Aerosol-generating article and method for manufacturing such aerosol-generating article; aerosol-generating device and system

Abstract

An aerosol-generating article has a longitudinal extension and includes aerosol-generating substrate extending along the longitudinal extension and susceptor material extending along the longitudinal extension. The aerosol-forming substrate and the susceptor material form an extrudate having a same cross-sectional shape along a length of the extrudate. Additionally, an aerosol-generating device includes a device housing comprising a support element extending from a proximal end of the device housing. The support element is adapted for receiving an aerosol-generating article including aerosol-forming substrate and susceptor material. A mouthpiece of the device includes a cavity to accommodate the support element including aerosol-generating article mounted on the support element. An inductor may be inductively coupled to the susceptor material of the aerosol-generating article during use.

1 . A method for manufacturing an inductively heatable aerosol-generating article, the method comprising:
 coaxially extruding aerosol-forming substrate and susceptor material through a die opening of an extrusion device to form a hollow extrudate comprising the aerosol-forming substrate and the susceptor material.   
     
     
         2 . The method according to  claim 1 , further comprising coaxially extruding a continuous string material together with the aerosol-forming substrate and the susceptor material. 
     
     
         3 . The method according to  claim 2 , wherein the continuous string material is arranged radially outside of the susceptor material. 
     
     
         4 . The method according to  claim 2 , wherein the continuous string material is arranged between the susceptor material and the aerosol-forming substrate. 
     
     
         5 . The method according to  claim 2 , wherein the continuous string material comprises fibres. 
     
     
         6 . The method according to  claim 2 , wherein the continuous string material is a thread. 
     
     
         7 . The method according to  claim 2 , wherein the continuous string material has a tensile strength such that an elongation of the continuous string material is below 1 millimeter per meter under a load of 20 Newton. 
     
     
         8 . The method according to  claim 1 , wherein the susceptor material is a sheet-like material. 
     
     
         9 . The method according to  claim 1 , wherein the susceptor material comprises ferromagnetic material. 
     
     
         10 . The method according to  claim 1 , wherein the susceptor material is a hollow tube. 
     
     
         11 . The method according to  claim 1 , wherein the susceptor material is a continuous band. 
     
     
         12 . The method according to  claim 11 , wherein the continuous band is positioned helicoidally along an extrusion axis of the extrusion device. 
     
     
         13 . The method according to  claim 1 , wherein the hollow extrudate has a wall thickness between 1 millimeter and 7 millimeter. 
     
     
         14 . The method according to  claim 13 , wherein the wall of the hollow extrudate is a structured wall. 
     
     
         15 . The method according to  claim 14 , wherein the structured wall is a wavy wall. 
     
     
         16 . The method according to  claim 1 , further comprising covering the hollow extrudate at least partly with a cover material. 
     
     
         17 . The method according to  claim 16 , wherein the covering includes covering an inside or an outside of the hollow extrudate with the cover material or covering both the inside and the outside of the hollow extrudate with the cover material. 
     
     
         18 . The method according to  claim 16 , wherein the cover material is a porous material layer. 
     
     
         19 . The method according to  claim 1 , wherein the die opening of the extrusion device is formed in between an inner tube and an outer tube, the inner tube and the outer tube being coaxially arranged. 
     
     
         20 . The method according to  claim 19 , wherein a circumference of the inner tube and the outer tube describe a wavy line.