Importance

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Abstract

Double cartridges for two-component compounds manufactured in one piece by injection molding have separate reservoir cylinders. Discharge channels starting from each cylinder space are separated in a common orifice by two wall sections which start from separate cylinder walls and are brought in duplicate up to the channel end; in addition, the channels receive a separate closure inserted axially from the outside. The one-piece connection at the orifice occurs either by an end-face web between the wall sections or through circumferential sections of an orifice ring embracing the channels. As a result, the diffusion paths in the plastic material of the cartridge are extremely long. Yet the advantages of the one-piece double cartridge with respect to manufacture and handling are preserved. A variant with longitudinally bored closure remaining in the orifice is described, which forms together with a rotatable slide element a seal intended for opening and closing.

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First Claim