Aerosol generation

Abstract

An aerosol generating article for use in an aerosol generating assembly, the aerosol generating article including an aerosol generating substrate having an aerosol generating material, wherein the aerosol generating material is solid and includes a starch and a plasticizer, wherein the amount of plasticizer is from about 5% to 70% by weight of the starch.

1 . An aerosol generating article for use in an aerosol generating assembly, the article comprising an aerosol generating substrate comprising an aerosol generating material, wherein the aerosol generating material is solid and comprises a starch and a plasticizer, wherein the amount of plasticizer is from about 5% to 70% by weight of the starch. 
     
     
         2 . The aerosol generating article according to  claim 1 , wherein the amount of plasticizer is from about 20% to 50% by weight of the starch. 
     
     
         3 . The aerosol generating article according to  claim 1 , wherein the aerosol generating material further comprises a tobacco material. 
     
     
         4 . The aerosol generating article according to  claim 3 , wherein the tobacco material comprises a powdered tobacco material having a particle size of less than about 250 μm. 
     
     
         5 . The aerosol generating article according to  claim 3 , wherein the tobacco material comprises a tobacco extract. 
     
     
         6 . The aerosol generating article according to  claim 1 , wherein the plasticizer is selected from erythritol, sorbitol, glycerol, glycols such as propylene glycol, monohydric alcohols, high boiling point hydrocarbons, lactic acid, diacetin, triacetin, triethylene glycol diacetate, triethyl citrate, ethyl myristate, isopropyl myristate, methyl stearate, dimethyl dodecanedioate and dimethyl tetradecanedioate. 
     
     
         7 . The aerosol generating article according to  claim 1 , wherein the starch comprises potato starch. 
     
     
         8 . The aerosol generating article according to  claim 1 , wherein the solid aerosol generating material is formed as a sheet. 
     
     
         9 . The aerosol generating article according to  claim 1 , wherein the aerosol generating material has a mass per unit area of 80-120 g/m 2 . 
     
     
         10 . The aerosol generating article according to  claim 1 , wherein the aerosol generating substrate comprises a carrier on which the aerosol generating material is provided. 
     
     
         11 . An aerosol generating assembly comprising the aerosol generating article according  claim 1  and a heater configured to heat the aerosol generating material without burning the aerosol generating material. 
     
     
         12 . A starch matrix material comprising;
 a plasticizer wherein the amount of plasticizer is from about 5% to 70% by weight of the starch; and   a plant-derived flavor or aroma component.   
     
     
         13 . A kit comprising the aerosol generating article according to  claim 1  and a device which is configured to receive the article in use, the device comprising a heater which is configured to heat the aerosol generating material without burning the aerosol generating material during use. 
     
     
         14 . A method of making the aerosol generating article of  claim 1 , the method comprising;
 (i) mixing the constituent parts of the aerosol generating material in a slurry, heating and stirring the slurry to effect gelation, casting the gel and drying by heating to form the aerosol generating material; and   (ii) incorporating the aerosol generating material in the aerosol generating article.   
     
     
         15 . A slurry comprising:
 a starch;   a plasticizer wherein the amount of plasticizer is from about 5% to 70% by weight of the starch; and   a plant-derived flavor or aroma component; and   water, wherein a weight ratio of water to a total weight of other ingredients is between about 10:1 and 20:1.   
     
     
         16 . A slurry comprising:
 a starch;   a plasticizer, wherein the amount of plasticizer is from about 5% to 70% by weight of the starch;   a powdered tobacco material having a mean particle diameter of less than about 250 μm, wherein an amount of powdered tobacco material is from about 40% to 300% by weight of the starch; and   water, wherein a weight ratio of water to a total weight of other ingredients is between about 10:1 and 20:1.   
     
     
         17 . A slurry comprising:
 a starch;   a plasticizer, wherein an amount of plasticizer is from about 5% to 70% by weight of the starch; and   an aqueous tobacco extract, wherein a weight ratio of the aqueous tobacco extract to a total weight of other ingredients is between about 10:1 and 20:1.   
     
     
         18 . A smoking article comprising a wrapper, wherein the wrapper comprises a starch matrix and a plasticizer, wherein the amount of plasticizer is from about 5% to 30% by weight of the starch and wherein the smoking article is a combustible or a non-combustible smoking article. 
     
     
         19 . A filter for a smoking article, the filter comprising a starch matrix and a plasticizer, wherein the amount of plasticizer is from about 5% to 15% by weight of the starch and the smoking article is a combustible or non-combustible smoking article. 
     
     
         20 . A smoking article or aerosol generating article comprising the filter according to  claim 19 .