DE102019117425B4 - Plate-shaped component and method for its manufacture - Google Patents

Abstract

Plate-shaped building element, in particular floor panel, which has a carrier plate (2) with a top-side wear layer (3), characterized in that the carrier plate (2) is formed on the basis of a wood material and/or a plant material and magnesium oxide (MaO), wherein the proportion of the wood material and/or the plant material is at least 65% and the proportion of magnesium oxide is at least 5% and the carrier plate (2) and the wear layer (3) are pressed and glued together under the influence of temperature and pressure and a dense counter-layer (4) is provided on the underside of the carrier plate (2) and the side edges (7, 8) of the carrier plate (2) are provided with a hydrophobizing agent which contains antimicrobial and/or antibacterial active ingredients.

Description

The invention relates to a plate-shaped building element, in particular a floor panel, and a method for its production.

Surface coverings, such as floor coverings, are available in a wide variety of designs. Plate-shaped building elements are widespread, particularly floor panels in the form of laminate or parquet with carrier plates made of compressed fiber materials. A wear layer, usually made up of several layers, is provided on the top of the carrier plate. This has a decorative layer, for example a resin-coated decorative paper. The decorative layer determines the appearance of the laminate. The so-called overlay forms a seal as the top layer and gives the building element a high surface durability. A counter-layer can be applied to the underside of the carrier plate. This serves to ensure dimensional stability and to block moisture. If necessary, impact sound insulation can also be provided on the underside.

In order to connect the building elements to one another, these are now mostly equipped with a so-called click system. This involves mechanical locking devices on the grooves and on the tongues, which engage with one another in a locking manner when building elements are adjacent to one another in a floor covering. This is intended to prevent the formation of gaps in the installed floor covering due to expansion and contraction processes.

The EN 10 2013 113 478 A1 discloses a plate-shaped construction element in the form of a panel, which has a carrier plate and a top-side wear layer. The carrier plate consists of a composite material made of fibers and a hydraulic binder. The wear layer consists of a natural material-reinforced plastic. The carrier plate and the wear layer are hot-pressed together.

Also from the EN 10 2005 017 392 A1 A floor panel is known which has a carrier plate, with a wear layer with a decorative layer and an overlay arranged above the carrier plate. The carrier plate is formed on the basis of a mineral material and a binding agent.

Through the EP 3 494 267 B1 Furthermore, a floor panel and a production process for it are state of the art. The floor panel is made of magnesium oxide and has mechanical fasteners on the side edges.

In the EP 2 955 296 A1 In a known method for producing a panel, in particular a floor panel, at least one side surface is at least partially printed with a sealing material by means of a 3D printer, wherein a part of the sealing material forms part of the surface of the panel.

Screeds based on magnesia, so-called stone-wood screeds, are also known. However, magnesia-bound screeds cannot be used in rooms with high humidity, especially permanent humidity. Protection against rising damp is also required.

The three-layer structure of a plate-shaped component with profiled joining surfaces, as described above, is common, with the carrier plate consisting of a compressed fiberboard. The fiberboards are generally well suited for this purpose. They have the necessary stability, are easy to work with and are inexpensive. Nevertheless, there is potential for improvement in terms of their performance properties, in particular their resistance to moisture, weathering and fungal and/or pest infestation, for example termites, but also in terms of their sustainability.

The WO 2015/078443 A1 relates to a method for producing a floorboard which has a carrier plate and a veneer on the top. The floorboard produced is a plate-shaped component which has a carrier plate with a wear layer on the top, whereby the carrier plate can be formed on the basis of a wood material and/or a plant material as well as magnesium oxide. The carrier plate and the wear layer are pressed and glued together under the influence of temperature and pressure.

The invention is based on the object of creating an advantageous, qualitatively improved plate-shaped component with advantageous usage properties and of demonstrating a method for its production.

The solution to the relevant part of the problem is shown in claim 1.

A method according to the invention is characterized in claim 13.

Advantageous embodiments of the plate-shaped component according to the invention and of the manufacturing method are the subject of the dependent claims.

