Roving

Roving is done in the roving machine. The task of this machine is to transform the sliver coming from the drawframe into roving. It is present in the carded ring spinning cycle and in the combed ring spinning cycle, in the first case it is found following the post-carding drawframe (one or two drawing steps), while in the second case after the post-combing drawframe.

Transforming the sliver into roving occurs in a continuous manner through three stages:

• Drawing
• Twisting 
• Winding

Task Of Roving Frame

1. Attenuation- drafting the sliver into roving 
2. Twisting the drafted strand 
3. Winding the twisted roving on a bobbin 

The Factors Affecting Roving Strength are as follows 

• The length, fineness, and parallelisation of fibres
• The amount of twist and compactness of the roving
• The amount of twist and compactness of the roving