The influence of yarn twist on fiber migration has been studied by many research workers for various types of fibers and spinning systems. Whereas some have shown that the level of twist has negligible effect on fiber migration, others have reported an increase in the migration as the twist is increased. That the migration passes through a maxima has been reported by yet another author. The present work has been done to study this aspect for rotor-spun yarns. The results show that, contrary to all the findings mentioned above for ring-spun yarns, the rotor-spun yarns exhibit a minima as the twist level is increased. A plausible explanation has been offered for such a behavior.
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