Aerosol Generating Substrate and Article Containing the Substrate

Abstract

An aerosol generating substrate for a non-combustion aerosol generating device includes a first aerosol generating portion and at least one second aerosol generating portion positioned adjacent to the first aerosol generating portion. The first and second aerosol generating portions contain an aerosol generating agent, and respectively first and second flavourant(s) which are different from each other. At least one of the first and second aerosol generating portion is a foam containing non-tobacco flavourant. The foam is configured to produce aerosol upon heating. The foam is not meltable under conditions of aerosol generation at a temperature comprised within a heating temperature range of the aerosol generating device. The heating temperature range is between 180° C. and 350° C. The foam includes a foam-forming agent selected from the group consisting of agar, gellan gum, lecithin, polyglycerol esters of fatty acids, glycerol esters of fatty acids, sorbitan esters of fatty acids, and/or mixtures thereof.

1 . An aerosol generating substrate for a non-combustion aerosol generating device comprising:
 a first aerosol generating portion and at least one second aerosol generating portion positioned adjacent to the first aerosol generating portion, wherein the first and second aerosol generating portions contain an aerosol generating agent, and respectively first and second flavourants which are different from each other,   wherein at least one of the first and second aerosol generating portion is a foam containing non-tobacco flavourant and wherein the foam is configured to produce aerosol upon heating and wherein the foam is not meltable under conditions of aerosol generation at a temperature within a heating temperature range of the aerosol generating device and wherein the heating temperature range is between 180° C. and 350° C., and   wherein the foam comprises a foam-forming agent selected from the group consisting of agar, gellan gum, lecithin, polyglycerol esters of fatty acids, glycerol esters of fatty acids, sorbitan esters of fatty acids, and/or mixtures thereof.   
     
     
         2 . The aerosol generating substrate according to  claim 1 , wherein the heating temperature range is 200° C., and preferably 230 320° C. 
     
     
         3 . The aerosol generating substrate according to  claim 1 , wherein the first aerosol generating portion is a foam containing tobacco material and/or a non-tobacco flavouring agent. 
     
     
         4 . The aerosol generating substrate according to  claim 1 , wherein the first aerosol generating portion and at least one second aerosol generating portions are co-extrudates and/or concentrically arranged. 
     
     
         5 . The aerosol generating substrate according to  claim 1 , wherein the foam of the first and/or at least one second aerosol generating portions contained in the aerosol generating substrate comprises a foam stabilizing agent. 
     
     
         6 . The aerosol generating substrate according to  claim 4 , wherein the foam-stabilizing agent is selected from the group consisting of cellulose gum, hydroxyalkylated carbohydrates, derivatives thereof, and mixture thereof. 
     
     
         7 . The aerosol generating substrate according to  claim 6 , wherein the foam stabilizing agent comprises cellulose gum, or derivatives thereof and/or cellulose fiber. 
     
     
         8 . The aerosol Aerosol-generating substrate according to  claim 1 , wherein the aerosol forming agent in the first and/or at least one second portion is in an amount of at least 40 wt. %. 
     
     
         9 . The aerosol generating substrate according to  claim 1 , wherein the first aerosol generating portion contains tobacco powder. 
     
     
         10 . The aerosol generating substrate according to  claim 1 , wherein the second aerosol generating portion contains a non-tobacco flavouring agent selected amongst the list of: menthol, natural and/or artificial plant flavour, animal, enzymatic or microbiological origin flavour, sweet-like, alcoholic or dessert-like flavour and combinations thereof. 
     
     
         11 . The aerosol generating substrate according to  claim 1 , wherein the first and at least one second aerosol portion are in a coaxial arrangement such that upon heating, flavour release from the first and at least one second aerosol generating portion is adapted to be staggered time-wise. 
     
     
         12 . A heat-not-burn aerosol generating article comprising an aerosol generating substrate according to  claim 1 , wherein the substrate is wrapped by an outer wrapper. 
     
     
         13 . The heat-not-burn aerosol generating article of  claim 12 , it further comprising a filter and a spacing/cooling portion between the filter and the aerosol generating substrate. 
     
     
         14 . A method for producing an aerosol generating substrate for a non-combustion aerosol generating device comprising a first aerosol generating portion and at least one second aerosol generating portion positioned adjacent to the first aerosol generating portion, wherein the first and second aerosol generating portions contain an aerosol generating agent, and respectively first and second flavourants which are different from each other, wherein at least one of the first and second aerosol generating portion is a foam containing non-tobacco flavourant and wherein the foam is configured to produce aerosol upon heating and wherein the foam is not meltable under conditions of aerosol generation at a temperature within a heating temperature range of the aerosol generating device and wherein the heating temperature range is between 180° C. and 350° C., wherein the first and at least one second aerosol generating portion are coextruded. 
     
     
         15 . The aerosol generating substrate according to  claim 5 , wherein the foam-stabilizing agent is selected from the group consisting of cellulose gum, hydroxyalkylated carbohydrates, derivatives thereof, and mixture thereof. 
     
     
         16 . The aerosol generating substrate according to  claim 7 , wherein the foam stabilizing agent comprises carboxymethylcellulose (“CMC”). 
     
     
         17 . The aerosol generating substrate according to  claim 8 , wherein the aerosol forming agent in the first and/or at least one second portion comprises propylene glycol, glycerin or a combination thereof. 
     
     
         18 . The aerosol generating substrate according to  claim 1 , wherein the first aerosol generating portion contains a processed tobacco mixture or a tobacco foam. 
     
     
         19 . The aerosol generating substrate according to  claim 10 , wherein the dessert-like flavour includes one or more of chocolate, cookie dough, peanut butter, carrot cake, marshmallow, butter popcorn, prosecco, red wine, rum, jelly bean, Guinness, bourbon, honey, toffee, praline, butterfinger, or brown bread.