Rectangular package formed from single sheet - has grip tongue reinforced by flaps extending sideways from fold lines

摘要

The sheet forms a rectangular package of cardboard or similar material, divided by transverse main fold lines into rectangular panels in pairs. One of the panels is edged, beyond a root fold line perpendicular to the main ones, by sealing flap forming, beyond a fold line parallel to its root fold line, a grip tongue. Reinforcing devices integral with the sheet double the tongue thickness. These devices form two reinforcing flaps (30) extending sideways from the tongue (25), and joined to it by fold lines (31) perpendicular to that (24) separating it from the rest of the sealing flap (22).