EP4060141A1 - Unité de sous-couche auto-stabilisée et revêtement de sous-couche - Google Patents

Unité de sous-couche auto-stabilisée et revêtement de sous-couche Download PDF

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Publication number
EP4060141A1
EP4060141A1 EP21163446.4A EP21163446A EP4060141A1 EP 4060141 A1 EP4060141 A1 EP 4060141A1 EP 21163446 A EP21163446 A EP 21163446A EP 4060141 A1 EP4060141 A1 EP 4060141A1
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EP
European Patent Office
Prior art keywords
underground
layer
laying unit
preferred direction
underground laying
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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.)
Granted
Application number
EP21163446.4A
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German (de)
English (en)
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EP4060141C0 (fr
EP4060141B1 (fr
Inventor
Peter Zöhrer
Florian Neuböck
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Weitzer Holding GmbH
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Weitzer Holding GmbH
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Publication date
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Priority to EP21163446.4A priority Critical patent/EP4060141B1/fr
Priority to PCT/EP2021/087764 priority patent/WO2022194419A1/fr
Publication of EP4060141A1 publication Critical patent/EP4060141A1/fr
Application granted granted Critical
Publication of EP4060141C0 publication Critical patent/EP4060141C0/fr
Publication of EP4060141B1 publication Critical patent/EP4060141B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • E04F13/0866—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 several layers, e.g. sandwich panels or layered panels
    • 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
    • E04F13/10—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 of wood or with an outer layer of wood
    • 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
    • E04F13/18—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 of organic plastics with or without reinforcements or filling materials or with an outer layer of organic plastics with or without reinforcements or filling materials; plastic tiles
    • 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
    • E04F15/02133—Flooring or floor layers composed of a number of similar elements fixed directly to an underlayer by means of magnets, hook and loop-type or similar fasteners, not necessarily involving the side faces of the flooring elements
    • E04F15/02144—Flooring or floor layers composed of a number of similar elements fixed directly to an underlayer by means of magnets, hook and loop-type or similar fasteners, not necessarily involving the side faces of the flooring elements by magnets
    • 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
    • E04F15/04—Flooring or floor layers composed of a number of similar elements only of wood or with a top layer of wood, e.g. with wooden or metal connecting members
    • E04F15/041—Flooring or floor layers composed of a number of similar elements only of wood or with a top layer of wood, e.g. with wooden or metal connecting members with a top layer of wood in combination with a lower layer of other material
    • 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
    • E04F15/04—Flooring or floor layers composed of a number of similar elements only of wood or with a top layer of wood, e.g. with wooden or metal connecting members
    • E04F15/045—Layered panels only of wood
    • 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
    • E04F15/105—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 organic plastics with or without reinforcements or filling materials
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/02—Flooring or floor layers composed of a number of similar elements
    • E04F15/10—Flooring or floor layers composed of a number of similar elements of other materials, e.g. fibrous or chipped materials, organic plastics, magnesite tiles, hardboard, or with a top layer of other materials
    • E04F15/107—Flooring or floor layers composed of a number of similar elements of other materials, e.g. fibrous or chipped materials, organic plastics, magnesite tiles, hardboard, or with a top layer of other materials composed of several layers, e.g. sandwich panels

Definitions

  • the invention relates to an underground laying unit, in particular a floor panel or a wall panel, for floating laying on an underground.
  • the invention further relates to an underground covering which has the underground laying unit.
  • the invention relates to a method for laying an underground covering.
  • the present invention can thus relate to the technical field of subfloor coverings, in particular multi-layer parquet coverings.
  • Parquet and other wood-based panels are popular and efficient floor or wall coverings, but are generally relatively expensive to install.
  • wood as a material reacts strongly to changes in humidity (literally "wood works") and thus shows a pronounced swelling and shrinking behavior, which can lead to bulges and cracks in the floor or wall covering.
  • parquet panels are usually glued to the subsurface and rigidly fastened to one another with connecting elements. However, this results in a high expenditure of time and money when renovating or replacing such floor or wall coverings.
  • WO 2012/156192 describes a surface laying unit for laying with other surface laying units on a subsurface, in particular an underground laying unit, the surface laying unit having a wear layer and a connection structure attached directly to an underside of the wear layer, which is set up for connecting to the subsurface.
