Dyeing of Synthetic Fibres detailed Syllabus for Textile Technology (TC), I – scheme has been taken from the MSBTE official website and presented for the diploma students. For Subject Code, Subject Name, Lectures, Tutorial, Practical/Drawing, Credits, Theory (Max & Min) Marks, Practical (Max & Min) Marks, Total Marks, and other information, do visit full semester subjects post given below.
For all other Diploma in Textile Technology (TC) Syllabus for 5th Sem I – Scheme MSBTE, do visit Diploma in Textile Technology (TC) Syllabus for 5th Sem I – Scheme MSBTE Subjects. The detailed Syllabus for dyeing of synthetic fibres is as follows.
Rationale:
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Competency:
The aim of this course is to help the student to attain the following industry identified ‘ cotnpefency through various teaching learning experiences:
- Use relevant dyes, chemicals and dyeing equipment for synthetic fibres and fabrics.
Course Outcomes:
The theory, practical experiences and relevant soft skills associated with this course are to be taught and implemented, so that the student demonstrates the following industry oriented COs associated with the above mentioned competency:
- Select relevant pretreatment process and dyeing machine for dyeing of synthetic fibres and their blends.
- Use relevant dyeing method for polyester substrate with disperse and cationic dyes.
- Use relevant dyes to dye nylon substrate.
- Use relevant dyes to dye acrylic substrate.
- Use relevant method to dye blended fabrics with relevant dyes.
Suggested Exercises:
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Instruments Required:
The major equipment with broad specification mentioned here will usher in uniformity in conduct of experiments, as well as aid to procure equipment by authorities concerned.
Equipment Name with Broad Specifications
- Water bath 10 liter capacity with 500 ml dye pots
- High temperature high pressure beaker dyeing machine with microprocessor and dye-pot of 250ml capacity
- Open bath beaker dyeing machine with micro-processor and dye-pot of 500 ml capacity
- Volumetric flask, measuring cylinder, pipette, weighing balance, beakers, thermometer.
- Two bowl padding mangle
- Relative dyes, chemicals and auxiliaries
- Drying, Curing and Setting Chamber (Stenter), Working width: 450mm Max. Temperature -200C
- Electronic balance with 0 001 gm accuracy, capacity 300 gm.
- Laboratory steamer, Maximum temperature: 130 UC, Maximum working pressure: 4 kg/sq cm, Electrical load: 4 Kw
Unit 1
Effect of pretreatments and Dyeing machinery
Total Teaching Hours – 08
Distribution of Theory Marks
R Level – 04
U Level – 04
A Level – 06
Total Marks – 14
Unit Outcomes (UOs) (in cognitive domain)
- Describe with sketches the procedure to use disperse dye to analyse the dyeability of the given fabric sample.
- Explain the effects of scouring on dyeing quality of the given fabric with justification.
- Explain the effects of bleaching on dyeing quality of the given fabric with justification.
- Explain the effects of mercerization on dyeing quality of the given blend with justification.
- Explain with sketches the construction and working of the given dyeing machine.
Topics and Sub-topics
- Pretreatment: Concept, heat set and un-heat set polyester, dyeability, disperse dye
- Effect of heat: Setting on polyester and nylon,
- Effect of scouring: on polyester, nylon, acrylic, and blend.
- Effect of bleaching: on polyester, nylon, acrylic, and blend.
- Effect of mercerization: on blends.
- Dyeing machines: Package dyeing, H.T. H.P. beam dyeing, Jet dyeing, soft-flow dyeing, continuous dyeing ranges (CDR) machines.
Unit 2
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Unit 3
Dyeing of nylon
Total Teaching Hours – 06
Distribution of Theory Marks
R Level – 02
U Level – 04
A Level – 04
Total Marks – 10
Unit Outcomes (UOs) (in cognitive domain)
- Describe with flowchart the procedure to use acid and metal complex dyes to dye the given nylon substrate.
- Describe the application of acid dye with parameters affecting the dyeing quality of the given fabric with justification.
- Describe with sketches the relevant dyeing mechanism of acid dyes on the given fabric.
- Describe with flowchart the relevant basic dyeing method with time-temperature profile of the given fabric.
- Suggest the rectification for the stated dyeing defects in the given dyed fabric with relevant solutions.
Topics and Sub-topics
- Dyeing of nylon: concept, dyeing methods, advantages, and limitations, parameters affecting the dyeing quality, time-temperature profile of the nylon fabric.
- Acid Dyes: Classification, dyeing mechanism, procedure, types of leveling agents, fastness properties
- Basic dyes: Classification, mechanism, procedure, fastness properties
- Metal complex dyes: Classification, mechanism, procedure, fastness properties
- Defects in dyeing of nylon and their remedies.
Unit 4
Dyeing of acrylic
Total Teaching Hours – 06
Distribution of Theory Marks
R Level – 02
U Level – 04
A Level – 04
Total Marks – 10
Unit Outcomes (UOs) (in cognitive domain)
- Describe with flowchart the procedure to use cationic and disperse dyes to dye the given acrylic substrate.
