Method and apparatus for forming soft gelatin capsules containing particulate material
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United States of America Patent
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Apr 21, 1998
Grant Date -
N/A
app pub date -
May 20, 1996
filing date -
Dec 20, 1993
priority date (Note) -
Expired
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Abstract
Rotary die apparatus for producing filled gelatin capsules comprises two cylindrical rollers mounted with their longitudinal axes substantially parallel and defining a nip therebetween, with at least one roller having a plurality of recesses on its outer surface; and means for feeding gelatin ribbon to each roller surface and thereby to the nip. The apparatus includes a metering system for delivering particulate material between gelatin ribbons at the nip; and means for rotating the rollers in synchronism with the metering system such that particulate material is supplied over a recess in said at least one roller, and the juxtaposed ribbon sections close over the particulate material to form a capsule. Air mechanisms may be used to shape the gelatin ribbon into the roller recesses, and such mechanisms can also be used to facilitate the flow of particulate material in the metering system.
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