Warner-lambert Company

Jean-Philippe Mayer

Fritz Wittwer

Single piece capsules, produced, filled and sealed in a single operation, also known as soft shell capsules, having a special foam wall structure, obtained by a microdispersion of a gas in an aqueous mixture of dry gelatin and one or more plasticizers. The capsules are formed by processing, on soft shell capsule manufacturing machines, foamed ribbons, cast from a film forming mixture obtained by a microdispersion of a gas in an aqueous mixture of gelatin and one or more plasticizers; optionally with the inclusion of a coloring agent, an opacifying agent, a foam stabilizer, a gelatin extender, a preservative, a flavoring agent, a sweetening agent, or a drug. By a suitable choice of the gas proportion in the capsule wall and its microdispersion level, it is possible, within certain limits, to control the capsule wall disintegration speed and its opacity. Also, the inclusion of gas bubbles in the capsule wall decreases the gelatin material required for foam soft gelatin capsules and provides energy saving during production due to a faster drying of the capsule wall, thereby achieving lower costs for the production of said foam soft gelatin capsules over conventional soft gelatin capsules.

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Colmar, France

Jean-Philippe Mayer