A COMPOSITE PANEL AND A METHOD FOR MANUFACTURING A COMPOSITE PANEL

Description

BACKGROUND

[0001] The invention relates to a sandwich-structured composite panel, comprising a first face skin of sheet metal and a second face skin of sheet metal.

[0002] US 4 104 840 A discloses a sandwich-structured composite panel, comprising a first and a second face skins of sheet metal and a core made of thermally insulating material. An attachment edge comprising an attachment profile formed from the sheet metal of at least one of said skins, and shaped for a tongue-and-groove attachment, is provided at the edge of the composite panel for attaching the composite panel to another composite panel. A protective layer of hydrophobic material is arranged on the outer surface of the sheet metal.

[0003] The invention further relates to a method for manufacturing the composite panel.

[0004] It is known to use steel composite panels in buildings and constructions as a façade cladding panel element, a partition wall panel element, or a ceiling panel element. A phenomenon known as crevice corrosion may be problematic for such steel composite panels. The crevice corrosion may take place in confined areas where water solution can penetrate but it cannot change at the same speed as other areas of the metal surface. For instance, seams and joints between composite panels attached to each other may create said confined areas hospitable for crevice corrosion.

[0005] Especially weathering steels, such as COR-TEN steel, may be very sensitive to crevice corrosion. Said weathering steels are group of steel alloys which were developed to eliminate the need for painting and form a stable rust-like appearance after several years' exposure to weather.

BRIEF DESCRIPTION

[0006] Viewed from a first aspect, there can be provided a sandwich-structured composite panel, comprising

• a first face skin of sheet metal,
• a second face skin of sheet metal, and
• a core made of thermally insulating material arranged between the first face skin and the second face skin, the first and second face skins being attached to the core,
• an attachment edge at the edge of the composite panel for attaching the composite panel to another composite panel,
• the attachment edge comprising
  • an attachment profile being formed from the sheet metal of at least one of said skins and shaped for a tongue-and-groove attachment,
  • the sandwich-structured composite panel further comprising
  • a protective layer of hydrophobic material arranged on the outer surface of a portion of the sheet metal in the attachment profile , for inhibiting or attenuating galvanic contacts or couplings between composite panels attached to each other, wherein the face skins are without said protective layer.

[0007] Thereby the composite panel may provide inhibited or attenuated galvanic contacts or couplings between composite panels attached to each other. Thus, a final panel structure having good resistance against crevice corrosion at composite panel attachment joints may be achieved.

[0008] Viewed from a further aspect, the invention further provides a method for manufacturing the composite panel as claimed in any one of the preceding claims, the method comprising, simultaneously or in any order, the steps of:

• providing a sheet metal,
• forming the attachment edge and the attachment profile to the sheet metal, thus providing the first face skin and the second face skin,
• attaching the first face skin and the second face skin to a core made of thermally insulating material,
• providing the protective layer of hydrophobic material in the attachment profile, and
• leaving the face skins without said protective layer.

[0009] Thereby a method for manufacturing composite panels providing metallic face skin(s) but still having good resistance against crevice corrosion at composite panel attachment joints in a final structure may be achieved.

[0010] The arrangement and the method are characterised by what is stated in the independent claims.

[0011] Advantageously, the protective layer is a polymer or polymer composite film. An advantage is that a protective layer that is durable may be achieved.

[0012] Advantageously, the protective layer is a paint layer. An advantage is that a very thin protective layer may be achieved.

[0013] In particular, the attachment profile comprises a tongue-profile, and wherein the protective layer is arranged on surface of said tongue-profile. An advantage is that the protective layer is easy to arrange on the tongue-profile.

[0014] In particular, the attachment profile comprises a groove-profile, and wherein the protective layer is arranged on surface of said groove-profile. An advantage is that the protective layer is well-protected in the groove-profile against mechanical damages.

[0015] Optionally, the attachment edge comprises at least two attachment profiles. An advantage is that a robust attachment of panels may be achieved.

[0016] Optionally, a first attachment profile is formed from the first face skin and a second attachment profile is formed from the second face skin. An advantage is that the attachment edge may be provided with two attachment profiles in a simple way.

