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Tuesday, July 24, 2012

TT 2203 SPUN YARN TECHNOLOGY I SYLLABUS | ANNA UNIVERSITY B.TECH TEXTILE TECHNOLOGY 3RD SEMESTER SYLLABUS REGULATION 2008 2011-2012

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TT 2203 SPUN YARN TECHNOLOGY I SYLLABUS | ANNA UNIVERSITY B.TECH TEXTILE TECHNOLOGY 3RD SEMESTER SYLLABUS REGULATION 2008 2011-2012 BELOW IS THE ANNA UNIVERSITY THIRD SEMESTER B.TECH. TEXTILE TECHNOLOGY DEPARTMENT SYLLABUS IT IS APPLICABLE FOR ALL STUDENTS ADMITTED IN THE YEAR 2011-2012 (ANNA UNIVERSITY CHENNAI,TRICHY,MADURAI,TIRUNELVELI,COIMBATORE), 2008 REGULATION OF ANNA UNIVERSITY CHENNAI AND STUDENTS ADMITTED IN ANNA UNIVERSITY CHENNAI DURING 2009


TT 2203 SPUN YARN TECHNOLOGY I L T P C
4 0 0 4
AIM
To impart basic knowledge of various preparatory processes in Yarn manufacture.
OBJECTIVES
Students will be familiar with
Mechanism, Working and implication of Ginning process
The operation and manipulation of process parameters in
- Opening and Cleaning machines
- Card
- Draw Frame
- Comber
- Speed frame
UNIT I GINNING AND BLOWROOM 12
Objectives of ginning, Study of working of different gins – Knife roller gin, Saw gin.
Ginning out-turn. Effect of ginning performance on yarn quality – Power requirement in
ginning.
Objectives of blowroom. Principle and description of Opening, Cleaning and Blending
machines. Concepts of Opening intensity and Cleaning efficiency. Settings and speeds
of various Openers/cleaners. Sequence of machines in modern blowroom line.
Blowroom line for cotton and man-made fibres and their blends. Dust extractors, Filters,
Waste collection. Mechanism of lap formation, Chute feed. Power requirement in
blowroom.
UNIT II CARDING 12
Objectives of carding. Basics of Opening, Cleaning and fibre individualisation. Study of
working of semi high production, high production cards. Speeds and setting of functional
elements. Concept of auto levelling in carding. Drives, Card clothing and Production
calculation. Concept of Cylinder loading and the factors influencing it. Latest
developments in carding to increase production and sliver quality.
27
UNIT III DRAWFRAME 12
Basic principles of doubling and drafting. Description of working of various drafting
systems. Concept of roller flutes, roller setting, roller pressure, web condensation and
roller lapping. Study of stop motions. Draft and production calculation. Effect of roller
defects, roller setting, roller pressure, break draft and draft distribution on sliver quality.
Process parameters for processing cotton, man-made fibres and blends. Working of
autoleveller on drawframe. Developments in drawframe machines. Influence of
drawframe sliver quality on yarn characteristics.
UNIT IV COMBER 12
Requirement and objectives of comber preparatory process. Methods of lap preparation
– lap doubling process, sliver doubling process, their merits and limitations. Objectives
and principles of combing. Working of comber – sequence and timing of operations in
combing. Types of feeding – concurrent feed and counter feed, Degree of combing.
Combing efficiency. Concept of piecing waves, asymmetric web condensation. Comber
waste in relation to pre-comber draft, direction of fibre hooks, type of feed, top comb
setting. Settings and production calculation. Determining optimum level of comber waste
for different mixings and yarn counts. Introduction to modern combers.
UNIT V SPEEDFRAME 12
Objectives of speedframe. Principle of working of modern speedframe. Differences
between bobbin lead / flyer lead roving processes. Mechanism of winding and bobbin
building. Settings and speeds. Draft, twist and production calculations. Effect of roller
setting, roller pressure, apron spacing on roving quality. Importance of roving quality on
ringframe performance and yarn quality.
TOTAL : 60 PERIODS
TEXTBOOKS
1. Klein W., Vol. 1-3, “The Technology of Short Staple Spinning”, “A Practical Guide to
Opening & Carding” and “A Practical Guide to Combing, Drawing, and Roving
frame”, The Textile Institute, Manchester, U.K., 1998.
2. Chattopadhyay R. (Ed), Advances in Technology of Yarn Production, NCUTE, IIT
Delhi, 2002.
REFERENCES
1. Chattopadhyay R., Technology of Carding, NCUTE, IIT Delhi, 2003.
2. Chattopadhyay R. & Rengasamy R., “Spinning, Drawing, Combing & Roving,
NCUTE Pilot Programme.
3. Salhotra K. R. & Chattopadhyay R., Book of papers on “Blowroom and Carding”, IIT
Delhi 1998.
4. Duraiswamy I, Chellamani P & Pavendhan A., “Cotton Ginning” Textile Progress,
The Textile Institute, Manchester, U.K., 1993.
5. Lord P. R., Yarn Production: Science Technology and Economics”, The Textile
Institute, Manchester, U.K., 1999.

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