| 摘要 |
During the production of monobasic propellant powders using alcohol and ether as solvents, the danger exists that bubbles of ether may be formed in the propellant powder material. This may appreciably impair the quality of the propellant powder. The invention proposes that the propellant powder material be cooled before leaving the extrusion machine. To this end, the extruder head (4) is provided with a cooling device. The invention is particularly useful in the production of monobasic propellant powders using alcohol and ether as solvents. |
