EP2602392B1 - Composite plate - Google Patents

Description

The invention relates to a composite panel, which is suitable in conjunction with similar composite panels in a slab level for creating a wall, wall paneling or wall covering or a roof or a roof covering, on at least two opposite edges mutually complementary connection means for connection to adjacent composite panels and with the same in each case with formation of a gap with a sealing against air and / or moisture labyrinth is connectable, wherein for sealing the gap at least at one edge of the composite plate, a sealing tape is arranged fixed in position.

Here, a labyrinth is understood as a constructive measure, by means of which the gap profile deflects at least in a region in the longitudinal direction of the edge. This means that the labyrinth has at least one side wall which projects through a cleavage plane which is at least approximately perpendicular to the plane of the plate. In a composite of composite panels of the type mentioned above are the same composite panels at the edge of the sealing strip. To improve airtightness, the gap can be shielded by the side wall to the outside. The sidewall is formed, for example, by a protrusion that extends from the composite panel away from the edge and the adjacent composite panel under cover of the gap overlaps the outside. The cover of the gap to the outside is usually on both outer sides of the composite plate. By these measures, a good tightness in particular against draft through the gap, a joint permeability, can already be achieved. This is usually determined by means of a Fugenprüfstandes in a test method according to DIN EN 1026 and is expressed by a so-called a-value. A composite panel is out of the EP-A-0 957 213 known.

The object of the invention is to provide a generic composite panel, by means of which in conjunction with adjacent identical composite panels improved joint permeability with an a-value less than 0.1 m ³ / (hm daPa) ^{n can be} achieved.

The stated object is achieved by the features of claim 1. Advantageous developments are described in the subclaims. The stated object is already achieved in that the sealing strip in the longitudinal direction in at least two parallel sealing strips, a first sealing strip and a second sealing strip, divided, wherein the first sealing strip of an open-cell foam and the second sealing strip are made of a closed-cell foam and the open-cell foam has an air permeability determined by means of a Frank tester 21443, which is at least twice as large as that of the closed-cell foam.

The determination of the air permeability of the foam is generally within the scope of the invention according to the test conditions according to DIN EN ISO 9237 with a test body (fully relaxed) with rectangular plate-like dimensions with larger outer surfaces each with 100 cm ² test area and a foam thickness of 10 mm and a pressure difference of 0.5 mbar between the two outer side surfaces.

This proposed measure is, as our own experiments prove, according to DIN EN 1026 determined, an increased tightness of the joint with the sealing strip between the bonded composite panels characterizing gap passing coefficient a of less than 0.1 m ³ / (hm daPa) ⁿ or possibly Also less than 0.05 m ³ / (hm daPa) ⁿ achievable. The sealing strip thus has with the sealing strip over its width on a Luftdurchlässigkeitsgradienten. This Luftdurchlässigkeitsgradient may have a respectively over the widths of the sealing strips each constant air permeability by jumping in the transition between the sealing strips.

This measure according to the invention is procedurally inexpensive to implement in the manufacture of the composite plate by the two sealing strips during manufacture, for example, under rolling from a large roll continuously on a ribbon-like Verbundplattenvorprodukt can be set, then in the usual manner, for example via a follower separator to a desired length is cut to the composite plate.

Preferably, the air permeability of the open-pored foam is greater than or equal to 100 l / m ² sec, in particular greater than / equal to 150 l / m ² sec. Furthermore, an upper limit in terms of air permeability, which is less than or equal to 600-800 l / m ² sec or less than or equal to 1,000 l / m ² sec. The air permeability of the closed cell foam can be less than / equal to 75 l / m2 sec, preferably less than / equal to 50 l / m ² sec or less / equal to 15-30 1 / m ² sec to be, in particular less than / equal to 5-10 l / m ² sec. The air permeability of the closed-cell foam can be virtually zero or under test conditions can not be measured, optionally greater than or equal to 1-2 l / m2 sec, or greater / equal to 3-5 l / m ² sec, for example greater than or equal to 10 Be 15 l / m ² sec. The aforementioned air permeability values can also have all intermediate values, in particular those which are in one-step increments exceed the above-mentioned lower limits of 100 l / m ² sec or 150 l / m ² sec to preferably 600 l / m ² sec or the abovementioned upper limits of 75 l / m ² sec, 50 l / m ² sec or 30 l / m ² sec down to 5 l / m2 sec below. Here, the term open-porosity is used interchangeably with the term open-cell or closed-cell.

