Time: 2.5 Hours; Marks: 50

Unit–1: Introduction to Chemical Processing-Pretreatments

  • Textile Chemical processing for fibers.
  • Impurities present in the Natural and Synthetics Fibers.
  • Elementary knowledge of processing.
  • Different processes e.g., singeing, de-sizing, scouring, bleaching & mercerizing.

Unit–2: Textile Dyeing

  • Suitability of Dyes and dyeing methods, important classes of dyes for natural and man-made fibers e.g., direct, acid, basic, vat, azoic, sulfur and disperse dyes.
  • Important features of dyes.
  • Dyeing machines & special dyeing effects.

Unit–3: Textile Printing

  • Printing paste ingredients.
  • Introduction to various methods of printing, specific features and limitations of various methods, Such as Hand Block Printing, Hand Screen printing, Automatic Flat Bed Screen Printing, Rotary Screen Printing, Heat Transfer Printing.
  • Style of Printing (Direct Prints, Discharge Prints, Resist Prints, Pigment Prints, Blotch Prints, Flock Prints, Burnout Prints, Duplex Prints, Engineered Prints, Warp Prints) & their Specific feature for their Identification.

Unit–4: Textile Finishes

Classification of the finishes.

  • (i) According to Designer/Merchandiser /Sales Persons.
  • (ii) According to Textile Chemist.
  • (iii) According to Degree of Performance.

Objectives of the various finishes.

  • (i) Types of Calendaring and its objective.
  • (ii) Napping.
  • (iii) Emerizing.
  • (iv) Parchmentising.
  • (v) Shape Retention Finishes.
  • (vi) Shrinkage Control Finishes.
  • (vii) Sanforizing.
  • (viii) Decatizing.
  • (ix) Soil Release /Stain Repellent Finish.
  • (x) Water Repellent & Water Proofing.
  • (xi) Anti – Microbial Finish.
  • (xii) Flame Retarding Finish.
  • (xiii) Garment Washing.