FABRIC COLOURATION (THEORY)

Paper Code: 
CFSD 501
Credits: 
3
Contact Hours: 
45.00
Max. Marks: 
100.00
Objective: 

This course will enable the students to -

  1. Develop foundation towards application of dyes on different fabrics
  2. Provide comprehensive knowledge about concept of various dyeing & printing methods

Course Outcomes (COs):

Course

Learning outcomes

(at course level)

Learning and teaching strategies

Assessment

Strategies

Paper Code

Paper Title

CFSD 501

 

Fabric Colouration

(Theory)

 

The Students will be able to:

 CO.196  Apply the various techniques of fabric preparatory process.

CO.197  Describe the process of dyeing of various fibers to fabric with different dyes

CO.198 Explain the printing techniques and printing styles.

CO.199  Illustrate the after treatment and auxiliaries

CO.200 Interpret the introduction to various finishes and special surface enhancement.

 

 

 

 

 

 

 

Approach in teaching:

Interactive Lectures, Discussion, Power Point Presentations, Informative videos

 

Learning activities for the students:

Self-learning assignments, Effective questions, presentations, Field trips

Assessment tasks will include Class Test on the topics, Semester end examinations, /Quiz, Student presentations, and assignments

 

 

 

9.00
Unit I: 
Preparatory Processes
  • Importance and application of different preparatory processes         9hrs
    • Desizing
    • Scouring
    • Bleaching
    • Boiling
    • Singeing
    • Mercerization
9.00
Unit II: 
Dyeing
  • Terminology and theory of dyeing                                                        9 hrs
  • Classification of dyes
  • Principles of dyeing
  • Mode of application of direct, acid, basic, azoic, reactive, sulphur, vat, mordant and disperse dyes
  • Methods of dyeing & effects achieved on various textile material Fibre, Yarn, and  Fabric
  • Achieving different shade effects on fabrics through cross dyeing, union dyeing
  • Methods  of colour fastness

 

9.00
Unit III: 
Printing
  • Styles of printing – direct, discharge, resist, dyed                                 9 hrs
  • Methods of printing
    • Block printing
    • Roller printing
    • Stencil, screen (flat and rotary) printing
    • Transfer printing
    • Innovative printing methods: Digital printing , Polychromatic printing, Photo Printing, Jet Spray Printing

 

9.00
Unit IV: 
After Treatment & Auxiliaries
  • Fixation of prints: Ageing, Steaming, Baking, Wet development            9 hrs
  • Washing of printed goods
  • Auxiliaries
  • Wetting agents, dispersing agents and solvents
  • Hygroscopic agents
  • Anti foaming agents
  • Oxidizing and reducing agents
  • Carriers or Swelling agents
  • Retarding or Levelling agents
  • Chelating or Sequestering agents
  • Dye fixing agents
    • Binders and thickeners
  • Fabric defects in Dyeing and printing
9.00
Unit V: 
Finishing
  • Classification of finishes                                                                9 hrs
  • Preparatory finishes
  • Finishes affecting appearance and texture: Calendering,  Napping, Shearing, Softening, Stiffening, Parchmentization, Raising, Mercerization
  • Finishes for enhancing special characteristics: Flame proofing, Soil Release, Water proof and water repellent, Crease Resistance, Softening,  Sanforising, Optical whitening

 

Essential Readings: 
  • Prayag, R.S. (1989), Technology of Textile Printing, Dharwad Karnataka Shree J Printers.
  • Shenai, V.A. (1987), Chemistry of Dyes and Principles of Dyeing, Sevak Prakashan, Mumbai,.
  • Shenai, V.A. (1996), Technology of Printing, Technology of Textile Processing, Vol. IV, Sevak Publications. Bombay
  • Gohl & Vilensky (1980), Textile science, 2nd ed., CBS Publications, New Delhi.
  • Jain Hemlatha (2010), Techniques of dyeing and printing, Anne books Pvt. Ltd, New Delhi.
  • Sekhri Seema (2011), Text  Book of Fabric Science fundamentals to Finishing, PHI Learning Pvt, Ltd, New Delhi.
  • Chaudhary, A. K. Roy (2006), Textile Processing and dyeing, Scienec pulications, New Delhi.
  • Miles L.W.C.(1994), Textile Printing, 2nd edition, England, Society of Dyers and Colourists

 

Academic Year: 
2021-22
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