The ratio of the air permeabilities of the second (closed-pore) to the first (open-pored) stripe may be ≥ 1.5-2 or ≥ 3-5, if necessary also ≥ 10-20 or ≥ 25-50. The ratio of the air permeabilities of the second (closed-cell) to the first (open-pored) strip may be ≦ 750-1000 or preferably ≦ 250-500, for example also ≦ 100-200.

Depending on the widths of the sealing strips, different sealing effects or permeability can be achieved. Since open cell foam is generally cheaper than a closed cell foam, it is advantageous in this regard to optimize the proportion of open cell foam without increasing the joint permeability. For example, the first sealing strip may be formed at least as wide as the second sealing strip. It is preferred that the first sealing strip is formed at least twice as wide as the second sealing strip. That is, the width of the first weather strip may be about 50% and 66% of the total width of the weather strip, respectively. The width of the second sealing strip can be greater than or equal to 5-10% of the total width of the sealing strip, or even greater than / equal to 5-10% of the total width of both sealing strips, if they are arranged laterally spaced on the sealing strip, but preferably the two sealing strips are not laterally spaced from each other, which is generally in the context of Invention may apply. The size of the parts ultimately depends on the total possible width of the sealing strip, whereby with a wide sealing strip the width of the open-pore foam can be greater than that of the open-pore foam with a narrow sealing strip. There may be a further gradation of the percentage of the width of the first weather strip on the total width of the weather strip in 1 percent increments of 50% to 95%. Hereby, in order to maintain an a-value smaller than or equal to 0.1 while increasing the percentage of the width of the first weather strip to the total width of the weather strip, the air impermeability of the second weather strip may be further increased. For example, to increase the air impermeability, an air-impermeable layer may be provided, in particular between the two sealing strips. For this purpose, the sealing strips can be glued to one another, for example, on their narrow longitudinal sides facing one another. For reasons of a simpler production, it is proposed that the two strips are unglued on mutually facing longitudinal sides. Increased moisture impermeability can be achieved, for example, by delayed recovery of the first and / or second sealing strip. This delayed recovery can be achieved for example by impregnation of the relevant weather strip before using the composite panel

Favorable because of in particular an improved moisture impermeability in a direction from outside to inside, the open-pored sealing strip can be arranged with respect to this direction in front of the closed-cell foam. When using the composite panel in a building can therefore be provided that the closed-cell foam building is arranged inside. As closed-cell foam can advantageously be used a PVC foam, which is not homogeneously impregnated.

The sealing tape is preferably permeable to water vapor diffusion. As a result, the gap between adjacent composite panels is permeable to water vapor diffusion as a whole. Preferably, the water vapor diffusion (WDD) resistance of the second weather strip (9.2) is greater than that of the first weather strip (9.1) upon compression of the weather strip to 40% of its fully relaxed state by a factor of 1.5 to 1,000 or 2,500. The WDD resistance of the second weather strip is preferably larger than that of the first strip by a factor of ≥ 2-3 or a factor of 10 5-10, for example, by a factor of 50-100 or 200-500 or more.

The WDD resistance of the first (open-cell) sealing strip can be ≥ 0.05 m or ≥ 0.1 m or ≥ 0.5-1 m, and can be ≤ 25-50 m or ≤ 10-15, for example in the range of 0.05-25 m, preferably in the range of 0.1-10 m, particularly preferably in the range of 0.1-5 m (resistance in each case based on the thickness of an equivalent air layer).

The comparative values of airtightness and / or the WDD resistance can each at 20 ° C and 50% rel. Humidity be determined.

The sealing tape can extend over the entire length of the edge. Both sealing strips can be at least partially abutting each other and / or at least partially overlapping arranged in mounting position in the composite panel on the longitudinal sides facing. To avoid thickening in the region of the overlap, the overlapping edges of the sealing strips may be chamfered. The overlaps can create another air barrier.

The two sealing strips may rest against each other to form a gusset or to form a Cavity overlap at least in sections. In both cases, an additional heat-insulating cavity can be created in the gasket layer.

The two mutually facing narrow sides of the two sealing strips are preferably not glued together, particularly preferably not partially, which has significant manufacturing advantages but especially in view of the comparatively small height of the sealing strips a defined and reproducible air permeability in the direction of the joint depth or through the joint at mounted Composite panels guaranteed. The sealing strip ensures or The two narrow sides of the two sealing bands facing each other are preferably in free (unmounted), in particular in composite composite panel mounted to each other, whereby a defined band arrangement is ensured in the joint. Optionally, the two narrow sides may also be (slightly) spaced from one another, for example less than 10-25% of the width of the narrower of the two sealing strips or less than 3-5% of the width thereof.

