Hermetically sealed packet

Abstract

A hermetically sealed cigarette packet is fashioned from a flat blank of substantially rectangular outline, referable to a longitudinal axis, having at least one face coated with an impermeable and heat-sealable material. The blank is divided by two crease lines extending parallel to the axis and by further crease lines transverse to the selfsame axis into a series of panels aligned on the longitudinal axis, each furnished with two flaps extending from its opposite ends; each flap is separated from the adjacent flap by a V-shaped notch of which the tip is positioned at a given distance from the corresponding longitudinal crease line, on the side remote from the longitudinal axis, rather than extending the full depth of the flap and intersecting the selfsame crease line.

1 ) A hermetically sealed packet, typically for cigarettes, obtainable from a flat blank divided by crease lines into a plurality of panels and a plurality of connecting flaps extending from the panels, wherein the flaps associated with at least two contiguous panels of the blank are separated partially one from another by a notch, in such a way as to remain joined one to another along a portion of predetermined length at the tip of the notch, and the blank presents at least one face coated at least in part with a heat-sealable material. 
   
   
       2 ) A hermetically sealed packet as in  claim 1 , obtained from a blank presenting a substantially rectangular outline, divided by two longitudinal crease lines extending parallel to the longitudinal axis of the blank, and by a plurality of crease lines disposed transversely to the axis, into a plurality of panels aligned along the selfsame axis, wherein the panels are associated each with two flaps extending from the opposite ends of the relative panel, disposed symmetrically in relation to the longitudinal axis, and each flap is connected to a flap of the adjacent panel externally of the longitudinal crease line, considered relative to the longitudinal axis. 
   
   
       3 ) A hermetically sealed packet as in  claim 1 , wherein the notch presents a V shape and is positioned with the tip located externally of the corresponding longitudinal crease line, considered relative to the longitudinal axis, at a predetermined distance from the selfsame crease line. 
   
   
       4 ) A hermetically sealed packet as in  claim 1 , wherein the blank presents a perforation line or cutout of letter “U” outline, such as will create an opening through which the cigarettes can be taken from the packet. 
   
   
       5 ) A hermetically sealed packet as in  claim 1 , wherein the blank is of cardboard or paperboard material. 
   
   
       6 ) A hermetically sealed packet as in  claim 1 , wherein at least one face of the blank is coated with heat-sealable material at least on and around the areas where the connecting flaps associated with two contiguous panels are joined one to another.