Abstract: A method assess the quality of varnished wood surfaces. The method includes the following steps: a) creating a brightness map of the surface, b) creating a curvature map of the surface, c) ascertaining a cross-correlation of brightness map and curvature map, and d) evaluating the result of the cross-correlation to ascertain the proportion of the irregularities of the surface to be attributed to varnish flaws.

Abstract: A method refurbishes structured surfaces of a component having a damaged subregion with material detachment. The method comprising: determining a reference region having a similar surface structure as the subregion; while pressing a die material onto the reference region: curing the die material to form a transparent die which is separable from the reference region without leaving residues and has a negative shape of the surface structure of the reference region; filling the damage location with electromagnetic irradiation curable material; placing the die onto the curable material in the damage location with an alignment of the negative shape of the transparent die corresponding to a desired surface structure at the damage location; while the die is being pressed onto the damage location: irradiating the curable material with electromagnetic irradiation through the transparent die until the material is cured; and removing the die from the cured material without leaving residues.

Abstract: A method conceals optical defects in surfaces. The method includes: obtaining a digital image by a digital optical recording the optical defect and a surrounding surface; obtaining an imitation of the surface in a region of the at least one optical defect by image processing of the digital image; printing a mirror-inverted, true-to-scale representation of the surface imitation onto a transfer film; soaking the transfer film; applying an activator onto a the transfer film or onto the surface; aligning the transfer film onto the surface so that the surface imitation on the transfer film coincides with the optical defect on the surface; pressing the transfer film onto the surface; peeling the transfer film from the surface; pressing on the ink remaining on the surface; and after complete drying of the activator and of the ink: applying a protective layer onto the surface imitation.

Abstract: A sandwich structure includes two cover layers and a core arranged therebetween, and at least one connecting element for connection to further components. The connecting element has an insert, which is embedded into the sandwich structure at a cover layer of the two cover layers. An embedding depth of the insert is less than a thickness of the core. The connecting element is finished flush with an outer side of the cover layer via which the connecting element is embedded or protrudes from the cover layer.

Abstract: A sandwich structure includes two cover layers and a core arranged therebetween, and at least one connecting element for connection to further components. The connecting element has an insert, which is embedded into the sandwich structure at a cover layer of the two cover layers. An embedding depth of the insert is less than a thickness of the core. The connecting element is finished flush with an outer side of the cover layer via which the connecting element is embedded or protrudes from the cover layer.

Abstract: The invention relates to an edge material for panels, the edge material being constructed from a plurality of bonded layers. The edge material comprises a first layer, which is non-metallic, and a core layer, which is made of at least one metal layer. The edge material also comprises a second layer, which is non-metallic. Furthermore, the invention relates to a corresponding sandwich panel and to a corresponding cover layer for panels.

Abstract: The invention relates to an edge material for panels, the edge material being constructed from a plurality of bonded layers. The edge material comprises a first layer, which is non-metallic, and a core layer, which is made of at least one metal layer. The edge material also comprises a second layer, which is non-metallic. Furthermore, the invention relates to a corresponding sandwich panel and to a corresponding cover layer for panels.