This document discusses different types of spinning systems used to process staple fibers into yarns. It describes the main types as ring spinning, compact spinning, open end spinning, and air jet spinning. For each type, it provides information on the typical yarn count ranges, fiber properties required, and basic processing steps. It also compares the production efficiency and quality differences between conventional and modern spinning systems. Finally, it discusses important factors to consider regarding fiber quality and its impact on yarn quality and production costs.

1. Spinning SystemsLearning the differences

2. What is spinning? The act or processing of converting staple or short lengths of fiber into continuous yarns.Dictionary.com

3. Most common types of spinning for apparel fabricsRing Spinning

4. Compact

5. Open End

6. Air jetProcessing TableConventional Fiber CP SynCarding x xDrawing x x*Lap wind x Combing x Drawing x xRoving x xSpinning x xWinding x xProcess 8 6Modern Fiber CP SynCarding x xDrawing x x*Lap wind xCombing xDrawing x xSpinning x xProcess 6 4

7. RovingYarn count ranges: 6’s to 250’sFibers: (1) Long (2) Fine (3) StrongRing Spinning

8. Yarn count range: 6’s to 250+Fibers: (1) Long (2) Fine (3) StrongRovingairPerforated DrumCompact Spinning

9. Yarn StructureCompactRing Spun - SiroRing Spun

10. Ringspun yarnSwissCotton RoyalConventional Ring Spun Versus Siro

11. Why Royal Spun?Very good pilling values and durability (Pilling (Martindale) improved by 1.0 to 1.5 grades)

12. Less surface hairiness, clear mesh structure

13. Excellent evenness of knit fabrics

14. Less fiber accumulations knitted into the fabric

15. Luster

16. Great alternative to plied yarns

17. Less energy

18. Softer than plied yarns

19. More economical than plied yarnsModern systems are typical “Sliver to Yarn” systemLess Processing !!!Refer to Slide 4

20. Open End - Schlafhorst

21. Open End - Rieter

22. Typical yarn count range: 6’s to 30’sFibers: (1) Fine (2) Strong (length is not as important as ring spinning)RotorYarn PackageFeed RollSliverCondenserTransport Air ChannelVdf, MfSliverCombing RollFeed PlateTrashOpen End Rotor Spinning

23. Typical yarn count range: 20’s to 60’sFibers: (1) Long (2) Strong (length is not as important as ring spinning)Main DraftBack RollerbMiddle RollerApron PressureHFront RollerkN1N2Spinning TensionWrapping FibersParallel FibersCore of Murata Air Jet Spinning

24. Open End Spinning

25. Murata Vortex

26. Rieter Air JetStill very new in the market…

27. RovingSpinning Efficiency and Endsdown:Key Fiber Properties by the order of importance:Main DraftRotorYarn PackageBack RollerbMiddle RollerApron PressureHFront RollerFeed RollkN1SliverCondenserTransport Air ChannelVdfN2Spinning Tension, MfFibersWrapping SliverShort Fiber lengthTrash content Roving twist levelTrash contentShort Fiber content Sliver UniformityTrash contentShort Fiber ContentSliver UniformityCombing RollParallel FibersCore of Feed PlateTrashFiber Quality Impact

28. Energy Comparison

29. Different Yarn Counts = Different Quality LevelsDo all yarns within the same spinning system require the same type and quality of fibers?

30. FQI Upland Cotton ELS Cotton Min 3.0 10.0Max 10.0 15.0FL = HVI Fiber Length (inch)FS = HVI Fiber Strength (g/tex)Mic = MicronaireFiber Quality Index (FQI)

31. Different Yarn Counts Require Different Fiber Indexes