DE10330297A1 - Floor plate with a core of wood-based material - Google Patents

Abstract

The floor plate with a core (5) consisting of a wood material comprises a decorative layer (1) formed by a cold-ceramic coating containing magnesium oxide and ammonium polyphosphate. An independent claim is also included for a method for producing the proposed floor plate.

Description

The The invention relates to a floorboard with a core of wood-based material, in particular MDF, HDF or OSB, and an applied on a top decorative layer, wherein the edges on the longitudinal and transverse sides are profiled so that interconnected plates in the vertical and horizontal directions locked to each other are.

Such a floor plate is for example from the DE 100 64 587 A1 known. These are laminate floor panels that can be laid floating. The panels are centrally provided at their side edges with a groove extending over the full longitudinal and / or transverse side. In one of the boundary sides of the groove, a cross-sectionally triangular depression is milled in each case. Two with their side edges juxtaposed panels form through the grooves a continuous slot closed on all sides, can be used in the connection and locking elements. The decorative layer of laminate panels consists of a printed paper layer which is covered by a synthetic resin layer. The printed decor is, for example, a wood grain or a stone look. Not only high print quality is required for the most natural possible appearance of the surface, but reliefs are often embossed into the synthetic resin layer to haptically support the optical character of the grain. Such panels can only be used in dry rooms because the surface is not waterproof.

From the US 6,397,547 is a Bodenpaneel known, which is provided at the side edges with a tongue and groove profiling. Spring and groove are formed on plastic inserts, which are glued to the core of wood-based material. On the spring projections are provided which can engage in depressions formed in the groove, so that the panels are connected by snapping (click connection) with each other. In order for the panels to be used in wet rooms, the decorative layer must be waterproof. For this purpose, it is proposed inter alia to use a plastic film. Tile or stone decor can be optically, but especially haptically with a plastic film does not imitate very well, so that a laid out with these panels floor when touching often makes a substandard impression.

From This problem is based on the initially described floorboard be improved so that it has a high quality, wear-resistant surface and also in damp rooms can be used.

to Troubleshooting is a generic floor plate characterized in that the decorative layer by a cold-ceramic coating is formed and that the coating magnesium oxide and ammonium polyphosphate contains.

By This coating achieves a very hard and waterproof surface. Both the look and the feel of this surface is a completely other than the previous synthetic resin coating.

The Cold-ceramic coating is preferably substantially made of wood fiber, magnesium oxide and ammonium polyphosphate.

By additional mineral additives (Glass granules, stone granules, ash, sand or filter dusts) and / or Dyes can individual decors and surfaces (Marble, granite, terracotta, ceramics, etc.) are produced so that the panels are versatile in the entire living area. Thereby, They are able to lay the panels floating and glueless can also be easily processed by DIYers.

to Training a click profile can at a longitudinal and a transverse edge a Spring and to the opposite Edges are formed a groove, wherein the spring and the groove are provided with integrated locking means to each other correspond.

The springs and grooves can be worked out of the core. In order to prevent the laid panels from swelling due to moisture penetrating at the butt joints, the profiled edges are preferably coated watertight. It is also possible when laying a silicone gasket or the like insert.

feathers and grooves can also be formed on connectable with the core inserts. In this case are the stakes preferably made of a waterproof material.

Of the Proportion of wood fiber in the decorative layer is preferably between 5 and 50 vol.%, in particular 10 vol.%.

The Decorative layer is preferably 0.5 - 4 mm and especially 2 mm thick.

If a cold-ceramic coating is also applied to the underside of the panel, this can not only take over the function of the counter-coating otherwise required with laminate panels, but the sound-absorbing and sound-absorbing properties increase significantly, since the density of the cold-ceramic coating is between 1000 and 1500 kg / m ³ , and thus is much higher than the density of the core material. This coating has the property that noise is reduced to the level of floors firmly connected to the ground. Since this training also the bottom of the panel is waterproof, even wet or dampening surfaces are not critical for the floor.

