EP2269744B1 - Panneau en matière dérivée du bois doté d'un revêtement de surface - Google Patents

Panneau en matière dérivée du bois doté d'un revêtement de surface Download PDF

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Publication number
EP2269744B1
EP2269744B1 EP10183178.2A EP10183178A EP2269744B1 EP 2269744 B1 EP2269744 B1 EP 2269744B1 EP 10183178 A EP10183178 A EP 10183178A EP 2269744 B1 EP2269744 B1 EP 2269744B1
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EP
European Patent Office
Prior art keywords
lacquer
layers
layer
varnish
panel
Prior art date
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Active
Application number
EP10183178.2A
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German (de)
English (en)
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EP2269744A2 (fr
EP2269744A3 (fr
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.)
Swiss Krono Tec AG
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Swiss Krono Tec AG
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Priority claimed from DE102004026739A external-priority patent/DE102004026739A1/de
Priority claimed from DE102005001363A external-priority patent/DE102005001363A1/de
Priority claimed from DE102005002059A external-priority patent/DE102005002059A1/de
Priority to EP17184789.0A priority Critical patent/EP3281709A1/fr
Priority to PL10183178T priority patent/PL2269744T3/pl
Application filed by Swiss Krono Tec AG filed Critical Swiss Krono Tec AG
Priority to EP17184788.2A priority patent/EP3281708A1/fr
Publication of EP2269744A2 publication Critical patent/EP2269744A2/fr
Publication of EP2269744A3 publication Critical patent/EP2269744A3/fr
Publication of EP2269744B1 publication Critical patent/EP2269744B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/06—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/06—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to wood
    • B05D7/08—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to wood using synthetic lacquers or varnishes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/06—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation
    • B05D3/061—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation using U.V.
    • B05D3/065—After-treatment
    • B05D3/067—Curing or cross-linking the coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/06—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation
    • B05D3/068—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation using ionising radiations (gamma, X, electrons)
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/50—Multilayers
    • B05D7/52—Two layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/50—Multilayers
    • B05D7/56—Three layers or more

