Aerosol-generating article comprising a mouth-end cooling element

Abstract

An aerosol-generating article for producing an aerosol upon heating is provided, the article including: a rod of aerosol-generating substrate including an aerosol former, the substrate having an aerosol former content of greater than 10 percent on a dry weight basis; a hollow tubular support element positioned immediately downstream of the rod; and an aerosol-cooling element downstream of the hollow tubular support element, the aerosol-cooling element extending all the way to a downstream end of the article and including a hollow tubular segment arranged immediately downstream of the hollow tubular support element and having a transverse wall at a location between upstream and downstream ends thereof, such that the hollow tubular segment defines a first cavity upstream of the transverse wall and a second cavity downstream of the transverse wall, and the transverse wall including one or more openings establishing a fluid communication between the first and the second cavities.

1 . An aerosol-generating article for producing an aerosol upon heating, the aerosol-generating article comprising:
 a rod of aerosol-generating substrate comprising an aerosol former, the aerosol-generating substrate having an aerosol former content of greater than 10 percent on a dry weight basis;   a hollow tubular support element positioned immediately downstream of the rod of aerosol-generating substrate; and   an aerosol-cooling element downstream of the hollow tubular support element, the aerosol-cooling element extending all the way to a downstream end of the aerosol-generating article,   wherein the aerosol-cooling element comprises a hollow tubular segment arranged immediately downstream of the hollow tubular support element, the hollow tubular segment having a transverse wall at a location between an upstream end and a downstream end of the hollow tubular segment, such that the hollow tubular segment defines a first cavity upstream of the transverse wall and a second cavity downstream of the transverse wall, and   wherein the transverse wall comprises one or more openings establishing a fluid communication between the first cavity and the second cavity.   
     
     
         2 . The aerosol-generating article according to  claim 1 , wherein the transverse wall has a single substantially central opening provided therein and having an equivalent diameter of between 0.3 mm and 0.6 mm. 
     
     
         3 . The aerosol-generating article according to  claim 1 , wherein the transverse wall has a plurality of substantially equally circumferentially spaced apart openings, each opening having an equivalent diameter of between 0.1 mm and 0.5 mm. 
     
     
         4 . The aerosol-generating article according to  claim 1 , wherein the transverse wall has a plurality of substantially radial slits extending from a center of the transverse wall over a length less than a radius of the transverse wall. 
     
     
         5 . The aerosol-generating article according to  claim 1 , wherein a length of the aerosol-cooling element is at least about 5 mm. 
     
     
         6 . The aerosol-generating article according to  claim 1 , wherein a length of the aerosol-cooling element is less than about 20 mm. 
     
     
         7 . The aerosol-generating article according to  claim 1 , wherein a length of the first cavity is less than a length of the second cavity. 
     
     
         8 . The aerosol-generating article according to  claim 1 , wherein a ratio between a length of the first cavity and a length of the second cavity is from about 0.15 to about 0.8. 
     
     
         9 . The aerosol-generating article according to  claim 1 , wherein a length of the first cavity is at least about 3 mm. 
     
     
         10 . The aerosol-generating article according to  claim 1 , wherein a length of the first cavity is less than about 13 mm. 
     
     
         11 . The aerosol-generating article according to  claim 1 , wherein a length of the second cavity is at least about 5 mm. 
     
     
         12 . The aerosol-generating article according to  claim 11 , wherein a length of the second cavity is less than about 17 mm. 
     
     
         13 . The aerosol-generating article according to  claim 1 , wherein a thickness of a peripheral wall of the hollow tubular segment is at least about 2 mm. 
     
     
         14 . The aerosol-generating article according to  claim 11 , wherein an outer diameter of the hollow tubular segment is at least about 3 mm. 
     
     
         15 . The aerosol-generating article according to  claim 1 , wherein an overall length of the rod of aerosol-generating substrate is from about 5 mm to about 35 mm. 
     
     
         16 . The aerosol-generating article according to  claim 1 , further comprising a ventilation zone at a location along the first cavity upstream of the transverse wall.