Rotor Yarn, its properties and its manufacturing process etc.

Rotor spinning is the widest system in the open-end yarn manufacturing industry. The productivity of this method is high in comparison to the ring-spinning method.

1. Rotor Yarn

2. Table of Contents What is Rotor Yarn Properties of Rotor Yarn Raw Materials Used In Rotor Yarn Spinning Manufacturing process of rotor yarn Rotor Yarn Types Advantage of Rotor Yarn End Uses of Roto Yarn Conclusion

3. What is Rotor Yarn Rotor yarn is formed by twisting the rotor using a rotor spinning machine. It can be produced from short fibers and is typically coarser. Also known as Open End yarn

4. Properties of Rotor Yarn Imperfection index is lower in case of rotor yarn. Less amount of power needed during rotor yarn manufacturing. Stiffness is higher in rotor yarn. Breaking strength is lower in rotor yarn. Mass irregularity is better here. Co-efficient of variation (CV %) of strength is higher here. It has higher abrasion resistance. Possibility of producing rotor yarn count ranges from 3 to 60Ne. Energy consumption with productivity is lower in case of rotor yarn production. Volume is greater here than ring spinning.

5. Raw Materials Used In Rotor Yarn Spinning Short staple spinning m/c (up to 60 mm fibre length) require Cotton (CO) Cotton waste (secondary m/t recycled m/t) Cotton noil Blends of two or more of these materials. Polyester fibres (PES). Poly acrylonitrile fibre ( PAC) Poly amide fibre (PA) Viscose (CA) Blends of man made fibres ( mostly PES/ CV and PAC/CV) Blends of cotton and man-made fibres ( mostly CO/ PES and CO/CV)

6. Manufacturing process of rotor yarn Input Process / Machine Used Output Fibre or Bale management Blow room Lap Lap Carding machine Carded sliver Carded sliver Draw frame Drawn sliver Drawn sliver Rotor spinning Rotor yarn

7. Rotor Yarn Types Siro Yarn Fancy Yarn Melange Yarn Chenile Yarn Gimp Yarn Core Yarn Friction Yarn Wrap Yarn Airjet Yarn

8. End Uses of Rotor Spinning Yarn Upholstery Lace Net curtains House hold fabric Denim Shirting Knit wear Sweater Outer wear fabric Cortains Throusers Blankets etc.

9. Advantages: Lower power consumption per unit quantity of yarn produced Higher speed of twist insertion resulting in very high yarn delivery speed A significant resulting increase in productivity Larger delivered package size Elimination of some processes such as roving and winding more uniform yarns

10. Conclusion: Rotor spinning is the most wide system in the open-end yarn manufacturing industry. The productivity of this method is high in comparison to the ring-spinning method. It has brought revolutionary change in yarn manufacturing industry. Rotor spinning has its great advantages with regard to production rate, use of floor space, and labour. The economic advantages of rotor spinning very soon became evident and have increased in the course of its development with the result that its breakeven point has moved further in the direction of finer yarn counts.

11. Thank you JUNNUN MOJUMDER [email protected]