Plastic and nonmetallic article shaping or treating: processes – Explosive or propellant article shaping or treating – Rolling to form sheet or rod
Patent
1984-10-10
1986-08-26
Nelson, Peter A.
Plastic and nonmetallic article shaping or treating: processes
Explosive or propellant article shaping or treating
Rolling to form sheet or rod
264 35, 264 36, C06B 2100
Patent
active
046082107
ABSTRACT:
A method for manufacturing plastically bonded propulsive powders and explves by means of an extruder which comprises a housing with at least one entry opening, under certain conditions a solvent supplementing opening, two co- or counterrotating screw shafts and a forming head. The method makes possible continuous production with minimal binder components of 4-6 percent. Firstly, the plastic binder in a fixed, soluble or suspended form is added by means of an entry opening for a period of time until the screws float in the plastic binder without opposing friction and without friction with the walls. The components of the propulsive powder, or correspondingly the explosive material in crystalline form, are added in steadily increasing proportions with a simultaneous reduction of the portion of the plastic binder and finally, the mixture ratio is held constant.
REFERENCES:
patent: 4120920 (1978-10-01), Cougoul et al.
patent: 4405534 (1983-09-01), Deisenroth
patent: 4491489 (1985-01-01), Ellis et al.
Muller Dietmar
Schubert Hiltmar
Fraunhofer Gesellschaft zur Forderung der angewandten Forschung
Nelson Peter A.
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