Aerosol-generating substrate comprising an aerosol-generating film

Patent metadata

Field	Value
Publication number	US-12471619-B2
Application number	US-202017602114-A
Country	US
Kind code	B2
Filing date	Mar 18, 2020
Priority date	Apr 8, 2019
Publication date	Nov 18, 2025
Grant date	Nov 18, 2025

Abstract

An aerosol-generating article including a rod of aerosol-generating substrate is provided, the rod including: an aerosol-generating film comprising at least 25 percent by weight of a polyhydric alcohol and at least 10 percent by weight of a cellulose based film-forming agent, the aerosol-generating film being configured such that an exposed surface area of the aerosol-generating film within the aerosol-generating substrate is at least 5 square millimeters per mg of the aerosol-generating film, and the aerosol-generating film being substantially tobacco-free. A rod for use as an aerosol-generating substrate in an aerosol-generating article, and an aerosol-generating system including an aerosol aerosol-generating article and an electrically operated aerosol-generating device are also provided.

First claim

The invention claimed is:

1 . An aerosol-generating article comprising a rod of aerosol-generating substrate, wherein the rod of aerosol-generating substrate comprises:
an aerosol-generating film comprising at least 25 percent by weight of a polyhydric alcohol and at least 10 percent by weight of a cellulose based film-forming agent, wherein the aerosol-generating film is configured such that an exposed surface area of the aerosol-generating film within the aerosol-generating substrate is at least 5 square millimeters per mg of the aerosol-generating film, wherein the aerosol-generating film is substantially tobacco-free, and wherein the cellulose based film-forming agent is selected from the group consisting of hydroxypropyl methylcellulose (HPMC), methylcellulose (MC), ethylcellulose (EC), hydroxyethyl methyl cellulose (HEMC), hydroxyethyl cellulose (HEC), hydroxypropyl cellulose (HPC), and combinations thereof.

2 . An aerosol-generating article comprising a rod of aerosol-generating substrate, wherein the rod of aerosol-generating substrate comprises:
an aerosol-generating film comprising at least 25 percent by weight of a polyhydric alcohol and at least 10 percent by weight of a cellulose based film-forming agent, wherein the aerosol-generating film is configured such that a bulk density of the aerosol-generating film is at least 100 mg per cubic centimeter of the rod of aerosol-generating substrate, wherein the aerosol-generating film is substantially tobacco-free, and wherein the cellulose based film-forming agent is selected from the group consisting of hydroxypropyl methylcellulose (HPMC), methylcellulose (MC), ethylcellulose (EC), hydroxyethyl methyl cellulose (HEMC), hydroxyethyl cellulose (HEC), hydroxypropyl cellulose (HPC), and combinations thereof.

3 . The aerosol-generating article according to claim 1 , wherein the rod of aerosol-generating substrate comprises a plurality of stacked layers of the aerosol-generating film.

4 . The aerosol-generating article according to claim 3 , wherein the plurality of layers of the aerosol-generating film are stacked such that each layer extends in a transverse direction of the aerosol-generating article.

5 . The aerosol-generating article according to claim 3 , wherein the plurality of layers of the aerosol-generating film are stacked such that each layer extends in a longitudinal direction of the aerosol-generating article.

6 . The aerosol-generating article according to claim 3 ,
wherein the aerosol-generating substrate comprises a tubular carrier element defining a longitudinally extending internal channel, and wherein the plurality of stacked layers is provided within the internal channel.

7 . The aerosol-generating article according to claim 3 , wherein the plurality of stacked layers of the aerosol-generating film comprises between 2 and 50 stacked layers.

8 . The aerosol-generating article according to claim 2 , wherein the rod of aerosol-generating substrate comprises a plurality of stacked layers of the aerosol-generating film.

9 . The aerosol-generating article according to claim 8 , wherein the plurality of layers of the aerosol-generating film are stacked such that each layer extends in a transverse direction of the aerosol-generating article.

10 . The aerosol-generating article according to claim 8 , wherein the plurality of layers of the aerosol-generating film are stacked such that each layer extends in a longitudinal direction of the aerosol-generating article.

