Cellulose acetate tow, filter including the same, and aerosol generating article including the filter

Abstract

One or more embodiments relate to a cellulose acetate tow, a filter including the same, and an aerosol generating article including the filter.

What is claimed is: 
     
         1 . An aerosol generating article comprising:
 a first portion including an aerosol generating material impregnated with an aerosol generating element;   a second portion including a tobacco element;   a third portion including a cooling element; and   a fourth portion including a filter element,   wherein the first portion, the second portion, the third portion, and the fourth portion are sequentially arranged in a longitudinal direction of the aerosol generating article, and   the filter element includes a cellulose acetate tow having a denier per filament of about 17 to about 29 and a total denier of about 10,000 to about 40,000.   
     
     
         2 . The aerosol generating article of  claim 1 , wherein the cellulose acetate tow has a denier per filament of about 18 to about 23 and a total denier of about 15,000 to about 35,000. 
     
     
         3 . The aerosol generating article of  claim 1 , wherein the fourth portion includes about 320 mg to about 510 mg of the cellulose acetate tow. 
     
     
         4 . The aerosol generating article of  claim 1 , wherein a circumference of a cross-section of the fourth portion, the cross-section being perpendicular to the longitudinal direction of the aerosol generating article, is about 14 mm to about 25 mm. 
     
     
         5 . The aerosol generating article of  claim 1 , wherein an absorption resistance of the fourth portion is about 0.5 mmH 2 O to about 2.5 mmH 2 O. 
     
     
         6 . The aerosol generating article of  claim 1 , wherein the second portion further includes the aerosol generating element, and
 the second portion includes the aerosol generating element in about 10 weight percent (wt %) or less with respect to a dry weight of the aerosol generating material.   
     
     
         7 . The aerosol generating article of  claim 1 , wherein the first portion includes the aerosol generating element in about 65 to about 95 weight percent (wt %) with respect to a dry weight of the aerosol generating material. 
     
     
         8 . A filter included in an aerosol generating article, the filter comprising:
 a cellulose acetate tow having a denier per filament of about 17 to about 29 and a total denier of about 10,000 to about 40,000.   
     
     
         9 . The filter of  claim 8 , wherein the cellulose acetate tow has a denier per filament of about 18 to about 23 and a total denier of about 15,000 to about 35,000. 
     
     
         10 . The filter of  claim 8 , wherein the filter includes about 350 mg to about 510 mg of the cellulose acetate tow. 
     
     
         11 . The filter of  claim 8 , wherein a circumference of a cross-section of the filter, the cross-section being perpendicular to a longitudinal direction of the filter, is about 14 mm to about 25 mm. 
     
     
         12 . The filter of  claim 8 , wherein an absorption resistance of the filter is about 0.5 mmH 2 O to about 2.5 mmH 2 O. 
     
     
         13 . A cellulose acetate tow having a denier per filament of about 17 to about 29 and a total denier of about 10,000 to about 40,000. 
     
     
         14 . The cellulose acetate tow of  claim 13 , wherein the cellulose acetate tow has a denier per filament of about 18 to about 23 and a total denier of about 15,000 to about 35,000.