Method and apparatus to prepare monobasic propellant charge powders with alcohol and ether as solvents
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United States of America Patent
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Oct 12, 1993
Issued Date -
N/A
app pub date -
Nov 30, 1992
filing date -
Apr 25, 1989
priority date (Note) -
Expired
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Abstract
In the production of monobasic propellant charge powders with alcohol and ether as solvents there is the risk of ether bubbles forming in the propellant charge powder material, and those bubbles greatly reduce the quality of the propellant charge powder. The invention provides for cooling the propellant charge powder material prior to its leaving the extruder. To accomplish that, the extruder head (4) is provided with a cooling means. The invention is especially well suited for use in the preparation of monobasic propellant charge powders with alcohol and ether as solvents.
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