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(11) | EP 3 088 628 A1 |
| (12) | EUROPEAN PATENT APPLICATION |
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| (54) | MULTILAYER INSULATED PANEL FOR FLAT AND CURVED ROOFS CONSTRUCTION |
| (57) Insulated multilayer panel for realizing covers comprising a first and a second fretted
sheet, a layer in insulating material interposed between said first and second sheet
characterized in that said first fretted sheet projects with respect to the layer
in insulating material in the direction orthogonal to the fret one for a width equal
to the end rib, and said second fretted sheet projects with respect to the layer in
insulating material in the same direction and opposite with respect to the projection
of said first fretted sheet for a width equal to the end rib.
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Technical field
[0001] At the state of the art there are known various embodiments of insulating multilayer panels comprising at least a fretted sheet and an insulating layer.
[0002] In figures 9 and 10 there are shown two views of an embodiment, yet known at the state of the art. In figure 10 it is shown a section view of a straight panel which comprises two fretted sheets (1, 2) between which a layer in insulating material (3) is interposed. The upper sheet (1) is provided with a series of frets (11) at which there are positioned the frets of the lower sheet (2) as well.
[0003] In order to carry out the connection between the two panels, the left end fret (12) of the upper sheet (1) projects with respect to the insulating layer (3), at the end of which it is arranged a gasket (4). The section view of two panels side by side is shown in figure 9.
[0004] This kind of connection has a drawback linked to the fact that due to bad installation or to wear (the cover panels are clearly exposed to very variable climate conditions) there can be connection points in which the gasket (4) does not seal, and when infiltrations or accumulation of condensate occur between the two panels positioned side by side, the condensate drops from the connection between the two panels with clear aesthetic and, above all, functional problems.
[0005] This kind of drawbacks, according to what is known from the state of the art is ignored or solved in little efficient way by sealing the connections between the panels with silicone or other products. This implies clearly longer times and higher realization costs.
[0006] Another drawback linked to the known panels, as for example those shown in figures 9, 10 and 11, is that the two upper and lower fretted sheets are geometrically different and, therefore, the panel can be installed only in a position. This usually implies the need to turn over the panels in the building site to allow their correct positioning. It is clear that this is a very hazardous operation if carried out at altitude.
[0007] It is to be considered also that the right end part of the lower sheet (2) can be deformed during transportation and laying, and since the cover is observed from the bottom, these deformations are absolutely anti-aesthetic. Another embodiment known at the state of the art is shown in fig. 11A, where it is shown a cover realized with a fretted sheet and a flat one, between which it is interposed a layer in insulating material.
Technical problem
[0008] Therefore, aim of the present invention is to provide a multilayer panel for realizing flat, bent covers and side stoppers which overcomes the drawbacks linked to the embodiments known at the state of the art.
[0009] Hence, the present invention provides a multilayer panel for realizing covers configured so that it allows a rapid and efficient connection (both side, thanks to the drip, see figs. 2-a and 2b, and front connection, thanks to the projections of the lower sheet, see fig. 5) of two panels positioned side by side, which allows to recover possible infiltrations or the building of condensate and to convey it towards the gutter.
[0010] Another aim is to provide a panel in which an accidental deformation of the end part of the lower end fret does not imply problems either from the functional or the aesthetic point of view. According to another aim the panel in the straight variant of the present invention is configured so that it can be installed indifferently with each one of the two surfaces facing outwards, so that it is avoided the need to turn over the panel when laying the same.
[0011] Yet, the present invention provides a panel for realizing covers which optimizes the volumes occupied in transportation and storage steps.
Brief description of the invention
[0012] The present invention reaches the prefixed aims since it is an insulated multilayer panel for realizing covers comprising a first and a second fretted sheet, a layer in insulating material interposed between said first and second sheet characterized in that said first fretted sheet projects with respect to the layer in insulating material in the direction orthogonal to the fret one for a width equal to the end rib, and said second fretted sheet projects with respect to the layer in insulating material in the same direction and opposite with respect to the projection of said first fretted sheet for a width equal to the end rib. This width is commonly referred to with the term "pitch of a fret".
