Packaging device with variable capacity obtained from a flong made from a semi-rigid material

摘要

The device has rectangular or square side walls (14, 16) provided with first and second fold lines (44, 48) arranged parallel to a third fold line (18). The first and second fold lines are formed remote from edges of the side walls by a distance (L), and extends at the level of gussets comprising fourth and fifth fold lines (46, 50) at 45 degree. The fourth and fifth fold lines extend from intersection lines of the first and second fold lines with sixth and seventh fold lines (31, 33) connecting folds (26, 26', 28, 28') of the gussets with the walls. An independent claim is also included for a semi-rigid blank for obtaining a packing device, comprising side walls.