Patent ID: 6752262
Filing Date: 2004-06-22
Classification: B65D

Abstract:
A flat blank for the formation of a rigid carton for cigarette packets, which is substantially a parallelepiped, comprising a front wall, a rear wall, two side walls, a lid and a base; the blank having a longitudinal axis and comprising a central part delimited by two longitudinal fold lines which are parallel with the longitudinal axis and two side parts located on opposite sides of the central part; the blank also comprising a set of transversal fold lines which divide the central part into a first panel which forms the base, a second panel which forms the front wall, a third panel which forms the lid and a forth panel which forms the rear wall; the blank also comprising a pre-weakened tear line which separates the second panel into a first substantially trapezoidal portion and a second portion; the third panel being divided by a fold line into a first portion adjacent to the second panel and a second portion adjacent to the fourth panel; and the side parts comprises two fifth panels located on opposite sides of the first panel, which form the side walls; the second panel having respective first vertices located on the longitudinal fold lines in contact with the third panel; wherein the pre-weakened line has a central segment which is parallel with the transversal fold lines, and two side segment, that join the central segment to the two first vertices.