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EP3347211B1 - Sol en liège structuré - Google Patents

Sol en liège structuré Download PDF

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Publication number
EP3347211B1
EP3347211B1 EP16767182.5A EP16767182A EP3347211B1 EP 3347211 B1 EP3347211 B1 EP 3347211B1 EP 16767182 A EP16767182 A EP 16767182A EP 3347211 B1 EP3347211 B1 EP 3347211B1
Authority
EP
European Patent Office
Prior art keywords
cork
wear layer
covering
layer
embossing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP16767182.5A
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German (de)
English (en)
Other versions
EP3347211A1 (fr
EP3347211B8 (fr
Inventor
Moritz Mühlebach
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Proverum AG
Original Assignee
Proverum AG
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Filing date
Publication date
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Publication of EP3347211A1 publication Critical patent/EP3347211A1/fr
Publication of EP3347211B1 publication Critical patent/EP3347211B1/fr
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Publication of EP3347211B8 publication Critical patent/EP3347211B8/fr
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/02—Flooring or floor layers composed of a number of similar elements
    • E04F15/10—Flooring or floor layers composed of a number of similar elements of other materials, e.g. fibrous or chipped materials, organic plastics, magnesite tiles, hardboard, or with a top layer of other materials
    • E04F15/107—Flooring or floor layers composed of a number of similar elements of other materials, e.g. fibrous or chipped materials, organic plastics, magnesite tiles, hardboard, or with a top layer of other materials composed of several layers, e.g. sandwich panels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
    • B44C1/24—Pressing or stamping ornamental designs on surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C5/00—Processes for producing special ornamental bodies
    • B44C5/04—Ornamental plaques, e.g. decorative panels, decorative veneers
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F13/00—Coverings or linings, e.g. for walls or ceilings
    • E04F13/07—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
    • E04F13/08—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements
    • E04F13/0871—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements having an ornamental or specially shaped visible surface

