Fraunhofer-gesellschaft Zur Foerderung Der Angewandten Forschung E.v.

Helmut Bauer

Dietmar Muller

Harald Franken

Harry Seiter

For producing propellant charge granular material several small diameter pellant charge strands are continuously extruded, individually placed on a support behind the extruder and conveyed over a setting zone. The strands are subsequently supplied on a sloping zone to a cutting plate with a number of guide holes corresponding to the number of strands. On passing out of the guide holes the strands are cut to the desired length by cutting blades rotating being the cutting plate.

Process and apparatus for producing propellant charge granular material

An apparatus for extruding plastic materials, particularly plastic explosives or propellants, has a casing, at least one pressing member moving therein, e.g. a rotating extruder screw and a shaping retainer plate terminating the casing at the outlet side, which is fixed to the casing and can be raised therefrom if an excessive overpressure occurs. So as to ensure rapid raising and a rapid release of the overpressure when a safety hazard occurs, the retainer plate is fixed to the casing by a mechanical or a gas pressure spring, whose spring tension is adjustable. It is also possible to provide a hydraulic pressure directed in opposition to the spring and by which the retainer plate can be raised in random manner from the casing.

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Malgersdorf, Germany

Helmut Bauer