NL2024806B1 - Panel and method of producing such a panel - Google Patents

Panel and method of producing such a panel Download PDF

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Publication number
NL2024806B1
NL2024806B1 NL2024806A NL2024806A NL2024806B1 NL 2024806 B1 NL2024806 B1 NL 2024806B1 NL 2024806 A NL2024806 A NL 2024806A NL 2024806 A NL2024806 A NL 2024806A NL 2024806 B1 NL2024806 B1 NL 2024806B1
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NL
Netherlands
Prior art keywords
panel
layer
core layer
core
tongue
Prior art date
Application number
NL2024806A
Other languages
Dutch (nl)
Inventor
Boon Sven
Luc Martine Baert Thomas
Van Poyer Tom
Original Assignee
Champion Link Int Corp
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 Champion Link Int Corp filed Critical Champion Link Int Corp
Priority to NL2024806A priority Critical patent/NL2024806B1/en
Priority to CN202010661690.0A priority patent/CN113202254A/en
Priority to EP21701812.6A priority patent/EP4097310A1/en
Priority to PCT/EP2021/052216 priority patent/WO2021152152A1/en
Application granted granted Critical
Publication of NL2024806B1 publication Critical patent/NL2024806B1/en

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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
    • E04F15/02044—Separate elements for fastening to an underlayer
    • 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
    • E04F15/102—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 of fibrous or chipped materials, e.g. bonded with synthetic resins
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
    • E04B9/001—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation characterised by provisions for heat or sound insulation
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
    • E04B9/04—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation comprising slabs, panels, sheets or the like
    • E04B9/0407—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation comprising slabs, panels, sheets or the like being stiff and curved
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/26—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups
    • E04C2/284—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups at least one of the materials being insulating
    • E04C2/288—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups at least one of the materials being insulating composed of insulating material and concrete, stone or stone-like material
    • E04C2/2885—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups at least one of the materials being insulating composed of insulating material and concrete, stone or stone-like material with the insulating material being completely surrounded by, or embedded in, a stone-like material, e.g. the insulating material being discontinuous
    • 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
    • E04F13/0862—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 composed of a number of elements which are identical or not, e.g. carried by a common web, support plate or grid
    • 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
    • E04F13/0875—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 a basic insulating layer and at least one covering layer
    • 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
    • E04F15/02038—Flooring or floor layers composed of a number of similar elements characterised by tongue and groove connections between neighbouring flooring elements
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/18—Separately-laid insulating layers; Other additional insulating measures; Floating floors
    • E04F15/20—Separately-laid insulating layers; Other additional insulating measures; Floating floors for sound insulation
    • E04F15/206—Layered panels for sound insulation

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

Abstract

The present invention relates to panel, in particular a floor panel, a wall panel, or a ceiling panel, comprising a core layer, comprising a mineral or a cementitious 5 material and at least one reinforcing layer situated in said core layer; wherein the panel, in particular the core layer, comprises a first pair of opposite edges, wherein a first edge of said first pair of opposing edges comprises a first coupling part, and wherein a second edge of said first pair of opposing edges comprises a complementary second coupling part, said coupling parts allowing a 10 plurality of panels to be mutually coupled, wherein the first coupling part comprises a sideward tongue extending in a direction substantially parallel to a plane defined by the panel, and wherein the second coupling part comprises a groove configured for accommodating at least a part of the sideward tongue of another panel, said groove being defined by an upper lip and a lower lip.

Description

Panel and method of producing such a panel The invention relates to a panel, in particular a floor panel, a wall panel, or a ceiling panel.