  • EP 3 070 231 A1 relates to an underground laying unit for laying with other underground laying units for covering an underground, the underground laying unit having an underground-side fastening structure which is designed for fastening to the underground, and a plug-in connection structure facing away from the ground for detachable plug-in connection with a having a correspondingly designed plug-in connection structure of a surface-laying unit.
  • an underground covering which comprises: a plurality of underground laying units as described above.
  • the underground-laying units of the plurality of underground-laying units are laid floating on the ground and free of front-side connecting elements (therefore the underground-laying units are not connected to one another by additional connecting elements).
  • a "underground laying unit” can be understood in particular as a multi-layer module (in particular multi-layer parquet module), the wear layer of which is on or laid over a substrate is exposed or visible to the outside (possibly still covered with an optional protective coating).
  • the laying of the underground-laying unit can take place, for example, by means of the connection structure on the underside of the underground-laying unit with a ground.
  • the term underground laying unit is to be understood as meaning that it can be laid on any flat surface, for example a horizontal surface (in particular a floor, wall or ceiling surface), an inclined surface (in particular a ramp) or a vertical surface (in particular a Wall surface) can be laid.
  • the underground laying units can be manufactured in practically any format. This includes in particular any quadrangular configuration, further in particular rectangular arrangements (panels). However, other shapes, such as polygons, are also possible.
  • a “parquet” can be understood as a subfloor covering for rooms that has wood.
  • the wood usually hardwood from trees, can be sawn into small pieces and assembled according to specific patterns.
  • a "laminate covering" is to be distinguished from parquet, because laminate coverings consist of wood fibers as a carrier and are coated with melamine resin, whereby the visible wooden surface consists of a laminated paper layer with a wood pattern (decorative layer impregnated with melamine resin).
  • a "wear layer” can be understood in particular as a layer close to the surface or a surface layer or a board on which the actual mechanical and/or chemical stress on the laid floor or wall covering takes place.
  • a wear layer may be that which a user uses as a floor to walk on.
  • a wear layer can be a "board-like rigid layer" which has the mechanical properties of a board. Such a layer cannot be wound up on a roll, for example.
  • the top layer can be made of solid wood (real wood veneer).
  • the wear layer can consist solely of wood as a component. It can be made of solid wood, for example.
  • European types of wood that are processed into layers of the sub-base laying unit are, for example, oak, beech, maple, birch, walnut, cherry, ash, olive, acacia, elm, apple tree, pear tree, larch, stone pine and sweet chestnut.
  • Non-European types of wood that can be used are, for example, merbau, wenge, teak or mahogany.
  • wood Due to the wood fibers and their orientation, wood generally has anisotropy and a preferred direction. In principle, a distinction is made: i) longitudinal (alignment of the fibers), ii) radial (across the fiber direction and across the annual rings), and iii) tangential (across the fiber direction and along the annual rings), whereby in this document the fiber direction (longitudinal , i) can be called the preferred direction.
  • swelling and shrinkage behavior can refer in particular to the fact that the volume of wood increases or decreases when there is a change in moisture.
  • wood can expand or shrink.
  • Swelling and shrinkage can be characteristic values for the hygroscopic properties of wood and wood-based materials, which describe the dimensional change in a workpiece depending on the moisture in the wood.
  • the shrinkage is the change caused by the reduction in the moisture contained (shrinkage), while the swelling is the change due to moisture absorption (swelling).
  • the swelling and shrinking behavior acts in particular along the three directions outlined above.
  • i:ii:iii of 1:10:17 for the swelling and shrinking behavior.
  • All types of wood have their specific swelling and shrinking behavior, but in general it can be said that softwoods are usually less shrink more than hardwoods, for example, the wood of oak and beech shrinks more than that of spruce and pine.
  • a common method for determining swelling and shrinkage is described in the DIN 52184 standard.
  • wood panels can also curve outwards (convex) or inwards (concave) (so-called cupping) when laid when there is a change in humidity, see Figures 3 and 4 below.
  • a “stabilization layer” can be understood to mean, in particular, a layer or board remote from the surface, which serves to stabilize the laid floor or wall covering as a whole.
  • the stabilization layer preferably does not (substantially) exhibit any swelling or shrinking behavior in the event of changes in humidity, in contrast to e.g. wood veneer.
  • the stabilizing layer comprises (substantially) no wood or less wood than a wood veneer.
  • the stabilization layer can have a plastic or a metal, since these materials (essentially) do not show any swelling or shrinking behavior when there are changes in humidity.
