- •The rotor , & hence the fibre ring , revolve continuously under the stationary feed tube - as also does the spun yarn in the binding-in zone.
- •A stream of individual fibres flows from the feed tube & is deposited in the groove.
- •Normally , incoming fibres that have not yet been twisted in, but, in the binding -in zone , they strike an already-twisted yarn section rotating around its own axis.
- • Fibres arriving here can not be bound into the strand:
- •They wrap themselves around the yarn core in the form of of a band , called wrapping fibres.
- •This is a typical characteristic , & simultaneously an identification feature, of rotor spun yarns.
•The number of wrapping fibres is dependent ,
among other things, upon :-
- –The position at which the fibres land on the rotor wall.
- –The length of binding-in zone.
- –The ratio of the fibre length to the rotor circumference.
- The false twist level.
- –The rotor rpm . &
- – Fibre fineness.
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