A process for producing a thermoplastic nonwoven fabric having a uniform thickness and optionally napped fibers according to a melt blowing method, which comprises blowing a fiber stream consisting of melt blown fibers and a gas at a high speed onto a plate within a valley-like fiber-collecting zone...http://www.google.de/patents/US4375446?utm_source=gb-gplus-sharePatent US4375446 - Process for the production of a nonwoven fabric