Definitions

  • the invention relates to a panel made of wood material with a surface coating.
  • Wood materials that are processed into panels are usually surface-coated.
  • the surface coating only brings about the actual usability of the panels, since they give decor, water resistance, abrasion resistance, chemical resistance, and possibly existence against algae, fungi and / or insects.
  • the surface is usually coated by coating the panel with a resin-impregnated decorative paper.
  • AT 351 744 describes painting a particle board, whereby a first coat of paint is referred to as a primer.
  • the primer is applied to both surfaces, top and bottom of the chipboard.
  • a second coat of paint follows.
  • the second layer of lacquer is applied on one side only to the top of the chipboard.
  • the paint application is at least 50 to 500 g / m 2 .
  • the process proposed here does without decorative paper. The aim is to save expensive plant parts such as presses.
  • the synthetic resin mainly proposed here for the lacquer layers is melamine, one of the most expensive lacquer components.
  • lacquer layers The application of optically satisfactory lacquer layers has hitherto required that abrasive layers be provided in the lacquer structure that cover this first lacquer layer after the application and curing of a first lacquer layer.
  • the grinding layers are largely or completely sanded down in order to obtain a smooth surface for the next layer of lacquer. This multi-layer procedure with intermediate sanding is necessary in order to obtain visually appealing paintwork.
  • UV-curable paints helps here.
  • An example of the use of UV-curable coatings is shown by US 4,439,480 ,
  • the panel made of wood-based material is coated with a primer and, based on it, with at least two layers of lacquer.
  • the total amount of lacquer applied, the layer thickness is less than 120 ⁇ m, preferably less than 80 ⁇ m, particularly preferably less than 60 ⁇ m, advantageously less than 45 ⁇ m, particularly advantageously less than 30 ⁇ m.
  • the lacquer which essentially determines the usage properties of the panel, is preferably applied in two or more layers.
  • the above-mentioned layer thickness of up to 120 ⁇ m is not exceeded in total. This measure significantly improves the surface coating of the panel.
  • no undesirable structure is shown in the surface, so no rolling structure when rolling the lacquer.
  • undesirable changes in the appearance of the lacquer layer are avoided, which can hardly be avoided when applying thick lacquer layers.
  • the application of several thin layers of lacquer improves the resilience or the resistance of the lacquer layer overall, the coating becomes more durable.
  • a thin lacquer layer is understood to be a lacquer layer of up to 20 ⁇ m, preferably of up to 15 ⁇ m, advantageously of up to 10 ⁇ m.
  • the at least two thin lacquer layers are preferably applied in such a way that in each case one layer that has already been applied is gelled and then the next layer is already applied.
  • the application of a sanding layer and the subsequent sanding of the individual layers of paint before applying the next layer can be dispensed with because the individual layers are thin and, if necessary. by gelling - can be applied sufficiently smoothly.
  • the quality, especially the smoothness of the thin lacquer layer also meets high optical and mechanical quality requirements.
  • the lacquer layer applied in a thin layer can be cured or reacted with ultraviolet light (UV light) or by means of electro-beam curing ESD; the latter can also be used without the use of photoinitiators.
  • UV light ultraviolet light
  • electro-beam curing ESD electro-beam curing
  • the surface coating has at least one functional component which is integrated in at least one lacquer layer of the two lacquer layers, or as an outer layer or under the at least two lacquer layers or as between at least two layers of lacquer arranged layer can be applied.
  • the at least one functional component combines well with the material of the lacquer layer. If the at least one functional component is applied as a layer, the at least one functional layer bonds well with the lacquer layer or layers.
  • UV-curing paints are extremely tolerant of functional components. The curing and building up of a uniform surface coating is well possible according to the invention despite different combinations of functional components or layers of lacquer and other substances.
  • the surface coating can also have two or more different functional components or layers.
  • An example is a layer for impact sound insulation and a layer for improving fire resistance or two coloring layers and a layer of lacquer, to which a functional component is added to adjust the absorption of UV light.
  • the functional component is often incorporated into at least one lacquer layer of the two lacquer layers, in particular if this forms the outer layer of the surface coating.
  • the scratch resistance, the abrasion, the degree of gloss, but also properties such as an antibacterial effect or dissipative properties of the panel both by selecting the suitable UV or radiation-curing lacquer but also by selecting suitable functional components such as.
  • a main area of application for panels is in addition to the use as a ceiling or wall covering or worktop and also as a floor covering.
