This closing device with a long frame was developed for combination with vertical or horizontal tubular bag machines. The device's continuous mode of operation requires that both systems operate in synchrony with each other. Synchronisation with the upstream packaging machine can be performed mechanically using a chain or cardan shaft drive and using an electronic shaft. At an angle of inclination of 20°, 30° or optionally 45° and 60 degrees, the bags are discharged via a transversely positioned product conveyor belt. An integrated vacuum device in the closing station sucks the excess air out of the bags to be closed,guaranteeing optimally tight packaging. The product bags are then closed in the closing station and discharged.