Aerosol-generating article having a plurality of air ingress zones

Abstract

An aerosol-generating article for producing an aerosol upon heating is provided, the aerosol-generating article including: a rod of aerosol-forming substrate; and a filter positioned downstream of the rod of aerosol-forming substrate, the filter including a hollow tubular segment, the rod of aerosol-forming substrate and the filter being assembled within a wrapper; and first and second air ingress zones located on the wrapper, the first and the second air ingress zones each being configured to allow ingress of air into an interior of the article, the first air ingress zone being located along the rod and the second air ingress zone being located along the hollow tubular segment. An aerosol-generating system including the aerosol-generating article and an aerosol-generating device is also provided.

1 .- 15 . (canceled) 
     
     
         16 . An aerosol-generating article for producing an aerosol upon heating, the aerosol-generating article comprising:
 a rod of aerosol-forming substrate; and   a filter positioned downstream of the rod of aerosol-forming substrate, the filter comprising a hollow tubular segment,   wherein the rod of aerosol-forming substrate and the filter are assembled within a wrapper; and   first and second air ingress zones located on the wrapper, the first and the second air ingress zones each being configured to allow ingress of air into an interior of the aerosol-generating article,   wherein the first air ingress zone is located along the rod of aerosol-forming substrate and the second air ingress zone is located along the hollow tubular segment.   
     
     
         17 . The aerosol-generating article according to  claim 16 ,
 wherein the filter of the aerosol-generating article comprises a mouthpiece segment comprising a plug of filtration material arranged downstream of the rod of aerosol-forming substrate, and   wherein the hollow tubular segment is located between the mouthpiece segment and the rod of aerosol-forming substrate.   
     
     
         18 . The aerosol-generating article according to  claim 17 , wherein the filter of the aerosol-generating article further comprises an aerosol-cooling element located between the mouthpiece segment and the hollow tubular segment. 
     
     
         19 . The aerosol-generating article according to  claim 16 , wherein the second air ingress zone is located at least 2 mm downstream of the first air ingress zone. 
     
     
         20 . The aerosol-generating article according to  claim 16 , wherein the second air ingress zone is located at least 12 mm downstream of the first air ingress zone. 
     
     
         21 . The aerosol-generating article according to  claim 16 , wherein the first air ingress zone is located at least 2 mm downstream of an upstream end of the rod of aerosol-forming substrate. 
     
     
         22 . The aerosol-generating article according to  claim 16 , wherein the second air ingress zone is located at least 2 mm downstream of an upstream end of the hollow tubular segment. 
     
     
         23 . The aerosol-generating article according to  claim 16 , wherein the first air ingress zone or the second air ingress zone comprises a substantially porous portion of the wrapper. 
     
     
         24 . The aerosol-generating article according to  claim 16 , wherein the first air ingress zone or the second air ingress zone comprises a plurality of apertures extending through the wrapper. 
     
     
         25 . The aerosol-generating article according to  claim 23 , wherein the first air ingress zone has a porosity of at least 3000 Coresta Units. 
     
     
         26 . The aerosol-generating article according to  claim 23 , wherein the first air ingress zone has a porosity of less than 25000 Coresta Units. 
     
     
         27 . The aerosol-generating article according to  claim 16 , wherein the wrapper of the aerosol-generating article comprises an air-impermeable material. 
     
     
         28 . An aerosol-generating system comprising an aerosol-generating article according to  claim 16  and an aerosol-generating device having a distal end and a mouth end, the aerosol-generating system further comprising:
 a housing defining a device cavity configured to removably receive the aerosol-generating article at the mouth end of the device; 
 a heater configured to heat the aerosol-forming substrate when the aerosol-generating article is received within the device cavity; and 
 an air-flow channel extending between a channel inlet and a channel outlet, the air-flow channel being configured to establish a fluid communication between the interior of the device cavity and an exterior of the aerosol-generating device, 
 wherein the aerosol-generating system is configured so that, when the aerosol-generating article is received within the device cavity, fluid communication between the interior of the aerosol-generating article and the exterior of the aerosol-generating device is established by a fluid communication being established between the first air ingress zone of the aerosol-generating article received within the device cavity and the air-flow channel of the aerosol-generating device.