EP3772556B1 - A composite panel and a method for manufacturing a composite panel - Google Patents

A composite panel and a method for manufacturing a composite panel Download PDF

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Publication number
EP3772556B1
EP3772556B1 EP19190513.2A EP19190513A EP3772556B1 EP 3772556 B1 EP3772556 B1 EP 3772556B1 EP 19190513 A EP19190513 A EP 19190513A EP 3772556 B1 EP3772556 B1 EP 3772556B1
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EP
European Patent Office
Prior art keywords
attachment
protective layer
composite panel
profile
face skin
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP19190513.2A
Other languages
German (de)
French (fr)
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EP3772556A1 (en
Inventor
Jyrki Kesti
Erkki Honkakoski
Pekka Roivio
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rautaruukki Oyj
Original Assignee
Rautaruukki Oyj
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rautaruukki Oyj filed Critical Rautaruukki Oyj
Priority to EP19190513.2A priority Critical patent/EP3772556B1/en
Priority to PL19190513T priority patent/PL3772556T3/en
Priority to LTEP19190513.2T priority patent/LT3772556T/en
Priority to DK19190513.2T priority patent/DK3772556T3/en
Publication of EP3772556A1 publication Critical patent/EP3772556A1/en
Application granted granted Critical
Publication of EP3772556B1 publication Critical patent/EP3772556B1/en
Active legal-status Critical Current
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/26—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups
    • E04C2/284—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups at least one of the materials being insulating
    • E04C2/292—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups at least one of the materials being insulating composed of insulating material and sheet metal
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F13/00—Coverings or linings, e.g. for walls or ceilings
    • E04F13/07—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
    • E04F13/08—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements
    • E04F13/0875—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements having a basic insulating layer and at least one covering layer
    • E04F13/0876—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements having a basic insulating layer and at least one covering layer the covering layer comprising mutual alignment or interlocking means
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F13/00—Coverings or linings, e.g. for walls or ceilings
    • E04F13/07—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
    • E04F13/08—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements
    • E04F13/12—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements of metal or with an outer layer of metal or enameled metal

Definitions

  • 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.
  • 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.
  • the invention further relates to a method for manufacturing the composite panel.
  • 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.
  • weathering steels such as COR-TEN steel
  • 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.
  • a sandwich-structured composite panel comprising
  • the composite panel may provide inhibited or attenuated galvanic contacts or couplings between composite panels attached to each other.
  • a final panel structure having good resistance against crevice corrosion at composite panel attachment joints may be achieved.
  • 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:
  • the protective layer is a polymer or polymer composite film.
  • An advantage is that a protective layer that is durable may be achieved.
  • the protective layer is a paint layer.
  • An advantage is that a very thin protective layer may be achieved.
  • the attachment profile comprises a tongue-profile
  • the protective layer is arranged on surface of said tongue-profile.
  • the attachment profile comprises a groove-profile, and wherein the protective layer is arranged on surface of said groove-profile.
  • the attachment edge comprises at least two attachment profiles.
  • a first attachment profile is formed from the first face skin and a second attachment profile is formed from the second face skin.
  • the attachment edge comprises a section of the core between the first and second attachment profiles.
  • 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.
  • the material of the face skin is of naturally passivating metal.
  • the core is a board of foamed polyurethane.
  • the core is a polyisocyanurate (PIR) insulation board.
  • PIR polyisocyanurate
  • the core is a mineral wool element.
  • the attachment edge is arranged on the upper or the lower edge of the panel.
  • the composite panel comprises an airtight seal component arranged in the groove-profile.
  • 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.
  • the method comprises: providing the protective layer in the attachment profile by painting.
  • 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.
  • Figure 1 is a schematic side view of a composite panel in partial cross-section.
  • the composite panel 1 may be e.g. a façade cladding panel element, or a partition wall panel element, or a ceiling panel element.
  • 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.
  • the material of the face skin 3, 4 is naturally passivating metal, such as weathering steel or COR-TEN steel.
  • 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.
  • PIR polyisocyanurate
  • An attachment edge 2 is arranged at the edge of the composite panel 1 for attaching the composite panel to another composite panel.
  • 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.
  • the composite panel 1 comprises attachment edges 2 at opposite edges thereof, such that said attachment edges 2 are counterparts to each other.
  • 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.
  • the protective layer 7 is a polymer or polymer composite film, such as polyethylene (e.g. high-density polyethylene HDPE) or polypropylene film.
  • the protective layer comprises polyethylene terephthalate PET, having good ultraviolet resistance, low water absorption and low electrical conductivity.
  • the protective layer comprises polyethylene naphthalene PEN, having better ultraviolet resistance, lower water absorption and lower electrical conductivity.
  • 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.
  • the protective layer 7 is a paint layer.
  • the attachment profile 6 comprises a tongue-profile 8, and the protective layer 7 is arranged on surface of said tongue-profile.
  • the attachment profile 6 comprises a groove-profile 9, and the protective layer 7 is arranged on surface of said groove-profile.
  • the attachment edge 2 comprises at least two attachment profiles 6.
  • the attachment edge 2 comprises two parallel tongue-profiles 8, or two parallel groove-profiles 9.
  • the attachment edge 2 comprises one tongue-profile and one groove-profile arranged parallel with the tongue-profile.
  • 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.
  • 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.
  • the attachment edge 2 comprises a section of the core 5 between the first and second attachment profiles 6.
  • 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.
  • attachment means 12 attaching the composite panels 1 to a support structure 13 are screws.
  • another type of attachment means may be used.
  • the composite panel is glued to the support structure.
  • the support structure 13 may be basically any structure of a building or a construction being suitable for the attachment of the composite panels.
  • Figures 2a - 2d are schematic views of method for manufacturing a composite panel.
  • it is first provided 100 a sheet metal 14.
  • the sheet metal is provided from a roll of metal sheet 15.
  • the sheet metal may also be provided in plate-form.
  • a temporary protective layer 11 of hydrophobic material is arranged 101 on the surface of the sheet metal 14.
  • 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.
  • 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.
  • 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.
  • a core made of thermally insulating material, by e.g. gluing.
  • 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.
  • 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 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.
  • 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.
  • the protective layer 7 is provided as a strip of polymer or polymer composite film that is attached to the attachment profile 6.
  • the protective layer 7 is applied in the attachment profile 6 by painting.
  • 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.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Laminated Bodies (AREA)
  • Finishing Walls (AREA)

