The output from the draw frame is fed into the roving frame (also called ‘speed frame or simplex machine or flyer frame‘) where the linear density of sliver is reduced by drafting and the resultant product is called the roving. After the drafting operation, the roving is wound on the bobbin. During winding, a little amount of twist is imparted to the roving.
Functions of Speed Frame Machine:
To draft the sliver to reduce weight per unit length
Conversion of sliver into roving
To insert small amount of twist
To wind twisted strand on the bobbin.
To make conical or tapper shape of the bobbin.
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