Unit 1 Drawbacks of a shuttle loom, Basic principle of the shuttle less system, Functional principles

12 lecture hours

• of shuttle less weft insertion Projectile loom: Partially guided solid carrier i.e. projectile or gripper
• Types of projectiles and projectile guides
• torsion picking mechanism
• projectile brake system
• cam beat-up mechanism
• cycle of operation in projectile loom
• Typical velocity and acceleration profiles of picker shoe along with a velocity profile of gripper Rapier Loom: Fully guided solid carrier i.e. rapier system of weft insertion – Flexible and Rigid system and their cycle of operation
• Rapier heads design
• study of weft velocity on rapier
• Functional description of flexible rapier weaving machine

Unit 2 Basic concepts of fluid carrier i.e. Air jet and water jet

12 lecture hours

• Air-jet: Yarn insertion Systems
• Principles of Air jet filling insertion
• Types of nozzles and guides
• Performance of yarns in air jet insertion
• Functional characteristics of modern air jet weaving machines
• Water jet: Requirements of water for water jet loom
• Weft insertion on water jet loom
• Picking mechanism
• Features of modern water jet loom -advantages & problems
• Weft waste on jet loom

Unit 3 Nonwoven

• Market growth of nonwoven industry
• Raw materials 10 Subject Code: 3152909 w.e.f