Method for the formation of a box from a blank comprising a succession of four main rectangular panels (3, 4, 5, 6) ending in a gluing tongue, connected to each other by first fold lines parallel to each other or by intermediate panels, namely a first central fold line or a first central intermediate panel, two first lateral fold lines (9, 10) or two lateral intermediate panels (21, 22) and a first tongue fold line or an end lateral panel, and including a set of lateral flaps connected to one side of said succession of panels by second fold lines perpendicular to the first fold lines, in order to form the bottom of the box, characterised in that - the blank is extracted by suction from a storage magazine, - the blank is transported horizontally over a support having an upper edge of V-shaped or substantially V-shaped cross-section and faces which correspond to the main panels and which are inclined relative to the horizontal by a given angle α, so that the so-called reference first central fold line or central intermediate panel is opposite said edge, - the blank is deposited on the support so that the reference fold line or intermediate panel coincides or substantially coincides with said edge, - next the blank is applied to a polygonal mandrel (47, 103) of which the upper edge coincides and/or is an extension of the upper edge of the support, said mandrel having a shape complementary to that of the box, applying the panels adjacent to said reference first fold line or intermediate panel to the upper faces opposite the mandrel and applying the previously glued end panels and tongue to the lower faces opposite said mandrel, in order to form a tubular box body which is angled relative to the horizontal, - the bottom of the box is formed by folding and applying the flaps to each other after gluing, - the box which is thus formed at an angle is ejected, - it is set straight, then transferred to a filling station. - the blank is extracted by suction from a storage magazine, - the blank is transported horizontally over a support having an upper edge of V-shaped or substantially V-shaped cross-section and faces which correspond to the main panels and which are inclined relative to the horizontal by a given angle α, so that the so-called reference first central fold line or central intermediate panel is opposite said edge, - the blank is deposited on the support so that the reference fold line or intermediate panel coincides or substantially coincides with said edge, - next the blank is applied to a polygonal mandrel (47, 103) of which the upper edge coincides and/or is an extension of the upper edge of the support, said mandrel having a shape complementary to that of the box, applying the panels adjacent to said reference first fold line or intermediate panel to the upper faces opposite the mandrel and applying the previously glued end panels and tongue to the lower faces opposite said mandrel, in order to form a tubular box body which is angled relative to the horizontal, - the bottom of the box is formed by folding and applying the flaps to each other after gluing, - the box which is thus formed at an angle is ejected, - it is set straight, then transferred to a filling station.