Patent ID: 7047607

Claim:
A process for manufacturing an elongated band-shaped non-woven product for use either in a geotextile or as a carrier in a bituminous roofing band, said method comprising the steps of: building up a number of fleeces from fibers or filaments, whereby the fibers or filaments of each fleece are rectilinearly oriented in such a manner that they extend in parallel with respect to each other; determining a predetermined weight for said non-woven product to be manufactured; collecting an amount of said fleeces in order to obtain said predetermined weight; supplying said amount of fleeces to a cross-laying device operating at an adjustable speed; adjusting said speed of said cross-laying device in such a manner that the rectilinear orientation of said fibers or filaments in each fleece of said amount is substantially preserved during a bringing together of said amount of fleeces; bringing together said amount of fleeces by means of said cross-laying device operating at said adjusted speed in order to build-up said elongated band-shaped non-woven product at said predetermined weight; applying strengthening wires in a direction corresponding to a longitudinal direction of said elongated non-woven product; and incorporating said strengthening wires into said non-woven product by using a needling technique.