CH693947A5 - Feuerhemm end sandwich panel. - Google Patents

Feuerhemm end sandwich panel. Download PDF

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Publication number
CH693947A5
CH693947A5 CH02214/99A CH221499A CH693947A5 CH 693947 A5 CH693947 A5 CH 693947A5 CH 02214/99 A CH02214/99 A CH 02214/99A CH 221499 A CH221499 A CH 221499A CH 693947 A5 CH693947 A5 CH 693947A5
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CH
Switzerland
Prior art keywords
fire
core
retardant
sandwich
sandwich panel
Prior art date
Application number
CH02214/99A
Other languages
German (de)
Inventor
Andreas Schneider
Original Assignee
Schreinerei Schneider Ag
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Publication date
Application filed by Schreinerei Schneider Ag filed Critical Schreinerei Schneider Ag
Publication of CH693947A5 publication Critical patent/CH693947A5/en

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Classifications

    • 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
    • B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
    • B32B21/04—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood 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
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/10—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of wood
    • 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
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
    • 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
    • B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
    • B32B21/04—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B21/047—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood as the main or only constituent of a layer, which is next to another layer of the same or of a different material of 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/28—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42
    • B32B27/281—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42 comprising polyimides
    • 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
    • B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
    • 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
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/10—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
    • B32B3/12—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by a layer of regularly- arranged cells, e.g. a honeycomb structure
    • 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
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/10—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products
    • E04C2/24—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products laminated and composed of materials covered by two or more of groups E04C2/12, E04C2/16, E04C2/20
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
    • E04C2/34—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts
    • E04C2/36—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts spaced apart by transversely-placed strip material, e.g. honeycomb panels
    • E04C2/365—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts spaced apart by transversely-placed strip material, e.g. honeycomb panels by honeycomb structures
    • 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
    • B32B2266/0221—Vinyl resin
    • B32B2266/0235—Vinyl halide, 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
    • 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
    • B32B2305/00—Condition, form or state of the layers or laminate
    • B32B2305/02—Cellular or porous
    • B32B2305/024—Honeycomb
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/306—Resistant to heat
    • B32B2307/3065—Flame resistant or retardant, fire resistant or retardant
    • 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
    • B32B2311/00—Metals, their alloys or their compounds
    • B32B2311/24—Aluminium
    • 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
    • B32B2317/00—Animal or vegetable based
    • B32B2317/16—Wood, e.g. woodboard, fibreboard, woodchips
    • 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
    • B32B2375/00—Polyureas; 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
    • B32B2377/00—Polyamides
    • 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
    • B32B2379/00—Other polymers having nitrogen, with or without oxygen or carbon only, in the main chain
    • B32B2379/08—Polyimides

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Laminated Bodies (AREA)

Description

Die vorliegende Erfindung bezieht sich auf eine feuerhemmende Sandwichplatte, wie sie im Oberbegriff des unabhängigen Patentanspruchs 1 definiert ist. The present invention relates to a fire-retardant sandwich panel as defined in the preamble of independent claim 1.

Feuerhemmende Platten werden beispielsweise als Boden- oder Wandplatten in Zug- oder Tramwagons eingesetzt, wobei unterschiedliche Plattenkonstruktionen bekannt sind. Insbesondere an Bodenplatten werden verschiedene Anforderungen wie gute Feuerhemmung, hohe Druckfestigkeit und Stabilität, niedriges Gewicht und Kostengünstigkeit gestellt, welche von herkömmlichen Platten in ihrer Kombination nur unzureichend erfüllt werden. Fire-retardant panels are used, for example, as floor or wall panels in train or tram wagons, different panel designs being known. Various requirements are placed on floor slabs, in particular, such as good fire resistance, high pressure resistance and stability, low weight and low cost, which are not adequately met by conventional slabs in their combination.

