EP2202056A1 - Panneau de plancher et procédés de fabrication des panneaux de plancher - Google Patents

Panneau de plancher et procédés de fabrication des panneaux de plancher Download PDF

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Publication number
EP2202056A1
EP2202056A1 EP08022366A EP08022366A EP2202056A1 EP 2202056 A1 EP2202056 A1 EP 2202056A1 EP 08022366 A EP08022366 A EP 08022366A EP 08022366 A EP08022366 A EP 08022366A EP 2202056 A1 EP2202056 A1 EP 2202056A1
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EP
European Patent Office
Prior art keywords
substrate
floor panel
component
panels
floor
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.)
Withdrawn
Application number
EP08022366A
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German (de)
English (en)
Inventor
Martin Segaert
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.)
Unilin Industries BVBA
Original Assignee
Unilin Industries BVBA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Unilin Industries BVBA filed Critical Unilin Industries BVBA
Priority to EP08022366A priority Critical patent/EP2202056A1/fr
Publication of EP2202056A1 publication Critical patent/EP2202056A1/fr
Withdrawn legal-status Critical Current

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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
    • 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
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F2201/00—Joining sheets or plates or panels
    • E04F2201/01—Joining sheets, plates or panels with edges in abutting relationship
    • E04F2201/0107—Joining sheets, plates or panels with edges in abutting relationship by moving the sheets, plates or panels substantially in their own plane, perpendicular to the abutting edges
    • E04F2201/0115—Joining sheets, plates or panels with edges in abutting relationship by moving the sheets, plates or panels substantially in their own plane, perpendicular to the abutting edges with snap action of the edge connectors
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F2201/00—Joining sheets or plates or panels
    • E04F2201/01—Joining sheets, plates or panels with edges in abutting relationship
    • E04F2201/0153—Joining sheets, plates or panels with edges in abutting relationship by rotating the sheets, plates or panels around an axis which is parallel to the abutting edges, possibly combined with a sliding movement