Around to prevent the coating from fumigating ammonia when the plate of increased humidity is exposed or comes into contact with water is preferably an impregnation the base of polyurethane applied to the coating. Dependent on on the size of the used Wood fiber or the grain size of the mineral additions is the cured one Coating open pore. The impregnating agent seals the pores. The same effect can be achieved if the decorative layer with a varnish is sealed.

In the not yet or not completely cured coating can Embossed relief such that, for example, the effect of a broken surface, such as she in natural Sandstone is found, is achievable. The decorative layer can, for example also be painted to intensify the look of the decor. Relief and decor can occur together.

Around the surface to smooth the cold-ceramic coating, the coated becomes Plate with a low pressure of less than 30 bar, in particular 15 bar, applied. When simultaneously applied a temperature of 55 ° C becomes, already in the production of the evaporation of ammonia reached.

• a) Aufrauen der Oberseite des Kerns, bis die Fasern des Holzwerkstoffs hochstehen,
• b) Tränken der Oberseite des Kerns mit einem Gemisch aus reinem Magnesiumoxid und Ammoniumpolyphosphat,
• c) Aufbringen einer kaltkeramischen Beschichtung, die Magnesiumoxid und Ammoniumpolyphosphat enthält, als Dekorschicht.

A board having a core of wood-based material, in particular MDF, HDF or OSB, for use as a starting material for a floor panel described above, can be finished by the following steps:

• a) roughening the top of the core until the fibers of the wood material are upright,
• b) impregnating the top of the core with a mixture of pure magnesium oxide and ammonium polyphosphate,
• c) applying a cold-ceramic coating containing magnesium oxide and ammonium polyphosphate, as a decorative layer.

The Cold-ceramic coating is preferably substantially made of wood fiber, magnesium oxide and ammonium polyphosphate.

The Adhesion of the cold-ceramic coating on the plate is improved if after watering with magnesia and ammonium polyphosphate wood fibers on top of the core. The coating can be on the core rolled up, sprayed on or to be infused. Is the proportion of wood fiber in the cold-ceramic Coating high enough, this can also be sprinkled.

ever thicker the cold-ceramic coating is to be made, the higher it gets the proportion of wood fibers chosen.

With Help a drawing to embodiments of the invention below explained become. It shows:

1 a floor panel in cross-section according to a first embodiment;

2 a floor panel in cross-section according to a second embodiment.

The panel consists of a core 5 from a wood-based material, in particular MDF, HDF or OSB, with a decorative layer applied on its upper side 1 , On one longitudinal and one transverse side the panel is behind 1 with one out of the core 5 milled out spring 2 Mistake. At the opposite longitudinal and transverse sides is from the core 5 one to the spring 2 corresponding groove 8th milled. The underside of the spring 2 has a lead 3 up, that to a bead 7 in the lower lip 6 the groove 8th corresponds. The lead 3 and the bead 7 form locking means which prevent a sliding apart of two interconnected panels in the transverse direction Q. The spring and the groove take over a locking in the vertical direction V.

The decorative layer 1 consists of a mixture of magnesium oxide, ammonium polyphosphate and preferably wood fiber. The wood fibers serve as filler. The coating can also consist only of magnesium oxide and ammonium polyphosphate. But that is quite expensive. Other fillers such as glass fibers or glass granules may also be used. For impact sound refraction, the layer may contain further granules and / or metal particles for reducing static charge. It may be added to other mineral components or dyes. The wood fiber content is between 5 and 50 percent by volume, preferably 10 percent by volume. The thicker the decorative layer 1 should be executed, the more wood fiber is mixed. The visible side of the decorative layer 1 has a stone identical appearance (granite, marble, etc.).