The plate-shaped component has a carrier plate and a top-side wear layer. According to the invention, the carrier plate is formed on the basis of a wood material and/or a plant material and magnesium oxide (MaO). The proportion of wood material and/or plant material in the carrier plate is at least 65% and the proportion of magnesium oxide is at least 5%. Another essential feature of the invention is that the carrier plate and the wear layer are pressed together under the influence of temperature and pressure.

The carrier plate is made from a wood material and/or a plant material and magnesium oxide. The proportion of wood material and/or plant material is at least 65%. Wood materials are materials that consist of shredded wood, plant materials consist of shredded plants. The wood particles and/or plant particles can be in the form of chips, fibers and/or powder. Bamboo is used in particular as a plant material.

An essential aspect of the invention is that the carrier plate consists at least predominantly of renewable, in particular rapidly renewable, raw materials.

The carrier board is slightly compressible and thus corresponds to a wood fiber board in many properties, but is flame-retardant, non-combustible and does not swell. As a result of the dense surface and the dense counter-pull provided by the invention, the plate-shaped component absorbs very little moisture.

Particularly preferably, the proportion of wood material and/or the proportion of plant material in the carrier plate is at least 75%. In particular, the proportion of wood material and/or plant material in the carrier plate is at least 85%. A mixture of wood material and plant material can also form the basis of the carrier plate, the sum of wood material and plant material being in the range specified according to the invention.

Magnesium oxide is the determining binding agent in the base of the carrier board. This is mixed with the wood materials and/or plant materials and pressed to form the carrier board. Despite the high wood material or fiber material content of more than 65%, the carrier board does not swell, but is nevertheless elastic to a limited extent. The high proportion of wood or plant materials results in a surface that is suitable for direct pressing with layers containing adhesive components, in particular melamine resins or impregnated papers.

In addition to wood material and/or plant material as the main component and magnesium oxide, the carrier plate can contain other additives, such as fillers. Additives are in particular hydraulic binders. In addition to magnesium oxide, magnesium chloride (MgCl2) and/or calcium sulfate dihydrate (gypsum) (CaSO4 · 2 H2O) or cement, such as lime cement, are particularly preferably also included.

One aspect of the invention provides for the pressing of the carrier plate and the wear layer in a short-cycle press or a continuous press. In the press, the layers and the layers forming the layers are pressed under heat and pressure. The pressure build-up and pressure reduction of the press can be regulated in stages. The components, i.e. the carrier plate or a large-area starting carrier plate and the components of the wear layer, are arranged on the press table in the press. The press is closed and the temperature and pressure act on the components. The wear layer has adhesive components. These are temperature-activated adhesive components. During hot pressing, the adhesive components and possibly other binding agent components are activated and plasticized.

Adhesive components in the wear layer are resins, particularly polycondensation resins. Melamine or polyurethane-based adhesive components are preferably used. These can be incorporated into the wear layer separately, for example as a powder layer. The adhesive components are particularly useful when integrated into a layer of the wear layer, for example melamine or polyurethane-impregnated decorative papers are used. The carrier plate and wear layer are bonded together. The surface and structure of the component are formed. The adhesive or resin components harden immediately upon cooling. The adhesives are formulated in such a way that they bind when cooled, but still have elastic properties. For this purpose, the adhesives in the form of resins are preferably elasticized by polyurethane additives.

The wear layer can be a single layer of decorative paper. The decorative paper is a cellulose-based layer of paper that has a decorative surface. The decorative paper is impregnated with adhesive components, for example hardenable synthetic resin. This is preferably an aminoplastic resin, a melamine resin, a polyurethane or a mixture of the aforementioned substances. The weight proportion of the impregnation is 70 to 130 percent by weight, based on the weight of the starting paper. In The impregnation may contain additives, such as antistatic agents or additives that increase wear resistance.

The invention provides in particular that the wear layer and the carrier plate are pressed directly together. The wear layer has at least one adhesive layer. The layer can consist of adhesive components or contain adhesive components. If the wear layer only comprises one layer of decorative paper, this is pressed directly onto the carrier plate.

The wear layer can comprise at least one layer of paper, in particular of melamine- or polyurethane-impregnated decorative paper, fabric, decorative laminate, dye, sealant, wear protection, fleece, vinyl, wood veneer, cork, polyethylene terephthalate (PET), polyethylene (PE) or polypropylene (PP).

