TT2021 TEXTURED YARN TECHNOLOGY ANNA UNIVERSITY SYLLABUS

UNIT I 9

Need for bulking of synthetic fibres – texturing – basic definition and classifications –

developments in high speed spinning – POY.

UNIT II 9

Heat setting – need-factors involved – types of setting – effects on fibre morphology and

mechanical properties – fundamentals of thermo-mechanical texturing – Helanca

process.

UNIT III 9

Basics of false-twist texturing-texturability of various fibres-process parameters – time,

temperature, twist, tension suitability of POY and UDY for FT texturing – Draw texturing

– simultaneous and sequential draw texturing – twisting devices – testing of textured

yarns.

UNIT IV 9

Basics of air jet texturing – types of yarns produced – feed material structure and

properties of air-jet texturing machines, nozzles, evaluation of air-jet textured yarn vis-àvis

spun and filament false twist textured yarns.

UNIT V 9

Stuffer box and edge crimping methods – principles, limitations, and applications – knitde-

knit and gear crimping methods Bi-component filament texturing – texturing of

polypropylene and jute fibres – Chemo-mechanical and thermo-mechanical texturing

TEXTBOOKS

2. Behery H.M. and Demir A., “Synthetic Filament Yarn Texturing Technology”, Prentice

Hall, 1996, ISBN 0134400259.

1. Hes L. Ursiny P., “Yarn Texturing Technology”, Eurotex, U.K., 1994.

REFERENCES

2. Wilson D.K. and Kollu T., “Production of Textured Yarns by the False Twist

Technique”, Textile Progress, Vol. 21, No.3, Textile Institute, Manchester, U.K.,

1991.

3. Gupta V.B. (Edr.), “Winter School on Man-made Fibers – Production, Processing,

Structure, Properties and Applications”, Vol. 1, 1988.

4. Wilson D.K. & Kollu T., “Production of Textured Yarns by Methods Other than False

Twist Technique”, Text. Prog., Vol. 16, No.3. Textile Institute, 1981.

5. Demir & H. El-Behery, “Synthetic Yarn Production”, Prentice Hall Inc., 1996.1. Gulrajani M.L. (Edr.), “Annual Symposium of Texturing”, I.I.T Delhi, 1977.