Yarn Manufacturing - II
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Follow on Instagram for UpdatesYarn Manufacturing - II Syllabus — Unit-wise Content
The official GTU curriculum for Yarn Manufacturing - II (subject code 2142901) as prescribed for Textile Tech. · Semester 4 divides the course into 3 units, covering 49 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 (2142901)Unit 1 Draw Frame
- Design - Constructional features and working principles of drawframe
- Top roller characteristics and maintenance – Processing of cotton
- manmade fibres and blends
- Principles of roller drafting and doubling
- drafting waves and control of fibres
- roller slip and roller eccentricity
- Evolution of drafting systems at drawframe
- Developments in drawframe drafting
- Auto-leveller in drawframe
- On- line quality monitoring and control
- Causes and remedies
- Latest developments
Unit 2 Comber
- Requirements of the Card
- Draw frame etc. with respect to combing
- Preparation for combing/Comber lap preparation
- Introduction and objects of combing process
- History of comber development
- Types of Application
- Types of Comber
- Passage of Material through Combing machine
- Sequence of operations in a Comber
- Important elements of Combing – Feed Roller
- Nipper Assembly
- Combing cylinder
- Top Comb etc
- Take up of Web, Coiling the sliver
- Waste Removal etc
- Parameters influencing the combing operation
- Temperature and Humidity in Combing
- The influence of machine components and settings on combing
- Influence of the feed stock on combing
- The noil theory of Gegauff
- Common defects and their causes during the Combing process
- control of Comber waste
- Modern Developments
- Calculations - % of comber noil
- comber production etc
Unit 3 Speed Frame 15 31 %
- Concept of drafting
- twisting and winding process
- working principles of speed frame: Creel – drafting system – top and bottom rollers – top arm drafting system – roller settings – roller weighting systems
- types of flyers and spindles
- bobbin rail and spindle rail
- drive to different parts of machine
- spindle lead and bobbin lead
- Study of mechanisms like – differential motion
- swing motion
- building mechanism
- semi-automatic and automatic doffing, etc
- Latest developments
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