Complex research of work of spinning equipment by manufacturing of reinforced sewing threads

The work devoted to complex research of the pro­duction technology of reinforced sewing threads 35 LL. These threads consist from two core-spun polyes­ter yarns of linear density 16,7 tex. Machine setting parameters were recommended for improving the quality of core-spun yarns for sew­ing threads manufacturing. The influence of ring spinning machine settings parameters on core-spun yarns properties was determined. It was recognized that the substantial increase of the yarn quality is achieved by reduction of slivers and rovings linear densities. The optimal range of the input tension of polyester filament yarn in the core-spun yarns pro­duction was determined. The trials of produced sewing thread have proven the efficiency of the developed recommendations.