METHOD FOR PRODUCING LOW-SHRINKAGE THREAD (VERSIONS) Russian patent published in 1999 - IPC

FIELD: production of monofilament or multifilament sewing threads. SUBSTANCE: method involves texturing coarse thread in air flow; feeding textured thread to zone, where it is imparted increased bulking, at feed advance mode selected so that coarse yarn might spring in predetermined manner in accordance with yarn fiber elastic stress; twisting coarse yarn of increased bulking and treating in common dyer. Method allows low-shrinkage, textured thread composed of synthetic complex fibers to be produced. EFFECT: increased efficiency in producing thread possessing increased bulking and ultimate strength, and improved stability. 16 cl, 4 dwg, 2 tbl