Method for coating narrow surfaces of panel elements

Abstract

The invention relates to a method for narrow-surface coating of, preferably rectangular, panel elements, in particular furniture panels, wood-based panels, worktops, chipboard, lightweight panels, interior finishing panels, doors, fiber cement panels or the like. - wherein the narrow surface coating is at least partially carried out using edge band profiles which have a core made of B-material, for example recycled material, and - wherein the core of the strip, viewed in profile cross-section, is covered with polymeric A-material at least on the outside of its longitudinal side covering the narrow surface and on at least one transverse side, preferably to be machined, which is characterized by the fact that the two edge band profiles attached opposite each other to the panel element, which in the joint areas at the corners of the panel element cover the other two edge band profiles, consist at least in the joint areas only of A-material. Furthermore, the invention relates to a panel element, in particular a furniture panel, worktop, chipboard, lightweight panel, interior panel, door, fiber cement panel or the like, wherein the core of the strip, viewed in profile cross-section, is covered at least on the outside of its longitudinal side covering the narrow surface and on at least one transverse side, preferably to be machined, with polymeric A-material.

Description

[0001] The invention relates to a method for narrow-surface coating of, preferably rectangular, panel elements, in particular furniture panels, wood-based panels, worktops, chipboard, lightweight panels, interior finishing panels, doors, fiber cement panels or the like. - wherein the narrow surface coating is at least partially carried out using edge band profiles which have a core made of B-material, for example recycled material, and - wherein the core of the strip, viewed in profile cross-section, is covered with polymeric A-material at least on the outside of its longitudinal side covering the narrow surface and on at least one transverse side, preferably to be machined by machining.

[0002] The invention further relates to an edge band profile with at least one core strip having at least one end face and at least one longitudinal edge side, and at least one outer layer connected to the core strip having at least one longitudinal edge side, wherein at least one core strip and the structural layer comprise at least a portion of a polymeric material, wherein at least one core strip and the structural layer have a width B3, B4 of 5 to 120 mm, preferably 5 to 105 mm, wherein at least one core strip and the structural layer have a thickness D3, D4 of 0.2 to 12 mm, preferably 0.4 to 10 mm, furthermore the invention relates to the technical field of panel elements, such as furniture panels, wood-based panels, worktops, particleboard, lightweight panels, interior finishing panels, doors, fiber cement panels and the like with at least one such edge band profile.

[0003] Such edge banding profiles have primarily been used to decorate or protect the narrow surfaces / side edges of objects such as furniture panels, wood-based panels, worktops, chipboard, lightweight panels, interior finishing panels, doors, fiber cement panels, and the like. For this purpose, the edge banding profiles are, for example, fixed to the narrow surfaces / side edges of the objects to be decorated or protected.

[0004] It is known from the prior art that the edgeband profiles are first brought into contact with the relevant narrow surfaces of the panel element and thus glued / fixed by means of an activatable adhesive under heat. So-called edgebanding machines are used for this purpose.

[0005] After the ends of the fixed edgeband profiles on the front and rear faces of the panel element are cut off, the edgeband profile is typically shaped using a pre-milling and a chamfering process. In a further station of the edgebanding machine, the panel elements with the pre-processed edgeband profiles pass through a finishing unit and a device designed as a scraper to give the edgeband profiles their final outer contour while removing the milling marks.

[0006] This is described, for example, in DE9015079 U1.

[0007] Furthermore, such a device for processing the edges of edge band profiles of continuously moving plate-shaped workpieces such as plate elements is disclosed in DE 3732810C1.

[0008] Furthermore, DE 202015100800 U1 discloses an edge band profile designed as an edge strip. This profile is designed for fastening to a workpiece, in particular for the narrow-surface coating of furniture panels, worktops or similar material panels, and comprises a base layer made of a thermoplastic material with a structured upper surface and a cover layer made of a transparent or translucent thermoplastic material arranged on the base layer. The top surface of the cover layer forms the visible surface of the edge strip completely or partially, and its underside fully or partially abuts the profiled upper surface of the base layer.

[0009] However, the use of materials in edge banding profiles can be further optimized to make them more cost-effective and significantly more sustainable.

[0010] Sustainability is playing an increasingly important role in the edge banding of panel elements. Therefore, efforts are being made to use as much filler material as possible in the corresponding edge banding profiles, made from waste, recycled materials, recyclates, polymers based on renewable resources, or similar materials – so-called B-material. However, this B-material does not meet the requirements (optical, mechanical, chemical, etc.) for the surface of the panel's narrow edges and can therefore only be used in the interior of the mounted edge banding profiles, where it is not visible from the outside.

[0011] A-material meets the high optical requirements for narrow-area coating and consists, for example, of virgin polymer material such as PP, PMMA, ABS, etc.

[0012] However, a problem arises when using edgebands with a core made of B-material encased in A-material in the corner areas of the panel. In a typically rectangular panel, two opposing edgeband profiles usually protrude beyond the other two profiles, which are flush at the panel corners, and are milled at the ends to create rounded corners.

[0013] However, this reveals the core of the molding made of B-material, meaning that to avoid visual defects in the corner areas, it must ultimately meet comparatively high requirements regarding color, consistency, etc. Therefore, the use of recycled materials, for example, is subject to rather strict limitations in the current state of the art.

[0014] This is where the invention comes in, which is intended to improve the application possibilities of B-material in the narrow-area coating of panel elements.

[0015] The invention further aims to overcome the disadvantages of the prior art and to provide a method for narrow-area coating of, preferably rectangular, panel elements, in particular furniture panels, wood-based panels, worktops, particleboard, lightweight panels, interior finishing panels, doors, fiber cement panels or the like, edge banding profiles, which is economical and cost-effective to manufacture, which on the one hand makes it possible to achieve a high-quality visual impression and retains the previous functions from the prior art, which is also significantly more sustainable, and which comprises at least one panel element edge banding profile with at least one core strip having at least one end face and at least one longitudinal edge side, and at least one structural layer connected to the core strip having at least one longitudinal edge side.wherein at least one core strip and the structural layer at least partially comprise a polymeric material.

[0016] According to the invention, this problem is solved by the features of claim 1.

[0017] Further advantageous embodiments are described in the dependent claims.

[0018] It has surprisingly been shown that a method for narrow-surface coating of, preferably rectangular, panel elements, in particular furniture panels, wood-based panels, worktops, chipboard, lightweight panels, interior finishing panels, doors, fiber cement panels or the like, - wherein the narrow surface coating is at least partially carried out using edge band profiles which have a core made of B-material, for example recycled material, and - wherein the core of the strip, viewed in profile cross-section, is covered with polymeric A-material at least on the outside of its longitudinal side covering the narrow surface and on at least one transverse side, preferably to be machined, which is characterized by the fact that the two edge band profiles attached opposite each other to the panel element, which in the joint areas at the corners of the panel element each covering, at least in the impact areas consisting only of A-material, fulfills this task.

[0019] An advantage of this method is that even on a post-processed transverse side, the core of the strip remains covered with A-material.

[0020] Another advantage of the method is that in the joint areas, the overlapping edge band profiles undergo post-processing to round off the corners of the panel element, so that the corners of the panel element are formed only of A-material.

[0021] B-material within the meaning of the invention is, for example, recycled material, e.g., made from a polymer. Alternatively, B-material can also be a paper-based material, a veneer-based material, a wood-based material, and the like. B-material generally differs from A-material in terms of its composition; however, this does not preclude the possibility that A-material and B-material may consist of the same material but of different qualities. B-material within the meaning of the invention typically does not meet the requirements for the appearance of the panel element. Therefore, within the scope of the invention, B-material is always covered by A-material on the outer surface of the panel element.

