A paperboard article (1) for making a container (8) comprises an annular frame (2), which surrounds an internal zone (20), and a plurality of wings (3) connected to the annular frame (2). Each wing (3) comprises a first portion (31) and a second portion (32), wherein the second portion (32) is connected to the annular frame (2) and is interposed between the annular frame (2) and the first portion (31). The paperboard article (1) is configured to adopt a flat configuration and an expanded configuration. In the flat configuration, the paperboard article (1) has a substantially planar shape and the wings (3) are coplanar without overlapping each other. In the expanded configuration, the paperboard article (1) has a substantially tray-like shape, wherein the annular frame (2) forms an annular flange (71), the first portions (31) of the wings (3) form a bottom wall (72) and the second portions (32) of the wings (3) form lateral walls (73). For at least one pair of wings (3), the first portion (31) of a first wing has a seat (34) and the first portion (31) of a second wing has a projection (35) that is housed in the seat (34) of the first wing: in the expanded configuration, an edge section (37) of the projection (35) makes contact with an edge section (36) of the seat (34).