Aerosol generating material and devices including the same

Abstract

There is provided a solid aerosol generating material including about 5-35 wt % tobacco extract; about 50-80 wt % filler; about 10-35 wt % aerosol generating agent; and about 2.5-10 wt % binder; wherein weight percentage is calculated on a dry weight basis.

1 . A solid aerosol generating material comprising;
 about 5-35 wt % tobacco extract;   about 50-80 wt % filler;   about 10-35 wt % aerosol generating agent; and   about 2.5-10 wt % binder,   
       wherein weight percentage is calculated on a dry weight basis. 
     
     
         2 . The aerosol generating material according to  claim 1  in the form of a sheet. 
     
     
         3 . The aerosol generating material according to  claim 1 , wherein the filler is an organic material comprising at least one of wood pulp, cellulose or cellulose derivatives. 
     
     
         4 . The aerosol generating material according to  claim 3 , wherein the filler comprises chalk. 
     
     
         5 . The aerosol generating material according to  claim 1 , wherein the aerosol generating agent comprises at least one of:
 a polyol,   a monohydric alcohol,   a non-polyol high boiling point hydrocarbon,   an acid,   a glycerol derivative,   an ester, or   a mixture thereof.   
     
     
         6 . The aerosol generating material according to  claim 5 , wherein the aerosol generating agent comprises glycerol or propylene glycol. 
     
     
         7 . The aerosol generating material according to  claim 1 , wherein the binder comprises at least one of an alginate, a polysaccharide, a cellulose, a modified cellulose, a starch, a a modified starch, or a natural gum. 
     
     
         8 . The aerosol generating material according to  claim 7 , wherein the binder comprises an alginate, and wherein the alginate is at least one of sodium alginate, calcium alginate, potassium alginate or ammonium alginate. 
     
     
         9 . The aerosol generating material according to  claim 1 , wherein the aerosol generating material is a cast material. 
     
     
         10 . A component for aerosol generation by electrical heating, the component comprising an aerosol generating material according to  claim 1  and an electrically resistive heating element, wherein the electrically resistive heating element is at least partially embedded in the aerosol generating material. 
     
     
         11 . A device for generating an inhalable aerosol or gas, the device comprising an aerosol generating material according to  claim 1  and a heating means which volatilises components in use to form an aerosol or gas. 
     
     
         12 . The device according to  claim 11 , wherein the heating means is an electrical heating means. 
     
     
         13 . The device according to  claim 12 , wherein the electrical heating means is an electrically resistive heating element. 
     
     
         14 . The device according to  claim 11 , wherein the heating means is at least partially embedded in the aerosol generating material. 
     
     
         15 . The device according to  claim 11 , wherein the device is a tobacco heating product. 
     
     
         16 . A method of making an aerosol generating material comprising components including about 5-35 wt % tobacco extract, about 50-80 wt % filler, about 10-35 wt % aerosol generating agent, and about 2.5-10 wt % binder, wherein weight percentage is calculated on a dry weight basis, the method comprising:
 providing a slurry comprising the components of the aerosol generating material and water;   casting, extruding or spraying the slurry; and   drying the slurry to form the solid aerosol generating material.   
     
     
         17 . The method of making an aerosol generating material according to  claim 16  further comprising initially preparing the tobacco extract with a pH that exceeds about 6. 
     
     
         18 . The aerosol generating material according to  claim 1 , wherein the filler is an inorganic material comprising at least one of calcium carbonate, perlite, vermiculite, diatomaceous earth, colloidal silica, magnesium oxide, magnesium sulphate or magnesium carbonate. 
     
     
         19 . The aerosol generating material according to  claim 5 , wherein the aerosol generating agent comprises one or more of sorbitol, glycerol, propylene glycol, triethylene glycol, lactic acid, diacetin, triacetin, triethylene glycol diacetate, triethyl citrate, ethyl myristate, isopropyl myristate, methyl stearate, dimethyl dodecanedioate, dimethyl tetradecanedioate, or mixtures thereof. 
     
     
         20 . The aerosol generating material according to  claim 5 , wherein the aerosol generating agent comprises:
 sorbitol, glycerol, propylene glycol, triethylene glycol, or another polyol, or   diacetin, triacetin, triethylene glycol diacetate, triethyl citrate, ethyl myristate, isopropyl myristate, methyl stearate, dimethyl dodecanedioate, dimethyl tetradecanedioate, or another ester, or   a mixture thereof.