[0022] A further advantage of the method is that the edge band profile is manufactured in such a way that the thickness D3 of the strip core, made of B-material, is a maximum of 99%, preferably a maximum of 90%, and particularly preferably a maximum of 80% of the thickness D4 of the edge band profiles.

[0023] It has further proven advantageous in the process that the edge banding profile is manufactured such that the difference in thickness D4 of the edge banding profiles made from A-material to the thickness D3 of the core strip made from B-material is at least 0.8 mm, preferably at least 0.5 mm, and particularly preferably at least 0.3 mm. It has also proven advantageous in the process that the edge banding profile is manufactured such that the difference in width B10 of the core of the panel element to the width B3 of the core strip made from B-material is at least 8 mm, preferably at least 4 mm, and particularly preferably at least 1 mm. For example, at least 1 mm. Within the scope of the invention, it is fundamentally the case that in an inventive method for narrow-surface coating of panel elements, an edge banding profile containing B-material is flush-milled with the panel element, such as...As described in DE 3732810C1, a minimum distance of at least 0.2 mm, e.g., at least 0.4 mm, and in particular at least 1 mm, is generally required between the B-grade material and the outer surface. This minimum distance takes into account the fact that, due to technical reasons, the edge banding is attached to the narrow surface with a certain degree of height variation. The described minimum value is advantageous to prevent this from exposing B-grade material during flush trimming.

[0024] One advantage of this method is that the edge banding profiles covered in the corner areas have a core made of B-material, while the overlapping edge banding profiles have a core made solely of A-material. Furthermore, the overlapping edge banding profiles are always shorter in the longitudinal direction than the edge banding profiles with a B-material core.

[0025] A further advantage of the method is that the overlapping edge band profiles are produced by means of clocked extrusion, in which the core of the strip consists optionally of A-material or B-material according to the clocking, and that the clocked extrusion is carried out in such a way that the corner areas of the plate elements of the forming section consist only of A-material.

[0026] A further advantage of the method is that the core of the edgeband profiles, which are produced, for example, by clocked extrusion, may have at least one identification element corresponding to the clocking, which distinguishes the beginning / end of the core made of B-material from the core made of A-material. The identification element can be, for example, a coating, embossing, printing, barcode, or RFID element. It is also within the scope of the invention that the A-material and / or the B-material itself is designed in such a way that it is detectable by sensors. Furthermore, it is also within the scope of the invention that the A-material and / or the B-material contains additives that are detectable by sensors, or that the A-material or B-material itself can be distinguished from a sensor.

[0027] Another advantage of this method is that the edge banding profiles covered in the corner areas have a core made of B-material, while the overlapping edge banding profiles, in which the core is optionally made of A-material or B-material depending on the grading, each have one end face made solely of A-material. Furthermore, the overlapping edge banding profiles always have a greater length in the longitudinal direction than the overlapping edge banding profiles with a core made of B-material.

[0028] A further advantage of the method is that the edge band profiles covered in the corner areas have a core made of B-material, which are always longer in the longitudinal direction of the profile than the covering edge band profiles, and that the covering edge band profiles consist entirely of a core made of A-material.

[0029] The edge band profile for carrying out the method according to the previous descriptions with a strip core made of B-material, in particular recycled material, is characterized in that the strip core, viewed in the profile cross-section, is covered at least on the outside of its longitudinal side covering the narrow surface and on at least one transverse side to be machined, preferably by machining, with polymeric A-material.

[0030] One advantage of the edge band profile is that, viewed in the profile direction, the core of the strip has sections made of B-material that alternate with sections made of A-material.

[0031] Another advantage of the edge band profile is that in the longitudinal direction L of the profile, at least one first longitudinal edge side of at least one first strip core is arranged at least partially spaced apart from at least one second longitudinal edge side of at least one second strip core.

[0032] A further advantage of the edge band profiles is that, in the longitudinal direction L of the profile, at least one first longitudinal edge side of at least one first strip core is arranged at least partially spaced apart from at least one second longitudinal edge side of at least one second strip core by the structural layer consisting of A-material.

[0033] It has surprisingly been found that an edge banding profile for fastening to a panel element, in particular for the narrow surface coating of furniture panels, wood-based panels, worktops, chipboard, lightweight panels, interior finishing panels, doors, fiber cement panels or the like, with a core strip made of B-material, in particular recycled material, wherein the core strip, viewed in profile cross-section, is covered at least on its outer longitudinal side covering the narrow surface and on at least one transverse side, preferably to be machined, with polymeric A-material, wherein at least one core strip and the structural layer have a width B3, B4 of 5 to 120 mm, preferably 5 to 105 mm, wherein at least one core strip and the structural layer have a thickness D3, D4 of 0.2 to 12 mm, preferably 0.4 to 10 mm, is characterized by the following:that at least one core strip has at least partially a narrower width B3 than the width B4 of the structural layer, that at least one core strip has at least partially a narrower thickness D3 than the thickness D4 of the structural layer, that in the longitudinal direction L of the profile at least one core strip is spaced at least partially from at least one longitudinal edge L41,L42 of the structural layer, that at least one first end face of at least one first core strip is spaced from at least one second end face of at least one second core strip, this solves this problem. This advantageously makes it possible to provide edge band profiles that not only realize the previously known functional effects, for example against moisture or temperature,but that these edgebanding profiles can be manufactured much more sustainably. Furthermore, this enables the recycling of materials, raw materials, and the like, as well as the reuse of recyclates. It is also advantageous that a significantly wider range of usable recyclates can be employed with regard to color, quality (e.g., regarding impurities or mixtures of different polymers), and the polymer's processing behavior (e.g., regarding melt flow). Another advantage of the edgebanding profile is that the material price and manufacturing costs are very low, while the necessary raw materials are more readily available. As a result, this edgebanding profile has a significantly lower CO2 footprint than edgebanding profiles in the known prior art.

[0034] The edge banding profile is therefore very versatile and can be applied to various objects such as furniture panels, wood-based panels, worktops, chipboard, lightweight panels, interior finishing panels, doors, fiber cement panels and the like. In addition to its function of protecting a narrow surface / end face of, for example, a furniture panel, it also allows for improved visual and design aspects.

[0035] An advantage of the edgeband profile is that, in the longitudinal direction L of the profile, at least one first end face of at least one first core strip is at least partially separated from at least one second end face of at least one second core strip by the structural layer. This makes it possible to provide edgeband profiles that, even during their manufacture, already have a defined length in the longitudinal direction L, corresponding to the length of a narrow surface / end face of, for example, a furniture panel to be coated later.

[0036] Another advantage of the edgeband profile, which is manufactured using clocked extrusion, is that the core of the strip has at least one identification element corresponding to the clocking sequence. This element distinguishes the beginning / end of the core made of B-material from the core made of A-material. The identification element can be, for example, a coating, a print, a barcode, or an RFID element.

[0037] A further advantage of the edgeband profile is that, in the longitudinal direction L of the profile, at least one first longitudinal edge of at least one first core strip is at least partially spaced apart from at least one second longitudinal edge of at least one second core strip. This makes it possible to produce cost-effective and economical, sustainable edgeband profiles, as it allows for the production of several edgeband profiles of identical dimensions in the longitudinal direction L in a single manufacturing step.

[0038] Another advantage of the edge band profile is that, in the longitudinal direction L of the profile, at least one first longitudinal edge side of at least one first strip core is arranged parallel to and spaced apart from at least one second longitudinal edge side of at least one second strip core.

[0039] It is also advantageous in the edge band profile that, in the longitudinal direction L of the profile, at least one first longitudinal edge side of at least one first strip core is arranged at least partially spaced apart from at least one second longitudinal edge side of at least one second strip core by the structural layer.