- Describe the application of cationic dye with parameters affecting the dyeing quality of the given fabric with justification.
- Explain the use of fibre saturation factor and dye saturation value in dyeing of the given fabric with justification.
- Select relevant comonomers for better dyeability of the given fabric with justification.
- Suggest the rectification for the stated dyeing defects in the given dyed fabric with relevant solutions.
Topics and Sub-topics
- Dyeing of acrylic: Concept, dyeing methods- with and without retarder, defitherm method, use of cationic and disperse dyes, parameters affecting the dyeing quality
- Retarders: Types, Fibre saturation factor, dye saturation value
- Fibre comonomers: Types, effect on dyeability of acrylic fabric.
- Defects in dyeing of acrylic and their remedies.
Unit 5
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Suggested Student Activities:
Other than the classroom and laboratory learning, following are the suggested student-related co-curricular activities which can be undertaken to accelerate the attainment of the various outcomes in this course: Students should conduct following activities in group and prepare reports of about 5 pages for each activity, also collect/record physical evidences for their (students) portfolio which will be useful for their placement interviews:
- Visit any synthetic process house nearby and collect information from the processing in-charge about various processes conducted.
- Write report on visit to dye house and compare the existing process conditions.
- Collect information on safety precautions of various chemicals and machinery used in the process house.
- Collect information using various sources to prepare chart of dyes, chemicals, and machines available in the market.
- Library /Internet survey of developments in synthetic fibre dyeing.
- Prepare presentation incorporating visuals, photographs, animations, video on process sequence of synthetic fabric production.
- Collect information from the synthetic process house about the faults in dyeing and relevant remedies.
- Collect information from the synthetic process house about the good work practices adopted in synthetic fabric dyeing.
Suggested Special Instructional Strategies:
These are sample strategies, which the teacher can use to accelerate the attainment of the various outcomes in this course:
- Massive open online courses (MOOCs) may be used to teach various topics/sub topics.
- in item No. 4 does not mean only the traditional lecture method, but different types of leaching methods and media that are to be employed to develop the outcomes.
- About 15-20% of the topics/sub-topics which is relatively simpler or descriptive in nature is to be given to the students for self-directed learning and assess the development of the COs through classroom presentations (see implementation guideline for details).
- With respect to item No. 10, teachers need to ensure to create opportunities and provisions for co-curricular activities.
- Guide students in undertaking micro-projects.
- Demonstrate students thoroughly before they start doing the practice.
- Encourage students to refer different websites to have deeper understanding of the subject.
- Observe continuously and monitor the performance of students in Lab
Suggested Micro-Projects
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Suggested Learning Resources:
- Chemical Processing of Textiles: Preparatory processes and dyeing Koushik, C. V.; Josico, A. I. NCUTE, 8th Floor, Main Building, IIT, New Delhi, 2003
- Textile processing and properties Vigo, T. L. Elsevier Science B.V. Amsterdam 1994, ISBN: 9780444882240
- The dyeing of cellulosic fibres Clifford Preston Society of Dyers and Colourists. England, 1986, ISBN: 9780901956439
- Dyeing and Chemical Technology of Textile Fibres Trotman, E. R. John Wiley and Sons Inc.. New Delhi, 1985, ISBN: 9780471809104
- Technology of Dyeing Shenai, V. A. Sevak Publications Mumbai, 1984
- Handbook of Textile and Industrial Dyeing Clarke, M. Woodhead Publishing, UK, 2011 ISBN: 9781845696962
- Dyeing of Polyester and Its Blends Gulrajani, M. L. Textile Department, IIT, Delhi 1987
- Chemical Processing of Synthetic Fibres and Blends Datye, K. V.; Vaidya, A. A. John Wiley and Sons Inc., New York, 1984, ISBN: 9780471876540
Software/Learning Websites:
- www.study.com/academy/lesson/what-is-dyeing-in-textiles.html
- www.fibre2fashion.com/industry-article/3 87 l/dyeing?page=l
- www.dyes-pigments.standardcon.com/batch-dyeing-process.html
- www.dyes-pigments.standardcon.com/continuous-dyeing-process.htmlwww.en.wikipedia.org/wiki/Dyeing
- www.teonline.com/knowledge-centre/dyeing- fiber-to-apparel.html
- www.teonline.com/knowledge-centre/dyeing.html
- www.textilelearner.blogspot.in/2011/12/methods-of-dyeing-different-dyeing.html
- www.dyes-pigments.standardcon.com/semi-continuous-process.html
- www.dyes-pigments.standardcon.com/pigment-dyeing.html
For detail Syllabus of all other subjects of Textile Technology, I – scheme do visit Textile Technology 5th Sem Syllabus for I – scheme.
For all Textile Technology results, visit MSBTE Textile Technology all semester results direct links.