A apparatus for creating corrugated cardboard (20) in particular on the site of a system for automatically forming packaging boxes, said corrugated cardboard having at least one corrugated layer (10) between two flat layers (12, 18), the apparatus comprising - a joining station (16) for attaching a second flat layer (18) to a corrugated layer (10) provided on a first flat layer (12), - means for supplying said corrugated layer (10) with the first flat layer (12) attached thereto to said joining station (16) and - means for supplying said second flat layer (18) to said joining station, characterized in further comprising - means for removing a protective layer (28) from the corrugated layer (10) and/or the second flat layer (18), said protective layer (28) protecting an adhesive substance provided on the corrugated layer (10) or the second flat layer (18).