The sealing strip preferably extends over virtually the entire joint depth, so that the joint is particularly preferably completely sealed only by said sealing strip.

To determine the sealing strip with the sealing strip, the associated edge of the composite plate may have a sticky contact surface for fixing the sealing strip. Composite panels are often provided with a rigid outer skin usually made of metal, which serves as a mold for introducing hard foam. The rigid foam can be for example a PU foam. Because of the hard foam, in particular PU foam, the preferably metal outer skin does not necessarily have to be load-bearing. For continuous production of the composite panel, a clam shell can be provided be, wherein on a band-shaped first shell inside hard foam is applied, which begins to cure. In a continuous manufacturing process, following the application of the hard foam, the corresponding band-shaped second shell can be brought over the applied rigid foam and kept at a certain distance from the first shell. It can be provided that the outer skin does not form a contact surface for the sealing strip, but the same is formed by the rigid foam, which is so sticky, especially as PU foam, during its foaming and curing that the also continuously supplied sealing tape on the contact surface bonded. The received at this time with the sealing tape connection remains even after curing. Thus, the composite panel can be sandwiched with the rigid foam, such as PU foam, as a core, wherein the contact surface is an outer side of the core.

The sealing strips may be fixed in position, in particular adhesively bonded, on a common thin flexible carrier, such as fleece, paper or film, in particular plastic film. Thus, the carrier can be fixed with the positionally fixed sealing strips in a process step on the contact surface of the composite plate, in particular glued. The sealing strip is therefore preferably rollable.

Both weather strips or one of the weather strips may each be impregnated to a delayed recovery. In particular, the open-pore and / or the closed-pored sealing strip is not impregnated for delayed recovery. The open-pore and / or the closed-pore weather strip can - each independently - be provided with a fire protection impregnation and / or impregnation to improve the driving rain, optionally independently with only one or both of them. Optionally, the open-pore and / or the closed-pored sealing strip not impregnated.

The open-pored and / or closed-pore sealing strips may independently of one another have a height in the range of 1-20 mm, preferably in the range of 2-15 mm or in the range of 3-15 mm in the free, unpressurized state, e.g. in the range of 4-12 mm. In the unpressurized state, both weather strips may have the same height, possibly a height difference of ≤30-50% or ≤10-20% relative to each other, based on the larger height weather strip.

Preferably, the sealing strips are formed to have a reduced thickness compared to their thickness in an unloaded state in the sealing layer in which they rest in the connecting position of the composite plate with an adjacent composite layer sealingly against this adjacent composite plate.

The composite plate can be connected via a plug connection, such as tongue and groove connection, with the adjacent composite plate. Here, the groove may have a U-profile with two externally arranged on the composite plate legs which cover the gap on the outside on both sides in the connected composite plates to form the labyrinth. Advantageously, slits can be provided in the spring towards the groove, which make it possible for the spring to be snugly clamped in the groove while partially closing the slots, so that the gap width at the legs at least in sections approaches zero. This in turn can advantageously reduce the joint passing coefficient a.

The sealing strip may be arranged expediently preassembled in the groove. The may have a groove bottom on which the sealing strip may preferably be determined by adaptation to the profile of the groove bottom. The groove may for example have a profile with preferably straight side edges, as a V-shaped, U-shaped or Z-shaped profile exhibit.

The mutually opposite and mutually complementary edges of the composite panel may each have an L-shaped profile with a projecting at least approximately in the plane plane projection for covering the outside of the gap in the connecting position of the composite plate with a respective edge associated composite plate. Here, the projection of the one edge may be disposed on the one outer side of the composite plate and that of the other edge on the other outer side thereof. Thus, two identical composite panels in the connecting position to form a Z-shaped gap can be arranged mutually overlapping each with its projection. In this case, under the action of force, the gap in height of the projections with respect to its width at least partially go almost to zero. Preferably, the edge profiles each have an at least approximately perpendicular to the composite plane arranged central portion for fixing the sealing strip.

In the assembled state, ie in assembled composite panels, the sealing tape can be compressed to 25-55% of its original height at fully relaxed state, preferably 30-50% or 35-45%.

