Patent ID: 6877672

Claim:
Method for discharging a medium mixture mixed from a first and a second medium ( 36 , 37 ) through a discharge opening ( 15 ) of a dispenser ( 11 ) having a first chamber ( 16 ) containing the first medium ( 36 ); a second chamber ( 19 , 19 a ) containing the second medium ( 37 ), said second chamber having a discharge closure element ( 22 ) for the second chamber, connected to the discharge opening ( 15 ); a media connecting path between the chambers, said path being initially closed; and at least one overflow closure element ( 41 ) for the media connecting path, wherein after opening the overflow connecting element the first medium ( 36 ) is caused to flow into the second chamber ( 19 , 19 a ), thereby mixing the first and second medium to create a pressurized media mixture and as a result of the media pressure of the media mixture in the second chamber ( 19 ), opening the discharge closure element ( 22 ), the discharge closure element ( 22 ) including a material weakening ( 42 ), including a predetermined breaking point, a reduced material thickness and a laser perforation in a wall of the second chamber ( 19 ), the material weakening being initiated by piercing the wall by means of an impact spike ( 29 ).