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WO2025056550A1 - Générateur d'aérosol - Google Patents

Générateur d'aérosol Download PDF

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Publication number
WO2025056550A1
WO2025056550A1 PCT/EP2024/075261 EP2024075261W WO2025056550A1 WO 2025056550 A1 WO2025056550 A1 WO 2025056550A1 EP 2024075261 W EP2024075261 W EP 2024075261W WO 2025056550 A1 WO2025056550 A1 WO 2025056550A1
Authority
WO
WIPO (PCT)
Prior art keywords
aerosol
heater
generating material
aerosol generating
layer
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/EP2024/075261
Other languages
English (en)
Inventor
Juan Esteban Paz JAUREGUI
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.)
Nicoventures Trading Ltd
Original Assignee
Nicoventures Trading Ltd
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 Nicoventures Trading Ltd filed Critical Nicoventures Trading Ltd
Publication of WO2025056550A1 publication Critical patent/WO2025056550A1/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
    • A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
    • A24F40/46—Shape or structure of electric heating means
    • 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
    • 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
    • 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
    • A24F40/70—Manufacture

Definitions

  • the present invention relates to an aerosol generator of an article for an aerosol provision device.
  • the present invention also relates to an article for an aerosol provision device, an aerosol provision system, a method of forming an aerosol generator of an article for an aerosol provision device, and a blank for forming an aerosol generator of an article for an aerosol provision device.
  • Smoking articles such as cigarettes, cigars and the like burn tobacco during use to create tobacco smoke. Attempts have been made to provide alternatives to these articles by creating products that release compounds without combusting. Examples of such products are so-called “heat not burn” products or tobacco heating devices or products, which release compounds by heating, but not burning, material.
  • the material may be, for example, tobacco or other non-tobacco products, which may or may not contain nicotine.
  • Aerosol provision systems which cover the aforementioned devices or products, are known.
  • Common systems use heaters to create an aerosol from a suitable medium which is then inhaled by a user. Often the medium used needs to be replaced or changed to provide a different aerosol for inhalation. It is known to use resistive heating systems as heaters to create an aerosol from a suitable medium.
  • a heating arrangement comprising a first heater track having a first resistance, and a second heater track having a second resistance, wherein the first and second heater tracks are connected in parallel, and wherein the first resistance at a predetermined temperature is less than the second resistance at said predetermined temperature.
  • the first resistance may be less than the second resistance at any given temperature.
  • the first and second heater tracks may have different temperatures at any given time. As such, the first resistance may be less than, greater than or equal to the second resistance at times.
  • each heater track is variable with temperature. Each heater track will increase in temperature in use.
  • the first heater When a potential difference is applied to the heating arrangement, the first heater initially draws more power, increasing in temperature at a greater rate than the second heater, and therefore increasing in resistance at a greater rate than the second heater, until the first resistance is equal to the second resistance. At such a time, the second heater will draw the same power as the first heater.
  • the difference in the rate of temperature increases decreases. I.e. initially, the first temperature increases far more rapidly than the second temperature: over time this difference decreases as the resistances become closer.
  • the heater tracks may be formed from a material having a positive temperature coefficient of resistance (PCT) such as aluminium, nichrome, or iron.
  • PCT positive temperature coefficient of resistance
  • the heater track having a lower resistance draws more power, increasing in temperature, and therefore increasing in resistance, at a faster rate than the other (higher resistance) heater, until such a time both resistances are similar. At such a time, both heaters will draw similar power, and increase in temperature and resistance.
  • the heating arrangement may include a third heater track having a third resistance, wherein the third resistance at the predetermined or any given temperature is greater than the second resistance at said predetermined or given temperature.
  • a method of operating the heating arrangement described above wherein the first heater track has a first temperature, and the second heater track has a second temperature
  • the method comprising applying a potential difference across the heating arrangement, wherein the first temperature increases, such that the first resistance increases, and the second temperature increases at slower initial rate than first temperature, such that the second resistance increases at a slower rate than the first resistance, such that the first temperature is greater than the second temperature after a first predetermined length of time.
  • the potential difference may be initially applied across the heating arrangement when the first temperature is substantially the same as the second temperature.
  • the first resistance may be equal to the second resistance.
  • the second temperature may increase at a faster rate than the first temperature.
  • an aerosol provision device comprising the heating arrangement described above.
  • an aerosol provision system including the aerosol provision device as described above and an aerosol generating material, wherein the first heater track is arranged to activate a first zone of aerosol generating material, and the second heater track is arranged to activate a second zone of aerosol generating material.
