Abstract: A method for the production of a core material (1) composed of strips (2) of preferably fibrous material for a sandwich panel, in which sandwich panel the width direction (7) of the strips (2) is coincident with the thickness direction of the panel and a cover layer (8, 9) is attached to each of the longitudinal edges of the strips (5, 6), comprises cutting each strip (2) from an even number of layers with the formation of, in each case, a longitudinal edge (5, 6) having a cut surface (11) which, viewed in cross section of the strip (2), runs at an incline between the two surfaces (15, 16) of the strip (2).

Abstract: A method for producing a panel, for example a door panel, which comprises two sheets, at least one of which is provided with a relief, between which sheets a core of strips running transversely to said sheets is located, said method comprising the gluing of each sheet to the strip edges opposite, the core being compressed in order to pre-form depressions in which the relief of the sheet opposite can be accommodated and said sheet then being glued, at least to those parts of the core not provided with depressions.