Definitions

  • the invention relates to cork panels which comprise a carrier plate, a cork covering and a wear layer, with a surface structure being formed in the cork covering.
  • the invention further relates to a method for producing such cork panels.
  • the US 2014/0196618 A1 (Floor Iptech) describes a process for structuring and printing surfaces, including the surfaces of floor panels. However, the embossing process described there is not used on cork surfaces.
  • the EP 2 082 897 B1 (Schulte) and the EP 2 039 530 B1 (Schulte) describe an embossing process for cork boards and the result of this process.
  • the cork panels are printed with a decor.
  • cork is elastic and has a high recovery behavior. At normal temperatures, an embossed structure can only be created in the cork layer to a limited extent and the results are not very satisfactory. Therefore, the two documents suggest heating the cork layer to 40°C to 80°C.
  • a sealant can be applied.
  • the seal is a layer of varnish, oil or wax.
  • DE202008018477U1 each shows a cork panel and a process based on the preambles of claims 1 and 14.
  • None of the known processes allow the production of embossed cork panels in which the surface structure is only created after a wear layer has been applied.
  • the application and distribution of the wear layer material is influenced by the structures; for example, the material collects in the structures. This is undesirable because the wear layer material cannot be processed (e.g. smoothed) in the same way as on flat surfaces. Due to different processing and/or uneven distribution of the wear layer, the optical properties of wear layers can change massively. For example, streaks or “orange peel” appear. This is usually undesirable.
  • the object of the invention is to create a structured cork panel belonging to the technical field mentioned at the outset and a method for its production, in which a high-quality wear layer can be obtained at different levels Structures can be produced and the wear layer is therefore only influenced by the structure in terms of its shape.
  • the cork panel comprises a carrier plate, a cork covering and a wear layer, with a surface structure being formed in the cork covering.
  • the surface structure is created in the cork by embossing after applying a wear layer.
  • the cork covering is preferably a pressed cork and this preferably has a density between 400 and 550 kg/m 3 , in particular a density between 450 and 500 kg/m 3 .
  • a smaller density leads to a lower durability of the cork for a floor covering and it can develop unevenness more quickly.
  • the pressed cork has a higher density, the comfort properties of the cork suffer.
  • comfort properties include, for example, the low heat conduction, which leads to warm feet, and the cushioning, which protects joints and effectively reduces impact noise.
  • the wear layer is created before structuring, it is unaffected by the surface structures during its production. Since the structures are then created using a non-material-removing process, the wear layer is not significantly influenced by the introduction of the structuring.
  • a cold stamping i.e. a surface structure that is created by locally applying a high pressure at room temperature or at a slightly higher temperature, preferably a maximum of 70 ° C.
  • Certain wear layers are not very sensitive to temperature. These are in particular wear layers below a warm-applied, highly viscous wear layer or below the paint, which determines the level of gloss. A cork panel to which such a low temperature-sensitive wear layer was applied at the time of embossing can be embossed at up to 150°C.
  • embossing and in particular such cold embossing, leads to a permanent and clearly contoured structure on a cork covering was unexpected, but was reproducibly found in tests.
  • the experiments also showed that an embossing and in particular cold stamping of a cork covering works independently of the presence of the wear layer or other similar layers and leads to a permanent and clearly contoured structure.
  • the tests found that different layers and also the wear layer are not destroyed or damaged by embossing or cold stamping.
  • the pressure used for embossing depends, among other things, on the size and the type and duration of the embossing as well as the temperature.
  • the exact composition of the cork material also influences the required pressure.
  • the pressure is preferably between 3 and 10 kg/cm 2 .
  • the pressure used in the individual case is preferably determined on a test piece through a series of tests.
  • the embossability of pressed cork is significantly better than that of natural raw cork. Furthermore, the embossability increases as the size of the pressed cork particles decreases. With a preferred average cork particle diameter between 1 and 3 mm, a printable and embossable cork covering can be produced, for example. Furthermore, the density of the cork particles seems to influence the embossability: Denser cork particles and press cork, which is made from denser cork particles, can be embossed better and hold the structures better than less dense cork particles and press cork, which contains them. However, since very dense cork particles only show the typical comfort characteristics of cork to a limited extent, a compromise should be found. Cork particle granules with a bulk density between 80 and 100 kg/m 3 , particularly preferably 90 kg/m 3 , are preferably used for an embossable cork covering.
  • the surface structure is deeper than 0.2 mm, preferably between 0.3 and 0.5 mm deep.
  • These preferred depths are deeper than the thickness of the wear layer. This is actually an embossing of the cork covering and not an embossing of the wear layer on an unstructured cork covering.
  • the wear layer adapts to the course and structure of the cork covering.
