Patent ID: 6755300
Filing Date: 2004-06-29
Classification: B31B,B65D,Y10S

Abstract:
A substantially rectangular flat blank from which to produce a rigid packet (2), the rigid packet comprising a cup-shaved body (3), and a lid (4) hinged to said cup-shaved body (3); the cup-shaped body (3) and the lid (4) having respective major lateral walls (10, 11) and respective minor lateral walls (9); the blank (1; 23) comprising a number of preweakened fold segments (16,17; 16,17,24) having at least two different degrees of weakness; said fold segments (16,17; 16,17,24) comprising a number of longitudinal fold segments (17; 17,24) and a number of transverse fold segments (16); some (17d,17b,17f; 17) of said longitudinal fold segments (17,24) having a first degree of weakness, and the others (17a,17e,17c; 24) a second degree of weakness lower than said first degree of weakness; said longitudinal fold segments (17) are aligned with one another alone at least two outer longitudinal lines (18e) and two inner longitudinal lines (18i) extending alone a portion of the blank extending between said two outer longitudinal lines (18e); said transverse fold segments (16) dividing the blank (1), between said two inner longitudinal lines (18i), into a first panel (10â€²) corresponding to a first major lateral wail (10) of the cup-shaped body (3), and into a second panel (11â€²) corresponding to a second major lateral wall (11) of the cup-shaped body (3); the two longitudinal segments (17d) located on opposite sides of said first panel (10â€²), and each defining part of a respective said outer longitudinal line (18e), and the two longitudinal segments (17b) located on opposite sides of said second panel (11â€²), and each defining part of a respective said inner longitudinal line (18i), having a degree of weakness greater than all the other said longitudinal fold segments (17).