| US 7,429,407 B2 | ||
| Process for coating small bodies, including tablets | ||
| Kim Torben-Walter, Columbia, Md. (US); and Mark Arthur Neidlinger, Columbia, Md. (US) | ||
| Assigned to Aeromatic Fielder AG, Bubendorf (Switzerland) | ||
| Filed on Sep. 16, 2003, as Appl. No. 10/662,816. | ||
| Application 09/709560 is a division of application No. 09/223311, filed on Dec. 30, 1998, granted, now 6,209,479. | ||
| Application 10/662816 is a continuation in part of application No. 10/627914, filed on Jul. 28, 2003, abandoned. | ||
| Application 10/627914 is a continuation of application No. 09/709560, filed on Nov. 13, 2000, abandoned. | ||
| Prior Publication US 2004/0131791 A1, Jul. 08, 2004 | ||
| Int. Cl. B05D 1/02 (2006.01) | ||
| U.S. Cl. 427—424 [427/425; 427/427; 118/300; 118/313] | 9 Claims |
| 1. A non-fluidized bed process for coating bodies comprising:
producing an upward spray of coating fluid by means of a two-fluid nozzle to create a coating zone, and
contacting said bodies with said spray of coating fluid in said coating zone; wherein,
before contacting said bodies with said spray, providing the bodies with a spinning movement by a central impact of gas jets
directed upward to intersect the centerline of said spray;
guiding the spinning bodies by said gas jets towards a central position over the two-fluid nozzle, thereby increasing the
number of suspended bodies contacting the spray;
providing atomization gas to the two-fluid nozzle in an amount less than the one which, after moderation by means of muffling
gas, would scatter the bodies in the spray zone; and
pneumatically muffling the atomization gas just above the nozzle to reduce the body scattering effect thereof; and further
wherein,
said bodies are pneumatically transported in said coating zone in a non-fluidized state.
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