Aerosol-generating article and aerosol-generating system

Abstract

An aerosol-generating article according to various embodiments may comprise a first segment and a second segment disposed downstream of the first segment, wherein: nicotine is adsorbed onto the first segment and the second segment; and the amount of plasticizer per unit length included in the first segment may be equal to or greater than the amount of plasticizer per unit length included in the second segment.

1 . An aerosol-generating article comprising:
 a first segment; and   a second segment disposed downstream of the first segment,   wherein nicotine is adsorbed into the first segment or the second segment, and   an amount of a plasticizer per unit length comprised in the first segment is equal to or greater than an amount of a plasticizer per unit length comprised in the second segment.   
     
     
         2 . The aerosol-generating article of  claim 1 , wherein a same plasticizer is comprised in the first segment or the second segment. 
     
     
         3 . The aerosol-generating article of  claim 2 , wherein the plasticizer is selected from one of triacetin (TA) or triethyl citrate (TEC). 
     
     
         4 . The aerosol-generating article of  claim 3 , wherein the first segment or the second segment comprises a cellulose acetate filter. 
     
     
         5 . The aerosol-generating article of  claim 1 , further comprising:
 a medium segment disposed between the first segment and the second segment,   wherein the medium segment comprises a pH-treated tobacco medium, and the nicotine adsorbed into the first segment or the second segment is spread from the medium segment.   
     
     
         6 . The aerosol-generating article of  claim 5 , wherein the medium segment is pH-treated such a pH thereof is in a range of 7.0 to 9.5. 
     
     
         7 . The aerosol-generating article of  claim 1 ,
 wherein the first segment or the second segment is manufactured by cutting a filter portion to which free nicotine emitted from a medium raw material comprising nicotine is spread.   
     
     
         8 . An aerosol-generating system comprising:
 an aerosol-generating article; and   an aerosol-generating device comprising a controller comprising at least one processor,   an elongated empty space configured to receive the aerosol-generating article, and a vaporizer configured to generate an aerosol by heating a liquid composition and emit the aerosol toward the aerosol-generating article,   wherein the aerosol-generating article comprises:   a first segment; and   a second segment disposed downstream of the first segment,   wherein the first segment or the second segment comprises cellulose acetate into which nicotine is adsorbed and a plasticizer content per unit length comprised in the first segment is greater than or equal to a plasticizer content per unit length comprised in the second segment.   
     
     
         9 . The aerosol-generating system of  claim 8 ,
 wherein the aerosol-generating article further comprises a medium segment disposed between the first segment and the second segment,   the medium segment comprises a pH-treated tobacco medium, and   the nicotine adsorbed into the first segment or the second segment is spread from the medium segment.   
     
     
         10 . The aerosol-generating system of  claim 9 ,
 wherein the aerosol-generating device further comprises a heater for heating the first segment, the medium segment, or the second segment, and   the controller controls a temperature to heat the first segment, the medium segment, or the second segment.