Packaging carton for food, has upper cover flaps held closed by stamped hinged tab designed to enter opening and to be swung into position by operating strip

摘要

A semicircular fastening tab (18) is stamped out in the upper cover flap (15). The tab (18) points toward the fold (20) between the upper cover flap (15) and the sidewall (12) connected to it. The remaining area (22) associated with the tab (18) remains integral with the upper cover flap (15). The fastening tab (18) can be swung out for insertion into a corresponding opening (16) in the lower cover flap (14). The dimensions of the opening in the lower cover flap, allow the fastening tab to be swung to an underlying position, inside the lower cover flap. A hinge line (21) is stamped at the same time as the tab. With the free edge (23) this (21) defines an operating strip (22) for the tab (18). The hinge line is coincident with the outer edge (17) of the lower cover flap. Lower side flaps (13) are hinged to the other two, mutually-opposite sidewalls (12). They (13) have cut-outs (25) facilitating positioning of the tab (18) when the upper and lower covering flaps are closed. The edges (25, 26) of the cut-outs, are designed to clear the tab and facilitate its swinging into position. Multiple tabs and openings may be provided over the width of the covering flaps.