Aerosol generating material comprising one or more foam forming agents

Abstract

The present invention relates to an aerosol-generating material; an aerosol-generating composition comprising the aerosol-generating material; a consumable comprising the aerosol-generating composition; a non-combustible aerosol provision system comprising the consumable and a method of forming the aerosol-generating material. The aerosol-generating material comprises: (i) one or more foam forming agents; (ii) filler; and (iii) aerosol-former material; wherein the aerosol-generating material is a foam; and wherein the aerosol-generating material has a density from about 0.02 g/cm3 to about 0.7 g/cm3.

1 . An aerosol-generating material comprising:
 (i) one or more foam forming agents;   (ii) filler; and   (iii) aerosol-former material;   wherein the aerosol-generating material is a foam; and   wherein the aerosol-generating material has a density from about 0.02 g/cm 3  to about 0.7 g/cm 3 .   
     
     
         2 . The aerosol-generating material according to  claim 1 , wherein the aerosol-generating material further comprises a foam stabilising agent. 
     
     
         3 . The aerosol-generating according to  claim 1 , wherein the aerosol-generating material comprises an effervescent agent. 
     
     
         4 . The aerosol-generating material according to  claim 1 , wherein the aerosol-generating material is porous. 
     
     
         5 . The aerosol-generating material according to  claim 1 , wherein the aerosol-generating material has a density from about 0.02 g/cm 3  to about 0.6 g/cm 3 . 
     
     
         6 . (canceled) 
     
     
         7 . (canceled) 
     
     
         8 . The aerosol-generating material according to  claim 1 , wherein the foam forming agent comprises hydroxypropyl methylcellulose (HPMC), guar gum, modified starch such as hydroxylated starch, maltodextrin, or mixtures thereof. 
     
     
         9 . The aerosol-generating material according to  claim 1 , wherein the foam forming agent comprises HPMC. 
     
     
         10 . (canceled) 
     
     
         11 . The aerosol-generating material according to  claim 1 , wherein the filler comprises wood pulp or a combination of wood pulp and calcium carbonate. 
     
     
         12 . (canceled) 
     
     
         13 . (canceled) 
     
     
         14 . (canceled) 
     
     
         15 . (canceled) 
     
     
         16 . (canceled) 
     
     
         17 . The aerosol-generating material according to  claim 1 , wherein the aerosol-generating material has a fill value of more than about 380 g/cm 3 . 
     
     
         18 . (canceled) 
     
     
         19 . The aerosol-generating material according to  claim 1 , wherein the aerosol-generating material has a Gurley porosity of about 100 s/100 mL or more. 
     
     
         20 . (canceled) 
     
     
         21 . (canceled) 
     
     
         22 . The aerosol-generating material according to  claim 2 , wherein the foam stabilising agent comprises one or more surfactants. 
     
     
         23 . The aerosol-generating material according to  claim 1 , wherein the aerosol-generating material comprises from about 1 to about 5 wt % foam stabilising agent. 
     
     
         24 . (canceled) 
     
     
         25 . The aerosol-generating material according to  claim 3 , wherein the effervescent agent comprises calcium carbonate, sodium carbonate, sodium bicarbonate, citric acid, tartaric acid, acetic acid, aluminium sulfate or mixtures thereof. 
     
     
         26 . The aerosol-generating material according to  claim 1 , wherein the aerosol-generating material is substantially free from tobacco. 
     
     
         27 . An aerosol-generating composition comprising the aerosol-generating material of  claim 1 . 
     
     
         28 . (canceled) 
     
     
         29 . (canceled) 
     
     
         30 . (canceled) 
     
     
         31 . (canceled) 
     
     
         32 . (canceled) 
     
     
         33 . (canceled) 
     
     
         34 . (canceled) 
     
     
         35 . A consumable for use in a non-combustible aerosol provision device, the consumable comprising the aerosol-generating composition of  claim 27 . 
     
     
         36 . A consumable for use in a combustible aerosol provision device, the consumable comprising the aerosol-generating composition of  claim 27 . 
     
     
         37 . A non-combustible aerosol provision system comprising the consumable of  claim 35  and a non-combustible aerosol provision device, the non-combustible aerosol provision device comprising an aerosol-generating device arranged to generate aerosol from the consumable when the consumable is used with the non-combustible aerosol provision device. 
     
     
         38 . A combustible aerosol provision system comprising the consumable of  claim 36  and a combustible aerosol provision device. 
     
     
         39 . A method of forming an aerosol-generating material, the method comprising:
 (a) providing a slurry comprising:
 (i) one or more foam forming agents; 
 (ii) filler; 
 (iii) aerosol-former material; and 
 (iv) solvent; 
   (b) aerating the slurry;   (c) forming a layer of the aerated slurry;   (d) drying the slurry to form the aerosol-generating material.   
     
     
         40 . The method according to  claim 39 , wherein step (b) comprises mixing the slurry under high shear conditions. 
     
     
         41 . (canceled) 
     
     
         42 . (canceled) 
     
     
         43 . A method of forming an aerosol-generating material, the method comprising:
 (a) providing a slurry comprising:
 (i) one or more foam forming agents; 
 (ii) filler; 
 (iii) an effervescent agent; 
 (iv) aerosol-former material; and 
 (v) solvent; 
   (b) forming a layer of the slurry;   (c) drying the slurry to form the aerosol-generating material.   
     
     
         44 . (canceled) 
     
     
         45 . (canceled)