Continuous preparation of solid pharmaceutical forms
First Claim
1. A process for tabletting a mixture ofone or more pharmaceutical active compounds,one or more pharmacologically acceptable thermoplastic polymers, said polymers having a Fikentscher K value of from 10 to 100, andoptional pharmaceutical auxiliaries,said mixture having a glass transition temperature below the decomposition temperature of all components of said mixturewherein said mixture is heated, without thermal and/or oxidative degradation, at a temperature of from 50°
- to 180°
to render the mixture extrudable and said heated mixture is extruded at from 50°
to 180° and
the still formable extrudate is pressed between two belts or a belt and a roller to give tablets, said two belts or said belt and a roller making contact in parts, rotating in opposite directions and running parallel along a contact zone, at least one of said two belts or at least one of said belt and a roller having shape-imparting indentations.
1 Assignment
0 Petitions
Accused Products
Abstract
A mixture of one or more pharmaceutical active compounds and one or more thermoplastic polymers is tabletted by a process in which the mixture is extruded and the still moldable extrudate is pressed to give tablets, between two belts, or a belt and a roller, which make contact in parts, rotate in opposite directions and run parallel along the contact zone, the shape-imparting indentations, which may be present in complementary pairs, being located in both or in only one of the revolving shape-imparting elements.
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Citations
20 Claims
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1. A process for tabletting a mixture of
one or more pharmaceutical active compounds, one or more pharmacologically acceptable thermoplastic polymers, said polymers having a Fikentscher K value of from 10 to 100, and optional pharmaceutical auxiliaries, said mixture having a glass transition temperature below the decomposition temperature of all components of said mixture wherein said mixture is heated, without thermal and/or oxidative degradation, at a temperature of from 50° - to 180°
to render the mixture extrudable and said heated mixture is extruded at from 50°
to 180° and
the still formable extrudate is pressed between two belts or a belt and a roller to give tablets, said two belts or said belt and a roller making contact in parts, rotating in opposite directions and running parallel along a contact zone, at least one of said two belts or at least one of said belt and a roller having shape-imparting indentations. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
- to 180°
Specification