[0040] The edge band profiles produced in this way can now be separated economically and cost-effectively in subsequent manufacturing steps and used for narrow surface coating of, for example, panel elements, furniture panels, wood-based panels, worktops, chipboard, lightweight panels, interior finishing panels, doors, fiber cement panels and the like.

[0041] Furthermore, it has proven advantageous for the edge band profile that, in the longitudinal direction L of the profile, at least one core strip has a width B3 that is 0.2 to 25%, preferably 0.5 to 20%, smaller than the width B4 of the structural layer on at least one longitudinal edge side.

[0042] A further advantage of the edge band profile is that, in the longitudinal direction L of the profile, at least one strip core has a width B3 that is 0.2 mm to 15 mm, preferably 1 mm to 5 mm, smaller than the width B4 of the structural layer on at least one longitudinal edge side.

[0043] It is also advantageous in the edge band profile that the structural layer is U-shaped, so that the structural layer is arranged to enclose at least one strip core on three sides.

[0044] A further advantage of the edge banding profile is that the structural layer is arranged to enclose the entire circumference of at least one core strip. This advantageously encloses the B-material, allowing the use of materials / polymers / recyclates that would otherwise be unbondable. Furthermore, it eliminates any potential migration effects that could lead to a loss of adhesion.

[0045] This makes it possible to provide edgebanding profiles where the core is made of a different material than the structural layer. Another advantage is the significantly wider range of usable recycled materials in terms of color, quality (e.g., impurities), polymers, and polymer processing properties (e.g., MFI). This leads to economical and cost-effective production of edgebanding profiles, which are also sustainable, especially when using recycled materials. As a result, this edgebanding profile has a considerably lower carbon footprint than conventional edgebanding profiles.

[0046] Another advantage of the edgeband profile is that the material of at least one core strip is bonded to the structural layer via at least one functional layer. This functional layer acts as an adhesion promoter. Furthermore, the functional layer can be applied by co-extrusion or using a wet chemical process prior to post-co-extrusion.

[0047] Another advantage of the edge band profile is that the material of the at least one strip core is spaced away from the structural layer via at least one functional layer.

[0048] These advantageous measures make it possible to produce different materials of the core and the structural layer cost-effectively and economically using the known coextrusion or postcoextrusion process, and to join them together in a materially bonded and visually appealing way at the adjacent contact surfaces.

[0049] A major advantage regarding the sustainability of the edgeband profile is that the material of the at least one core strip and / or the structural layer contains renewable raw materials of 0.01 to 100%, preferably 20 to 100%, and particularly preferably 40 to 100%, as verified by mass balance analysis, e.g., using ISCC. Advantageously, this ensures that this edgeband profile has a significantly lower "CO2 footprint" than edgeband profiles in the known prior art.

[0050] Another advantage of edge banding profiles is that they promote the recycling of raw materials and, in particular, the reuse of recycled materials.

[0051] It has also proven advantageous for the edge band profile to have a coating at least partially on the front side.

[0052] A further advantage of the edge band profile is that the coating on the front side has a thickness of 1 to 350 µm, preferably 2 to 300 µm, particularly preferably 5 to 250 µm.

[0053] It is also advantageous that the coating on the front side is designed as a co-extruded or post-co-extruded layer, or as a paint application, or as a printing layer, or as a varnish layer.

[0054] This coating, whether applied as a paint layer or a printed layer, can advantageously be achieved, in particular, through multicolor printing, digital printing, gravure printing, and similar processes. In this advantageous configuration, the intensity and feel of the edgeband profile's surface can be further optimized by selecting the appropriate material, thickness, and shape of the coating. The coating can advantageously contain renewable raw materials from 0.01% to 100%, preferably 20% to 100%, and most preferably 40% to 100%.

[0055] All of this leads to an economical and cost-effective production of the profile arrangement as well as further optimization possibilities, especially for the surface or the appearance of the edge band profile.

[0056] A further advantage of the edge banding profile is that the back of the core and / or the structural layer has a functional layer, at least in sections. In addition to the economical and cost-effective production of the edge banding profile, it is also possible to optimize the fixation of the edge banding profile to an object by varying the functional layer. This can be achieved, for example, by designing the functional layer as a so-called adhesion promoter layer, a so-called hot melt adhesive layer, or a polymeric functional layer.

[0057] A further advantage of the edgeband profile is that at least one cover layer, for example in the form of a lacquer layer, with a thickness of 2 to 60 µm, preferably 5 to 30 µm, is arranged on the front side. It has also proven advantageous for the cover layer on the front side to comprise at least one acrylic polymer and to have a transmittance of at most 80% for visible light across its thickness, measured according to DIN EN ISO 13468-2:2006-07. The cover layer can advantageously contain renewable raw materials of 0.01 to 100%, preferably 20 to 100%, and particularly preferably 40 to 100%.

[0058] In addition to an aesthetically pleasing top surface of the edge band profile, mechanical protection is still possible, which, however, does not affect the appearance, in particular the optical structural effect of the edge band profile.

[0059] In a further advantageous embodiment of the edge band profile, it has been shown that the back of the strip core and / or the structural layer of the edge band profile was subjected to a surface treatment by a corona process, flame treatment process, plasma process, silicatization process and the like.

[0060] This allows for an optimized bond of the edge band profile for a wide variety of material combinations.

[0061] Another advantage of the edge banding profile is that the material of the core of the edge banding profile has a density of 0.2 g / cm³. 3 up to 0.85 g / cm³ 3 , preferably 0.40 g / cm² 3 up to 0.70 g / cm³ 3in accordance with DIN EN ISO 1183-1: 2019-09. This advantageously allows the weight of the edgeband profile to be reduced accordingly without affecting its stability and strength. Furthermore, the use of B-material is significantly reduced, making the edgeband profile more sustainable to manufacture.

[0062] In a further advantageous embodiment of the edge banding profile, it has been found that the material of the at least one core strip and / or the material of the structural layer contains light- and / or radiation-absorbing additives in an amount of 0.01 to 5 wt.%, preferably 0.02 to 3.0 wt.%, based on the total amount. In this embodiment of the edge banding profile, it can be optimally welded, for example on the narrow sides of furniture pieces, by means of laser welding processes known per se, through the targeted introduction of energy into the material of the at least one core strip and / or the material of the structural layer.

[0063] It has also proven advantageous that the material of the at least one core strip and / or the material of the structural layer contains at least one additive, partially containing inorganic and / or organic pigments, in an amount of 0.01 to 10 wt.%, preferably 0.02 to 3.0 wt.%, based on the total amount. This makes it possible to apply the edge banding profile cost-effectively and economically, for example, to the narrow sides of furniture, using all currently known radiation-activated methods.

[0064] Another advantage of the edge banding profile is that the material of the at least one core comprises 5 to 50 wt.%, preferably 10 to 45 wt.%, and particularly preferably 15 to 35 wt.%, based on its total weight, at least one filler, wherein the filler is selected in particular from silicates, carbonates, phosphates, sulfates, sulfides, and the like. It is further advantageous if the filler is selected from the group of layered silicates, as well as carbonates or sulfates of barium and calcium, and the like. In a particularly advantageous embodiment of the edge banding profile, the filler of the at least one core comprises in particular barium sulfate, calcium sulfate, calcium carbonate, talc, and wollastonite. The fillers can advantageously comprise renewable raw materials of 0.01 to 100%, preferably 20 to 100%, and particularly preferably 40 to 100%.

