Aerosol generation

Abstract

Described herein is an aerosol generating substrate comprising an aerosol generating material. The aerosol generating material comprises an amorphous solid which comprises 1-60 wt % of a gelling agent, 5-80 wt % of an aerosol generating agent and optionally 0.1-60 wt % of at least one active substance and/or flavorant (dry weight basis). The amorphous solid comprises from about 1 wt % to about 15 wt % water, calculated on a wet weight basis.

1 . An aerosol generating substrate comprising an aerosol generating material, the aerosol generating material comprising an amorphous solid, wherein the amorphous solid comprises from about 1 wt % to about 15 wt % water, calculated on a wet weight basis. 
     
     
         2 . The aerosol generating substrate according to  claim 1 , wherein the amorphous solid comprises:
 1-60 wt % of a gelling agent; and   5-80 wt % of an aerosol generating agent;   and optionally, 0.1-60 wt % of at least one active substance and/or flavorant;   
       wherein these weights are calculated on a dry weight basis. 
     
     
         3 . The aerosol generating substrate according to  claim 1 , comprising from about 7 wt % to about 13 wt % of water (WWB). 
     
     
         4 . The aerosol generating substrate according to  claim 1 , further comprising a carrier on which the amorphous solid is provided. 
     
     
         5 . The aerosol generating substrate according to  claim 4 , wherein the carrier is formed from materials selected from: metal foil, paper, carbon paper, greaseproof paper, ceramic, carbon allotropes, plastic, cardboard, wood or combinations thereof; or wherein the carrier comprises a tobacco material. 
     
     
         6 . The aerosol generating substrate according to  claim 4 , wherein the carrier is formed from or comprises metal foil. 
     
     
         7 . The aerosol generating substrate according to  claim 6 , wherein the metal foil is configured to function as a susceptor in an induction heating system. 
     
     
         8 . The aerosol generating substrate according to  claim 4 , wherein
 (A) the carrier is a laminate structure, or   (B) the carrier comprises paper, or   (C) the carrier is a paper-backed foil, or   (D) the carrier comprises a metal foil layer and a support layer, or   (E) the carrier comprises a metal foil layer and a cardboard support layer.   
     
     
         9 . The aerosol generating substrate according to  claim 4 , wherein the carrier has a surface abutting the amorphous solid and a surface facing away from the amorphous solid that is suitable for contacting a heater. 
     
     
         10 . The aerosol generating substrate according to  claim 4 , wherein the carrier has a thickness in the range of about 10 μm to about 2.5 mm. 
     
     
         11 . The aerosol generating substrate according to  claim 4 , wherein the amorphous solid has a thickness of about 0.015 mm to about 1.0 mm. 
     
     
         12 . The aerosol generating substrate according to  claim 1 , wherein
 (A) the amorphous solid comprises a gelling agent selected from pectins, alginates and mixtures thereof, or   (B) the amorphous solid comprises an aerosol generating agent selected from erythritol, propylene glycol, glycerol and mixtures thereof, or   (C) the amorphous solid comprises nicotine, or   (D) the amorphous solid comprises tobacco extract, or   (E) the aerosol generating substrate does not comprise tobacco fibers, or   (F) wherein the amorphous solid comprises powdered tobacco.   
     
     
         13 . The aerosol generating substrate according to  claim 1 , wherein the aerosol generating substrate does not comprise fibrous material. 
     
     
         14 . The aerosol generating substrate of  claim 1 , wherein the amorphous solid comprises no tobacco material but does comprise nicotine. 
     
     
         15 . The aerosol generating substrate of  claim 14 , wherein the aerosol generating material consists of the amorphous solid. 
     
     
         16 . The aerosol generating substrate of  claim 15 , wherein the amorphous solid is in the form of a shredded sheet. 
     
     
         17 . An aerosol generating article for use in an aerosol generating assembly, the article comprising an aerosol generating substrate according to  claim 1 . 
     
     
         18 . The aerosol generating article according to  claim 17 , further comprising a cooling element, or further comprising ventilation apertures. 
     
     
         19 . An aerosol generating assembly comprising an aerosol generating substrate according to  claim 1  and a heater configured to heat but not burn the aerosol generating substrate. 
     
     
         20 . The aerosol generating assembly according to  claim 19 , wherein:
 (A) the assembly comprises an integrated aerosol generating article and heater, or   (B) a surface of the amorphous solid directly abuts the heater.   
     
     
         21 . A method of making an aerosol generating substrate according to  claim 1 . 
     
     
         22 . An aerosol generating article for use in an aerosol generating assembly, the article comprising an aerosol generating substrate comprising an aerosol generating material, the aerosol generating material comprising an amorphous solid, wherein the amorphous solid comprises gelling agent and one or more flavorants, the one or more flavorants being present in an amount of from 1 wt % to 80 wt % of the amorphous solid by dry weight,
 and wherein the amorphous solid comprises from about 1 wt % to about 15 wt % water, calculated on a wet weight basis.   
     
     
         23 . The aerosol generating article according to  claim 22 , wherein the one or more flavorants comprise menthol and wherein the one or more flavorants are present in an amount of from 5 wt % to 80 wt % of the amorphous solid by dry weight. 
     
     
         24 . The aerosol generating article of  claim 23 , wherein the one or more flavorants consists of menthol.