Elongated cylindrical medicinal tablet having two layers

Details Elongated cylindrical medicinal tablet having two layers Elongated cylindrical medicinal tablet having two layers

1992-11-19

1995-10-24

Bawa, Raj

Drug, bio-affecting and body treating compositions

Preparations characterized by special physical form

Tablets, lozenges, or pills

424474, 264113, 264120, 425345, 425353, A61K 920

Patent

active

054608279

ABSTRACT:
An apparatus for forming a generally cylindrical two-layer, vertically-compressed tablet having a longitudinal axis longer than its diameter is provided in which a generally cylindrical die cavity is provided on a die table with the longitudinal axis of the die cavity being vertically disposed. An upper punch provided above the die cavity rides on an upper cam assembly which controls the movement of the upper punch to and from the die cavity. A lower punch provided below the die cavity rides on a lower cam assembly which raises and lowers the lower punch relative to the die cavity. In operation, the lower punch is positioned and a first powder is added in a metered amount to the die cavity. The upper punch then tamps down the first powder within the die cavity. The lower punch is positioned to receive a metered amount of a second powder in the die cavity above the first powder. The powder in the die cavity is compressed by shifting pressure wheels which prevent the powders from adhering to the wall of the die cavity. After the powder is compressed to form a tablet, the tablet is ejected from die cavity and taken out an ejection chute.

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"Hata Rotary Tabletting Presses For The Pharmaceutical Industry" published by Elizabeth-Hata International, Inc.

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