  • the printing layer can be a layer of ink, which is applied directly to the cork covering or an intermediate layer.
  • the print layer does not have to cover its base completely.
  • the printing layer can also be a printed fleece or printed paper or a similar carrier.
  • the carrier can be placed directly on the cork covering or separated from the cork covering by intermediate layers.
  • the carrier is preferably connected to the layer immediately underneath it by an adhesive. Like the layer of ink, the carrier can also only be applied piecemeal.
  • the wear layer is a wear layer that is highly viscous when applied. Such a wear layer must be smoothed after application, otherwise a flat surface will not be created.
  • the wear layer is preferably a moisture-curing polyurethane.
  • the material of the wear layer is preferably a material with a dynamic viscosity of more than 5000 mPa s at the application temperature.
  • the wear layer contains high-strength particles, in particular ceramic particles.
  • the wear layer preferably also contains abrasion-resistant particles such as corundum or Keramil. Ideally, these particles should be evenly distributed in the carrier material and maintain this even distribution even while the wear layer is hardening.
  • a wear layer made of a comparatively liquid material cannot keep the particles in suspension during curing.
  • the particles sink down or rise, depending on the relative density of particles and wear layer material.
  • the material of the wear layer can spread so thinly that the particles are no longer covered by the material. However, this reduces the abrasion resistance of the layer.
  • Filler layers may be necessary above and below the wear layer to create smooth surfaces.
  • a highly viscous wear layer can keep the particles evenly distributed during curing, but even without particles, a highly viscous wear layer can be advantageous compared to using layers that are more liquid when applied (e.g. in terms of abrasion resistance and impact resistance).
  • the interaction between the highly viscous wear layer and the roller with which the wear layer is typically applied creates unsightly streaks and patterns on the panels. These are removed using a smoothing roller or smoothing or similar methods.
  • automatic smoothing is only possible without any problems if the wear layer surface is flat. Therefore, highly viscous wear layers can only be applied to unstructured surfaces or only to surfaces whose structures are either significantly smaller than the wear layer thickness or so large that the smoothing tool can reach into them. When the desired depth of the structures is more than 0.2 mm, both criteria are not met. Therefore, only embossing after application and smoothing of the wear layer allows the use of a highly viscous wear layer.
  • a highly viscous wear layer can hold and contain larger particles than a conventional wear layer.
  • the particles preferably have an average particle diameter of more than 90 ⁇ m, in particular 100 ⁇ m or more when they are held in a highly viscous wear layer.
  • Abrasion-resistant particles in other wear layers are preferably smaller and, for example, between 1 and 30 ⁇ m in diameter.
  • the particle size can be determined, for example, by sieving or by light scattering.
  • “highly viscous” means in particular a dynamic viscosity of more than 5000 mPa s, namely the usual one Application temperature of the wear layer.
  • the manufacturers of the wear layer materials specify the application temperature. It is typically between 100°C and 150°C.
  • a possible material that is suitable for the wear layer of cork panels and is highly viscous is moisture-curing polyurethane.
  • a viscosity of 8000 +/- 2000 mPa s at 140 ° C was measured on the day of production using the Brookfield HBTD Viscometer at 10 rpm.
  • the viscosity is preferably measured with this device and this rotational speed, preferably also on the day of production of the wear layer material.
  • the cork panel further comprises a cork base, preferably 1 to 2 mm thick, which is located on the carrier plate opposite the cork covering.
  • Such a cork base provides a counterweight that balances the tensions caused by cork coverings and coatings on the top. This prevents the panels from buckling.
  • the cork base can also dampen impact sound and protect the support plate from moisture.
  • the carrier board is a medium-density fiberboard (MDF) or a high-density fiberboard (HDF) or a waterproof board.
  • MDF medium-density fiberboard
  • HDF high-density fiberboard
  • carrier plates are stable and are not damaged during the embossing process. They can be easily connected to the cork covering and the cork base. A groove and a tongue can be formed from them on their edges, which allows a click connection or a conventional, glued connection.
  • the cork covering has a thickness of more than 0.5 mm and preferably between 0.5 and 3 mm.
  • the cork covering should be thicker than the desired embossed structures. At the same time, unnecessarily thick panels should also be avoided. Thicknesses are between 0.5 and 3 mm a good compromise and also allows the panels to feel like cork flooring, for example in terms of comfort underfoot and heat conduction.
  • the material of the cork covering is a heavily pressed mixture of cork granules and a PU adhesive.
  • the material of the cork covering has a density of more than 450 kg/m3, in particular a density between 600 and 700 kg/ m3 .
  • Such a cork covering is strong enough and sufficiently closed to be able to serve as a floor covering and to allow printing or the inclusion of a decorative layer.
  • the density is not so high that the user loses the feeling of a cork panel.
  • the cork covering springs back, which is why it is so comfortable to walk on.
  • the cork granules have grain sizes between 0.5 and 3 mm, in particular between 1 and 3 mm, in diameter.
  • the PU adhesive is advantageously a mixture of a very hard and elastic adhesive.
