Aerosol-generating article having two or more substrate segments

Abstract

An aerosol-generating article is provided, including: an aerosol-generating rod configured to produce an inhalable aerosol upon heating, the aerosol-generating rod including: a first aerosol-generating segment including a first aerosol-generating substrate, and a second aerosol-generating segment at a location upstream of the first aerosol-generating segment and including a second aerosol-generating substrate, the second aerosol-generating substrate having a higher aerosol former content than the first aerosol-generating substrate, and the second aerosol-generating substrate having a higher density than the first aerosol-generating substrate. 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, the aerosol-generating rod comprising:
 a first aerosol-generating segment comprising a first aerosol-generating substrate, and 
 a second aerosol-generating segment at a location upstream of the first aerosol-generating segment and comprising a second aerosol-generating substrate, 
 wherein the second aerosol-generating substrate has a higher aerosol former content than the first aerosol-generating substrate, and 
 wherein the second aerosol-generating substrate has a higher density than the first aerosol-generating substrate. 
   
     
     
         17 . The aerosol-generating article according to  claim 16 ,
 wherein the second aerosol-generating substrate further comprises an aerosol-generating film, the aerosol-generating film comprising a cellulosic based film forming agent, nicotine, and glycerol, and   wherein the aerosol-generating film has a glycerol content of at least 40 percent by weight.   
     
     
         18 . The aerosol-generating article according to  claim 17 , wherein the aerosol-generating film is substantially tobacco-free. 
     
     
         19 . The aerosol-generating article according to  claim 16 , wherein the first aerosol-generating substrate further comprises tobacco cut filler. 
     
     
         20 . The aerosol-generating article according to  claim 16 , wherein the second aerosol-generating segment abuts an upstream end of the first aerosol-generating segment. 
     
     
         21 . The aerosol-generating article according to  claim 16 , wherein the second aerosol-generating substrate further comprises at least 50 percent by weight of glycerol on a dry weight basis. 
     
     
         22 . 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.   
     
     
         23 . The aerosol-generating article according to  claim 16 , wherein an aerosol former content of the second aerosol-generating substrate is at least 25 percent higher than an aerosol former content of the first aerosol-generating substrate, on a dry weight basis. 
     
     
         24 . The aerosol-generating article according to  claim 16 , wherein an aerosol former content of the second aerosol-generating substrate is at least 1.5 times an aerosol former content of the first aerosol-generating substrate, on a dry weight basis. 
     
     
         25 . The aerosol-generating article according to  claim 16 , wherein a ratio of a length of the first aerosol-generating segment to a length of the second aerosol-generating segment is no more than 0.6. 
     
     
         26 . The aerosol-generating article according to  claim 16 , wherein a bulk density of the first aerosol-generating substrate is less than 400 mg per cubic centimetre and a bulk density of the second aerosol-generating substrate is greater than 500 mg per cubic centimetre. 
     
     
         27 . The aerosol-generating article according to  claim 16 , further comprising an upstream element provided upstream of the aerosol-generating rod and abutting an upstream end of the second aerosol-generating segment. 
     
     
         28 . The aerosol-generating article according to  claim 16 ,
 further comprising a downstream section provided downstream of the aerosol-generating rod and extending to the downstream end of the aerosol-generating article,   wherein the downstream section comprises a hollow tubular cooling element.   
     
     
         29 . The aerosol-generating article according to  claim 16 , wherein the aerosol-generating article has a ventilation level of at least 40 percent. 
     
     
         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 the aerosol-generating article and at least a heating element provided at or about a periphery of the heating chamber.