EP2309066A1 - Insulating, fire-resistant panel and wall comprising several panels - Google Patents

Abstract

The panel (2) has a metal sheet (10) covering an insulating core on a face, where the core is made of insulating material. Tabs (4) made of insulating and rigid material form two opposite edges of the panel. The tabs include a hole or orifice (18) close to each corner of the panel, where the hole is perpendicular to a face of one of the tabs forming an edge of the panel and close to a face of the core opposite to a face of the metal sheet. The hole or orifice cooperates by engagement with a dowel pin placed in corresponding hole of an identical adjacent panel.

Description

Technical area

The invention relates to an insulating and fire-resistant panel of polygonal shape, more particularly of rectangular shape and intended to be arranged with other identical or similar panels so as to form an insulating wall and resistant to fire. More particularly, the panels are of the sandwich type having a core of insulating material covered with a finishing sheet. This type of construction is particularly suitable for cold room cladding which requires good insulation.

Prior art

Polyurethane foam is a cellular insulation, composed of fine cells storing a gas with low thermal conductivity. It is very used in the building. Polyurethane is however a flammable material. In the United Kingdom, Ireland and some US states, regulations require upholstered furniture manufacturers (sofas, mattresses) to treat products with fire-retardant chemical additives to reduce this risk. Many areas of use of polyurethane foams require "non-fire" properties. In the building sector, for public places, foams must be treated with fire. The use of this insulation is subject to an increased fire risk for insurers. Used in a metal cladding, it releases an acid in case of fire that destroys the metal siding and damages the strength of the building structure

For these reasons, room vests constructed with polyurethane sandwich panels must be able to maintain their stability for a specified period of time during a fire. They must be constructed in such a way that the spread of fire and smoke is restricted to the interior of the chamber in question so as to limit the spread of fire.

One solution is to provide a "sprinklage" but this solution is of limited application because it is not suitable for cold rooms in negative temperature. In addition, this solution is quite cumbersome to implement and therefore quite expensive.

The patent document DE 295 18 473 U discloses an insulating sandwich panel and fire resistant. It includes a metal finishing sheet on each side, reinforcing sleepers made of calcium silicate material or reinforced mineral or ceramic fibers. The core of the panel is filled with insulating material such as rockwool, ceramic fiber or calcium silicate. This type of material, however, poses problems of microbial proliferation. In addition, it does not exhibit dimensional stability and mechanical rigidity comparable to a rigid material such as polyurethane foam or cellular glass. It is probably for this reason that the back of the panel is also covered with a metal sheet and that the panel includes several reinforcing crosspieces. The termination of the edges of the panel is provided by longitudinal members of material similar to the sleepers. These longitudinal members have on their outer faces forming the slices of the panel grooves for cooperating with a folded edge of the metal sheets. The assembly of the panels is done by approximation and superposition of the edges possibly having corresponding profiles. The document does not further specify how the panels are attached to the structure to receive the cladding. The construction of the panel described in this document is not intended for a core of rigid material given the many reinforcements and the flexible nature of the insulating material intended to equip it. The connection between the metal sheets and the longitudinal members is interesting but requires the presence of a retaining members of both sides of the panel, given the absence of bonding between the longitudinal members and the insulating material.

Summary of the invention

The object of the invention is to propose a sandwich panel that overcomes at least one of the aforementioned problems.

The invention consists of an insulating and fire-resistant panel of polygonal shape comprising: a core made of a first insulating material; a metal sheet covering the soul on one side; at least two tabs of a second insulating and rigid material forming at least two opposite edges of the panel; where said tongues comprise at least one hole near each corner of the panel, perpendicular to the face of the tongue forming the edge of the panel and preferably near the face of the core opposite to the face provided with the metal sheet, said hole being adapted to cooperate by engagement with an ankle disposed in the corresponding hole of an identical adjacent panel. This solution allows an easy, reliable and fast assembly of a wall consisting of a series of such panels. Ideally, the second material is of higher density, preferably by a factor greater than or equal to 5, to that of the first material, so as to ensure proper holding of the dowels in the holes of the tongues.

The reference to the face of the core provided with the metal sheet in the definition of the invention above and in the optional features that follow preferably corresponds to the visible or external face of the panel once mounted. It does not exclude the present of a second sheet on the opposite face, preferably hidden or interior. The invention can in fact be made with a second metal sheet disposed on the opposite face of the panel, more particularly the insulating core, as in the embodiment.