Definitions

  • This invention relates to a floor panel and to methods for manufacturing panels, more particularly floor panels.
  • the invention relates to floor panels of the type comprising at least a substrate and a top layer provided on the substrate, wherein the substrate substantially is composed of a composite material comprising at least two components, on the one hand, a first component, which is fiber-shaped, and, on the other hand, a second component acting as a binding agent for said first component.
  • Such floor panels as such are widely known, for example, from WO 97/47834 , wherein a wood-based fiberboard is applied for the substrate, more particularly MDF or HDF (Medium Density Fiberboard or High Density Fiberboard), and for the top layer one or more paper layers provided on this substrate are applied.
  • MDF or HDF Medium Density Fiberboard or High Density Fiberboard
  • HDF Medium Density Fiberboard or High Density Fiberboard
  • such fiberboard consists of pressed wood fibers, which are interconnected, for example, by means of melamine formaldehyde glue (MF) or melamine urea formaldehyde glue (MUF).
  • MF melamine formaldehyde glue
  • UMF melamine urea formaldehyde glue
  • these boards show the disadvantage that they are very sensitive to moisture penetration, as they are porous and as the wood fibers absorb moisture.
  • the intake of moisture by the wood fibers leads to a swelling of the substrate first manifesting itself at the edges of
  • Moisture penetration also plays an important role in the production of such floor panels. Namely, when the semi-finished panels take up moisture at one or more of their edges, they may bend or warp in the plane, such that subsequent treatments of the edge are tolerance-sensitive. For example, when realizing profiled edge regions comprising, for example, coupling means, by means of milling tools, relatively much material must be removed in order to obtain straight panels again after the machining treatment. Due to this large material removal, it is possible that edge finishing, such as chamfers, which are provided before milling, will disappear over a portion of the edge concerned. Therefore, it is difficult, if not impossible, with the existing substrates to form chamfers at one or more edges of the floor panels prior to the milling process.
  • warping of panels poses a problem in particular with narrow panels having, for example, a width of less than 20 cm, and pose an even larger problem with panels having a width of less than 12 cm. It is clear that warped panels also lead to problems when interconnecting or installing them.
  • the present invention relates to offering a floor panel or a panel with an alternative substrate, whereby preferably new possibilities can be offered for applications of such panels. According to preferred embodiments of the invention, it also aims at a panel with a substrate which is better resistant against moisture penetration than traditional MDF or HDF, and/or can offer a remedy for one or more disadvantages of the state of the art.
  • the invention according to its first aspect relates to a floor panel of the type comprising at least a substrate and a top layer provided on the substrate, wherein the substrate substantially is composed of a composite material comprising at least two components, with the characteristic that, on the one hand, a first of said two components consists of mineral fibers, and, on the other hand, a second of said two components acts as a binding agent for said first component.
  • said mineral fibers show less absorption of water or other moisture than this is the case with wood fibers or other organic fibers.
  • said composite material consists for at least 80 percent of said two components, such that the positive effect of the presence of mineral fibers can be maximized.
  • a fiber is applied consisting for at least 20 weight percent of Si02, and preferably consists for at least 10 weight percent of Al2O3.
  • Such fiber is excellently resistant against the occurrence of fungus or bacteria growth and hardly takes up moisture or water.
  • a fiber can be applied which is spun from rock, such as volcanic rock.
  • rock such as volcanic rock.
  • Such fiber is known as such because it is already applied, for example, in insulation wool, such as rockwool.
  • thermo-hardening synthetic material for the second component a polycondensation glue is applied.
  • this synthetic material is chosen from the series of urea formaldehyde glue, melamine glue, melamine formaldehyde glue, methane diphenyl diisocyanate glue, phenol formaldehyde glue, resorcinol formaldehyde glue, resorcinol phenol formaldehyde glue and a mixture of one or more of the aforementioned glues.
  • thermo-hardening binding agents lead to obtaining a board which is easier to provide with a top layer.
  • a fiber is applied, which is covered with an agent promoting the adherence to the second component, such as silane.
  • said substrate shows a density of more than 500 kg/m 3 , or even of more than 750 kg/m 3 .
  • the substrate concerned also is sufficiently resistant against impact damages.
  • Such substrate can be obtained by pressing the respective mineral fibers and the respective binding agent to a board in a similar manner as it is the case with MDF or HDF.
  • the fibers prior to the press treatment, are provided with binding agent and strewn to form a mat, the thickness of which is at least 30 times larger than the thickness of the final board to be obtained.
