Aerosol-generating article including first wrapper and second wrapper, and aerosol-generating system using the aerosol-generating article

Abstract

The resent disclosure relates to an aerosol-generating article including a first wrapper and a second wrapper, and an aerosol-generating system including the aerosol-generating article.

1 . An aerosol-generating article comprising:
 a first part including an aerosol-generating material;   a second part including a tobacco material;   a third part that cools air that has passed through the first part and the second part;   a fourth part including a filter material;   a first wrapper that wraps at least one of the first part and the second part; and   a second wrapper that wraps the first wrapper, the third part, and the fourth part,   wherein the first part, the second part, the third part, and the fourth part are sequentially arranged in a length direction of the aerosol-generating article.   
     
     
         2 . The aerosol-generating article of  claim 1 , wherein
 the first wrapper has a thickness of about 5 μm to about 30 μm, and   the second wrapper has a thickness of about 30 μm to about 70 μm.   
     
     
         3 . The aerosol-generating article of  claim 1 , wherein the first wrapper includes at least one of aluminum (Al), copper (Cu), zinc (Zn), gold (Au), silver (Ag), and iron (Fe), and the second wrapper includes cellulose. 
     
     
         4 . The aerosol-generating article of  claim 1 , wherein the first wrapper has an oil resistance of 5 or more based on a 3M KIT method and has a thermal conductivity of about 50 W·m −1 /K −1  to about 500 W·m −1 /K −1 . 
     
     
         5 . The aerosol-generating article of  claim 1 , wherein the first wrapper and the second wrapper have a combined tensile strength of about 4.5 kgf to about 10 kgf. 
     
     
         6 . An aerosol-generating system comprising:
 the aerosol-generating article of  claim 1 ; and   an aerosol-generating device configured to heat at least one of the first part and the second part of the aerosol-generating article.   
     
     
         7 . The aerosol-generating system of  claim 6 , wherein, when the aerosol-generating article is heated by using the aerosol-generating device, the second part has a maximum temperature in a range of about 180° C. to about 250° C. 
     
     
         8 . The aerosol-generating system of  claim 6 , wherein, when the aerosol-generating article is heated by using the aerosol-generating device, the second part is maintained at a temperature of 170° C. or higher after 120 seconds have passed from a start of heating. 
     
     
         9 . The aerosol-generating system of  claim 6 , wherein,
 each of the first part and the second part has a length of about 10 mm to about 14 mm, and   the aerosol-generating device is configured to heat both a portion of the first part and a portion of the second part.