Aerosol-generating article with improved configuration

Patent metadata

Field	Value
Publication number	US-2023093519-A1
Application number	US-202117905024-A
Country	US
Kind code	A1
Filing date	Feb 24, 2021
Priority date	Feb 28, 2020
Publication date	Mar 23, 2023
Grant date	—

Abstract

An aerosol-generating article for producing an inhalable aerosol upon heating is provided, the article including: a rod of aerosol-generating substrate; a mouthpiece element having a length L1 and including at least one mouthpiece filter segment formed of a fibrous filtration material; and an intermediate hollow section between the rod and the mouthpiece element, the intermediate hollow section having a length L2 and including: an aerosol-cooling element downstream of the rod and including a hollow tubular segment defining a longitudinal cavity providing an unrestricted flow channel, a length of the aerosol-cooling element being less than 10 millimetres, and a support element between the aerosol-cooling element and the rod, in which an upstream end of the aerosol-cooling element abuts a downstream end of the support element, and in which the length L1 of the mouthpiece element is at least 0.4 times the length L2 of the intermediate hollow section.

First claim

1 .- 15 . (canceled)

16 . An aerosol-generating article for producing an inhalable aerosol upon heating, the aerosol-generating article comprising:
a rod of aerosol-generating substrate; a mouthpiece element having a length L1 and comprising at least one mouthpiece filter segment formed of a fibrous filtration material; and an intermediate hollow section between the rod of aerosol-generating substrate and the mouthpiece element, the intermediate hollow section having a length L2 and comprising:
an aerosol-cooling element downstream of the rod of aerosol-generating substrate, the aerosol-cooling element comprising a hollow tubular segment defining a longitudinal cavity providing an unrestricted flow channel, wherein a length of the aerosol-cooling element is less than 10 millimetres, and
a support element between the aerosol-cooling element and the rod of aerosol-generating substrate,
wherein an upstream end of the aerosol-cooling element abuts a downstream end of the support element, and wherein the length L1 of the mouthpiece element is at least 0.4 times the length L2 of the intermediate hollow section.

17 . The aerosol-generating article according to claim 16 , wherein the length L1 of the mouthpiece element is at least 0.6 times the length L2 of the intermediate hollow section.

18 . The aerosol-generating article according to claim 16 , wherein the length L1 of the mouthpiece element is at least 0.75 times the length L2 of the intermediate hollow section.

19 . The aerosol-generating article according to claim 16 , wherein the length L1 of the mouthpiece element is at least 2 millimetres greater than the length L2 of the aerosol-cooling element.

20 . The aerosol-generating article according to claim 16 , wherein the length L1 of the mouthpiece element is greater than 10 millimetres.

21 . The aerosol-generating article according to claim 16 , wherein the mouthpiece element further comprises a mouthpiece filter segment having a length that is at least 0.4 times the length L2 of the intermediate hollow section.

22 . The aerosol-generating article according to claim 16 , further comprising an upstream element provided upstream of the rod of aerosol-generating substrate.

23 . The aerosol-generating article according to claim 16 , wherein a resistance to draw (RTD) of the mouthpiece element is less than 15 millimetres H 2 O.

24 . The aerosol-generating article according to claim 16 , wherein the hollow tubular segment of the aerosol-cooling element has a wall thickness of less than 2.5 millimetres.

25 . The aerosol-generating article according to claim 16 , wherein the aerosol-cooling element further comprises a ventilation zone at a position along the hollow tubular segment.

26 . The aerosol-generating article according to claim 16 , wherein the rod of aerosol-generating substrate comprises a gel composition.

27 . The aerosol-generating article according to claim 16 , wherein the support element comprises a hollow tubular segment defining a longitudinal cavity providing an unrestricted flow channel.

28 . The aerosol-generating article according to claim 16 , wherein a length of the intermediate hollow section is no more than 18 millimetres.

29 . The aerosol-generating article according to claim 16 , wherein the aerosol-generating article has a total length of 45 millimetres.

Assignees

• Philip Morris Products Sa

Inventors

• Bertoldo Massimiliano
• D'Ambra Gianpaolo
• Minzoni Mirko
• Montanari Edoardo
• Prestia Ivan
• Schmidt Johann Friedrich
• Uthurry Jerome
• Nesovic Milica

Classifications

• A24F40/20

  Devices using solid inhalable precursors · CPC title

• A24D1/18

  Selection of materials, other than tobacco, suitable for smoking · CPC title

• A24B15/16

  of tobacco substitutes · CPC title

• A24D3/0279

  with tubes · CPC title

• A24C5/1885

  for cigarettes with an axial air duct · CPC title