  2. To study application of various dyes and properties related to it.
  3. To inculcate awareness of the different methods of printing and appreciate the technical advantages of each.
  4. To develop technical competency in printing with different dyes on different fabrics.

 

Course Outcomes: 

Course

Learning Outcomes                      (at course level)

Learning and Teaching Strategies

Assessment Strategies

Course Code

Course Title

25HCT223
Dyeing and Printing

(Theory)

COCT47: Describe the various methods of pre-treatments of fabric for dyeing and printing

COCT48: Classify the types of dyes, stages of dyeing and the process of dyeing of various fibers with different dyes

COCT49: Determine the colour and colour mixing/instruments for measurements of color

COCT50: Explain mechanism of various printing techniques with different dye medium

COCT51: Analyze the styles of printing and special printing procedure

COCT52:Contribute effectively in course-specific interaction

Approach in Teaching:

Discussion, Interactive Lectures, Power Point Presentation, Demonstrations

Learning Activities for the Students:

Self-Learning Assignments

Quiz, Power Point Presentations, Chart/Poster Presentation, Individual and Group Projects, Semester End Examination

 

 

9.00
Unit I: 
Dyeing and Preparation of Fabric
  • Pre-treatment’s of fabric for Dyeing and Printing – scouring, bleaching, singeing, desizing.    
  • Specific preparatory steps for cotton, wool, silk and man-made fibers.

 

9.00
Unit II: 
Dyeing Mechanism

·Dye, classification of dyes, Chemical constitution of dyes

  • Theory of Dyeing

  • Dyeing with synthetic dyes
    • Direct, vat, reactive sulphur, Azoic (for cellulosic)
    • Acid, basic (for proteins)
  • Stages of dyeing – fiber dyeing, yarn dyeing, fabric dyeing, garment dyeing, their advantages and disadvantages
  • Union dyeing and cross dyeing

 

9.00
Unit III: 
Printing
  • Introduction to Printing, difference between dyeing and printing.
  • Historical development of printing methods – block, screen, stencil, roller and rotary.
  • Preparation of printing paste – Thickening agents and their suitability for various classes of dyes and fibers.

 

9.00
Unit IV: 
Printing Procedure
  • Styles of Printing – Direct, resist, discharge.
  • Special Printing Procedures – Transfer Printing, Flock Printing, Foam Printing, Damask Printing.

 

9.00
Unit V: 
Innovations & Trends in Dyeing & Printing
  • Common issues: patchiness, uneven dyeing, poor fastness,
  • Causes and solutions
  • Eco-friendly dyes and processes
  • Waterless dyeing, low-impact dyes, natural dyes in design
  • Smart textiles, reactive digital printing
  • Use of AI and digital tools in print development

 

Essential Readings: 
  1. Prayag, R.S. (1989), Technology of Textile Printing, Dharwad Karnataka Shree J Printers.
  2. Shenai, V.A. (1987), Chemistry of Dyes and Principles of Dyeing, Sevak Prakashan, Mumbai.
  3. Shenai, V.A. (1996), Technology of Printing, Technology of Textile Processing, Vol. IV, Sevak Publications. Bombay
  4. Gohl & Vilensky (1980), Textile science, 2nd ed., CBS Publications, New Delhi.

 

References: 

SUGGESTED READINGS:

  1. Jain Hemlatha (2010), Techniques of dyeing and printing, Anne books Pvt. Ltd, New Delhi.
  2. Sekhri Seema (2011), Text Book of Fabric Science fundamentals to Finishing, PHI Learning Pvt, Ltd, New Delhi.
  3. Chaudhary, A. K. Roy (2006), Textile Processing and dyeing, Science pulications, New Delhi.
  4. Miles L.W.C. (1994), Textile Printing, 2nd edition, England, Society of Dyers and Colourists
  5. Aspland, J. R. (2002). Textile dyeing and coloration. American Association of Textile Chemists and Colorists (AATCC).
  6. Broadbent, A. D. (2001). Basic principles of textile coloration. Society of Dyers and Colourists.

E-Resources:

  1. https://www.youtube.com/watch?v=oofh4pKfXl0
  2. https://www.youtube.com/watch?v=oofh4pKfXl0&list=RDCMUC640y4UvDAlya_WOj5U4pfA&start_radio=1&rv=oofh4pKfXl0&t=15

Reference Journals:

  1. https://irispublishers.com/jtsft/
  2. Colourage (https://colourpublications.in/pages/publications/)
  3. Dyes and Pigments (https://www.journals.elsevier.com/dyes-and-pigments/)

 

 

 

 

 

Academic Year: 
2025-2026
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