In the field of floor and wall coverings, panels based on wood materials or derivatives thereof are widely used as material for the main or core layer of the panel. An example is given in US patent 6,688,061. Major disadvantages of such panels are the hygroscopic nature of such wood-based materials, which affects the lifetime and durability of such panels; and the flammability of wood-based products. As an alternative, several thermoplastic materials can be used, such as polyvinyl chloride, which while being water resistant, present other disadvantages. Polyvinyl chloride (PVC) that is used for panels such as in patent CN 100419019, has a flexible quality. This requires a perfectly smooth and even surface of the substrate on which the panel covering is applied. If such is not the case, any unevenness will be visible through the panel as it conforms with the underlying substrate surface, which is a detrimental effect from an aesthetic point of view to the user. Furthermore, a floor panel using PVC as core material is susceptible to temperature changes in its ambient environment which will cause the vinyl! flooring to expand and contract with hot and cold fluctuations. PVC panels also generally do not pass fireproofing ASTM tests. There is clearly a general need in the field to develop a floor panel which while having waterproof and temperature-proof properties, can be produced with a relatively high bending strength leading to a relatively even (flat) upper surface. There is also a need in the field to develop a floor panel of which the thickness can be adjusted relatively easily during production, while maintaining sufficient strength of the panel. There is furthermore a need to develop a fireproof panel to allow these panels to be used in commercial environments.
it is known to use wall panels with a mineral based or cementitious material based core to reach fireproofing standards. However, despite the advantages these materials offer with respect to wood or thermoplastic materials, reinforcement layers that that are applied for reasons of dimensional stability, have an impact on their performance in various strength tests that are applicable to flooring.
In particular floor panels with a core based on a mineral or cementitious material such as gypsum or magnesium can comprise a reinforcing layer of fiberglass, polypropylene, nylon and the like, as is described for construction boards in US7255907, and for stone-wood flooring in WO2012061300.
These mineral panels, when combined with a reinforcing layer as described in the prior art, cannot feature a lockable tongue and groove connection at opposite edges of the panel to serve as part of a floating floor with interlocking coupling parts to prevent both horizontal as vertical movement. When combining this type of floor panel with a reinforcing layer of fiberglass, the structural integrity is weakened, resulting in fractures when engaging the lock and when put into its intended use, and in failure when tested to "ISO 4918 Resilient, textile and laminate floor coverings -- Castor chair test". Hence, existing art attempts to solve this through non-locking profiles with an insert as in US20170204616, a non-locking tongue and groove on adjacent sides as in US2011058611, or simply do not touch upon the technical problem presented in this invention, as in EP2060389. it is therefore an objective of the invention to provide a panel with a mineral based or cementitious material based core, lacking at least part of the disadvantages of prior art panels. The invention thereto proposes a panel, in particular a floor panel, a wall panel, or a ceiling panel, comprising a core layer, comprising a mineral or a cementitious material; at least one reinforcing layer situated in said core layer; wherein the panel, in particular the core layer, comprises a first pair of opposite edges, wherein a first edge of said first pair of opposing edges comprises a first coupling part, and wherein a second edge of said first pair of opposing edges comprises a complementary second coupling part, said coupling parts allowing a plurality of panels to be mutually coupled; wherein the first coupling part comprises a sideward tongue extending in a direction substantially parallel to a plane defined by the panel, and wherein the second coupling part comprises a groove configured for accommodating at least a part of the sideward tongue of another panel, said groove being defined by an upper lip and a lower lip, wherein at least one reinforcing layer extends in a direction substantially parallel to the plane defined by the panel, such that said reinforcing layer is situated at a level between 30 and 70 percent, more in particular between 40 and 60 percent, and preferably halfway, of the thickness from the top surface of the panel to a highest part of the top surface of the tongue, and/or the bottom surface of the panel to a lowest part of the upper surface of the lower lip.
Experimentation with different locations of a reinforcing layer within the structure of both tongue and groove gives conclusive evidence for optimal strengthening of the locking system, whilst maintaining structural integrity. The panel according to the present application meets industry standards on structural integrity, while the locking system is durable and does not easily break. The invention also relates to a (floor) panel, comprising a core layer, comprising a mineral or a cementitious material, at least one reinforcing element situated in said core layer, wherein the floor panel, in particular the core layer, comprises a first pair of opposite edges, said first pair of opposite edges comprising interlocking coupling parts allowing to mutually couple of plurality of floor panels to each other, wherein the interlocking coupling parts are formed as a tongue and a groove by local removal of material at the respective edge, and wherein the at least one reinforcing element is situated in the laminate, at a level between 30 and 70 percent, more in particular between 40 and 60 percent, and preferably halfway the smallest thickness of the remaining core layer material at the location of the tongue or the groove. Interlocking coupling parts are coupling parts that require elastic deformation, a click or a movement in multiple directions to couple or decouple the parts with or from each other.