According to an advantageous embodiment of the invention, the first insulating material of the core is rigid and, preferably, the tongues are glued to said core. This measurement provides interesting mechanical stability, especially with respect to fire protection.

According to another advantageous embodiment of the invention, the metal sheet is glued to the core. This measurement also provides an interesting mechanical stability, particularly with respect to fire protection.

According to yet another advantageous embodiment of the invention, the panel comprises a layer of the second material disposed between the core and the metal sheet; the metal sheet, the layer of the second material and / or the core being preferably assembled by gluing. Like the previous measurements, this measurement ensures an interesting mechanical stability, especially with respect to fire protection. The layer of the second material disposed between the core and the metal sheet is typically between 5% and 20% of the total thickness of the panel. It is therefore a thin layer relative to the thickness of the core constituting most of the thickness of the panel.

According to another advantageous embodiment of the invention, the metal sheet comprises at least two folded edges on the tongues, each forming an edge and fixed to said tongues by screwing, preferably near the edge on the half of the edge of the panel. on the side of the ridge.

According to another advantageous embodiment of the invention, the tongues have a thickness measured in the plane of the panel of at least 10 mm and said second material is such that it allows to screw a self-tapping screw. To do this, the second material is of higher density, preferably by a factor greater than or equal to 5, to that of the first material.

According to yet another advantageous embodiment of the invention, the panel comprises at least one reinforcing angle of sheet metal conforming to the edge of one of the tongues and covering the face of the tongue forming the edge of the panel from said edge sufficiently that for covering the holes intended to cooperate by engagement with dowels, said angle being preferably fixed by screwing in the tongue.

According to another advantageous embodiment of the invention, the face of at least one of the tongues is provided with intumescent paint, preferably on its central zone, more preferably still between the reinforcing angle and the folded edge of the metal sheet.

According to yet another advantageous embodiment of the invention, the first material is based on cellular glass and / or the second material is based on reinforced magnesium silicate.

According to yet another advantageous embodiment of the invention, the panel comprises four tongues opposite in pairs made in the second insulating and rigid material.

The invention also consists of an insulating wall and fire resistant comprising at least four panels such as that described above, said panels being arranged contiguously substantially in the same plane and with, for each panel, at least two edges arranged each facing a corresponding edge of another of said panels with, for at least one pair of face-to-face edges, at least one, preferably two pins cooperating by engagement with the corresponding holes of said pair of edges, the wall also comprising at least one plate comprising at least two holes and arranged astride two aligned edges of two of said panels, on either side of said pair of face-to-face edges, the holes of the plate being positioned each, through one of the pegs cooperating with a hole in one of the two aligned edges, near the junction of said pair of edges facing each other. face.

According to an advantageous embodiment of the invention, the plate comprises an angled part intended to be fixed preferably by screwing to a wall or a wall opposite the faces of the panels opposite to those covered with the metal sheet.

According to another advantageous embodiment of the invention, the plate is generally flat and comprises a hole remote from the faces of the panels opposite to those covered with the metal sheet, and intended to cooperate with fastening means suspended from a ceiling.

According to a still further advantageous embodiment of the invention, a seal is placed between the two folded edges and face to face of the metal sheets of two contiguous panels, close to the outer surface of said sheets, the fastening screws of said folded edges being remote from corresponding edges so as to provide the necessary space for said seal.

According to yet another advantageous embodiment of the invention, the gasket is fire-resistant material and is of circular section inserted by insertion or is applied by extrusion.

Brief description of the drawings

The figure 1 is a perspective view of a panel according to the invention. It includes an enlarged view of a corner of the panel illustrating different construction details.

The figure 2 is a sectional view of two panels according to the invention, superimposed vertically and dressing a wall or a wall.

The figure 3 is a perspective view of an assembly of three panels according to the invention intended to dress a wall or a wall.

The figure 4 is a sectional view of a panel according to the invention covering the bottom of a wall or a wall and in contact with the ground.

The figure 5 is a plan view of the cladding of the upper part of a wall or wall and ceiling by means of panels according to the invention.

The figure 6 is a perspective view of detail of the junction of three panels according to the invention, also illustrating the suspension means of the panels to the ceiling.

