SUBSEQUENT ALTERING OF A DECORATIVE SURFACE

Abstract

The invention relates to a method for subsequently altering a decorative surface that is ready for use, including the following steps: providing a material panel with a decorative layer which is ready for use and has a first coloured. decoration and a protective layer with a structured surface. According to the invention, in order to provide a method for subsequently altering a decorative surface that is ready for use, with which the structures can be optically highlighted, without interfering with the mechanical or structural integrity of the decorative surface, a second coloured decoration is applied to the protective layer and unevenly distributed.

Claims

1. A method for subsequently altering a decorative surface that is ready for use, comprising the following steps: providing a material board with a decorative layer which is ready for use and comprises a first coloured decoration and a protective layer with a structured surface, wherein a second coloured decoration is applied to the protective layer and unevenly distributed.

2. The method according to claim 1, wherein the structured surface has elevations and cavities and the second coloured decoration is arranged in the region of the elevations and/or the cavities.

3. The method according to claim 1, wherein a larger quantity of the particles producing the second coloured decoration is arranged in the region of the elevations and/or in the region of the cavities compared to a central plane.

4. The method according to claim 1, wherein, for the second coloured decoration, colour particles in powder form are applied to the structured surface and surplus colour particles are then removed.

5. The method according to claim 1, wherein the colour particles are brushed off.

6. The method according to claim 1, wherein the colour particles are brushed off in one direction.

7. The method according to claim 1, wherein a fixing layer is arranged on the powdery colour particles.

8. The method according to claim 1, wherein a pigmented liquid surface coating is applied to the structured surface for the second coloured decoration.

9. The method according to claim 1, wherein the pigmented lacquer is applied by means of an applicator roller.

10. The method according to claim 1, wherein the structured surface comprises sections having high and low roughness and the second coloured decoration is unevenly distributed in such a way that a larger quantity of colour pigments is arranged at sections having higher roughness than at sections having, by way of contrast, lower roughness.

11. The method according to claim 1, wherein the structured surface has sections with different gloss levels, wherein the second coloured decoration is applied in a larger quantity at sections having a lower gloss level than at sections which have, by way of contrast, a higher gloss level.

12. The method according to claim 1, wherein particles made of graphite or carbon, ferromagnetic particles, iriodin or kaolin or mixtures of two or more of the aforementioned particles are used as powdery particles or as particles in a liquid surface coating.

13. A material board comprising a panel which is ready for use, having a decorative layer which has a first coloured decoration and a protective layer with a structured surface, an unevenly distributed, second coloured decoration is arranged on the protective layer.

Description

DETAILED DESCRIPTION

[0053] The invention is explained in greater detail below with reference to exemplary embodiments.

EXAMPLE 1

[0054] In order to subsequently alter a decorative surface, a material board with a decorative layer which is ready for use is first provided. The material board has a base plate, here a wood material board which is configured as a fibreboard. An MDF board, HDF board or CDF board is in particular used as the fibreboard. Alternatively, a chipboard, a fibre cement board, a glass-fibre reinforced plastic board or solid core can also be used as the base plate.

[0055] A DPL decorative layer is arranged on the base plate. This has been compressed with the base plate under the action of pressure and heat in a press. In addition to various base papers, the DPL decorative layer also has a first coloured decoration which in this case shows a wood decoration. A synthetic resin-impregnated overlay is arranged on the first coloured decoration as a protective layer. During the pressing of the DPL decorative layer with the base plate, a 3D structure has been impressed into the protective layer by means of an embossing device. In addition, glossy pores have been produced on the protective layer, i.e. on the surface of the DPL during the pressing. These are in particular arranged in the region of the elevations of the 3D structure. The decorative surface produced is ready for use.

[0056] In order to alter the visual effect, in particular in order to highlight the impressed structures, colour particles, here graphite particles in powder form, are applied to the structured surface of the protective layer. The graphite particles are then partially removed from the surface, in this case brushed off with a round brush. The rotating round brush is guided over the material board in one direction of movement. Different quantities of graphite particles remain on the individual sections of the structured surface. Whilst a particularly large quantity of graphite particles is brushed in in the region of the largest cavities, and consequently remains there, the remaining quantity is significantly lower in less deeply structured regions. Independently thereof, the remaining quantity of colour particles (graphite dust) is higher in the region of the matt sections than in the region of the glossy pores. This creates an uneven distribution of the graphite particles on the protective layer. In order to fix the graphite particles, a particularly thin lacquer layer, which covers the entire decorative surface of the material board and consequently also the graphite particles, is then applied and cured by means of UV light. Alternatively, other powdery pigments can also be applied, for example. A lacquer which is cured by means of electron beam curing could also be applied as a fixing layer.

[0057] A material board which is produced in this way can, for example, be separated for further processing. Corresponding locking profiles can then be arranged on the side edges such that panels are created. The corresponding locking profiles can be configured as glueless locking profiles which prevent both a height offset of the panels connected to one another and the formation of a gap between the connected panels. Alternatively, panels can also be separated or respectively produced by arranging the corresponding locking profiles prior to the subsequent processing.

