Abstract: The invention relates to methods for manufacturing lightweight building boards (1) starting from a workpiece (2) which comprises two thin-walled cover layers (4, 6) and at least one core layer (8) which is disposed between the cover layers (4, 6) and is made of a light filling material, the at least one core layer (8) possessing cavities and having a lower average density than the cover layers. The method comprises the following steps: forming in the workpiece (2) at least one groove (10) which extends through at least one first cover layer (4) and at least partly through the at least one core layer (8) and circumscribes at least a portion of a contour of the lightweight building board (1) to be manufactured; introducing a hardenable mass (12) into the at least one groove (10); at least partly hardening the hardenable mass (12); and making a separating cut along the at least one groove (10), so the at least partly hardened mass (12) is separated in the longitudinal direction of the groove.

Abstract: The invention relates to a process for sticking edging material (12, 10) onto lightweight building boards (1) comprising two thin-walled outer layers (2, 4) and a core layer (6) of lightweight filler material disposed between the outer layers, having the steps: provision of a lightweight building board (1), a decor edge (10) and a stabilising edge (12), and sticking on of the decor edge (10) and/or the stabilising edge (12) in the region of a narrow surface (1?) of the lightweight building board (1). The process according to the invention is characterised in that the stabilising edge (12) is introduced into a section between two outer layers (2, 4) in the region of the narrow surface (1?) without having first created a recess of at least one outer layer and/or of the core layer in this section, said recess corresponding substantially to the stabilising edge.

Abstract: The invention relates to a process for sticking edging material (10, 12) onto lightweight building boards (1) comprising two thin-walled outer layers (2, 4) and a core layer (6) of lightweight filler material disposed between the outer layers (2, 4), having the steps: provision of a lightweight building board (1), a decor edge (10) and a stabilizing edge (12), and sticking on of the decor edge (10) and/or the stabilizing edge (12) in the region of a narrow surface (1?) of the lightweight building board (1). The process according to the invention is characterized in that at least the stabilizing edge (12) comprises a synthetic fibre material, preferably a cellulose-based fibre material, particularly paperboard material.