What are the effects of draft?
Main effects consequential to draft are the following: • Changes of inter-fibre conditions • Reduction of draft material section • Reduction of fibre number per section • Lengthening of material proportionally to draft • Reduction of material weight in g/m after draft • Increase of the metric Nm count proportionally to draft Some draft effects are pursued as main targets within technological processing; among these there are: • Even fibre spacing during combing passages • De-felting during after-dyeing, after-packaging or after wet-treatment passages • Fibre undoing and parallelization during pre-combing passages • Regular sliver refinement during spinning preparation passages Draft amount should be selected according to fibre nature and fibrous diagram.