Description

    BACKGROUND
  • 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.
  • 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.
  • The invention further relates to a method for manufacturing the composite panel.
  • 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.
  • 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
  • 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.
  • 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.
  • 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.
  • 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.
  • The arrangement and the method are characterised by what is stated in the independent claims.
  • Advantageously, the protective layer is a polymer or polymer composite film. An advantage is that a protective layer that is durable may be achieved.
  • Advantageously, the protective layer is a paint layer. An advantage is that a very thin protective layer may be achieved.
  • 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.
  • 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.
  • Optionally, the attachment edge comprises at least two attachment profiles. An advantage is that a robust attachment of panels may be achieved.
  • 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.
  • 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.
  • 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.
  • 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.
  • In particular, the core is a board of foamed polyurethane. An advantage is that good thermal insulation properties may be achieved.
  • 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.
  • Optionally, the core is a mineral wool element. An advantage is that a composite panel having good flame-retardant properties may be achieved.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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
  • 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.
  • 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
  • Figure 1 is a schematic side view of a composite panel in partial cross-section.
  • The composite panel 1 may be e.g. a façade cladding panel element, or a partition wall panel element, or a ceiling panel element.
  • 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.
  • Advantageously, the material of the face skin 3, 4 is naturally passivating metal, such as weathering steel or COR-TEN steel.
  • 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.
  • 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.
  • 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.
  • 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.
  • Optionally, the protective layer 7 is a paint layer.
  • 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.
  • 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.
  • 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.
  • In particular, the attachment edge 2 comprises a section of the core 5 between the first and second attachment profiles 6.
  • 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.
  • 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.
  • The support structure 13 may be basically any structure of a building or a construction being suitable for the attachment of the composite panels.
  • 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.
  • A temporary protective layer 11 of hydrophobic material is arranged 101 on the surface of the sheet metal 14.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • Optionally, the protective layer 7 is provided as a strip of polymer or polymer composite film that is attached to the attachment profile 6.
  • 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.
  • The invention is not limited solely to the embodiments described above, but instead variations are possible within the claims below.
  • 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
    • 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 (15)

  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.
EP19190513.2A 2019-08-07 2019-08-07 A composite panel and a method for manufacturing a composite panel Active EP3772556B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP19190513.2A EP3772556B1 (en) 2019-08-07 2019-08-07 A composite panel and a method for manufacturing a composite panel
PL19190513T PL3772556T3 (en) 2019-08-07 2019-08-07 A composite panel and a method for manufacturing a composite panel
LTEP19190513.2T LT3772556T (en) 2019-08-07 2019-08-07 A composite panel and a method for manufacturing a composite panel
DK19190513.2T DK3772556T3 (en) 2019-08-07 2019-08-07 Composite panel and method of manufacturing a composite panel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19190513.2A EP3772556B1 (en) 2019-08-07 2019-08-07 A composite panel and a method for manufacturing a composite panel

Publications (2)

Publication Number Publication Date
EP3772556A1 EP3772556A1 (en) 2021-02-10
EP3772556B1 true EP3772556B1 (en) 2021-11-10

Family

ID=67658523

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19190513.2A Active EP3772556B1 (en) 2019-08-07 2019-08-07 A composite panel and a method for manufacturing a composite panel

Country Status (4)

Country Link
EP (1) EP3772556B1 (en)
DK (1) DK3772556T3 (en)
LT (1) LT3772556T (en)
PL (1) PL3772556T3 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GR20220100364A (en) * 2022-05-03 2023-12-11 Μαρια Χρηστου Καραλη Fire-resistant and thermally insulating panel
FI131059B1 (en) * 2022-05-09 2024-08-22 Rautaruukki Oyj Wall structure

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2304886C3 (en) * 1973-02-01 1975-11-27 Hoesch Werke Ag, 4600 Dortmund Process for the continuous production of a component
US4104840A (en) * 1977-01-10 1978-08-08 Inryco, Inc. Metal building panel
BR9815958A (en) * 1998-06-25 2001-03-06 Milton J Altenberg On-site metal sandwich panels
JP2000017816A (en) * 1998-07-02 2000-01-18 Shinko Kogyo Kk Siding board
GB2423316B (en) * 2003-12-16 2009-03-04 Kingspan Holdings A roof panel
RU2009125464A (en) * 2006-12-21 2011-01-27 Раутарукки Ойй (Fi) INSULATION PANEL AND BINDING MECHANISM FOR THIS PANEL

Also Published As

Publication number Publication date
EP3772556A1 (en) 2021-02-10
DK3772556T3 (en) 2021-12-20
LT3772556T (en) 2022-02-25
PL3772556T3 (en) 2022-04-04

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