[0017] In particular, the attachment edge comprises a section of the core between the first and second attachment profiles. An advantage is that thermal insulation property may be extended to the attachment edge.

[0018] In particular, the composite panel comprises attachment edges at opposite edges thereof, such that said attachment edges are counterparts to each other. An advantage is at least two of said panels may be attached to each other.

[0019] In particular, the material of the face skin is of naturally passivating metal. An advantage is that the need for painting or another surface finishing may be eliminated.

[0020] In particular, the core is a board of foamed polyurethane. An advantage is that good thermal insulation properties may be achieved.

[0021] Optionally, the core is a polyisocyanurate (PIR) insulation board. An advantage is that good thermal insulation properties with improved flame-retardant properties may be achieved.

[0022] Optionally, the core is a mineral wool element. An advantage is that a composite panel having good flame-retardant properties may be achieved.

[0023] Optionally, the attachment edge is arranged on the upper or the lower edge of the panel. An advantage is that risk of corrosion in horizontal joints of a panel structure may be reduced.

[0024] Optionally, the composite panel comprises an airtight seal component arranged in the groove-profile. An advantage is that transport of air and moisture through the joint of composite panels may be prevented, and thus life-time of the panels extended.

[0025] In particular, the method comprises: arranging a temporary protective layer of hydrophobic material on the surface of the sheet metal, forming the outer faces of the first face skin and the second face skin from the surface of sheet metal comprising the temporary protective layer, and following assembling the composite panel: removing the temporary protective layer on the outer faces of at least one of the skins, but leaving the temporary protective layer on the attachment profile, thus forming the protective layer in the attachment profile. An advantage is that the temporary protective layer that protects the skins during manufacturing of the composite panels is utilized as the protective layer, and thus material costs of the composite panels may be reduced.

[0026] Optionally, the method comprises: providing the protective layer in the attachment profile by painting. An advantage is that painting is simple way to provide layers on a substrate.

[0027] Optionally, the method comprises: arranging a temporary protective layer on the surface of the sheet metal, forming the outer faces of the first face skin and the second face skin from the surface of sheet metal comprising the temporary protective layer, removing the temporary protective layer from the attachment profile, and providing the protective layer in the attachment profile by painting. An advantage is that the temporary protective layer serves as a masking element for painting, thus a very precise painting may be realized.

BRIEF DESCRIPTION OF FIGURES

[0028] Some embodiments illustrating the present disclosure are described in more detail in the attached drawings, in which

Figure 1 is a schematic side view of a composite panel in partial cross-section, and

Figures 2a - 2d are schematic views of method for manufacturing a composite panel.

[0029] In the figures, some embodiments are shown simplified for the sake of clarity. Similar parts are marked with the same reference numbers in the figures.

DETAILED DESCRIPTION

[0030] Figure 1 is a schematic side view of a composite panel in partial cross-section.

[0031] The composite panel 1 may be e.g. a façade cladding panel element, or a partition wall panel element, or a ceiling panel element.

[0032] The composite panel 1 has a sandwich-structure, comprising a first face skin 3 of sheet metal, a second face skin 4 of sheet metal, and a core 5 made of thermally insulating material arranged between the first face skin and the second face skin. The first and second face skins 3, 4 are attached to the core 5.

[0033] Advantageously, the material of the face skin 3, 4 is naturally passivating metal, such as weathering steel or COR-TEN steel.

[0034] In particular, the core 5 is a board of foamed polyurethane. More in particular, the core 5 is a polyisocyanurate (PIR) insulation board. In still another embodiment, the core 5 is a wool element, such as a mineral wool element.

[0035] An attachment edge 2 is arranged at the edge of the composite panel 1 for attaching the composite panel to another composite panel. According to an aspect of the invention, the attachment edge 2 comprises an attachment profile 6 being formed from the sheet metal of first or second face skin 3, 4, or of both first and second skins. The attachment edge 2 is shaped such that the composite panels may be attached by a tongue-and-groove attachment to each other.

