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SPINNING TECHNOLOGY-II
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4332902
Code: 4332902
Credits: 4
Semester 3
ICT
Spinning Technology-II
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Spinning Technology-II Syllabus — Unit-wise Content
The official GTU curriculum for Spinning Technology-II (subject code 4332902) as prescribed for ICT · Semester 3 divides the course into 4 units, covering 35 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 (4332902)Unit 1 Draw frame
- 1.1. Objectives of Draw frame.
- 1.2. Principles of drafting & doubling, Effects of drafting & doubling on yarn quality.
- 1.3. Sliver blending in Draw frame.
- 1.4. Passage of material & functions of Important parts in Draw frame.
- 1.5. Creel in Draw frame.
- 1.6. Terminologies used in Drafting system- Actual draft, Mechanical draft, Break draft, Main draft, Drafting force.
- 1.7. Factors influencing drafting force Stick slip phenomena Perfect and real drafting Drafting irregularity Factors influencing drafting irregularity
- 1.8. Elements of drafting arrangements.
- 1.9. Different types of drafting systems used on Draw frame. 3 over 3 roller drafting system with pressure bar 4 over 3 roller drafting system with pressure bar 5 over 4 roller drafting system with pressure bar
- 1.10. Different types of Top roller weighting Systems. Dead weight weighting system Top arm weighting system Magnetic weighting system
- 1.11. Electrical stop motion. 1.12Routine maintenance in draw frame.
- 1.13. Technological design change in modern Draw frame. Spinning Technology-II Course Code: 4332902 Topics and Sub-topics Drafting roller arrangement. Top roller weighting arrangement. Online monitoring and auto leveling. Suction arrangement. Automation in doffing. Power driven creels. Sliver guides. Safety measures.
- 1.14. Drawn sliver defects, their causes & remedies.
Unit 2 Comber preparatory process
- 2.1. Influence of Combing operation on fiber length distribution curve Baer Sorter Diagram
- 2.2. Requirements of the card with respect to Combing. Card sliver purity Card sliver evenness
- 2.3. Requirements of the draw frame with Respect to Combing. Pre-drawing (Breaker Draw frame)- combing preparation Post drawing (Finisher Draw frame) - combing process.
- 2.4. Requirement of the even passage between Card and Comber.
- 2.5. Preparation of stock for Combing.
- 2.6. Combing preparation process Lap/Web Doubling (Conventional process) Brief study of Sliver lap machine. Brief study of Ribbon lap machine. Limitation of conventional Sliver lap and Ribbon lap sequence.
- 2.7. Sliver Doubling (Modern process) Detailed study of Super lap former.
Unit 3 Comber
- 3.1. Objects of Combing, value of Combing.
- 3.2. Types of Combing.
- 3.3. Detail study of cycle of operation in Comber.
- 3.4. Brief study of following motion in Comber. -Feeding, Nipping, Cylinder combing, Top comb combing, Detaching.
- 3.5. Noil Extraction Theory Noil elimination with counter (backward) feed Spinning Technology-II Course Code: 4332902 Topics and Sub-topics quality of Combed sliver.
- 3.6. Parameters influencing the Combing Operation. Raw material (fibre length, uniformity, stiffness, fineness, impurities). Material preparation (fiber parallelization, batt thickness, batt evenness, orientation of hooks). Factors associated with machine (condition of comb, nips/min, operation of comb, sliver forming element, drafting arrangement). Machine settings (feed/nip, feed type, detachment setting, tooth density in comb, penetration of top comb, piecing). Ambient conditions (temperature, humidity).
- 3.7. Define the combing efficiency.
- 3.8. Waste extraction & its control-waste Setting.
- 3.9. Combed sliver defects, their causes &remedies.
- 3.10. Routine maintenance of Comber.
- 3.11. Significant developments in combing. Cylinder clothing Increase in nips per minute Optimizing lap strength Clamping line distance Concentric nipper movement Additional gripping arrangement Asymmetric web pan Safety measures
- 3.12. Reusable fibre waste recycling process in Comber.
Unit 4 Production calculation
- 4.1. Production calculation for Draw frame, Lap former &Comber.
- 4.2. Calculate draft & production of Draw frame.
- 4.3. Calculate draft & production of Comber. 4.4Calculate draft & production of Lap former.
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