Multi-segment component for an aerosol-generating article

Patent metadata

Field	Value
Publication number	US-11096413-B2
Application number	US-201615757753-A
Country	US
Kind code	B2
Filing date	Sep 8, 2016
Priority date	Sep 11, 2015
Publication date	Aug 24, 2021
Grant date	Aug 24, 2021

Abstract

There is provided a multi-segment component for an aerosol generating article, the multi-segment component including a combustible heat source having at least one shaped recess on an outer surface thereof; an aerosol-forming substrate downstream of the combustible heat source; a wrapper circumscribing the combustible heat source along at least part of a length of the combustible heat source; and an inorganic glue located between the combustible heat source and the wrapper, the inorganic glue at least partially filling the at least one shaped recess.

First claim

The invention claimed is:

1. A multi-segment component for an aerosol generating article, the multi-segment component comprising:
a combustible heat source comprising at least one shaped recess on an outer surface thereof, and a rear portion having a substantially constant cross-section, the at least one shaped recess terminating at an upstream end of the rear portion;
an aerosol-forming substrate downstream of the combustible heat source;
a wrapper circumscribing the combustible heat source along at least part of a length of the combustible heat source; and
an inorganic glue located between the combustible heat source and the wrapper, the inorganic glue entirely filling the at least one shaped recess,
wherein a depth of the at least one shaped recess is less than about 10 percent of an outer diameter of the combustible heat source.

2. The multi-segment component according to claim 1 , wherein the at least one shaped recess comprises at least one longitudinal groove.

3. The multi-segment component according to claim 2 , wherein the at least one longitudinal groove comprises a plurality of circumferentially spaced apart longitudinal grooves.

4. The multi-segment component according to claim 1 , wherein the inorganic glue circumscribes the combustible heat source.

5. The multi-segment component according to claim 1 , wherein the wrapper comprises one or more layers of heat-conductive material.

6. The multi-segment component according to claim 1 , wherein the wrapper comprises one or more layers of heat-insulative material.

7. The multi-segment component according to claim 1 , wherein the wrapper circumscribes the aerosol-forming substrate along at least part of a length of the aerosol-forming substrate.

8. The multi-segment component according to claim 1 , wherein a depth of the at least one shaped recess is between about 0.05 mm and about 0.4 mm.

9. The multi-segment component according to claim 1 , wherein a depth of the at least one shaped recess decreases towards a downstream end.

10. The multi-segment component according to claim 1 , wherein the rear portion has a length of less than about 3 mm.

11. The multi-segment component according to claim 1 , wherein the rear portion has a length of from about 2 mm to about 3 mm.

12. The multi-segment component according to claim 1 , wherein radially outer edges of the at least one shaped recess are curved with a radius of curvature of at least about 0.05 mm.

13. The multi-segment component according to claim 1 , wherein an outer diameter of the combustible heat source is substantially constant along substantially an entire length of the combustible heat source.

14. An aerosol generating article comprising the multi-segment component according to claim 1 .

Assignees

• Philip Morris Products Sa

Inventors

• Malgat Alexandre
• Cattoni Michele Andrea
• Batista Rui Nuno

Classifications

• A24D1/02

  with special covers · CPC title

• A24F47/00

  Smokers' requisites not otherwise provided for · CPC title

• A24B15/165 Primary

  comprising as heat source a carbon fuel or an oxidized or thermally degraded carbonaceous fuel, e.g. carbohydrates, cellulosic material · CPC title

• A61M15/06

  Inhaling appliances shaped like cigars, cigarettes or pipes · CPC title

• C09J1/02

  containing water-soluble alkali silicates · CPC title