Aerosol-generating article having fibrous filter segment and hollow, tubular support element located immediately downstream the aerosol-forming substrate

Patent metadata

Field	Value
Publication number	US-11992041-B2
Application number	US-201816603397-A
Country	US
Kind code	B2
Filing date	Jun 8, 2018
Priority date	Jun 9, 2017
Publication date	May 28, 2024
Grant date	May 28, 2024

Abstract

A aerosol-generating article is provided, including a plurality of components assembled within a wrapper to form a rod having a mouth end and a distal end upstream from the mouth end, the plurality of components including: an aerosol-forming substrate comprising plant material and an aerosol former, the aerosol-forming substrate having an aerosol former content of between 5% and 30% by weight on a dry weight basis; and a filter segment downstream of the aerosol-forming substrate, the filter segment including fibres of at least about 12 denier per filament.

First claim

The invention claimed is:

1. An aerosol-generating article for generating an inhalable aerosol when heated, comprising:
a plurality of components assembled within a wrapper to form a rod having a mouth end and a distal end upstream from the mouth end, the plurality of components comprising:
an aerosol-forming substrate comprising plant material and an aerosol former, wherein the aerosol-forming substrate has an aerosol former content of between 5% and 30% by weight on a dry weight basis;
a filter segment downstream of the aerosol-forming substrate, the filter segment comprising fibres of at least 12 denier per filament, and wherein the filter segment has a total denier of from about 24,000 to about 60,000; and
a support element located immediately downstream of the aerosol-forming substrate, wherein the support element abuts the aerosol-forming substrate, and wherein the support element comprises a hollow tubular element.

2. The aerosol-generating article according to claim 1 , wherein a cavity is provided between the filter segment and the aerosol-forming substrate.

3. The aerosol-generating article according to claim 2 , wherein a ratio of a length of the aerosol-generating article to a length of the cavity is at least 3 to 1.

4. The aerosol-generating article according to claim 2 , wherein the cavity is defined by the wrapper.

5. The aerosol-generating article according to claim 1 , wherein the fibres of the filter segment have an elliptical or a circular cross section.

6. The aerosol-generating article according to claim 1 , wherein a length of the filter segment is at least about 10 percent of a length of the aerosol-generating article.

7. The aerosol-generating article according to claim 1 , wherein the filter segment comprises at least 50% by weight of fibres of at least 12 denier per filament.

8. The aerosol-generating article according to claim 1 , wherein the filter segment has a resistance to draw of from about 0.4 mm H 2 O to about 3 mm H 2 O per millimetre length.

9. The aerosol-generating article according to claim 1 , wherein the filter segment has a resistance to draw of from about 0.6 mm H 2 O to about 1.5 mm H 2 O per millimetre length.

10. The aerosol-generating article according to claim 1 , wherein the filter segment has a resistance to draw of from about 0.8 mm H 2 O to about 1.2 mm H 2 O per millimetre length.

Assignees

• Philip Morris Products Sa

Inventors

• Uthurry Jerome

Classifications

• A24D3/17 Primary

  Filters specially adapted for simulated smoking devices · CPC title

• A24D3/10

  of cellulose or cellulose derivatives · CPC title

• A24D3/14

  of organic materials as additive (of ion exchange materials A24D3/12) · CPC title

• A24F13/06

  with smoke filters (filters therefor A24D3/00) · CPC title

• D21H5/16

  Tobacco or cigarette paper · CPC title