A device for discharging particulate material, for example powder material, granules or capsules, or in general free-flowing material, such as adhesive material, on a substrate moving along a conveying direction, includes at least one drum rotor having at least one helical track carrying the material to be discharged. The drum rotor is arranged adjacent to the moving substrate, with its axis substantially parallel to the conveying direction so that the portion of the at least one helical track which is closest to the substrate moves in the conveying direction during rotation of the drum rotor and discharges the material carried thereby on the substrate.