  • this mat is de-aired, wherein also the thickness of the mat already is reduced to a certain extent.
  • the mat In a second, subsequent step, the mat then is increasingly pressed and heated until approximately the final thickness of the board remains. After possible cooling of the board, it may or may not be ground at one or both flat sides.
  • the production process of the boards, in particular said press treatments preferably is performed in a continuous manner. However, it is not excluded that one works with presses which open and close or so-called cycle presses. It is clear that by such production process preferably larger boards are obtained, from which, by dividing them, substrates for several final panels can be obtained. Such dividing may take place prior or subsequently to applying said top layer.
  • said top layer shows a printed motif, such as a wood motif or a stone motif.
  • this motif depicts only one wooden plank, only one stone or tile, respectively, per panel.
  • a printed motif can have been obtained in a variety of possible manners.
  • the printed motif is applied on a material sheet taken up into said top layer.
  • a printing process by means of printing cylinders, which, for example, is performed on a paper web, wherein said material sheet then is obtained by dividing this paper web and subsequently is taken up into the top layer as a decor layer.
  • DPL type Direct Pressure Laminate
  • a wear-resistant layer can be provided above the decor layer, wherein this wear-resistant layer, apart from hard particles, then preferably also comprises a material layer provided with resin, such as a paper layer.
  • a material layer provided with resin, such as a paper layer.
  • said substrate comprises a thermo-hardening synthetic material as a second component.
  • the printed motif is obtained at least partially by means of a print performed directly on the substrate, whether or not by the intermediary of primer layers.
  • Directly performing a print on a substrate for forming panels showing a motif is known as such, for example, from US 1,971,067 , US 3,173,804 , US 3,554,827 , US 3,811,915 , WO 01/48333 , WO 01/47724 , US 2004/0026017 , WO 2004/042168 , EP 1 872 959 or DE 195 32 819 A1 .
  • one or more primer layers can be provided on the substrate, and/or one or more finishing layers can be provided above the print.
  • finishing layers may comprise, for example, transparent or translucent layers of synthetic material forming a protective layer above the, whether or not printed, motif and may comprise, for example, wear-resistant particles, such as aluminum oxide.
  • this protective layer contains a material sheet, such as a paper sheet, which, for example, is provided with a synthetic material, such as amino resin.
  • any printing technique can be applied for forming the print, such as a printing technique, wherein one or more printing cylinders are applied, or a digital printing technique, wherein one or more inkjet print heads are applied.
  • the floor panel is rectangular and, at least at two opposite edges, is provided with coupling means allowing that two of such floor panels can be connected to each other.
  • such coupling means substantially may be performed as a tongue in groove connection, which can effect a locking in a vertical direction perpendicular to the plane of the connected floor panels.
  • the coupling means also are provided with additional locking elements, by which also a locking can be obtained in a horizontal direction perpendicular to the connected edges and in the plane of the connected floor panels.
  • Coupling means of the type allowing that between said floor panels a connection is obtained in a vertical direction perpendicular to the plane of the connected floor panels as well as in a horizontal direction perpendicular to the connected edges and in the plane of the connected floor panels are known as such, for example, from WO 97/47834 .
  • said coupling means consist of profiles milled directly into the substrate.
  • the inventors have found that a substrate which comprises mineral fibers most surprisingly can be milled with a high quality without an adaptation of the usual milling tools which are applied when processing wood fiberboard.
  • competitive milling speeds can be obtained, even of more than 100 m/min or more than 150 m/min.
  • the floor panel of the invention has a width of less than 20 cm and still better of less than 12 cm. From the preceding, it is clear that the floor panel of the invention has particular advantages in these embodiments. As the floor panel of the invention can be made less sensitive to moisture penetration, this floor panel in fact may show a lesser tendency to warping in its plane, such that the advantages, which may be created thereby, are not present or only present to a lesser extent.
  • the length of the floor panels can vary between 40 cm and 140 cm. It is clear that the invention is not restricted to these dimensions.
  • the floor panels also may be made longer, such as up to 250 cm, and/or wider, such as up to 35 cm.
  • the floor panel of the invention has a chamfer at one or more edges.
  • the chamfer may be realized, according to a first possibility, by removing a material portion at the edge concerned, such as is known as such from EP 1 290 291 . It is clear that exposing a portion of the substrate by this material removal at the edge does not induce particular problems in the floor panel of the invention as a result of possible moisture penetration.