Feuerhemmende, mehrlagige, abgesperrte, d.h. in der Faserrichtung sich kreuzende Holzplatten beispielsweise sind im Normalfall ausreichend druckfest, aber auch relativ schwer. Fire retardant, multi-layer, cordoned off, i.e. Wood panels that cross in the direction of the fiber, for example, are normally sufficiently pressure-resistant but also relatively heavy.

Anderseits existieren auch so genannte Sandwichplatten, die sich aus Lagen verschiedener Materialien zusammensetzen. Zwischen zwei Deckplatten ist zur Gewichtseinsparung ein wesentlich leichterer Kern angeordnet. Die bekannten Sandwichplatten sind entweder nicht ausreichend druckfest und/oder nicht rundherum feuerhemmend oder weisen einen feuerhemmenden, druckfesten Kern auf, der relativ teuer ist. On the other hand, there are also so-called sandwich panels, which are composed of layers of different materials. To save weight, a much lighter core is arranged between two cover plates. The known sandwich panels are either not sufficiently pressure-resistant and / or not fire-retardant all around or have a fire-retardant, pressure-resistant core which is relatively expensive.

Angesichts der Nachteile der bisher bekannten, oben beschriebenen feuerhemmenden Platten liegt der Erfindung die folgende Aufgabe zu Grunde. Zu schaffen ist eine feuerhemmende Platte der eingangs erwähnten Art, die gleichzeitig eine gute Feuerhemmung, eine hohe Druckfestigkeit und Stabilität und ein niedriges Gewicht aufweist und zudem kostengünstig ist. In view of the disadvantages of the previously known fire-retardant plates described above, the invention is based on the following object. A fire-retardant plate of the type mentioned at the outset is to be created which at the same time has good fire resistance, high pressure resistance and stability and a low weight and is also inexpensive.

Diese Aufgabe wird durch die erfindungsgemässe feuerhemmende Sandwichplatte gelöst, wie sie im unabhängigen Patentanspruch 1 definiert ist. Bevorzugte Ausführungsvarianten ergeben sich aus den abhängigen Patentansprüchen. This object is achieved by the fire-retardant sandwich panel according to the invention, as defined in independent claim 1. Preferred design variants result from the dependent patent claims.

Das Wesen der Erfindung besteht darin, dass bei einer feuerhemmenden Sandwichplatte mit einer ersten und einer zweiten Deckplatte, zwischen denen ein im Vergleich zu den Deckplatten leichterer Kern angeordnet ist, die Deckplatten jeweils mindestens drei miteinander verleimte, abgesperrte Holzlagen aufweisen und feuerhemmend ausgebildet sind und der Kern von feuerhemmendem Material umschlossen ist. The essence of the invention is that in a fire-retardant sandwich panel with a first and a second cover plate, between which a lighter core compared to the cover plates is arranged, the cover plates each have at least three glued, blocked wooden layers and are fire-retardant and the Core is surrounded by fire retardant material.

Dadurch, dass der Kern von feuerhemmendem Material umschlossen ist, kann darauf verzichtet werden, ihn feuerfest auszubilden. Er kann so je nach gewählter Variante kostengünstiger und/oder mit geringerem Gewicht hergestellt werden. Dass die Deckplatten mindestens drei verleimte, abgesperrte Holzlagen umfassen, stabilisiert die Sandwichplatte und macht sie im Vergleich zu Metallplatten geräuschdämmend. Because the core is surrounded by fire-retardant material, it can be dispensed with to make it fire-resistant. Depending on the selected variant, it can be manufactured more cheaply and / or with less weight. The fact that the cover plates comprise at least three glued, blocked-off wooden layers stabilizes the sandwich plate and makes it noise-insulating in comparison to metal plates.

