DE10300779A1 - Production of a laminated plate, useful as wall and floor tiles, comprising a natural stone plate having a stabilizing layer and a support layer comprises use of a polyurethane adhesive - Google Patents

Production of a laminated plate, useful as wall and floor tiles, comprising a natural stone plate having a stabilizing layer and a support layer comprises use of a polyurethane adhesive Download PDF

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DE10300779A1
DE10300779A1 DE10300779A DE10300779A DE10300779A1 DE 10300779 A1 DE10300779 A1 DE 10300779A1 DE 10300779 A DE10300779 A DE 10300779A DE 10300779 A DE10300779 A DE 10300779A DE 10300779 A1 DE10300779 A1 DE 10300779A1
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layer
fibers
natural stone
polyurethane adhesive
embedded
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Guenter Schraps
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/002—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising natural stone or artificial stone
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/304—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/245—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it being a foam layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B9/047—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material made of fibres or filaments
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
    • C08G18/72—Polyisocyanates or polyisothiocyanates
    • C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
    • C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
    • C08G18/7657—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
    • C09J175/04—Polyurethanes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/101—Glass fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2266/00—Composition of foam
    • B32B2266/02—Organic
    • B32B2266/0214—Materials belonging to B32B27/00
    • B32B2266/0278—Polyurethane
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2305/00—Condition, form or state of the layers or laminate
    • B32B2305/02—Cellular or porous
    • B32B2305/022—Foam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2318/00—Mineral based
    • B32B2318/04—Stone
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2327/00—Polyvinylhalogenides
    • B32B2327/06—PVC, i.e. polyvinylchloride
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2607/00—Walls, panels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Laminated Bodies (AREA)

Abstract

A process for the production of a laminated plate comprising a natural stone plate having a stabilizing layer, a support layer of rigid polyurethane foam and a further stabilizing layer whereby the fibers in the stabilizing layer are embedded in a polyurethane adhesive that is applied wet; the support layer is applied to the wet adhesive and the fibers in the other stabilizing layer are applied followed by curing under pressure. A process for the production of a laminated plate (I) comprising a natural stone plate having a stabilizing layer in the form of fibers embedded in resin, a support layer of polyurethane and a further stabilizing layer in the form of fibers embedded in resin whereby the fibers in the stabilizing layer are embedded in a polyurethane adhesive that is applied wet; the support layer is a polyurethane rigid-foam sheet that is applied to the wet polyurethane adhesive and the fibers in the other stabilizing layer are applied and the resulting layer structure is cured in a press under pressure. An Independent claim is included for the resulting laminated plate (I).

Description

Die Erfindung betrifft ein Verfahren zum Herstellen einer Verbundplatte nach dem Oberbegriff des Anspruchs 1.The invention relates to a method for producing a composite panel according to the preamble of the claim 1.

Aus EP 1 153 738 A1 ist ein Verfahren zum Herstellen einer großformatigen Verbundplatte bekannt, bei dem beidseitig von einer Natursteinplatte jeweils eine Stabilisierungsschicht in Form einer in einem Harz eingebetteten Mineralfasermatte angebracht und in einem vorbestimmten Abstand zur Natursteinplatte jeweils eine rückwärtige Platte in Form einer in einem Harz eingebetteten Mineralfasermatte angeordnet wird, wonach die dadurch gebildeten beiden Zwischenräume mit einem Granulat gefüllt und anschließend ausgeschäumt werden. Schließlich wird die Natursteinplatte längs ihrer Mittelebene zerteilt. Bei den sich hierbei ergebenden Verbundplatten weist der auf der Natursteinplatte befindliche Schichtaufbau eine zu hohe Elastizität auf, so daß sich bei Krafteinwirkung zunächst eine Durchbiegung der Natursteinplatte ergibt, bevor eine Kraftübertragung stattfindet. Dies kann zur Rißbildung in der Natursteinplatte führen.Out EP 1 153 738 A1 A method for producing a large-format composite panel is known in which a stabilizing layer in the form of a mineral fiber mat embedded in a resin is applied to both sides of a natural stone panel and a rear panel in the form of a mineral fiber mat embedded in a resin is arranged at a predetermined distance from the natural stone panel. after which the two intermediate spaces thus formed are filled with a granulate and then foamed. Finally, the natural stone slab is cut up along its central plane. In the case of the resulting composite panels, the layer structure on the natural stone panel has an excessively high elasticity, so that when the force is applied, the natural stone panel first deflects before a force transmission takes place. This can lead to cracking in the natural stone slab.

