After a demonstration by Bronkhorst France of a liquid dosing system with a Coriolis mass flow instrument and a gear pump as its main components, Capsulae decided to order this combination. In this compact setup, the virtually pulse-free gear pump is close-coupled to the Coriolis mass flow meter (series mini CORI-FLOW M15), where the mass flow device controls the speed of the pump with an adjustable PID-controller.
By using this equipment, Capsulae adds liquids to the micro-encapsulation manufacturing process with high precision flow rate and repeatability to a high extent. This last feature is demonstrated by a low variation in capsule size distribution, i.e. capsules with regular sizes, leading to cost reduction as hardly any product material is being wasted - which is the real added value of the Bronkhorst solution. Moreover, the amount of liquids in the various capsules batches is highly reproducible. The company is able to produce small, medium or large capsules in the micron to millimeter range in a controlled way.