Theory of Yarn Formation
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Follow on Instagram for UpdatesTheory of Yarn Formation Syllabus — Unit-wise Content
The official GTU curriculum for Theory of Yarn Formation (subject code ME02025011) as prescribed for TE · Semester 2 divides the course into 6 units, covering 40 listed topics. The unit-wise breakdown below is read from the GTU syllabus document for this subject code, so you can check what the course actually covers before deciding which papers to attempt.
Download the official syllabus PDF (ME02025011)Unit 1 Forces on fibers during opening and cleaning process and its effect;
- Theories of carding
- transient state of carding machine
- analysis of cylinder load and transfer efficiency
- average number of revolution of fiber on cylinder and fiber mixing in card
- Fiber shedding from Program Name: Master of Engineering Level: PG Branch: Textile Engineering Subject Code : ME02025011 Subject Name : Theory of Yarn Formation cylinder
- effect of centrifugal force and air drag
- role of wire geometry on fiber shedding
- carding force between cylinder and flat and factors influencing it, hook formation in carding
Unit 2 Analysis of fiber configuration in draw frame sliver; hook removal and
- its significance
- Sliver irregularity
- Fiber movement in drafting field
- suppression of drafting wave
- Drafting force
- Roller slip
- Roller eccentricity and vibration
Unit 3 Boundary length in forward and backward feed comber, fiber fraction
- in comber
- action of top comb
- wavelength of piecing wave
- differential combing
- effect of batt weight in combing
- probabilistic model for calculation of comber noil and effective noil removal
Unit 4 Analysis of forces on yarn and traveler, Spinning tension in ring and
- rotor spinning
- spinning geometry
- Twist flow in ring and rotor spinning
- Balloon theory in spinning
- mechanism of end breaks in ring and rotor spinning
- probability model of end breaks
- roller lapping and its prevention
- aprons and cots
Unit 5 Yarn formation in rotor spinning, fiber flux, fiber overlap and gap of
- fiber layer in rotor groove
- change in fiber orientation in rotor spinning
- generation of wrapper fiber
- property relation of rotor
Unit 6 Friction spun yarns, fiber arrangement in friction spun yarns,
- principles of yarn formation
- torque on yarn
- composite yarn spinning in friction spinning
- Airjet and vortex technologies
- role of edge fibres
- classification of rotor and air jet yarn
- development in compact spun yarns
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