Aufgabe der Erfindung ist es, ein Verfahren zum Herstellen einer Verbundplatte nach dem Oberbegriff des Anspruchs 1 zu schaffen, bei der die Elastizität des Schichtaufbaus auf der Natursteinplatte verringert ist.The object of the invention is a Process for producing a composite panel according to the preamble of claim 1 to create, in which the elasticity of the layer structure is reduced on the natural stone slab.

Diese Aufgabe wird entsprechend dem kennzeichnenden Teil des Anspruchs 1 gelöst.This task is done according to the characteristic Part of claim 1 solved.

Dadurch, daß mit einem Polyurethankleber gearbeitet wird, der naß aufgebracht wird und in den die Fasern etwa als Fasermatten eingebettet werden, wobei eine Trägerschicht als vorgefertigte Platte verwendet und der gesamte Schichtaufbau in einer Presse unter Druck ausgehärtet wird, ergibt sich eine Verbundplatte mit einem auf der Natursteinplatte befindlichen Schichtaufbau, der hart, aber nicht spröde ist, so daß bei Krafteinwirkung die Kräfte sofort übertragen werden, ohne daß hierzu eine Durchbiegung nötig ist.By working with a polyurethane glue is applied wet is and in which the fibers are embedded approximately as fiber mats, wherein a backing layer used as a prefabricated plate and the entire layer structure is cured under pressure in a press, a composite panel results with a layered structure on the natural stone slab that hard but not brittle so that at Force the forces broadcast immediately be without this a deflection is necessary is.

Dadurch, daß das Aushärten unter Druck stattfindet, ergibt sich eine im wesentlichen vollflächige Kontaktierung der zu verklebenden Schichten und Durchdringung der Fasern der Stabilisierungsschichten, wodurch die Verbundplatte entsprechend hart wird.Because the curing takes place under pressure, there is an essentially full-surface contacting of the adhesive layers and penetration of the fibers of the stabilizing layers, whereby the composite panel becomes correspondingly hard.

Der Polyurethankleber, insbesondere ein lösungsmittelfreier Zweikomponentenkleber, vorzugsweise Diphenylmethan-4,4-diisocyanat mit einem Härter, läßt sich Naß-in-Naß verarbeiten, ohne übermäßig zu schrumpfen. Außerdem entstehen beim Härten keine giftigen Dämpfe.The polyurethane glue, in particular a solvent free Two-component adhesive, preferably diphenylmethane-4,4-diisocyanate with a hardener, let yourself Process wet-on-wet without shrinking excessively. Moreover arise during hardening no toxic fumes.

Außerdem erhält man bei einer Stärke der Natursteinplatte von 3 bis 10 mm, insbesondere etwa 4 bis 6 mm, die notwendige Festigkeit und ein entsprechend geringes Gewicht, wodurch eine Verwendung als Küchenarbeitsplatte (die beispielsweise Abmessungen von etwa 250 bis 300 cm × 65 cm aufweist) erleichtert und aufgrund des relativ geringen Natursteineinsatzes verbilligt bzw. eine Verlegung als großformatige Wand- oder Bodenplatte erleichtert und ebenso verbilligt wird, wobei sich zudem hohe Trittschall- und Wärmedämmwerte ergeben. Die Gefahr einer "Aufschüsselung", wie sie bei der Verlegung von massiven Natursteinplatten besteht, ist hier nicht gegeben. Trotzdem läßt sich die Natursteinoberfläche auch noch nach dem Verlegen selbst bei großen Formaten bearbeiten.You also get a thickness of natural stone slab from 3 to 10 mm, in particular about 4 to 6 mm, the necessary strength and a correspondingly low weight, which makes use as Kitchen countertop (The dimensions, for example, from about 250 to 300 cm × 65 cm has) relieved and due to the relatively low use of natural stones cheaper or a laying as a large-format wall or floor slab is made easier and less expensive, with high impact sound and thermal insulation values result. The danger of a "breakdown", as with the Laying massive natural stone slabs is not here given. Still can the natural stone surface edit even after laying even with large formats.

