Panel

Description

[0001] The invention relates to a panel provided with two cover plates and with layers of an insulating material and of a fire-retardant material located between said cover plates, whereby the layer of a fire-retardant material is provided between the two layers of a thermally insulating material abutting against said cover plates.

[0002] By a panel of this type, known from EP-B1-0.353.540 the layers of thermally insulating material consist of mineral wool. By this known panel all three layers, the two layers of thermally insulating material and the layer of fire-retardant material, contribute to a large extent to the fire-retardant aspects of the panel.

[0003] A disadvantage of the use of mineral wool as thermally insulating material is that machining of the layer of mineral wool, for example for the formation of grooves in the layer, is time consuming. Furthermore the moistureproofness and pressure resistance are relatively poor whilst the specific weight and the prize are relatively high.

[0004] It is an object of the invention to provide a panel whereby the disadvantages of the known panel have been overcome.

[0005] This object is achieved by a panel according to the invention in that said insulating material is an expanded polystyrene.

[0006] Although the layers of expanded polystyrene have nearly no fire-retardant effect it has surprisingly become apparent, that with such a construction of the panel it is still very well possible to meet the requirements with regard to the fire-retarding effect that are made of such panels, which are for example used for making walls in buildings. The provision of layers of expanded polystyrene on the outside of the core of the panel, which is to be clad with the cover plates, thereby offers great advantages with respect to the moisture proofness, pressure resistance, specific weight and price in comparison with a construction wherein the outsides of the panel to be clad with the cover plates are made up of layers of mineral wool.

[0007] In many cases the outer surfaces of the core of the panel made up of the layers of insulating material and fire-retardant material require machining, for example trimming or milling, so as to give the core its correct thickness and/or to form grooves which are to correspond with a profiled version of a cover plate.

[0008] The outer surfaces of a core can be worked much more easily when said outer surfaces are made up of an expanded polystyrene than when said outer surfaces are made up of mineral wool. Furthermore, when providing the cover plates on the core it will be readily possible to press any roughnesses still present in the insulating material or any impurities present on the insulating slightly into the layers of insulating material, so that an adequate smoothness and a taut outline of the cover plates can be ensured, while retaining conventional simple methods of providing the cover plates, which is of great importance in order to ensure an attractive appearance of the panels.

[0009] The invention will be explained in more detail hereafter with reference to the accompanying Figure, which is a diagrammatic perspective view of a part of a panel according to the invention.

[0010] The panel shown in Figure 1 comprises two cover plates 1 and 2 of a metal, for example steel, which make up the outside of the panel. As is shown in the Figure, the cover plates are profiled, in such a manner that for example parts 3 and 4 of cover plate 1 are staggered with respect to each other, in a direction perpendicularly to the longitudinal direction of the panel. In a similar manner the cover plate 2 comprises parts 5 and 6 which are staggered in a direction perpendicularly to the longitudinal direction of the panel.

[0011] The longitudinal edges of the cover plates 1 and 2 are flanged in the manner shown in the Figure, which is known per se, such that a longitudinal edge of corresponding panels fits between the flanged parts of the cover plates 1 and 2 of another longitudinal edge of a correspondingly shaped panel.

[0012] Two layers 7 and 8 of a thermally insulating material, generally expanded polystyrene, are provided between the cover plates 1 and 2, whilst a layer 9 of a special fire-retardant material is provided between said layers 7 and 8.

[0013] As already explained above, the outer layers of polystyrene can be readily machined, inter alia with a view to forming longitudinal grooves for receiving the deflected parts 4 and 5 of the cover plates 1 and 2. Partly because of the slightly resilient nature of the polystyrene said cover plates 1 and 2 can thereby be glued to the layers 7 and 8 of an insulating material in such manner as to closely abut against said layers.

[0014] It is preferred to form grooves 10 and 11 extending in the longitudinal direction of the profile in the longitudinal edges of the layer 9 of a fire-resistant material. When assembling a wall consisting of panels of this type tongues may be inserted in the grooves 10 and 11 of adjoining panels in order to prevent the occurrence of a leak near the layers of fire-retardant material.

[0015] Another possibility is to coat the sides of the layers 7 - 9 with a fire-resistant paint, which will foam at high temperatures, thus providing a seal between adjoining panels.

[0016] Furthermore a fire-retardant putty may be provided between adjoining panels when assembling a wall on the construction site.

Claims

1. A panel provided with two cover plates (1, 2) and with layers of an insulating material (7, 8) and of a fire-retardant material (9) located between said cover plates, whereby the layer of a fire-retardant material (9) is provided between the two layers of a thermally insulating material (7, 8) abutting against said cover plates, characterized in that said insulating material is expanded polystyrene.

