Coating fluid bed

Figure 10. Elements of a typical air handling system for fluid bed coating.

Figure 5.11 Real horizontal fluidized bed granulator. Reprinted from Teunou, E. and Poncelet, D., Batch and continuous fluid bed coating review and state of the art, /. Food Eng., 53 (2002) 325-340, with permission from Elsevier.

Figure 2 Schematic diagram highlighting the basic concepts of fluid-bed coating equipment.

Gun-to-tablet-bed distance There are very few examples of a truly scientific approach being taken to establish appropriate positioning of spray guns inside coating pans (unlike with fluid-bed coating machines where gun... 

Each of these processing concepts, which can all be supplied by each of the major vendors of fluid-bed coating equipment, has special characteristics that make it suitable for certain tasks, as shown in Table 11. Although the concepts outlined in this table represent those that are frequently used in the industry today, some specialized fluid-bed processes, the operating principles of which fall outside those of the three listed, are also worthy of note. Examples would be the Kugelcoater (which is manufactured by BWI Manesty in Europe), and the Precision Coater (manufactured by GEA). 

Scale-Up of Fluid-Bed Coating Processes A Case Study... 

Each of these processing concepts, which can all be supplied by each of the major vendors of fluid bed coating equipment, has special characteristics that makes it suitable for certain tasks, as shown in Table 11. Although the concepts... 

F. N. Christensen and P. Bertelsen. Qualitative description of the Wurster-based fluid-bed coating process. Drug Dev. Ind. Pharm. 23 451-463, 1997. 

E. Teunou and D. Poncelet, Fluid bed coating, in Encapsulated and Food powders, edited by C. Onwulata and R. Konstance (Marcel Dekker, New York, 2005), pp. 197-214. 

Sherony, D. F. (1981), A model of surface renewal with apphcation to fluid bed coating of particles, Chem. Eng. Sci., 36, 845-848. 

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