  • the stabilization layer has an anisotropic property and a corresponding preferred direction. This is the case, for example, if the stabilization layer has fibers, e.g. a glass fiber reinforced plastic mat.
  • the stabilization layer can also have an isotropic material, e.g. be designed as aluminum foil.
  • a “base layer” can be understood in particular as a layer or a board that is remote from the surface, which increases the stability of the underground installation unit.
  • a base layer can function as a barrier layer and/or as a balancing layer.
  • the base layer has a wood veneer, but other configurations are also possible, eg plastic or metal. However, this should be implemented in such a way that there is a preferred direction in order to act as a barrier layer and/or as a counteracting layer in conjunction with the useful layer.
  • a "connecting structure” can be understood in particular as any physical structure that is specially adapted to connect to the intended neighboring element (e.g. an underground connecting structure or a counterpart), i.e. to exert a fastening force on it.
  • a connection structure can be formed as a layer or as one or more specially attached elements.
  • the underground laying unit can be laid, for example, by means of an additional connection structure on the underside of the underground connection structure and/or by means of an additional connection structure on the upper side of the underground. It is also possible to lay the subsurface connection structure floating on the subsurface (e.g. with a magnetic foil).
  • the term “subsoil” can refer to a "subsoil”. Furthermore, the term can also include an "underground floor” with an additional “underground connecting structure”.
  • An “underground floor” can be understood in particular as any flat or essentially flat surface that can be covered with underground laying units.
  • the sub-floor can be a sub-floor of a building (e.g. a building floor, a building ceiling or a building wall), i.e. an on-site sub-floor. However, it is also possible to use stairs or staircases (in particular horizontal and/or vertical surfaces of steps) as the underground floor.
  • a sub-floor can, for example, include the following: screed, wooden floor, tiles, laminate, PVC covering, carpets, etc.
  • a “top side” of a layer or an element can be understood in particular as a main surface of this layer or this element, which faces away from the substrate when this layer or this element is laid as intended.
  • a “lower side” of a layer or an element can be understood in particular as such a main surface of this layer or this element which faces the substrate when this layer or this element is laid as intended.
  • the term "floating laying” can be understood in particular to mean that a subsurface laying unit is laid on a subsurface in a reversible manner, that is to say it can be detached without being destroyed.
  • a such a reversible laying can be realized, for example, via magnetic elements, snap-in elements or no connection at all.
  • a connection using a special easily detachable adhesive eg without leaving any residue
  • the term “floating installation” does not include conventional adhesives (e.g. silane-modified parquet adhesive (SMP) or PUR adhesive), which do not allow the sub-floor installation unit to be detached without leaving any residue.
  • a "detachable connection" of two elements by means of a connection structure can be understood in particular to mean that after such a connection has been formed, it can be released again reversibly and non-destructively by applying a release force.
  • Such non-destructive detachment allows the connection structure to be reused after detachment, in particular reused at least ten or at least a hundred times, without the connection function suffering or being impaired as a result.
  • Such a connection can be released by a user without using a tool.
  • the detaching force should be at least 10 N, in particular more than 20 N, more particularly more than 30 N.
  • the forces can also have other magnitudes.
  • the invention can be based on the idea that laying underground installation units on an underground resource-saving, environmentally friendly, flexible, with little effort and at the same time reliable and protected from unwanted high (residual) stresses is possible if a self-stabilized underground installation unit with a very special layer structure is used.
  • a barrier structure is selected in which the preferred directions of a wear layer and two base layers are selected in relation to one another in such a way that unwanted stresses due to the swelling and shrinking behavior with changes in humidity are blocked.
  • a stabilization layer is now introduced under the wear layer and above the base layers, which does not show any swelling or shrinking behavior and This enables optimal self-stabilization of the underground laying unit.
  • the underground laying unit is free of connecting elements to other underground laying units on all front sides (long sides and width sides). This can have the advantage that material and production costs can be saved and the necessary stability is nevertheless provided. In particular, this new way of laying can advantageously create a completely different feeling when walking, e.g. because underground laying units can be moved vertically.
  • sub-floor laying units such as parquet panels are provided on the front sides with connecting elements to other sub-floor laying units in order to provide a robust connection and thus a stable sub-floor covering.
  • These connecting elements usually include click-in or snap-in mechanisms based on the tongue and groove principle.