EXAMPLE 2

[0058] A material board having a decorative surface is provided. The material board has a base plate made of wood material, in this case a fibreboard. A first coloured decoration has been applied to the fibreboard. The coloured decoration has been produced in multiple thin layers and shows a wood decoration. A transparent protective layer made of lacquer has been applied to the coloured decoration. Glossy pores have in turn been applied to the transparent protective layer in regions, in which the coloured decoration shows pores of the wood. The glossy pores likewise consist of a lacquer which has a higher gloss level compared with the transparent protective layer, but whichas describedhas only been applied to individual sections of the surface. The decorative surface is ready for use.

[0059] In order to alter the visual effect of the decorative surface, a dark pigmented lacquer is provided. The lacquer is rolled onto the surface at a particularly low pressure and particularly thinly by means of an applicator roller. Due to the low pressure and the particularly thin method of application, significantly less pigmented lacquer sticks in the region of the glossy pores compared with the sections of the structured surface, to which no glossy pores are applied. The pigmented lacquer layer is then cured, in this case by means of UV light. Alternatively, an electron beam curing can, for example, also be performed to this end.

[0060] A material board which is produced in this way having a subsequently altered decorative surface can also be separated as described in Example 1 and can be further processed to form the panel. Alternatively, the separation and the further processing to form the panel can also be carried out prior to altering the visual effect of the decorative surface, such that the subsequent altering of the decorative surface is performed on the individual panels.

[0061] Irrespectively of whether the second coloured decoration is applied as powder, plate-shaped pigment or as a liquid surface coating, a material board made of, for example, fibreboard, chipboard, OSB board, laminate board or WPC or respectively a multi-layered board made of a combination of said materials can in principle be used. In addition, the second coloured decoration produced by means of a powder and a fixing layer can of course also be applied to a lacquer surface which is ready for use, or respectively the second coloured decoration which is configured as a liquid coating agent can be applied to a synthetic resin surface which is ready for use.

[0062] Although some aspects have been described in connection with or as one method step, it is understood that these aspects also constitute a description of an appropriate block or detail or feature of an appropriate device. Similarly, aspects which have been described in connection with a device also constitute a description of the appropriate method such that a block element or a component of a device is also to be understood to be an appropriate method step or as a feature of a method step.

EXAMPLE 3

[0063] A material board with a decorative layer which is ready for use is provided. The material board comprises a base plate which is configured as an MDF board, CDF board, HDF board, chipboard, solid core, fibre cement board or glass-fibre reinforced plastic board. The base plate is coated with a decorative layer which is ready for use. The decorative layer can comprise a laminated surface, in particular a CPL or HPL or a lacquer coating. In addition, the decorative layer which is ready for use has a structured surface with a 3D structure. The decorative layer which is ready for use can also be applied in accordance with Example 1 using the DPL method.

[0064] A second coloured decoration is applied to the decorative layer which is ready for use. To this end, colour particles in powder form are sprayed onto, percolated onto, or e.g. applied by means of an applicator roller to, the structured surface of the decorative layer which is ready for use. The colour particles are then massaged into the structures of the surface by means of an introducing device such as e.g. a cloth or a sponge. Alternatively, the particles can also be applied directly to the introducing device and can be transferred to the surface during massaging in. Alternatively or additionally, the applied, surplus particles of the second coloured decoration can e.g. also be partially brushed off, sucked off or blown off so that an uneven distribution is created.

[0065] Irrespective of the method of application and method of distribution, a transparent fixing layer is applied following the uneven distribution. The fixing layer can be configured e.g. as a lacquer layer.

EXAMPLE 4

[0066] Starting from a material board which is provided according to Example 1, 2 or 3, a pigmented liquid surface coating is applied as a second coloured decoration to the structured surface of the decorative layer which is ready for use. The application is carried out by means of a spraying device, but it can alternatively also be carried out e.g. by means of an applicator roller. An intermediate processing of the second coloured decoration is then carried out, during which the applied liquid surface coating is distributed by means of an introducing device. The liquid surface coating can thus be massaged into the structures in accordance with Example 3. Surplus material is thereby removed. The unevenly distributed pigmented liquid surface coating (second coloured decoration) is then dried and cured, e.g. by means of UV light. In order to ensure that the second coloured decoration is particularly protected, a protective layer, e.g. a lacquer layer containing corundum, can be applied to the second coloured decoration and cured.

[0067] The indicated materials of the base plate and the materials of the decorative layer which is ready for use can in principle be freely combined. Thus, all of the indicated base plates (fibreboard, MDF board, HDF board, CDF board, chipboard, solid core, fibre cement board, glass-fibre reinforced plastic board and WPC board) can ultimately be coated with any of the indicated decorative layers (HPL, CPL, DPL, lacquer coating, etc.) and can form a material board. All of the indicated decorative layers which are ready for use can also be coated both with colour particles in powder form and with a pigmented surface coating in order to respectively configure a second coloured decoration.