Vertical tubular bagging machine and a method for operating a tubular bagging machine

In a vertical tubular bagging machine, comprising a foil strip pulled off from a storage roller by means of a foil remover, a forming shoulder for forming the foil strip into a foil tube, a dosing device releasing product into the foil tube, a fill pipe, a longitudinal sealing device creating a longitudinal seam in the foil tube, cross-sealing jaws for welding across the foil tube creating bags, and a separating device for separating the foil tube into individual bags, the improvement comprising a scale being positioned below and receiving thereon an end of the foil tube, when the scale receives the end of the foil tube, a remaining portion of foil tube does not apply any mechanical stress to the end of the foil tube, the scale producing a measured value, a measured value signal-carrying line connecting the scale to the dosing device and providing the dosing device with the measured value from the scale, the scale having a flap mechanism movable between closed and open positions for respectively selectively receiving and removing the end of the foil tube on and from the scale, the flap mechanism being in the closed position to hold a product receiving end of the foil tube thereon, and the flap mechanism being in the open position to remove a properly filled one of the bags previously resting thereon during reception of product in the foil tube and after separating the bag from the foil tube by the separating device.