Patent ID: 6524521
Filing Date: 2003-02-25
Classification: D04H

Abstract:
A method of manufacturing a longitudinally aligned nonwoven fabric, comprising the steps of:preparing a group of nozzles for extruding a plurality of filaments, a conveyor for collecting and delivering the filaments extruded from said group of nozzles, and at least one air stream vibrating mechanism comprising a shaft and a wall surface rotating on the shaft for vibrating a high-speed air stream blown to the filaments; extruding the filaments from said group of nozzles toward said conveyor; carrying the filaments extruded from said group of nozzles with said high-speed air stream to attenuate the filaments; and periodically changing the direction of said high-speed air stream in the machine direction of said conveyor by rotating the wall surface of said air stream vibrating mechanism, thereby collecting the filaments on said, conveyor to form a longitudinally aligned nonwoven fabric.