[0065] The material of at least one core strip and / or the structural layer is based on polyolefin, such as polypropylene (PP) or polyethylene (PE); a styrene-based polymer, such as polystyrene (PS) or styrene-butadiene copolymer with a predominant styrene content (SB) or acrylonitrile-styrene-acrylate copolymers (ASA) or acrylonitrile-butadiene-styrene copolymers (ABS) or styreneacrylonitrile (SAN); polybutylene terephthalate (PBT); polyethylene terephthalate (PET); polyoxymethylene (POM); polyamide (PA); polymethyl methacrylate (PMMA); polyphenylene oxide (PPO); polyetheretherketone (PEEK); polyphenylene sulfide (PPS); liquid crystal polymer (LCP); polyamide-imides (PAI); polyphenylsulfone (PPSU); polyaryletherketone (PAEK); polyacrylonitrile (PAN); polyetherketone (PEK); polyimide (PL); polyisobutene (PIB); Polyphthalamide (PPA); Polypyrrole (PPY); Polyurethane (PUR); Polyvinyl alcohol (PVA); Polyvinyl acetate (PVAC) and mixtures of at least two of these materials.

[0066] Furthermore, the edgeband profile is advantageously designed such that the material of the at least one core strip and / or the structural layer contains at least one of the following additives: stabilizers to improve resistance to light exposure, UV radiation, and weathering; stabilizers to improve thermal and thermo-oxidative resistance; stabilizers to improve hydrolytic resistance; stabilizers to improve acidolytic resistance; lubricants; demolding aids; color additives; crystallization-regulating substances and nucleating agents; flame retardants; impact modifiers; fillers; and / or plasticizers. The additives may advantageously comprise renewable raw materials in proportions of 0.01 to 100%, preferably 20 to 100%, and particularly preferably 40 to 100%.

[0067] Thus, an edge banding profile can be provided that is both economical and cost-effective to manufacture, but also realizes the functions known from the state of the art, such as adhesion strength values, peel strength values, and water resistance.

[0068] Another preferred embodiment relates to an edge band profile according to one of the previous embodiments, wherein the functional layer is based on a halogen-free polymeric material, preferably polypropylene (PP), acrylonitrile butadiene styrene copolymer (ABS), polymethyl methacrylate (PMMA), polyethylene terephthalate (PET), polyethylene (PE), styrene-ethylene butadiene styrene block copolymer (SEBS), polyamide (PA), thermoplastic olefin-based elastomer (TPO), thermoplastic urethane-based elastomer (TPU), thermoplastic copolyester (TPC), styrene block copolymers (SBS, SEBS, SEPS, SEEPS and MBS), thermoplastic copolyamide (TPA) and the like.

[0069] The polymeric material can advantageously contain renewable raw materials of 0.01 to 100%, preferably 20 to 100%, and particularly preferably 40 to 100%. This approach has the advantage that the material is readily available at low cost, easy to process, and also simple to chemically modify.

[0070] In a further preferred embodiment, the functional layer is designed as a thermoplastic functional layer, which makes it possible to fix an edge band profile according to the previously described embodiments without adhesive, i.e. without having to apply an additional so-called hot melt adhesive immediately before attaching it, and without leaving a visible joint on a narrow side of a lightweight panel.

[0071] Another preferred embodiment relates to an edge band profile according to at least one of the preceding embodiments, wherein the halogen-free polymeric material of the functional layer is a copolymer, preferably a graft copolymer, preferably a maleic anhydride-grafted polypropylene (PP-MAH). This measure has the advantage that the material composition, in particular the proportion of polar groups in the molecular structure, and thus the material properties, can be specifically adjusted.

[0072] Furthermore, it has proven extremely advantageous that the halogen-free polymeric material of the functional layer is selected from the group of polyurethanes (PUR), acrylates, epoxy resins, ethylene vinyl acetates (e.g. EVA dispersions), polyvinyl acetates (PVAC dispersions) and the like, as well as mixtures of two or more of the aforementioned substances.

[0073] A further advantage of the edge banding profile is that the halogen-free, polymeric material of the functional layer incorporates an adhesion promoter system, preferably in the form of aqueous dispersions or solutions in organic solvents of binder resins. These resins are selected in particular from the group consisting of polyurethanes, polyesters, acrylates, methyl methacrylates, epoxy resins, ethylene vinyl acetates, polyvinyl acetates, polyvinylidenes, natural rubber, and mixtures of two or more of the aforementioned binder groups. They can be used with or without the addition of crosslinking / activator components, e.g., based on polyisocyanates, amines, or peroxides. The halogen-free, polymeric material of the functional layer can be applied directly to the back of the core strip during the production of the edge banding profile.

[0074] It has also proven advantageous for the functional layer of the edgeband profile to have a thickness of 0.1 µm to 100 µm, preferably 0.2 µm to 75 µm, and particularly preferably 0.5 to 30 µm. This advantageously results not only in economical and cost-effective production of the edgeband profile, but also in the functional layer being optimally adaptable to the respective geometry of the edgeband profile.

[0075] The object of the invention, to provide a panel element, is achieved by a panel element such as furniture panel, wood-based panels, worktops, chipboard, lightweight panels, interior finishing panels, doors, fiber cement panels and the like, with at least one edge band profile, which has the advantageous embodiments of the previous sections.

[0076] The panel element, such as furniture panels, wood-based panels, worktops, chipboard, lightweight panels, interior finishing panels, doors, fiber cement panels and the like, is further advantageously designed such that at least one edge band profile is arranged on at least one narrow surface.

[0077] Furthermore, the plate element is advantageously designed such that at least two edge band profiles are arranged on narrow surfaces opposite each other.

[0078] It is also advantageous for this plate element that the ratio of the width B10 of the plate core to the width B3 of the strip core is at least 1.1; preferably at least 1.2; particularly preferably at least 1.3.

[0079] The edge band profile will now be described in more detail using these non-restrictive examples.

[0080] They show: Fig. 1: Perspective view of a plate element with at least one edge band profile, Fig. 2: Perspective view of an edge band profile, Fig. 3: Perspective view of another edge band profile, Fig. 4: Perspective view of another edge band profile.

[0081] In the Fig. Figure 1 is a perspective representation of a panel element 1, such as a furniture panel with at least one edge band profile 2.

[0082] The production process involves a narrow-surface coating method for, preferably rectangular, panel elements, in particular furniture panels, wood-based panels, worktops, chipboard, lightweight panels, interior finishing panels, doors, fiber cement panels or the like. - wherein the narrow surface coating is at least partially carried out by means of edge band profiles 2, 2' which have a strip core 3 made of B-material, for example recycled material, and - wherein the core of the strip 3, viewed in profile cross-section, is covered at least on its outer side on its longitudinal side covering the narrow surface and on at least one transverse side, preferably to be machined, with polymeric A-material, which is characterized by the fact that the two edge band profiles 2' attached opposite each other to the plate element 1, which in the joint areas at the corners of the plate element 1 cover the two other edge band profiles 2, consist at least in the joint areas only of A-material.

[0083] An advantage of this method is that even on a post-processed transverse side, the core of the strip 3 remains covered with A-material.

[0084] Another advantage of the method is that in the joint areas, the corners of the plate element 1 are rounded off during the post-processing of the covering edge band profiles, so that the plate corners are formed only of A-material.

[0085] Another advantage of the method is that the edge band profiles covered in the corner areas have a core 3 made of B-material, while the overlapping edge band profiles have a core 4 made of A-material only.

[0086] A further advantage of the method is that the edge banding profile 2 is manufactured such that the thickness D3 of the core strip 3,3' made of B-material is at most 99%, preferably at most 90%, and particularly preferably at most 80% of the thickness D4 of the edge banding profiles 2. In this embodiment, the edge banding profile 2 is manufactured such that the thickness D3 of the core strip 3,3' made of B-material is at most 99%, at most 80% of the thickness D4 of the edge banding profiles 2.