Description of the embodiments

The insulating and fire resistant board 2 shown in figure 1 consists of a cellular glass core (not visible at the figure 1 ) whose shape corresponds essentially to that of the panel, this core being covered on its rear face with a metal sheet 8 and on its front face of a thin fibro-silicate panel, itself covered with a metal sheet 10 on its outer face. Tongues 4 and 12 of fibro-silicate are provided on the periphery of the insulating core so as to form the edges of the insulating panel. These tongues are preferably arranged by gluing on the edges of the thin fibro-silicate panel thereby forming a parallelepipedal volume capable of receiving the insulating core.

The metal sheet 8 forming the rear face of the panel 2 has two edges bent at about 90 ° at two opposite ends so as to partially cover the tabs or opposite edges 12 of the panel 2. Metal brackets 6 made from pieces of sheet metal which are then folded are arranged on the edges of the rear face of the panel 2 which are not covered by the sheet 8. These angles are preferably unequal so as to have a longer edge on the tongue 4 than on the rear face of the panel 2 The panel comprises two angles, one on each opposite side of the panel 2 where the rear plate 8 does not cover the wafer. Each angle 6 extends over substantially the entire length of the edge of the panel 2. They are fixed by means of screws 16, preferably at least one near each end of the edge to be covered. Each bracket 6 comprises at least one hole or hole 18 near each end. This orifice is in correspondence with a hole or orifice 18 made in the tongue 4, thus serving as a reinforcement of said orifice. The orifice 18 will serve as a connecting means of two adjacent panels.

The front face of the panel 2 is covered with a metal sheet 10, preferably the four edges are folded at about 90 ° so as to cover the four edges of said face and also a portion of the tongues 4 and 12 forming the edges or edges of the panel 2. These folded edges are attached to the opposite tabs 4 by means of screws 14.

The construction of the panel 2 can be better understood in view of the figure 2 which is a sectional view of two pieces of vertically superposed panels and covering a wall or a wall 26. On the representation of the upper panel as well as that of the lower panel, the layer of insulating material 22 is observed, such as cell glass constituting the core of the panel to be insulating and fire resistant. This core of insulating material is covered with a thin layer 20 also insulating material but substantially more resistant from a mechanical point of view, such as fibro-silicate. The insulating core 22 and the thin layer 20 constitute the major part of the thickness of the panel. They are surrounded by tabs 4 of material similar or identical to that of the thin layer, that is to say of non-flammable material, insulating and having a certain mechanical strength so as to serve as reinforcement of the panel and connecting means of the panels between them. As previously explained in relation to the figure 1 , the panel 2 comprises four tongues, namely two tongues 4 of a first thickness on the two opposite edges comprising the orifices 18 and two tongues of a second thickness on the other two remaining opposite edges which themselves are not necessarily provided with means of linking the panels together. The tongues 4 of a first thickness typically have a thickness of the order of 12 mm and the tongues 12 of a second thickness typically have a thickness of about 6 mm. It should be noted that these values are purely illustrative. For reasons of simplification of construction and assembly, it is of course conceivable to provide the same thickness for the tongues 4 and 12, knowing that the tabs 12 are subjected to less mechanical stresses than the tongues 4. Such a construction would moreover particularly of sense in the case where the panel would be of square form. In this case, the holes or orifices 18 could be provided on the four edges so as to be able to freely orient the panel.

The choice of the material of the insulating core will depend on various parameters, such as the cost price, the quality of insulation, health constraints such as the risk of microbial proliferation and / or resistance to high temperatures. The insulating core 22 will typically be made of Foamglass® T4, namely aluminosilicate cellular glass. This material has a very good dimensional stability, a density of the order of 0.12, a temperature range of use ranging from -260 ° C to + 430 ° C and an incombustibility classified M0 according to the French standard NF P 92-507 . The thickness will be between 40 and 160 mm, more particularly between 40 and 100 mm, typically of the order of 60 mm.

The thin layer 20 and the tongues 4 and 12 will be made of insulating material incombustible and having a certain mechanical strength, such as for example FIBRODICE MS based on magnesium silicate reinforced. The mechanical properties of this material allow it to be sanded, sawn, drilled, nailed, screwed and / or glued. It has a density of the order of 1 (1.050 ± 0.1), a modulus of elasticity of between 5210 and 7845 N / mm ² and a flexural strength of between 12.1 and 17.1 N / mm ² . Silicates are minerals whose skeleton is essentially formed by Silicon and Oxygen tetrahedra supplemented with aluminum, magnesium, iron, calcium, potassium, sodium and other elements. Special purpose glass fibers are microfibers artificial glassy silicates with random orientation and whose weight percentage of alkaline oxides and alkaline earth oxides is greater than 18%. The diameter of these fibers is between 0.01 and 3 microns. There are several types of special purpose fibers, classified according to the chemical composition of the glass: E, 475, 753, 481 ... The most studied are the glass microfiber E and 475. Unlike the asbestos fibers they can not split into fibrils of smaller diameters but intersect transversely. With the exception of glass microfibers 481, they are very sparingly soluble in biological media and have a high biopersistence.

