Abstract: A method for manufacturing a laminar construction panel comprising a first (1) and a second (2) metal plate and an acoustic insulation layer (3) interposed there between. The first and second metal plates are connected to each other by a number of locally welded joints distributed over the laminar construction panel and extended through an area of an acoustic isolation layer. The welded joints are formed by stud welding, one of the metal plates is provided with welding openings (4), and a welding pin (7) is pushed through the isolation layer against the other metal plate. The welded joints may be formed by spot welding, both metal plates are brought into electrical connection with the spot welding equipment, and the metal plates locally are pressed toward each other in such a way that mutual electrical contact is made.

Abstract: A method for manufacturing a laminar construction panel comprising a first (1) and a second (2) metal plate and an acoustic insulation layer (3) interposed there between. The first and second metal plates are connected to each other by a number of locally welded joints distributed over the laminar construction panel and extended through an area of an acoustic isolation layer. The welded joints are formed by stud welding, one of the metal plates is provided with welding openings (4), and a welding pin (7) is pushed through the isolation layer against the other metal plate. The welded joints may be formed by spot welding, both metal plates are brought into electrical connection with the spot welding equipment, and the metal plates locally are pressed toward each other in such a way that mutual electrical contact is made.