  • the obtained surface of the chamfer may or may not be provided with a separate covering.
  • the chamfer can be realized by deforming the substrate and/or the upper surface of the panel, or the larger board from which the panel is obtained, for example, by means of a press treatment.
  • such impressed chamfer can be formed before further edge treatment, for example, by means of milling tools, is applied.
  • the floor panel of the invention in fact can show a smaller risk of warping by moisture penetration, such that the risk that the already formed chamfer is removed by a subsequent milling process, for example, for forming at least a portion of the coupling means, can be minimized.
  • the invention further, in an independent manner, relates to a method for manufacturing covered panels, more particularly floor panels, wherein it is started from a basic board or a basic panel upon which a top layer with a printed motif is provided, wherein the method for forming the top layer comprises at least a step wherein, by means of a press treatment under increased temperature, a material sheet is provided on the substrate, with the characteristic that for said basic board or basic panel, a composite material is applied comprising at least two components, on the one hand, a first component consisting of mineral fibers, and, on the other hand, a second component consisting of a thermo-hardening polycondensation glue and acting as a binding agent for said first component.
  • this method can be applied for manufacturing the floor panels of the first aspect or the preferred embodiments thereof and that the method possibly can also show one or more of the following steps:
  • the composite material of the invention is excellently suitable for applying thereon a top layer by means of a press treatment and heat. This suitability can be explained, on the one hand, in that the presence of thermo-hardening material as a binding agent minimizes a possible softening of the substrate, and, on the other hand, in that the composite material can be provided with an almost smooth surface, as a consequence of which possible unevennesses hardly exert an influence on the quality of the provided top layer.
  • the invention further independently relates to a method for manufacturing panels, more particularly floor panels, of the type comprising at least a substrate and a top layer provided on the substrate, wherein these panels are rectangular and profiled edge regions are formed at least at two opposite edges, wherein the method for forming said profiled edge regions comprises at least a step wherein the substrate is processed at the edges concerned by means of a milling process, with the characteristic that for said basic board or basic panel, a composite material is applied comprising at least two components, on the one hand, a first component consisting of mineral fibers, and, on the other hand, a second component consisting of a polycondensation glue and acting as a binding agent for said first component.
  • this method can be applied for forming the floor panels of the first aspect or the preferred embodiments thereof and that the method possibly can comprise still one or more of the following steps:
  • Figure 1 represents an oblong and rectangular floor panel 1, which, as becomes clear from figure 2 , is of the type comprising a substrate 2 and a top layer 3 provided on the substrate 2.
  • the top layer 3 shows a wood motif, the nerves 4 of which extend in the longitudinal direction of the floor panel 1.
  • the floor panel 1 forms an imitation of a single wood part or wooden plank. Of course, it is not excluded that the floor panel 1 should imitate several wood parts, as may be the case with the design of a so-called two- or three-plank.
  • Said coupling means 9 are also provided with locking elements 12, wherein these locking elements 12 in coupled condition of two of such floor panels 1 realize a locking or connection in horizontal direction H1.
  • the represented coupling means 9 can be realized as profiles directly milled into the substrate 2.
  • Figure 2 represents that the coupling means 9 and locking elements 12 of the example allow that two of such floor panels 1 can be coupled at their edges at choice by means of a turning movement W around the edge 5-6 concerned or by a horizontal shifting movement T of the floor panels 1 towards each other.
  • the invention is not restricted to this kind of coupling means 9 and locking elements 12. It is also possible to apply coupling means 9 allowing that two of such floor panels 1 can be coupled only in one of the above-mentioned manners or allowing that two of such floor panels 1 can also be coupled to each other in still another manner, for example, by means of a substantially downward movement.
  • floor panels 1 which can be connected at their edges 5-6 and/or 7-8 by means of a substantially downward movement, reference is made to DE 20 2008 008597 U1 .
  • this panel 1 comprises a substrate 2 which substantially is composed of a composite material comprising at least two components, amongst which a first component consisting of mineral fibers.
  • this relates to a substrate 2 in which the mineral fibers are distributed homogenously or at least quasi-homogenously.