[0036] According to the invention, the composite panel 1 comprises attachment edges 2 at opposite edges thereof, such that said attachment edges 2 are counterparts to each other.

[0037] The composite panel 1 comprises further a protective layer 7 made of hydrophobic material and arranged on the outer surface of a portion of the sheet metal in the attachment profile 6. Optionally, the protective layer 7 is a polymer or polymer composite film, such as polyethylene (e.g. high-density polyethylene HDPE) or polypropylene film. In an embodiment, the protective layer comprises polyethylene terephthalate PET, having good ultraviolet resistance, low water absorption and low electrical conductivity. Optionally, the protective layer comprises polyethylene naphthalene PEN, having better ultraviolet resistance, lower water absorption and lower electrical conductivity. Optionally, the protective layer comprises polyimide PI, having still better ultraviolet resistance, lower water absorption and lower electrical conductivity. The protective layer 7 comprising polymer film may be a monolayered film or multi-layer film.

[0038] Optionally, the protective layer 7 is a paint layer.

[0039] In particular, the attachment profile 6 comprises a tongue-profile 8, and the protective layer 7 is arranged on surface of said tongue-profile. Optionally, the attachment profile 6 comprises a groove-profile 9, and the protective layer 7 is arranged on surface of said groove-profile.

[0040] In particular, the attachment edge 2 comprises at least two attachment profiles 6. In particular (e.g. as shown in Figures), the attachment edge 2 comprises two parallel tongue-profiles 8, or two parallel groove-profiles 9. In particular, the attachment edge 2 comprises one tongue-profile and one groove-profile arranged parallel with the tongue-profile. More in particular, a first of said attachment profiles 6 may be formed from the first face skin 3, whereas the second attachment profile is formed from the second face skin 4.

[0041] In particular, attachment edge 2 comprises an airtight seal component 10 extending preferably all over the length of the attachment edge 2. The seal component 10 may be attached e.g. in the groove-profile 9, and as the tongue-profile is arranged in said groove-profile, the seal component 10 gets squeezed between the profiles.

[0042] In particular, the attachment edge 2 comprises a section of the core 5 between the first and second attachment profiles 6.

[0043] The attachment edge 2 may be arranged on the upper or the lower edge of the panel. Thus, the attachment edges 2 connected to each other may establish a horizontal seam of a panel structure. However, optionally, the attachment edge 2 is arranged another way. For example, the attachment edge 2 may be arranged on a side edge of the panel, and thus form a part of a vertical seam of a panel structure.

[0044] In Figure 1, attachment means 12 attaching the composite panels 1 to a support structure 13 are screws. Optionally, another type of attachment means may be used. For instance, the composite panel is glued to the support structure.

[0045] The support structure 13 may be basically any structure of a building or a construction being suitable for the attachment of the composite panels.

[0046] Figures 2a - 2d are schematic views of method for manufacturing a composite panel. In the embodiment of the method shown in the Figures, it is first provided 100 a sheet metal 14. As shown in Figure 2a, the sheet metal is provided from a roll of metal sheet 15. However, the sheet metal may also be provided in plate-form.

[0047] A temporary protective layer 11 of hydrophobic material is arranged 101 on the surface of the sheet metal 14.

[0048] Figure 2b is showing forming 102 the attachment edges 2 and the attachment profile 6 to the sheet metal 14, thus providing the first face skin and the second face skin.

[0049] The temporary protective layer 11 lies on outer faces of the first face skin and the second face skin. The forming 102 may be realized e.g. by roll-forming or cold forming methods.

[0050] Figure 2b is showing attaching 103 the first face skin 3 and the second face skin to a core made of thermally insulating material, by e.g. gluing. Thus, the composite panel 1 has been assembled, shown in Figure 2c.

[0051] Following assembling the composite panel 1, the temporary protective layer 11 is removed 105 on the outer face of at least one of the skins 3, 4, but it is left 106 on the attachment profile 6, thus forming 104 the protective layer 7 in the attachment profile 6. In an embodiment, the temporary protective layer 11 is removed 105 on the outer face of both of the skins 3, 4, but it is left 106 on the attachment profile 6. In an embodiment, in the removing step it is first made a cutting or slit on an appropriate line in the temporary protective layer 11, and then the sections to be removed are stripped or pulled away from the outer faces of the skin 3, 4.

