A roller compactor is an industrial machine present in the pharmaceutical, food or chemical industries. This equipment is used in dry granulation processes (agglomeration of dry powder particles).
Dry granulation has the following advantages :
No use of humidity or liquid to bind the powder particles together
No exposure to temperature for drying.
In the past, dry granulation was mainly carried out by slugging. However, roller compaction is now the most popular method as it offers a higher production capacity and simplified maintenance/monitoring.
Roller compactors are used to force agglomerate fine powders containing active ingredients and excipients. This process allows the transformation of powders into suitable granules with a controlled density, size and shape.
These machines combine several pieces of equipment:
A – Feed hopper for pouring the powder
B – Powder transfer and feeding system to the rollers (usually screw conveyor)
C – 2 compaction rollers where the powder is compacted, by applying a precisely defined force and a calculated gap between the rollers, to produce a ribbon of ground particles.
D – Sieve mill / granulator (fixed or mobile) for the size reduction of the previous product into granules of desired sizes (grinding).
Famous brands: Alexanderwerk, Gerteis, Bepex, Fitzpatrick