[0087] It has further proven advantageous in the process that the edge banding profile 2 is manufactured such that the difference in thickness D4 of the edge banding profiles 2 made from A-material to the thickness D3 of the strip core 3,3' made from B-material is at least 0.8 mm, preferably at least 0.5 mm, and particularly preferably at least 0.3 mm. In this embodiment, the edge banding profile 2 is manufactured such that the difference in thickness D4 of the edge banding profiles 2 made from A-material to the thickness D3 of the strip core 3,3' made from B-material is at least 0.8 mm.

[0088] It has also been found to be advantageous in the method that the edge band profile 2 is manufactured such that the difference between the width B10 of the core 10 of the panel element 1 and the width B3 of the core 3,3' made of B-material is at least 4 mm, preferably at least 8 mm, and particularly preferably at least 4 mm. In this embodiment, the edge band profile 2 is manufactured such that the difference between the width B10 of the core 10 of the panel element 1 and the width B3 of the core 3,3' made of B-material is at least 3 mm.

[0089] One advantage of the method is that the edge banding profiles 2 covered in the corner areas have a core 3,3' made of B-material, while the overlapping edge banding profiles 2' have a core made only of A-material. Furthermore, the overlapping edge banding profiles 2' are always shorter in the longitudinal direction L than the covered edge banding profiles 2 with a core 3,3' made of B-material.

[0090] A further advantage of the method is that the covering edge band profiles 2' are produced by means of clocked extrusion, in which the strip core 3 consists optionally of A-material or B-material according to the clocks, and that the clocked extrusion is carried out in such a way that the corner areas of the plate element 1 of the forming section consist only of A-material.

[0091] An equally advantageous aspect of the method is that the edge band profiles 2 covered in the corner areas have a core made of B-material, while the covering edge band profiles 2', in which the core is optionally made of A-material or B-material according to the timing, each have an end face made only of A-material.

[0092] A further advantage of the method is that the edge band profiles 2 covered in the corner areas have a core 3,3' made of B-material, which are always longer in the longitudinal direction L of the profile than the covering edge band profiles 2', and that the covering edge band profiles 2' consist completely of a core 3,3' made of A-material.

[0093] The plate element 1 is characterized by the fact that the edge band profile 2 is attached, in particular fixed, to at least one narrow surface 15,15' of a plate core 10.

[0094] In this embodiment, the plate element 1 is designed such that the edge band profile 2 is bonded to, in particular fixed to, the narrow surface 15,15' of the plate core 10 without an additional functional layer, in particular an adhesion promoter layer.

[0095] The plate element 1 is designed such that an edge band profile 2 is fixed to the left side on the narrow surface 15, the width B4 of which is greater than the width B10 of the plate core 10.

[0096] The edge band profile 2 is further designed such that the width B3 of the strip core 3 is smaller than the width B10 of the panel core 10.

[0097] The longitudinal edge L42 of the structural layer 4 thus extends beyond the top surface 11 of the plate element 1. The longitudinal edge L41 of the structural layer 4 extends beyond the bottom surface 12 of the plate element 1.

[0098] In a subsequent operation, the longitudinal edge sides L41, L42 of the structural layer 4 must now be machined so that the width B4 of the structural layer 4 corresponds to the width B10 of the core of the plate 10.

[0099] Another edge band profile 2 is arranged on the right narrow surface 15' of the panel element 1. The edge band profile 2 is fixed to the narrow surface 15' of the panel element 1.

[0100] The width B4 of the structural layer 4 of the edge band profile 2 is the same as the width B10 of the plate element 10.

[0101] The width B3 of the core strip 3 of the edge band profile 2 is smaller than the width B10 of the panel element 10, and also smaller than the width B4 of the structural layer 4.

[0102] The longitudinal edge side 41 of the structural layer 4 is arranged flush with the coating element 9 of the plate element 1 arranged on the top side 11.

[0103] The longitudinal edge side 42 of the structural layer 4 of the edge band profile 2 is arranged flush with the underside 12 of the plate element 1.

[0104] The plate element 1 is further designed such that the ratio of the width B10 of the plate core 10 to the width B3 of the strip core 3,3' is at least 1.1; preferably at least 1.2; particularly preferably at least 1.3.

[0105] The plate element 1 is also designed such that no edge band profile is arranged on the front, visible narrow side 15 of the plate core 10, so that the structure or construction of the edge band profile 2 arranged on the left narrow surface 15, as well as the edge band profile 2 arranged on the right narrow surface 15', is recognizable.

[0106] The panel element 1 is further designed such that at least two edge band profiles 2 are arranged on opposite narrow surfaces 15, 15', wherein the two edge band profiles 2 each have a core 3, 3' made of B-material. In this embodiment, the panel element 1 is designed such that the two edge band profiles 2 are arranged on opposite narrow surfaces 15, 15' such that the core 3, 3' is visible on the respective end face 21.

[0107] Furthermore, in this embodiment, the plate element 1 is designed such that a profile element 5 is arranged, in particular fixed, on the rear, non-visible narrow surface of the plate core.

[0108] The profile element 5 is designed such that it has at least one core 3, which has at least one end face 31,32 and at least one longitudinal edge face L 31,32.

[0109] In this embodiment, the profile element 5 is formed on the plate element 1 such that the longitudinal edge sides L 31, L 32 are arranged flush with the top 11 and the bottom 12 of the plate element 1.

[0110] Furthermore, the profile element 5 is arranged on the plate element 1 in such a way that its free ends completely cover the end faces 22 of the edge band profile 2.

[0111] The edge band profiles 2, which are covered in the corner areas and have a core 3 made of B-material, are covered by the profile elements 5, in which the core is optionally made of A-material or B-material according to the timing, and each has one end face made of A-material only.

[0112] A further advantage of the method is that the edge band profiles 2 covered in the corner areas have a core 3 made of B-material, which are always longer in the longitudinal direction of the profile than the covering edge band profiles, and that the covering edge band profiles consist entirely of a core made of A-material.

[0113] In the Fig. Figure 2 shows a perspective view of an edge band profile 2.

[0114] The edge banding profile 2 for fastening to a panel element, in particular for the narrow surface coating of furniture panels, wood-based panels, worktops, chipboard, lightweight panels, interior finishing panels, doors, fiber cement panels or the like, with at least one core 3, 3' having at least one end face 31, 32 and at least one longitudinal edge face L31, L32, and at least one structural layer 4 connected to the core 3, 3' having at least one longitudinal edge face L41, L42, wherein at least one core 3, 3' and the structural layer 4 at least partially comprise a polymeric material, wherein at least one core 3, 3' and the structural layer 4 have a width B3, B4 of 5 to 120 mm, preferably 5 to 105 mm, and wherein at least one core 3, 3' and the structural layer 4 have a thickness D3, D4 of 0.2 to 12 mm, preferably 0.4 to 10 mm, is shown. by the fact that at least one inguinal core 3,3' has at least partially a smaller width B3 than the width B4 of the structural layer 4, that at least one strip core 3,3' has at least partially a smaller thickness D3 than the thickness D4 of the structural layer 4, that in the longitudinal direction L at least one strip core 3,3' is arranged at least partially spaced from at least one longitudinal edge side L41,L42 of the structural layer 4 on at least one of its longitudinal edge sides L31,L32.

[0115] Furthermore, the edge band profile 2 is also designed such that the thickness D3 of the strip core 3,3' is at most 99%, preferably at most 90%, particularly preferably at most 80% of the thickness D4 of the structural layer 4.

[0116] It has further proven advantageous for the edge band profile 2 that the difference between the thickness D4 of the structural layer 4 and the thickness D3 of the core 3.3' is at least 0.8 mm, preferably at least 0.5 mm, and particularly preferably at least 0.3 mm. In this embodiment, the edge band profile 2 is designed such that the difference between the thickness D4 of the structural layer 4 and the thickness D3 of the core 3.3' is 0.5 mm.

