Aerosol-generating article with tilted perforation in ventilation zone

Abstract

An aerosol-generating article is provided, including: a rod of aerosol-generating substrate; and a ventilation zone including perforations and being arranged downstream of the rod, the perforations being arranged in a peripheral wall of the ventilation zone, each perforation having a central axis, the aerosol-generating article having a central axis, a smallest distance between the central axis of each perforation and the central axis of the aerosol-generating article being between 3% and 15% of an outer diameter of the aerosol-generating article, a thickness of the peripheral wall of the ventilation zone being between 0.1 millimeter and 2.5 millimeters, and the aerosol-generating article having a ventilation level of at least 20%. An aerosol-generating system including an aerosol-generating device having a cavity configured to receive the aerosol-generating article is also provided. A method for manufacturing an aerosol-generating article is also provided.

1 .- 16 . (canceled) 
     
     
         17 . An aerosol-generating article, comprising:
 a rod of aerosol-generating substrate; and   a ventilation zone comprising perforations, the ventilation zone being arranged downstream of the rod of aerosol-generating substrate,   wherein the perforations are arranged in a peripheral wall of the ventilation zone,   wherein each perforation has a central axis,   wherein the aerosol-generating article has a central axis,   wherein a smallest distance between the central axis of each perforation and the central axis of the aerosol-generating article is between 3% and 15% of an outer diameter of the aerosol-generating article,   wherein a thickness of the peripheral wall of the ventilation zone is between 0.1 millimeter and 2.5 millimeters, and   wherein the aerosol-generating article has a ventilation level of at least 20%.   
     
     
         18 . The aerosol-generating article according to  claim 17 , wherein the smallest distance between the central axis of each perforation and the central axis of the aerosol-generating article is between 4% and 13% of the outer diameter of the aerosol-generating article. 
     
     
         19 . The aerosol-generating article according to  claim 17 , wherein the smallest distance between the central axis of each perforation and the central axis of the aerosol-generating article is 6% of the outer diameter of the aerosol-generating article. 
     
     
         20 . The aerosol-generating article according to  claim 17 , wherein each central axis of each perforation is angled with respect to a radial direction of the aerosol-generating article by an angle of between 3° and 20°. 
     
     
         21 . The aerosol-generating article according to  claim 17 , wherein each central axis of each perforation is angled with respect to a radial direction of the aerosol-generating article by an angle of 7°. 
     
     
         22 . The aerosol-generating article according to  claim 17 ,
 wherein each perforation has a length measured along the central axis of the perforation, and   wherein one or more perforations have a length of at least 0.1 millimeter and 2.7 millimeters.   
     
     
         23 . The aerosol-generating article according to  claim 17 ,
 wherein each perforation has a length measured along the central axis of the perforation, and   wherein one or more perforations have a length of around 1.7 millimeter.   
     
     
         24 . The aerosol-generating article according to  claim 17 , wherein a cross-sectional shape of one or more of the perforations is unchanged along the central axis of the perforations. 
     
     
         25 . The aerosol-generating article according to  claim 17 , wherein one or more of the perforations has a non-circular cross-section. 
     
     
         26 . The aerosol-generating article according to  claim 17 , wherein one or more of the perforations are slit-shaped or have an oval cross-section. 
     
     
         27 . The aerosol-generating article according to  claim 17 , wherein between 10 perforations and 12 perforations are provided. 
     
     
         28 . The aerosol-generating article according to  claim 17 ,
 wherein the ventilation zone is arranged in a hollow tubular segment of an aerosol-cooling element, and   wherein the hollow tubular segment has an inner volume of between 130 mm 3  and 200 mm 3 .   
     
     
         29 . The aerosol-generating article according to  claim 17 ,
 wherein the ventilation zone is arranged in a hollow tubular segment of an aerosol-cooling element, and   wherein the hollow tubular segment has an inner volume of 170 mm 3 .   
     
     
         30 . The aerosol-generating article according to  claim 17 , wherein a distance between the perforations of the ventilation zone and a downstream end of the rod of aerosol-generating substrate is between 1 millimeter and 6 millimeters. 
     
     
         31 . The aerosol-generating article according to  claim 17 , wherein a distance between the perforations of the ventilation zone and a downstream end of the aerosol-generating article is between 10 millimeters and 26 millimeters. 
     
     
         32 . The aerosol-generating article according to  claim 31 , wherein a ratio of ambient air drawn into the ventilation zone through the perforations and air drawn into the ventilation zone through the rod of aerosol-generating substrate is between 5 percent and 75 percent. 
     
     
         33 . The aerosol-generating article according to  claim 17 ,
 further comprising a filter plug downstream of the ventilation zone,   wherein a resistance to draw of the filter plug is between 5 millimeters H 2 O and 80 millimeters H 2 O.   
     
     
         34 . The aerosol-generating article according to  claim 17 ,
 further comprising a substrate wrapper at least partly circumscribing the rod of aerosol-generating substrate,   wherein the substrate wrapper has a thickness of 50 micrometers or more.   
     
     
         35 . An aerosol-generating system comprising an aerosol-generating device having a cavity configured to receive the aerosol-generating article according to  claim 17 . 
     
     
         36 . A method for manufacturing an aerosol-generating article, the method comprising the steps of:
 providing a rod of aerosol-generating substrate;   providing a ventilation zone downstream of the rod of the aerosol-generating substrate; and   creating perforations in a peripheral wall of the ventilation zone,   wherein each perforation has a central axis,   wherein the aerosol-generating article has a central axis,   wherein a smallest distance between the central axis of each perforation and the central axis of the aerosol-generating article is between 3% and 15% of an outer diameter of the aerosol-generating article, and   wherein the aerosol-generating article has a ventilation level of at least 20%.