Abstract: A method for the manufacture of a foldable building plate element by providing a flat plate (1), providing of at least one folding groove (2) in the flat plate, providing a folding profile (6), comprising two side wings (7) and an interposed folding portion (8), and fitting the folding groove into the folding profile in such a way, for example by gluing, that the side wings thereof form a strong connection with the two side faces (5) of the folding groove. The side wings are interconnected with each other through a bridging strip (9), which will be removed when the plate is folded. The wings are further provided with connecting means (10) that snap-connect with each other when the side wings are folded towards each other. If desired, a filler strip (11) can be inserted between the side wings.

Abstract: A method for the manufacture of a foldable building plate element by providing a flat plate (1), providing of at least one folding groove (2) in the flat plate, providing a folding profile (6), comprising two side wings (7) and an interposed folding portion (8), and fitting the folding groove into the folding profile in such a way, for example by gluing, that the side wings thereof form a strong connection with the two side faces (5) of the folding groove. The side wings are interconnected with each other through a bridging strip (9), which will be removed when the plate is folded. The wings are further provided with connecting means (10) that snap-connect with each other when the side wings are folded towards each other. If desired, a filler strip (11) can be inserted between the side wings.