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WO2025068279A1 - Récipient pour substrat de génération d'aérosol - Google Patents

Récipient pour substrat de génération d'aérosol Download PDF

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Publication number
WO2025068279A1
WO2025068279A1 PCT/EP2024/076922 EP2024076922W WO2025068279A1 WO 2025068279 A1 WO2025068279 A1 WO 2025068279A1 EP 2024076922 W EP2024076922 W EP 2024076922W WO 2025068279 A1 WO2025068279 A1 WO 2025068279A1
Authority
WO
WIPO (PCT)
Prior art keywords
aerosol generating
generating substrate
wall
substrate
container according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/EP2024/076922
Other languages
English (en)
Inventor
Jaakko MCEVOY
Tilen CEGLAR
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JT International SA
Original Assignee
JT International SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by JT International SA filed Critical JT International SA
Publication of WO2025068279A1 publication Critical patent/WO2025068279A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/50—Control or monitoring
    • A24F40/51—Arrangement of sensors
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
    • A24F40/42—Cartridges or containers for inhalable precursors
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/20—Devices using solid inhalable precursors

Definitions

  • reduced-risk or modified-risk devices also known as vaporizers
  • Various devices and systems are available that heat or warm, rather than burn, an aerosol generating substrate to generate an aerosol for inhalation by a user.
  • the present invention provides an aerosol generating system which addresses some or all of the above-mentioned needs.
  • an aerosol generating substrate container for an aerosol generating device comprising: a chamber configured and dimensioned to contain an aerosol generating substrate, the chamber comprising an opening which is configured to receive an aerosol generating substrate, and a wall extending from the opening, and a substrate detector configured to detect a deformation of the wall that is caused by an aerosol generating substrate, the substrate detector comprising a detection layer arranged on the wall and configured to deform together with the wall.
  • the detection layer is a strain gauge, preferably comprising and/or made of silver nano particles.
  • the solution brings down the cost of production.
  • the solution also guarantees that even a small variation on the wall can be detected and measured.
  • the solution makes it possible to measure the level of strain/deformation of the chamber, so that it also prevents incorrect detection.
  • the preferred material selected for this solution it makes the strain gauge easy to be deposit onto the chamber (which is typically made of a heat conductive material, e.g. metal).
  • the selection of the material also makes the strain gauge resistive to high temperatures.
  • the strain gauge is attached to or printed or deposited onto the wall.
  • the strain gauge has been printed or deposited onto the wall by means of a process of flexography, gravure, screen printing, inkjet printing sputter deposition, and/or aerosol jet printing.
  • a thermal insulation layer is arranged between the wall and the substrate detector.
  • the thermal insulation layer comprises or consists of a high temperature insulation material, preferably, a thermal insulation material that can withstand at least 350 °C, more preferably aluminum oxide, silicon dioxide, and/ or silicon nitride.
  • This arrangement protects the substrate detector, especially during the process of heating the substrate.
  • the wall has an internal surface on one side of the wall and an external surface on the other side of the wall, the internal surface is arranged to face the aerosol generating substrate when it is fully received in the container body, and the substrate detector is arranged on the external surface.
  • the wall comprises a first side wall, a second side wall and connection wall sections connecting the first and second side walls.
  • This arrangement makes the detection of the substrate more sensitive.
  • the aerosol generating substrate container is arranged in a way such that, when an aerosol generating substrate is received therein, a deformation takes place at, at least, the connection wall sections.
  • connection wall section protrudes into or out from the volume enclosed by the two side walls.
  • the aerosol generating substrate container further comprises a heater configured to heat an inserted substrate.
  • aerosol generating device may include an electronic cigarette configured to deliver an aerosol or vapor to a user, including an aerosol for smoking.
  • aerosol generating system in this invention are schematic, and it is also possible to combine some of the parts into single units, such as aerosol inlet and outlet, operator or computer modules, which is apparent to a person skilled in the art.
  • This internal space can for example receive a power source, such as a battery (e.g., a rechargeable battery which may be replaceable), for powering the device 12, a controller comprising electronic circuitry for, for example controlling the operation of the device 12, and an aerosol generating substrate container, which comprises a chamber (specifically, a heating chamber) 22 for receiving and containing the aerosol generating substrate 14.
  • a power source such as a battery (e.g., a rechargeable battery which may be replaceable)
  • a controller comprising electronic circuitry for, for example controlling the operation of the device 12, and an aerosol generating substrate container, which comprises a chamber (specifically, a heating chamber) 22 for receiving and containing the aerosol generating substrate 14.
  • the housing 20 may further comprise an air flow path and/ or air inlet for introduction of air into the chamber 22.
  • the chamber 22 is adapted to receive the aerosol generating substrate 14.
  • the chamber 22 may form a substantially cuboid shape extending along the device axis Y, complementary to the shape of the aerosol generating substrate 14.
  • the chamber 22 is dimensioned to contain the aerosol generating substrate 14.
  • the chamber 22 has a proximal end 24, a distal end 26, and a longitudinal axis extending between the proximal and distal ends 24, 26.
  • the longitudinal axis of the chamber 22 corresponds to the device axis Y.
  • the longitudinal axis is substantially parallel to the insertion direction of the aerosol generating substrate 14.