  • Most fasteners are made of wood or wood scraps, however these can also have metal or plastic, for example. It is therefore necessary to click or snap in for attachment, and this is usually on all end faces.
  • a floor panel there are two long sides and two width sides. However, other shapes with more end faces are also conceivable.
  • These connecting elements in a simple or very complex structure) are so widespread that a stable panel structure does not seem possible without them.
  • connection-element-free structure is made possible in a stable and robust manner by using the described self-stabilized underground laying unit.
  • connection structure has at least one from the group consisting of: a magnetic layer, a magnetic foil, a magnetic mat (e.g. an iron mat), a plurality of magnetic elements (e.g. individual permanent magnets), a snap connection, a click -connection, a plug connection, a tongue and groove connection, a Velcro mat, a detachable adhesive layer (e.g. double-sided adhesive tape), an electrostatically charged mat (whereby the charge carriers can be enclosed inside such a mat), a slip mat (e.g. made of a rubber material with high static friction), a spray or brush layer and/or an arrangement of suction cups.
  • a magnetic layer e.g. an iron mat
  • a plurality of magnetic elements e.g. individual permanent magnets
  • a snap connection e.g. an iron mat
  • a click -connection e.g. individual permanent magnets
  • plug connection e.g. individual permanent magnets
  • a tongue and groove connection e.g. a tongue and groove connection
  • connection structure is set up to provide a magnetic, mechanical or electrical connection.
  • the connecting structure can be permanently attached to the support layer, in particular sprayed on as a dry spray fluid, applied as a dry paint, or laminated, welded or glued to it as a flexible or rigid solid.
  • a magnetic layer can be applied to the wear layer as a liquid suspension of magnetic particles (e.g. colloids or magnetic filings) and a solvent, etc. After the suspension has dried, a thin magnetic layer that can be produced at low cost then remains on the wear layer.
  • the bonding structure may also include a hot melt adhesive. A hot melt adhesive is applied in a molten form and then adheres to the surface when cooled again to a temperature below the melting point.
  • the underground laying unit has a thickness of 10 mm or less, in particular 5 mm or less, in particular 4.8 mm or less, in particular 4.5 mm or less, in particular 4.2 mm or less, in particular 4 mm or less fewer.
  • this construction height (with at least five layers including a wood veneer wear layer) is extremely low. It is extremely surprising that such a thin multi-layer panel is still strong enough to withstand the stresses that a subfloor is subjected to in everyday use.
  • connection structure has a thickness of 2 mm or less, in particular 1.5 mm or less, in particular 1 mm or less, in particular 0.8 mm or less.
  • wear layer has a thickness in the range from 0.2 to 1.1 mm, in particular in the range from 0.4 mm to 0.9 mm.
  • the first base layer and/or the second base layer has another wood veneer.
  • at least one of the wood veneers has a real wood layer (or solid wood layer, solid wood layer). This can have the advantage that a tried and tested product can be used directly.
  • a layer of real wood gives a particularly positive visual impression in addition to the advantages of stability (and ease of care).
  • a wood veneer layer can have a particularly stabilizing effect on the base layers.
  • both the wear layer and at least one of the base layers use a wood veneer, in particular from the same type of wood.
  • both layers show a similar, in particular the same, swelling and shrinking behavior when there is a change in humidity. Accordingly, the preferred directions can act on one another in a particularly efficient, self-stabilizing manner.
  • the first preferred direction and the third preferred direction are arranged (essentially) parallel to one another.
  • the second preferred direction is arranged (substantially) perpendicular to the first preferred direction and the third preferred direction.
  • the stabilization layer has a fourth preferred direction.
  • the fourth preferred direction is (substantially) arranged perpendicular to the first preferred direction (and parallel to the second preferred direction). This can result in the advantage that a further blocking effect or self-stabilization can be individually/flexibly introduced directly below the wear layer.
  • the stabilization layer has at least one from the group consisting of: a resin matrix (e.g. PUR, EPI, etc.), a fiber material, a fiber-reinforced plastic, a viscose matrix, a metal foil, in particular an aluminum Foil, a mineral-bound fibreboard, a material with a high modulus of elasticity compared to the wear layer, an anisotropic material.
  • a resin matrix e.g. PUR, EPI, etc.
  • this effect is intensified by a likewise anisotropic glass fiber mat that is precisely matched to the warping properties of the wood.