  • Heating a zone of aerosol generating material will activate said aerosol generating material.
  • a method heating an aerosol generating material using the method described above, wherein the first heater tracks heats a first zone of aerosol generating material, and wherein the second heater track heats a second zone of aerosol generating material.
  • the heating arrangement will initially heat or activate the first area of aerosol generating material to a greater degree than the second area of aerosol generating material.
  • an exterior of the article may have a length, a width perpendicular to the length, and a depth perpendicular to each of the length and the width, wherein the length is greater than or equal to the width, and wherein the width is greater than the depth.
  • the aerosol generator may comprise a support configured to support a resistive heating layer, wherein the resistive heating layer comprises the resistive heater track(s).
  • the support may comprise a support layer. In an embodiment of any of the above, the support may be electrically insulative.
  • the support may comprise at least one of paper and card.
  • the aerosol generating material is in the form of an aerosol generating layer.
  • the aerosol generating material may be in direct contact with the resistive heating layer. In an embodiment of any of the above, the aerosol generating layer may be in direct contact with the resistive heating layer.
  • the aerosol generating material may be in indirect contact with the resistive heating layer. In an embodiment of any of the above, the aerosol generating layer may be in indirect contact with the resistive heating layer.
  • the resistive heating layer and the support layer define the substrate.
  • the aerosol generator may comprise a laminate comprising the resistive heating layer and the support layer.
  • the laminate may comprise the aerosol generating material. In an embodiment of any of the above, the laminate may comprise the aerosol generating layer.
  • the support layer may comprises a card layer.
  • the first type of electrical contact may be configured to electrically connect with a device electrical connector and the second type of electrical contact may be is configured to electrically connect with the device electrical connector.
  • the support may define an exposed contact area of the first type of electrical contact.
  • the exposed contact area may be a first exposed contact area
  • the support may define a second exposed contact area of the second type of electrical contact.
  • the aerosol generating material may be a continuous aerosol generating material.
  • the aerosol generating layer may be a continuous aerosol generating layer.
  • the continuous aerosol generating material may include a plurality of aerosol generating zones.
  • the continuous aerosol generating layer may include a plurality of aerosol generating zones.
  • the aerosol generating material may be a discontinuous aerosol generating material.
  • the discontinuous aerosol generating material may include a plurality of aerosol generating zones.
  • the aerosol generating layer may be a discontinuous aerosol generating layer.
  • the discontinuous aerosol generating layer may include a plurality of aerosol generating zones.
  • the aerosol generating material may comprise a plurality of discrete aerosol generating portions or aerosol generating zones.
  • the aerosol generating layer may comprise a plurality of discrete aerosol generating portions or aerosol generating zones.
  • the resistive heater track is one of a plurality resistive heater tracks.
  • one of the discrete aerosol generating portions or zones is associated with a corresponding one of the plurality of resistive heating tracks.
  • the aerosol generating layer may comprise at least one of dots, strips and patches.
  • each resistive heater track providing an electrically conductive path for resistive heating of a portion of the aerosol generating material to generate an aerosol at the respective portion of the aerosol generating material.
  • each resistive heater track providing an electrically conductive path for resistive heating of a portion of the aerosol generating material to generate an aerosol at the respective portion of the aerosol generating layer.
  • the resistive heating layer forms an array of resistive heater tracks comprising at least the first resistive heater track and the second resistive heater track.
  • each of the first type of electrical contact and the second type of electrical contact are configured to enable an electric current to be individually provided to each of the resistive heater tracks.
  • the aerosol generating layer comprises a film or gel layer comprising the aerosol generating material.
  • the aerosol generator comprises a plurality of the first type of electrical contact, wherein each of the heating elements comprises a separate first type of electrical contact.
  • the aerosol generator comprises a plurality of the second type of electrical contacts, wherein each of the resistive heater tracks comprises a separate second type of electrical contact.
  • the aerosol generator comprises a single second type of electrical contact.
  • the resistive heater track is formed by at least one of: cutting the resistive heating layer; chemically etching the resistive heating layer; forming or pressing the resistive heating layer in the substrate; and printing the resistive heating layer.
  • the resistive heating layer is in the form of a foil.
  • an aerosol generator of an article for an aerosol provision device comprising: aerosol generating material; a resistive heating layer comprising a resistive heater track configured to heat at least a portion of the aerosol generating material to generate an aerosol; a first type of electrical contact; and a second type of electrical contact; and wherein the resistive heater track is at least a portion of an electrically conductive path between the first type of electrical contact and the second type of electrical contact.