Mit Vorteil weist der Kern eine Dichte von maximal 300 kg/m<3>, vorzugsweise maximal 160 kg/m<3> und in senkrechter Richtung zu den Deckplatten einen E-Modul von mindestens 1000 N/mm<2>, vorzugsweise mindestens 4000 N/mm<2> auf. Er besteht zu diesem Zweck beispielsweise aus Balsaholz, aus einem Schaum, der z.B. Polyetherimid, Polyurethan oder PVC beinhaltet, oder aus einer Wabenplatte, z.B. aus Aluminium oder Aramid. Auf diese Weise kann eine hohe Druckfestigkeit bei geringem Gewicht erreicht werden. The core advantageously has a density of a maximum of 300 kg / m 3, preferably a maximum of 160 kg / m 3, and an elastic modulus of at least 1000 N / mm 2, preferably at least 4000, in the direction perpendicular to the cover plates N / mm <2>. For this purpose it consists, for example, of balsa wood, of a foam which e.g. Polyetherimide, polyurethane or PVC, or from a honeycomb panel, e.g. made of aluminum or aramid. In this way, a high compressive strength with low weight can be achieved.

Bei einem bevorzugten Ausführungsbeispiel ist zwischen der ersten und der zweiten Deckplatte um den Kern herum eine Randleiste angeordnet, die mindestens drei miteinander verleimte Holzlagen aufweist und feuerhemmend ausgebildet ist, wobei die Randleiste vorzugsweise mit den beiden Deckplatten verleimt ist. Die ganze Sandwichplatte setzt sich so im Wesentlichen nur aus verleimten Holzlagen und dem Kern zusammen. In a preferred embodiment, an edge strip is arranged between the first and the second cover plate around the core, which has at least three wood layers glued together and is fire-retardant, the edge strip preferably being glued to the two cover plates. The entire sandwich panel is essentially composed of glued wood layers and the core.

Die feuerhemmende Wirkung der Deckplatten und der Randleiste wird vorzugsweise durch Verwendung eines feuerhemmenden Leims, insbesondere Phenolharzleims, erzeugt, wobei hierzu beispielsweise der Leimflotte anorganische, nichtkorrosive Salze zugegeben werden. Alternativ könnten auch die Holzlagen geeignet behandelt werden. The fire-retardant effect of the cover plates and the edge strip is preferably produced by using a fire-retardant glue, in particular phenolic resin glue, with inorganic, non-corrosive salts being added to the glue liquor, for example. Alternatively, the wooden layers could be treated appropriately.

Im Folgenden wird die erfindungsgemässe feuerhemmende Sandwichplatte unter Bezugnahme auf die beigefügten Zeichnungen anhand eines Ausführungsbeispiels detaillierter beschrieben. Es zeigen: Fig. 1 ein Ausführungsbeispiel der erfindungsgemässen feuerhemmenden Sandwichplatte in einer Draufsicht und Fig. 2 eine Schnittansicht der feuerhemmenden Sandwichplatte gemäss der Linie A-A in Fig. 1, wobei in der Mitte ein Teil der Sandwichplatte weggeschnitten ist. The fire-retardant sandwich panel according to the invention is described in more detail below with reference to the accompanying drawings using an exemplary embodiment. 1 shows an embodiment of the fire-retardant sandwich panel according to the invention in a plan view, and FIG. 2 shows a sectional view of the fire-retardant sandwich panel according to line A-A in FIG. 1, with part of the sandwich panel being cut away in the middle.

Die dargestellte feuerhemmende Sandwichplatte umfasst eine erste Deckplatte 2, eine zweite Deckplatte 3, einen dazwischen angeordneten Kern 1 sowie eine um den Kern 1 herum zwischen der ersten Deckplatte 2 und der zweiten Deckplatte 3 angeordnete Randleiste 4. Die erste Deckplatte 2 besteht aus fünf miteinander verleimten Holzlagen 21-25, während die zweite Deckplatte 3 fünf miteinander verleimte Holzlagen 31-35 umfasst. An die sechs miteinander verleimte Holzlagen 41-46 aufweisende Randleiste 4 ist von oben die Deckplatte 2 und von unten die Deckplatte 3 geleimt. Zwei benachbarte Holzlagen 21-25, 31-35, 41-46 der Deckplatte 2, der Deckplatte 3 und der Randleiste 4 kreuzen sich jeweils in der Faserrichtung des Holzes. The fire-retardant sandwich plate shown comprises a first cover plate 2, a second cover plate 3, a core 1 arranged between them and an edge strip 4 arranged around the core 1 between the first cover plate 2 and the second cover plate 3. The first cover plate 2 consists of five glued together Wood layers 21-25, while the second cover plate 3 comprises five wood layers 31-35 glued together. The cover plate 2 is glued to the six edge strips 4 having wood layers 41-46 glued to one another and the cover plate 3 glued from below. Two adjacent layers of wood 21-25, 31-35, 41-46 of the cover plate 2, the cover plate 3 and the edge strip 4 each intersect in the grain of the wood.