It is also conceivable that the panel comprises at least two reinforcing layers extends in a direction substantially parallel to the plane defined by the panel, such that each reinforcing layer is situated at a level between 30 and 70 percent, more in particular between 40 and 60 percent, and preferably halfway, of the thickness from the top surface of the panel to a highest part of the top surface of the tongue, and/or the bottom surface of the panel to a lowest part of the upper surface of the lower lip, and wherein adjacent reinforcing layers are positioned at a predetermined distance from another. Preferably, there is no direct contact between said at least two reinforcing layers.
In an embodiment, the floor panel according to the invention comprises at least two reinforcing layers, wherein a first of the reinforcing layers is situated in the laminate, at a level between 30 and 70 percent, more in particular between 40 and 60 percent, and preferably halfway the smallest thickness of the remaining material at the location of the tongue, and wherein the second of the reinforcing layers is situated in the laminate, at a level between 30 and 70 percent, more in particular between 40 and 60 percent, and preferably halfway the smallest thickness of the remaining material at the location of the groove. In this embodiment, both tongue and groove are further optimised, leading to an even more stable panel, with a very low damage and wear risk. The reinforcing layer may be a separate part, inserted in the panel, it may be a part of the same material with different properties, such as a different density or different material structure, or it may be a layer in the laminate. Such reinforcing layer may be a closed layer or a mesh, sheet, or web material, that may be integrated or embedded in the core layer, especially when the core layer is made from a fluid or semi fluid material that requires curing.
In general, the core layer has a top surface and a bottom surface, and in an embodiment, the remaining material at the location of the tongue or the groove extends to the top surface and a bottom surface. That means, when removing material for forming the tongue or the groove, only one side of the panel needs to be edited.
When the complementary coupling parts are intended for forming a click, or need to bend in order to couple or to snap, it is preferable when at least one reinforcing layer has a flexibility that is higher than the flexibility of the core material and/or the core layer. Suitable materials to be applied as layer for the reinforcing layer for this purpose are fiberglass, polypropylene, cotton, silica or nylon.
These materials may be combined with a core layer comprising or consisting of MgO and/or Magnesium Oxy Chloride cement and/or, Magnesium Oxy Sulphate cement and/or MgC!2 and/or MgSO4, and a suitable binder. In a practical embodiment, the core layer may comprise at least 70% in weight of MgO and/or
Magnesium Oxy Chloride cement and/or, Magnesium Oxy Sulfate cement and/or MgCi2 and/or MgSO4, and a binder.
The core layer may for instance have a thickness between 3 and 8, in particular 5 between 5 and 6 mm, wherein the smallest thickness of the tongue or groove is between 1 and 3 mm.
lt is conceivable that the complementary coupling parts (or interlocking coupling parts) are configured to form a click connection.