The mixture of magnesium oxide, ammonium polyphosphate and wood fiber may also contain dolomite. As further mineral additives glass granules, stone granules, ash, sand or filter dusts can be used. The finer the ingredients are ground, the more closed the later achievable surface of the decorative layer 1 , The dry ingredients are mixed first. Liquid ammonium polyphosphate is then added to the mixture and stirred. The chemical reaction is very fast and the liquid mixture can reach the nucleus for about 3 to 5 minutes 5 sprayed or rolled on. To slow the reaction, borax can be added to the mixture. The borax content is approximately 1% of the magnesium oxide content. Before the mixture is fully cured, the coating can be applied with a small pressure to produce a smooth surface. Tests with a pressure of 30 bar have given good results. 15 bars are certainly enough.

ever thicker the coating chosen is, the more filler, in particular wood fibers and / or granules are combined with the magnesium oxide and the ammonium polyphosphate. Is the proportion of the filler big enough, The coating can also be sprinkled on the top of the plate become.

The Coating has the advantage that it is waterproof. Thereby, that the surface the coating is open-pored, moisture can penetrate at least on the surface, what kind of the coating is not critical. But the moisture causes that ammonia vapors can outgas. For one This can be done for a certain period of time by appropriate admixing of the magnesium oxide be prevented. If the coating is at an elevated temperature is exposed before it is fully cured, is already at the production provokes the evaporation of a large proportion of ammonia. Experiments have shown that a temperature effect of 55 ° C is sufficient is. Preferably, the press plate is heated, with which the smooth surface the coating is produced.

The decorative layer 1 has a thickness of 0.5 - 4 mm. Preferably, it is 2 mm thick.

On the underside of the panel is an insulating layer 4 applied, which also consists of a cold-ceramic coating of magnesium oxide, ammonium polyphosphate and preferably wood fiber. The layer may contain granules for impact sound refraction and / or metal particles for reducing the static charge. Again, the wood fiber content is between 5 and 50 vol.%, Preferably 10%. The insulating layer 4 and the decorative layer 1 can be identical. The insulating layer 4 takes on the duties of a counterpart, bending the panel as a result of the decorating layer 1 prevents originating tensile forces.

To the adhesion of the decorative layer 1 on the top of the core 5 to increase, the top is roughened until the fibers stand up. Then magnesium oxide and ammonium polyphosphate are mixed in leg form and the plate is soaked before the coating is rolled on, sprayed, poured or sprinkled. When pressing the decorative layer 1 with the core 5 can be a relief in the same time Coating be embossed.

A ceramic coating with the following composition has proven to be well suited: burnt magnesium oxide 33.8% by weight ammonium polyphosphate 28.8% by weight glass granules 25.6% by weight ash 1 1, 8% by weight

An equally good behavior showed the following composition for the ceramic coating: burnt magnesium oxide 32.7% by weight ammonium polyphosphate 28.1% by weight mineral fillers (ash, glass granules, vermiculite, dolomite) 39.2% by weight dye <0.006% by weight

at This composition was the mass of wood fibers due to their low weight neglected. When coating the plate, the wood fiber was scattered on the surface. The proportion of ammonium polyphosphate is preferably always lower as the proportion of magnesium oxide. A share of up to 70% has proved to be useful.

This in 2 Panel is different from the one in 1 in that the spring 2 and the groove 8th not directly from the core 5 are milled out, but on waterproof inserts 9 . 10 are formed, which consist for example of plastic or aluminum and in corresponding recesses of the core 5 are glued. Unlike in 2 shown, the recesses for the inserts 9 . 10 be formed identically, so that both the production (milling of the recesses) and the subsequent gluing of the inserts 9 . 10 is simplified, because this edges can be done independently.

1

decorative layer

2

feather

3

head Start

4

Insulation layer / return

5

core

6

bottom lip

7

Beading

8th

groove

9

commitment

10

commitment

Q

Transversely horizontal direction

V

vertical direction

Claims (29)