  • the suitability as a floor covering essentially depends on whether the surface of the panel is sufficiently resistant to the abrasion caused by walking on the floor or the wear and tear of chair casters and other objects. So that the usage parameters such as abrasion properties, chair roll resistance, stain resistance and the like of panels can be compared, EN 13329 defines usage classes for laminate, i.e. for wood-based panels with a surface coating are made of decorative paper.
  • the usage classes distinguish between the use of panels for residential purposes and for commercial purposes.
  • the suitability as a worktop e.g. B. in laboratories or workshops, requires special wear resistance, which is verified by special tests, in particular by EN 310, 319, 323, 324-1, 438 with requirements for abrasion, scratch resistance, susceptibility to cracking, lightfastness, stain resistance and behavior towards Steam, pot bases and cigarette burns as well as the prEN 717 and DIN 52612.
  • the decorative paper is dispensed with in connection with the surface coating. This is replaced by the extremely low amount of paint applied.
  • the panels according to claim 1 can be assigned using the EN 13329 usage classes, which in any case meet the demands on living demands.
  • the product according to claim 1 is tested and evaluated using the same test methods that DIN EN 13329 prescribes for laminate. So z. B. for panels that are provided with the thin lacquer layer according to the invention, the rating "usage class 31" (commercial area) according to EN 13329, provided that corundum is embedded in the thin lacquer layer. This is to be regarded as an extraordinary economic advantage, since a high resistance to abrasion is achieved with minimal use of paint. Likewise, the high requirements of the standards are met with the surface coating according to the invention, the z. B. are specified for worktops.
  • At least one functional layer which, however, does not have to lie on the surface of the coated panel, is made of an elastomer.
  • an elastomer In particular, ethylene vinyl acetate (EVA) or other suitable polyolefins or plastic mixtures which contain EVA or at least one other polyolefin, but also polyurethanes, in particular thermoplastic polyurethanes (TPU), are suitable for this.
  • EVA ethylene vinyl acetate
  • TPU thermoplastic polyurethanes
  • TPU thermoplastic polyurethanes
  • Panels provided with such functional components or layers are particularly suitable for sports halls.
  • the soundproofing properties are particularly effective, for example, on wall or ceiling panels whose surface is enlarged.
  • the elastomer is applied in a layer thickness of 0.1 mm up to 10 mm. Even a single layer of an elastomer contributes significantly to the impact sound insulation. However, it is also possible to arrange several layers, which may be separated by lacquer layers or other functional layers. The bond between primer, elastomer and paint layer is good. It also holds heavy loads, e.g. B. commercial use.
  • UV-curing lacquers can be used particularly advantageously to apply different lacquers, in particular matt lacquers and gloss lacquers in layers, these layers covering the surface of the panel in sections. Matt varnish is applied in sections as a functional layer. A layer of gloss varnish is applied over this. Even this simple two-layer surface coating enables optical effects.
  • Layers of matt lacquer and gloss lacquer are advantageously arranged in their layer sequence in such a way that optically perceptible structures are formed. These structures are characterized by the fact that viewers perceive supposedly three-dimensional patterns. These plastic-looking patterns from a series of gloss and matt lacquer layers can be used to design fantasy decors, but also to replicate natural decors. Here, in particular, the simulation of pore structures has to be considered.
  • An alternative to the production of optically perceptible structures can be implemented by introducing at least two functional layers.
  • a first functional layer which partially covers the surface of the panel and which repels a coloring coating
  • at least one second layer which consists of a coloring coating which partially covers the surface of the panel.
  • a first functional layer with waxes or oils can be applied in sections, which prevents the application of paint or a coloring coating on the surface of the wood material.
  • a UV-absorbing substance can be used as the functional component.
  • bodies or substances with dimensions in the nano range, ie with dimensions up to 950 nm, are suitable.
  • Substances or compounds that absorb UV light are mostly metal compounds, in particular metal oxides such as zinc oxide, for which it is known that they reflect or absorb UV light. This substance is preferably or acts transparently. It is further preferred if this functional component is used in the final lacquer layer or is arranged on or near the surface of the surface coating. It has a special protective effect if it is applied above color-giving coatings or coatings that can be changed by UV light.
  • a further embodiment of the panel provides that a flame-retardant substance or one that increases the fire resistance of the wood-based material is used as the functional component.
  • Flame retardant or fire resistance improving substances are known per se. These include, for example, water glass or other inorganic substances such as vermiculite. Transparent substances are also preferably used here.