2. A panel according to claim 1, characterized in that at least one of said cover plates is profiled, seen in its longitudinal direction, in such a manner that parts (3, 4) of said cover plate are staggered with respect to each other in a direction perpendicularly to the longitudinal direction of the panel, and that said layers of a thermally insulating material are provided with recesses for receiving parts of said cover plate.

3. A panel according to claim 1 or 2, characterized in that the longitudinal edges of said panels are profiled in such a manner that a longitudinal edge of corresponding panels can be inserted into ends of the cover plates of another panel projecting from said thermally insulating material of said other panel.

4. A panel according to any one of the preceding claims, characterized in that grooves (10) are formed in the longitudinal edges of said layer of a fire-resistant material.

5. A panel according to any one of the preceding claims, characterized in that said cover plates are made of a metal.

6. A panel according to any one of the preceding claims, characterized in that edges of said layers of material are coated with a fire-resistant paint.

7. An assembly comprising panels according to any one of the preceding claims, characterized in that a fire-resistant putty is provided between adjoining panels.

Ansprüche

1. Paneel, versehen mit zwei Deckplatten (1, 2) und mit zwischen den Deckplatten angeordneten Schichten aus einem Isoliermaterial (7, 8) und aus einem feuerhemmenden Material (9), wobei die Schicht aus einem feuerhemmenden Material (9) zwischen den beiden Schichten aus einem Wärmeisoliermaterial (7, 8), welche an den Deckplatten anliegen, vorgesehen ist, dadurch gekennzeichnet, daß es sich bei dem Isoliermaterial um expandiertes Polystyrol handelt.

2. Paneel nach Anspruch 1, dadurch gekennzeichnet, daß zumindest eine der Deckplatten, in ihrer Längsrichtung gesehen, derart profiliert ist, daß Teile (3, 4) der Deckplatte in bezug aufeinander in eine Richtung versetzt sind, welche senkrecht zur Längsrichtung des Paneels verläuft, und daß die Schichten aus einem Wärmeisoliermaterial mit Ausnehmungen zum Aufnehmen von Teilen der Deckplatte versehen sind.

3. Paneel nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Längskanten der Paneele derart profiliert sind, daß eine Längskante von entsprechenden Paneelen in Enden der Deckplatten eines anderen Paneels eingefügt werden kann, welche aus dem Wärmeisoliermaterial des anderen Paneels hervorragen.

4. Paneel nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß in den Längskanten der Schicht aus einem feuerbeständigem Material Nuten (10) ausgebildet sind.

5. Paneel nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die Deckplatten aus einem Metall bestehen.

6. Paneel nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die Kanten der Materialschichten mit einem feuerbeständigen Anstrich beschichtet sind.

7. Zusammenbau, umfassend Paneele nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß zwischen angrenzenden Paneelen eine feuerbeständige Dichtungsmasse vorgesehen ist.

Revendications

1. Panneau comprenant deux plaques de revêtement (1, 2), ainsi que des couches d'une matière isolante (7, 8) et d'une matière retardant le feu (9) placées entre les plaques de revêtement, dans lequel la couche de matière retardant le feu (9) est prévue entre les deux couches d'une matière isolante thermique (7, 8) qui sont en appui contre lesdites plaques de revêtement, caractérisé en ce que la matière isolante est du polystyrène expansé.

2. Panneau selon la revendication 1, caractérisé en ce qu'au moins une desdites plaques de revêtement est profilée, vue dans sa direction longitudinale, de manière que des parties (3, 4) de ladite plaque de revêtement soient décalées l'une par rapport à l'autre dans une direction perpendiculaire à la direction longitudinale du panneau, et en ce que lesdites couches de matière isolante thermique sont munies d'évidements destinés à recevoir des parties de ladite plaque de revêtement.

3. Panneau selon la revendication 1 ou 2, caractérisé en ce que les bords longitudinaux desdits panneaux sont profilés de manière qu'un bord longitudinal des panneaux correspondants puisse être inséré dans les extrémités des plaques de revêtement d'un autre panneau qui font saillie au-delà de ladite matière isolante thermique dudit autre panneau.

4. Panneau selon une quelconque des revendications précédentes, caractérisé en ce que des rainures (10) sont formées dans les bords longitudinaux de ladite couche de matière résistante au feu.

5. Panneau selon une quelconque des revendications précédentes, caractérisé en ce que lesdites plaques de revêtement sont faites d'un métal.

6. Panneau selon une quelconque des revendications, précédentes, caractérisé en ce que des bords desdites couches de matière sont revêtus d'une peinture résistante au feu.

7. Ensemble comprenant des panneaux selon une quelconque des revendications précédentes, caractérisé en ce qu'un mastic résistant au feu est disposé entre les panneaux adjacents.

Drawing