  • the wall has an external surface 28a, 30a, 44a and an internal surface 28b, 30b, 44b, which internal surface is on the side of the wall 28, 30, 44 which is opposite to the external surface 28a, 30a, 44a, and the internal surface faces an internal volume of the chamber 22.
  • the first and second internal surfaces 28b, 30b are arranged opposite each other and facing each other.
  • the aerosol generating device 12 comprises at least one heater 40.
  • the aerosol generating device 12 comprises two heaters 40, for example a first planer heater 40a and a second planer heater 40b, although in other (non-illustrated) examples, the heater 40 may comprises a single heater that extends (e.g., is wrapped) around the chamber 22.
  • the heater 40 may be arranged in contact with the external surface 28a, 30a of the corresponding first and second side walls 28, 30.
  • the heater 40 maybe substantially planner, and may comprises a thin film heater, such as a polyimide film heater, extending along substantially the total area of the external surfaces 28a, 30a or along only a part of the external surfaces 28a, 30a.
  • this part may have a width substantially equal to a width of the aerosol generating substrate 14.
  • the heater 40 is preferably a resistive heater that is powered by the power source and controlled by the controller of the aerosol generating device 12.
  • the aerosol generating device 12 may comprises a single heater 40 attached to just one of the external surfaces 28a, 30a of one of the first and second side walls 28, 30. With the heat-conductive material of the wall, the heat generated by the heater 40 can be conducted from the external surfaces 28a, 30a to the internal surface 28b, 30b.
  • the aerosol generating substrate 14 is intended to be heated by the heater(s) 40.
  • the aerosol generating substrate 14 is, for example, a flat-shaped cuboid extending along a substrate axis X and having external dimensions La x Wa x Da.
  • the length La of the aerosol generating substrate 14 according to the article axis X may be in a range from 20 to 45 mm, preferably from 25 to 40 mm, more preferably from 28 to 36 mm, for example 33 mm.
  • the width Wa may be in the range from 8 to 18 mm, preferably from 10 to 16 mm, more preferably from 10 to 14 mm, for example 12 mm.
  • the thickness Da may be in the range from 1 to 5 mm, preferably from 1 to 3 mm, more preferably from 1 to 2 mm, for example 1.4 mm. According to different examples, the values La, Wa and Da can be selected within a range of +/- 40%. According to other examples, the aerosol generating substrate 14 may have any other suitable flat shape and/or external dimensions.
  • the aerosol generating substrate 14 When positioned and contained in the chamber 22, the aerosol generating substrate 14 remains substantially flat.
  • the aerosol generating substrate 14 typically comprises an aerosol generating material such as tobacco.
  • the aerosol generating substrate 14 may be circumscribed by a wrapper 42 extending around the article axis X.
  • the wrapper 42 may, for example, comprise paper and/or non-woven fabric and/ or aluminum foil.
  • the wrapper 42 may be porous or air impermeable.
  • the major surfaces (the upper and lower surfaces in Figure 2) of the aerosol generating substrate 14 face and contact at least the internal surface 28b, 30b of the wall.
  • a distal end of the aerosol generating substrate 14 is typically positioned at the distal end 26 of the chamber 22.
  • the aerosol generating substrate 14 can be a cartridge-like container containing liquid for aerosol and having an outer casing made of, e.g., plastic and/or metal.
  • the di- mensions thereof can be similar or identical to the above embodiment’s aerosol generating substrate.
  • the embodiments of the aerosol generating substrate 14 being, for example, a flat-shaped cuboid is equally applicable to the embodiments of the aerosol generating substrate 14 being a liquid container.
  • the aerosol generating substrate container comprises a substrate detector (or deformation detector) 51.
  • the substrate detector 51 is arranged on the chamber 22.
  • the substrate detector 51 is configured to detect the aerosol generating substrate 14, specifically the presence/insertion/extraction of the aerosol generating substrate 14. More specifically, the substrate detector 51 is configured to detect a change, specifically a strain, deformation or displacement, of the wall 28, 30, 44 that is caused by the presence/insertion/ extraction of the aerosol generating substrate 14.
  • the substrate detector 51 is connected with the controller, so that once a deformation or displacement of the wall 28, 30, 44 is detected, the controller can recognize a presence/insertion/extraction of the substrate 14 and, for example, switch on the aerosol generating device 12 or activate a specific function of the device 12, such as heating.
  • the aerosol generating device 12 can recognize the presence of the aerosol generating substrate 14. Accordingly, the proper functioning of the aerosol generating device 12 is guaranteed in terms of safety, so that the lifespan of the aerosol generating device 12 is extended. It also maximizes the energy efficiency, as certain functions, e.g., heating, are triggered only when the aerosol generating substrate 14 is positioned or contained in the container.
  • this invention provides a detection layer (or detection film), which is comprised by the substrate detector 51, and is preferably configured to sense a change of the wall 28, 30, 44 of the chamber 22, specifically, an elastic deformation or displacement of the wall of the chamber 22.
  • the detection layer is arranged on the wall 28, 30, 44 in a way such that it can deform together with the wall 28, 30, 44.
  • the detection layer is arranged on an elastic area of the wall where the deformation takes place when the aerosol generating substrate 14 is inserted.
  • the detection layer is arranged on at least the connection wall section 44.
  • the detection layer is applied where the deformation takes place and is deformed together with the wall, even a minor deformation can be sensed and measured by the detection layer.
  • the detection layer can be disposed on the external surface 28a, 30a, 44a as shown in Figures 4a and 4b, or on the internal surface 28b, 30b, 44b of the chamber 22 (not shown).
  • the detection layer is thus utilized to determine the deformation and thus the force exerted on the wall by the aerosol substrate 14.
  • the detection layer is applied across the first side wall 28, the connection wall section 44, and the second side wall 30 in this order.
  • the detection layer is only applied on the connection wall section 44.
