초록 ▼

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). I

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.

대표청구항 ▼

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). I

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. rding to claim 1 wherein the piston portions (33, 36) are separate elements, one of said piston portions (33, 36) includes the central piston breast (37) housed in said inner container (20), and one of said piston portions (33, 36) includes a supporting surface (50) for supporting and advancing the other of said piston portions (33, 36). 14. Two-component cartridge according to claim 13 wherein the projection (39) together with at least one of a recess (40) of the piston (32) and a constricted portion of the outer container (10) form an annular space (41) which receives the folded inner container (20) when the piston is in the advanced position. 15. Two-component cartridge according to claim 14 wherein the piston (32) includes-behind the annular space (41) a sealing insertion zone (42) for the wall of the inner container (20). 16. Two-component cartridge according to claim 13 wherein the outlet channel (24) of the inner container (20) includes circumferential ribs (26) on the outside which squeeze into longitudinal webs (27) in the outlet channel (14) of the outer container (10) and effect axial protection of the inner container (20). 17. Two-component cartridge according to claim 13 wherein the outer container (10) is at least partly made of translucent material and is provided with a scale indicating the respective state of evacuation on the basis of piston position.