Aerosol-generating article having a ventilated cavity and an upstream element

Abstract

An aerosol-generating article is provided, including: a rod of aerosol-generating substrate; a downstream section provided downstream of the rod of aerosol-generating substrate, the downstream section including at least one hollow tubular element abutting a downstream end of the rod of aerosol-generating substrate; an upstream element provided upstream of the rod of aerosol-generating substrate and abutting an upstream end of the rod of aerosol-generating substrate, an upstream end of the upstream element defining an upstream end of the aerosol-generating article, the upstream element having a length from 3 millimetres to 7 millimetres; and a ventilation zone at a location along the hollow tubular element, the ventilation zone configured to enable ingress of ambient air into a lumen of the hollow tubular element, and a distance between the ventilation zone and the upstream end of the upstream element being from 26 millimetres to 33 millimetres.

1 .- 15 . (canceled) 
     
     
         16 . An aerosol-generating article, comprising:
 a rod of aerosol-generating substrate;   a downstream section provided downstream of the rod of aerosol-generating substrate, the downstream section comprising at least one hollow tubular element abutting a downstream end of the rod of aerosol-generating substrate;   an upstream element provided upstream of the rod of aerosol-generating substrate and abutting an upstream end of the rod of aerosol-generating substrate, wherein an upstream end of the upstream element defines an upstream end of the aerosol-generating article, the upstream element having a length from 3 millimetres to 7 millimetres; and   a ventilation zone at a location along the hollow tubular element, the ventilation zone configured to enable ingress of ambient air into a lumen of the hollow tubular element, wherein a distance between the ventilation zone and the upstream end of the upstream element is from 26 millimetres to 33 millimetres.   
     
     
         17 . The aerosol-generating article according to  claim 16 , wherein a distance between the ventilation zone and the upstream end of the upstream element is from 27 millimetres to 31 millimetres. 
     
     
         18 . The aerosol-generating article according to  claim 16 , wherein the rod of aerosol-generating substrate has a length from 8 millimetres to 16 millimetres. 
     
     
         19 . The aerosol-generating article according to  claim 16 , wherein the hollow tubular element abuts an upstream end of the mouthpiece element, and a combined length of the hollow tubular element and the mouthpiece element is between 24 millimetres and 32 millimetres. 
     
     
         20 . The aerosol-generating article according to  claim 16 , wherein the upstream element comprises a hollow tubular segment having a central longitudinal cavity extending through it. 
     
     
         21 . The aerosol-generating article according to  claim 20 , wherein the hollow tubular segment of the upstream element has a wall thickness of less than or equal to 2 millimetres. 
     
     
         22 . The aerosol-generating article according to  claim 16 ,
 wherein the aerosol-generating substrate comprises one or more aerosol formers, and   wherein a content of aerosol former in the aerosol-forming substrate is at least 10 percent by weight, on a dry weight basis.   
     
     
         23 . The aerosol-generating article according to  claim 22 , wherein the content of aerosol former in the aerosol-forming substrate is less than or equal to 20 percent by weight, on a dry weight basis. 
     
     
         24 . The aerosol-generating article according to  claim 16 , wherein the rod of aerosol-generating substrate has a resistance-to-draw of between 4 mmWG and 10 mmWG. 
     
     
         25 . The aerosol-generating article according to  claim 16 , wherein the aerosol-generating substrate comprises a shredded tobacco material. 
     
     
         26 . The aerosol-generating article according to  claim 25 , wherein the shredded tobacco material has a density from 150 milligrams per cubic centimetre to 500 milligrams per cubic centimetre. 
     
     
         27 . The aerosol-generating article according to  claim 16 , further comprising a mouthpiece element at the downstream end of the aerosol-generating article. 
     
     
         28 . An aerosol-generating system, comprising:
 an aerosol-generating article according to  claim 16 ; and   an aerosol-generating device comprising a heating chamber configured to receive the aerosol-generating article and at least a heating element provided at or about a periphery of the heating chamber.   
     
     
         29 . The aerosol-generating system according to  claim 28 , wherein a length of the heating chamber is from 25 millimetres to 29 millimetres and a distance between the ventilation zone and the upstream end of the upstream element is greater than the length of the heating chamber. 
     
     
         30 . The aerosol-generating system according to  claim 28 , wherein a ratio between the distance between the ventilation zone and the upstream end of the upstream element and the length of the heating chamber is from 1.03 to 1.13.