Aerosol generating article and aerosol generating system including the same

Patent metadata

Field	Value
Publication number	US-12433326-B2
Application number	US-202117763059-A
Country	US
Kind code	B2
Filing date	Oct 18, 2021
Priority date	Oct 19, 2020
Publication date	Oct 7, 2025
Grant date	Oct 7, 2025

Abstract

An aerosol generating article includes: a first segment impregnated with a first liquid composition; a second segment impregnated with a second liquid composition that is different from the first liquid composition; a cooler configured to cool aerosol by allowing the aerosol, generated from the first segment or the second segment, to pass through the cooler; and a filter configured to filter the aerosol by allowing the aerosol having passed through the cooler to pass through the filter, wherein at least a portion of the filter is recessed to thereby form a cavity in the filter.

First claim

What is claimed is:

1. An aerosol generating article comprising:
a first segment impregnated with a first liquid composition;
a second segment impregnated with a second liquid composition that is different from the first liquid composition;
a cooler configured to cool aerosol by allowing the aerosol, generated from the first segment or the second segment, to pass through the cooler; and
a filter configured to filter the aerosol by allowing the aerosol having passed through the cooler to pass through the filter,
wherein at least a portion of the filter is recessed to thereby form a cavity in the filter,
wherein a wound paper sheet is filled in each of the first segment and the second segment, and
wherein a filling density of the sheet filled in the first segment is higher than the filling density of the sheet filled in the second segment.

2. The aerosol generating article of claim 1 , wherein each of the first liquid composition and the second liquid composition includes a tobacco extract.

3. The aerosol generating article of claim 2 , wherein the tobacco extract of the first liquid composition is nicotine salts, and
wherein the tobacco extract of the second liquid composition is freebase nicotine.

4. The aerosol generating article of claim 1 , wherein an amount of the first liquid composition impregnated in the first segment is less than an amount of the second liquid composition impregnated in the second segment.

5. The aerosol generating article of claim 1 , wherein the filter includes a flavor material adding a flavor to the aerosol having passed through the cooler.

6. The aerosol generating article of claim 1 , wherein the filter includes:
a first filter portion connected to the cooler and including cellulose acetate; and a second filter portion connected to the first filter portion, and
wherein at least a portion of the second filter portion is recessed in a direction toward the cooler to thereby form the cavity in the second filter portion.

7. The aerosol generating article of claim 6 , wherein the cavity extends in a longitudinal direction of the aerosol generating article, and a cross-sectional area of the cavity increases as the cavity extends in the longitudinal direction of the aerosol generating article.

8. The aerosol generating article of claim 6 , wherein the second filter portion includes a projector projecting from an inner surface of the second filter portion toward the cavity and changing circulation of the aerosol in the cavity.

9. An aerosol generating system comprising:
the aerosol generating article of claim 1 ; and
an aerosol generating device including an accommodation space configured to accommodate the aerosol generating article and a heating element configured to heat the aerosol generating article.

10. The aerosol generating system of claim 9 , wherein the heating element is configured to surround the first segment and the second segment when the aerosol generating article is inserted into the aerosol generating device.

11. The aerosol generating system of claim 9 , wherein a length of the heating element is less than a sum of a length of the first segment and a length of the second segment.

Assignees

• Kt & G Corp

Inventors

• Lee Tae Kyung
• Kwon Chan Min
• Jung Sun Hwan

Classifications

• A24D3/04

  Tobacco smoke filters characterised by their shape or structure · CPC title

• A24D3/061

  containing additives entrapped within capsules, sponge-like material or the like, for further release upon smoking · CPC title

• A24F40/50

  Control or monitoring · CPC title

• A24F40/46

  Shape or structure of electric heating means · CPC title

• A24F40/10

  Devices using liquid inhalable precursors · CPC title