  • the tension fiber is therefore not used in the classic way as a "counter-tension" (in the case of a symmetrical structure, the tensile force of the wear layer (e.g. oak) should be balanced) but as a supporting layer of the first base layer (this corresponds to a plywood cross layer).
  • the stabilization layer can be matched to the warping properties of wood veneer (e.g. sliced hardwood veneer) by means of different grammages in the longitudinal and transverse direction in order to reduce the swelling and shrinkage behavior to a minimum in addition to the conventional transverse layer (first base layer).
  • the stabilization layer can be provided in such a way that the anisotropy is less pronounced than with wood. This provides a large number of adjustment and optimization options.
  • warpage optimization or prestressing can be accomplished through the targeted introduction of moisture.
  • an increase in hardness can be made possible by introducing the stabilization layer (e.g. glass fiber mat).
  • the stabilization layer can directly adjoin the useful layer. In this case, their stabilizing effect is particularly pronounced.
  • glass fiber e.g., in a plastic matrix
  • the preferred direction can be aligned across the grain of a wood veneer layer (e.g. oak).
  • a glass fiber with a uniform distribution, i.e. 1:1, can also be used. However, this would still be anisotropic since it does not have any fibers in the thickness.
  • the blocking effect of the glass fiber also applies to the wear layer (e.g. oak) and the base layer underneath (e.g. birch). Because of this, the glass fiber can now have almost equi-alignment between longitudinal and transverse.
  • the underground laying unit also has: a connecting layer which is arranged between the first base layer and the second base layer.
  • the connecting layer has an adhesive and/or a natural resin.
  • At least one of the laid subsurface laying units is (at least partially) movable in the vertical direction. This has the particular advantage that a completely new feeling of walking can be provided, although material and production costs are saved.
  • the subsurface covering also has: a subsurface connecting structure (in particular a subsurface connecting layer) which is laid on the subsurface and which is (or can be) releasably connected to the connecting structure.
  • a subsurface connecting structure in particular a subsurface connecting layer
  • This can bring the particular advantage that the underground laying unit can be exchanged in a quick and practical manner. Instead of re-laying the entire floor (as is usual with conventional parquet panels), each sub-floor laying unit can now be replaced individually.
  • connection structure has a magnetic layer
  • subsurface connection structure has a further magnetic layer, which is laid floating on the subsurface.
  • the total path of the swelling and shrinking behavior or the curvature of the underground laying unit when changing between a humid climate and a dry climate is 0.15 mm or less, in particular 0.1 mm or less, more particularly 0.08 mm or less.
  • a special sandwich structure is selected, which for the first time enables a (real wood) Lay the subfloor with a total structure thickness of ⁇ 3 mm without connecting elements (longitudinal and transverse) "floating" with a comparable swelling and shrinking behavior (with changes in humidity) as is usual with classic multi-layer parquet.
  • the sandwich structure is a new type of engineered wood product that uses a stabilization layer that is not necessarily cellulose-based in order to "lock off" the swelling and shrinkage behavior of the wear layer, although the stabilization layer does not act as a counteract.
  • the properties of different types of wood and those wood veneer layers of different thicknesses are used to direct the tendency to warp/curvature (concave/convex) into a convex cupping ( in addition to blocking swelling and shrinkage).
  • a variable introduction of water through different water contents in the glued joints such as is achieved, for example, by adding water or different adhesive systems (EPI/PVAc/PUR), can be used to advantage.
  • This inhomogeneous introduction of water initiates stresses in the multi-layer structure during the pressing process, which means that the initial distortion (slight prestress in the convex direction) can be provided as desired.
  • FIG 1 shows a cross section through an underground laying unit 100 according to an exemplary embodiment of the invention.
  • the underground laying unit 100 is designed as a floor panel, which has two long sides 101 and two wide sides 102, which are referred to as front sides. It is noticeable that none of these end faces 101, 102 have connecting elements, which are conventionally always present and used to connect a floor panel to another floor panel at the end faces.
  • Such connecting elements usually comprise, for example, snap-in or click-in connections based on the tongue and groove principle.
  • the underground laying unit 100 has a thickness of 4.2 mm, for example, with the connecting structure 150 having a thickness of 1 mm, for example.
  • the wear layer 110 has a thickness in the range of 0.4 mm to 0.9 mm, depending on the wood veneer used.
  • a subsurface 200 having the subsurface connection layer 160 is shown under the subsurface laying unit 100 .
  • This serves as a sub-floor covering for the actual sub-floor 201, e.g. a screed.
