US Patent 11478391 Single-use expandable liquid container and blank

The present invention relates to a single-use container manufactured from sheet material, the single-use container comprising: a base, wherein the base is flat and forms a surface on which the single- use container can stand, —a front wall, a right wall, a left wall and a rear wall which extend upward from the base, wherein the front wall and the rear wall are convex, and wherein the right wall and left wall are concave, an upper end which connects the front wall, right wall, left wall and rear wall.