Floorboard with a core ( 5 ) made of wood-based material, in particular MDF, HDF or OSB, and a decorative layer applied to an upper side ( 1 ), wherein the edges are profiled on the longitudinal and transverse sides so that interconnected plates in vertical (V) and horizontal (Q) direction are locked to each other, characterized in that the decorative layer ( 1 ) is formed by a cold-ceramic coating containing magnesium oxide and ammonium polyphosphate. floorboard according to claim 1, characterized in that the coating in Essentially of wood fiber; Magnesium oxide and ammonium polyphosphate consists. floorboard according to claim 2, characterized in that the proportion of wood fiber between 5 and 50% by volume, in particular 10% by volume. Floor panel according to claim 2, characterized in that the decorative layer ( 1 ) Is 0, 5 - 4 mm thick. Floor panel according to claim 4, characterized in that the decorative layer ( 1 ) Is 2 mm thick. Floor panel according to one or more of the preceding claims, characterized in that on the underside of the panel a cold-ceramic coating ( 4 ) containing magnesium oxide and ammonium polyphosphate. Floor panel according to claim 6, characterized in that the cold-ceramic coating ( 4 ) consists essentially of wood fiber, magnesium oxide and ammonium polyphosphate. Floor panel according to claim 6 or 7, characterized in that the decorative layer ( 1 ) and the coating ( 4 ) are identically constructed on the underside of the plate. Floor panel according to claim 1 or 2, characterized in that the cold-ceramic coating ( 1 . 4 ) Contains dyes. Floor panel according to claim 1 or 2, characterized in that the cold-ceramic coating ( 1 . 4 ) other mineral components are added. Floor panel according to claim 1, characterized in that at a longitudinal and a transverse edge a spring ( 2 ) and at the opposite edges a groove ( 8th ) is formed, and that the springs ( 2 ) and grooves ( 8th ) with integrated locking means ( 3 . 7 ) are provided. Floor panel according to claim 11, characterized in that springs ( 2 ) and grooves ( 8th ) from the core ( 5 ) are worked out. Floor panel according to claim 12, characterized in that springs ( 2 ) and grooves ( 8th ) with the core ( 5 ) connectable inserts ( 9 . 10 ) are formed. Floor panel according to claim 13, characterized in that the inserts ( 9 . 10 ) with the core ( 5 ) are glued. Floor panel according to claim 6, characterized in that the density of the coating ( 4 ) at the underside of the board is 1000 - 1500 kg / m ³ . Floor panel according to one or more of the preceding claims, characterized in that the decorative layer ( 1 ) is sealed or impregnated. floorboard according to claim 16, characterized in that the seal done by means of a clearcoat. Floor panel according to claim 16, characterized in that to prevent the Ausfoggens of ammonia vapors, the decorative layer ( 1 ) is provided with a PU-based impregnation. Process for refining a plate with a core ( 5 ) of wood-based material, in particular MDF, HDF or OSB, for use as a starting material for a floorboard according to one or more of the preceding claims, characterized by the following steps: a) roughening the upper side of the core ( 5 ), until the fibers of the wood material stand up, b) soaking the top of the core ( 5 ) with a mixture of pure magnesium oxide and ammonium polyphosphate, c) applying a cold-ceramic coating containing magnesium oxide and ammonium polyphosphate as decorative layer ( 1 ). A method according to claim 19, characterized in that after impregnation with a mixture of pure magnesium oxide and ammonium polyphosphate wood fibers on top of the core ( 5 ) are scattered. A method according to claim 19, characterized by applying a cold-ceramic coating consisting essentially of wood fiber, magnesium oxide and ammonium polyphosphate as decorative layer ( 1 ). Process according to Claim 21, characterized in that the cold-ceramic coating is applied to the top of the core ( 5 ) is sprinkled. Method according to one of claims 19 to 22, characterized by impressing a relief in the not yet or not fully cured coating. Method according to one of claims 19 to 23, characterized in that on the decorative layer ( 1 ) a paint layer is applied. Method according to one of claims 19 to 23, characterized by applying an impregnation PU-based to prevent the Ausfoggens of ammonia vapors. Method according to one or more of claims 19 to 23, characterized in that the cold-ceramic coating is solidified by pressure or temperature action. Method according to claim 26, characterized in that that the temperature is around 55 ° C is. Method according to claim 26, characterized in that that the pressure is less than 30 bar. Method according to Claim 28, characterized that the pressure is 15 bar.