Theory of Drafting and Twisting detailed syllabus for Handloom & Textile Technology (HT) for 2021 regulation curriculum has been taken from the Anna Universities official website and presented for the HT students. For course code, course name, number of credits for a course and other scheme related information, do visit full semester subjects post given below.
For Handloom & Textile Technology 5th Sem scheme and its subjects, do visit HT 5th Sem 2021 regulation scheme. For Professional Elective-I scheme and its subjects refer to HT Professional Elective-I syllabus scheme. The detailed syllabus of theory of drafting and twisting is as follows.
Course Objectives:
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Unit I
IDEAL DRAFTING 9
Ideal drafting – definition, model, conditions required in roller drafting system; deviations from ideal drafting and actual drafting conditions; drafting wave – definition, causes, estimation, conditions to avoid formation, role of apron in controlling drafting wave formation, limitations of apron system
Unit II
ROLLER SLIP AND ROLLER NIP MOVEMENT 9
Roller slip – definition, conditions for the formation of forward and backward slips in the roller drafting systems, measures to avoid roller slip occurrence; causes for roller nip movement and roller speed variation, control measures
Unit III
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Unit IV
FALSE TWISTING, TWISTING IN RING FRAME J 9
Principle of false twisting; fundamental requirements to create real twist in the strand; principle of twist insertion in ring spinning; limitations of ring twisting; mechanics of balloon formed during twisting; principle of two-for-one twisting
Unit V
TWISTING IN ALTERNATIVE SPINNING SYSTEMS 9
Principle of twist insertion in open-end spinning; application of this principle in rotor spinning and friction spinning machines; principle of twist formation in air-jet and air-vortex spinning; principle of twist insertion in core spinning, cover spinning and self-twist spinning.
TOTAL 45 PERIODS OUTCOMES:
Upon the completion of this course the student will be able to
- Describe the concept of Ideal drafting and real drafting
- Explain the phenomenon of roller slip and roller nip movement
- Describe the principle of wire point drafting and its comparison with roller drafting and applications
- Elucidate the fundamentals of false twisting and real twisting; twisting in ring spinning
- Describe the theory of twist formation in rotor spinning, air jet and air vortex spinning systems
Text Books:
- Foster G.A.R. The Principles of Roller Drafting and the Irregularity of Drafted Materials, The Textile Institute, Manchester, 1958.
- Lord P.R. Roller Drafting, Textile Progress, The Textile Institute, Manchester, 1993.
- Klein W., New Spinning Systems, The Textile Institute, Manchester, 1993.
Reference Books:
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For detailed syllabus of all the other subjects of Handloom & Textile Technology 5th Sem, visit HT 5th Sem subject syllabuses for 2021 regulation.
For all Handloom & Textile Technology results, visit Anna University HT all semester results direct link.