  • Figure 2 clearly shows that the coupling means 9 can be made in one piece with this substrate 2 and that on this substrate 2, a top layer 3 consisting of one or more material layers 13 can be provided, wherein this top layer 3 represents a motif, in this case, a wood motif.
  • the floor panel 1 of the invention can be provided with lowered edges or chamfers 14 at one or more edges 5-6-7-8.
  • Such chamfers 14 are represented in figure 2 in dashed line and here show the form of bevels. It is noted that the quality of a chamfer surface of the substrate 2, said surface possibly being obtained by milling, allows covering this surface with a separate decorative layer consisting of a transfer film. Other decorative layers, such as lacquer or ink layers, are not excluded, either.
  • Figure 3 represents that for manufacturing the floor panels 1 of figure 1 or 2 , it may be started from larger basic boards 15, which, in a press device 16, are provided with a top layer 3 and possibly an underlay 17.
  • the basic board 15 concerned which as such substantially is constructed of a composite material comprising at least two components, amongst which a component consisting of mineral fibers, is brought, together with the material layers 13 to be provided thereon and/or there below, between a lower press plate 18 and upper press plate 19, where they will be connected to each other under the influence of increased temperature and pressure.
  • a top layer 3 is formed on the basis of a decor paper 21 provided with resin 20, which forms a decor layer 22, and a paper layer 23 provided with resin 20, which extends as a protective layer 24 above the decor layer 22.
  • a motif is provided by means of a print 25, for example, performed by means of printing cylinders.
  • a paper layer 23 provided with resin 20 is provided, which compensates possibly created residual tensions in the top layer 3 and/or the substrate 2.
  • top layer 3 either in the protective layer 24 or in the decor layer 22 or in both, further also hard particles can be present imparting a certain wear resistance to the floor panel 1.
  • ceramic particles such as aluminum oxide granules, with an average grain size of less than 200 ⁇ m can be applied. Such particles are not represented here.
  • top layers with hard particles and possibilities for manufacturing panels with such top layers reference is made to WO 2007/144718 .
  • floor panels 1 or semi-finished products for manufacturing such floor panels 1 then can be obtained at least by subdivision from the larger basic boards 15. Further, it is clear that other covered panels than floor panels 1 can be obtained in a similar manner. Examples of such other covered panels are furniture panels, ceiling panels, wall panels and the like.
  • Figure 4 represents a variant wherein the mineral fibers are concentrated in the material zones 26 situated at one or more edges 5-6-7-8 of the final floor panels 1, whereas the remaining material of the substrate 2 is composed differently, for example, shows the usual composition of a MDF or HDF board.
  • the presence of the mineral fibers on the edges 5-6-7-8 of the floor panel 1 is advantageous, for example, for counteracting the effects of moisture penetration.
  • a vapour-tight layer can be present in the form of a laminate layer or top layer 3 on the basis of one or more material layers 13 containing amino resin.
  • a practically entirely waterproof floor panel 1 can be obtained, whereas the cost price thereof is limited.
  • this is also possible vice versa, namely, that the mineral fibers are concentrated in the bulk of the final floor panel 1.
  • Figure 5 shows that the material zone 26 comprising the material fibers preferably extends so deep in the substrate 2 that the entire coupling means 9 can be formed therein.
  • Figure 6 represents a variant, wherein the mineral fibers are situated in a material zone 26 which, in the final floor panel 1, concentrates at one or more upper edges 27 of the floor panel 1. As the upper edges 27 are the most sensitive for the effects of possible moisture penetration, a considerable improvement may already be obtained with the embodiment of figure 6 .
  • Figure 7 in its turn represents a variant wherein the mineral fibers are situated in a material zone 26 which, in the final floor panel 1, concentrates at the height of the actual coupling means 9, in other words, at the height of the aforementioned tongue 10 and groove 11.
  • Such embodiment may be combined, for example, with a separate sealing of the upper edges, said sealing preferably being simple to apply, in order to obtain a good result.
  • Such separate sealing is not represented here, however, may consist, for example, of a hardened substance.
  • WO 2008/078181 and WO 2007/113676 for examples of such substances and possibilities for applying them thereon, reference is made to WO 2008/078181 and WO 2007/113676 .
  • the mineral fibers are concentrated in a material zone 26 extending in layers over substantially the entire substrate 2.
  • this layer extends, for example, close enough to the surface of the substrate 2, a similar embodiment as that from figure 6 can be obtained in a simple manner, namely, wherein the mineral fibers are concentrated at least at the upper edges 26 of the panels 1.
EP08022366A 2008-12-23 2008-12-23 Panneau de plancher et procédés de fabrication des panneaux de plancher Withdrawn EP2202056A1 (fr)

