A COMPARISON OF THE PROPERTIES OF RING-SPUN AND ROTOR-SPUN YARNS
A COMPARISON OF THE PROPERTIES OF RING-SPUN AND ROTOR-SPUN YARNS
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Date
1987-03
Authors
BRAIMAH, JOHN ABDULLAHI
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Abstract
Ring and rotor yarns were spun from a blend of cotton fibres
using a range of almost similar twist factors. A study was carried
out to assess the influence of twist on the physical properties of
the two types of yarn, and to use these results to draw a comparison
of the properties of the rotor-spun yarns against those of the
equivalent ring-spun yarns.
From the results obtained it is clear that in addition to the
influence of twist, other factors such as fibre properties and machine
design also have an influence on the properties of the respective
yarns. It is shown that slight changes in twist level influence
yarn strength more than yarn breaking extension. Furthermore, the
uniformity and linear density of the ring-spun yarns are appreciably
influenced by twist level, whereas the rotor-spun yarn is relatively
unaffected. Yarn faults and imperfections tend to increase with
twist and it is evident that ring-spun yarn displays superiority in
terms of strength compared to its rotor-spun equivalent. Finally,
the coefficient of twist variation in rotor spun yarns is shown to
be higher than that of the equivalent ring-spun.
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A COMPARISON OF THE PROPERTIES OF, RING-SPUN AND ROTOR-SPUN YARNS