[0052] It is to be noted that in Figure 2d, the upper face skin 3 is shown with section of the temporary protective layer 11 to be removed (dashed line), whereas the lower face skin 4 is shown said section already removed.

[0053] In particular (e.g. as the shown embodiment), the protective layer 7 is arranged only to one attachment edge of the composite panel. The protective layer 7 can be arranged to both or all the attachment edges of the composite panel.

[0054] Optionally, the protective layer 7 is provided as a strip of polymer or polymer composite film that is attached to the attachment profile 6.

[0055] Optionally, the protective layer 7 is applied in the attachment profile 6 by painting. Advantageously, it is possible to utilize the temporary protective layer 11 as a painting masking, i.e. the temporary protective layer 11 is removed on sections of the attachment profile 6 to be painted, and then applying paint on exposed sections of the attachment profile 6.

[0056] The invention is not limited solely to the embodiments described above, but instead variations are possible within the claims below.

[0057] The drawings and the related description are only intended to illustrate the idea of the invention. The invention may vary in detail within the scope defined in the following claims.

REFERENCE SYMBOLS

[0058] 

1

composite panel

2

attachment edge

3

first face skin

4

second face skin

5

core

6

attachment profile

7

protective layer

8

tongue-profile

9

groove-profile

10

seal component

11

temporary protective layer

12

attachment means

13

support structure

14

sheet metal

15

roll of metal sheet

100 - 106

method steps

Claims

1. A sandwich-structured composite panel (1), comprising

- a first face skin (3) of sheet metal,

- a second face skin (4) of sheet metal, and

- a core (5) made of thermally insulating material arranged between the first face skin and the second face skin, the first and second face skins being attached to the core,

- an attachment edge (2) at the edge of the composite panel (1) for attaching the composite panel to another composite panel (1),

- the attachment edge (2) comprising

- an attachment profile (6) being formed from the sheet metal of at least one of said skins (3, 4) and shaped for a tongue-and-groove attachment,

- the sandwich-structured composite panel (1) further comprising

- a protective layer (7) of hydrophobic material arranged on the outer surface of a portion of the sheet metal in the attachment profile (6), for inhibiting or attenuating galvanic contacts or couplings between composite panels attached to each other, wherein

- the face skins (3, 4) are without said protective layer (7) .

2. The composite panel as claimed in claim 1, wherein the protective layer (7) is a polymer or polymer composite film.

3. The composite panel as claimed in claim 1, wherein the protective layer (7) is a paint layer.

4. The composite panel as claimed in any of the preceding claims, wherein the attachment profile (6) comprises a tongue-profile (8), and wherein the protective layer (7) is arranged on surface of said tongue-profile.

5. The composite panel as claimed in any of the preceding claims, wherein the attachment profile (6) comprises a groove-profile (9), and wherein the protective layer (7) is arranged on surface of said groove-profile.

6. The composite panel as claimed in any of the preceding claims, wherein the attachment edge (2) comprises at least two attachment profiles (6).

7. The composite panel as claimed in claim 6, wherein a first attachment profile (6) is formed from the first face skin (3) and a second attachment profile (6) is formed from the second face skin (4).

8. The composite panel as claimed in claim 7, wherein the attachment edge (2) comprises a section of the core (5) between the first and second attachment profiles (6).

9. The composite panel as claimed in any of the preceding claims, comprising attachment edges (2) at opposite edges thereof, such that said attachment edges (2) are counterparts to each other.

10. The composite panel as claimed in any of the preceding claims, wherein the material of the face skin (3, 4) is of naturally passivating metal.

11. The composite panel as claimed in any one of the claims 5 - 10, comprising an airtight seal component (10) arranged in the groove-profile (9).

