Textured Yarn Technology

By Prof. Kushal Sen   |   IIT Delhi
Learners enrolled: 281
This course would cover the fundamentals of twist texturing of fully drawn yarns. Theneed and the solutions that emerged because of material challenges and machinelimitations leading to the evolution of draw-texturing and friction texturing. Emergence ofAir - jet texturing, interlacement and bulked continuous yarns is also covered. Hi-bulkyarns principles and production of the same. Also covered would be the interestingpossibilities of using solvents and chemicals to produce textured yarns

INTENDED AUDIENCE : Students, teachers and persons working intextile industry, especially in man-made fibreindustry
PREREQUISITES : Should have knowledge of Fibres,manufacturing of manmade fibres
INDUSTRY SUPPORT : No industry in particular, however, themanmade fibre industry should value
Course Status : Completed
Course Type : Elective
Duration : 12 weeks
Category :
  • Textile Engineering
Credit Points : 3
Level : Undergraduate/Postgraduate
Start Date : 24 Jan 2022
End Date : 15 Apr 2022
Enrollment Ends : 07 Feb 2022
Exam Date : 24 Apr 2022 IST

Note: This exam date is subjected to change based on seat availability. You can check final exam date on your hall ticket.

Page Visits

Course layout

Week 1  :  Introduction , general classification of textured yarns
Week 2  :   False twist texturing, principles mechanism
Week 3  : False twist texturing process parameters
Week 4  :  Draw-texturing, need
Week 5  :  Draw –texturing process parameters
Week 6  :  Friction texturing principles
Week 7  :  Friction texturing NCV drives
Week 8  :  Air Jet Texturing
Week 9  :  Air jet Texturing process parameters
Week 10  :  Interlacement; need and principles , Bulked continuous filament ( BCF) yarns
Week 11  :  Hi-bulk yarns, principle and processes
Week 12  :  Solvent and chemical texturing

Books and references

  • Yarn Texturing Technology, D. K.Wilson, J. W. S. Hearle, and L. Hollick
  • False Twist Textured Yarns: Principles,Processes and Applications, C Atkinson  

Instructor bio

Prof. Kushal Sen

IIT Delhi
Currently a Professor in the Department of Textile Technology, IIT Delhi. Areas ofspecialization include textile chemical processing, texturing, and structure-propertycorrelation.

Course certificate

The course is free to enroll and learn from. But if you want a certificate, you have to register and write the proctored exam conducted by us in person at any of the designated exam centres.
The exam is optional for a fee of Rs 1000/- (Rupees one thousand only).
Date and Time of Exams: 24 April 2022 Morning session 9am to 12 noon; Afternoon Session 2pm to 5pm.
Registration url: Announcements will be made when the registration form is open for registrations.
The online registration form has to be filled and the certification exam fee needs to be paid. More details will be made available when the exam registration form is published. If there are any changes, it will be mentioned then.
Please check the form for more details on the cities where the exams will be held, the conditions you agree to when you fill the form etc.


Average assignment score = 25% of average of best 8 assignments out of the total 12 assignments given in the course.
Exam score = 75% of the proctored certification exam score out of 100

Final score = Average assignment score + Exam score

YOU WILL BE ELIGIBLE FOR A CERTIFICATE ONLY IF AVERAGE ASSIGNMENT SCORE >=10/25 AND EXAM SCORE >= 30/75. If one of the 2 criteria is not met, you will not get the certificate even if the Final score >= 40/100.

Certificate will have your name, photograph and the score in the final exam with the breakup.It will have the logos of NPTEL and IIT Madras .It will be e-verifiable at nptel.ac.in/noc.

Only the e-certificate will be made available. Hard copies will not be dispatched.

Once again, thanks for your interest in our online courses and certification. Happy learning.

- NPTEL team

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