  • the very hard adhesive preferably has a dynamic viscosity greater than 4500 mPa s and the elastic adhesive has a dynamic viscosity of less than 2500 mPa s during processing.
  • the cork base consists of cork granules that are less compacted than the cork covering.
  • the cork base should not be printed. It may therefore have a coarser structure of its own. At the same time, the cork base should provide good thermal insulation and provide good impact sound absorption. Both are achieved using less compacted cork granules.
  • the cork base serves as a counterweight.
  • the carrier plate provides the necessary stability and preferably has connecting elements such as tongue and groove or click fasteners.
  • the cork covering creates the cork floor feel and provides a sufficiently smooth surface to allow further layers to be applied.
  • the primer helps to apply the printing ink in a durable manner and allows the colors to come into their own.
  • the print layer is used for optical design.
  • the further priming creates an optimal connection between the print layer and the wear layer.
  • the wear layer is highly viscous and contains evenly distributed particles.
  • the UV primer allows the following layers of paint to be applied well and evenly to the wear layer. Since the primer cures under UV light, the curing time can be chosen deliberately.
  • the Layers of varnish determine the level of gloss of the panels. Since the embossing is only applied after all layers have hardened, all layers have the desired thicknesses. None of the coatings collect in depressions or require special, complex application.
  • the wear layer here is less viscous when applied and can therefore also be produced with a smaller thickness. It is therefore embedded in two filling layers, the lower one of which is sanded before the wear layer is applied. So she can be a part of the Hold ceramic particles and the base coat. The filling layer on top enables a flat surface and further embeds the ceramic particles. The sanding of this second filling layer allows good adhesion to the subsequent paint finishes, which in turn determine the level of gloss of the cork panels. Again, the late embossing allows all layers to be applied easily and evenly.
  • the cork covering is coated. Additional layers can be added between the cork covering and the wear layer. Layers of material that is liquid during application are preferably applied with rollers or nozzles or brushes, with the material hardening after application. Hardening can occur through cooling, through contact with the ambient air, through UV irradiation and the like or combinations thereof. Different materials may have different viscosity when applied. Viscosity can also change with age and environmental conditions, particularly temperature. Typical materials that are liquid when applied are varnishes, paints, filling materials and wear layer materials.
  • a material that is solid when applied can be present in material webs that are placed on top.
  • a solid material can be, for example, a fleece for stabilization or decorative paper.
  • the cork covering is embossed together with all the layers it supports.
  • Embossing occurs through the local application of pressure.
  • the embossing preferably creates structures deeper than 0.2 mm.
  • the cork covering is applied to a carrier board before being coated with a wear layer.
  • the cork covering is applied to the backing board using a common adhesive and the application of pressure and possibly heat.
  • a durable and flat connection is created between the cork covering and the carrier board.
  • the cork covering is mechanically stabilized.
  • the embossing process can weaken the material of the cork covering locally and therefore breaks or tears more easily during further processing.
  • the carrier plate stabilizes the possibly locally weakened cork covering.
  • the further processing step of applying it to the carrier plate after the embossing process is eliminated. This prevents damage to parts of the cork panel.
  • the cork covering can be applied to the carrier board after being coated with the wear layer but before embossing.
  • the embossing of the coated cork covering takes place at a temperature between 20 ° C and 150 ° C, preferably, especially in the case of a highly viscous wear layer, at a temperature between 20 ° C and 90 ° C, in particular at a temperature of 50-70 °C.
  • the grain covering or the wear layer preferably does not heat up if the room temperature is greater than or equal to 20°C. This protects the different coatings, some of which can be liquefied by heat and/or behave differently under heat. However, the different layers can generally tolerate temperatures of up to 90°C, in particular up to 70°C, and therefore this temperature range can be used.
  • the cork covering can be embossed at room temperature or temperatures up to 90°C, in particular up to 70°C, and retains the structures created in this way over time.
  • a permanent structuring of the cork covering can therefore be created using the method according to the invention.
  • Figure 1 shows a well-known cork panel. It consists of a surface coating 1, a cork covering 2, a carrier plate 3 and a cork base 4. The thickness of the layers is not shown to scale here.
  • the cork base 4, for example, has a thickness of 1 to 2 mm and consists of slightly compacted cork.
  • the carrier plate 3 is an MDF or HDF board or a waterproof board with a thickness of, for example, 7 mm.
  • the cork covering 2, for example, consists of highly compressed cork granules with grain sizes between 0.5 and 3 mm in diameter. After a hot one When pressed with PU adhesive, the cork covering 2 has a density of 600-700 kg/m3. The thickness of the cork covering 2 is, for example, 3 mm.
  • the surface coating 1 in turn has a thickness of less than one millimeter, for example 0.1 mm.
