Patent ID: 7823367

Claim:
A method for making a cardboard pack of the box type, of a variable volume adapted in each case to a height of packed products, the method comprising: cutting the box along its vertical edges, beginning at its top and continuing for part of its height; forming fold lines at a suitable height around the sides of the box to define top flaps; folding the flaps onto the contents of the prefilled box; in which placing at least one inflated or inflatable void-filling bag into the box, around and/or above the packed products, after the fold lines defining the top flaps have been formed, and before the top flaps are folded onto the contents of the box; and adjusting the degree of inflation of the at least one void-filling bag to the free volume existing around and/or above the packed products, after inserting the at least one void-filling bag into the box but before the box is closed by folding the flaps, the free volume being bounded by the interior dimensions of the box in a closed position, wherein each of the at least one void-filling bags is first inflated to a predefined maximum degree of inflation independently of the volume to be filled, inserted into the box, pierced once to evacuate the excess air, and finally sealed, so as to adapt to the volume to be filled in each case and definitively enclose the quantity of air held in the bag.