  • a substance or a mixture of substances is used as the functional component with which the sliding resistance of the surface of the wood material is to be adjusted.
  • Typical substances are wax or oils or mixtures of these, but also mineral substances, especially fine-grained sand.
  • This functional layer is preferably arranged as the outer layer of the surface.
  • at least one functional component is introduced into the surface coating of a panel, with which the haptic properties of the surface of the wood material or of the coated panel can be adjusted.
  • Waxes, oils or mixtures thereof and mineral substances such as B. fine-grained sand, which are used as a so-called matting agent to give the surface of the panel a velvety feel.
  • This functional component can be applied both as an outer layer of the surface coating. But it can also be arranged within the layer structure, since the overall surface coating is generally so thin that, for. B. layers arranged between the lacquer layers are effective for adjusting the haptics.
  • a topcoat with a predetermined degree of gloss is used as the functional component, which influences the degree of gloss of the surface coating or the surface of the panel.
  • a substance can also be applied as a functional layer, with which the antistatic properties of the surface of the wood material can be adjusted.
  • the antistatic properties of the surface of the wood-based material can be adjusted by adding soot, although the coloring is very limited.
  • surfactants can be added as a functional component to promote water retention in the paint.
  • conductive fabrics can be used, which in turn affects the appearance of the surface. It is advantageous to use transparent, conductive particles as the functional component or layer.
  • Transparent conductive particles are produced, for example, by applying metal oxides to carrier particles.
  • a mica particle that is doped with tin and antimony oxide is suitable.
  • Transparent particles can have a plate-like or spherical shape. Good conductivity and transparency as well as optimal conductivity are achieved with particles that have a diameter of up to 25 ⁇ m, preferably up to 15 ⁇ m, preferably up to 10 ⁇ m.
  • the electrically conductive, transparent particle is contained in only one layer of a multilayer synthetic resin structure on an overlay or a plate-shaped wood material.
  • a dissipative surface is built up on an overlay or a plate-shaped wood material if at least one layer, that is, up to 40 g / m 2 of a synthetic resin mixed with transparent, conductive particles is applied.
  • a layer that is, up to 40 g / m 2 of a synthetic resin mixed with transparent, conductive particles is applied.
  • up to 25 g / m 2 particularly preferably up to 15 g / m 2 , advantageously up to 10 g / m 2 are sufficient.
  • the overall layer structure of the respective surface can easily exceed 100 g / m 2 in the case of a multilayer structure. Nevertheless, only one layer of the synthetic resin to which particles have been added is sufficient to obtain a surface which has a significantly improved conductivity.
  • a known measure for increasing the abrasion resistance is the introduction of corundum with the paint. This measure also increases the abrasion resistance in panels according to claim 1, which is an essential parameter for determining the usage classes in accordance with DIN EN 13329. At most, the grain size of the corundum should be chosen finer, in order to adapt to the thinner paint layer. Corundum is preferably introduced as a functional component in a lacquer layer that is not the outermost lacquer layer.
  • the surface coating of the panel can be given a plastic deformation after the lacquer has been applied and hardened. Relief-like embossments that are permanent are introduced into the fused or hardened surface coating under pressure and, if appropriate, at elevated temperatures. Surprisingly, it has been found that the surface of a surface-coated workpiece can still be plastically deformed without the surface coating being damaged. The seal does not flake off, it does not tear, it absorbs deformations of a depth that are suitable for reproducing natural materials. With the embossing can be achieved that the surface of a surface-coated workpiece is perceived as a close replica of natural substances, since touching the surface conveys exactly the structure that is known from natural substances. This perception is supported in most cases by a coordinated color design. For example, a wood-based panel can reproduce certain types of wood by applying one or more layers of paint. The plastically deformed surface of the sealed panel then complements the pore structure familiar from the real wood model.
  • the at least two layers of paint are applied directly to the primer.
  • a surface coating is technically fully functional, but it rarely meets aesthetic requirements. Therefore at least one, usually at least two layers of paint are applied as a functional layer between the primer and the lacquer layer.
  • bonding agents or filler layers can also be applied to the primer in connection with the paint application in order to improve the surface for the paint application.
  • the paint usually adheres very well to the primer.
  • the adhesion of the paint to the paint can be improved by adding at least 5% by weight (% by weight) of paint to the paint before it is applied. Possibly. the lacquer can only be added to individual or all layers of paint if more than one layer of paint is applied.
