Pyrotechnisches Gehäuse

摘要

The pyrotechnic casing is formed by two or more part-casings (2, 3) of pressed cardboard which may be coupled, in opposition, via their respective edges, in order to form, together with their charge, a pyrotechnic device or firework. Each half-casing has, at its opening, a rigid ring (5) of plastic material which has a peripheral groove (6) in order to permit close attachment with a conjugate recess means (6') provided at the opening (4) of the opposed half-casing. The attachment is reinforced by projecting extensions (8) of the ring, which are adhered to the inner wall of the half-casing.