Flavour material with improved thermal release for an aerosol-generating article

Abstract

A flavour material for an aerosol-generating article is provided, a flavourant being releasable from the flavour material upon heating the flavour material, the flavour material including: a polysaccharide matrix structure; and a flavourant formulation dispersed within the polysaccharide matrix structure, the flavourant formulation being at least partly trapped within the polysaccharide matrix structure and releasable from the polysaccharide matrix structure upon heating of the flavour material; and greater than 0.1 weight percent carbon particles, the carbon particles having a volume mean particle size of greater than 10 micrometres.

1 .- 15 . (canceled) 
     
     
         16 . A flavour material for an aerosol-generating article, wherein a flavourant is releasable from the flavour material upon heating the flavour material, the flavour material comprising:
 a polysaccharide matrix structure; and   a flavourant formulation dispersed within the polysaccharide matrix structure, wherein the flavourant formulation is at least partly trapped within the polysaccharide matrix structure and releasable from the polysaccharide matrix structure upon heating of the flavour material; and   greater than 0.1 weight percent carbon particles, the carbon particles having a volume mean particle size of greater than 10 micrometres.   
     
     
         17 . The flavour material according to  claim 16 ,
 further comprising a carrier sheet material,   wherein the polysaccharide matrix structure and the flavourant formulation are supported by the carrier sheet material, and   wherein the carrier sheet material comprises the carbon particles.   
     
     
         18 . The flavour material according to  claim 17 , wherein the carrier sheet material is one of a sheet of homogenised tobacco material, a sheet of non-tobacco aerosol-generating material, and a paper wrapper material. 
     
     
         19 . The flavour material according to  claim 16 , wherein the polysaccharide matrix structure comprises gellan gum and an emulsifier. 
     
     
         20 . The flavour material according to  claim 19 , wherein the polysaccharide matrix structure comprises gellan gum as the sole polysaccharide or gellan gum in combination with at least a further polysaccharide selected from the group consisting of guar, tamarind gum, sodium alginate, xanthan gum, sodium carboxymethyl cellulose, and hydroxypropyl methyl cellulose. 
     
     
         21 . The flavour material according to  claim 20 , wherein the gellan gum makes up from 5 percent by weight to 99.9 percent by weight of the flavour material on a dry weight basis. 
     
     
         22 . The flavour material according to  claim 16 ,
 further comprising a polyol having the formula C n H 2n+2 O n ,   wherein the polyol is selected from the group consisting of glycerol, sorbitol, xylitol, mannitol, and erythritol or wherein the polyol makes up from 0.01 percent by weight to 20 percent by weight of the flavour material on a dry weight basis or both.   
     
     
         23 . The flavour material according to  claim 16 , wherein the carbon particles consist of one or more of: graphite particles, expanded graphite particles, and graphene particles. 
     
     
         24 . The flavour material according to  claim 16 , wherein the carbon particles have a volume mean particle size from 30 micrometres to 150 micrometres. 
     
     
         25 . The flavour material according to  claim 16 ,
 wherein the carbon particles have a particle size distribution with a D90 particle size and a D10 particles size, and   wherein the D90 particle size is no more than 25 times or 15 times the D10 particle size.   
     
     
         26 . The flavour material according to  claim 16 , wherein the carbon particles make up from 0.01 percent by weight to 10 percent by weight of the flavour material on a dry weight basis. 
     
     
         27 . The flavour material according to  claim 16 , further comprising fibres. 
     
     
         28 . The flavour material according to  claim 27 , wherein the fibres make up from 0.01 percent by weight to 10 percent by weight of the flavour material on a dry weight basis. 
     
     
         29 . An aerosol-generating article comprising a flavour material, wherein a flavourant is releasable from the flavour material upon heating the flavour material, the flavour material comprising:
 a polysaccharide matrix structure; and   a flavourant formulation dispersed within the polysaccharide matrix structure,   wherein the flavourant formulation is trapped within the polysaccharide matrix structure and releasable from the polysaccharide matrix structure upon heating of the flavour material, and   wherein the flavour material comprises greater than 0.1 weight percent carbon particles, the carbon particles having a volume mean particle size of greater than 10 micrometres.   
     
     
         30 . The aerosol-generating article according to  claim 29 ,
 wherein the flavour material further comprises a carrier sheet material,   wherein the polysaccharide matrix structure and the flavourant formulation are supported by the carrier sheet material, and   wherein the carrier sheet material comprises the carbon particles.   
     
     
         31 . The aerosol-generating article according to  claim 29 , further comprising:
 a rod of aerosol-generating substrate; and   a downstream section provided downstream of the rod of aerosol-generating substrate and extending to a mouth end of the aerosol-generating article.   
     
     
         32 . The aerosol-generating article according to  claim 31 ,
 further comprising an upstream section provided downstream of the rod of aerosol-generating substrate and extending to a distal end of the aerosol-generating article,   wherein the flavour material is provided in at least one of the rod of aerosol-generating substrate, the downstream section, and the upstream section.   
     
     
         33 . The aerosol-generating article according to  claim 30 ,
 wherein the carrier sheet material is a sheet of homogenised tobacco material,   wherein the aerosol-generating article further comprises:
 a rod of aerosol-generating substrate, and 
 a downstream section provided downstream of the rod of aerosol-generating substrate and extending to a mouth end of the aerosol-generating article, and 
   wherein the flavour material is provided in the rod of aerosol-generating substrate.   
     
     
         34 . The aerosol-generating article according to  claim 33 , wherein the aerosol-generating article further comprises an upstream section provided downstream of the rod of aerosol-generating substrate and extending to a distal end of the aerosol-generating article.