EP0433164B1 - Insulating and fireproofed partitioning panel - Google Patents

Description

The invention relates to an insulating and fire-resistant partition panel.

Panels of this type are already known which generally comprise a sandwich structure formed from a rock wool core comprised between two facings.

These panels are not entirely satisfactory since there is necessarily a mechanical connection between the two facings, which creates thermal and sound bridges.

In addition, the mounting of these panels known to each other requires assembly means, such as metal profiles, which also constitute a source of thermal and sound bridges.

It is also known, from US-A-4,024,309, an insulating and fire-resistant panel comprising a glass foam core comprised between two facings each formed from a metal sheet, to form a composite sandwich-type structure .

Such a panel is produced by pouring hot and vacuum molten glass foam between the two facing faces arranged opposite.

This casting operation must be done at a temperature of about 800 ° C, so that it is impossible to use panels already provided with a coating.

In addition, an internal coating, for example aluminum, must be provided on the facings to facilitate the bonding of the facings with the glass foam.

It is also known, from FR-A-2 242 529, a prefabricated building panel comprising a glass foam core comprised between a resistant external face and a layer of plaster.

It is in fact a self-supporting panel and not a fire barrier.

Furthermore, it is known from GB-A-1 116 700, an insulating panel comprising an insulating core between two facings.

However, this insulating core is not made of glass foam and therefore does not make it possible to obtain the insulating characteristics of the latter.

It is therefore one of the objects of the invention to provide an insulating and fire-resistant partitioning panel which makes it possible to avoid the drawbacks mentioned above.

It is, in particular, an object of the invention to provide such a panel which has excellent insulating and fire-resistant characteristics and which does not entail the creation of thermal and sound bridges.

It is also an object of the invention to provide such a panel which can be installed easily, and this without requiring complicated tools.

The invention relates more particularly to an insulating and fire-resistant partitioning panel of the type described in US-A-4,024,309.

This panel is characterized in that the core is formed from adjacent glass foam blocks and in that the glass foam core is bonded to the two facings by a two-component polyurethane adhesive.

In the context of the invention, the term "glass foam" means to design cellular glass with closed pores which is usually in the form of blocks.

According to another characteristic of the invention, the metal sheet of the facings, for example steel or aluminum, optionally comprises an external coating, for example a pre-lacquering or a plastic coating of the PVC type.

In a first embodiment of the invention, each of the facings is a metal sheet half-shell comprising a rectangular flat plate which has, on its four sides, edges folded towards the edge of the panel.

As the two facings are glued on either side of the glass foam core, it is not necessary to provide a mechanical connection between the folded edges of the two half-shells, which eliminates the creation of thermal bridges or phonic.

Advantageously, two respective folded edges of the two half-shells, situated on the same side of the panel, constitute means for assembling the panel to an adjacent panel. Preferably, such assembly means are provided on the two vertical sides of the same panel.

In a preferred embodiment of the invention, each of the folded edges comprises a first part perpendicular to the plate and folded over the edge of the panel, of width less than half the thickness of the core, a second folded part perpendicular to the first part and a third part folded perpendicular to the second, the two folded edges located on the same side of the panel being adapted to cooperate with the two folded edges homologous of an adjacent panel to receive two clips of U-section clipping each comprising a central core extending parallel to the plane of the panels and two wings each coming to bear against the first part of a folded edge, and this by means of a spring.

It is then sufficient, during assembly, to place the panels adjacent to one another and to force fit each time, two clipping profiles.

In another variant, the two respective folded edges of the two half-shells have a first part folded towards the edge of the panel and a second part folded parallel to the plane of the panel so as to form a male-type casing element. Advantageously, an insulating seal is bonded between the respective second parts of the folded edges to form a tongue, and this without creating thermal or phonic bridges between the two half-shells.

Still in this variant, the two respective folded edges of the two half-shells have a first part folded towards the edge and a second part folded in the thickness of the glass foam to form a casing element of the female type.

This female casing element can cooperate with a male element as defined above.

As a variant, it is possible to provide a false tongue glued in a female type casing element to then form a male type casing element.

