Horizontal forming device

A horizontal forming device, in particular for horizontal flow pack machines, comprises at least one, in particular roller-free, forming unit, in particular a forming shoulder, and comprises at least one support unit, which are configured for forming a packaging material web into a packaging material tube, wherein the forming unit and the support unit together delimit a guiding gap which the packaging material web can be guided through, the horizontal forming device further comprising at least one compensation unit, which is configured to movably support the forming unit and/or the support unit in such a way that, at least during a forming of the packaging material tube, the forming unit and the support unit are movable relative to each other, in particular in order to enable a compensation movement of the forming unit and/or the support unit relative to each other during a forming of the packaging material tube.