The composite panels may have a height of ≥ 4-6 m or ≥ 8-10 m, for example, to 10-15 m or more. The sealing strip extends here and generally in the context of the invention over virtually the entire height of the composite panels (possibly up to any connection areas, which usually make up ≤ 2-5% or ≤ 0.5-1% of the height of the composite panel The high altitude so considerable forces are required to compress the sealing tape for sealing and the composite panels intended to position each other, which allow the composite panels according to the invention to a particular extent, to provide water vapor permeable joints.

The interconnected to produce the wall structure interconnected or composite panels are preferably identical to each other. The wall construction can represent the entire or only part of a building wall construction. Preferably, the wall structure is part of a building exterior wall, possibly also not limited thereto.

Fig. 1

eine perspektivische Ansicht einer ersten Ausführungsform der Verbundplatte,

Fig. 2

eine Draufsicht zwei randseitig miteinander verbundene Verbundplatten in der ersten Ausführungsform gemäß Figur 1,

Fig. 3

eine perspektivische Ansicht einer zweiten Ausführungsform der Verbundplatte,

Fig. 4

eine Draufsicht zwei randseitig miteinander verbundene Verbundplatten in der zweiten Ausführungsform gemäß Figur 3 und

Fig. 5

eine Seitenansicht auf zwei verbindungsbereite Verbundplatten einer dritte Ausführungsform.

The present invention will be explained in more detail below with reference to three embodiments of the composite panel shown in a drawing. In the drawing show:

Fig. 1

a perspective view of a first embodiment of the composite plate,

Fig. 2

a plan view of two peripherally interconnected composite panels in the first embodiment according to FIG. 1 .

Fig. 3

a perspective view of a second embodiment of the composite plate,

Fig. 4

a plan view of two peripherally interconnected composite panels in accordance with the second embodiment FIG. 3 and

Fig. 5

a side view of two compound composite panels of a third embodiment.

In the FIGS. 1 and 3 In each case, a perspective view of an embodiment of a composite panel 1 with larger, outwardly facing in the composite V, parallel to or arranged in a plate plane P larger side surfaces 2 and peripheral edges 3 is shown. Here are two mutually opposite edges 3 of the composite plate 1 mutually complementary connection means 4 are provided. In the Figures 2 and 4 is in each case a plan view of two edge-side interconnected composite panels 1 in one according to the first view FIG. 1 or in a second embodiment according to FIG. 3 , in each case as a section of the composite V of the same composite panels 1, shown. FIG. 5 branches in a side view two ready for connection composite panels of a third embodiment. The composite panel 1 is suitable in the composite V with similar composite panels 1 in panel level E for creating a wall, wall paneling or wall covering or a roof or a roof covering. The plate plane E is in the Figures 1-5 equal to the picture plane.

As in FIGS. 1 and 3 can be seen, a sealing strip 6 is fixed to a contact surface 5 of one of the edges 3 of the composite panel 1, which extends in a longitudinal direction 1 perpendicular to the plane of the plate E over the entire edge 3. The contact surface 5 extends here perpendicular to the plate plane E and in the longitudinal direction 1. In the in the Figures 2 and 4 shown connection position are the composite plates 1 to form a gap 7 with a particular here against air-tight labyrinth 8 to each other. In the gap 7, the sealing strip 6 is arranged, which rests sealingly against the edge 3 without sealing tape 6.

The sealing strip 6 has two parallel sealing strips running in the longitudinal direction 1, a first sealing strip 9.1 and a second sealing strip 9.2, wherein the first sealing strip 9.1 is made of an open-pore foam and the second sealing strip 9.2 is made of a closed-cell foam. (The open porosity of the open-pored foam is indicated graphically in the figures by circular characters). The open-cell foam has an air permeability, determined by means of a Frank-tester, the ² sec is three times as big as the air permeability determined by means of the Frank tester of 50 l / m ² sec of closed-pore foam, here with 150 l / m. Furthermore, the first sealing strip 9.1 is wider than the second sealing strip 9.2.

Thanks to these measures, a joint passing coefficient a of less than 0.1 m ³ / (hm daPa) ⁿ determined in accordance with DIN EN 1026 is achieved. In the Figures 2 and 4 an outer side A and an inner side I noted to indicate hereby at a water vapor diffusion gradient from outside A to inside I a favorable especially against moisture arrangement of the sealing strips 9.1, 9.2, wherein conveniently the open-pore foam to the outside A and the closed-pore foam oriented inside I is arranged.

The WDD resistance of the second weather strip (9.2) when compression of the sealing strip to 40% of its height in fully relaxed state is here by a factor of 30 greater than that of the first weather strip (9.1). The WDD resistance of the first sealing strip here is 1 m.

