Abstract
Long and medium cotton wastes, either individually or blended with lower grades of cotton were blended to produce open-end yarns. The effect of blending ratios of the waste on the properties of produced yarn have been exaimend. Different blowing rooms, single and tandem card, one and two drawing passages were used to process the silvers for open-end yarns. In addition BD 200 Rc and platt sacelowell open-end spinning machines were used. It was found that the waste of long staple Egyptian cotton, containing considerable amount of good fibres is suitable for open-end processing. Blended wastes of long fibres with lower grade raw cotton slightly decrease the quality of open end yarn. Tandem card is more suitable for sliver preparation of open-end yarns produced from waste.
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