Two-component cartridge for free-flowing media
AssigneeFischbach KG Kunststoff-Technik
InventorAchim Helmenstein
Life of this patent
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Abstract
The two-component cartridge comprises an outer container (10) and an inner container (20) coaxially arranged therein. The inner container (20) comprises a bellows-type section (21) adapted to be folded like an accordion. The rear end of the bellows-type section (21) is inserted into a piston (32). In the folded condition, the bellows-type section is accommodated in an annular space (41) of the piston (32). The piston (32) comprises an annular piston breast (34) and a central piston breast (37) arranged at the same level. The invention allows easy filling of the two-component cartridge from the rear side and almost complete evacuation. The two-component cartridge can be evacuated by means of the same tool as is used for a common cartridge containing only a single material.
Claims17
Two-component cartridge for flowable media comprising a tubular outer container (10) having a front end (12) and an open rear end (17), said front end (12) having an outer outlet channel (14), an inner container (20) coaxially arranged in the outer container (10) and being adapted to be axially folded, said inner container (20) including a front end (22) having an inner outlet channel (24), a piston (32) displaceably arranged in the outer container (10) and being adapted to receive the folded inner container (20), the inner container (20) including at a rear end thereof a closed filling opening (52), the piston (32) including a central breast (37) formed at a projection (39) which extends into the inner container (20), the piston (32) includes two piston portions (33,36), said piston portions (33, 36) being provided with a respective annular piston breast (34, 48), and each piston portion (33,36) at its respective annular piston breast (34, 38) has a piston edge (35,38) supported on the wall of the outer container (10).
Dependencies are inferred from the claim text.