Method of generating aerosol
AssigneeBritish American Tobacco (Investments) Limited
InventorsPablo Javier Ballesteros Gomez, Jeremy Phillips
Life of this patent
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Abstract
Provided herein is a method of generating aerosol from an aerosol-generating substrate using an aerosol-generating device with at least one heat source disposed to heat, but not burn, the aerosol-generating substrate in use. The aerosol-generating substrate has first and second portions having substantially the same composition, and/or has first and second portions and there is no physical separation between the portions. The method includes heating the aerosol-generating substrate in the aerosol-generating device, so that a temperature profile of the first portion of the aerosol-generating substrate during heating is different from a temperature profile of the second portion of the aerosol-generating substrate.
Claims18
A method of generating aerosol from an aerosol-generating substrate using an aerosol-generating device with at least one heat source disposed to heat, but not burn, the aerosol-generating substrate in use;
- wherein the aerosol-generating substrate comprises at least one of:
- a first portion and a second portion having substantially the same composition, or a first portion and a second portion and there is no physical separation between the first portion and the second portion;
- the method comprising:
- heating the aerosol-generating substrate in the aerosol-generating device over a period of time corresponding to a session of use, so that a temperature profile of the first portion of the aerosol-generating substrate during heating is different from a temperature profile of the second portion of the aerosol-generating substrate;
- wherein during a first part of the session, the first portion of the aerosol-generating substrate reaches a prescribed operating temperature and remains at that temperature for a sustained period, and the second portion reaches a first temperature which is lower than the temperature of the first portion, the first portion reaching the prescribed operating temperature more quickly than the second portion reaches the first temperature;
- wherein during a second part of the session, the second portion rises to a prescribed second temperature, and remains at that temperature for a sustained period;
- and
- wherein during a third part of the session, the second portion rises to a prescribed third temperature, and remains at that temperature for a sustained period, the third temperature being an operating temperature.
An aerosol-generating device comprising:
- a heating chamber having a first heating zone and a second heating zone disposed such that, when an aerosol-generating substrate comprising a first portion and a second portion are disposed within the heating chamber of the device, said first and second heating zones are disposed to heat, but not burn, the first and second portions of the aerosol-generating substrate, respectively;
- wherein the aerosol-generating device is configured such that in use a heating profile of the first heating zone is different from a heating profile of the second heating zone over a period of time corresponding to a session of use;
- wherein during a first part of the session, the first portion of the aerosol-generating substrate reaches a prescribed operating temperature and remains at that temperature for a sustained period, and the second portion reaches a first temperature which is lower than the temperature of the first portion, the first portion reaching the prescribed operating temperature more quickly than the second portion reaches the first temperature;
- wherein during a second part of the session, the second portion rises to a prescribed second temperature, and remains at that temperature for a sustained period;
- and
- wherein during a third part of the session, the second portion rises to a prescribed third temperature, and remains at that temperature for a sustained period, the third temperature being an operating temperature.
Dependencies are inferred from the claim text.