Abstract: A method and device for manufacturing a continuous material of elongated fibrous particles from a suspension of the fibrous articles with a concentration at least twice as high as the sediment concentration of the fibrous particles, in which the highly concentrated suspension is distributed and deflected in a chamber before the suspension is passed to a decay channel from which the suspension is deposited, is disclosed wherein the suspension is exposed in an intermediate forming channel between the chamber and the outlet channel to a plurality of changes of direction to change the direction which in turn contributes to the local variations of the fibre concentration in the suspension becoming more even.