Method for manufacturing a multi-chamber profile and multi-chamber profile

A method for manufacturing a multi-chamber profile with at least three profile chambers, wherein a first middle chamber is arranged between two edge chambers, wherein a roll forming installation is fed with either

• a first metal strip and a second metal strip,
• the first metal strip and a second metal plate, or
• a first metal profile rod and the second metal strip,
• wherein the first metal strip or the first metal profile rod has two first edges in a cross-sectional direction of the first metal strip or the first metal profile rod and the second metal strip or the second metal plate has two second edges in a cross-sectional direction of the second metal strip or the second metal plate, wherein the first edges are brought into contact with the second metal strip or the second metal plate in such a manner by the roll forming installation and the first metal strip with the second metal strip, the first metal strip with the second metal plate or the first metal profile rod with the second metal strip are joined together thermally or mechanically at two first joints along the two first edges in a first joining step in such a manner that the first middle chamber is formed and closed, wherein the first middle chamber has a first wall constituted by the first metal strip or the first metal profile rod and a second wall constituted by the second metal strip or the second metal plate, wherein the second metal strip or the second metal plate is formed by the roll forming installation after the first joining step in such a way that the two edge chambers are formed, or the second metal strip is formed by the roll forming installation before the first joining step in such a way that the two edge chambers are formed before the first middle chamber.