Plastic and nonmetallic article shaping or treating: processes – Spheroidizing or rounding of solid particles
Patent
1979-10-31
1981-07-28
Czaja, Donald E.
Plastic and nonmetallic article shaping or treating: processes
Spheroidizing or rounding of solid particles
264141, B22D 1101
Patent
active
042809711
ABSTRACT:
Pancreatin pellets are produced by a process employing extrusion techniques. In the process, a mixture of pancreatin powder and selected solvent is formed into a pliable mass suitable for extrusion. The extrusion is conducted followed by a cutting, shaping or forming of the extruded mass into pre-pellet like forms. Further drying and mechanical working of the pre-pellet forms results in the final pancreatin pellet of improved pharmaceutical and mechanical stability. A special aspect of the process is the selection of a solvent for mixing with pancreatin powder that is harmless to enzymes. Such solvents typically include isopropanol and acetone.
REFERENCES:
patent: Re27214 (1971-11-01), Nakahara
patent: 3154603 (1964-10-01), Witheford et al.
patent: 3758679 (1973-09-01), Seidler
Feicho Lutz
Fischer Gerhard
Peschke Guenter
Wischniewski Martin
Czaja Donald E.
Hall James R.
Kali-Chemie Pharma GmbH
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