Abstract

This paper highlights preliminary results related to a new dry granulation process that is run in a twin-screw extruder. This heat-activated dry granulation method can produce suitable dry granules representing an exciting new area for continuous granulation. However, the current method makes starting granulation difficult. It is believed that high compaction produces sufficient friction at the barrel wall to cause the binder to soften. Once a plug of dense granular matter is built up in the kneading section of the screws, it appears that any flow condition will produce granules but establishing this plug initially represents a major challenge and is where further studies are needed to simplify the approach.