In another embodiment of the invention, each facing is a metal sheet extending over the entire surface of the panel. In such a case, the sheet does not have folded edges as defined above.

Advantageously, each panel comprises in its edge which extends on at least one side a groove suitable for receiving a false tongue with a generally rectangular section. Thus, when the false tab of a panel is engaged in the groove of an adjacent panel, there is practically no visible joint between the two panels.

The groove formed in the edge of the panel is advantageously defined by a sheet metal profile engaged in the thickness of the glass foam core.

Preferably, a fire-resistant seal is placed between two adjacent panels on either side of the false tongue.

This false tongue is advantageously constituted by a section of generally rectangular section. It can be a solid profile or even a resistant hollow profile, in particular for the case of very high panels.

• la figure 1 est une vue partielle en coupe transversale de l'assemblage de deux panneaux dans une première forme de réalisation de l'invention;
• la figure 2 est une vue en coupe horizontale d'une cloison comportant au moins un panneau tel que représenté à la figure 1;
• la figure 3 est une vue en coupe d'une cloison en angle;
• la figure 4 est une vue en coupe horizontale d'une cloison comportant au moins un panneau de cloisonnement dans une autre forme de réalisation;
• la figure 5 est une coupe verticale montrant le montage du bas d'un panneau;
• la figure 6 est une vue en coupe verticale montrant un autre montage du bas d'un panneau;
• la figure 7 est une vue en coupe horizontale montrant l'assemblage de deux panneaux dans une autre forme de réalisation;
• la figure 8 est une vue en coupe verticale montrant l'assemblage de panneaux conformes à la figure 7;
• la figure 9 est une vue en coupe horizontale montrant l'assemblage de deux panneaux dans une autre forme de réalisation;
• la figure 10 est une vue en coupe horizontale de l'assemblage de deux panneaux dans une variante de réalisation; et
• la figure 11 est une vue en perspective montrant la réalisation d'un panneau de cloisonnement sous forme d'une plinthe.

In the description which follows, given solely by way of example, reference is made to the appended drawings, in which:

• Figure 1 is a partial cross-sectional view the assembly of two panels in a first embodiment of the invention;
• Figure 2 is a horizontal sectional view of a partition comprising at least one panel as shown in Figure 1;
• Figure 3 is a sectional view of a corner partition;
• Figure 4 is a horizontal sectional view of a partition having at least one partition panel in another embodiment;
• Figure 5 is a vertical section showing the mounting of the bottom of a panel;
• Figure 6 is a vertical sectional view showing another mounting of the bottom of a panel;
• Figure 7 is a horizontal sectional view showing the assembly of two panels in another embodiment;
• Figure 8 is a vertical sectional view showing the assembly of panels according to Figure 7;
• Figure 9 is a horizontal sectional view showing the assembly of two panels in another embodiment;
• Figure 10 is a horizontal sectional view of the assembly of two panels in an alternative embodiment; and
• Figure 11 is a perspective view showing the production of a partition panel in the form of a plinth.

Reference is first made to FIG. 1 which shows the assembly of two panels 10 according to the invention. Each panel 10 comprises a core 12 formed from blocks of glass foam, of the same thickness, bonded respectively to two facings 14. In this embodiment, each facing 14 is a half-shell comprising a rectangular plate folded over its four sides. In the example, each of the half-shells is folded over its vertical sides to form a folded edge 16. Each folded edge 16 comprises a first part 18 folded at right angles in the edge of the panel and extending over a width less than the half-thickness of the core 12. The first part 18 is connected perpendicularly to a second part 20 parallel to the plane of the panels, which is connected perpendicularly to a third part 22 which extends over a small width. When the panels are arranged adjacent to each other, as shown in FIG. 1, the four folded edges 18 receive two clipping profiles 24, of U-shaped section. Each profile comprises a central core 26 parallel to the plane of the panels and two wings 28 coming from each bearing against the first part 18 of a folded edge 16, and this by means of a spring 30. In the embodiment shown, four springs 30 are used, which each enclose the second part 20 and the third part 22 with a folded edge 28.