The wear layer is preferably constructed in multiple layers. Several layers of paper or coated films can be provided. Furthermore, one or more layers of core paper can be integrated beneath the layer of decorative paper. The wear layer can also comprise an overlay (protective layer) which is arranged above the decorative paper. The overlay, i.e. the protective layer, preferably contains abrasion-resistant components, in particular minerals, preferably corundum particles. These highly abrasion-resistant components are already added when the overlay is impregnated.

In an advantageous embodiment, the wear layer has a decorative layer, in particular a resin-impregnated decorative paper or a printed decorative layer, as well as a wear protection layer arranged on the upper side.

In a special embodiment, the decorative paper can also be impregnated with abrasion-resistant components, e.g. corundum or silanized corundum, on the top side. This makes it possible to achieve particularly high levels of abrasion resistance or can then be used on overlay papers without corundum and still produce highly abrasion-resistant components.

Depending on the use or intended application of the component, it may be expedient if the wear layer is reinforced by at least one reinforcement layer. This can improve the tear resistance of the wear layer and in particular of the decorative paper contained in the wear layer. Nonwovens, glass fabrics or glass fleeces are used as reinforcement layers. The at least one reinforcement layer is arranged below the decorative paper. The reinforcement layer is also preferably resin-impregnated.

A stabilization layer can be integrated into the carrier plate. This can be a prefabricated stabilization layer that is embedded in the carrier plate during its manufacture. In particular, nonwovens, grid or fabric layers are used as stabilization layers.

In practice, a carrier plate having a density of greater than or equal to (≥) 700 kg/m ³ is advantageous. In particular, the carrier plate has a density between greater than or equal to (≥) 700 kg/m ³ and greater than or equal to (≥) 1,800 kg/m ³ . A carrier plate whose density is between 900 kg/m ³ and 1,400 kg/m ³ inclusive is particularly preferred. A carrier plate with a transverse tensile strength of greater than or equal to (≥) 1.5 N/m ² is also advantageous; in particular, the carrier plate has a transverse tensile strength between 2.0 N/m ² and 6.0 N/m ² .

The wear layer can be ground flat. Depending on the surface requirements, it is advisable to use an abrasive with a grain of 80 or 120.

The surface of the carrier plate facing the wear layer can alternatively be provided with a surface-enlarging profile. The surface-enlarging profile is carried out in particular mechanically, preferably by roughening. This can be done by grinding, brushing and/or embossing. Roughening the carrier plate increases its surface. The macroscopic conditions of the surface influence the bond strength. As the surface increases after roughening, the surface-dependent atomic and molecular interactions increase. This improves the adhesion between the carrier plate and the wear layer.

Mechanical processing of the surface of the carrier plate, for example by grinding, can also be useful in order to even out unevenness in the plate or layer. This can also be used to provide the carrier plate surface with a structure. In addition to grinding, such a structure can also be created by milling, brushing or embossing. This carrier plate, which has a recessed structure on the surface, is pressed onto the wear layer. This makes it possible to obtain structures on the surface, i.e. on the visible side of the component, that are deeper than the actual thickness of the wear layer.

The surface of the carrier plate can be subjected to a profile-giving surface treatment in such a way that the structure can be recognized in the finished component surface. The structure Examples of such features include wavy structures or joint-like recesses. This allows stone or tile decors to be reproduced.

The surface of the carrier plate is provided with a structure or a structural image, which can be seen on the finished plate-shaped component and gives it the surface appearance. The structure is created primarily through mechanical processing.

The plate-shaped component according to the invention is in particular a floor panel. The plate-shaped component has a top side, a bottom side and at least four edge sides. The edge sides are designed to be connected to edge sides of other plate-shaped components in order to cover an area of a room. For this purpose, in an advantageous embodiment of the component, connecting means are designed on the side edges of the carrier plate, for example in the form of a tongue and groove or snap-in and/or click connections.

Furthermore, depending on the application or intended use of the components, it can be advantageous if the carrier plate is provided with a seal at least on the underside. The seal serves in particular to block moisture and supports the resistance of the carrier plate to moisture, weather influences and/or fungal attack. In particular, such a carrier plate is waterproof. In general, the plate-shaped components according to the invention are suitable for use in damp rooms.

