Foam capsules

Details Foam capsules Foam capsules

1983-04-13

1985-02-19

Morris, Theodore

Compositions: coating or plastic

Coating or plastic compositions

Pore forming

106127, 106128, 106129, 106135, 106138, 206 05, 264 50, 264301, 264305, 424 15, C08L 8900, A01N 2534, B28B 138

Patent

active

045003580

ABSTRACT:
Foam capsules with telescopically engaged body and cap portions, also known as hard shell capsules, having a special wall structure, obtained by a microdispersion of a gas in a gelatin solution.
The capsule body and cap portions are formed by dipmolding the film-forming mixture obtained by a microdispersion of the gas in a gelatin solution; optionally with the inclusion of a plasticizer and/or coloring agent, and/or flavoring agent, and/or foam stabilizer, and/or gelatin extender.
By a suitable choice of the gas proportion in the capsule wall and its micronization level, it is possible, within certain limits, to control the capsule wall disintegration speed and its opacity. In addition, inclusion of gas bubbles into the capsule wall lowers the gelatin content for a foam capsule and provides energy saving during the process due to a faster drying of the wall, thereby providing lower cost prices for the production of pharmaceutically acceptable capsules.

REFERENCES:
patent: 3317433 (1967-05-01), Eichel
patent: 4026986 (1977-05-01), Christen et al.
patent: 4138013 (1979-02-01), Okajima
patent: 4331547 (1982-05-01), Stotts et al.

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