| 摘要 |
<p>A method for the production of a package (2) from a blank (1) of sheet material, in which suitable folding and cutting lines define the front and back wall panels (3,4) and the side wall panels (5,6), provides for detaching from the blank (1) a shaped flap (16) joint to lid-forming flaps (8a,9a) extending from the ends of the front and back wall panels (3,4). The shaped flap (16) forms a kind of bridge between the lid-forming panels (8a,9a). The flap (16) is then attached to the surface designed to be turned towards the inside of the package (2) of a tear flap (12) delimited by a cutting line (14) and by perforated lines (15) on a side wall panel (5), so that the flap (16) extends with a couple of wings (20) beside the front and back panels (3,4). The front and back panels (3,4) and the side wall panels (5,6) of are folded to obtain a tubular element (100), thus folding also the wings (20) with respect to a central part (18) of the flap (16) attached to the side wall panel (5). The wings (20) extending beside the front and back panels (3,4), form the side walls of an outwardly tipping spout (200) that is formed in its front part by the tear flap (12). <IMAGE></p> |