  • the connections between the cork base 4, the carrier plate 3 and the cork covering 2 are made here using an adhesive.
  • the surface coating 1 is applied in liquid form to the cork covering 2 and adheres directly to it. Alternatively, the surface coating 1 can also be solid and glued to the cork covering.
  • the surface coating 1 can consist of several layers and these can have different viscosities when applied, some can be liquid and others can be solid.
  • the surface coating 1 includes a wear layer.
  • Figure 2 shows an embossed cork panel according to the invention. It in turn consists of a surface coating 1, a cork covering 2, a carrier plate 3 and a cork base 4. In terms of structure, this panel is the same as the one in Figure 1 shown and described.
  • the embossing 5 deforms the cork covering 2 locally.
  • the surface coating 1 essentially retains its thickness and is undamaged. This also applies in particular to a decorative layer or a print layer, which can be part of the surface coating 1, and the wear layer.
  • Figure 3 shows the detailed structure of a cork panel according to the invention. For the sake of clarity, an unembossed excerpt can be seen here. The thickness of the layers shown is not to scale. Figure 3 shows a possible, detailed structure of a cork panel Figure 1 or 2 .
  • the panel again has a cork base 4, a support plate 3 and a cork covering 2.
  • the surface coating 1 is composed of a large number of layers:
  • a first primer 6.1 serves as a base for a digital print 7. This in turn covered by a transparent primer 6.2, which serves as a base for the abrasion layer 10.
  • the abrasion layer 10 is highly viscous when applied and becomes solid when it hardens. Compared to the second one, it contains in Figure 4 shown, embodiment, large ceramic particles or other particles that reduce abrasion. Thanks to the high viscosity when applied, the particles are evenly distributed and neither sink to the bottom of the layer nor rise. The abrasion layer 10 thus effectively reduces abrasion on the surface of the panels.
  • the abrasion layer 10 is an example of a wear layer.
  • a further primer 6.3 which can be UV-curing, is applied to the abrasion layer 10.
  • This serves as a base for a series of, in this case three, paint layers 8.1, 8.2 and 8.3.
  • the lacquer layers 8.1, 8.2 and 8.3 determine, among other things, the level of gloss of the surface.
  • Figure 4 shows the detailed structure of a second embodiment of a cork panel according to the invention. For the sake of clarity, an unembossed excerpt can be seen here. The thickness of the layers is not to scale. Figure 4 shows a second possible, detailed structure of a cork panel Figure 1 or 2 .
  • the panel again has a cork base 4, a carrier plate 3 and a cork covering 2.
  • the surface coating 1 is now composed of a large number of layers:
  • a first primer 6.1 serves as a base for a digital print 7. This is in turn covered by a transparent UV-curing primer 6.3, which serves as a base for a filler 9.1.
  • the filler 9.1 is sanded after application and hardening.
  • a paint wear layer 11 with abrasion-resistant particles is applied to the sanded filler 9.1.
  • the particles contained are rather smaller than those in the abrasion layer 10 (from the embodiment of Figure 3 ) included. Since the paint of this paint wear layer 11 is relatively liquid, some of the particles protrude from the paint wear layer 11 after curing.
  • Another filler 9.2 compensates for these unevenness and completely covers the particles.
  • the filler 9.2 is also sanded and then covered with layers of varnish 8.1 and 8.2, which determine the level of gloss.
  • the top layer of paint 8.2 can now be sanded again.
  • the paint wear layer 11 represents a second example of a wear layer.
  • the embossing can preferably be done with rollers or plates.
  • the pattern of the embossing is preferably coordinated with the decorative layer or the digital print 7.
  • random embossed patterns can also be created by placing a suitable bulk material such as pins or balls on the panel surface and then pressing it onto the surface using a plate. If embossing is to take place at a temperature other than the current room temperature, a heat or coolant can be passed through lines into embossing plates or embossing rollers.
  • the layer structure shown can be easily modified: There are paints that do not require a primer and when using them, the primer layers shown here will be omitted. Likewise, the paint 8.1, 8.2 and 8.3 can consist of more or fewer layers or can be omitted entirely. It can be different varnishes, the same varnish but treated differently, or identical layers.
  • Digital printing 7 primarily serves aesthetic purposes. Instead of a print 7 directly on the surface of the panel, a paper that is attractively designed or a fleece that can be printed or colored can also be glued. These are examples of decorative layers. Such a decorative layer can in turn be covered by a digital print 7. Primers or fillers or similar layers can be attached between these two layers. However, the wear layer is preferably above all decorative layers and prints 7. However, it is also possible not to use any print or decorative layer at all and to show the cork covering 2 directly or to dye another layer such as a primer in a desired color. The print or decorative layer can also only be present in pieces.
  • the wear layer can also be designed without ceramic particles or other abrasion-resistant particles. If abrasion-resistant particles are used, corundum or silicon carbide, for example, are also suitable in addition to ceramic.
  • the particles preferably have an average particle diameter of more than 90 ⁇ m, in particular 100 ⁇ m or more.
  • the particles are preferably smaller and, for example, between 1 and 30 ⁇ m in diameter.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Floor Finish (AREA)
  • Laminated Bodies (AREA)