The panels 10 shown in Figure 1 may have, for example, a height of 2.50 meters to 3.50 meters and a width corresponding to a frame of 60 or 90 centimeters. In the example, the panels have a total thickness of 50 millimeters.

To improve the insulating and fire-resistant properties of the panels at the level of their assembly, provision is made, on the one hand, for a joint 32 arranged in the space defined by the four second parts 20 of the folded edges 16 and, on the other hand , two seals 34 disposed respectively in the bottom of the clipping profiles 24. These seals are advantageously constituted by a mattress of alumina silicate fibers.

Referring now to Figure 2 which shows, in section, a partition comprising a partition panel 10 identical to those of Figure 1 and having a horizontal frame T. The panel 10 is assembled, by one of its vertical sides , on a junction element 34 constituted by a U-shaped profile having two folded edges 36 spaced from one another, of a configuration similar to that of the folded edges 16 of the panel. The element 34 is fixed by its wings to another joining element 38 constituted by a U-section profile. The element 38 has a core 40 which is fixed to a wall or a transverse partition 42 by means of screws 44. In the space defined between the elements 34 and 38 is provided a lining 46, for example formed of alumina silicate fibers. The panel 10 is fixed to the junction element 34 by means of two clipping profiles 24 identical to those shown in FIG. 1.

The opposite vertical side of the panel 10 is fixed, by means of two clipping profiles 24, to an upright of frame 48 having two folded edges 50 of the same configuration as that of the folded edges 16 of the panel 10. The amount 48 part of a frame 52 which includes another upright 54 also provided with two folded edges 53. The upright 48 includes hinges 56 for mounting a door 58 having a core 60 of glass foam. The uprights 48 and 54 also include a fire-resistant lining, for example based on alumina silicate fibers.

In the rebate of the uprights of the frames are placed two seals 55 and 57 of a different nature. The seal 55 is an isophonic polyethylene foam seal which is placed in the bottom of the rebate. The seal 57 is an intumescent seal which is located next to the seal 55 and close to the edge of the rebate, in a plane parallel to that of the door 58. The seal 57 is a hard seal which cannot be used as a shock absorber during closing the door. The seals 55 and 57 form a fire-resistant continuity between the door and the partition.

In the event of a fire on either side of the door, there is always a fire, smoke and gas tightness. Indeed, the intumescent seal 57 increases in volume, for example quadruple in volume, and thus creates a seal at the bottom of the rebate.

Referring now to Figure 3 which shows the angled connection of two panels 10 according to the invention by means of a clipping profile 24 similar to those of Figures 1 and 2 and a clipping profile 62 forming return d 'angle. This profile 62 has the shape of an angle iron which is provided with a wing 64 of structure similar to the wing 28 of the profile 24 and with a folded edge 66 of configuration similar to that of a folded edge 16 of a panel 10. The wing 64 is clipped into the folded edge 16 of one of the panels 10, while its folded edge 66 cooperates with a folded edge 16 of the other panel 10 to receive the clipping profile 24. Mattresses 68 and 70 in insulating and fire-resistant material, for example in alumina silicate, are disposed respectively in the profile 62 and the profile 24. In addition, two other mattresses 72 and 74 are provided inside the junction d 'angle. In the interior corner of the two panels an X-shaped extruded seal 76 is provided, for example based on neoprene, or in extruded silicone.

Referring now to Figure 4 which shows a partition comprising a panel 80 according to the invention having a core 12 of glass foam and two plates 84 forming half-shells. On one of the vertical edges of the panel 80, the two plates 84 define folded edges 16 similar to those described above. By its two folded edges 16, the panel 80 is assembled on an upright of frame 48 similar to that of FIG. 2. This upright also comprises two folded edges 50 allowing the assembly of the panel 80 and the upright 48 by two profiles of clipping 24. The upright 48 is part of a frame 52 comprising a door 58 provided with a core 60 of glass foam.

