Wurster accelerator with powder applicator
AssigneeFreund-Victor Corporation
InventorsLarry A. Maher, Brian K. Jensen, Shawn M. Engels
Life of this patent
Estimating the term…
Abstract
A Wurster processor and a powder feed system are coupled via an eductor so as to supply dry powder through the air diverter sleeve of the Wurster for discharging onto the circulating particles during operation of the Wurster. Agglomeration and aggregation of the particles is eliminated or minimized by isolating or separating the liquid spray by the spray gun from the dry powder.
Claims15
An method of coating particulate material using a Wurster apparatus having a gun assembly with a spray nozzle for spraying liquid onto the particulate material, and a sleeve surrounding the gun assembly, the method comprising:
- supplying dry powder into the sleeve, and
- discharging the dry powder from the sleeve in a radially outward direction adjacent the spray nozzle to coat the particulate material.
Dependencies are inferred from the claim text.