  • an aerosol generating layer is provided comprising the aerosol generating material.
  • an aerosol provision device configured to receive an aerosol generator or an article for an aerosol provision device of any of the above.
  • an aerosol provision system comprising an aerosol generator or an article for an aerosol provision device of any of the above, and an aerosol provision device of any of the above.
  • Figure 1 is a schematic perspective view of an aerosol provision system
  • Figure 2 is a schematic perspective view of an article comprising aerosol generating material of the aerosol provision system of Figure 1;
  • Figure 3 is a schematic perspective view of a first side of an aerosol generator of the article of Figure 2;
  • Figure 4 is a schematic perspective view of part of a second side of the aerosol generator of Figure 3;
  • FIG 5 is a schematic block diagram of an aerosol provision system such as the system shown in Figure 1;
  • Figure 6 is a schematic partially exploded perspective view of the article of Figure 2, with an aerosol generator shown inverted from an assembled orientation and in a spaced relationship with other components;
  • Figure 8 is a schematic plan view of a heating element of the aerosol generator of Figure 3;
  • Figure 9 is a schematic plan view of a resistive heating layer of the aerosol generator of Figure 3 with a plurality of heating elements;
  • Figure 10 is a flow chart showing a method of forming an aerosol generator, such as the aerosol generator of Figure 3;
  • Figure 11 is an exploded perspective view of an aerosol generator being formed
  • Figure 12 is a schematic perspective view of a resistive heating layer of an aerosol generator being formed
  • Figure 13 is a flow chart showing a method of forming an aerosol generator, such as the aerosol generator of Figure 3;
  • Figure 14 is a flow chart showing a method of forming an aerosol generator, such as the aerosol generator of Figure 3;
  • Figure 16 is a schematic perspective view of a resistive heating layer of an aerosol generator being formed
  • Figure 18 is a schematic plan view of a heating element of an aerosol generator
  • Figure 19 is a schematic perspective view of part of an aerosol generator of the article of Figure 2;
  • Figure 20 is a schematic perspective view of a device connector of an aerosol provision device of the aerosol provision system of Figure 1 ;
  • Figure 21 is a schematic side view of the aerosol generating system of Figure 1 ;
  • Figure 22 is a flow chart showing a method of forming an aerosol generator, such as the aerosol generator of Figure 3;
  • Figures 23 to 25 show an aerosol generator being formed
  • Figure 26 is a schematic of a heating arrangement
  • Figure 27 is a schematic of an alternative heating arrangement
  • delivery mechanism is intended to encompass systems that deliver a substance to a user, and includes: non-combustible aerosol provision systems that release compounds from an aerosolisable material without combusting the aerosolisable material, such as electronic cigarettes, tobacco heating products, and hybrid systems to generate aerosol using a combination of aerosolisable materials; and articles comprising aerosolisable material and configured to be used in one of these non-combustible aerosol provision systems.
  • the non-combustible aerosol provision system is an electronic cigarette, also known as a vaping device or electronic nicotine delivery system (END), although it is noted that the presence of nicotine in the aerosol-generating material is not a requirement.
  • END electronic nicotine delivery system
  • the non-combustible aerosol provision system is a hybrid system to generate aerosol using a combination of aerosol-generating materials, one or a plurality of which may be heated.
  • Each of the aerosol-generating materials may be, for example, in the form of a solid, liquid or gel and may or may not contain nicotine.
  • the hybrid system comprises a liquid or gel aerosol-generating material and a solid aerosol-generating material.
  • the solid aerosol-generating material may comprise, for example, tobacco or a non-tobacco product.
  • the disclosure relates to consumables comprising aerosolgenerating material and configured to be used with non-combustible aerosol provision devices. These consumables are sometimes referred to as articles throughout the disclosure.
  • the non-combustible aerosol provision system such as a non-combustible aerosol provision device thereof, may comprise a power source and a controller.
  • the power source may, for example, be an electric power source.
  • the non-combustible aerosol provision system may comprise an area for receiving the consumable, an aerosol generator, an aerosol generation area, a housing, a mouthpiece, a filter and/or an aerosol-modifying agent.
  • the consumable for use with the non-combustible aerosol provision device may comprise aerosol-generating material, an aerosol-generating material storage area, an aerosol-generating material transfer component, an aerosol generator, an aerosol generation area, a housing, a wrapper, a filter, a mouthpiece, and/or an aerosolmodifying agent.
