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The Product Containment System (PCS) is designed to contain the product inside the process components in order to prevent airborne dust from escaping into the atmosphere. A second objective of this system is to facilitate operation in an inert environment. The method used to contain the product is similar to isolator technology. The process area is kept under a slight negative pressure to insure that no powder migrates to the outside. Fitzpatrick incorporated many exclusive features to insure a tightly sealed machine, which is critical to this design, however a number of other components are also required to allow for effective operation. The PCS uses several primary filters in the machine discharge. These filters are connected to a vacuum system which maintains the proper condition inside the processing chamber. A Fitzpatrick exclusive backpurge cartridge (patent pending) is utilized to draw process gas in from one filter, in order to backpurge and thereby clean another filter. |