Method for packaging article in cardboard box realized starting from continuous cardboard strip

A method for packaging an article in a cardboard box realised starting from a continuous cardboard strip, the method comprising:

• advancing a continuous cardboard strip along an advancement direction;
• carrying out cutting operations during the advancement of the continuous cardboard strip along the advancement direction so as to obtain a single cardboard sheet from the continuous cardboard strip, wherein the single cardboard sheet has:
• a first transversal edge, a second transversal edge parallel to the first transversal edge, a first longitudinal edge and a second longitudinal edge parallel to the first longitudinal edge,
• wherein a partial transversal cut, parallel to the first transversal edge, which divides and separates the single cardboard sheet into a first sheet section, comprised between the first transversal edge and the partial transversal cut, and into a second sheet section, comprised between the partial transversal cut and the second transversal edge, wherein the first sheet section and the second sheet section are partially separated from one another by the partial transversal cut but remain joined and connected to one another only at two sheet portions comprised respectively between the two ends of the partial transversal cut and the two longitudinal borders of the single cardboard sheet and defining respectively a first hinge point and a second hinge point between the first sheet section and the second sheet section;
• advancing the single cardboard sheet thus obtained along the advancement direction;
• realising a longitudinal cut in the first sheet section, from the first transversal edge up to the partial transversal cut, in such a way as to divide the first sheet section into a first sheet half-section and a second sheet half-section, wherein the first sheet half-section remains hinged to the second sheet section by means of the first hinge point and the second sheet half-section remains hinged to the second sheet section by means of the second hinge point;
• realising, in the second sheet section, three transversal score lines, parallel to one another, between the first longitudinal edge and the second longitudinal edge, in such a way as to define:
• a first sector between the partial transversal cut and a first transversal score line, which will constitute a bottom wall of the box, a second sector between the first transversal score line and a second transversal score line, which will constitute a first lateral wall of the box, a third sector between the second score line and the third transversal score line, which will constitute an upper wall of the box, and a fourth sector between the third score line and the second transversal edge, which will constitute a second lateral wall of the box;
• rotating the first sheet half-section with respect to the first hinge point and rotating the second sheet half-section with respect to the second hinge point so as to arrange the first sheet half-section and the second sheet half-section above the first sector of the second sheet section by gluing the first sheet half-section to the first sector at a first overlapping strip in proximity of the first longitudinal edge and by gluing the second sheet half-section to the first sector at a second overlapping strip in proximity of the second longitudinal edge;
• rotating the first sheet half-section with respect to the first sector about the first overlapping strip and rotating the second sheet half-section with respect to the first sector about the second overlapping strip so as to arrange the first sheet half-section and the second sheet half-section at an angle with respect to the first sector, wherein the first sheet half-section will constitute a third lateral wall of the box and the second sheet half-section will constitute a fourth lateral wall of the box;
• resting an article with a respective base face above the first sector of the second sheet section;
• rotating the first sheet half-section with respect to the first overlapping strip so as to arrange the first sheet half-section facing a first lateral face of the article and rotating the second sheet half-section with respect to the second overlapping strip so as to arrange the second sheet half-section facing a second lateral face of the article;
• and
• rotating the second sector of the second sheet section about the first transversal score line, rotating the third sector of the second sheet section about the second transversal score line, rotating the fourth sector of the second sheet section about the third transversal score line,
• so as to arrange the second sector facing a third lateral face of the article, so as to arrange the third sector facing an upper face of the article and so as to arrange the fourth sector facing a fourth lateral face of the article in such a way as to obtain a box having a base wall, four lateral walls, an upper wall and containing the article internally thereof.