One aspect is to prevent the carrier plate from becoming permanently damp. To do this, the carrier plate is sealed or sealed at the top and bottom as well as at the side edges or edge surfaces. Due to the binding agent in the carrier plate, it exhibits virtually no swelling behavior.

A counter-layer is provided on the underside of the carrier plate. This serves to stabilize the material and can act as impact sound insulation. The counter-layer can be applied separately. It is possible and advantageous to apply the counter-layer when pressing the carrier plate and the wear layer, i.e. the counter-layer layer is pressed together with the carrier plate and wear layer. The counter-layer preferably consists of an impregnated fleece or fabric layer. These have tensile properties that are tailored to the finished building element.

To produce a plate-shaped component according to the invention, a large-format starting carrier plate with a rectangular configuration is provided. Large-format means that the starting carrier plate has dimensions that are many times larger than the plate-shaped component to be produced. The starting carrier plate can, for example, have a width of 1,220 mm and a length of 2,440 mm. According to the invention, the starting carrier plate is made from a wood material and/or a plant material and magnesium oxide. The wood material and/or the plant material make up the main proportion, totaling at least 65%. The proportion of magnesium oxide is at least 5%. The starting carrier plate is not yet profiled on the edges, i.e. the side edges do not yet have any connecting means.

The wear layer is placed on the original carrier plate. The wear layer can be single-layered, but in particular multi-layered. The wear layer has at least one adhesive layer. The wear layer preferably comprises at least one melamine- or polyurethane-impregnated decorative paper and an overlay placed on top of it. The overlay forms a transparent wear layer and can also consist of an impregnated paper. It is also possible to apply the overlay as a pasty or liquid coating. The carrier plate and the wear layer are then pressed together under the influence of temperature and pressure, thereby bonding them.

The multilayer body is pressed in a hot press. For this purpose, the components of the multilayer body are positioned in the press. The pressing takes place at temperatures in a range of 100° Celsius to 240° Celsius. This temperature is set on the surface of a press plate that is brought into contact with the component. In a special embodiment, the temperature is applied during pressing from the side of the wear layer, i.e. from the top. This is particularly preferred if the counter-layer is only applied later in another separate work step.

The pressing temperature is in particular above 120°C. Preferably the temperature is between 180°C and 210°C inclusive.

In particular, the pressing time is less than or equal to (≤) 120 seconds. In particular, the pressing time is between 5 seconds and 60 seconds, preferably between 5 seconds and 45 seconds.

The pressing pressure is greater than or equal to (≥) 1,000 kilopascals (kPa) and can be up to and including 6,500 kPa. Preferably, the pressing pressure is greater than or equal to (≥) 3,500 kPa.

A short-cycle press or a continuous press (CPL) is used as the press.

An adhesion promoter can be provided between the carrier plate and the wear layer. The adhesion promoter improves the bond strength between the wear layer and the carrier plate. The adhesion promoter is preferably applied separately as part of a surface treatment of the carrier plate or the original carrier plate. Modified polyolefins or silane adhesion promoters are suitable as adhesion promoters. Polyurethane undercoats or primers are also suitable. An adhesion promoter that is advantageous for practical use is a PUR binder that hardens by absorbing moisture from the ambient air or the original carrier plate.

Moisture from the pressing process can escape into the carrier plate.

During the pressing process, the surface of the wear layer can be given a structure, pattern or ornaments using a structural sheet or a structure generator. The structure can vary in terms of its gloss level in certain areas. Various structure depths are also possible.

After the multilayer body has been pressed, the pressed multilayer body is removed from the press. Immediately or later, the pressed multilayer body is separated or divided into individual plate-shaped components. The individual components are profiled on their side edges in a subsequent work step. Profiling takes place after the pressed multilayer body has cooled down to room temperature. During profiling, the individual components are provided with connecting elements on their side edges, i.e. on the long and narrow sides.

The plate-shaped component can have a total thickness between 4 mm and 20 mm.

