Flat Tobacco Article Comprising at Least Two Layers and Aerosol Generating Device with Such an Article

Abstract

A flat-shaped tobacco article defines a pair of parallel outer surfaces, at least one of the outer surfaces being intended to be heated by a flat heater of an aerosol generating device; the flat-shaped tobacco article including: a substrate layer including tobacco substrate; and at least one retainer layer in contact with a side of the substrate layer and including an agent retainer impregnated with a vapour forming agent; the layers being arranged parallel to the outer surfaces.

1 . A flat-shaped tobacco article defining a pair of parallel outer surfaces, at least one of the outer surfaces heatable by a flat heater of an aerosol generating device;
 the flat-shaped tobacco article comprising:   a substrate layer comprising tobacco substrate;   at least one retainer layer in contact with a side of the substrate layer and comprising an agent retainer impregnated with a vapour forming agent, the at least one retainer layer comprising only agent retainer impregnated with vapour forming agent, the agent retainer not comprising any tobacco or nicotine containing substrate;   the substrate layer and the at least one retainer layer being arranged parallel to the outer surfaces.   
     
     
         2 . The flat-shaped tobacco article according to  claim 1 , wherein the agent retainer is at least one of:
 unwoven fabric;   cotton; or   paper.   
     
     
         3 . The flat-shaped tobacco article according to  claim 1 , wherein the vapour forming agent is at least one of:
 polyol;   glycol;   monohydric alcohols;   acid;   esters; or   any mixture thereof.   
     
     
         4 . The flat-shaped tobacco article according to  claim 1 , wherein the at least one retainer layer extends along the whole side of the substrate layer. 
     
     
         5 . The flat-shaped tobacco article according to  claim 1 , wherein the at least one retainer layer includes two retainer layers. 
     
     
         6 . The flat-shaped tobacco article according to  claim 5 , wherein the two retainer layers are in contact with either side of the substrate layer. 
     
     
         7 . The flat-shaped tobacco article according to  claim 5 , wherein the two retainer layers have different thicknesses. 
     
     
         8 . The flat-shaped tobacco article according to  claim 5 , wherein the two retainer layers comprise different vapour forming agents. 
     
     
         9 . The flat-shaped tobacco article according to  claim 8 , wherein sid the different vapour forming agents have a difference in response time while being heated, the vapour forming agents requiring different time to provide vapour generation. 
     
     
         10 . The flat-shaped tobacco article according to  claim 5 , wherein the two retainer layers comprise different agent retainers. 
     
     
         11 . The flat-shaped tobacco article according to  claim 1 , further comprising a filter part arranged in extension of the substrate layer and the at least one retainer layer. 
     
     
         12 . The flat-shaped tobacco article according to  claim 1 , further comprising a wrapper wrapping the substrate layer and the at least one retainer layer together. 
     
     
         13 . An aerosol generating assembly comprising:
 an aerosol generating device comprising a flat heater;   the flat-shaped tobacco article according to  claim 1  configured to be heated by the flat heater to generate aerosol.   
     
     
         14 . An-The aerosol generating assembly according to  claim 13 , wherein the at least one retainer layer are arranged to form different distances until the flat heater.