Comparison of Ring Spun and Rotor Spun yarns properties...

Ring Spun Yarn	Rotor Spun Yarn
Uniform with more strength than rotor spun.	Uniform but less strength than ring spun.
Low flexibility.	Higher flexibility than ring spun.
Dye ability is less than open end yarn.	Dye ability is easy and more than ring spun.
These yarns are made coarser to medium and medium to finer.	These are limited to coarser to medium counts.
Used for varied applications.	Used for heavier fabrics such as denims, towels and poplins.
Production rate is lower.	3-5 times faster production rate than ring spun.
Stronger at optimum twist.	It has 20% more twist and 15-20% weaker than ring spun.
All staple fibers could be ring spun. Universally applicable.	Man-made fibers except rayon could not be rotor spun.
It is expensive because of some additional manufacturing steps.	It is cheaper because of elimination of some manufacturing steps such as roving and comber.
It is less abrasion resistant as compare to rotor spun.	It has a good abrasion resistance.
It is less absorbent because of tight packing of fibers.	It is more absorbent because of loose packing of fibers.
It breaks at ring frame because of ring traveler friction.	Yarn breakage is very low so less production loss.
It has more hairiness because of fiber migration during spinning.	It has 20-40% low hairiness as compare to ring spun because of less fiber migration.
It feels harsh because of tight packing of fibers and more hairiness.	It is soft because of loose packing and less hairiness.
Fiber packing is uniform and more towards surface.	Fiber packing is not uniform, more towards yarn axis and less towards the surface.
It has less hooked and looped fibers.	More hooked and looped fibers in rotor yarn.
It doesn’t give self-cleaning effect.	It is dirt accumulative and give very good self-cleaning effect.
It has higher C.V% in strength than rotor spun.	It has less variation in strength.
Ring spun could have more yarn faults.	Yarn faults are decreased by 80%.
Fiber blending is not good in ring spun.	It has much better fiber blending.
It has more fly liberation.	It has less fly liberation.
More end breaks in spinning.	75% less end breaks.
Air permeability is low because of tight packing.	Air permeability is 15-25% better.
It gives less cover in fabric formation.	It gives 10% better cover.
At this time 76% staple spun yarns are ring spun as compare to rotor spun in world.	24% are rotor spun as compare to ring spun production.