The wear layer can have a structure that matches the decorative image. The surface of the finished component can have different levels of gloss, preferably 3 to 4 different levels of gloss, matching or coordinated with the decorative image of the decorative paper. Depending on the number of layers, the wear layer has a thickness in a range of 0.10 to 0.50 mm.

The wear layer preferably has a protective layer above the decorative layer. This preferably contains anti-abrasive components. The protective layer, which is also referred to as an overlay, can be a layer of impregnated high-grade cellulose. This becomes transparent when pressed. The protective layer can alternatively be applied to the decorative layer as a liquid layer or as a powder and bonds with the decorative layer when pressed. The purpose of the protective layer is to protect the decoration against abrasion, scratches and other damage. In principle, it is possible to apply the protective layer to the top even after the carrier plate and wear layer have been pressed together. This is particularly the case when the protective layer is applied in liquid form and consists of a layer of varnish, e.g. UV varnishes, PUR varnishes, 2K varnish systems.

Aminoplastic resins, particularly melamine resins or polyurethane-based resins, are used for impregnation of the impregnated layers of the wear layer. After hardening via polycondensation, the resins form thermosetting plastics. The carrier plate and wear layer are immediately pressed together under the influence of temperature and heat to form the plate-shaped component.

To improve the assembly and performance of the components, a lubricant and/or sealant can be applied to the side edges of the carrier plate.

According to the invention, the side edges of the carrier plate are provided with a hydrophobic agent, wherein the hydrophobic agents contain antimicrobial and/or antibacterial active ingredients.

The panel-shaped building element according to the invention is waterproof. The building element absorbs a maximum of 5% water and does not tend to swell, as is the case with conventional wood-based building elements or panel materials. The edge swelling is less than 3% after 24 hours of water storage. The building element according to the invention can be classified as flame-retardant, non-combustible and non-swelling. The panel-shaped building element shows little growth in length and width and is therefore very dimensionally stable and can be installed floating over distances of more than 15 meters without an expansion joint. A building element according to the invention has a high resistance to moisture, weather influences and fungal attack. In addition, it consists largely of renewable raw materials. This is a particularly advantageous aspect in terms of the usage and use properties.

• 1 eine Seitenansicht auf ein erfindungsgemäßes plattenförmiges Bauelement und
• 2 einen Ausschnitt aus dem Verbindungsbereich von zwei miteinander verbunden Bauelementen.

The invention is described in more detail below using an exemplary embodiment.

• 1 a side view of a plate-shaped component according to the invention and
• 2 a section of the connection area of two interconnected components.

The 1 and 2 are technically schematic and not to scale.

1 shows a plate-shaped component 1 in the form of a floor panel. 2 shows a section of two interconnected building elements 1. The building element 1 is rectangular and has a carrier plate 2 with a wear layer 3 on the top. A counter-pull layer 4 is provided on the underside of the carrier plate 2, which is fully glued to the underside of the carrier plate 2. The counter-pull layer 4 supports the dimensional stability of the building element 1 and serves to seal off moisture and to insulate against impact sound.

The carrier plate 2 is formed on the basis of a wood material and/or a plant material and magnesium oxide (MaO). The proportion of wood material and/or plant material in the carrier plate 2 is at least 65%, preferably the proportion of wood material and/or plant material in the carrier plate is at least 75%. A carrier plate 2 which has a wood material proportion and/or a plant material proportion of at least 85% is particularly advantageous. The proportion of magnesium oxide in the carrier plate is at least 5%.

A mixture of wood material and plant material can also be used. The wood and/or plant material particles are in chip, fiber and/or powder form. These are mixed with the magnesium oxide and pressed or bonded into plates. In addition to magnesium oxide, other binding agents can be included. These are in particular hydraulic binding agents.

The upper wear layer 3 is made up of one or more layers. In the embodiment shown here, two layers 5, 6 are shown. One layer 5 of the wear layer 3 is adhesive, i.e. the layer consists of adhesive components or contains adhesive components. The adhesive layer 5 is in particular a melamine or polyurethane-impregnated decorative paper. The adhesive layer 5 can also be a layer made of a resin-coated or resin-impregnated real wood veneer. The top layer 6 is an overlay. This forms a seal and gives the plate-shaped component 1 a high surface durability. Layer 6 contains corundum particles, which helps to increase the micro-scratch and wear resistance. The upper layer 6 on the tread side forms a wear protection layer.

