Method and a drum coater for coating small items, such as tablets, and a coating system comprising such drum coaters

摘要

The drum coater comprises a substantially cylindrical drum (11) with a peripheral wall and a substantially horizontal axis of rotation. The method comprises providing a coating zone within the drum, feeding tablets into the drum, spinning the drum containing the tablets at a rotational speed such that a substantially annular bed of tablets is created, providing means for creating a cascade (19) of tablets at least in a part of the coating zone and spraying the tablets in the coating zone.