Treated Tobacco

Abstract

The invention provides an aerosol generating material ( 8 ) for a smoking article ( 5 ), comprising particulate porous material impregnated with a diluent ( 3 ), wherein said particulate porous material has a BET specific surface area of at least 1200 m2/g. The invention also provides an aerosol generating material ( 8 ) for a smoking article ( 5 ), comprising particulate calcium carbonate ( 1 ) carrying and/or impregnated with a diluent ( 3 ).

1 . Treated tobacco for a smoking article, wherein the tobacco carries diluent and barrier material, wherein the diluent has been applied to the tobacco prior to or simultaneously with the barrier material, wherein the barrier material is substantially found external to the diluent. 
     
     
         2 . Treated tobacco as claimed in  claim 1 , wherein the diluent is in intimate contact with the tobacco. 
     
     
         3 . Treated tobacco as claimed in  claim 1 , wherein the barrier material comprises an alginate. 
     
     
         4 . Treated tobacco as claimed in  claim 1 , containing 1-10% by weight barrier material. 
     
     
         5 . Treated tobacco as claimed in  claim 1 , containing at least 0.05 g diluent per 100 g tobacco. 
     
     
         6 . Treated tobacco as claimed in  claim 1 , containing at least 5% by weight diluent. 
     
     
         7 . Treated tobacco as claimed in  claim 1 , wherein the diluent is triacetin. 
     
     
         8 . A smoking article containing a filter and treated tobacco wherein the tobacco carries diluent and barrier material, wherein the diluent has been applied to the tobacco prior to or simultaneously with the barrier material, wherein the barrier material is substantially found external to the diluent. 
     
     
         9 . A method of producing treated tobacco for a smoking article, comprising treating tobacco with a diluent prior to or simultaneously with treating the tobacco with a barrier material, wherein the barrier material is substantially found external to the diluent. 
     
     
         10 . The method as claimed in  claim 9 , wherein the diluent is applied to the tobacco prior to application of the barrier material. 
     
     
         11 . The method as claimed in  claim 9 , wherein the diluent is sprayed onto the tobacco. 
     
     
         12 . The method as claimed in  claim 9 , wherein the barrier material is sprayed onto the tobacco. 
     
     
         13 . Treated tobacco as claimed in  claim 1 , wherein the diluent is trielthyl citrate. 
     
     
         14 . Treated tobacco as claimed in  claim 1 , wherein the diluent is isopropyl myristate.