Outlet connector piece having a protruding flange

1. An outlet connector piece ( 1 ) having a protruding flange ( 3 ) for non-detachably securing said outlet connector piece ( 1 ) on a tubular bag ( 12 ), wherein, the outlet connector piece ( 1 ) is configured to receive a screwable disposable metering pump ( 8 ) having a cutting device ( 11 ) for the tubular bag ( 12 ), wherein the flange ( 3 ) has a contact surface ( 4 ) which is configured for a welding or adhesive connection to the tubular bag ( 12 ) and surrounds an outlet connector piece passage ( 5 ) along a circumference ( 6 ) of the outlet connector piece passage ( 5 ), characterized in that the flange ( 3 ) has a film hinge ( 7 ) on each opposing side of the outlet connector piece passage ( 5 ), the film hinges ( 7 ) extending parallel to each other in a direction of extension and being arranged closer to the circumference ( 6 ) than an outer edge of the contact surface ( 4 ).

2. A bag assembly including the tubular bag ( 12 ) and the outlet connector piece ( 1 ) according to claim 1 , characterized in that the contact surface ( 4 ) projects beyond the circumference ( 6 ) on all sides by at least a radius of the circumference ( 6 ).

3. A bag assembly including the tubular bag ( 12 ) and the outlet connector piece according to claim 1 , characterized in that edge regions of the contact surface ( 4 ) are configured to be folded by a hinge angle greater than 90° to the tubular bag ( 12 ) due to a hinge effect of the film hinges ( 7 ).