US-20260123665-A1 - Aerosol Generating Article Comprising a Plurality of Coatings and Associated Aerosol Generating Assembly

Abstract

An aerosol generating article configured to operate with an aerosol generating device includes a wrapper. The wrapper includes a plurality of coatings including thermochromic components able to change their appearance at different triggering temperatures Each coating is configured to present a message appearing/disappearing above the corresponding triggering temperature of that coating.

Inventors

• Jaakko Mcevoy
• Tilen Ceglar

Assignees

• JT INTERNATIONAL SA

Dates

Publication Date

20260507

Application Date

20231005

Priority Date

20221005

Claims (15)

1. 1 . An aerosol generating article configured to operate with an aerosol generating device and comprising a wrapper; the wrapper comprising a plurality of coatings comprising thermochromic components configured to change their appearance at different triggering temperatures; each coating presenting a message appearing/disappearing above the corresponding triggering temperature; wherein at least one message is relative to the operation of the aerosol generating device
2. 2 . The aerosol generating article according to claim 1 , wherein each message is relative to the operation of the aerosol generating device.
3. 3 . The aerosol generating article according to claim 1 , wherein at least one message shows that the aerosol generating device is defective.
4. 4 . The aerosol generating article according to claim 3 , wherein said message showing that the aerosol generating device is defective, appears when the temperature of the wrapper exceeds the corresponding triggering temperature, said triggering temperature being greater than the or each other triggering temperature.
5. 5 . The aerosol generating article according to claim 1 , wherein at least one message shows that the aerosol generating device is defective when it the at least one message appears without at least one other message.
6. 6 . The aerosol generating article according to claim 5 , wherein said message showing that the aerosol generating device is defective when said message appears without at least one other message, appears when the temperature of the wrapper exceeds the corresponding triggering temperature, said triggering temperature being less than the or each other triggering temperature.
7. 7 . The aerosol generating article according to claim 1 , wherein at least one message shows that the aerosol generating device operates normally.
8. 8 . The aerosol generating article according to claim 1 , wherein the plurality of coatings comprises at least three coatings comprising different thermochromic components configured to change their appearance at different triggering temperatures; at least two triggering temperatures being less than a setpoint temperature of a heater of the aerosol generating device according to a heating profile of the heater, and at least one triggering temperature being greater than said setpoint temperature.
9. 9 . The aerosol generating article according to claim 1 , wherein at least one message corresponds to: a manufacturer's logo disappearing above the corresponding triggering temperature; a recycling method of the article appearing above the corresponding triggering temperature; a message appearing when the aerosol generating article is ready for generating vapor; or a message showing an optimal temperature for each puff during a same vaping session.
10. 10 . The aerosol generating article according to claim 1 , wherein at least one thermochromic component is configured to reversibly change an appearance thereof.
11. 11 . The aerosol generating article according to claim 1 , wherein the triggering temperature of at least one thermochromic component is at most 10% lower than a setpoint temperature of a heater of the aerosol generating device according to a heating profile of the heater.
12. 12 . The aerosol generating article according to claim 1 , wherein at least one coating of the plurality of coatings presents a message invisible above a temperature value and another coating of the plurality of coatings presents a message visible above the same temperature value.
13. 13 . An aerosol generating assembly comprising: an aerosol generating article according to claim 1 ; and an aerosol generating device configured to operate with the aerosol generating article
14. 14 . The aerosol generating assembly according to claim 13 , wherein the aerosol generating device comprises a mouthpiece configured to receive at least partially the aerosol generating article the mouthpiece defining a window configured to face at least one message on the wrapper of the aerosol generating article
15. 15 . The aerosol generating assembly according to claim 14 , wherein at least one message on the wrapper of the aerosol generating article is configured to be aligned with the window when the aerosol generating article is correctly inserted in the mouthpiece.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS The present application is a national phase entry under 35 U.S.C. § 371 of International Application No. PCT/EP 2023/077583, filed Oct. 5, 2023, published in English, which claims priority to European Application No. 22199780.2, filed Oct. 5, 2022. FIELD OF THE INVENTION The present invention concerns an aerosol generating article. Particularly, the aerosol generating article according to the invention is configured to operate with an aerosol generating device, also known as a heat-not-burn device or HNB device. Such type of aerosol generating devices is adapted to heat, rather than burn, an aerosol generating substrate comprised in the article. The invention also concerns an aerosol generating assembly comprising such an article and such a device. BACKGROUND OF THE INVENTION The popularity and use of reduced-risk or modified-risk devices (also known as vaporisers or aerosol generating devices) has grown rapidly in the past few years as an aid to assist habitual smokers wishing to quit smoking traditional tobacco products such as cigarettes, cigars, cigarillos, and rolling tobacco. Various devices and systems are available that heat or warm vaporizable substances as opposed to burning tobacco in conventional tobacco products. A commonly available reduced-risk or modified-risk device is the heated substrate aerosol generation device or heat-not-burn device, also known as HNB device. Devices of this type generate aerosol or vapour by heating an aerosol generating substrate that typically comprises moist leaf tobacco or other suitable vaporizable material to a temperature typically in the range 150° C. to 350° C. Heating an aerosol generating substrate, but not combusting or burning it, releases aerosol that comprises the components sought by the user but not the toxic and carcinogenic by-products of combustion and burning. Furthermore, the aerosol produced by heating the tobacco or other vaporizable material does not typically comprise the burnt or bitter taste resulting from combustion and burning that can be unpleasant for the user and so the substrate does not therefore require the sugars and other additives that are typically added to such materials to make the smoke and/or vapour more palatable for the user. Some aerosol generating devices and/or articles provide additional information for the user relative for the example to the operation of the device, the health of the device and other features useful for the user while using the device together with the article. For this purpose, such type of devices and/or articles can for example comprise one or several sensors or other type of electronic means for monitoring the operation of the device and providing relative information or other type of useful information for the user. It is clear that these electronic means make the structure of the device/article more complex, its housing more cumbersome and increases its cost. SUMMARY OF THE INVENTION One of the aims of the present invention is to provide an aerosol generating article able to provide useful information to the user, without using special electronic means. For this purpose, the invention concerns an aerosol generating article configured to operate with an aerosol generating device and comprising a wrapper; the wrapper comprising a plurality of coatings comprising thermochromic components able to change their appearance at different triggering temperatures;each coating presenting a message appearing/disappearing above the corresponding triggering temperature. Thanks to these features, it is possible to configure the thermochromic components to make appear/disappear different messages to the user before, during and/or after a vaping session. These messages can present useful information for the user and their appearing/disappearing can be triggered by different temperatures under which the article is placed during the vaping session. According to some embodiments, at least one message, advantageously each message, is relative to the operation of the aerosol generating device. Thanks to these features, it is possible for the user to monitor the operation of the device and particularly, its heating profile which can be traced by different messages appearing/disappearing on the wrapper due to the plurality of coatings formed with different thermochromic components. According to some embodiments, at least one message shows that the aerosol generating device is defective. Thanks to these features, it is possible to detect easily a failure of the device. According to some embodiments, said message showing that the aerosol generating device is defective, appears when the temperature of the wrapper exceeds the corresponding triggering temperature, said triggering temperature being greater than the or each other triggering temperature. Thanks to these features, it is possible to detect a failure of the device consisting in overheating of the aerosol generating article