Description of figures
[0013]
In figures 1 and 3 it is shown an axonometric view of an embodiment of the panel according to the present invention;
in figures 2-a and 2-b it is shown a section view of the installation mode of two panels positioned side by side (section A-A of figure 4)
in figure 4 it is shown a plan view of four panels positioned side by side (for clarity the edges of the panels are represented with solid line also where these are overlapped).
In figures 5 and 6 it is shown a section view (along the section B-B of figure 4) of the installation mode of panels positioned side by side frontally (in the following with the term "frontal side" it is referred to the short side of panels in figure 4, with the term side to the long side of the panels in figure 4. This notation is to be intended only for the present description and does not limit the possibility to realize panels which, observed in plan, have different proportion between the two dimensions).
In figures 7 and 8, there are shown two axonometric views of panels positioned side by side frontally, according to what shown in section in figure 5.
In figures 9 to 12 there are shown examples of panels known at the state of the art.
In figure 13 it is shown a section view of an embodiment of a panel according to the present invention comprising an inner lining.
Detailed description of the invention
[0014] As it is shown in figures 1 and 2, according to a preferred embodiment the panel (10) according to the present invention comprises an upper fretted sheet (101) and a lower fretted sheet (102) between which it is interposed a layer in insulating material (103).
[0015] It is to be precised that, even if for shortness in the text it will be used the term "fretted sheet", it is to be intended that the upper layer and the lower one can be realized, in addition to in steel, also in other materials, and in particular in fiberglass, PVC, polycarbonate, fibre cement.
[0016] It is also to be precised that what is shown in figure 1 is relative to a bent panel but, without departing from the aims of the present invention, what is described can be applied to straight panels.
[0017] As it is shown in figure 1, both the upper sheet (101) and the lower sheet (102) are provided with a fret (104, 105) which goes out from the insulating layer (103). The reason for this geometric arrangement is clear from the analysis of figure 2-b, where there are shown two panels (10, 30) positioned side by side.
[0018] The analysis of figure 2-b allows also to appreciate that the insulating layer (103) of the left panel (10) and the insulating layer (303) of the right panel (30) are configured geometrically so that the two panels can be constrained the one with respect to the other by simply translating the right panel in the oblique direction of the frets, up to reach the position of figure 2-a.
[0019] As it is shown in figure 2-a, once the panels are positioned side by side, it happens that the projecting lower fret (105) of the left panel (10) surrounds the last lower fret (306) of the right panel (30), and the same happens with the projecting upper fret (304) of the right panel (30) which surrounds the fret (107) of the left panel (10).
[0020] The difference with respect to the panels known at the state of the art is clear. Also in case of building of condensate or infiltrations in the space between the two panels (10, 30), the water would slide on the lower sheet (102) of the left panel (10), thus collecting on the end fret (105). Hence, the slope of the cover would allow to convey water according to the direction indicated with the arrows in figure 3 to the gutter channel.
[0021] In this way, the possible phenomena of dropping which occur with the panels known at the state of the art are avoided, as well as the need to apply sealing products or gaskets to the connections between the two panels.
[0022] It is to be considered also, from the analysis of figure 1, that it is clear that the panel (10) can be installed independently with the one or the other surface facing upwards and, so, there is no need to turn it over in the building site.
[0023] Yet, the analysis of figure 1 highlights also that the panels are simply stackable and allow to optimize the volumes of storage and transportation. In figure 5 it is shown a view according to section B-B of figure 4. As it is shown in figure 5, the upper sheet (401) of the upper panel (40) projects with respect to the layer in insulating material (403) and to the lower sheet (402). Similarly, the lower sheet (302) of the lower panel (30) projects with respect to the upper sheet (302) and to the insulating layer (303). This allows, by positioning the panels side by side, to obtain the configuration of figure 5-a; the condensate possibly infiltrated from the connection slides on the lower sheet of the left panel (30) to the gutter channel.
