A device for displaying images having variable colors comprises a substrate; a light-transmissive coloring layer painted or laminated on the substrate, the coloring layer comprising colorants of different colors and having a rear side in contact with the substrate and a varnished front side; a display layer comprising a silvering material directly plated on the varnished front side of the coloring layer, the display layer comprising a display pattern forming a visible displayed image, the silvering material comprising a metal, a metalloid, or an oxide thereof to form a one-way-mirror; an illuminator configured and positioned to illuminate the coloring layer from the rear side of the coloring layer. When the coloring layer is unilluminated by the illuminator, the unilluminated coloring layer is hidden behind the one-way-mirror. When the coloring layer is illuminated by the illuminator, the illuminated coloring layer visibly colorizes the displayed image through the one-way-mirror.

The invention relates to a method for the automated decoration of a building board, comprising at least one smoothing compound layer and preferably at least one colour coat. The method comprises the steps of smoothing and decorating the building board, wherein the smoothing includes the steps of (i) calibrating the building board to a nominal thickness, so that a surface of the building board has a height difference of at most 1 mm, (ii) applying a layer of a smoothing compound, (iii) pressing the smoothing compound into the surface structures of the building board, and (iv) recalibrating to the nominal thickness. Preferably, a plurality of smoothing compound layers are pressed into a calibrated surface of the building board and partially ground away again. The method is particularly well suited for the production of fire-resisting building boards.

A building panel with a surface layer (1) including a wood veneer, a wood fibre based core (2) and a sub-layer (3) between the surface layer (1) and the core (2). The sub-layer (3) includes wood fibres (4) and a binder (5). The surface layer (1) has surface portions (6) including material from the sub-layer (3). The surface portions (6) including material from the sub-layer (3) extend into the wood veneer.

The appearance of natural rock faces are formed on planar panels or part portions disposed horizontally by stamping or texturizing a cementatious mixture of veneer material and then selectively applying colorant matter, which may include combinations of stains and mineral.

Process for the realization of manufactured articles in stone material, characterized by comprising the following steps of: providing a block or flat sheet of said stone material, and gluing a support in a flexible material on a surface of said sheet, carrying out the cutting or sectioning of said sheet to obtain a laminated panel with a determined minimum thickness, carrying out the winding of the mentioned laminated panel on a roll or similar curved surface to obtain the crushing of said panel into irregular chunks or parts; carrying out the impregnation or spreading on said crushed panel with polymeric materials or thermosetting resins; recomposing the planarity of said impregnated panel thus obtained.

A method for producing a decorated mineral composite body, a decorated mineral composite body and the use of a multilayer film for producing a decorated mineral composite body.

A method for manufacturing slabs made of stone or stone-like agglomerate material and having decorations and/or chromatic effects, including steps of machining at least one surface of the slab by means of sizing and/or polishing, applying a dispersed ink containing pigments on the at least one machined surface, drying the dispersed ink, penetration, by means of diffusion, of the pigments of the dispersed ink into the slab following a change in state of the pigments, to realize the decorations and/or the chromatic effects, cooling the slab, removing the excess or residual dispersed ink from the at least one surface of the slab, and applying a layer of functional compound on the at least one surface of the slab. Also relating to a slab of stone or stone-like agglomerate material including at least one surface with decorations and/or chromatic effects and a working intermediate for manufacture thereof.

A device for displaying images having variable colors comprises a substrate; a light-transmissive coloring layer painted or laminated on the substrate, the coloring layer comprising colorants of different colors and having a rear side in contact with the substrate and a varnished front side; a display layer comprising a silvering material directly plated on the varnished front side of the coloring layer, the display layer comprising a display pattern forming a visible displayed image, the silvering material comprising a metal, a metalloid, or an oxide thereof to form a one-way-mirror; an illuminator configured and positioned to illuminate the coloring layer from the rear side of the coloring layer. When the coloring layer is unilluminated by the illuminator, the unilluminated coloring layer is hidden behind the one-way-mirror. When the coloring layer is illuminated by the illuminator, the illuminated coloring layer visibly colorizes the displayed image through the one-way-mirror.

A device for displaying images having variable colors comprises a substrate; a light-transmissive coloring layer painted or laminated on the substrate, the coloring layer comprising colorants of different colors and having a rear side in contact with the substrate and a varnished front side; a display layer comprising a silvering material directly plated on the varnished front side of the coloring layer, the display layer comprising a display pattern forming a visible displayed image, the silvering material comprising a metal, a metalloid, or an oxide thereof to form a one-way-mirror; an illuminator configured and positioned to illuminate the coloring layer from the rear side of the coloring layer. When the coloring layer is unilluminated by the illuminator, the unilluminated coloring layer is hidden behind the one-way-mirror. When the coloring layer is illuminated by the illuminator, the illuminated coloring layer visibly colorizes the displayed image through the one-way-mirror.

A building panel with a surface layer including a wood veneer, a wood fibre based core and a sub-layer between the surface layer and the core. The sub-layer includes wood fibres and a binder. The surface layer has surface portions including material from the sub-layer. The surface portions including material from the sub-layer extend into the wood veneer.