Zweckmäßigerweise wird eine Vielzahl von beispielsweise zehn Schichtstrukturen als Stapel übereinander angeordnet in einer Presse unter Druck ausgehärtet. Damit die einzelnen Schichtstrukturen nicht miteinander verkleben, ist für eine Trennschicht zu sorgen. Hierzu eignet sich beispielsweise PVC-Folie, da PVC nicht mit dem Polyurethankleber verklebt.A large number is expedient of, for example, ten layer structures as a stack on top of one another arranged in a press cured under pressure. So that the individual layer structures are not stick together is for to provide a separation layer. PVC film is suitable for this, because PVC does not stick to the polyurethane glue.

Insbesondere wird eine Schichtstruktur gebildet, die auf jeder Seite der Natursteinplatte eine Stabilisierungsschicht, eine Trägerschicht und eine weitere Stabilisierungsschicht aufweist, wobei die Natursteinplatte nach dem Aushärten des Polyurethanklebers längs ihrer Mittelebene zerteilt wird, wodurch sich entsprechend dünne Natursteinschichten von ca. 3 bis 5 mm erzeugen lassen.In particular, a layer structure formed a stabilizing layer on each side of the natural stone slab, a backing layer and has a further stabilizing layer, the natural stone slab after curing of the polyurethane adhesive lengthways its central plane is divided, which results in correspondingly thin layers of natural stone allow approx. 3 to 5 mm to be produced.

Die Fasern werden zweckmäßigerweise als Fasermatten eingebettet, wobei es sich um Mineral- oder Glasfasermatten handeln kann. Ferner können in besonders beanspruchten Bereichen der Verbundplatte, bei Küchenarbeitsplatten etwa dort, wo Ausschnitte etwa für Becken- oder Kochplatteneinsätze angebracht werden müssen, zusätzlich Kohlefaserbänder in wenigstens eine der Stabilisierungsschichten eingebettet werden.The fibers are useful embedded as fiber mats, which are mineral or glass fiber mats can act. Furthermore, in particularly stressed areas of the composite panel, for kitchen worktops about where cutouts for Basin or hotplate inserts attached Need to become, additionally Carbon fiber tapes be embedded in at least one of the stabilization layers.

Weitere Ausgestaltungen der Erfindung sind der nachfolgenden Beschreibung und den Unteransprüchen zu entnehmen.Further refinements of the invention are to the following description and the dependent claims remove.

Die Erfindung wird nachstehend anhand von in den beigefügten Abbildungen dargestellten Ausführungsbeispielen näher erläutert.The invention is illustrated below from in the attached Illustrations shown embodiments explained in more detail.

1 und 2 zeigen jeweils ausschnittweise eine Ausführungsform eines Schichtbaufbaus zur Herstellung einer Verbundplatte. 1 and 2 each show a section of an embodiment of a layer structure for producing a composite panel.

Gemäß 1 wird eine relativ dünne Natursteinplatte auf einer Unterlage (nicht dargestellt) plaziert, auf die Oberseite der Natursteinplatte 1 ein zweikomponentiger Polyurethankleber aufgebracht und in diesen eine Glas- oder Mineralfasermatte zur Bildung einer Stabilisierungsschicht 2 aufgebracht. Je nach Dicke der Fasermatte wird nochmals Polyurethankleber aufgebracht. Darauf wird eine Schaumstoffplatte 3 aus Polyurethan-Hartschaum einer gewünschten Dicke und Härte in Kontakt mit Polyurethankleber aufgelegt, wonach wiederum Polyurethankleber aufgebracht und in diesem eine Glas- oder Mineralfasermatte zur Bildung einer weiteren Stabilisierungsschicht 4 eingebettet wird. Letztere wird mit einer PVC-Folie 5 abgedeckt. Dieser Schichtaufbau wird mehrfach wiederholt, so daß sich ein entsprechender Stapel ergibt. Dieser Stapel wird in einer Presse unter Druck – und gegebenenfalls unter erhöhter Temperatur – ausgehärtet. Hierdurch ergibt sich eine entsprechende Anzahl an Verbundplatten, die durch die PVC-Folien 5 getrennt sind.According to 1 a relatively thin natural stone slab is placed on a base (not shown), on top of the natural stone slab 1 a two-component polyurethane adhesive is applied and in this a glass or mineral fiber mat to form a stabilizing layer 2 applied. Depending on the thickness of the fiber mat, polyurethane glue is applied again. On top of it is a foam sheet 3 Made of rigid polyurethane foam of a desired thickness and hardness in contact with polyure Thankleber applied, after which polyurethane glue is applied and in this a glass or mineral fiber mat to form a further stabilization layer 4 is embedded. The latter comes with a PVC film 5 covered. This layer structure is repeated several times, so that a corresponding stack results. This stack is cured in a press under pressure - and possibly under elevated temperature. This results in a corresponding number of composite panels through the PVC films 5 are separated.

