THE PHYSICAL-PROPERTIES OF COMPOSITE YARNS PRODUCED BY AN ELECTROSTATIC FILAMENT-CHARGING METHOD

A technique is described for the separation of the individual filament s of a continuous-filament yarn, This involves the yam's being treated with a small amount of Permalose TM anti-static agent and the inducti on of electrostatic charges onto the individual filaments. The separat ed filaments are intermingled with a drafted ribbon of fibres at the f ront-roller nip of a ring-spinning frame, to produce 20-tex 70/30 cott on/polyester-fibre filament-blended composite yarns in which a degree of mixing between fibres and filaments was achieved. Cotton ring-spun and the equivalent core-spun yarns were also made to compare their phy sical properties with those of the composite yarns. Twist, fibre lengt h, and the roving-feeding arrangement were varied to observe their inf luence on the yarn properties.