The (floor) panel according to the invention may comprise a laminate of said core layer and at least one of a decorative top layer, an acoustic dampening layer and/or a balancing layer. A decorative top layer, if applied, may for example comprise at least one ply of cellulose-based layer and a cured resin, wherein the cellulose- based layer is preferably paper or kraft paper. Said ply of cellulose-based material may also be a veneer layer adhered to a top surface of the core layer. The veneer layer is preferably selected from the group consisting of wood veneer, cork veneer, bamboo veneer, and the like. Other decorative top layers that could possibly be applied for the present invention include a ceramic tile, a porcelain tile, a real stone veneer, a rubber veneer, a decorative plastic or vinyl, linoleum, and decorative thermoplastic film or foil. The top layer may possibly be further provided with a wear layer and optionally a coating. Examples of thermoplastics which could be used in such top layer are PP, PET, PVC and the like. It is also possible to provide on the top facing surface of the core layer an optional primer and print the desired visual effect in a direct printing process. The decorative top layer can receive a further finishing with a thermosetting varnish or lacquer such as polyurethane, PUR, or a melamine based resin. It is also conceivable that the panel comprises (at its back surface) at least one balancing layer, generally composed of at least one layer comprising lignocellulose and a cured resin. The panel may also comprise at least one acoustic layer, usually composed of a low density foamed layer of ethylene- vinyl acetate (EVA), irradiation-crosslinked polyethylene (IXPE), expanded polypropylene (XPP), expanded polystyrene (XPS), but also nonwoven fibers such as made from natural fibers like hemp or cork, or recycled/recyclable material such as PET. The density of this acoustic layer preferably has a density between 65 kg/m3 and 300 kg/m3, most preferably between 80 kg/m3 and 150 kgm3.
Tests were performed with two different panel compositions, and reinforcing layers (in the form of a layer of the laminate, comprising fibreglass) at different locations. The first panel has a core comprising Magnesium Oxy Chloride cement (MOC), and the second panel comprises a core comprising Magnesium Oxy Sulfate cement (MOS). Table 1 shows the characteristics of various tested panels, in particular floor panels. Core A-Tongue2 ~~ MOC = 54mm 22mm 2mm B: Tongue-0.5 MOS 54mm 22mm 05mm B-Tonguett MOS 54mm 22mm timm | B.Goowo0es MOS 54mm 13mm oesnm A: Groove-l MOC 54mm 13mm 1mm _ B-Groovet3 MOS 54mm 13mm 18mm Table 1: characteristics of various tested panels.
All (floor) panels were tested according to standardised tests mentioned in table 2. EN 310 | ield strength (point of breakage Table 2: tests performed The test results for the panels from table 1 are shown in table 3. A - Tongue-2 Table 3: test results From the results it appears that the at least one reinforcing layer is best situated in the laminate, at a level between 30 and 70 percent, more in particular between 40 and 60 percent, and preferably halfway the smallest thickness of the remaining core layer material at the location of the tongue or the groove.
The invention will now be elucidated into more detail with reference to the following figures: - figure 1, showing a core of a panel according to the present invention.
- figure 2, showing a core of a panel according to the present invention.
- figure 3, showing a core of a panel according to the present invention.
- figure 4, showing a core of a panel according to the present invention.
- figure 5, showing a core of a panel according to the present invention. Figure 1 shows two sides of a panel 1, in particular a floor panel 1, comprising a core layer 2, comprising a mineral or a cementitious material, at least one reinforcing layer 6, 7 situated in said core layer, wherein the floor panel, in particular the core layer, comprises a first pair of opposite edges, said first pair of opposite edges comprising interlocking coupling parts allowing to mutually couple of plurality of floor panels to each other, wherein the interlocking coupling parts are formed as a tongue 9 and a groove 3 by local removal of material at the respective edge. Further, the reinforcing layers 6, 7 extends in a direction substantially parallel to the plane defined by the panel, such that said reinforcing layer is situated at a level between 30 and 70 percent, more in particular between 40 and 60 percent, and preferably halfway, of the thickness from the top surface of the panel to a highest part of the top surface of the tongue, and/or the bottom surface of the panel to a lowest part of the upper surface of the lower lip. In particular, each reinforcing layer 6, 7, is situated halfway the smallest thickness 4, 5 of the remaining core layer material at the location of the tongue or the groove. The core has a top surface 9 and a bottom surface 8, and the remaining material at the location of the tongue or the groove extends to the top surface or the bottom surface.
Figure 2 shows two sides of a panel 21, in particular a floor panel 21, comprising a core layer 22, comprising a mineral or a cementitious material, at least one reinforcing layer 26, 27 situated in said core layer, wherein the floor panel, in particular the core layer, comprises a first pair of opposite edges, said first pair of opposite edges comprising interlocking coupling parts allowing to mutually couple of plurality of floor panels to each other, wherein the interlocking coupling parts are formed as a tongue 290 and a groove 23 by local removal of material at the respective edge.
