Novel aerosol-generating substrate

Abstract

An aerosol-generating substrate for a heated aerosol-generating article is provided, the aerosol-generating substrate including: homogenised tobacco material, the homogenised tobacco material including dried green tobacco material, an aerosol former, and a binder, the homogenised tobacco material having an aerosol former content of between 5 percent and 55 percent by weight on a dry weight basis. A dried green tobacco material for forming an aerosol-generating substrate for an aerosol-generating article, and a method of producing dried green tobacco material for the aerosol-generating substrate, are also provided.

1 .- 14 . (canceled) 
     
     
         15 . An aerosol-generating substrate for a heated aerosol-generating article, the aerosol-generating substrate comprising:
 homogenised tobacco material, the homogenised tobacco material comprising dried green tobacco material, an aerosol former, and a binder,   wherein the homogenised tobacco material has an aerosol former content of between percent and 55 percent by weight on a dry weight basis.   
     
     
         16 . The aerosol-generating substrate according to  claim 15 , wherein the homogenised tobacco material comprises at least one of:
 at least 0.1 milligrams of chlorophyll per gram, on a dry weight basis, and   no more than 2.5 milligrams of asparagine per gram, on a dry weight basis.   
     
     
         17 . The aerosol-generating substrate according to  claim 15 , wherein the homogenised tobacco material further comprises at least 10 percent by weight of the dried green tobacco material, on a dry weight basis. 
     
     
         18 . The aerosol-generating substrate according to  claim 15 , wherein the homogenised tobacco material further comprises at least 1 percent by weight of cured tobacco material, on a dry weight basis. 
     
     
         19 . The aerosol-generating substrate according to  claim 18 , wherein a ratio of dried green tobacco material to cured tobacco material in the homogenised tobacco material is no more than 1:1. 
     
     
         20 . The aerosol-generating substrate according to  claim 15 , wherein the homogenised tobacco material further comprises between 1 percent by weight and 10 percent by weight of the binder, on a dry weight basis. 
     
     
         21 . The aerosol-generating substrate according to  claim 15 , wherein the homogenised tobacco material is in the form of cast leaf. 
     
     
         22 . An aerosol-generating article comprising a rod of the aerosol-generating substrate according to  claim 15 . 
     
     
         23 . An aerosol-generating system, comprising:
 an aerosol-generating device comprising a heating element; and   an aerosol-generating article according to  claim 22 .   
     
     
         24 . A dried green tobacco material for forming an aerosol-generating substrate for an aerosol-generating article, the aerosol-generating substrate comprising homogenised tobacco material comprising dried green tobacco material, an aerosol former, and a binder, wherein the homogenised tobacco material has an aerosol former content of between 5 percent and 55 percent by weight on a dry weight basis. 
     
     
         25 . A method of producing dried green tobacco material for the aerosol-generating substrate according to  claim 15 , the method comprising:
 providing uncured green tobacco leaves;   drying the uncured green tobacco leaves until a moisture content of between 4 percent by weight and 15 percent by weight is achieved; and   cutting or grinding the uncured green tobacco leaves to produce dried green tobacco material,   wherein the drying step is performed by heating the uncured green tobacco leaves at a temperature of between 75 degrees Celsius and 120 degrees Celsius for no more than 7 hours, such that the dried green tobacco material retains a chlorophyll level of at least 0.5 milligrams per gram.   
     
     
         26 . The method according to  claim 25 , wherein the uncured green tobacco leaves are heated for no more than 4 hours. 
     
     
         27 . The method according to  claim 25 , wherein the drying step is performed in a tray dryer. 
     
     
         28 . A method of producing a homogenised tobacco material for the aerosol-forming substrate according  claim 15 , the method comprising:
 combining dried green tobacco material, an aerosol former, a binder, and water to form a slurry;   casting the slurry onto a surface to form a sheet of homogenised tobacco material; and   drying the sheet of homogenised tobacco material, wherein the sheet of homogenised tobacco material has an aerosol former content of between 5 percent by weight and 55 percent by weight, on a dry weight basis.