12. A method for manufacturing the composite panel as claimed in any one of the preceding claims, the method comprising the steps of:

- providing (100) a sheet metal (14),

- forming (102) an attachment edge (2) and an

attachment profile (6) to the sheet metal (14), thus providing first face skin (3) and a second face skin (4),

- attaching (103) the first face skin (3) and the second face skin (4) to a core (5) made of thermally insulating material,

- providing (104) a protective layer (7)

of hydrophobic material in the attachment profile (6), and

- leaving (105) the face skins (3, 4) without said protective layer (7).

13. The method as claimed in claim 12, comprising:

- arranging (101) a temporary protective layer (11) of hydrophobic material on the surface of the sheet metal (14),

- forming the outer faces of the first face skin (3) and the second face skin (4) from the surface of sheet metal (14) comprising the temporary protective layer (11), and

- following assembling the composite panel (1):

- removing (105) the temporary protective layer (11) on at least one of the outer faces of the skins, but

- leaving (106) the temporary protective layer (11) on the attachment profile (6), thus forming the protective layer (7) in the attachment profile (6).

14. The method as claimed in claim 12, comprising:

- providing (104) the protective layer (7) in the attachment profile (6) by painting.

15. The method as claimed in claim 12, comprising:

- arranging (100) a temporary protective layer (11) on the surface of the sheet metal (14),

- forming the outer faces of the first face skin (3) and the second face skin (4) from the surface of sheet metal (14) comprising the temporary protective layer (11),

- removing the temporary protective layer (11) from the attachment profile (6), and

- providing (104) the protective layer (7) in the attachment profile (6) by painting.

Ansprüche

1. Sandwichartig strukturierte Verbundplatte (1), aufweisend

- eine erste Deckhaut (3) aus Blech,

- eine zweite Deckhaut (4) aus Blech, und

- einen Kern (5) aus wärmeisolierendem Material, der zwischen der ersten Deckhaut und der zweiten Deckhaut angeordnet ist, wobei die erste und die zweite Deckhaut an dem Kern befestigt sind,

- eine Befestigungskante (2) am Rand der Verbundplatte (1) zur Anbringung der Verbundplatte an einer anderen Verbundplatte (1)

- wobei die Befestigungskante (2) aufweist

- ein Befestigungsprofil (6), das aus dem Blech wenigstens einer der Deckhäute (3, 4) gebildet ist und für eine Nut-/Federbefestigung gestaltet ist,

- wobei die sandwichartig strukturierte Verbundplatte (1) ferner aufweist:

- eine Schutzschicht (7) aus hydrophobem Material, die an der äußeren Oberfläche eines Teils des Blechs in dem Befestigungsprofil (6) angeordnet ist, um galvanische Kontakte oder Kopplungen zwischen aneinander angebrachten Verbundplatten zu verhindern oder zu verringern, wobei

- die Deckhäute (3, 4) ohne die Schutzschicht (7) sind.

2. Verbundplatte nach Anspruch 1, wobei die Schutzschicht (7) ein Polymer oder eine Polymer-Verbundfolie ist.

3. Verbundplatte nach Anspruch 1, wobei die Schutzschicht (7) eine Anstrichschicht ist.

4. Verbundplatte nach einem der vorstehenden Ansprüche, wobei das Befestigungsprofil (6) ein Federprofil (8) aufweist und wobei die Schutzschicht (7) an einer Oberfläche des Federprofils angeordnet ist.

5. Verbundplatte nach einem der vorstehenden Ansprüche, wobei das Befestigungsprofil (6) ein Nutprofil (9) aufweist und wobei die Schutzschicht (7) an einer Oberfläche des Nutprofils angeordnet ist.

6. Verbundplatte nach einem der vorstehenden Ansprüche, wobei die Befestigungskante (2) wenigstens zwei Befestigungsprofile (6) aufweist.

7. Verbundplatte nach Anspruch 6, wobei ein erstes Befestigungsprofil (6) aus der ersten Deckhaut (3) gebildet ist und ein zweites Befestigungsprofil (6) aus der zweiten Deckhaut (4) gebildet ist.