The plate-shaped component 1 is profiled on its side edges 7, 8 and provided with connecting means 9 and 10. The connecting means 9 on the first side edge 7 has a continuous coupling groove 11 and a locking tongue 12 projecting on the floor. A continuous nose-like rib 13 is formed on the free end of the locking tongue 12. The locking means 10 is formed on the opposite second side edge 8 by a projecting coupling spring 14. A locking groove 15 is provided on the underside of the coupling spring 14. The contours of the coupling groove 11 and the coupling spring 14 are coordinated with one another in such a way that when the components 1 are laid, they engage with one another in a locking manner when adjacent components 1 are in a floor covering.

To produce a plate-shaped component 1, a multilayer body is formed. For this purpose, a large-area starting carrier plate is provided, which is formed on the basis of a wood material and/or a plant material and magnesium oxide. The proportion of wood material and/or the proportion of plant material is at least 65% in total. The proportion of magnesium oxide is at least 5%.

A wear layer is applied to the top of the original carrier plate, which has at least one adhesive layer 5. A counter-pull layer 4 is arranged on the underside of the original carrier plate. The multi-layer body is then hot-pressed in a press. The wear layer 3 is firmly connected to the original carrier plate, and the counter-pull layer 4 is also firmly connected to the original carrier plate. During hot-pressing, the adhesive in the adhesive layer is plasticized. The wear layer 3 is pressed and glued to the original carrier plate. The same applies to the counter-pull layer 4.

When pressing, the pressing pressure is more than 1000 kilopascals (kPa), preferably the pressing pressure is greater than or equal to (≥) 3500 kilopascals (kPa). The pressing temperature is above 100 °C, in particular the pressing temperature is greater than or equal to (≥) 120 °C. Preferably the pressing temperature is between 180 °C and 210 °C. The pressing time is less than 2 minutes (120 seconds). In particular the pressing time is between 5 and 60 seconds, advantageously between 10 and 45 seconds.

The pressed multilayer body is removed from the press and, after cooling, separated into individual plate-shaped components 1. In a further processing step, the components 1 are profiled on their side edges 7, 8 and provided with the connecting elements 9, 10.

The initial carrier plate can be sealed before the multilayer body is formed. In particular, the initial carrier plate can be coated with a sealant on the underside or a sealant can be applied to the underside.

When pressing the multi-layer body, a structure can be pressed into the surface of the wear layer.

A lubricant and/or sealant can be applied to the side edges 7, 8 of the carrier plate 2 on the finished components 1. Furthermore, the side edges 7, 8 of the components 1 are provided with a hydrophobic agent, wherein the hydrophobic agents contain in particular antimicrobial and/or antibacterial active ingredients.

The side edges 7, 8 of the carrier plate 2 or of the plate-shaped component 1 can be chamfered on all four or just two edges. The chamfer can be colored to contrast or match the decor. The chamfers can be painted or transparent.

Reference symbol list

1

Plate-shaped component

2

Carrier plate

3

Wear layer

4

Countermove position

5

Location of 3

6

Location of 3

7

Page margin

8th

Page margin

9

Connecting elements

10

Connecting elements

11

Coupling groove

12

Locking tongue

13

rib

14

Clutch spring

15

Locking groove

Claims (18)

