Process and apparatus for producing monofilament nonwovens

The practicability of the invention extends to the production of specifically fixed monofilament nonwovens which are primarily suitable for the technical sector. The object of the invention is to achieve a high tearing elongation of the monofilaments along with a low energy consumption, whilst the monofilament speed is to be brought significantly nearer to the air speed in the drawing-off channel as a result of an increase of the drawing-off forces. The solution according to the invention provides the supply of a diffuse air flow above the drawing-off channel, which is directed by a suction flow of corresponding air quantity which is generated underneath the delivery belt and which is propagated in the drawing-off channel. The large channel length possible thereby imparts to the monofilaments high drawing-off forces which are at a maximum at the point where the monofilaments have the temperature of the conclusion of the deformation-related imparting of orientation. The walls of the drawing-off channel have an inclination of 0 DEG