Patent ID: 8609807

Claim:
A method of producing low-dust granules of polymer additives or polymer additive mixtures, wherein granule-forming polymer additives are mixed together, the mixture is converted into a workable mass and pressed through an orifice, and the pre-shaped strand-like extruded mass is cooled and, while still in a workable state, formed into granules by rolling, impressing, cooling and comminuting, where the rolling is effected by passing the pre-shaped, still plastic material through two or three squeeze rollers with smooth and polished surfaces and the subsequent impressing is effected by processing the rolled out plastic material with one, two or three linearly embossed shaping rollers, where the material is impressed with a granular structure which provides predetermined breaking points in an impressed product mat and where the impressed product mat is allowed to harden on a cooling belt followed by comminuting to form granules along the impressed lines.