8. Verbundplatte nach Anspruch 7, wobei die Befestigungskante (2) einen Abschnitt des Kerns (5) zwischen dem ersten und zweiten Befestigungsprofil (6) aufweist.

9. Verbundplatte nach einem der vorstehenden Ansprüche, mit Befestigungskanten (2) an deren gegenüberliegenden Rändern, derart, dass die Befestigungskanten (2) Pendants zueinander sind.

10. Verbundplatte nach einem der vorstehenden Ansprüche, wobei das Material für die Deckhaut (3, 4) aus natürlich passivierendem Metall ist.

11. Verbundplatte nach einem der Ansprüche 5 - 10, mit einer luftundurchlässigen Dichtungskomponente (10), die in dem Nutprofil (9) angeordnet ist.

12. Verfahren zur Herstellung der Verbundplatte nach einem der vorstehenden Ansprüche, wobei das Verfahren die Schritte aufweist:

- Bereitstellen (100) eines Blechs (14),

- Formen (102) einer Befestigungskante (2) und eines Befestigungsprofils (6) an das Blech (14), um dadurch eine erste Deckhaut (3) und eine zweite Deckhaut (4) vorzusehen,

- Befestigen (103) der ersten Deckhaut (3) und der zweiten Deckhaut (4) an einem Kern (5) aus wärmeisolierendem Material,

- Vorsehen (104) einer Schutzschicht (7) aus hydrophobem Material in dem Befestigungsprofil (6), und

- Belassen (105) der Deckhäute (3, 4) ohne die Schutzschicht (7).

13. Verfahren nach Anspruch 12, aufweisend:

- Anordnen (101) einer temporären Schutzschicht (11) aus hydrophobem Material an der Oberfläche des Blechs (14),

- Formen der äußeren Flächen der ersten Deckhaut (3) und der zweiten Deckhaut (4) aus der Oberfläche des Blechs (14), umfassend die temporäre Schutzschicht (11) und

- darauffolgendes Zusammenbauen der Verbundplatte (1):

- Entfernen (105) der temporären Schutzschicht (11) an wenigstens einer der äußeren Flächen der Häute, aber

- Belassen (106) der temporären Schutzschicht (11) an dem Befestigungsprofil (6) und dadurch Ausbilden der Schutzschicht (7) in dem Befestigungsprofil (6).

14. Verfahren nach Anspruch 12, aufweisend:

- Vorsehen (104) der Schutzschicht (7) in dem Befestigungsprofil (6) durch Anstreichen.

15. Verfahren nach Anspruch 12, aufweisend:

- Anordnen (100) einer temporären Schutzschicht (11) an der Oberfläche des Blechs (14),

- Formen der äußeren Flächen der ersten Deckhaut (3) und der zweiten Deckhaut (4) aus der Oberfläche des Blechs (14), umfassend die temporäre Schutzschicht (11),

- Entfernen der temporären Schutzschicht (11) von dem Befestigungsprofil (6),

- Vorsehen (104) der Schutzschicht (7) in dem Befestigungsprofil (6) durch Anstreichen.

Revendications

1. Panneau composite à structure sandwich (1), comprenant

- un premier revêtement de face (3) en tôle,

- un deuxième revêtement de face (4) en tôle, et

- une âme (5) réalisée en un matériau thermiquement isolant agencée entre le premier revêtement de face et le deuxième revêtement de face, les premier et deuxième revêtements de face étant fixés à l'âme,

- un bord de fixation (2) au niveau du bord du panneau composite (1) pour fixer le panneau composite à un autre panneau composite (1),

- le bord de fixation (2) comprenant

- un profilé de fixation (6) qui est formé à partir de la tôle d'au moins un desdits revêtements (3, 4) et conformé pour une fixation à rainure et languette,

- le panneau composite à structure sandwich (1) comprenant en outre

- une couche protectrice (7) de matériau hydrophobe agencée sur la surface externe d'une partie de la tôle dans le profilé de fixation (6), pour inhiber ou atténuer des contacts ou couplages galvaniques entre des panneaux composites fixés les uns aux autres, dans lequel

- les revêtements de face (3, 4) sont dépourvus de ladite couche protectrice (7).

