Aerosol generation

Abstract

An aerosol-generating composition in the form of an amorphous solid. The amorphous solid includes an aerosol-former material; a gelling agent; optionally a filler; optionally an active substance; and tobacco material. An article for use with a non-combustible aerosol provision devices, can include the aerosol generating composition.

1 . An aerosol-generating composition comprising:
 an amorphous solid comprising:   aerosol-former material in an amount of from about 40 to 80 wt% of the amorphous solid;   gelling agent;   optionally, filler, wherein the amount of gelling agent and filler taken together is from about 10 to 60 wt% of the amorphous solid; and   optionally, active substance in an amount of up to about 20 wt% of the amorphous solid; and   tobacco material;   wherein the aerosol-generating composition has an aerosol-former material content of from about 5 to 30 wt% of the aerosol-generating composition, these weights being calculated on a dry weight basis.   
     
     
         2 . The aerosol-generating composition according to  claim 1 , wherein the aerosol-former content is from about 10 to 20 wt% of the of the aerosol-generating composition. 
     
     
         3 . The aerosol-generating composition according to  claim 1  , wherein the amorphous solid is comprised in the aerosol-generating composition in an amount of from about 5 to 40 wt% of the aerosol-generating composition. 
     
     
         4 . The aerosol-generating composition according to ]  claim 1 , wherein the filler is comprised in the amorphous solid in an amount of from about 1 to 15 wt% of the amorphous solid or wherein the amorphous solid does not comprise filler. 
     
     
         5 . (canceled) 
     
     
         6 . The aerosol-generating composition according to  claim 1 , wherein the aerosol-former material is comprised in the amorphous solid in an amount of from 50 to 70 wt% of the amorphous solid, and optionally wherein the aerosol aerosol-former material comprises glycerol. 
     
     
         7 . The aerosol-generating composition according to  claim 1 , wherein the gelling agent is comprised in the amorphous solid in an amount of from about 5 to 50 wt% of the amorphous solid, optionally wherein the gelling agent comprises alginate and/or pectin and/or guar gum, and optionally wherein the alginate is present in an amount of at least 50 wt% of the gelling agent. 
     
     
         8 - 12 . (canceled) 
     
     
         13 . The aerosol-generating composition according to  claim 1 , wherein the tobacco material is fine-cut. 
     
     
         14 . The aerosol-generating composition according to  claim 1  , wherein the tobacco material comprises lamina tobacco, optionally wherein the tobacco material comprises lamina tobacco in an amount of at least about 60 wt% of the tobacco material, preferably at least about 95 wt% of the tobacco material. 
     
     
         15 - 17 . (canceled) 
     
     
         18 . The aerosol-generating composition according to  claim 1  , wherein the tobacco material comprises less than 1 wt% reconstituted tobacco, preferably wherein the tobacco material substantially does not comprise reconstituted tobacco. 
     
     
         19 . (canceled) 
     
     
         20 . The aerosol-generating composition according to  claim 1  , wherein the tobacco material comprises cut rag tobacco, preferably in an amount of at least 90wt% of the tobacco material. 
     
     
         21 . (canceled) 
     
     
         22 . The aerosol-generating composition according to  claim 1 , wherein the tobacco material comprises aerosol-former material in an amount of from 1 to 10wt% of the tobacco material. 
     
     
         23 . The aerosol-generating composition according to  claim 1 , wherein the amorphous solid is a shredded sheet, preferably wherein the shredded sheet of amorphous solid is blended with the tobacco material. 
     
     
         24 . (canceled) 
     
     
         25 . The aerosol-generating composition according to  claim 23  , wherein the tobacco material comprises cut rag tobacco having a cut width, and the amorphous solid shredded sheet has a cut width, the cut width of the amorphous solid being from about 90 to 110% of the cut width of the cut rag tobacco and/or wherein the tobacco material has an area density, and the amorphous solid has an area density, the area density of the amorphous solid being from about 90 to 110% of the area density of the tobacco material. 
     
     
         26 . (canceled) 
     
     
         27 . An article for use with a non-combustible aerosol provision device, the article comprising the aerosol-generating composition according to  claim 1 , optionally wherein the tobacco material is in the form of a substantially cylindrical rod and the amorphous solid is in sheet form, and the sheet of amorphous solid circumscribes the rod of tobacco material. 
     
     
         28 - 30 . (canceled) 
     
     
         31 . A non-combustible aerosol provision system comprising an article according to  claim 27  and a non-combustible aerosol provision device, wherein the non-combustible aerosol provision device is configured to generate aerosol from the article when the article is used with the non-combustible aerosol provision device, preferably wherein the non-combustible aerosol provision device comprises a heater configured to heat but not burn the article. 
     
     
         32 . (canceled) 
     
     
         33 . A method of making an aerosol-generating composition, the method comprising:
 providing an amorphous solid comprising:
 aerosol-former material in an amount of from about 40 to 80 wt% of the amorphous solid; 
 gelling agent; 
 optionally, filler, wherein the amount of gelling agent and filler taken together is from about 10 to 60 wt% of the amorphous solid; and 
 optionally, active substance in an amount of up to about 20 wt% of the amorphous solid; 
   providing tobacco material; and   combining the amorphous solid and tobacco material to provide the aerosol-generating composition, the aerosol-generating composition having an aerosol-former content of from about 5 to 30 wt% of the aerosol-generating composition, weights being calculated on a dry weight basis.   
     
     
         34 . The method according to  claim 33 , wherein the providing the amorphous solid comprises:
 providing a slurry comprising gelling agent, aerosol-former material, optionally filler, and optionally active substance;   forming a layer of the slurry;   setting the slurry to form a gel; and   drying the gel to form the amorphous solid.   
     
     
         35 . The method according to  claim 34 , wherein the setting comprises supplying a setting agent to the slurry, preferably wherein the supplying the setting agent comprises spraying the setting agent onto a surface of the slurry, and optionally wherein the setting agent comprises calcium formate. 
     
     
         36 - 41 . (canceled) 
     
     
         42 . A method of generating an aerosol using a non-combustible aerosol provision system according to  claim 31  , the method comprising heating the aerosol-generating composition to a temperature of less than 350° C. 
     
     
         43 . Use of the non-combustible aerosol provision system according to  claim 31 .