left to form the meltblown web 20 the collector belt 34 is perforated to permit the air to flow through the collector belt 34 and into the air management system 12 similarly to form the spunbond web 22 the spunbond die 30 extrudes a plurality of thermoplastic filaments or fibers 38 onto the meltblown web 20 being transported by the moving collector belt 34 hot air indicated by arrows 40 from the spunbond die 30 impinges upon the fibers 38 to impart rotation to the fibers 38 additionally air ducts 42 direct quenching air onto the extruded fibers 38 to cool the fibers 38 before they reach the meltblown web 20 as with the upstream station 14 the air at downstream station 16 passes through the nonwoven web 20 and the collector belt 34 and into the air management system 12 several cubic feet of air per minute per inch of die length flow through each station 14 16 during the manufacture of the melblown and spunbond webs 20 22 the air management system 12 of the invention efficiency collects and disposes of the air from through the stations 14 16 more importantly and as will be discussed in greater detail below the air management system 12 collects the air such that the air has a substantially uniform flow velocity at least in the cross machine direction as the air passes through the collector belt 34 ideally the fibers 32 38 are deposited on the collector belt 34 in a random fashion to form the metlblown and spunbond webs 20 22 which are homogeneous if the air flow velocity through the collector.