2. Panneau composite tel que revendiqué dans la revendication 1, dans lequel la couche protectrice (7) est un polymère ou un film composite polymère.

3. Panneau composite tel que revendiqué dans la revendication 1, dans lequel la couche protectrice (7) est une couche de peinture.

4. Panneau composite tel que revendiqué dans l'une des revendications précédentes, dans lequel le profilé de fixation (6) comprend un profilé de languette (8), et dans lequel la couche protectrice (7) est agencée sur la surface dudit profilé de languette.

5. Panneau composite tel que revendiqué dans l'une des revendications précédentes, dans lequel le profilé de fixation (6) comprend un profilé de rainure (9), et dans lequel la couche protectrice (7) est agencée sur la surface dudit profilé de rainure.

6. Panneau composite tel que revendiqué dans l'une des revendications précédentes, dans lequel le bord de fixation (2) comprend au moins deux profilés de fixation (6).

7. Panneau composite tel que revendiqué dans la revendication 6, dans lequel un premier profilé de fixation (6) est formé à partir du premier revêtement de face (3) et un deuxième profilé de fixation (6) est formé à partir du deuxième revêtement de face (4).

8. Panneau composite tel que revendiqué dans la revendication 7, dans lequel le bord de fixation (2) comprend une section de l'âme (5) entre les premier et deuxième profilés de fixation (6).

9. Panneau composite tel que revendiqué dans l'une des revendications précédentes, comprenant des bords de fixation (2) au niveau de bords opposés de celui-ci, de sorte que lesdits bords de fixation (2) soient homologues.

10. Panneau composite tel que revendiqué dans l'une des revendications précédentes, dans lequel le matériau du revêtement de face (3, 4) est en métal naturellement passivant.

11. Panneau composite tel que revendiqué dans l'une quelconque des revendications 5 à 10, comprenant un composant de joint étanche à l'air (10) agencé dans le profilé de rainure (9).

12. Procédé de fabrication du panneau composite tel que revendiqué dans l'une quelconque des revendications précédentes, le procédé comprenant les étapes :

- fournir (100) une tôle (14),

- former (102) un bord de fixation (2) et un profilé de fixation (6) sur la tôle (14), fournissant ainsi un premier revêtement de face (3) et un deuxième revêtement de face (4),

- fixer (103) le premier revêtement de face (3) et le deuxième revêtement de face (4) à une âme (5) réalisée en un matériau thermiquement isolant,

- fournir (104) une couche protectrice (7) de matériau hydrophobe dans le profilé de fixation (6), et

- laisser (105) les revêtements de face (3, 4) sans ladite couche protectrice (7).

13. Procédé tel que revendiqué dans la revendication 12, comprenant le fait de :

- agencer (101) une couche protectrice temporaire (11) de matériau hydrophobe sur la surface de la tôle (14),

- former les faces externes du premier revêtement de face (3) et du deuxième revêtement de face (4) à partir de la surface de tôle (14) comprenant la couche protectrice temporaire (11), et

- après assemblage du panneau composite (1) :

- retirer (105) la couche protectrice temporaire (11) sur au moins une des faces externes des revêtements, mais

- laisser (106) la couche protectrice temporaire (11) sur le profilé de fixation (6), formant ainsi la couche protectrice (7) dans le profilé de fixation (6).

14. Procédé tel que revendiqué dans la revendication 12, comprenant le fait de :

- fournir (104) la couche protectrice (7) dans le profilé de fixation (6) par peinture.

15. Procédé tel que revendiqué dans la revendication 12, comprenant le fait de :

- agencer (100) une couche protectrice temporaire (11) sur la surface de la tôle (14),

- former les faces externes du premier revêtement de face (3) et du deuxième revêtement de face (4) à partir de la surface de tôle (14) comprenant la couche protectrice temporaire (11),

- retirer la couche protectrice temporaire (11) du profilé de fixation (6), et

- fournir (104) la couche protectrice (7) dans le profilé de fixation (6) par peinture.

Drawing