It should be noted that the presence of the thin layer 20 between the insulating core and the front metal sheet 10 is not mandatory. Indeed, although this layer has a role of mechanical reinforcement and protection of the insulating core, its presence remains optional depending, in particular, thermal and mechanical stresses of the panel and the choice of material for the insulating core. The same goes for the tabs 12 ( figure 1 ) forming the edges of the panel which are not intended to cooperate with the connecting means of the panels together.

The front face of the thin layer 20 is covered with a metal sheet 10. As already explained in connection with the figure 1 , the metal sheet 10 comprises at least two opposite edges, ideally the four edges, which are bent at about 90 ° at their ends so as to match the outer shape of the front face of the panel. These folded edges conform to the edges of the front face of the panel and cover a portion, typically at least a quarter, more particularly at least one third of the height of the tongue 4 forming the edge of the panel.

The rear face of the panel, more particularly the rear face of the core 22 is covered with a metal sheet 8. The edges thereof is bent approximately at the edges of the tabs 4, so as to be covered with a metal bracket 6 reinforcement.

The metal sheet of the front face 10 typically has a thickness of the order of 1 mm. Other thicknesses are of course possible depending on the mechanical properties of the sheet and the constraints to which the sign is submitted. The thickness will typically vary between 0.5 mm and 2 mm, preferably between 0.6 and 1.2 mm. The role of the sheet 10 is to ensure a mechanical strength of the panel (shape retention and resistance to penetration during contact with objects), an aesthetic finish, a flame protection screen and a finish compatible with sanitary standards. in force, in particular for the storage of foodstuffs. The sheet may be Aluzinc® which is a flat carbon alloy product composed of 55% aluminum, 43.4% zinc and 1.6% silicon. The steel is continuously coated on a dip galvanizing line. The excellent corrosion resistance of Aluzinc® results from the characteristics of its two metallic components: aluminum on the surface of the coating acts as a barrier to corrosion agents, zinc protects the steel by "sacrificial" effect . Aluzinc® has an aesthetic appearance due to its characteristic silver-colored flush. The surface of the metal deposit is protected by a thin layer of aluminum oxides ensuring the longevity of its brightness.

The rear metal sheet 8 is typically thinner because it comes in addition to the front sheet 10. It provides additional reinforcement of the panel but especially closes the rear face to prevent any microbial proliferation towards the inside of the panel. It should be noted that this rear plate is not indispensable from a mechanical strength point of view of the panel, nor from a point of view of quality of insulation and nor from a point of view of protection against fire. Depending on the application, the sheet metal can be avoided, leaving free the back of the core of insulating material or leaving room for a finishing cover of another type such as a flexible film. The metal sheet 8 typically has a thickness of the order of 0.5 mm. It may however vary between 0.2 and 1 mm depending on the material and the mechanical properties of the sheet and also depending on the application of the panel. The sheet 8 is typically a galvanized steel sheet. It may be Aluzinc® like the front sheet 10 but it is clear that the aesthetic qualities of Aluzinc® will not be useful given the fact that it constitutes the rear face of the panel which is normally intended to be not visible.

A bracket 24 in the form of a bracket is illustrated in FIG. figure 2 . This tab is fixed at one end to the wall 26 by conventional screwing means (not shown) well known to those skilled in the art. The other end of the tab 24 projects from the wall and cooperates with the two superposed panels of the figure 2 by means of a pin, pawn or ankle 30. The figure 2 illustrates only the upper part of the ankle by transparency through the tongue 4 of the upper panel. The pin 30 is inserted by insertion from the top of the bracket 24 when the bottom panel is in place. It is then inserted into a corresponding orifice of the bracket 24 and into the corresponding orifice of the upper edge of the lower panel. The peg ideally has a collar or rim in the middle of its length so as to be able to abut with the upper face of the bracket 24. The upper panel can then be put in place by an approach movement followed by a movement vertical downward to enter the peg into the corresponding hole 18 of the panel. The corner portion 6 surrounding the orifice 18 then comes into contact with the flange of the ankle, thus serving as a spacer.