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Application Number Priority Date Filing Date Title
EP08022366A EP2202056A1 (fr) 2008-12-23 2008-12-23 Panneau de plancher et procédés de fabrication des panneaux de plancher

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08022366A EP2202056A1 (fr) 2008-12-23 2008-12-23 Panneau de plancher et procédés de fabrication des panneaux de plancher

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EP2202056A1 true EP2202056A1 (fr) 2010-06-30

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Cited By (30)

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US20120027957A1 (en) * 2010-06-30 2012-02-02 Flooring Technologies Ltd. Method for the refinement of a panel and apparatus for carrying out the same
WO2012115497A1 (fr) * 2011-02-21 2012-08-30 Arroyo Bernal Jesus Federico Mélange, couche de pierre et plaque, à base de particules de roche volcanique, à utiliser dans la construction et la décoration, et procédé d'élaboration associé
WO2012136188A1 (fr) * 2011-04-05 2012-10-11 Guido Schulte Revêtement de sol et procédé de fabrication de ce revêtement
US8475928B2 (en) 2011-01-31 2013-07-02 Neocantera Board S.A. De C.V. Rock sheet and plate mix based on volcanic rock particles useful for building and decoration
WO2013165307A1 (fr) * 2012-04-30 2013-11-07 Ceraloc Innovation Ab Procédé pour former un motif décoratif sur un élément d'un matériau à base de bois
WO2014065953A1 (fr) * 2012-10-22 2014-05-01 Us Floors, Inc. Planches de revêtement de couvre-sol et de paroi manipulées pour être étanches à l'eau
US20140227503A1 (en) * 2011-09-28 2014-08-14 Titan Wood Limited Panels of medium density fibreboard
US9080330B2 (en) 2010-05-10 2015-07-14 Flooring Industries Limited, Sarl Floor panel
CN104963482A (zh) * 2015-08-04 2015-10-07 安徽扬子地板股份有限公司 除醛实木复合地板及其制造方法
US9163414B2 (en) 2010-05-10 2015-10-20 Flooring Industries Limited, Sarl Floor panel
US9409382B2 (en) 2012-11-28 2016-08-09 Valinge Innovation Ab Method of producing a building panel
US9605168B2 (en) 2014-01-31 2017-03-28 Ceraloc Innovation Ab Digital print with water-based ink
EP3222795A1 (fr) * 2016-03-23 2017-09-27 Li & Co AG Élement de revetement mural ou de sol
US9994010B2 (en) 2014-01-24 2018-06-12 Ceraloc Innovation Ab Digital print with water-based ink on panel surfaces
US10017950B2 (en) 2011-08-26 2018-07-10 Ceraloc Innovation Ab Panel coating
US10059084B2 (en) 2014-07-16 2018-08-28 Valinge Innovation Ab Method to produce a thermoplastic wear resistant foil
US20180258651A1 (en) * 2010-05-10 2018-09-13 Flooring Industries Limited, Sarl Floor panel
US10233656B2 (en) 2016-08-26 2019-03-19 Quickstyle Industries Inc. Densified foam core (DFC) tile with imitation grout line
EP3456900A1 (fr) 2017-09-15 2019-03-20 Unilin, BVBA Un élément de sol pour un recouvrement de sol, un recouvrement de sol et un procédé pour la fabrication d'un élément de sol
US10328680B2 (en) 2013-10-23 2019-06-25 Ceraloc Innovation Ab Method of forming a decorative wear resistant layer
US10369837B2 (en) 2012-04-30 2019-08-06 Valinge Innovation Ab Method for forming a decorative design on an element of a wood-based material
US10544595B2 (en) 2016-08-26 2020-01-28 Quickstyle Industries Inc. Tile with protected imitation grout line
US10899166B2 (en) 2010-04-13 2021-01-26 Valinge Innovation Ab Digitally injected designs in powder surfaces
US11149442B2 (en) 2016-08-26 2021-10-19 Quickstyle Industries Inc. Tile with imitation grout line
US11186997B2 (en) 2016-03-24 2021-11-30 Valinge Innovation Ab Method for forming a décor on a substrate
US11203224B2 (en) 2018-08-30 2021-12-21 Interface, Inc. Digital printing for flooring and decorative structures
WO2022148754A1 (fr) * 2021-01-05 2022-07-14 I4F Licensing Nv Panneau décoratif et revêtement de sol décoratif constitué de ces panneaux
NL2027270B1 (en) * 2021-01-05 2022-07-22 I4F Licensing Nv Decorative panel and decorative floor covering consisting of said panels
US11668099B2 (en) 2009-12-22 2023-06-06 Flooring Industries Limited, Sarl Panel, covering and method for installing such panels
US11891815B2 (en) 2017-09-28 2024-02-06 Flooring Industries Limited, Sarl Board and method for manufacturing a board

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