On the other vertical side of the panel 80, the shells 84 form two folded edges 86. Each edge 86 comprises a first part 88 forming, with the plane of the panel, an angle slightly less than 90 °, and a part 90 which s extends parallel to the plane of the panel. The two parts 90 are joined together to form a male element 92 in the form of a false tongue. By its assembly element 92, the panel 80 cooperates with a panel 94 comprising two facings 96, in the form of half-shells, and a core 98 of glass foam. The facings 96 comprise two folded edges 100 each constituted by a first part 102 folded at a right angle and having a width less than the half thickness of the core 98 and a second part 104 which extends towards the inside of the panel. The two parts 104 define between them a housing for receiving the false tongue 92.

On its opposite side, the panel 94 has two folded edges 86 similar to those of the panel 80. The panel 94 is fitted into a U-shaped joining profile 106, the core 108 of which is fixed to a partition 110.

As shown in FIG. 5, the half-shells 14 of the panel 10 form, in the lower part, two folded edges 112 which provide between them an empty space 114. The base of the panel 10 is fitted into a horizontal profile 116, with a cross-section U, which is fixed, by spot welds 118, to a metal floor 120. A layer 122 of a fire-resistant anti-vibration material is interposed between the bottom of the profile 116 and the base of the panel 10. A layer of a material 124 is placed on the floor 120 to smooth the floor.

In the embodiment of Figure 6, the two half-shells 14 of the panel 10 have, in the lower part, folded edges 126 which extend in the extension of the plane of the panel. The two edges 126 allow the base of the panel to be fitted onto a profile 128 welded to the floor 120. The profile 108 is a hollow profile of generally rectangular section split on one of its large bases to affect the general shape of an omega.

Reference is now made to FIG. 7 which shows the assembly of two panels 130 according to the invention. Each panel includes a core 132 of glass foam glued to two sheet metal facings 134, for example of steel, by means of a layer of adhesive 136. The facings 134, forming half-shells, have folded edges 138 forming an angle close to 90 ° with the plane of the panel. The folded edges 138 have respective ends 140 located a short distance from each other. In the core 132 of the panel 130, located on the left side of FIG. 7, a groove 142 is arranged in which a false is fixed. tongue 144 by means of a layer of adhesive 146. This tongue is capable of cooperating with a groove formed by a U-shaped profile 148 whose free edges are joined at the ends 140 of the folded edges 138 of the other panel 130. The profile 148 thus forms a female element capable of cooperating with the false tongue 144. To perfect the seal between the two panels, a joint bottom 150 is provided, for example made of polyethylene foam, bonded at 152 to the edge. of the panel 130 on the left, on either side of the tongue. There are also two seals 154, for example made of silicone, in the outermost regions of the wafer. When the two panels 130 are fitted one inside the other, the seals 150 are crushed, as are the seals 154, the excess material being able to be scraped from the outside. This gives a practically invisible connection between the two panels.

Referring now to Figure 8 which shows two panels 156 and 158 similar to the panels 130 of Figure 7, arranged respectively vertically to form a partition and horizontally to form a ceiling. The panels 156 and 158 are interconnected by a corner panel 160 produced according to the same principle and comprising a core 162 of glass foam. The panels 156 and 158 are assembled to the panels 162 respectively by false tabs 144. The false tab 144 connecting the panels 158 and 162 is welded to an upper clip 164 allowing the assembly of the assembly. Furthermore, a screw jack 166 is provided to maintain the spacing between the panel 162 and a vertical wall 168.

Reference is now made to FIG. 9 which shows two panels 170 with a structure similar to that of the panels 130 of FIG. 7. Each panel comprises a core 172 of foam of glass between two half-shells 174 made of sheet metal. Each of them includes a folded edge 176 not perpendicular to the plane of the panel. Each edge 176 has an extension 178 which extends perpendicular to the plane of the panel. The extensions 178 of the same panel serve for fixing to a U-shaped profile 180 and this by means of rivets 182. The assembly of the two panels is carried out by means of a false tongue 184 which is fixed by a layer glue 186 in one of the two profiles 180. The seal of the assembly is obtained by two compressible seals 188, for example made of polyethylene foam, and two seals 190 made of a material liable to creep, for example silicone.

In the embodiment of FIG. 10, to which reference is now made, a false tongue 192 is used, constituted by a hollow tube of rectangular section instead of an N bar as in the case of FIG. 9. The use of such a tube is particularly recommended for the production of very high walls.