[0024] The condensate and the infiltrations possibly collected from the connections of the panels which are upstream (to the right of the upper panel (40)) are collected by the lower panel (30) owing to the superimposition of the lower sheets: the lower sheet (402) of the right panel (40) is in fact arranged on the corresponding sheet (302) of the left panel (30), and in this way it is provided a "funnel" effect.
[0026] Therefore the kind of the both frontal and side connection of the panels shown is such that, also without gaskets interposed between the insulating layers of adjacent panels, it is not possible that the condensate or atmospheric precipitations pass under the covers thus causing droppings.
[0027] As it is shown in figure 13, according to another embodiment the panel (50) according to the present invention can be associated to a lining on the side mounted inside (501). The lining can be any suitable material (PVC, polycarbonate, plasterboard, wood) and, for the structure of the panel, both side and frontal connections of different panels can be obtained according to what yet described. In this way the laying of a cover intended to be finished by stucco and painting is obtained in extremely rapid way without any other interventions.
[0028] It is to be considered that with provision of the inner lining (501), it is yet more important to avoid droppings from the cover, since the dropping water could be absorbed by the lining (in particular if it is in plasterboard) with clear consequences on the seal and the aesthetic aspect of the cover.
[0029] It is to be considered that all the combinations of the yet described elements are possible, with reference to the shape of the panel (flat or bent), with or without the inner lining, to the insulating material (EPS, polyurethane, mineral wool, other) and to the material of the outer layers, which are referred to with the term "fretted sheet", but which could be realized in fiberglass, PVC, polycarbonate or other materials, possibly in different materials on the two surfaces as well. In particular PVC or other thermo-weldable material can be used outside.
1. Insulated multilayer panel (10, 20, 30, 40, 50) for realizing covers comprising:
- a first fretted sheet (101, 301, 401)
- a second fretted sheet (102, 302, 402),
- a layer in insulating material (103, 303, 403) interposed between said first and
second sheet,
characterized in that
said first fretted sheet (101, 301, 401) projects with respect to said layer in insulating
material (103, 303, 403) in the direction orthogonal to the fret one for a width equal
to the end rib (105), and said second fretted sheet (102, 302, 402) projects with
respect to said layer in insulating material (103, 303, 403) in the same direction
and opposite with respect to the projection of said first fretted sheet for a width
equal to the end rib (104, 304).
2. Insulated multilayer panel (10, 20, 30, 40, 50) for realizing covers according to
claim 1, characterized in that a first panel (10) and a second panel (30) can be installed side by side and by positioning
said projecting ribs (105, 304) overlapped with respect to the last rib (107, 306)
of the adjacent panel.
3. Insulated multilayer panel (10, 20, 30, 40, 50) for realizing covers according to
claim 1 or 2, characterized in that said first fretted sheet (101, 301, 401) projects with respect to said layer in insulating
material (103, 303, 403) in the direction of the fret, and said second fretted sheet
(102, 302, 402) projects with respect to said layer in insulating material (103, 303,
403) in the same direction but opposite with respect to the projection of said first
fretted sheet.
4. Insulated multilayer panel (10, 20, 30, 40) for realizing covers according to any
one of the preceding claims, characterized in that said panel is bent.
5. Insulated multilayer panel (50) for realizing covers according to any one of the preceding
claims, characterized in that said panel is flat.
6. Insulated multilayer panel for realizing covers according to any one of the preceding
claims, further comprising a layer of inner lining (501).
7. Insulated multilayer panel for realizing covers according to any one of the preceding
claims, characterized in that at least one of said sheets is realized in steel sheet, the other sheet being realized
in steel sheet, or PVC, or fiberglass.
8. Insulated multilayer panel for realizing covers according to claim 6 or 7, characterized in that said inner lining is realized in plasterboard, wood or fibre cement.