Process for the production of nonwoven webs including a drawing step and a separate blowing step

Claim 1

A process for the production of nonwoven webs from one or a plurality of filament forming polymers, comprising the steps of providing a first spinning beam, providing a second spinning beam parallel to the first spinning beam, providing the first spinning beam and the second spinning beam with a plurality of nozzles wherein the nozzles have straight rows of holes and the straight rows of holes of one particular nozzle on the first spinning beam are in staggered and overlapping relation with the straight rows of holes of another nozzle on the second spinning beam, spinning out of the nozzles on the first and second spinning beams two respective filament rows, said spinning step entailing the incidental production of spinning vapors, drawing said filament rows, and laying said filament rows down to form a web, wherein said process further comprises providing outlet means and inlet means, one of said means being disposed on the outside of each said filament row and the other of said means being disposed at a location intermediate said two spinning beams as viewed in vertical projection, and also comprises, prior to said drawing step, the separate step of blowing said filament rows perpendicularly thereto from said outlet means to cool said filament rows, and sucking off the spinning vapors into said inlet means.