Abstract: The invention relates to a method for processing a side edge of a panel (2), in particular a floor panel, with a top (18) and a bottom (19), which on at least two side edges lying opposite one another has profiles corresponding to one another such that two identically embodied panels (2) can be joined and locked to one another in the horizontal and vertical direction by an essentially vertical joining movement, wherein the locking in the vertical direction can be produced by at least one tongue element formed in one piece from the core and moveable in the horizontal direction, which tongue element during the joining movement snaps in behind a locking edge extending essentially in the horizontal direction and the tongue element is exposed by means of at least one essentially vertical slot with respect to the core, and at least one of the slots is not embodied in a continuous manner over the entire length of the side edge, wherein the at least one non-continuous slot is produced by at least one guided tool (41)

Abstract: The invention relates to a method for processing a side edge of a panel (2), in particular a floor panel, with a top (18) and a bottom (19), which on at least two side edges lying opposite one another has profiles corresponding to one another such that two identically embodied panels (2) can be joined and locked to one another in the horizontal and vertical direction by an essentially vertical joining movement, wherein the locking in the vertical direction can be produced by at least one tongue element formed in one piece from the core and moveable in the horizontal direction, which tongue element during the joining movement snaps in behind a locking edge extending essentially in the horizontal direction and the tongue element is exposed by means of at least one essentially vertical slot with respect to the core, and at least one of the slots is not embodied in a continuous manner over the entire length of the side edge, wherein the at least one non-continuous slot is produced by at least one guided tool (41)

Abstract: A device for locking two building boards comprises a tongue element inserted into a groove a first building board. The tongue element comprises a spring having a plurality of wave arches. A groove is provided in a core of a second building board and corresponds to the groove of the first building board, such that when the groove of the first and second building boards overlap during a connection of the first and second building boards, by a vertical lowering movement, the first and second building boards are locked in a direction parallel to the visible side by the tongue element.

Abstract: A device for locking two building boards comprises a tongue element inserted into a groove a first building board. The tongue element comprises a spring having a plurality of wave arches. A groove is provided in a core of a second building board and corresponds to the groove of the first building board, such that when the groove of the first and second building boards overlap during a connection of the first and second building boards, by a vertical lowering movement, the first and second building boards are locked in a direction parallel to the visible side by the tongue element.