The reinforcing layer 26, 27, is situated halfway the smallest thickness 24, 25 of the remaining core layer material at the location of the tongue or the groove.
The core has a top surface 29 and a bottom surface 28, and the remaining material at the location of the tongue or the groove extends to the top surface or the bottom surface.
Figure 3 shows two sides of a panel 31, in particular a floor panel 31, comprising a core layer 32, comprising a mineral or a cementitious material, at least one reinforcing layer 36, 37 situated in said core layer, wherein the floor panel, in particular the core layer, comprises a first pair of opposite edges, said first pair of opposite edges comprising interlocking coupling parts allowing to mutually couple of plurality of floor panels to each other, wherein the interlocking coupling parts are formed as a tongue 390 and a groove 33 by local removal of material at the respective edge.
The reinforcing layer 36, 37, is situated halfway the smallest thickness 34, 35 of the remaining core layer material at the location of the tongue or the groove.
The core has a top surface 39 and a bottom surface 38, and the remaining material at the location of the tongue or the groove extends to the top surface or the bottom surface.
Figure 4 shows two sides of a panel 41, in particular a floor panel 41, comprising a core layer 42, comprising a mineral or a cementitious material, at least one reinforcing layer 46, 47 situated in said core layer, wherein the floor panel, in particular the core layer, comprises a first pair of opposite edges, said first pair of opposite edges comprising interlocking coupling parts allowing to mutually couple of plurality of floor panels to each other, wherein the interlocking coupling parts are formed as a tongue 490 and a groove 43 by local removal of material at the respective edge.
The reinforcing layer 46, 47, is situated halfway the smallest thickness 44, 45 of the remaining core layer material at the location of the tongue or the groove.
The core has a top surface 49 and a bottom surface 48, and the remaining material at the location of the tongue or the groove extends to the top surface or the bottom surface.
Figure 5 shows two sides of a panel 51, in particular a floor panel 51, comprising a core layer 52, comprising a mineral or a cementitious material, at least one reinforcing layer 56, 57 situated in said core layer, wherein the panel, in particular the core layer, comprises a first pair of opposite edges, said first pair of opposite edges comprising interlocking coupling parts allowing to mutually couple of plurality of panels to each other, wherein the interlocking coupling parts are formed as a tongue 590 and a groove 53 by local removal of material at the respective edge.
The reinforcing layer 56, 57, is situated halfway the smallest thickness 54, 55 of the remaining core layer material at the location of the tongue or the groove.
The core layer has a top surface 59 and a bottom surface 58, and the remaining material at the location of the tongue or the groove extends to the top surface or the bottom surface.
Despite the figures showing embodiment comprising two reinforcing layers, it is also conceivable that a panel comprises one reinforcing layer, three reinforcing layers or any other number of reinforcing layers.
However, preferably for all embodiments, at least one the reinforcing layer extends in a direction substantially parallel to the plane defined by the panel, such that said reinforcing layer is situated at a level between 30 and 70 percent, more in particular between 40 and 60 percent, and preferably halfway, of the thickness from the top surface of the panel to a highest part of the top surface of the tongue, and/or the bottom surface of the panel to a lowest part of the upper surface of the lower lip.
It will be apparent that the invention is not limited to the working examples shown and described herein, but that numerous variants are possible within the scope of the attached claims that will be obvious to a person skilled in the art.
The above-described inventive concepts are illustrated by several illustrative embodiments.
It is conceivable that individual inventive concepts may be applied without, in so doing, also applying other details of the described example.
It is not necessary to elaborate on examples of all conceivable combinations of the above- described inventive concepts, as a person skilled in the art will understand numerous inventive concepts can be (re)combined in order to arrive at a specific application.
The verb “comprise” and conjugations thereof used in this patent publication are understood to mean not only “comprise”, but are also understood to mean the phrases “contain”, “substantially consist of”, “formed by” and conjugations thereof.
When it is referred to reinforcing layer also a reinforcing element can be meant, or vice versa.

