filament outlet at an end of the meltblowing die methods of forming meltblown webs using such an apparatus are also disclosed application_number US 201213441338 A description referring now to fig1 a schematic view of a meltblowing apparatus 20 is illustrated without the inventive features for background and the establishment of nomenclature a meltblowing apparatus 20 including a meltblowing die 22 is illustrated in a diagrammatic cross section the meltblowing die 22 is used to expel a stream 24 of extended polymeric filaments towards a collection belt 26 moving in direction u201c d u201d is illustrated although a belt is depicted in connection with this embodiment those acquainted with the meltblowing art will understand that other collectors such as a rotating drum may be used for the purpose of collecting conveying and taking off the filaments as media according to conventional practice the meltblowing die 22 is provided with cavities 28 and 30 for directing two streams of heated gas against the stream 24 of polymeric filaments just after the stream 24 has been extruded from a line of extrusion orifices 32 the heated gas jets emerging from cavities 28 and 30 extend and thin the filaments emerging from the extrusion orifices 32 so that the filaments have the proper size and dispersion to form the desired media 34 upon the collector 26 the meltblowing apparatus 20 further includes a pair of ducts 40 and 42 one upstream and one downstream of the stream 24 compared to the direction u201c d u201d secondary flow is expelled from.