11 . The aerosol-generating article according to claim 8 ,
wherein the aerosol-generating substrate comprises a tubular carrier element defining a longitudinally extending internal channel, and wherein the plurality of stacked layers is provided within the internal channel.

12 . The aerosol-generating article according to claim 8 , wherein the plurality of stacked layers of the aerosol-generating film comprises between 2 and 50 stacked layers.

13 . The aerosol-generating article according to claim 1 , wherein the rod of aerosol-generating substrate comprises one or more gathered layers of the aerosol-generating film.

14 . The aerosol-generating article according to claim 1 , wherein the rod of aerosol-generating substrate comprises a plurality of strips of the aerosol-generating film.

15 . The aerosol-generating article according to claim 1 , wherein a thickness of the aerosol-generating film is between 0.1 millimeter and 0.5 millimeter.

16 . The aerosol-generating article according to claim 1 , wherein the aerosol-generating film is textured or crimped.

17 . The aerosol-generating article according to claim 1 , wherein the aerosol-generating film is provided on at least one surface of a carrier layer or a paper layer.

18 . A rod for use as an aerosol-generating substrate in an aerosol-generating article, the rod comprising:
an aerosol-generating film comprising at least 25 percent by weight of a polyhydric alcohol and at least 10 percent by weight of a cellulosic film-forming agent, wherein the aerosol-generating film is configured such that an exposed surface area of the aerosol-generating film within the aerosol-generating substrate is at least 5 square millimeters per mg of the aerosol-generating film, wherein the aerosol-generating film is substantially tobacco-free, and wherein the cellulosic film-forming agent is selected from the group consisting of hydroxypropyl methylcellulose (HPMC), methylcellulose (MC), ethylcellulose (EC), hydroxyethyl methyl cellulose (HEMC), hydroxyethyl cellulose (HEC), hydroxypropyl cellulose (HPC), and combinations thereof.

19 . A rod for use as an aerosol-generating substrate in an aerosol-generating article, the rod comprising:
an aerosol-generating film comprising at least 25 percent by weight of a polyhydric alcohol and at least 10 percent by weight of a cellulose based film-forming agent, wherein the aerosol-generating film is configured such that a bulk density of the aerosol-generating film is at least 100 mg per cubic centimeter of the rod of aerosol-generating substrate, wherein the aerosol-generating film is substantially tobacco-free, and wherein the cellulose based film-forming agent is selected from the group consisting of hydroxypropyl methylcellulose (HPMC), methylcellulose (MC), ethylcellulose (EC), hydroxyethyl methyl cellulose (HEMC), hydroxyethyl cellulose (HEC), hydroxypropyl cellulose (HPC), and combinations thereof.

20 . An aerosol-generating system comprising an aerosol aerosol-generating article and an electrically operated aerosol-generating device comprising a heater element configured to heat an aerosol-generating substrate of the aerosol-generating article, wherein:
the aerosol-generating article comprises a rod of aerosol-generating substrate according to claim 18 , and wherein the heater element is a heater blade or a heater pin configured to be inserted into the rod of aerosol-generating substrate in order to heat the aerosol-generating film.

21 . The aerosol-generating article according to claim 1 , wherein the aerosol-generating film comprises no more than 26 percent by weight of the cellulose based film-forming agent.

22 . The aerosol-generating article according to claim 2 , wherein the aerosol-generating film comprises no more than 26 percent by weight of the cellulose based film-forming agent.

Assignees

• Philip Morris Products Sa

Inventors

• Capelli Sebastien
• Dayioglu Onur
• Emmett Robert
• VOLLMER Jean-Yves

Classifications

• A24D1/18

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

• A24B15/32

  by acyclic compounds · CPC title

• A24D1/20 Primary

  Cigarettes specially adapted for simulated smoking devices · CPC title

• A24F40/20

  Devices using solid inhalable precursors · CPC title

• A24F40/46

  Shape or structure of electric heating means · CPC title