The last stage in the manufacture of yarn
is spinning. In order to convert the roving into the
required counts main operation which are simultaneously
carried out off the ring frame are twisting and winding.
The roving received from the fly frame
department is still much thicker than the thickness final
yarn required. Therefore the first process on the ring frame
is drafting. Ring frame drafting system commonly used are
A-500, A-600, GX-2, SKF-PK-211 and UT 3E etc.
The other operation which are done in the
ring frames are twisting and winding.
The amount of twist inserted here is
larger than at any other previous stage on order to
strengthen for the end use required. The twisted yarn in
wound on bobbins.