Tobacco rod, aerosol-generating article including the same, and aerosol generation device used therewith

Abstract

A tobacco rod, an aerosol-generating article including the same, and an aerosol generation device used with the aerosol-generating article are provided. The tobacco rod according to some embodiments of the present disclosure may include a first filter segment, a second filter segment disposed upstream of the first filter segment, and a cavity segment which is formed by the first filter segment and the second filter segment and filled with tobacco granules.

What is claimed is: 
     
         1 . A tobacco rod comprising:
 a first filter segment;   a second filter segment disposed upstream of the first filter segment; and   a cavity segment which is formed by the first filter segment and the second filter segment and filled with tobacco granules.   
     
     
         2 . The tobacco rod of  claim 1 , wherein both the first filter segment and the second filter segment are paper filters. 
     
     
         3 . The tobacco rod of  claim 1 , wherein:
 the first filter segment is a cellulose acetate filter; and   the second filter segment is a paper filter.   
     
     
         4 . The tobacco rod of  claim 1 , wherein a density of the tobacco granules is in a range of 0.5 g/cm 3  to 1.2 g/cm 3 . 
     
     
         5 . The tobacco rod of  claim 1 , wherein a diameter of the tobacco granules is in a range of 0.3 mm to 1.2 mm. 
     
     
         6 . The tobacco rod of  claim 1 , wherein a filling rate of the tobacco granules in the cavity segment is about 80 vol % or lower. 
     
     
         7 . The tobacco rod of  claim 1 , wherein resistance to draw of the first filter segment is in a range of 50 mmH 2 O/60 mm to 150 mmH 2 O/60 mm. 
     
     
         8 . The tobacco rod of  claim 1 , wherein:
 the first filter segment includes a paper material whose paper width is in a range of 100 mm to 200 mm; and   resistance to draw of the first filter segment is in a range of 50 mmH 2 O/60 mm to 100 mmH 2 O/60 mm.   
     
     
         9 . An aerosol-generating article that is used with an aerosol generation device, the aerosol-generating article comprising:
 a tobacco rod filled with tobacco granules; and   a filter rod,   wherein the tobacco rod includes a first filter segment, a second filter segment, and a cavity segment which is formed by the first filter segment and the second filter segment and filled with the tobacco granules.   
     
     
         10 . The aerosol-generating article of  claim 9 , wherein the filter rod includes:
 a cooling segment; and   a mouthpiece segment.