Claims (13)

ConclusiesConclusions 1. Paneel, in het bijzonder een vloerpaneel, een wandpaneel, of een plafondpaneel, omvattende: — een kernlaag, omvattende een mineraal- of cementachtig materiaal; — ten minste een versterkende laag die zich in voornoemde kernlaag bevindt; waarbij het paneel, en in het bijzonder de kernlaag, een eerste paar overstaande randen omvat, waarbij een eerste rand van voornoemd paar overstaande randen een eerste koppelingsdeel omvat, en waarbij een tweede rand van voornoemd eerste paar overstaande randen een complementair tweede koppelingsdeel omvat, waarbij voornoemde koppelingsdelen het mogelijk maken dat meerdere panelen onderling worden gekoppeld; waarbij het eerste koppelingsdeel een zijwaartse tong omvat die zich uitstrekt in een richting die hoofdzakelijk evenwijdig is aan een door het paneel! gedefinieerd vlak, en waarbij het tweede koppelingsdeel een groef omvat die is ingericht voor het opnemen van ten minste een deel van de zijwaartse tong van een ander paneel, waarbij voornoemde groef wordt gedefinieerd door een bovenlip en een onderlip, met het kenmerk dat: — ten minste een versterkende laag zich uitstrekt in een richting die in hoofdzaak evenwijdig is aan het door het paneel gedefinieerde vlak, zodanig dat voornoemde versterkende laag is gelegen op een niveau tussen 30 en 70 procent, meer in het bijzonder tussen 40 en 60 procent, en bij voorkeur halverwege, van de dikte van: o het bovenoppervlak van het paneel tot een hoogste deel van het bovenoppervlak van de tong, en/of o het onderoppervlak van het paneel tot een laagste deel van het onderoppervlak van de onderlip.A panel, in particular a floor panel, a wall panel, or a ceiling panel, comprising: — a core layer, comprising a mineral or cementitious material; — at least one reinforcing layer contained in said core layer; wherein the panel, and in particular the core layer, comprises a first pair of opposite edges, wherein a first edge of said pair of opposite edges comprises a first coupling part, and wherein a second edge of said first pair of opposite edges comprises a complementary second coupling part, wherein said coupling parts allow a plurality of panels to be coupled together; the first coupling member comprising a lateral tongue extending in a direction substantially parallel to a direction passed through the panel. defined plane, and wherein the second coupling part comprises a groove adapted to receive at least a part of the lateral tongue of another panel, said groove being defined by an upper lip and a lower lip, characterized in that: - at at least one reinforcing layer extends in a direction substantially parallel to the plane defined by the panel such that said reinforcing layer is located at a level between 30 and 70 percent, more particularly between 40 and 60 percent, and at preferably half way, from the thickness of: o the upper surface of the panel to a highest part of the upper surface of the tongue, and/or o the lower surface of the panel to a lowest part of the lower surface of the lower lip. 2. Paneel volgens conclusie 1, omvattende ten minste twee versterkende lagen, waarbij de eerste versterkende laag zich in de kern bevindt, zich evenwijdig aan het vlak van het paneel uitstrekt, gelegen is op een niveau tussen 30 en 70 procent, meer in het bijzonder tussen 40 en 60 procent, en bij voorkeur halverwege de dikte van de tong van het bovenoppervlak van de kern tot het bovenste onderopperviak van het uitsteeksel dat de tong vormt, en/of waarbij een tweede versterkende laag zich in de kern bevindt, zich evenwijdig aan het vlak van het paneel uitstrekt, gelegen is op een niveau tussen 30 en 70 procent, meer in het bijzonder tussen 40 en 60 procent, en bij voorkeur halverwege de dikte van het onderoppervlak van de kern tot het onderste bovenoppervlak van het uitsteeksel dat de groef vormt.A panel according to claim 1, comprising at least two reinforcing layers, wherein the first reinforcing layer is located in the core, extends parallel to the plane of the panel, is located at a level between 30 and 70 percent, more particularly between 40 and 60 percent, and preferably halfway through the thickness of the tongue from the upper surface of the core to the upper lower surface of the projection forming the tongue, and/or wherein a second reinforcing layer is located in the core, parallel to extending into the plane of the panel, is located at a level between 30 and 70 percent, more preferably between 40 and 60 percent, and preferably halfway through the thickness of the lower surface of the core to the lower upper surface of the projection containing the groove forms. 