Unit 1 Principles of texturing and modern classification of Textured yarn,

9 lecture hours

• Methods of manufacturing Textured Yarns
• Comparison of different texturizing methods optimization of texturing parameters
• Draw- texturing- the need and fundamental approaches
• Mechanics of texturing
• Physical and mechanical properties of textured filament yarn structure and geometry of textured yarns – Role of spin finish on textured yarns

Unit 2 False-twist texturing – Basic principle, Mechanism, Process parameters,

10 lecture hours

• texturasibility of various fibres – process parameters – Draw texturing – simultaneous and sequential draw texturing

Unit 3 Air jet texturing - Principle, mechanisms, Air jet texturizing machine,

9 lecture hours

• development of jets and machinery
• process optimization and characterization
• air jet textured yarns application
• Air interlacement - Principle and mechanism
• jet development and Characterization
• air jet texturing of spun yarns

Unit 4 Friction texturing- the need and development, mechanics of friction

• latest development in twisting devices. 8 19%

Unit 5 Bulked continuous filament yarns – BCF draw texturing machine,

9 lecture hours

• Process variables
• BCF yarns
• Modification of yarn properties during draw texturing