The two sealing strips have the same height in the non-pressurized state. The two sealing strips are not adhesive at their mutually facing narrow sides or not connected to one another with an adhesive. The facing narrow sides of the two sealing strips abut each other.

The composite panel 1 is made here in the usual sandwich construction of non-supporting metal outer shells, which are so foamed with PU foam core as an outer side of the PU foam forms the contact surface 5. The surface of the PU foam remains SHORT after curing of the PU foam still so sticky, so that the sealing tape 6 can be glued without additional adhesive on the contact surface 5. During foaming, the PU mixture is very sticky. The received at this time with the sealing strip 6 connection remains after curing. The two sealing strips 9.1, 9.2 are on one common carrier 10, here from a nonwoven, glued, wherein the two sealing strips 9.1, 9.2 adjoin each other on the narrow side, without being glued there. The received during this time of foaming with the sealing strip 6 and the carrier 10 connection remains even after the curing of the Pu-foam exist.

Both sealing strips 9.1, 9.2 are here formed without provision, ie they have in the connecting position of the composite plate 1 with the adjacent composite plate 1 'has a reduced thickness compared to its thickness in an unloaded state ( FIGS. 1 and 3 ) on.

The composite panel 1 is according to its first embodiment Figures 1 and 2 designed for a connector 11 in the form of a tongue and groove connection with groove 12 and spring 13 as a connection means 4. In this case, an edge 3 of the composite plate 1, the groove 12 formed as a contact surface 5 groove bottom 12.1 and legs 12.2 and this opposite edge 3, the spring 13. The sealing strip 6 extends over the entire width of the groove bottom 12.1. The first sealing strip 9.1 of the sealing strip 6 is here twice as wide as the second sealing strip 9.2 formed.

Groove 12 and spring 13 engage to form a U-shaped gap 7 (FIG. FIG. 2 ) into one another so that the sealing strip 6 sealingly engages the front side of the spring 13. Furthermore, the spring 13 is on the inside under slight bias sealingly against the legs 12.2. For this purpose, end-side slots 14 are provided in the spring 13, which allow a slight transverse contraction of the spring 13.

In the second embodiment of the composite panel 1, both edges have an L-shaped profile with a longitudinal projection 1 extending in the lateral projection 15 and a arranged perpendicular to the longitudinal direction end face 16 as a connecting means 4, wherein on the end face 16 at one of the edges 3 of the composite plate 1, the sealing strip 6 is arranged. Here, the sealing strip 6 extends over the entire width of the end face 16. The first sealing strip 9.1 is here three times as wide as the second sealing strip 9.2 formed. The two projections 15 of the two edges 3 are mutually arranged with respect to the larger side surfaces 2 of the composite plate 1. For flush completion of the composite V is at the edges 3 each have a recess 17 for receiving the projection 15 is provided. As a result, the composite plates 1 joined to one another at the edges 3 rest against one another in the connecting position, forming a Z-shaped gap 7.

In FIG. 5 are shown in a schematic side view of two composite panels 1 in a third embodiment, which are still here unconnected and spaced apart from each other and the composite here are horizontally plugged into each other. For this purpose, the two composite panels 1 with their mutually complementary edges 6 to each other. At the right edge 3 here is a projection 15 and at the left edge here 3 a projection 15 adapted recess 17 for receiving the projection 15 is provided.

In contrast to the two other embodiments of the composite panel 1, the edges 3 here have a trapezoidal profile. At the here left composite plates 1, an arcuate cover 18 is provided, which engages over a correspondingly formed projection 19 on the here right composite plate 1 to form a substantially trapezoidal gap in the connection position, not shown here. Such a profile is particularly suitable for a roof cover.

To seal the cover 18 with respect to the projection 19, On the inside of the cover 18, a further sealing strip 20 is provided, which is designed here as a precompressed sealing strip 20. This sealing strip 20 is designed to be vapor-permeable, so that, after the plug-in connection of the two composite panels 1, water vapor from the gap region between the two sealing strips 6, 20 can diffuse outward through the further sealing tape 20. In the embodiment of the composite panel 1 shown here, this further sealing tape 20 according to the IFBS guidelines 4.02 Building physics "joint tightness in lightweight steel construction" eg according to Illac 30/2 vapor diffusion open design.

The sealing tape is compressed in the installed position to 40% of its original volume, with a composite panel height of 10 m.

