US 12,433,327 B2
Aerosol-generating article having a plurality of air ingress zones
Guillaume Bastien Baur, Genolier (CH); Daniele Sanna, Marin-Epagnier (CH); and Jerome Uthurry, Neuchatel (CH)
Assigned to Philip Morris Products S.A., Neuchatel (CH)
Appl. No. 17/905,734
Filed by Philip Morris Products S.A., Neuchatel (CH)
PCT Filed Mar. 12, 2021, PCT No. PCT/EP2021/056410
§ 371(c)(1), (2) Date Sep. 6, 2022,
PCT Pub. No. WO2021/180962, PCT Pub. Date Sep. 16, 2021.
Claims priority of application No. 20162842 (EP), filed on Mar. 12, 2020.
Prior Publication US 2023/0114313 A1, Apr. 13, 2023
Int. Cl. A24D 1/20 (2020.01); A24D 3/04 (2006.01); A24D 3/17 (2020.01); A24F 40/20 (2020.01); A24F 40/46 (2020.01); A24F 40/485 (2020.01)
CPC A24D 1/20 (2020.01) [A24D 3/043 (2013.01); A24D 3/17 (2020.01); A24F 40/485 (2020.01); A24F 40/20 (2020.01); A24F 40/46 (2020.01)] 17 Claims
OG exemplary drawing
 
1. An aerosol-generating article for producing an aerosol upon heating, the aerosol-generating article comprising:
a rod of aerosol-forming substrate;
a filter positioned downstream of the rod of aerosol-forming substrate,
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 an ingress of air into an interior of the aerosol-generating article,
wherein the first air ingress zone comprises a substantially porous portion of the wrapper, the substantially porous portion having a porosity of at least 3000 Coresta Units,
wherein a width of the first air ingress zone is at least 3 mm, and
wherein a level of air ingress into the interior of the aerosol-generating article through the first air ingress zone is configured to be greater than a level of air ingress into the interior of the aerosol-generating article through the second air ingress zone.