Patent ID: 6984350
Filing Date: 2006-01-10
Classification: D01D,D04H

Abstract:
1. A method of manufacturing a transversely aligned web in which filaments are aligned in a transverse direction, comprising the steps of: preparing a spinning means including a plurality of nozzles arranged in parallel with a machine direction of a conveyer for extruding molten polymer in the form of filaments, a high-speed fluid blowing unit for blowing a high-speed fluid in a direction parallel with an extruding direction of the filaments to thereby attenuate the filaments extruded from said plurality of nozzles, and at least one air stream vibrating means for cyclically changing a flowing direction of the high-speed fluid blown from said high-speed fluid blowing unit toward the direction cross to the machine direction of said conveyor; extruding the molten polymer in the form of the filaments from said nozzles; blowing said high-speed fluid to attenuate the filaments extruded from said nozzles by a frictional force applied by said high-speed fluid; and changing cyclically the flowing direction of said high-speed fluid by said air stream vibrating means to thereby while cyclically changing a movement of said filaments in the direction cross to said machine direction, accumulating said filaments onto said conveyor, wherein the air stream vibration means includes a member which rotates or swings around an axis parallel with the machine direction of the conveyor.