Aerosol-generating article having a shredded tobacco substrate and an upstream element

Abstract

An aerosol-generating article is provided, including: a rod of aerosol-generating substrate having a length from 8 to 16 mm, the substrate including a shredded tobacco material having an average density from 150 to 500 mg/cm3 and being in a form of cut filler or a shredded sheet of homogenised tobacco material; a downstream section downstream of the rod and including at least one hollow tubular element abutting a downstream end of the rod; an upstream element provided upstream of the rod and abutting an upstream end of the rod, an upstream end of the upstream element defining an upstream end of the article; and a ventilation zone at a location along the hollow tubular element and being configured to admit ambient air into a lumen of the hollow tubular element, a distance between the ventilation zone and the upstream end of the upstream element being from 26 to 33 mm.

1 .- 15 . (canceled) 
     
     
         16 . An aerosol-generating article, comprising:
 a rod of aerosol-generating substrate having a length from 8 millimetres to 16 millimetres, the aerosol-generating substrate comprising a shredded tobacco material having an average density from 150 milligrams per cubic centimetre to 500 milligrams per cubic centimetre, the shredded tobacco material being in a form of cut filler or in a form of a shredded sheet of homogenised tobacco material;   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; and   a ventilation zone at a location along the hollow tubular element, the ventilation zone being configured to admit 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 the 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 10 millimetres to 14 millimetres. 
     
     
         19 . The aerosol-generating article according to  claim 16 , wherein the shredded tobacco material has an average density from 250 milligrams per cubic centimetre to 400 milligrams per cubic centimetre. 
     
     
         20 . The aerosol-generating article according to  claim 16 , further comprising a mouthpiece element provided at the downstream end of the aerosol-generating article, the mouthpiece element comprising at least one mouthpiece filter segment formed of a fibrous filtration material. 
     
     
         21 . The aerosol-generating article according to  claim 20 , 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 from 24 millimetres to 32 millimetres. 
     
     
         22 . The aerosol-generating article according to  claim 16 , wherein the upstream element comprises a hollow tubular segment having a central longitudinal cavity extending therethrough. 
     
     
         23 . The aerosol-generating article according to  claim 16 , wherein the upstream element has a length from 3 millimetres to 7 millimetres. 
     
     
         24 . The aerosol-generating article according to  claim 16 , wherein the rod of aerosol-generating substrate has a resistance-to-draw (RTD) of between 4 mmWG and 10 mmWG. 
     
     
         25 . The aerosol-generating article according to  claim 16 , wherein the hollow tubular element has a resistance-to-draw (RTD) of between 1 mmWG and 5 mmWG. 
     
     
         26 . The aerosol-generating article according to  claim 16 , wherein the upstream element has a resistance-to-draw (RTD) of between 0.5 mmWG and 3 mmWG. 
     
     
         27 . The aerosol-generating article according to  claim 16 , having an overall resistance-to-draw (RTD) from 17 mmWG to 23 mmWG. 
     
     
         28 . The aerosol-generating article according to  claim 16 ,
 wherein the aerosol-generating substrate further 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.   
     
     
         29 . The aerosol-generating article according to  claim 28 , wherein the content of aerosol former in the aerosol-forming substrate is at least 12 percent by weight, on a dry weight basis. 
     
     
         30 . The aerosol-generating article according to  claim 28 , 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.