It should be noted that the various elements constituting the panel as the core of insulating material 22, the thin layer 20, the reinforcing tongues 4 and 12 and the metal sheets 8 and 10 can be assembled by gluing. The figure 2 provides spaces between these different elements illustrating the possibility of collage. The presence of glue between two elements will depend on different parameters such as the surface finish or the mechanical stresses. The rear plate 8 for example may be glued only in a specific manner given the reduced mechanical stresses associated with it.

A sealing bead 28 is applied between the folded edges of the front plates 10 of the two superposed panels. It ensures a seal of the dressing or clothing. It is ideally made of high-resistant material temperatures, such as, for example, DOW CORNING® Firestop 700 Fire-Resistant Putty.

A layer of intumescent paint (not shown) is applied to the edges of the panels, that is to say on the outer faces of the tongues so as to provide a seal against gases and flames in case of fire. Indeed, in case of fire, the sealing bead 28 although able to withstand a certain time, may yield to the extent that the layers of intumescent paint may have swelled and meet to obstruct the passage between the edges of two superimposed panels, thus ensuring reinforced sealing in case of fire.

The figure 3 illustrates the principle of linking the panels together. It is observed that the brackets 24 are arranged, each straddling between two adjacent panels so as not only to ensure a connection of the panels to the wall but also a connection of adjacent panels together.

The figure 4 illustrates a lower panel mounted on a wall and resting on the ground. It is observed that a connecting lug 24 is fixed to the wall 26 with its protruding part of the wall close to the ground 32. A half-pin or a half-pin 30 is previously arranged through the hole of the bracket 24 so as to protrude upwards once the fastening tab 24 is secured to the wall 26. The panel 2 is put in place by an approaching movement followed by a downward movement so that the pin 30 enters the corresponding hole of the lower edge 4 of the panel 2. The area of the angle 6 surrounding the pin 30 bears on the bracket which itself bears on the flange or flange of the pin, the latter being supported on the ground 32. The fixing screw 16 of the folded lower edge of the front plate 10 also bears on the ground 32.

Similarly to the figure 2 a sealing bead 28 is applied between the folded lower edge of the front plate 10 and the ground 32. A layer of intumescent paint is also applied to the lower edge 4 of the panel so as to ensure a reinforced seal in case of fire.

The figure 5 is a plan view of a top part of a bedroom veture, illustrating the connection of the panels to the wall 26 and the ceiling 34. The left vertical panel 2 is arranged parallel to the wall according to the assembly described in connection with the Figures 2 to 4 . The horizontal panels 2 covering the ceiling 34 are identical to the vertical panels covering the wall 26. It is observed that the panels are suspended from the ceiling 34 via adjustable suspensions 38 and plates 40 and 42 connecting the panels. The plate 42 is a cover edge plate which connects the suspension rods 38 and the edge of a single panel. This plate is fixed to the panel by means of a pin and a fixing screw so as to ensure a stable fixation. The plate 42 has a rectangular shape with two orifices or holes on either side of a third upper hole cooperating with the suspension rod. The plate 40 is intended to ensure the dual function of connecting two adjacent panels together and to connect these two panels to a common hanger rod to these two panels. The plate 40 is wider than the plate 42 and has, similarly to the plate 42, two orifices or holes on either side of a third upper hole cooperating with the suspension rod. The spacing between the two lower holes of the plate 40 corresponds to the distance between the adjacent connection holes of two adjacent panels. The plate 40 is connected to the panels via two pins cooperating by insertion in the holes of two, three or four adjacent panels.

A connecting piece 36 is provided between the vertical and horizontal panels joined so as to ensure, on the one hand a correct finish, and on the other hand a seal at the junction.

The figure 6 is an enlarged perspective view of the connection between three adjacent panels. It is observed that the spacing between the two lower holes of the plate 40 corresponds to the spacing between the connecting holes of the contiguous panels. The plate cooperates with two pins 30 which themselves cooperate with four panels (the fourth panel being absent for the sake of clarity of illustration). Each pin 30 provides alignment between two adjacent panels in a direction parallel to that of the pawn. Each pin also provides the connection between the plate 40 and the pair of adjacent panels in a direction parallel to that of the pin. It results from this construction a very easy and fast assembly while maintaining a certain simplicity and lightness to the panels.

