Operations by which slivers are blended (or doubled) levelled, and by drafting reduced to the state of sliver or roving suitable for spinning. In cotton spinning the term is only applied to processing at the drawframe. Various systems of drawing are practised in modern worsted spinning, but with machinery development, and the greater use of man-made staple fibres, the differences are becoming less distinct. Most modern drawing sets incorporate three passages of pin drafting and a roving process. The systems differ mainly in the means of fibre control between the major pairs of drafting rollers and in the types of output package
Textile Resource (http://www.textile.org.uk)
