B65D 5/2095

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 {a part of the folded-up portions defining an inwardly folded ledge at the edges of the central panel}