B65D 5/2033

Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper by folding-up portions connected to a central panel from all sides to form a container body, e.g. of tray-like form {the central panel having a non rectangular shape polygonal having more than four sides, e.g. hexagonal, octogonal}