  • the subsurface connecting layer 160 is designed as a magnetic foil that is laid (unrolled) floating on the subsurface 201 . If the connecting structure 150 and the underground connecting structure 160 are magnetically coupled, then the underground laying unit 100 is laid on the underground 200 in a floating manner or without adhesive.
  • a plurality of underground laying units 100 are used to cover the underground 200, they are all laid in a floating manner and free of end connection elements. The result of this is that at least some of the laid underground laying units 100 can be moved in the vertical direction and thus enable a completely new feeling of walking and can also be replaced particularly easily at a later date.
  • figure 2 12 shows a cross-sectional view of an underground laying unit 100 according to another exemplary embodiment of the invention.
  • the construction is that of figure 1 very similar.
  • a connecting layer 135 is provided, which is arranged between the first base layer 130 and the second base layer 140 .
  • the tie layer 135 includes an adhesive and can be targeted to provide certain desired properties.
  • figure 3 10 clearly shows the swelling and shrinking behavior of an underground installation unit 100 according to an exemplary embodiment of the invention in a humid climate and in a dry climate. While there is a concave curvature of around 0.04 mm in a humid climate, a convex curvature of around 0.04 mm can be observed in a dry climate.
  • figure 4 shows clearly the overall path of the swelling and shrinking behavior of the underground laying unit according to an exemplary embodiment of the invention in a humid and dry climate. through the in figure 3
  • the curvatures described result in a total travel of 0.08 mm. This is a particularly advantageous and very small overall distance, which is even smaller than in the case of a large number of multi-layer parquet floors glued over the entire surface.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Road Paving Structures (AREA)
  • Floor Finish (AREA)
EP21163446.4A 2021-03-18 2021-03-18 Unité de sous-couche auto-stabilisante et revêtement de sous-couche Active EP4060141B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP21163446.4A EP4060141B1 (fr) 2021-03-18 2021-03-18 Unité de sous-couche auto-stabilisante et revêtement de sous-couche
PCT/EP2021/087764 WO2022194419A1 (fr) 2021-03-18 2021-12-29 Unité de pose de substrat auto-stabilisé, revêtement de substrat et procédé permettant de poser une telle unité de pose de substrat

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DE102024118286A1 (de) * 2024-06-27 2025-12-31 Meisterwerke Schulte Gmbh Plattenförmiges Bauelement sowie ein Verfahren zur Herstellung eines plattenförmigen Bauelements

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WO2012156192A1 (fr) 2011-05-16 2012-11-22 Weitzer Holding Gmbh Système de revêtement de sol ou mural possédant des unités de pose combinables de manière modulaire
US8895125B2 (en) * 2010-05-12 2014-11-25 3A Technology & Management Ltd. Multi-layer wood veneer moulding
EP3070231A1 (fr) 2015-03-20 2016-09-21 Weitzer Holding GmbH Semelle interchangeable comprenant un connecteur a fiches
WO2018237096A1 (fr) * 2017-06-20 2018-12-27 Golconda Holdings, Llc Unités de surface modulaires en bois modifié et en bois à réception magnétique et système de boîte magnétique pour recouvrir sols, murs et autres surfaces
DE102019122037A1 (de) * 2019-08-16 2021-02-18 Fritz Kohl GmbH & Co. KG Mehrschichtiger holzkompositblock, mehrschichtiges holzfurnier sowie verfahren zur herstellung derselben

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8895125B2 (en) * 2010-05-12 2014-11-25 3A Technology & Management Ltd. Multi-layer wood veneer moulding
WO2012156192A1 (fr) 2011-05-16 2012-11-22 Weitzer Holding Gmbh Système de revêtement de sol ou mural possédant des unités de pose combinables de manière modulaire
EP3070231A1 (fr) 2015-03-20 2016-09-21 Weitzer Holding GmbH Semelle interchangeable comprenant un connecteur a fiches
WO2018237096A1 (fr) * 2017-06-20 2018-12-27 Golconda Holdings, Llc Unités de surface modulaires en bois modifié et en bois à réception magnétique et système de boîte magnétique pour recouvrir sols, murs et autres surfaces
DE102019122037A1 (de) * 2019-08-16 2021-02-18 Fritz Kohl GmbH & Co. KG Mehrschichtiger holzkompositblock, mehrschichtiges holzfurnier sowie verfahren zur herstellung derselben

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