Textile Dyeing detailed Syllabus for Garment Technology (DGT), C18 curriculum has been taken from the TSSBTET official website and presented for the diploma students. For Course Code, Course Name, Lectures, Tutorial, Practical/Drawing, Internal Marks, Max Marks, Total Marks, Min Marks and other information, do visit full semester subjects post given below.
For all other Diploma in Garment Technology (DGT) Syllabus for 3rd Sem C18 Curriculum TSSBTET, do visit Diploma in Garment Technology (DGT) Syllabus for 3rd Sem C18 Curriculum TSSBTET Subjects. The detailed Syllabus for textile dyeing is as follows.
Prerequisites:
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Course Outcome:
- Explain the different singeing and desizing process.
- Explain the scouring process.
- Explain the bleaching process.
- Analyze the procedures involved in application and after treatment for direct dyes
- Choose the correct reactive dyeing procedures and the methods of stripping reactive dye based on the classification properties
- Analyses the mechanism involved in dyeing with azoic dyes
Unit 1: Singeing and Desizing:
Hot plate singeing- -roller singeing machine – gas singeing machine – advantages and disadvantages of different singeing methods -. precautions for gas singeing machines – problems associated with direct singeing method – indirect singeing method – advantages of indirect singeing method- fabrics normally singed – gassing and gassed yarn – yarns typically singed- pre cleaning process. cropping and shearing. sizing. term desizing. object of desizing. hydrolytic methods of desizing (1rot steep 2 enzymatic 3 acid steep). desizing enzymes – continuous desizing using a winch. continuous desizing using j box advantages and disadvantages of enzyme desizing. term solvent desizing. low temperature desizing. List of oxidative desizing methods.
Unit 2: Scouring:
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Unit 3: Bleaching:
sodium hypochlorite bleach precautions – bleaching powder to cotton – advantages and disadvantages of sodium hypochlorite – factors affecting hypochlorite bleaching operations 1 effect of PH, Effect of temperature, Effect of concentration, Effect of electrolyte – accelerated hypochlorite bleaching -drawbacks of accelerated bleaching – accelerated bleaching in the danger zone.- parameters in peroxide bleaching – bleaching of wool in alkaline hydrogen peroxide solution – acidic hydrogen peroxide solution – bleaching of silk with hydrogen peroxide – advantages and disadvantages of peroxide bleach over hypochlorite bleaching.- advantages of j box pretreatment – four unit operations involved in j box peroxide bleaching process. Define the terms: terms 1 affinity of dyes to fibres 2 substantivity 3 exhaustion 4 material to liquor ratio.
Unit 4: Direct Dyes:
properties of direct dyes – classification of direct dyes. mechanism – stages involved in dyeing with direct dyes
- preparation of dye bath
- dyeing – reasons for after treatment – different after treatments -stripping of direct dyes – mass colouration of synthetic fibres – advantages and disadvantages of mass colouration of synthetic fibres -six techniques/methods used to produce mass coloured textile synthetic fibres.
Unit 5: Reactive Dyes:
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Unit 6: Azoic Dyes:
pore dye diffusion model and free volume model – principle/concept of azoic dyes – advantages and disadvantages of naphthol dyeing. Preparation of naphthols by hot dissolving method and Cold dissolving method – impregnation of the material with naphthol both Exhaust method and Tub dip method) – removal of excess naphthol solution – development in a solution of the selected fast base -substantivity of naphthols.- factors influencing substantivity – soaping – striping azoic dyes -application of nylon with azoic dyes – dyeing of polyester with azoic dyes – role of chemicals – Define the following terms :1 material to liquor ratio (M:L),2 Percent shade,3 Per cent Exhaustion, 4 developer, 5 stripping,6 dye site 7 naphthol and 8 leveling agent. 9 Anti diazotate 10 Batch wise processing 11 Random dyeing.12 Tub liquoring 13 Ingrain dye 14 coupling component
Reference Books:
- R S Prayag Bleaching and Mercerising and Dyeing of Cotton ,Materials .
- DR C V Koushik Antao Irwin Josico – Chemical Processing of Textiles – NCUTE
- S R Karmakar – Chemical Technology in the pretreatment processes of Textiles.
- S R Karmakar – Chemical Technology in the colouration of Textiles – vol 1 colour Publications Mumbai
- R S Prayag – Technology of Textile Printing
- Francis J Kafka – Batik, Tie dyeing, Stenciling, Silkscreen, Block Printing – Dover Publications -NewYork
- Marypaul Yatea- Textiles A Handbook for Designers – W W Norton – NewYork.
Course Outcome:
For the complete Syllabus, results, class timetable, and many other features kindly download the iStudy App
It is a lightweight, easy to use, no images, and no pdfs platform to make students’s lives easier..
Suggested E-Learning references
- .http://textile4u.com/
- www.nptel.ac.in
For detail Syllabus of all other subjects of Garment Technology, C18 curriculum do visit Diploma In Garment Technology 3rd Sem Syllabus for C18 curriculum.
For all Garment Technology results, visit TSSBTET DGT all semester results direct links.