[0117] The edge band profile 2 is further advantageously designed such that in the longitudinal direction L of the profile at least one strip core 3,3' has a width B3 that is 0.2 to 25%, preferably 0.5 to 20%, smaller than the width B4 of the structural layer 4 on at least one longitudinal edge side L31,L32.

[0118] A further advantage of the edge band profile 2 is that, in the longitudinal direction L of the profile, at least one core 3,3' has a width B3 that is 0.2 to 15 mm, preferably 1 to 5 mm, smaller than the width B4 of the structural layer 4 on at least one longitudinal edge side L31, L32. In this embodiment, the edge band profile 2 is designed such that, in the longitudinal direction of the profile, the core 3,3' has a width B3 that is 4 mm smaller than the width B4 of the structural layer 4 on at least one longitudinal edge side L31, L32.

[0119] The edge band profile 2 is also designed such that the material of the at least one strip core 3,3' is connected to the structural layer 4 via at least one functional layer 6.

[0120] Another advantage of the edge band profile 2 is that the structural layer 4 and the functional layer 6 are arranged enclosing three sides of the at least one strip core 3,3'.

[0121] Furthermore, the edge band profile 2 is designed such that the material of the at least one core 3,3' and / or the structural layer 4 comprises renewable raw materials of 0.01 to 100%, preferably 20 to 100%, and particularly preferably 40 to 100%, as verified by mass balance analysis, e.g., via ISCC. In this embodiment, the edge band profile 2 is designed such that the material of the at least one core 3,3' and / or the structural layer 4 comprises renewable raw materials of 60%, as verified by mass balance analysis, e.g., via ISCC.

[0122] Furthermore, the edge band profile 2 is designed such that the material of at least one strip core 3,3' has a density of 0.2 g / cm³ 3 up to 0.85 g / cm³ 3 , preferably 0.40 g / cm² 3 up to 0.70 g / cm³ 3 according to DIN EN ISO 1183-1: 2019-09.

[0123] In this embodiment, the edge band profile 2 is designed such that the material of the at least one strip core 3,3' has a density of 0.55 g / cm³ 3 according to DIN EN ISO 1183-1: 2019-09.

[0124] The edge banding profile 2 is further configured such that the material of the at least one core strip 3,3' comprises at least 5 to 80 wt.%, preferably 10 to 75 wt.%, and particularly preferably 15 to 70 wt.%, of recycled material based on the total weight. In this embodiment, the edge banding profile 2 is configured such that the material of the at least one core strip 3,3' comprises 65 wt.% of recycled material based on the total weight.

[0125] Advantageously, the edge band profile 2 is designed such that the material of the at least one core 3,3' and / or the material of the structural layer 4 contains light- and / or radiation-absorbing additives in an amount of 0.01 to 5 wt.%, preferably 0.02 to 3.0 wt.%, based on the total amount. In this embodiment, the edge band profile 2 is designed such that the material of the at least one core 3,3' and / or the material of the structural layer 4 contains light- and / or radiation-absorbing additives in an amount of 1.8 wt.%, based on the total amount.

[0126] A further advantage of the edge banding profile 2 is that the material of the at least one core 3,3' and / or the material of the structural layer 4 contains at least one additive, partially containing inorganic and / or organic pigments, in an amount of 0.01 to 10 wt.%, preferably 0.02 to 3.0 wt.%, based on the total amount. In this embodiment, the edge banding profile 2 is designed such that the material of the at least one core 3,3' and / or the material of the structural layer 4 contains at least one additive, partially containing inorganic and / or organic pigments, in an amount of 0.7 wt.%, based on the total amount.

[0127] The edge band profile 2 is advantageously designed such that the material of the at least one core 3,3' and / or the structural layer 4 contains at least one of the following additives: stabilizers to improve resistance to light exposure, UV radiation and weathering; stabilizers to improve thermal and thermo-oxidative resistance; stabilizers to improve hydrolytic resistance; stabilizers to improve acidolytic resistance; lubricants; demolding aids; color additives; crystallization-regulating substances and nucleating agents; flame retardants; impact modifiers; fillers and / or plasticizers.

[0128] In the Fig. Figure 3 shows a perspective view of an edge band profile 2.

[0129] The edge banding profile 2 for fastening to a panel element, in particular for the narrow surface coating of furniture panels, wood-based panels, worktops, chipboard, lightweight panels, interior finishing panels, doors, fiber cement panels or the like, with at least one core 3, 3' having at least one end face 31, 32 and at least one longitudinal edge face L31, L32, and at least one structural layer 4 connected to the core 3, 3' having at least one longitudinal edge face L41, L42, wherein at least one core 3, 3' and the structural layer 4 at least partially comprise a polymeric material, wherein at least one core 3, 3' and the structural layer 4 have a width B3, B4 of 5 to 120 mm, preferably 5 to 105 mm, and wherein at least one core 3, 3' and the structural layer 4 have a thickness D3, D4 of 0.2 to 12 mm, preferably 0.4 to 10 mm, is shown. by the fact that at least one inguinal core 3,3' has at least partially a smaller width B3 than the width B4 of the structural layer 4, that at least one strip core 3,3' has at least partially a smaller thickness D3 than the thickness D4 of the structural layer 4, that in the longitudinal direction L at least one strip core 3,3' is arranged at least partially spaced from at least one longitudinal edge side L41,L42 of the structural layer 4 on at least one of its longitudinal edge sides L31,L32, that at least one first end face 31 of at least one first strip core 3 is arranged spaced from at least one second end face 32 of at least one second strip core 3'.

[0130] Furthermore, the edge band profile 2 is also designed such that the thickness D3 of the strip core 3,3' is at most 99%, preferably at most 90%, particularly preferably at most 80% of the thickness D4 of the structural layer 4.

[0131] It has further proven advantageous for the edge band profile 2 that the difference between the thickness D4 of the structural layer 4 and the thickness D3 of the core 3.3' is at least 0.8 mm, preferably at least 0.5 mm, and particularly preferably at least 0.3 mm. In this embodiment, the edge band profile 2 is designed such that the difference between the thickness D4 of the structural layer 4 and the thickness D3 of the core 3.3' is 0.6 mm.

[0132] Furthermore, the edge band profile 2 is designed such that in the longitudinal direction L at least one first end face 31 of at least one first strip core 3 is arranged at least partially spaced apart from at least one second end face 32 of at least one second strip core 3' by the structural layer 4.

[0133] The edge band profile 2 is further advantageously designed such that in the longitudinal direction L of the profile at least one strip core 3,3' has a width B3 that is 0.2 to 25%, preferably 0.5 to 20%, smaller than the width B4 of the structural layer 4 on at least one longitudinal edge side L31,L32.

[0134] A further advantage of the edge band profile 2 is that in the longitudinal direction L of the profile at least one strip core 3,3' has a width B3 that is 0.2 to 15 mm, preferably 1 to 5 mm, smaller than the width B4 of the structural layer 4 on at least one longitudinal edge side L31,L32.

[0135] In this embodiment, the edge band profile 2 is designed such that, in the longitudinal direction of the profile, the core of the strip 3,3' has a width B3 that is 3 mm smaller than the width B4 of the structural layer 4 on at least one longitudinal edge side L 31, L 32.

[0136] The edge band profile 2 is also designed such that the material of the at least one strip core 3,3' is connected to the structural layer 4 via at least one functional layer 6.

[0137] Another advantage of the edge band profile 2 is that the structural layer 4 and the functional layer 6 are arranged to enclose the entire circumference of the at least one strip core 3,3'.

