Tubular element for use with an aerosol generating article

Patent metadata

Field	Value
Publication number	US-12144369-B2
Application number	US-201917413348-A
Country	US
Kind code	B2
Filing date	Dec 16, 2019
Priority date	Dec 17, 2018
Publication date	Nov 19, 2024
Grant date	Nov 19, 2024

Abstract

A tubular element for an aerosol-generating article is provided, the tubular element including: a wrapper that forms a first longitudinal passageway; and a gel comprising an active agent, the wrapper including paper, the wrapper being water-resistant, the gel including an active agent including an aerosol former, and the gel including the active agent includes between 60 percent and 95 percent by weight of glycerol. An aerosol-generating article including a tubular element, and a method of manufacturing a tubular element, are also provided.

First claim

The invention claimed is:

1. A tubular element for an aerosol-generating article, the tubular element comprising:
a wrapper that forms a first longitudinal passageway; and
a gel comprising an active agent configured to release volatile compounds, the gel being within the first longitudinal passageway of the tubular element,
wherein the wrapper comprises paper,
wherein the wrapper is water-resistant,
wherein the gel comprises an active agent comprising an aerosol former,
wherein the gel comprising the active agent comprises between 60percent and 95 percent by weight of glycerol, and
wherein the gel has a viscosity of 10,000 Pascal-second to 1,000 Pascal-second.

2. The tubular element according to claim 1 , wherein the wrapper is hydrophobic.

3. The tubular element according to claim 2 , wherein the wrapper comprises hydrophobic groups covalently bonded to an inner surface of the wrapper.

4. The tubular element according to claim 2 , wherein the wrapper comprises hydrophobic groups covalently bonded to an outer surface of the wrapper.

5. The tubular element according to claim 2 , wherein the wrapper has a Cobb water absorption value (at 60 seconds) of less than 40 grams per square meter.

6. The tubular element according to claim 1 ,
wherein the tubular element further comprises a distal end and a proximal end, and
wherein an end plug is disposed at the distal end of the tubular element.

7. The tubular element according to claim 6 , wherein the end plug of the tubular element is impermeable to fluid.

8. The tubular element according to claim 1 , wherein the wrapper is stiff.

9. The tubular element according to claim 1 , wherein the tubular element further comprises a susceptor.

10. The tubular element according to claim 9 , wherein the susceptor is positioned longitudinally within the tubular element.

11. The tubular element according to claim 9 , wherein the susceptor is disposed adjacent to the gel.

12. The tubular element according to claim 1 , wherein the tubular element further comprises a sheet material.

13. The tubular element according to claim 12 , wherein the sheet material is crimped.

14. An aerosol-generating article comprising a tubular element as claimed in claim 1 .

15. A method of manufacturing a tubular element for an aerosol-generating article,
the tubular element comprising:
a wrapper that forms a first longitudinal passageway, and
a gel comprising an active agent configured to release volatile compounds,
wherein the active agent comprises an aerosol former,
wherein the active agent further comprises between 60 percent and 95 percent by weight of glycerol,
wherein the gel has a viscosity of 10,000 Pascal-second to 1,000 Pascal-second,
wherein the wrapper comprises paper, and
wherein the wrapper is water resistant; and

the method comprises the steps of:
placing a water-resistant wrapping material for the tubular element around a mandrel that forms the tubular element, and
extruding the gel from a conduit within the mandrel, such that the gel is within the first longitudinal passageway of the tubular element.

Assignees

• Philip Morris Products Sa

Inventors

• Campitelli Gennaro
• D'Ambra Gianpaolo
• Dayioglu Onur

Classifications

• A24D1/20 Primary

  Cigarettes specially adapted for simulated smoking devices · CPC title

• A24C5/01 Primary

  Making cigarettes for simulated smoking devices · CPC title

• A24F40/465

  specially adapted for induction heating · CPC title

• A24C5/1892

  with additives, e.g. binding agent, flavorants · CPC title

• A24D3/0204

  Preliminary operations before the filter rod forming process, e.g. crimping, blooming (A24D3/0275 takes precedence) · CPC title