Tobacco material comprising natural flavor material and method of preparing the same

Abstract

The disclosure relates to a tobacco material including a natural flavor material and a method of preparing the tobacco material. The tobacco material may have a core-shell structure in which a core includes a natural flavor material and is surrounded by a shell including a tobacco mixture, such that the aerosol generating article including the tobacco material generates a characteristic flavor.

1 . A tobacco material comprising:
 a core comprising a natural flavor material; and   a shell formed around the core and comprising a tobacco mixture,   wherein the tobacco mixture comprises tobacco particles and moisture.   
     
     
         2 . The tobacco material of  claim 1 , wherein the natural flavor material comprises an ingredient derived from a plant. 
     
     
         3 . The tobacco material of  claim 1 , wherein the natural flavor material comprises a freeze-dried fruit peel or a natural oil. 
     
     
         4 . The tobacco material of  claim 1 , wherein the tobacco material comprises 5.0 to 10.0 parts by weight of moisture with respect to 100 parts by weight of the total tobacco material. 
     
     
         5 . The tobacco material of  claim 1 , wherein the core has a diameter of 0.01 mm to 0.3 mm, and the shell has a diameter of 0.4 mm to 1.2 mm. 
     
     
         6 . The tobacco material of  claim 1 , wherein the tobacco material has a viscosity of 5 cps to 200 cps. 
     
     
         7 . The tobacco material of  claim 1 , wherein the tobacco material has a surface roughness of 0.1 to 10.0. 
     
     
         8 . A smoking article comprising:
 a tobacco rod comprising the tobacco material according to  claim 1 ; and   a filter segment.   
     
     
         9 . A method of preparing a tobacco material, the method comprising:
 a first operation of forming a core comprising a natural flavor material; and   a second operation of forming a shell surrounding the core.   
     
     
         10 . The method of  claim 9 , wherein the second operation comprises:
 placing the core in a chamber;   introducing a tobacco composition into the chamber; and   growing the tobacco composition around the core in the chamber under conditions of a temperature in a range of about 50° C. to about 90° C., and an air pressure less than or equal to about 1.5 bar.   
     
     
         11 . The method of  claim 10 , wherein the tobacco composition comprises tobacco powder in an amount of 40% to 70% by volume, and water in an amount of 30% to 60% by volume.