Abstract: The invention relates to a container blank (1) comprising a bottom-forming wall (3) and two opposite side walls (2), said walls (2, 3) being joined along boundary lines (9, 10, 13). The container blank is characterised in that intersections (A, B, C, D) between a front boundary line (9) and respectively a rear boundary line (10) and an upper portion (5) and a bottom portion (7) constitute corners of a parallelogram having an angle of inclination ((x) relative to the longitudinal axis (L) of the container blank (1). The front boundary angle which is acute towards the bottom portion (7). The front boundary line (9) and the intermediate boundary line (13) give the central portion (6) an essentially symmetrical shape along the longitudinal axis (L) of the container blank (1). The invention also relates to a container (21) which is produced by filling of such a container blank (1).