A method for packing at least a flat article, the article comprising two opposite surfaces, upper and lower, having a quadrangular geometry and a plurality of lateral flanks, the method comprising the following steps: - supplying a pair of blanks (3, 4) made of a packing material, each comprising a central region; an upper flap connected to a first side of the central region by means of a first crease line; a lower flap connected to a second side, opposite the first side, of the central region by means of a second crease line; a first lateral flap, connected to a third side of the central region by means of a third crease line, identifying a free end opposite the third crease line; a pair of first folds, an upper fold and a lower fold, connected by crease lines to two sides of the first lateral flap which folds (80, 81) are opposite one another and perpendicular to the third crease line; a second lateral flap connected to a fourth side, opposite the third side, of the central region by means of a fourth crease line, identifying a free end opposite the fourth crease line; - covering two opposite lateral flanks of the article with the central region of each blank (3, 4); - partial covering of the opposite surfaces of the article with the upper flap and lower flap of each blank (3, 4); - covering the remaining lateral flanks of the article with the first and second lateral flaps (8, 9) of each blank (3, 4) such as to superpose the free ends (8a,9a) of the lateral flaps (8, 9) of a blank with corresponding free ends (8a, 9a) of the lateral flaps (8, 9) of the other blank, such as to identify two zones (L 1) of first lateral superposing; - stabilising of the superposing zones (L 1, L 2, A) by stabilising means (10, 11); characterized in that: - each supplied blank additionally comprises a pair of second folds, an upper fold and a lower fold, connected by crease lines to two sides of the second lateral flap, which folds (90, 91) are opposite one another and perpendicular to the fourth crease line; - the method provides partial covering of the opposite surfaces of the article with the first folds (80, 81) and the second folds (90, 91) of each blank (3, 4), such as to define, for each surface of the article, four zones of corner superposing in which one of the flaps, upper and lower, is arranged superiorly or inferiorly of one of the first folds (80, 81) or the second folds (90, 91), and two zones (L 2) of a second lateral superposing, adjacent to the zones (L 1) of first lateral superposing, in which the first folds (80, 81) and the second folds (90, 91) of a blank are arranged superiorly or inferiorly of the corresponding first folds (80, 81) and second folds (90, 91) of the other blank. - supplying a pair of blanks (3, 4) made of a packing material, each comprising a central region; an upper flap connected to a first side of the central region by means of a first crease line; a lower flap connected to a second side, opposite the first side, of the central region by means of a second crease line; a first lateral flap, connected to a third side of the central region by means of a third crease line, identifying a free end opposite the third crease line; a pair of first folds, an upper fold and a lower fold, connected by crease lines to two sides of the first lateral flap which folds (80, 81) are opposite one another and perpendicular to the third crease line; a second lateral flap connected to a fourth side, opposite the third side, of the central region by means of a fourth crease line, identifying a free end opposite the fourth crease line; - covering two opposite lateral flanks of the article with the central region of each blank (3, 4); - partial covering of the opposite surfaces of the article with the upper flap and lower flap of each blank (3, 4); - covering the remaining lateral flanks of the article with the first and second lateral flaps (8, 9) of each blank (3, 4) such as to superpose the free ends (8a,9a) of the lateral flaps (8, 9) of a blank with corresponding free ends (8a, 9a) of the lateral flaps (8, 9) of the other blank, such as to identify two zones (L 1) of first lateral superposing; - stabilising of the superposing zones (L 1, L 2, A) by stabilising means (10, 11); - each supplied blank additionally comprises a pair of second folds, an upper fold and a lower fold, connected by crease lines to two sides of the second lateral flap, which folds (90, 91) are opposite one another and perpendicular to the fourth crease line; - the method provides partial covering of the opposite surfaces of the article with the first folds (80, 81) and the second folds (90, 91) of each blank (3, 4), such as to define, for each surface of the article, four zones of corner superposing in which one of the flaps, upper and lower, is arranged superiorly or inferiorly of one of the first folds (80, 81) or the second folds (90, 91), and two zones (L 2) of a second lateral superposing, adjacent to the zones (L 1) of first lateral superposing, in which the first folds (80, 81) and the second folds (90, 91) of a blank are arranged superiorly or inferiorly of the corresponding first folds (80, 81) and second folds (90, 91) of the other blank.