  • a panel made of wood-based material one of which, for use, e.g. B. intended for walking or working Side is provided with a surface coating, on the opposite side, usually referred to as the underside, is coated at least in sections with lacquer.
  • This varnish which is applied at least in sections, replaces the previously used papers or veneers, which were used in return.
  • a counter-pull is necessary to compensate for the forces occurring in connection with the surface coating, in particular shrinkage stresses occurring during drying or curing of the surface coating.
  • a lacquer layer applied at least in sections on the underside of the panel is sufficient to compensate for the tension generated by the surface coating, so that the finished coating Panel has not warped after the curing of all coating processes on the top and bottom.
  • the varnish can be applied to the underside of the panel in very small quantities. It is sufficient up to 120 g / m 2 , preferably up to 80 g / m 2 , particularly preferably up to 60 g / m 2 , advantageously up to 45 g / m 2 , preferably up to 30 g / m 2 . Especially with small application quantities, it can happen that no closed lacquer layer is formed. A closed layer of lacquer is not important here, rather it is a question of the shrinkage that the lacquer applied to the underside develops during curing. Lacquers are known and available that shrink very differently within a wide range when applied and hardened on wood-based materials.
  • a varnish is selected, the shrinkage of which is suitable to compensate for the deformation which the respective surface coating produces.
  • the forces that occur can also be calculated, but it has proven to be easier to determine the suitable paint for the underside of a panel by simple tests.
  • the paint applied to the underside can be chosen as desired. It can be a solvent-based or water-based lacquer that dries or cures when exposed to heat. However, it can also be a lacquer that cures by means of UV light or electron beam curing.
  • a device for coating, in particular painting, panels has means for Conveying panels to and from a processing unit and means for applying a coating, in particular a coating, and means for partially or completely curing a coating, in particular a coating, the means for applying a coating and the means for partially or completely Hardening of a coating in that they are arranged directly one behind the other are combined to form a processing unit. At least two processing units are advantageously provided.
  • the processing units are very compact in comparison to the prior art, since devices for grinding layers of lacquer can be dispensed with.
  • the immediately successive arrangement of the means for applying coatings, as a rule rollers, which apply varnish to the surface of the panel, and means for partially or completely curing these layers enables the coating application to be closely coordinated with its fixation.
  • Coatings of the surface of a panel regularly require a fixation, usually referred to as curing or reacting. As described in connection with the panel according to the invention, it can also involve partial curing or reaction.
  • a typical use of the means for curing is the gelling of UV-curing lacquers that were applied to the surface of a panel immediately beforehand.
  • Means for curing are therefore preferably designed as UV-light-emitting devices or as devices for electron-beam curing, but it can also be known devices in which curing takes place by the application of heat.
  • At least two of these processing units are provided; the arrangement of at least three processing units is preferred, for example for applying a two-layer base coat or a base coat and a functional layer, e.g. B. a layer of an elastic plastic material with low Shore hardness, and a layer of a topcoat.
  • a functional layer e.g. B. a layer of an elastic plastic material with low Shore hardness, and a layer of a topcoat.
  • the device can be designed for working speeds of at least 35 m / min, preferably at least 50 m / min, particularly preferably at least 70 m / min.
  • a commercially available primer is rolled onto a hardboard.
  • the order quantity is approx. 14 g / m 2 .
  • This primer fills unevenness, smoothes fibers and improves the water-repellent properties of the hardboard.
  • the primer is essentially an aliphatic polyurethane dispersion (80 to 90% by weight), which in conjunction with an acrylate copolymer emulsion (between 10 and 15% by weight) and small amounts of water (less than 2% by weight) as well as conventional additives for stabilization and defoaming (between 2 and 5% by weight) is applied to the hardboard.
  • a first and a second layer of lacquer are then applied to the dried primer.
  • 30 g / m 2 of a lacquer which cures under UV light are first applied, then curing is initiated under the action of UV light, but is not completed.
  • the second lacquer layer is then applied to the partially hardened first lacquer layer. This layer of lacquer is also exposed to UV light, but is not fully cured.
  • Corundum is added to the first two layers of paint.
  • the paint is composed as follows: The proportion of corundum is 20 to 25% by weight.
  • An aliphatic polyurethane acrylate makes up 15 to 25% by weight. 45 to 55% by weight makes up a highly functional, aliphatic polyester acrylate. 2 to 10% by weight of additives contribute, for example for defoaming, stabilizing the paint, curing faster or preventing discoloration of the paint. Varnishes of this composition are commercially available.