Claims (15)

  1. Panneau de liège, lequel comprend une plaque de support, une garniture de liège et une couche d'usage, sachant que dans la garniture de liège une structure de surface est constituée,
    sachant que la couche d'usage est soit hautement visqueuse lors de l'application et est lissée après l'application afin de créer une surface plane et sachant qu'une couche d'usage de ce type soit lissée après l'application et avant le gaufrage ,
    soit
    sachant que la couche d'usage est formée d'un matériau plus fluide et de particules résistantes à l'abrasion, sachant que le matériau plus fluide ne peut maintenir en suspension les particules résistantes à l'abrasion et sachant que cette couche d'usage est entourée au-dessus et en dessous par une couche de remplissage pour permettre une surface lisse, et
    caractérisé en ce que la structure de surface est produite par gaufrage après une application de la couche d'usage et en ce que le gaufrage n'est pratique qu'après l'application et le durcissement de la couche d'usage.
  2. Panneau de liège selon la revendication 1, caractérisé en ce que la structure de surface est plus profonde que 0,2 mm, de préférence d'une profondeur se situant entre 0,3 et 0,5 mm.
  3. Panneau de liège selon l'une quelconque des revendications 1 à 2, caractérisé en ce qu'une couche de pression se trouve entre la garniture de liège et la couche d'usage.
  4. Panneau de liège selon l'une quelconque des revendications 1 à 3, caractérisé en ce que concernant la couche d'usage, il s'agit d'un polyuréthane durcissant à l'humidité et en particulier, en ce que concernant la couche d'usage, il s'agit d'un matériau avec une viscosité dynamique de plus de 5000 mPas à la température d'application.
  5. Panneau de liège selon l'une quelconque des revendications 1 à 4, caractérisé en ce que la couche d'usage contient des particules hautement résistantes, en particulier des particules de céramique.
  6. Panneau de liège selon l'une quelconque des revendications 1 à 5, caractérisé en ce que le panneau de liège comprend en plus une sous-couche de liège, de préférence de 1 à 2 mm d'épaisseur, laquelle se trouve opposée à la garniture de liège sur la plaque de support.
  7. Panneau de liège selon l'une quelconque des revendications 1 à 6, caractérisé en ce que la plaque de support est une plaque en fibres de bois (MDF) de densité moyenne ou une plaque de fibres de bois à forte densité (HDF) ou une plaque à l'épreuve de l'eau.
  8. Panneau de liège selon l'une quelconque des revendications 1 à 7, caractérisé en ce que la garniture de liège comporte une épaisseur de plus de 0,5 mm et de préférence entre 0,5 mm et 3 mm.
  9. Panneau de liège selon l'une quelconque des revendications 1 à 8, caractérisé en ce que le matériau de la garniture de liège est un mélange fortement compressé de granulat de liège et d'un adhésif à base de PU, en particulier, en ce que le matériau de la garniture de liège comporte une densité de plus de 450 kg/m3, en particulier une densité se situant entre 600 et 700 kg/m3.
  10. Panneau de liège selon la revendication 9, caractérisé en ce que le granulat de liège comporte une granulométrie se situant entre 0,5 et 3 mm, en particulier entre 1 et 3 mm de diamètre.
  11. Panneau de liège selon l'une quelconque des revendications 6 à 10, caractérisé en ce que la sous-couche de liège est composée d'un granulat de liège moins fortement compacté en tant que garniture de liège.
  12. Panneaux de liège selon l'une quelconque des revendications 1 à 11, caractérisés en ce qu'ils ont la structure de bas en haut suivante :
    a. une sous-couche de liège,
    b. une plaque de support,
    c. une garniture de liège,
    d. une couche de fond,
    e. une impression numérique,
    f. un autre couche de fond,
    g. une couche d'usage à partir d'un matériau, lequel est hautement visqueuse lors de l'application et peut contenir de ce fait des particules de céramiques plus grosses sans que celles-ci ne modifient essentiellement leur répartition dans la couche d'usage pendant le séchage,
    h. un apprêt résistant aux UV,
    i. une ou plusieurs couches de laque, qui déterminent le degré de brillant,
    sachant qu'un gaufrage n'est mis en oeuvre qu'après le durcissement de toutes ces couches.
  13. Panneau de liège selon l'une quelconque des revendications 1 à 11, caractérisé en ce qu'il a la structure de bas en haut suivante :
    a. une sous-couche de liège,
    b. une plaque de support,
    c. une garniture de liège,
    d. une couche de fond,
    e. une impression numérique,
    f. un apprêt résistant aux UV,
    g. une couche de remplissage avec polissage,
    h. une couche d'usage de laque de base avec particules de céramique,
    i. une couche de remplissage avec polissage et une surface plane entre et sur les particules de céramique,
    j. deux laquages, si possible partiellement polis pour mettre au point le degré de brillant,
    sachant qu'un gaufrage n'est introduit qu'après le durcissement de toutes ces couches.
  14. Procédé de fabrication de panneaux de liège comprenant les étapes suivantes :
    a. préparation d'une plaque de support,
    b. application d'une garniture de liège sur la plaque de support,
    c. revêtement de la garniture de liège avec
    i. soit une couche d'usage d'un matériau de couche d'usage hautement visqueuse et lissage de la couche d'usage,
    ii. soit incorporation d'une couche d'usage moins visqueuse dans deux couches de remplissage et ponçage de la couche de remplissage inférieure avant l'application de la couche d'usage,
    d. durcissement de la couche d'usage,
    caractérisé en ce que le procédé comprend également l'étape suivante :
    e. gaufrage de la garniture de liège revêtue à un moment ultérieur.
  15. Procédé de fabrication de panneaux de liège selon la revendication 14, sachant que le gaufrage de la garniture de liège revêtue a lieu à une température se situant entre 20°C et 150°C, de préférence, en particulier pour une couche d'usage hautement visqueuse, à une température se situant entre 20°C et 90°C, en particulier à une température de 50-70°C.
EP16767182.5A 2015-09-10 2016-09-07 Sol en liège structuré Active EP3347211B8 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH001311/2015A CH711510B1 (de) 2015-09-10 2015-09-10 Strukturiertes Korkpaneel.
PCT/EP2016/071081 WO2017042215A1 (fr) 2015-09-10 2016-09-07 Sol en liège structuré

