Folded cardboard blank dish-shaped container

A plane intermediate segment for producing a container made of a cardboard blank sealable on both sides, comprising:

• a rectangular bottom, four folded up lateral panels which are connectable with the bottom, four container corners, four approximately similar triangular corner panels which, at each container corner, corner panels are connected with the relevant lateral panels, whereby two corner panels of each are folded onto one another, and a circumferential, substantially double-walled outer flange parallel to the bottom and formed substantially of first outer strips and second outer strips, wherein the first outer strips are foldable at the respective lateral panel and extend break-free along the corner panels, and the second outer strips foldable onto the first outer strips are alignable with cut edges thereof towards an outer surface of the respective lateral panel and, apart from a triangular extension at the directly adjoining corners, are left out in the area of the corner panels, wherein the plane cardboard blank is provided with folding lines, and the second outer strips, including the triangular formed extensions, are folded over to a partly completed double-walled outer flange.