  • a UV-curing top coat with 12 g / m 2 is applied to these first two layers of paint.
  • the UV light that is subsequently used finally hardens all three applied layers of lacquer, which is easily possible due to the small overall application quantities.
  • the topcoat is composed in such a way that aliphatic, highly functional polyester acrylate takes up approx. 30 to 50% by weight, aliphatic polyurethane acrylate approx. 15 - 25% by weight, monomers are added with 5 to 15% by weight, silicate components make up approx. 5 to 20% by weight from and additives are added in amounts of 10 to 25% by weight.
  • Such varnishes are also commercially available.
  • This type of paint application ensures a particularly resistant surface coating.
  • the panels produced from the hardboard coated in this way are suitable for use as flooring. With an abrasion of 2,400, they can be assigned to abrasion class AC 3 and thus to usage class 31 (commercial use) according to EN 13329.
  • the coating of the panel described above is carried out by roller application. Both the primer is applied with a roller and the paint layers.
  • the rollers that apply the lacquer layers are each part of a processing unit, which in addition to the rollers is also assigned a UV light unit for gelling or curing the lacquer.
  • the first two processing units are designed in such a way that the application means, the UV light units, and the applied lacquer layer only gel. Only the UV light unit of the third processing unit causes the applied lacquer layers to harden completely.
  • the device according to the invention can, depending on the type of coating to be applied, be set to working speeds of 45 m / min or 55 m / min.
  • a commercially available primer is rolled onto a hardboard.
  • the order quantity is approx. 14 g / m 2 .
  • This primer fills in unevenness, smoothes fibers and improves the water-repellent properties of the hardboard.
  • the primer is essentially an aliphatic polyurethane dispersion (80 to 90% by weight), which in conjunction with an acrylate copolymer emulsion (between 10 and 15% by weight) and small amounts of water (less than 2% by weight) as well as conventional additives for stabilization and defoaming (between 2 and 5% by weight) is applied to the hardboard.
  • a first and a second layer of lacquer are then applied to the dried primer.
  • 30 g / m 2 of a lacquer which cures under UV light are first applied, then curing is initiated under the action of UV light, but is not completed.
  • the second lacquer layer is then applied to the partially hardened first lacquer layer. This layer of lacquer is also exposed to UV light, but is not fully cured.
  • Corundum is added to the first two layers of paint.
  • the paint is composed as follows: The proportion of corundum is 20 to 25% by weight.
  • An aliphatic polyurethane acrylate makes up 15 to 25% by weight. 45 to 55% by weight makes up a highly functional, aliphatic polyester acrylate.
  • Additives that contribute, for example, to defoaming, stabilizing the lacquer, curing faster or preventing discoloration of the lacquer contribute 2 to 10% by weight. Varnishes of this composition are commercially available.
  • a UV-curing top coat with 12 g / m 2 is applied to these first two layers of paint.
  • the UV light that is subsequently used finally hardens all three applied layers of lacquer, which is easily possible due to the small overall application quantities.
  • the topcoat is composed in such a way that aliphatic, highly functional polyester acrylate takes up approx. 30 to 50% by weight, aliphatic polyurethane acrylate approx. 15 - 25% by weight, monomers are added with 5 to 15% by weight, silicate components make up approx. 5 to 20% by weight from and additives are added in amounts of 10 to 25% by weight.
  • Such varnishes are also commercially available.
  • the panels produced from the hardboard coated in this way are suitable for use as flooring. They are with an abrasion from 2,400 can be assigned to wear class AC 3 and thus to use class 31 (commercial use) in accordance with EN 13329.
  • the coating of the panel described above is carried out by roller application. Both the primer is applied with a roller and the paint layers.
  • the rollers that apply the lacquer layers are each part of a processing unit, which in addition to the rollers is also assigned a UV light unit for gelling or curing the lacquer.
  • the first two processing units are designed in such a way that the application means, the UV light units, and the applied lacquer layer only gel. Only the UV light unit of the third processing unit causes the applied lacquer layers to harden completely.
  • the device according to the invention can, depending on the type of coating to be applied, be set to working speeds of 45 m / min or 55 m / min.
  • a primer (14 g / m 2 ) is applied to a high-density fiberboard (HDF) that is 7 mm thick.
  • HDF high-density fiberboard
  • TPU thermoplastic polyurethane
  • a color print is applied to the TPU, which is used to create a wood reproduction on the light wood-colored background of the TPU.
  • UV-curing lacquer is then applied in a layer thickness of 30 ⁇ m. Alternatively, three layers of UV-curing lacquer are applied in a layer thickness of 15 ⁇ m each.
  • the HDF board with three layers of UV lacquer meets the requirements for a commercially usable floor according to EN 13329 for use class 32.

