Patent ID: 7004738

Claim:
An apparatus for producing melt-blown products comprising: a nozzle for discharging thermoplastic synthetic resin filaments collectable to form a melt-blown product; a continuously movable deposit screen below said nozzle for collecting said filaments therefrom as said screen is displaced in a longitudinal direction; a plurality of mutually separated suction areas formed in succession in said direction below said screen for drawing air therethrough to effect deposition of said filaments on said screen, said suction areas being delimited by respective partitions directly separating one suction area from another and reaching upwardly to the screen, said suction areas including a primary suction area directly below said nozzle and drawing a greater quantity of said filaments onto said screen than any other of said suction areas, an initial suction area and a second suction area provided upstream of said primary suction area in said direction, and a third suction area provided downstream of said primary suction area in said direction; and means for adjusting suction speeds in said suction areas independently from one another.