[0138] Furthermore, the edge band profile 2 is designed such that the material of the at least one core 3,3' and / or the structural layer 4 comprises renewable raw materials of 0.01 to 100%, preferably 20 to 100%, and particularly preferably 40 to 100%, as verified by mass balance analysis, e.g., via ISCC. In this embodiment, the edge band profile 2 is designed such that the material of the at least one core 3,3' and / or the structural layer 4 comprises renewable raw materials of 50%, as verified by mass balance analysis, e.g., via ISCC.

[0139] Furthermore, the edge band profile 2 is designed such that the material of at least one strip core 3,3' has a density of 0.2 g / cm³ 3 up to 0.85 g / cm³ 3 , preferably 0.40 g / cm² 3 up to 0.70 g / cm³ 3according to DIN EN ISO 1183-1: 2019-09. In this embodiment, the edge band profile 2 is designed such that the material of the at least one core 3,3' has a density of 0.45 g / cm³. 3 according to DIN EN ISO 1183-1: 2019-09.

[0140] The edge banding profile 2 is further configured such that the material of the at least one core strip 3,3' comprises at least 5 to 80 wt.%, preferably 10 to 75 wt.%, and particularly preferably 15 to 70 wt.%, of recycled material based on the total weight. In this embodiment, the edge banding profile 2 is configured such that the material of the at least one core strip 3,3' comprises 50 wt.% of recycled material based on the total weight.

[0141] Advantageously, the edge band profile 2 is designed such that the material of the at least one core 3,3' and / or the material of the structural layer 4 contains light- and / or radiation-absorbing additives in an amount of 0.01 to 5 wt.%, preferably 0.02 to 3.0 wt.%, based on the total amount. In this embodiment, the edge band profile 2 is designed such that the material of the at least one core 3,3' and / or the material of the structural layer 4 contains light- and / or radiation-absorbing additives in an amount of 2 wt.%, based on the total amount.

[0142] A further advantage of the edge banding profile 2 is that the material of the at least one core 3,3' and / or the material of the structural layer 4 contains at least one additive, partially containing inorganic and / or organic pigments, in an amount of 0.01 to 10 wt.%, preferably 0.02 to 3.0 wt.%, based on the total amount. In this embodiment, the edge banding profile 2 is designed such that the material of the at least one core 3,3' and / or the material of the structural layer 4 contains at least one additive, partially containing inorganic and / or organic pigments, in an amount of 0.5 wt.%, based on the total amount.

[0143] The edge band profile 2 is advantageously designed such that the material of the at least one core 3,3' and / or the structural layer 4 contains at least one of the following additives: stabilizers to improve resistance to light exposure, UV radiation and weathering; stabilizers to improve thermal and thermo-oxidative resistance; stabilizers to improve hydrolytic resistance; stabilizers to improve acidolytic resistance; lubricants; demolding aids; color additives; crystallization-regulating substances and nucleating agents; flame retardants; impact modifiers; fillers and / or plasticizers.

[0144] In the Fig. Figure 4 shows a perspective view of another edge band profile.

[0145] The edge banding profile 2 for fastening to a panel element, in particular for the narrow surface coating of furniture panels, wood-based panels, worktops, chipboard, lightweight panels, interior finishing panels, doors, fiber cement panels or the like, with at least one core 3, 3' having at least one end face 31, 32 and at least one longitudinal edge face L31, L32, and at least one structural layer 4 connected to the core 3, 3' having at least one longitudinal edge face L41, L42, wherein at least one core 3, 3' and the structural layer 4 at least partially comprise a polymeric material, wherein at least one core 3, 3' and the structural layer 4 have a width B3, B4 of 5 to 120 mm, preferably 5 to 105 mm, and wherein at least one core 3, 3' and the structural layer 4 have a thickness D3, D4 of 0.2 to 12 mm, preferably 0.4 to 10 mm, is shown. by the fact that at least one inguinal core 3,3' has at least partially a smaller width B3 than the width B4 of the structural layer 4, that at least one strip core 3,3' has at least partially a smaller thickness D3 than the thickness D4 of the structural layer 4, that in the longitudinal direction L at least one strip core 3,3' is arranged at least partially spaced from at least one longitudinal edge side L41,L42 of the structural layer 4 on at least one of its longitudinal edge sides L31,L32, that at least one first end face 31 of at least one first strip core 3 is arranged spaced from at least one second end face 32 of at least one second strip core 3'.

[0146] Furthermore, the edge band profile 2 is also designed such that the thickness D3 of the strip core 3,3' is at most 99%, preferably at most 90%, particularly preferably at most 80% of the thickness D4 of the structural layer 4.

[0147] It has further proven advantageous for the edge band profile 2 that the difference between the thickness D4 of the structural layer 4 and the thickness D3 of the core 3.3' is at least 0.8 mm, preferably at least 0.5 mm, and particularly preferably at least 0.3 mm. In this embodiment, the edge band profile 2 is designed such that the difference between the thickness D4 of the structural layer 4 and the thickness D3 of the core 3.3' is 0.7 mm.

[0148] Furthermore, the edge band profile 2 is designed such that in the longitudinal direction L at least one first end face 31 of at least one first strip core 3 is arranged at least partially spaced apart from at least one second end face 32 of at least one second strip core 3' by the structural layer 4.

[0149] Furthermore, the edge band profile 2 is designed such that in the longitudinal direction L of the profile at least one first longitudinal edge side L31 of at least one first strip core 3 is arranged at least partially spaced apart from at least one second longitudinal edge side L32 of at least one second strip core 3' by the structural layer 4.

[0150] The edge band profile 2 is further designed such that in the longitudinal direction L of the profile at least one first longitudinal edge side L31 of at least one first strip core 3 is arranged at least partially spaced apart from at least one second longitudinal edge side L32 of at least one second strip core 3'.

[0151] Furthermore, the edge band profile 2 is designed such that in the longitudinal direction L of the profile at least one first longitudinal edge side L31 of at least one first strip core 3 is arranged parallel to and spaced apart from at least one second longitudinal edge side L32 of at least one second strip core 3'.

[0152] The edge band profile 2 is further advantageously designed such that in the longitudinal direction L of the profile at least one strip core 3,3' has a width B3 that is 0.2 to 25%, preferably 0.5 to 20%, smaller than the width B4 of the structural layer 4 on at least one longitudinal edge side L31,L32.

[0153] A further advantage of the edge band profile 2 is that, in the longitudinal direction L of the profile, at least one core 3,3' has a width B3 that is 0.2 to 15 mm, preferably 1 to 5 mm, smaller than the width B4 of the structural layer 4 on at least one longitudinal edge side L31, L32. In this embodiment, the edge band profile 2 is designed such that, in the longitudinal direction of the profile, the core 3,3' has a width B3 that is 4 mm smaller than the width B4 of the structural layer 4 on at least one longitudinal edge side L31, L32.

[0154] In this embodiment, the edge band profile 2 is designed such that the width B3 and the thickness D3 of the strip core 3,3' are the same.

[0155] However, it is also within the scope of the invention that the edge band profile 2 is designed such that the thickness D3 and / or the width B3 of the strip core 3 has different dimensions.

[0156] Another advantage of the edge band profile 2 is that the structural layer 4 is arranged to enclose the entire circumference of the at least one strip core 3,3'.

[0157] The edge band profile 2 is also designed such that the material of the at least one strip core 3,3' is connected to the structural layer 4 via at least one functional layer 6.

[0158] Furthermore, in this embodiment, the edge band profile 2 is designed such that the material of the at least one strip core 3,3' is arranged spaced apart from the structural layer 4 via at least one functional layer 6.

[0159] Furthermore, the edge band profile 2 is designed such that the material of the at least one core 3,3' and / or the structural layer 4 comprises renewable raw materials of 0.01 to 100%, preferably 20 to 100%, and particularly preferably 40 to 100%, as verified by mass balance analysis, e.g., via ISCC. In this embodiment, the edge band profile 2 is designed such that the material of the at least one core 3,3' and / or the structural layer 4 comprises renewable raw materials of 85%, as verified by mass balance analysis, e.g., via ISCC.