Claims (7)

  1. Panneau en matière dérivée du bois doté d'un revêtement de surface, présentant
    - une couche de fond, qui est appliquée sur la matière dérivée du bois et
    - au moins deux couches de peinture, qui sont séchées au moyen d'une lumière UV ou d'un durcissement par faisceau d'électrons, dans lequel l'épaisseur de couche totale des deux couches de peinture au moins est inférieure à 120 µm,
    caractérisé en ce que
    au moins un composant fonctionnel est prévu,
    - qui est intégré dans une au moins des deux couches de peinture, ou
    - qui est appliqué en tant que couche extérieure fonctionnelle,
    - en tant que couche fonctionnelle disposée en dessous au moins des deux couches de peinture ou
    - en tant que couche fonctionnelle disposée entre au moins deux couches de peinture
    dans lequel des cires, des huiles ou des mélanges à base de celles-ci et/ou des substances minérales, notamment du sable à grains très fins servent de composant fonctionnel, lesquels permettent d'ajuster la résistance au glissement de la surface de la matière dérivée du bois et/ou les propriétés haptiques de la surface de la matière dérivée du bois.
  2. Panneau en matière dérivée du bois selon la revendication 1, caractérisé en ce que l'épaisseur de couche totale des deux couches de peinture au moins est de préférence inférieure à 80 µm, mieux encore inférieure à 60 µm, avantageusement inférieure à 45 µm, très avantageusement inférieure à 30 µm.
  3. Panneau en matière dérivée du bois selon la revendication 1, caractérisé en ce qu'au moins un composant fonctionnel est constitué d'un élastomère, de préférence d'éthylène-acétate de vinyle (EVA) ou d'un polyuréthane thermoplastique (PUT).
  4. Panneau en matière dérivée du bois selon la revendication 1, caractérisé en ce qu'une substance sert de composant fonctionnel, laquelle permet d'ajuster le degré de brillance de la surface de la matière dérivée du bois.
  5. Panneau en matière dérivée du bois selon la revendication 1, caractérisé en ce que la face opposée à la face du panneau pourvue d'un revêtement de surface est au moins recouverte de peinture par tronçons.
  6. Panneau en matière dérivée du bois selon la revendication 5, caractérisé en ce que le revêtement de peinture possède une densité pouvant atteindre 120 g/m2, de préférence 80 g/m2, mieux encore 60 g/m2, avantageusement 45 g/m2, de préférence 30 g/m2.
  7. Panneau en matière dérivée du bois selon la revendication 5 ou 6, caractérisé en ce qu'une peinture se rétractant fortement est appliquée, dont le retrait est apte à compenser la déformation générée par le revêtement de surface.
EP10183178.2A 2004-05-28 2005-05-30 Panneau en matière dérivée du bois doté d'un revêtement de surface Active EP2269744B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP17184788.2A EP3281708A1 (fr) 2004-05-28 2005-05-30 Panneau en matériau dérivé du bois
EP17184789.0A EP3281709A1 (fr) 2004-05-28 2005-05-30 Panneau en matériau dérivé du bois
PL10183178T PL2269744T3 (pl) 2004-05-28 2005-05-30 Panel z płyty z tworzywa drzewnego z powłoką powierzchniową

