Patent ID: 6877971

Claim:
An apparatus for producing a transversely aligned web having filaments aligned in the transverse direction, comprising: a conveyor running in one direction; a spinning nozzle disposed above the conveyor and having an inner diameter of a range from 0.6 mm to 0.85 mm for extruding a melted resin downwardly; an annular primary airflow nozzle having a diameter of at least 2.5 mm formed around the spinning nozzle so as to be concentric with the opening end of the spinning nozzle for blowing off a primary airflow at a high temperature and at a high velocity in the gravitational direction so that a melted filament extruded from the opening end of the spinning nozzle is vibrated; and at least one pair of secondary airflow nozzles disposed on the upstream side and the downstream side of the running direction of the conveyor with respect to the extruded melted filament vibrated by the primary airflow, blowing off secondary airflow at a high temperature toward the extruded melted filament vibrated by the primary airflow so that the secondary airflows blown off from the secondary airflow nozzles on the upstream side and the downstream side of the running direction of the conveyor with respect to the extruded melted filament, respectively, collide with each other below the spinning nozzle.