Aerosol-generating article having two aerosol-generating segments

Abstract

An aerosol-generating article is provided, including: an aerosol-generating rod configured to produce an inhalable aerosol upon heating; a downstream section provided downstream of the aerosol-generating rod and extending to the downstream end of the aerosol-generating article; and a ventilation zone at a location along the downstream section, the aerosol-generating rod including a first aerosol-generating segment including a first aerosol-generating substrate, and a second aerosol-generating segment located upstream of the first aerosol-generating segment and including a second aerosol-generating substrate, a total combined length of the and the second segments being at least 20 millimetres, a ratio of the total combined length of the first and the second segments to an overall length of the article being less than or equal to 0.6, and the article having a ventilation level of at least 40 percent. An aerosol-generating system including the aerosol-generating article and an aerosol-generating device is also provided.

1 .- 15 . (canceled) 
     
     
         16 . An aerosol-generating article, comprising:
 an aerosol-generating rod configured to produce an inhalable aerosol upon heating;   a downstream section provided downstream of the aerosol-generating rod and extending to the downstream end of the aerosol-generating article; and   a ventilation zone at a location along the downstream section,   wherein the aerosol-generating rod comprises:
 a first aerosol-generating segment comprising a first aerosol-generating substrate, and 
 a second aerosol-generating segment located upstream of the first aerosol-generating segment and comprising a second aerosol-generating substrate, 
   wherein a total combined length of the first aerosol-generating segment and the second aerosol-generating segment is at least 20 millimetres,   wherein a ratio of the total combined length of the first aerosol-generating segment and the second aerosol-generating segment to an overall length of the aerosol-generating article is less than or equal to 0.6, and   wherein the aerosol-generating article has a ventilation level of at least 40 percent.   
     
     
         17 . The aerosol-generating article according to  claim 16 ,
 wherein the first aerosol-generating substrate comprises one or more aerosol formers and the second aerosol-generating substrate comprises one or more aerosol formers, and   wherein an aerosol former content of the second aerosol-generating substrate is within percent of an aerosol former content of the first aerosol-generating substrate.   
     
     
         18 . The aerosol-generating article according to  claim 16 , wherein a density of the second aerosol-generating substrate is within 10 percent of a density of the first aerosol-generating substrate. 
     
     
         19 . The aerosol-generating article according to  claim 16 , wherein a length of the second aerosol-generating segment is within 10 percent of a length of the first aerosol-generating segment. 
     
     
         20 . The aerosol-generating article according to  claim 16 , wherein the downstream section comprises a hollow tubular cooling element. 
     
     
         21 . The aerosol-generating article according to  claim 20 , wherein the ventilation zone comprises a plurality of perforations through a peripheral wall of the hollow tubular cooling element. 
     
     
         22 . The aerosol-generating article according to  claim 20 , wherein the hollow tubular cooling element has a length of at least 15 millimetres. 
     
     
         23 . The aerosol-generating article according to  claim 20 ,
 wherein the downstream section comprises a downstream filter segment located downstream of the hollow tubular element, and   wherein the downstream filter segment is a solid plug.   
     
     
         24 . The aerosol-generating article according to  claim 16 , wherein the aerosol-generating article has a ventilation level of at least 60 percent. 
     
     
         25 . The aerosol-generating article according to  claim 16 , wherein the aerosol-generating article has an overall length of at least 60 millimetres. 
     
     
         26 . The aerosol-generating article according to  claim 16 , wherein one or both of the first aerosol-generating substrate and the second aerosol-generating substrate comprises a shredded tobacco material. 
     
     
         27 . The aerosol-generating article according to  claim 16 , wherein one or both of the first aerosol-generating substrate and the second aerosol-generating substrate has a density of less than 400 milligrams per cubic centimetre. 
     
     
         28 . The aerosol-generating article according to  claim 16 , wherein each of the first aerosol-generating substrate and the second aerosol-generating substrate comprises at least 5 percent by weight of aerosol former, on a dry weight basis. 
     
     
         29 . The aerosol-generating article according to  claim 16 ,
 wherein the first aerosol-generating substrate is circumscribed by a first wrapper, and   wherein the second aerosol-generating substrate is circumscribed by a second wrapper, separate from the first wrapper.   
     
     
         30 . An aerosol-generating system, comprising:
 an aerosol-generating article according to  claim 16 ; and   an aerosol-generating device comprising a heating chamber configured to receive at least part of the aerosol-generating article and a heater configured to heat the aerosol-generating rod of the aerosol-generating article when the aerosol-generating article is received within the heating chamber.