  • the detection layer is arranged on and across the connection wall section 44 and one of the first and second side walls 28, 30. This ensures that the force exerted on the wall is transferred to the detection layer.
  • the arrangement of the preferred embodiments ensures that the deformation is timely and accurately measured and that only a relatively small area on the wall 28, 30, 44 is needed for the detection layer.
  • This arrangement also makes it possible to recognize the insertion of the substrate 14 even when it just slightly enters the opening 36 of the chamber 22.
  • the controller can thus quickly determine the presence of the substrate 14, and the substrate detector 51 can be switched off right before the heating begins, which further protects the sensor from high temperature.
  • a thermal insulation layer 52 is arranged between the wall and the substrate detector 51.
  • the insulation layer 52 comprises or consists of a high temperature insulation material, preferably an insulation material that can withstand at least 350 °C, for example aluminum oxide, silicon dioxide, Kapton, and/or silicon nitride.
  • the insulation layer 52 protects the detector 51 from overheating.
  • the detection layer is a strain gauge, preferably comprising and/or made of silver nano particles.
  • Strain gauges are thin metal film sensors whose electrical resistance varies with applied force. The strain gauge measures the level of the deformation of the wall based on the change of the applied force or strain thereon.
  • the substrate detector 51 can easily detect a temporary deformation of the chamber’s shape. Therefore, even if, due to the time passing and frequent usage of the aerosol generating container, the shape thereof is permanently changed, the substrate detector 51 can still detect the presence of the aerosol generation substrate 14.
  • this configuration also offers the advantage of being able to measure the degree of the deformation precisely and accurately. Therefore, with the cooperation of the controller, the aerosol generating device 12 can determine the thickness of the aerosol generating substrate 14. This allows the aerosol generating device 12 to detect even a slight difference between different aerosol generating substrates 14.
  • a specific type or model of the aerosol generating substrate 14 can be recognized by the aerosol generating device 12 based on the thickness that is measured by the detection layer.
  • the strain gauge since the elastic deformation is only measured when the aerosol generating substate 14 is inserted into the heater, i.e., while the heater is at ambient temperature, the strain gauge does not need to operate at high temperatures. This also extends the work lifespan of the strain gauge. The strain gauge further brings the benefits of being inexpensive and small. As it is a veiy thin flat metal film, it can be easily attached to the chamber 22 without occupying further space inside the aerosol generating device 12.
  • connection wall sections 44 are configured to transition from the relaxed configuration to a loaded configuration through a transitioning configuration, or at least partially straighten out when an aerosol generating substrate 14 is inserted into the chamber 22 via the opening 36 as shown in Figures 6c and 6d.
  • the first and second side walls 28, 30 have been slightly pushed apart by the aerosol generating substrate 14 and are in a par- tially deflected position in which there is a second spacing S2 between the first and second heating surfaces 28b, 30b in the A-A line, where the substrate detector 51 is located.
  • the connection wall sections 44 when an outward force is applied to the first and second side walls 28, 30, the force is also applied to the connection wall sections 44.
  • this force causes a deformation structure to the connection wall sections 44 and the substrate detector 51.
  • the second spacing S2 is greater than the first spacing Si. Accordingly, the substrate detector 51 is in a partially loaded configuration, and a force is exerted on the substrate detector 51.
  • the substrate detector 51 is in a second form as shown in 6d, and continuously senses and measures the strain or the force exerted thereon. In the preferred embodiment, in which the substrate detector 51 is the strain gauge, the strain gauge senses the applied force and transmits the data generated accordingly to the controller.
  • the aerosol generating substrate 14 typically prevents the first and second side walls 28, 30 from returning to the resting position and, thus, a compression force F is applied to the major surfaces of the aerosol generating substrate 14.
  • the rounded- edge V-shape connection wall section 44 in Figure yd is the preferred embodiment is because it is easier to apply the substrate detector 51 on rounded corners, and it does not so easily break from wear and tear caused by continuous deformation. The measurement of the deformation is also more precise as the change is more linear.
  • the preferred shape and geometry may also be selected to optimize the airflow through the aerosol generating device 12 when an aerosol generating substrate 14 is positioned in the heating chamber 22, for example taking into account the increase or decrease in the cross-sectional area of the interior volume of the heating chamber 22 as the first and second chamber walls 28, 30 move from the resting position to the deflected position.
  • the substrate detector 51 is placed directly onto the thermal insulation layer 52.
  • the strain gauge (specifically the substrate carrier) is glued onto the surface of the wall 28, 30, 44 by using adhesive, e.g., X280 cold curing adhesive.
  • adhesive e.g., X280 cold curing adhesive.
  • the deposition is carried out by using a power of 275 W, an argon flux of 15 seem, and a sputter pressure of approximately 9.2 x io -3 mbar.
  • the sensor preferably comprises or is made of (specifically, fabricated by using) silver (Ag) nanoparticles (NPs).
  • the surface of the H-cement is treated with an atmospheric plasma to improve adhesion and ensure proper printing.
  • Sensor Printing printing the sensor material onto the thermal insulation layer 52, preferably using 3D printing, more preferably using aerosol Jet micro-additive printer.
  • the Aerosol Jet micro-additive printer is utilized to deposit silver nanoparticle ink onto the prepared substrate.
  • the printer's atomizer creates a mist of the ink solution, guided by a carrier gas, and focused to form a micro-jet that exits the nozzle.
  • the printing process involves multiple lateral passes to form individual electrodes using at least three layers of deposited ink.