Gemäß 2 wird der entsprechend 1 gebildete Schichtaufbau zunächst umgedreht, um auf der noch freien Oberfläche der Natursteinplatte 1 denselben Schichtaufbau zu wiederholen. Auch hier wird dann wiederum ein Stapel gebildet, der in einer Presse unter Druck – und gegebenenfalls unter erhöhter Temperatur – ausgehärtet wird. Die Natursteinplatten 1 werden anschließend längs ihrer Mittelebene zerteilt, um so zwei Verbundplatten zu erhalten. Die Verbundplatten können beispielsweise eine Stärke von ca. 30 bis 50 mm besitzen.According to 2 the will 1 Layer structure formed first turned over to the still free surface of the natural stone slab 1 repeat the same layer structure. Here, too, a stack is again formed, which is cured in a press under pressure - and if necessary under elevated temperature. The natural stone slabs 1 are then cut along their median plane to obtain two composite panels. The composite panels can have a thickness of approximately 30 to 50 mm, for example.

Die Trägerschicht 3 kann aus industriell gefertigtem Hartschaum bestehen, es kann sich aber auch um eine Platte handeln, die mit Hilfe von Schaumglas- oder Schaumkeramikgranulat hergestellt ist, das in einen plattenförmigen Hohlraum, der anschließend ausgeschäumt wird, gefüllt wird, wodurch eine erhöhte Druckfestigkeit erreicht werden kann. Zwischen dem Granulat können Verstärkungsfasern eingelagert sein.The backing layer 3 can consist of industrially manufactured rigid foam, but it can also be a plate that is produced with the help of foam glass or foam ceramic granulate, which is filled into a plate-shaped cavity, which is then foamed, whereby an increased compressive strength can be achieved. Reinforcing fibers can be embedded between the granules.

Claims (10)