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
DE102004026739A DE102004026739A1 (de) 2004-05-28 2004-05-28 Paneel aus Holzwerkstoff mit Oberflächenbeschichtung
DE102004027757 2004-06-08
DE102005001363A DE102005001363A1 (de) 2005-01-11 2005-01-11 Gedruckte Lack-Poren
DE102005002059A DE102005002059A1 (de) 2005-01-14 2005-01-14 Holzwerkstoff mit ableitfähiger Oberfläche
PCT/EP2005/005812 WO2005116361A1 (fr) 2004-05-28 2005-05-30 Panneau en materiau derive du bois presentant un revetement de surface
EP05746316.8A EP1756381B2 (fr) 2004-05-28 2005-05-30 Panneau en materiau derive du bois presentant un revetement de surface

Related Parent Applications (3)

Application Number Title Priority Date Filing Date
EP05746316.8A Division EP1756381B2 (fr) 2004-05-28 2005-05-30 Panneau en materiau derive du bois presentant un revetement de surface
EP05746316.8A Division-Into EP1756381B2 (fr) 2004-05-28 2005-05-30 Panneau en materiau derive du bois presentant un revetement de surface
EP05746316.8 Division 2005-05-30

Related Child Applications (4)

Application Number Title Priority Date Filing Date
EP17184789.0A Division EP3281709A1 (fr) 2004-05-28 2005-05-30 Panneau en matériau dérivé du bois
EP17184789.0A Division-Into EP3281709A1 (fr) 2004-05-28 2005-05-30 Panneau en matériau dérivé du bois
EP17184788.2A Division EP3281708A1 (fr) 2004-05-28 2005-05-30 Panneau en matériau dérivé du bois
EP17184788.2A Division-Into EP3281708A1 (fr) 2004-05-28 2005-05-30 Panneau en matériau dérivé du bois

Publications (3)

Publication Number Publication Date
EP2269744A2 EP2269744A2 (fr) 2011-01-05
EP2269744A3 EP2269744A3 (fr) 2011-08-10
EP2269744B1 true EP2269744B1 (fr) 2019-12-18

Family

ID=34970252

Family Applications (4)

Application Number Title Priority Date Filing Date
EP17184788.2A Withdrawn EP3281708A1 (fr) 2004-05-28 2005-05-30 Panneau en matériau dérivé du bois
EP17184789.0A Withdrawn EP3281709A1 (fr) 2004-05-28 2005-05-30 Panneau en matériau dérivé du bois
EP10183178.2A Active EP2269744B1 (fr) 2004-05-28 2005-05-30 Panneau en matière dérivée du bois doté d'un revêtement de surface
EP05746316.8A Active EP1756381B2 (fr) 2004-05-28 2005-05-30 Panneau en materiau derive du bois presentant un revetement de surface

Family Applications Before (2)

Application Number Title Priority Date Filing Date
EP17184788.2A Withdrawn EP3281708A1 (fr) 2004-05-28 2005-05-30 Panneau en matériau dérivé du bois
EP17184789.0A Withdrawn EP3281709A1 (fr) 2004-05-28 2005-05-30 Panneau en matériau dérivé du bois

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP05746316.8A Active EP1756381B2 (fr) 2004-05-28 2005-05-30 Panneau en materiau derive du bois presentant un revetement de surface

Country Status (7)

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EP (4) EP3281708A1 (fr)
AU (1) AU2005248066B2 (fr)
CA (1) CA2568440C (fr)
EA (1) EA014859B1 (fr)
ES (2) ES2771455T3 (fr)
PL (2) PL1756381T5 (fr)
WO (1) WO2005116361A1 (fr)

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Also Published As

Publication number Publication date
PL2269744T3 (pl) 2020-06-01
EA014859B1 (ru) 2011-02-28
AU2005248066A1 (en) 2005-12-08
EP3281709A1 (fr) 2018-02-14
WO2005116361A1 (fr) 2005-12-08
AU2005248066B2 (en) 2010-06-17
CA2568440A1 (fr) 2005-12-08
EP2269744A2 (fr) 2011-01-05
EP3281708A1 (fr) 2018-02-14
EA200602245A1 (ru) 2007-04-27
ES2407404T5 (es) 2021-08-26
ES2407404T3 (es) 2013-06-12
EP1756381B2 (fr) 2020-07-15
AU2005248066A2 (en) 2005-12-08
PL1756381T3 (pl) 2013-07-31
EP1756381B1 (fr) 2013-02-20
CA2568440C (fr) 2015-05-05
ES2771455T3 (es) 2020-07-06
EP1756381A1 (fr) 2007-02-28
EP2269744A3 (fr) 2011-08-10
PL1756381T5 (pl) 2020-11-16

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