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An abbreviated manufacturing process was developed for production of combined sewing thread. Use of updated ring spinning and spinning-twisting machines allows obtaining sewing thread similar in structure to traditional reinforced thread but with lower process costs. It was found that polyester microfibres should be used to ensure good physicomechanical, process, and performance properties of the...
New technology for manufacture of composite sewing thread using hollow spindles was developed. The manufacturing process for production of sewing thread of 21 tex × 2 structure was optimized, and the optimum values of the basic process parameters were found: first twist of 720–750 tw./m, second twist of 550–570 tw./m. Industrial testing of this sewing thread showed that it has good sewing properties...