Verfahren zum Herstellen einer Verbundplatte, wobei eine Natursteinplatte mit einer Stabilisierungsschicht in Form von in einem Harz eingebetteten Fasern einer Trägerschicht aus Polyurethan und einer weiteren Stabilisierungsschicht in Form von in einem Harz eingebetteten Fasern versehen wird, dadurch gekennzeichnet, daß die Fasern der Stabilisierungsschichten in einem Polyurethankleber, der naß aufgetragen wird, eingebettet werden, die Trägerschicht als Polyurethan-Hartschaumplatte auf den nassen Polyurethankleber aufgebracht, auf die Trägerschicht der nasse Polyurethankleber und die Fasern der weiteren Stabilisierungsschicht aufgebracht und die so gebildete Schichtstruktur in einer Presse unter Druck ausgehärtet wird.Method for producing a composite panel, a natural stone panel being provided with a stabilizing layer in the form of fibers embedded in a resin, a carrier layer made of polyurethane and a further stabilizing layer in the form of fibers embedded in a resin, characterized in that the fibers of the stabilizing layers are coated in a polyurethane adhesive , which is applied wet, embedded, the carrier layer applied as a rigid polyurethane foam sheet to the wet polyurethane adhesive, applied to the carrier layer of the wet polyurethane adhesive and the fibers of the further stabilizing layer, and the layer structure thus formed is cured in a press under pressure. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß eine Vielzahl von Schichtstrukturen als Stapel übereinander angeordnet in der Presse unter Druck ausgehärtet wird.A method according to claim 1, characterized in that a Large number of layer structures arranged in a stack one above the other Press hardened under pressure becomes. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die einzelnen Schichtstrukturen jeweils durch eine Trennfolie, insbesondere eine PVC-Folie, voneinander getrennt werden.A method according to claim 1 or 2, characterized in that that the individual layer structures each by means of a separating film, in particular a PVC film, be separated from each other. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Fasern als Fasermatten eingebettet werden.Method according to one of claims 1 to 3, characterized in that that the Fibers are embedded as fiber mats. Verfahren nach Anspruch 4, dadurch gekennzeichnet, daß die Fasermatten Mineral- oder Glasfasermatten sind.A method according to claim 4, characterized in that the Fiber mats are mineral or glass fiber mats. Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß in besonders beanspruchten Bereichen der Verbundplatte zusätzlich Kohlefaserbänder in wenigstens eine der Stabilisierungsschichten eingebettet werden.Method according to one of claims 1 to 5, characterized in that that in Areas of the composite panel that are particularly stressed are additionally carbon fiber strips at least one of the stabilization layers are embedded. Verfahren nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß eine Schichtstruktur gebildet wird, die auf jeder Seite der Natursteinplatte eine Stabilisierungsschicht, eine Trägerschicht und eine weitere Stabilisierungsschicht aufweist, wobei die Natursteinplatte nach dem Aushärten des Polyurethanklebers längs ihrer Mittelebene zerteilt wird.Method according to one of claims 1 to 6, characterized in that that a Layer structure is formed, one on each side of the natural stone slab Stabilizing layer, a carrier layer and has a further stabilizing layer, the natural stone slab after curing of the polyurethane adhesive lengthways their middle level is divided. Verfahren nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß als Polyurethankleber ein lösungsmittelfreier Zweikomponentenkleber verwendet wird.Method according to one of claims 1 to 7, characterized in that that as Polyurethane adhesive is a solvent-free Two-component adhesive is used. Verfahren nach Anspruch 8, dadurch gekennzeichnet, daß als Polyurethankleber Diphenylmethan-4,4-diisocyanat mit einem Härter verwendet wird.A method according to claim 8, characterized in that as Polyurethane adhesive diphenylmethane-4,4-diisocyanate with a hardener is used. Großformatige Verbundplatte mit einer Natursteinplatte (1 ), die rückseitig eine Stabilisierungsschicht (2) aus in einem Harz eingebetteten Fasern, einer Trägerschicht (3) aus Polyurethanschaum und eine weitere Stabilisierungsschicht (4) aus in einem Harz eingebetteten Fasern trägt, hergestellt nach dem Verfahren nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß das Harz ein Polyurethankleber ist.Large format composite panel with a natural stone panel ( 1 ) with a stabilizing layer on the back ( 2 ) made of fibers embedded in a resin, a carrier layer ( 3 ) made of polyurethane foam and another stabilizing layer ( 4 ) from fibers embedded in a resin, produced by the method according to one of claims 1 to 9, characterized in that the resin is a polyurethane adhesive.
DE10300779A 2003-01-11 2003-01-11 Production of a laminated plate, useful as wall and floor tiles, comprising a natural stone plate having a stabilizing layer and a support layer comprises use of a polyurethane adhesive Withdrawn DE10300779A1 (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006097466A1 (en) * 2005-03-15 2006-09-21 Basf Aktiengesellschaft Tiles provided with adhesive polyurethane layer
WO2012000893A1 (en) * 2010-07-02 2012-01-05 Fabiano Fulvi Method for reinforcing stone slabs by means of a honeycomb panel including the simultaneous construction of said honeycomb panel
EP3159158A1 (en) * 2015-10-22 2017-04-26 Remuzzi Camillo E Figlio Dei F.Lli Remuzzi S.N.C. Composite material and method of manufacture
CN109401720A (en) * 2018-11-10 2019-03-01 湖南神力铃胶粘剂制造有限公司 A kind of stone material high permeability zone water cure waterproof back mesh glue and preparation method thereof
US11806982B1 (en) * 2015-08-06 2023-11-07 Frontwave—Engenharia E Consultadoria, S.A. Multilayer laminate panel

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006097466A1 (en) * 2005-03-15 2006-09-21 Basf Aktiengesellschaft Tiles provided with adhesive polyurethane layer
WO2012000893A1 (en) * 2010-07-02 2012-01-05 Fabiano Fulvi Method for reinforcing stone slabs by means of a honeycomb panel including the simultaneous construction of said honeycomb panel
US11806982B1 (en) * 2015-08-06 2023-11-07 Frontwave—Engenharia E Consultadoria, S.A. Multilayer laminate panel
EP3159158A1 (en) * 2015-10-22 2017-04-26 Remuzzi Camillo E Figlio Dei F.Lli Remuzzi S.N.C. Composite material and method of manufacture
CN109401720A (en) * 2018-11-10 2019-03-01 湖南神力铃胶粘剂制造有限公司 A kind of stone material high permeability zone water cure waterproof back mesh glue and preparation method thereof

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