Als Leim wird ein Phenolharzleim verwendet, der feuerhemmend wirkt. Die Feuerhemmwirkung wird durch der Leimflotte zugegebene anorganische, nichtkorrosive Salze erzeugt. A phenolic resin glue is used as glue, which has a fire-retardant effect. The fire-retardant effect is generated by inorganic, non-corrosive salts added to the glue liquor.

Je nach verwendetem Material kann für die ganze Sandwichplatte die Brandklasse S3 oder sogar die Brandklasse S4 nach DIN 5510, 2. Teil, erreicht werden. Depending on the material used, fire class S3 or even fire class S4 according to DIN 5510, part 2, can be achieved for the entire sandwich panel.

Der Kern 1 ist von der Deckplatte 2, der Deckplatte 3 und der Randleiste 4 vollständig umschlossen und muss deshalb nicht feuerhemmend ausgestaltet werden. Er besteht im vor liegenden Fall aus Poly-etherimid-Schaum, kann aber beispielsweise auch aus Polyurethan-Schaum oder PVC-Schaum, aus Balsaholz oder aus einer Wabenplatte sein, die z.B. aus Aluminium oder Aramid besteht. Sein Zweck ist die Gewährleistung einer hohen Druckfestigkeit bei geringem Gewicht. The core 1 is completely enclosed by the cover plate 2, the cover plate 3 and the edge strip 4 and therefore does not have to be fire-retardant. In the present case it consists of polyetherimide foam, but can also be made of polyurethane foam or PVC foam, balsa wood or a honeycomb panel, e.g. made of aluminum or aramid. Its purpose is to ensure high compressive strength with low weight.

Im vorliegenden Ausführungsbeispiel ist der Kern 1 zwischen den Deckplatten 2, 3 von der Randleiste 4 aus mehreren Holzlagen 41-46 umschlossen. Denkbar ist selbstverständlich aber auch eine Umschliessung durch ein anderes feuerhemmendes Material, wie z.B. ein Schaum oder ein dünner Abdeckstreifen. In the present exemplary embodiment, the core 1 is enclosed between the cover plates 2, 3 by the edge strip 4 from a plurality of wooden layers 41-46. Of course, it is also conceivable to enclose it with another fire-retardant material, e.g. a foam or a thin cover strip.

Claims (9)