Landscapes

  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)

Abstract

La présente invention concerne un récipient de substrat de génération d'aérosol pour un dispositif de génération d'aérosol (12), comprenant : une chambre (22) configurée et dimensionnée pour contenir un substrat de génération d'aérosol (14), la chambre (22) comprenant une ouverture (36) qui est configurée pour recevoir un substrat de génération d'aérosol (14), et une paroi (28, 30, 44) s'étendant à partir de l'ouverture (36), et un détecteur de substrat (51) configuré pour détecter une déformation de la paroi (28, 30, 44) qui est provoquée par un substrat de génération d'aérosol (14), le détecteur de substrat (51) comprenant une couche de détection disposée sur la paroi (28, 30, 44) et configurée pour se déformer conjointement avec la paroi.
PCT/EP2024/076922 2023-09-26 2024-09-25 Récipient pour substrat de génération d'aérosol Pending WO2025068279A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP23199859.2 2023-09-26
EP23199859 2023-09-26

Publications (1)

Publication Number Publication Date
WO2025068279A1 true WO2025068279A1 (fr) 2025-04-03

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ID=88204324

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2024/076922 Pending WO2025068279A1 (fr) 2023-09-26 2024-09-25 Récipient pour substrat de génération d'aérosol

Country Status (1)

Country Link
WO (1) WO2025068279A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210212173A1 (en) * 2015-09-16 2021-07-08 Altria Client Services Llc Cartridge including a liquid storage portion with a flexible wall
US20210204610A1 (en) * 2018-05-25 2021-07-08 Jt International S.A. Vapour Generating Device With Sensors To Measure Strain Generated By A Vapour Generating Material
WO2021160803A1 (fr) * 2020-02-14 2021-08-19 Nerudia Limited Système de substitution pour fumeur
JP7204924B2 (ja) * 2020-01-06 2023-01-16 ケーティー アンド ジー コーポレイション エアロゾル生成装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210212173A1 (en) * 2015-09-16 2021-07-08 Altria Client Services Llc Cartridge including a liquid storage portion with a flexible wall
US20210204610A1 (en) * 2018-05-25 2021-07-08 Jt International S.A. Vapour Generating Device With Sensors To Measure Strain Generated By A Vapour Generating Material
JP7204924B2 (ja) * 2020-01-06 2023-01-16 ケーティー アンド ジー コーポレイション エアロゾル生成装置
WO2021160803A1 (fr) * 2020-02-14 2021-08-19 Nerudia Limited Système de substitution pour fumeur

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