METHOD OF MANUFACTURING NONWOVEN NET FROM POLYMERIC MELT Russian patent published in 1994 - IPC

FIELD: production of nonwoven materials. SUBSTANCE: method involves extruding polymeric material; cooling and drawing formed monofilament by vortex flow of gas; continuous laying of monofilament onto receiving surface. Prior to laying on receiving surface, monofilament is oriented in space between spinneret and receiving surface perpendicularly to direction of extrusion and is simultaneously spun in vortex flow of gas having polymer fusion temperature. Obtained rings of monofilament are laid on receiving surface in spaced relation one with respect to the other for a value equal to half of their diameter, with monofilament temperature being equal to polymer autoadhesion temperature. EFFECT: increased efficiency of method. 3 dwg