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EP3347211B1 true EP3347211B1 (fr) 2023-12-20
EP3347211B8 EP3347211B8 (fr) 2024-01-24

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IT202300006828A1 (it) * 2023-04-06 2024-10-06 Giovanni Luca Pintus Pannelli a base di sughero con effetto pietra
DE102023123888A1 (de) * 2023-09-05 2025-03-06 Meisterwerke Schulte Gmbh Plattenförmiges Bauelement und ein Verfahren zu dessen Herstellung

Citations (1)

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Publication number Priority date Publication date Assignee Title
EP2910385A1 (fr) * 2014-02-25 2015-08-26 Akzenta Paneele + Profile GmbH Procédé de fabrication de panneaux décoratifs

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Publication number Priority date Publication date Assignee Title
DE102007043204A1 (de) 2007-09-11 2009-03-12 Guido Schulte Fußboden-, Wand- oder Deckenpaneele sowie Verfahren zu deren Herstellung
SG186004A1 (en) * 2007-11-19 2012-12-28 Ceraloc Innovation Belgium Fibre based panels with a wear resistance surface
US8171691B1 (en) * 2011-03-03 2012-05-08 Tower Ipco Company Limited Floor member with cork substrate
DE102011002131A1 (de) * 2011-04-18 2012-10-18 Guido Schulte Fußbodenelement
DE102012112562B4 (de) * 2012-12-18 2019-06-06 Guido Schulte Fußbodenelement
US20140199495A1 (en) 2013-01-11 2014-07-17 Floor Iptech Ab Digital printing and embossing

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2910385A1 (fr) * 2014-02-25 2015-08-26 Akzenta Paneele + Profile GmbH Procédé de fabrication de panneaux décoratifs

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CH711510B1 (de) 2024-10-31
EP3347211A1 (fr) 2018-07-18
WO2017042215A1 (fr) 2017-03-16
CH711510A1 (de) 2017-03-15
EP3347211B8 (fr) 2024-01-24

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