3. Paneel volgens conclusie 1 of 2, waarbij ten minste een versterkende laag integraal onderdeel vormt van de kernlaag.The panel of claim 1 or 2, wherein at least one reinforcing layer forms an integral part of the core layer. A4. Paneel volgens een van de voorgaande conclusies, waarbij de kernlaag een bovenoppervlak en een onderoppervlak heeft, en waarbij het resterende materiaal ter hoogte van de tong of de groef zich uitstrekt naar het bovenoppervlak of onderopperviak.A4. Panel according to any of the preceding claims, wherein the core layer has an upper surface and a lower surface, and wherein the remaining material at the level of the tongue or groove extends to the upper surface or lower surface. 5. Paneel volgens een van de voorgaande conclusies, waarbij ten minste een versterkende laag een mat, plaat of webmateriaal omvat.A panel according to any one of the preceding claims, wherein at least one reinforcing layer comprises a mat, plate or web material. 6. Paneel volgens een van de voorgaande conclusies, waarbij ten minste een versterkende laag een flexibiliteit heeft die hoger is dan de flexibiliteit van de kernlaag.A panel according to any one of the preceding claims, wherein at least one reinforcing layer has a flexibility greater than the flexibility of the core layer. 7. Paneel volgens een van de voorgaande conclusies, waarbij ten minste een versterkende laag fiberglas, polypropyleen, katoen, PET, silicium en/of nylon omvat.A panel according to any one of the preceding claims, wherein at least one reinforcing layer comprises fiberglass, polypropylene, cotton, PET, silicon and/or nylon. 8. Paneel volgens een van de voorgaande conclusies, waarbij de kernlaag MgO, magnesiumoxychloride, magnesiumoxysulfaat, MgCl2, MgSO4, en/of MgCO3 en/of een bindmiddel omvat.A panel according to any one of the preceding claims, wherein the core layer comprises MgO, magnesium oxychloride, magnesium oxysulfate, MgCl2, MgSO4, and/or MgCO3 and/or a binder. 9. Paneel volgens conclusie 8, waarbij de kernlaag ten minste 70 gewichts% MgO, magnesiumoxychloride, magnesiumoxysulfaat, MgCi2, MgSO4, en/of MgCO3 en/of een bindmiddel omvat.The panel of claim 8, wherein the core layer comprises at least 70% by weight MgO, magnesium oxychloride, magnesium oxysulfate, MgCi2, MgSO4, and/or MgCO3 and/or a binder. 10. Paneel volgens een van de voorgaande conclusies, waarbij de kernlaag een dikte heeft gelegen tussen 3 en 8 mm, in het bijzonder tussen 6 en 6 mm.A panel according to any one of the preceding claims, wherein the core layer has a thickness of between 3 and 8 mm, in particular between 6 and 6 mm. 11. Paneel volgens een van de voorgaande conclusies, waarbij de kleinste dikte van de tong of groef is gelegen tussen 1 en 3 mm.A panel according to any one of the preceding claims, wherein the smallest thickness of the tongue or groove is between 1 and 3 mm. 12. Paneel volgens een van de voorgaande conclusies, waarbij de complementaire koppelingsdelen zijn ingericht voor het vormen van een klikverbinding. 12. Panel according to one of the preceding claims, wherein the complementary coupling parts are adapted to form a snap connection. 13 Paneel volgens een van de voorgaande conclusies, omvattende een laminaat van voornoemde kernlaag en ten minste een van: — een decoratieve toplaag; — een akoestisch dempende laag; — een balanslaag.A panel according to any one of the preceding claims, comprising a laminate of said core layer and at least one of: - a decorative top layer; — an acoustic damping layer; — a balance layer.
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