LIST OF REFERENCE NUMBERS

1

sandwich panel

2

side surface

3

edge

4

connecting means

5

contact surface

6

sealing tape

7

gap

8th

labyrinth

9.1

first sealing strip

9.2

second sealing strip

10

carrier

11

connector

12

groove

12.1

groove base

12.2

leg

13

feather

14

slot

15

head Start

16

front

17

recess

18

cover

19

head Start

20

sealing tape

A

Outside

e

board plane

I

Inside

V

composite

l

longitudinal direction

Claims (15)

1. Composite panel (1) which, combined (V) with identical composite panels (1) in a panel plane (E), is suitable for creating a wall, wall filling or wall covering or a ceiling or a ceiling covering respectively, has on at least two mutually opposite edges (3) mutually complementary connection means (4) for connecting to adjacent composite panels (1') and can be connected thereto in each case so as to form a gap (7) with a labyrinth (8) that seals against air and/or moisture, wherein a sealing tape (6) is arranged in a fixed position at least on one edge (3) of the composite panel (1) in order to seal the gap (7), characterized in that the sealing tape (6) is divided in the longitudinal direction (I) into at least two parallel sealing strips (9), a first sealing strip (9.1) and a second sealing strip (9.2), wherein the first sealing strip (9.1) is made of an open-pore foam and the second sealing strip (9.2) is made of a closed-pore foam and the open-pore foam has an air permeability, determined by means of a Frank testing device, that is at least twice as great as that of the closed-pore foam.
2. Composite panel (1) according to claim 1, characterized in that the air permeability of the open-pore foam is greater than/equal to 100 l/m² sec and preferably less than/equal to 600 l/m² sec.
3. Composite panel (1) according to claim 1 or 2, characterized in that the air permeability of the closed-pore foam is less than/equal to 75 l/m² sec.
4. Composite panel (1) according to any one of claims 1 to 3, characterized in that the first sealing strip (9.1) is at least as wide as the second sealing strip (9.2).
5. Composite panel (1) according to any one of claims 1 to 4, characterized in that the water vapour diffusion resistance of the second sealing strip (9.2) when the sealing tape is compressed to 40% of its height in the fully relaxed state is greater than that of the first sealing strip (9.1) by a factor of 1.5 to 1000.
6. Composite panel (1) according to any one of claims 1 to 5, characterized in that the sealing strips (9.1, 9.2) are arranged such as at least in sections to bear against one another at facing longitudinal sides and/or such as at least in sections to overlap one another relative to a transverse direction perpendicular to the panel plane (E).
7. Composite panel (1) according to any one of claims 1 to 6, characterized in that the sealing strips (9.1, 9.2) bear against one another to form a gusset or at least in sections overlap one another to form a cavity.
8. Composite panel (1) according to any one of claims 1 to 7, characterized in that the edge (3) of the composite panel (1) having the sealing tape (6) has during the production process a tacky bearing face (5) for the attachment of the sealing tape (6).
9. Composite panel (1) according to claim 8, characterized in that it is formed in a sandwich construction with a hard foam as the core, wherein the bearing face (5) is an outer side of the core.
10. Composite panel (1) according to any one of claims 1 to 9, characterized in that the sealing strips (9.1, 9.2) are fixed in position on a common, thin, flexible carrier (10) such as nonwoven, paper or film.
11. Composite panel (1) according to any one of claims 1 to 10, characterized in that at least one of the sealing strips (9.1, 9.2), in the sealing position in which it bears sealingly against an adjacent composite panel (1') when the composite panel (1) is connected to said adjacent composite panel (1'), has a reduced thickness in comparison to its thickness in an unloaded state.
12. Composite panel (1) according to any one of claims 1 to 11, characterized in that the sealing strips (9.1, 9.2) are non-bonded on mutually facing longitudinal sides.
13. Composite panel (1) according to any one of claims 1 to 12, characterized in that the composite panel (1) can be connected to an adjacent composite panel (1') via a plug-in connection (10), thereby forming a gap, or by bearing against an adjacent composite panel (1') and thereby forming a Z-shaped gap (7) between the composite panels (1).
14. Composite panel (1) according to claim 13, characterized in that the gap (7) has in each case, relative to the profile course, a middle section which is arranged perpendicular to the composite plane (E) and which is intended for the attachment of the sealing tape (6).
15. Wall structure produced from at least two or more composite panels assembled together according to any one of claims 1 to 14, with a sealing tape compressed in each case between adjacent composite panels.

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