[0160] Furthermore, the edge band profile 2 is designed such that the material of at least one strip core 3,3' has a density of 0.2 g / cm³3 up to 0.85 g / cm³ 3 , preferably 0.40 g / cm² 3 up to 0.70 g / cm³ 3 according to DIN EN ISO 1183-1: 2019-09. In this embodiment, the edge band profile 2 is designed such that the material of the at least one core 3,3' has a density of 0.6 g / cm³. 3 according to DIN EN ISO 1183-1: 2019-09.

[0161] The edge band profile 2 is further configured such that the material of the at least one core 3,3' comprises at least 5 to 80 wt.%, preferably 10 to 75 wt.%, and particularly preferably 15 to 70 wt.%, of recycled material based on the total weight. In this embodiment, the edge band profile 2 is configured such that the material of the at least one core 3,3' comprises 75 wt.% of recycled material based on the total weight.

[0162] Advantageously, the edge band profile 2 is designed such that the material of the at least one core 3,3' and / or the material of the structural layer 4 contains light- and / or radiation-absorbing additives in an amount of 0.01 to 5 wt.%, preferably 0.02 to 3.0 wt.%, based on the total amount. In this embodiment, the edge band profile 2 is designed such that the material of the at least one core 3,3' and / or the material of the structural layer 4 contains light- and / or radiation-absorbing additives in an amount of 1 wt.%, based on the total amount.

[0163] A further advantage of the edge banding profile 2 is that the material of the at least one core 3,3' and / or the material of the structural layer 4 contains at least one additive, partially containing inorganic and / or organic pigments, in an amount of 0.01 to 10 wt.%, preferably 0.02 to 3.0 wt.%, based on the total amount. In this embodiment, the edge banding profile 2 is designed such that the material of the at least one core 3,3' and / or the material of the structural layer 4 contains at least one additive, partially containing inorganic and / or organic pigments, in an amount of 0.8 wt.%, based on the total amount.

[0164] The edge band profile 2 is advantageously designed such that the material of the at least one core 3,3' and / or the structural layer 4 contains at least one of the following additives: stabilizers to improve resistance to light exposure, UV radiation and weathering; stabilizers to improve thermal and thermo-oxidative resistance; stabilizers to improve hydrolytic resistance; stabilizers to improve acidolytic resistance; lubricants; demolding aids; color additives; crystallization-regulating substances and nucleating agents; flame retardants; impact modifiers; fillers and / or plasticizers.

[0165] In this embodiment, the edge band profile 2 is designed such that the front surface 3 of the structural layer 4 has a coating at least in sections. Furthermore, the edge band profile 2 is designed such that the coating on the front surface 3 of the structural layer 4 is formed as a co-extruded or post-co-extruded layer, as a color application, or as a printed layer.

[0166] The coating on the front of the edge band profile 2 is essentially a single color.

[0167] The coating on the front side 3 of the edge band profile 2 has a thickness of 1 to 350 µm, preferably 2 to 300 µm, particularly preferably 5 to 250 µm.

[0168] In this embodiment, the coating thickness is 25 µm.

[0169] The edge band profile 2 can further be designed such that at least one cover layer 5 with a thickness of 2 to 60 µm, preferably 5 to 30 µm, is arranged on the coating on the front side 3. In this embodiment, the thickness of the cover layer is 10 µm.

[0170] The edge banding profile 2 is therefore extremely versatile and can be applied to a wide variety of objects such as furniture panels, wood-based panels, worktops, chipboard, lightweight panels, interior finishing panels, doors, fiber cement panels, and the like. In addition to protecting the narrow side of, for example, a furniture panel, it can also achieve visual and tactile benefits. For instance, worktops with an edge banding profile 1 can have a visually appealing and tactilely perceptible structural effect that was previously unattainable. This effect, especially when the edge banding profile is machined / milled along its longitudinal edges, significantly improves and optimizes the overall appearance of the panel. QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] DE 9015079 U1

[0006] DE 3732810C1 [0007, 0023] DE 202015100800 U1

[0008] Cited non-patent literature

[0000] DIN EN ISO 1183-1: 2019-09 [0061, 0122, 0123, 0139, 0160]

Claims

[1] Method for narrow-area coating of, preferably rectangular, panel elements (1), in particular furniture panels, wood-based panels, worktops, particleboard, lightweight panels, interior finishing panels, doors, fiber cement panels or the like, - wherein the narrow surface coating is at least partially carried out by means of edge band profiles (2, 2') which have a strip core (3) made of B-material, for example recycled material, and - wherein the strip core (3) is covered with polymeric A-material at least on its outer side covering the narrow surface (L31,L32) and on at least one transverse side, preferably to be machined, as seen in the profile cross-section, characterized by, that the two edge band profiles (2') attached opposite each other to the plate element (1), which in the joint areas at the corners of the plate element (1) cover the two other edge band profiles (2), consist at least in the joint areas only of A-material. [2] Method according to claim 1, characterized by , that even on a reworked transverse side the core of the strip remains covered with A-material. [3] Method according to claim 1 or 2, characterized by , that in the joint areas a post-processing of the covering edge band profiles (2') rounding off the corners of the plate element (1) takes place, so that the corners of the plate element (1) are formed only of A-material. [4] Method according to any one of claims 1 to 3, characterized by, that the edge band profiles (2) covered in the corner areas have a core (3) made of B-material, while the overlapping edge band profiles (2') have a core made of A-material only. [5] Method according to any one of claims 1 to 4, characterized by , that both the edge band profiles (2') covering the corner areas outside the corner areas and the covered edge band profiles (2) have a strip core (3) made of B-material. [6] Method according to claim 5, characterized by , that the overlapping edge band profiles (2') are produced by means of clocked extrusion, in which the strip core is optionally made of A-material or B-material according to the clocking, and that the clocked extrusion is carried out in such a way that the sections forming the corner areas of the plate element (1) consist only of A-material. [7] Edge band profile (2, 2') for carrying out the method according to one of claims 1 to 6, with a strip core (3) made of B-material, in particular recycled material, wherein the strip core (3) is covered with polymeric A-material at least on the outside of its longitudinal side covering the narrow surface and on at least one transverse side to be machined, preferably by machining. [8] Edge band profile (2,2') according to claim 7, characterized by , that the core of the strip (3) has sections made of B-material when viewed in the profile direction, which alternate with sections made of A-material. [9] Edge band profile (2,2') according to claims 7 to 8, characterized by , that the structural layer (4) is arranged to enclose the entire perimeter of the at least one core strip (3). [10] Edge band profile (2,2') according to claims 7 to 9, characterized by, that the material of the core strip (3) of the edge band profile (2) has a density of 0.2 g / cm³ 3 up to 0.85 g / cm³ 3 , preferably 0.40 g / cm² 3 up to 0.70 g / cm³ 3 according to DIN EN ISO 1183-1: 2019-09. [11] Edge band profile (2,2') according to claims 7 to 10, characterized by , that in the longitudinal direction L at least one first longitudinal edge side (L31) of at least one first rib core (3) is arranged at least partially spaced apart from at least one second longitudinal edge side (L32) of at least one second rib core (3'). [12] Edge band profile (2,2') according to claims 7 to 11, characterized by , that in the longitudinal direction L at least one first longitudinal edge side (L31) of at least one first strip core (3) is arranged at least partially spaced apart from at least one second longitudinal edge side (L32) of at least one second strip core (3') by the structural layer (4) consisting of A-material. [13] Plate element (1) produced by a method according to any one of claims 1 to 6.

Images