Plate-shaped building element, in particular floor panel, which has a carrier plate (2) with a top-side wear layer (3), characterized in that the carrier plate (2) is formed on the basis of a wood material and/or a plant material and magnesium oxide (MaO), wherein the proportion of the wood material and/or the plant material is at least 65% and the proportion of magnesium oxide is at least 5% and the carrier plate (2) and the wear layer (3) are pressed and glued together under the influence of temperature and pressure and a dense counter-layer (4) is provided on the underside of the carrier plate (2) and the side edges (7, 8) of the carrier plate (2) are provided with a hydrophobizing agent which contains antimicrobial and/or antibacterial active ingredients. Component according to Claim 1 , characterized in that the proportion of wood material and/or plant material in the carrier plate (2) is at least 75%, preferably at least 85%. Component according to Claim 1 or 2 , characterized in that the wood material and/or the plant material is in chip, fiber and/or powder form. Component according to one of the Claims 1 until 3 , characterized in that the carrier plate (2) contains, in addition to wood material and/or plant material as the main component and magnesium oxide, further additives, in particular hydraulic binders, preferably magnesium chloride (MgCl2) and/or calcium sulfate dihydrate (Ca[SO4] · 2 H2O) or cement. Component according to one of the Claims 1 until 4 , characterized in that a stabilizing layer, in particular a fleece, grid or fabric layer, is integrated into the carrier plate (2). Component according to one of the Claims 1 until 5 , characterized in that connecting means (9, 10) are provided on the side edges (7, 8) of the carrier plate (2). Component according to one of the Claims 1 until 6 , characterized in that the carrier plate (2) is provided with a seal at least on the underside. Component according to one of the Claims 1 until 7 , characterized in that the wear layer (3) has a multi-layer structure. Component according to one of the Claims 1 until 8th , characterized in that the wear layer (3) has at least one layer of paper, in particular of melamine- or polyurethane-impregnated paper, fabric, decorative laminate, dye, sealant, wear protection, fleece, vinyl, wood veneer, cork, polyethylene terephthalate (PET), polyethylene (PE) or polypropylene (PP). Component according to one of the Claims 1 until 9 , characterized in that the carrier plate (2) has a density of greater than or equal to (≥) 700 kg/m3, in particular between greater than or equal to (≥) 700 kg/m3 and greater than or equal to (≥) 1800 kg/m3, preferably from 900 kg/m3 to 1400 kg/m3, and has a transverse tensile strength of greater than or equal to (≥) 1.5 N/m2, in particular between 2.0 N/m2 and 6.0 N/m2. Component according to one of the Claims 1 until 10 , characterized in that a lubricant and/or sealing agent is applied to the side edges (7, 8) of the carrier plate (2). Component according to one of the Claims 1 until 11 , characterized in that the wear layer (3) has a decorative layer (5), in particular a resin-impregnated decorative paper or a printed decorative layer or a real wood veneer, and a wear protection layer (6) arranged on the upper side. Method for producing a plate-shaped component which has a carrier plate (2) with a top-side wear layer (3), characterized by the following steps: - formation of a multi-layer body, for which - a large-area starting carrier plate is provided which is formed on the basis of a wood material and/or a plant material and magnesium oxide (MaO), wherein the proportion of the wood material and/or the plant material is at least 65% and the proportion of magnesium oxide is at least 5%, and a wear layer is applied to the top of the starting carrier plate, which has at least one adhesive layer; - pressing the multi-layer body in a press under the influence of temperature, wherein the wear layer is connected to the starting carrier plate; - the pressed multi-layer body is then removed from the press and separated into individual plate-shaped components and - the components (1) are profiled on their side edges (7, 8) and provided with connecting means (9, 10); - a dense counter-layer (4) is applied to the underside of the components (1) and - a hydrophobic agent containing antimicrobial and/or antibacterial active ingredients is applied to the side edges (7, 8). Procedure according to Claim 13 , characterized in that when pressing the multi-layer body - the pressing pressure is greater than or equal to (≥) 1,000 kilopascals (kPa), preferably greater than or equal to (≥) 3,500 kilopascals (kPa), - the pressing temperature is greater than or equal to (≥) 100 °C, in particular greater than or equal to (≥) 120 °C, preferably between 180 °C and 210 °C and - the pressing time is less than or equal to (≤) 120 seconds, in particular between 10 and 60 seconds. Procedure according to Claim 13 or 14 , characterized in that the starting carrier plate is sealed before formation of the multilayer body, in particular is provided with a seal on the underside. Method according to one of the Claims 13 until 15 , characterized in that before pressing, a counter-tension layer (4) is arranged on the underside of the starting carrier plate, which is connected to the underside of the starting carrier plate during pressing of the multi-layer body. Method according to one of the Claims 13 until 16 , characterized in that the wear layer (3) is formed from two or more layers (5, 6). Method according to at least one of the Claims 13 until 17 , characterized in that when the multi-layer body is pressed, a structure is pressed into the surface of the wear layer (3).

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