Abstract: A multiple layer material (11) comprising an extruded profile (27) and at least one lamination material (28, 29) adhered to at least one surface (32, 33) of the extruded profile (27) to form the multiple layer material (11). The lamination material (28, 29) is formed with a structure with indentations (48), and the multiple layer material (11) comprises a melt bond and a mechanical bond (41) between the extruded profile (27) and the lamination material (28, 29), wherein said melt bond is formed by at least partially melting the material of the surface (32, 33) of the extruded profile (27) and at least partially melting only a part of the thickness of the lamination material (28, 29), wherein said mechanical bond (41) is formed by that the material at the at least partially melted surface (32, 33) of the extruded profile (27) is brought into the indentations of the lamination material (28, 29), and wherein the lamination material, at least before it is adhered to the extruded profile, is permeable to air.

Abstract: A system for producing a multiple layer material (49), comprising first and second corrugation rolls (14, 15) for providing a corrugated profile (16) having a plurality of crests (47), wherein the system further comprises first and second press rolls (21, 22) for applying a material sheet (19, 20) to crests (47) of the corrugated profile (16), and a plurality of heating members (28) arranged between the press rolls (21, 22) for welding the material sheet (19, 20) to the crests (47) of the corrugated profile (16) to form the multiple layer material (49). A guiding plate (48) is arranged between the corrugation 10 rolls (14, 15) and the heating members (28). The guiding plate (16) is arranged with a profile engaging side (50) having a plurality of crests (52) corresponding to the crests (47) of the corrugated profile (16). A cooling arrangement is provided for cooling the guiding plate (48). A method for producing the multiple layer material (49) is also disclosed.

Abstract: A system for producing a multiple layer material (49), comprising first and second corrugation rolls (14, 15) for providing a corrugated profile (16) having a plurality of crests (47), wherein the system further comprises first and second press rolls (21, 22) for applying a material sheet (19, 20) to crests (47) of the corrugated profile (16), and a plurality of heating members (28) arranged between the press rolls (21, 22) for welding the material sheet (19, 20) to the crests (47) of the corrugated profile (16) to form the multiple layer material (49). A guiding plate (48) is arranged between the corrugation 10 rolls (14, 15) and the heating members (28). The guiding plate (16) is arranged with a profile engaging side (50) having a plurality of crests (52) corresponding to the crests (47) of the corrugated profile (16). A cooling arrangement is provided for cooling the guiding plate (48). A method for producing the multiple layer material (49) is also disclosed.