It should be noted that the clothing described in this application can be applied to an already existing cladding, walls and ceiling called "hard" or walls of any kind.

Claims (15)

An insulating and fire-resistant panel of polygonal shape (2) comprising: a core (22) of a first insulating material; a metal sheet (10) covering the core on one side; at least two tabs (4) of a second insulating and rigid material forming at least two opposite edges of the panel; characterized in that
said tongues (4) comprise at least one hole (18) near each corner of the panel, perpendicular to the face of the tongue forming the edge of the panel and preferably near the face of the core (22) opposite to the face provided with the metal sheet (10), said hole being intended to cooperate by engagement with a peg disposed in the corresponding hole of an identical neighboring panel. Insulating and fire-resistant board according to the preceding claim, characterized in that the first insulating material of the core (22) is rigid and, preferably, the tongues (4) are glued to said core. Insulating and fire-resistant board according to the preceding claim, characterized in that the metal sheet is (10) glued to the core. An insulating and fireproof panel according to one of claims 1 and 2, characterized in that it comprises a layer (20) of the second material disposed between the core (22) and the metal sheet (10); the metal sheet (10), the layer of the second material (20) and / or the core (22) being preferably assembled by gluing. Insulating and fire-resistant board according to one of the preceding claims, characterized in that the metal sheet (10) comprises at least two folded edges on the tongues (4), each forming an edge and fixed to said tongues (4) by screwing (14), preferably near the edge on half of the edge of the panel of the side of the edge. An insulating and fire-resistant board according to one of the preceding claims, characterized in that the tabs (4) have a thickness measured in the plane of the panel of at least 10 mm and said second material is such as to allow screw in a self-tapping screw (14, 16). Insulating and fire-resistant board according to one of the preceding claims, characterized in that it comprises at least one reinforcing angle (6) made of sheet metal conforming to the edge of one of the tongues (4) and covering the face of the tongue (4) forming the edge of the panel from said edge sufficiently to cover the holes (18) intended to cooperate by engagement with pins, said bracket (6) being preferentially fixed by screwing (16) in the tongue (4) . Insulating and fireproof panel according to one of the preceding claims, characterized in that the face of at least one of the tongues (4) is provided with intumescent paint, preferably on its central zone, more preferably still between the reinforcing angle (6) and the folded edge of the metal sheet (10). Insulating and fire-resistant board according to one of the preceding claims, characterized in that the first material is based on cellular glass and / or the second material is based on magnesium silicate reinforced. Insulating and fire-resistant board according to one of the preceding claims, characterized in that it comprises four tabs (4, 12) opposite in pairs and made of the second insulating and rigid material. Insulating and fire-resistant wall comprising at least four panels (2) according to one of the preceding claims, said panels being substantially contiguously arranged in the same plane and with, for each panel, at least two edges each facing each other. a corresponding edge of another of said panels with, for at least one pair of face-to-face edges, at least one, preferably two pins (30) cooperating by engagement with the corresponding holes (18) of said pair of edges, the wall also comprising at least one plate (24, 40) comprising at least two holes and arranged astride two aligned edges of two of said panels, on either side of said pair of face-to-face edges, the holes of the plate being positioned to be traversed, each, by an ankle ( 30) cooperating with a hole (18) of one of the two aligned edges near the junction of said pair of face-to-face edges. Insulating wall and fire resistant according to the preceding claim, characterized in that the plate (24) comprises an angled portion intended to be fixed preferably by screwing to a wall or a wall opposite the faces of the panels opposite to those covered with sheet metal (10). Insulating and fire-resistant wall according to claim 11, characterized in that the plate (40) is generally flat and comprises a hole spaced from the faces of the panels opposite to those covered with the metal sheet (10), and intended to cooperate with fastening means (38) suspended from a ceiling. Insulating and fire-resistant wall according to one of Claims 11 to 13 and Claim 4, characterized in that a seal (28) is arranged between the two folded edges and facing each other of the metal sheets (10) of two contiguous panels, close to the outer surface of said sheets, the fastening screws (14) of said folded edges being spaced from the corresponding edges so as to provide the necessary space for said joint. Insulating wall and fire resistant according to the preceding claim, characterized in that the seal (28) is fire-resistant material and is of circular section inserted by insertion or is applied by extrusion.

Images