Reference is now made to FIG. 11 which shows a partition panel according to the invention produced in the form of a plinth. The panel 240 comprises a core 242 of glass foam glued between a facing 244 and a facing 246. The plinth 240 further comprises a removable cover 248 which defines with the facing 246 a hollow space for the passage of an electric wire 250 and a telecommunications wire 252 connected respectively to two sockets 254 and 256 integral with the cover 248. The plinth 240 can be placed on the ground, for example using a U-shaped profile as shown in Figure 5, and it can then receive one or more panels according to the invention superimposed vertically on the plinth.

Bonding of the glass foam core to the sheet metal facings is carried out using a two-component polyurethane type adhesive.

To make such a panel, one of the facings is placed horizontally, a layer of adhesive is deposited on the internal face of the facing, then blocks of glass foam of the same thickness are placed adjacent to fill the entire surface of the facing. , another layer of the neck is deposited on the visible face of the core thus formed and the second facing is then applied. This is applied under pressure and, if necessary, the hardening of the adhesive is accelerated by heating.

The partitioning panels of the invention can be produced in different shapes and different dimensions. These panels can be flat, curved, bent, etc.

In all cases, panels are obtained which are particularly resistant to fire and which do not create thermal bridges or sound bridges.

Claims (12)

1. Insulating, fire-retardant partitioning panel comprising a glass foam core (12) between two wall faces (14) each consisting of a sheet of metal, so as to form a sandwich-like composite structure, characterised in that the core (12) consists of adjacent blocks of glass foam and in that the glass foam core (12) is joined to the two wall faces (14) by a dual-component polyurethane adhesive.
2. Panel according to claim 1, characterised in that the sheet metal of the wall faces (14) is steel or aluminum for example and possibly comprises an external coating, e.g. a varnish undercoat or PVC-type plastics covering.
3. Panel according to either of claims 1 or 2, characterised in that each of the wall faces (14) is a sheet-metal half-shell comprising a flat rectangular plate having, at its four sides, edges (16) which are bent back towards the cut edge of the panel.
4. Panel according to claim 3, characterised in that each of the bent-back edges (16) of the two half-shells (14), located on the same side of the panel forms a means of connecting one panel to an adjacent panel.
5. Panel according to claim 4, characterised in that each of the bent-back edges (16) comprises a first part (18) perpendicular to the plate of the half-shell, which is bent back on to the cut edge and has a width smaller than half the thickness of the core, a second part (20) bent perpendicular to the first part, and a third part bent back perpendicular to the second part, the two bent-back edges (16) on the same side of the panel (10) being capable of cooperating with the two homologous bent-back edges of an adjacent panel so as to receive two clip profiles (24), which have a U-shaped section and comprise a central core (26) parallel to the plane of the panels and two wings (28) each bearing against the first part (18) of a bent-back edge (16) under the action of a spring (30).
6. Panel according to claim 4, characterised in that each of the two bent-back edges (86) of the two half-shells (80) comprises a first part (88) bent back towards the cut edge and a second part bent back parallel to the plane of the panel so as to form a male rebate element (92).
7. Panel according to claim 4, characterised in that each of the the two bent-back edges (100) of the two half-shells (80) comprises a first part (102) bent back towards the cut edge and a second part (104) bent back into the thickness of the glass foam core (98) so as to form a female rebate element.
8. Panel according to claim 7, characterised in that a false tongue (144) is glued into the female rebate element so as to form a male rebate element.
9. Panel according to either of claims 1 or 2, characterised in that each wall face is a sheet of metal extending over the entire surface of the panel.
10. Panel according to claim 9, characterised in that it comprises, in the cut edge extending over at least one side of the panel, a groove for receiving a false tongue (184; 192) having a generally rectangular cross-section.
11. Panel according to claim 10, characterised in that the groove is defined by a sheet-metal profile (180) engaged in the thickness of the glass foam core.
12. Panel according to claim 10 or 11, characterised in that a fire-retardant joint (150, 154; 188, 190) is placed between two adjacent panels on either side of the false tongue.

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