Ring cops conditioning: a key factor in achieving optimal winding machine performance

Purpose This study aims to investigate the effect of yarn conditioning sequence, pre-winding versus conventional post-winding, on yarn quality and winding performance across different fiber compositions. Design/methodology/approach Ring-spun yarns of 100% cotton, 60/40 cotton–polyester blend and 100% polyester were produced and divided into two groups subjected to pre- and post-winding conditioning. Yarn evenness, imperfection index, hairiness, tensile strength, splice strength, classimat faults and splice morphology were evaluated under standardized laboratory conditions. A one-way analysis of variance was applied to determine the statistical significance of differences between the two conditioning processes. Findings Pre-winding conditioning significantly improved yarn performance for 100% cotton and polyester yarns, resulting in lower mass variation, reduced imperfections, improved tensile and splice strength and fewer winding faults. Polyester yarn showed mechanical enhancement with minimal change in mass variation. Blended yarn exhibited negligible differences between conditioning sequences. Microscopic analysis confirmed better splice and yarn structure with pre-conditioning. Originality/value This research introduces a novel conditioning sequence at the cop stage, demonstrating its industrial feasibility and effectiveness in improving yarn integrity, splice quality and winding reliability, offering practical guidance for process optimization.