1. Feuerhemmende Sandwichplatte mit einer ersten und einer zweiten Deckplatte (2, 3), zwischen denen ein im Vergleich zu den Deckplatten (2, 3) leichterer Kern (1) angeordnet ist, dadurch gekennzeichnet, dass die Deckplatten (2, 3) jeweils mindestens drei miteinander verleimte, abgesperrte Holzlagen (21-25, 31-35) aufweisen und feuerhemmend ausgebildet sind und der Kern (1) von feuerhemmendem Material umschlossen ist. 1. Fire-retardant sandwich panel with a first and a second cover plate (2, 3), between which a lighter core (1) is arranged in comparison to the cover plates (2, 3), characterized in that the cover plates (2, 3) each Have at least three wooden layers (21-25, 31-35) which are glued together and sealed off and are fire-retardant and the core (1) is surrounded by fire-retardant material. 2. Sandwichplatte nach Anspruch 1, dadurch gekennzeichnet, dass der Kern (1) eine Dichte von maximal 300 kg/m<3>, vorzugsweise maximal 160 kg/m<3> aufweist. 2. Sandwich plate according to claim 1, characterized in that the core (1) has a density of at most 300 kg / m 3, preferably at most 160 kg / m 3. 3. Sandwichplatte nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Kern (1) in senkrechter Richtung zu den Deckplatten (2, 3) einen E-Modul von mindestens 1000 N/mm<2>, vorzugsweise mindestens 4000 N/mm<2> aufweist. 3. Sandwich plate according to claim 1 or 2, characterized in that the core (1) in the vertical direction to the cover plates (2, 3) has an elastic modulus of at least 1000 N / mm <2>, preferably at least 4000 N / mm < 2> has. 4. Sandwichplatte nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der Kern (1) aus Balsaholz besteht. 4. Sandwich plate according to one of claims 1 to 3, characterized in that the core (1) consists of balsa wood. 5. Sandwichplatte nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der Kern (1) aus einem Schaum besteht, der z.B. Polyetherimid, Polyurethan oder PVC beinhaltet. 5. Sandwich plate according to one of claims 1 to 3, characterized in that the core (1) consists of a foam which e.g. Includes polyetherimide, polyurethane or PVC. 6. Sandwichplatte nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der Kern (1) aus einer Wabenplatte, z.B. aus Aluminium oder Aramid, besteht. 6. Sandwich plate according to one of claims 1 to 3, characterized in that the core (1) from a honeycomb plate, e.g. made of aluminum or aramid. 7. Sandwichplatte nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass zwischen der ersten und der zweiten Deckplatte (2, 3) um den Kern (1) herum eine Randleiste (4) angeordnet ist, die mindestens drei miteinander verleimte Holzlagen (41-46) aufweist und feuerhemmend ausgebildet ist. 7. Sandwich panel according to one of claims 1 to 6, characterized in that between the first and the second cover plate (2, 3) around the core (1) around an edge strip (4) is arranged, the at least three glued together wooden layers (41 -46) and is fire-retardant. 8. Sandwichplatte nach Anspruch 7, dadurch gekennzeichnet, dass die Randleiste (4) mit den beiden Deckplatten (2, 3) verleimt ist. 8. Sandwich panel according to claim 7, characterized in that the edge strip (4) with the two cover plates (2, 3) is glued. 9. Sandwichplatte nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass die einzelnen Holzlagen (21-25, 31-35, 41-46) der Deckplatten (2, 3) und gegebenenfalls der Randleiste (4) mit einem feuerhemmenden Leim, insbesondere Phenolharzleim, verleimt sind.9. sandwich panel according to one of claims 1 to 8, characterized in that the individual wooden layers (21-25, 31-35, 41-46) of the cover plates (2, 3) and optionally the edge strip (4) with a fire-retardant glue, especially phenolic resin glue, are glued.
CH02214/99A 1999-11-12 1999-12-02 Feuerhemm end sandwich panel. CH693947A5 (en)

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DE29919919U DE29919919U1 (en) 1999-11-12 1999-11-12 Fire retardant sandwich panel

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DE102004038024A1 (en) * 2004-08-04 2006-03-16 Complexx Gesellschaft für Messe- und Ausstattungsbau mbH Base plate for manufacturing repeatedly useable floor, has core bounded by a circular edge made of reinforcing material, cover units laminarily fixed at core, and coating layer applied on one cover unit`s upper side
DE202006020347U1 (en) 2006-12-10 2008-05-21 Moralt Tischlerplatten Gmbh & Co.Kg lightweight panel
DE202012105040U1 (en) 2012-12-21 2013-01-29 Swl-Tischlerplatten Betriebs-Gmbh plywood

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FR2801066B1 (en) 2002-06-21
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GB2356649A (en) 2001-05-30
GB0027419D0 (en) 2000-12-27
DE29919919U1 (en) 2000-02-17

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