Process for coating small bodies, including tablets

Details Process for coating small bodies, including tablets Process for coating small bodies, including tablets

2003-09-16

2008-09-30

Chen, Bret (Department: 1792)

Coating processes

Spraying

Moving the base

C427S425000, C427S427000, C118S300000, C118S313000

Reexamination Certificate

active

07429407

ABSTRACT:
A 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 the bodies with the spray of coating fluid in the coating zone; wherein, before contacting the bodies with the spray, providing the bodies with a spinning movement by a central impact of gas jets directed upward to intersect the centerline of the spray; guiding the spinning bodies by the 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, the bodies are pneumatically transported in the coating zone in a non-fluidized state.

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