The dragee coating assembly (15), for coating cores, has at least one powered rotating drum (1) where they are covered by one or more coating material layers or are otherwise treated e.g. spraying or drying. The cores are delivered into the drum in small charges at the drum entry in cycles for processing in individual drum chambers (7-13). The chambers are formed by the longitudinal conveyor (3) carrying the charges and the inner drum wall. The products rotate constantly in the rotating drum without a longitudinal movement, and the conveyor transfers the products as required from one processing station to another, with a passage between chambers if required.