  • aerosol-generating material (which is sometimes referred to herein as an aerosolisable material) is a material that is capable of generating aerosol, for example when heated, irradiated or energized in any other way. Aerosol-generating material may, for example, be in the form of a solid, liquid or semisolid (such as a gel) which may or may not contain an active substance and/or flavourants.
  • the substance to be delivered comprises an active substance (sometimes referred to herein as an active compound).
  • the aerosol-generating material may comprise one or more active substances and/or flavours, one or more aerosol-former materials, and optionally one or more other functional material.
  • the aerosol-generating material may comprise a binder, such as a gelling agent, and an aerosol former.
  • a substance to be delivered and/or filler may also be present.
  • a solvent such as water, is also present and one or more other components of the aerosol-generating material may or may not be soluble in the solvent.
  • the aerosol-generating material is substantially free from botanical material.
  • the aerosol-generating material is substantially tobacco free.
  • the aerosol-generating material may comprise or be in the form of an aerosolgenerating film.
  • the aerosol-generating film may comprise a binder, such as a gelling agent, and an aerosol former.
  • a substance to be delivered and/or filler may also be present.
  • the aerosol-generating film may be substantially free from botanical material.
  • the aerosol-generating material is substantially tobacco free.
  • the aerosol-generating film may have a thickness of about 0.015 mm to about 1 mm.
  • the thickness may be in the range of about 0.05 mm, 0.1 mm or 0.15 mm to about 0.5 mm or 0.3 mm.
  • the aerosol-generating film may be continuous.
  • the film may comprise or be a continuous sheet of material.
  • the aerosol-generating film may be discontinuous.
  • the aerosolgenerating film may comprise one or more discrete portions or regions of aerosol-generating material, such as dots, stripes or lines, which may be supported on a support.
  • the support may be planar or non-planar.
  • the aerosol-generating film may be formed by combining a binder, such as a gelling agent, with a solvent, such as water, an aerosol-former and one or more other components, such as one or more substances to be delivered, to form a slurry and then heating the slurry to volatilise at least some of the solvent to form the aerosol-generating film.
  • a binder such as a gelling agent
  • a solvent such as water
  • an aerosol-former such as one or more other components, such as one or more substances to be delivered
  • the slurry may be heated to remove at least about 60 wt%, 70 wt%, 80 wt%, 85 wt% or 90 wt% of the solvent.
  • the aerosol-generating material may be an “amorphous solid”. In some embodiments, the amorphous solid is a “monolithic solid”. The aerosol-generating material may be non-fibrous or fibrous. In some embodiments, the aerosol-generating material may be a dried gel. The aerosol-generating material may be a solid material that may retain some fluid, such as liquid, within it. In some embodiments the retained fluid may be water (such as water absorbed from the surroundings of the aerosol-generating material) or the retained fluid may be solvent (such as when the aerosol-generating material is formed from a slurry). In some embodiments, the solvent may be water.
  • the aerosol-former material may comprise one or more constituents capable of forming an aerosol.
  • the aerosol-former material may comprise one or more of glycerine, glycerol, propylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, 1,3-butylene glycol, erythritol, meso-Erythritol, ethyl vanillate, ethyl laurate, a diethyl suberate, triethyl citrate, triacetin, a diacetin mixture, benzyl benzoate, benzyl phenyl acetate, tributyrin, lauryl acetate, lauric acid, myristic acid, and propylene carbonate.
  • the one or more other functional materials may comprise one or more of pH regulators, colouring agents, preservatives, binders, fillers, stabilizers, and/or antioxidants.
  • the material may be present on or in a support, to form a substrate.
  • the support may, for example, be or comprise paper, card, paperboard, cardboard, reconstituted material, a plastics material, a ceramic material, a composite material, glass, a metal, or a metal alloy.
  • An aerosol provision device can receive an article comprising aerosol generating material for heating.
  • An “article” in this context is a component that includes or contains in use the aerosol generating material, which is heated to volatilise the aerosol generating material, and optionally other components in use.
  • a user may insert the article into or onto the aerosol provision device before it is heated to produce an aerosol, which the user subsequently inhales.
  • An aerosol generator is an apparatus configured to cause aerosol to be generated from the aerosol-generating material.
  • the aerosol generator is a heater configured to subject the aerosol-generating material to heat energy, so as to release one or more volatiles from the aerosol-generating material to form an aerosol.
  • the article 300 comprises the aerosol generator 304.
  • the aerosol generator 304 is configured to generate an aerosol from the aerosol generating material 302 upon operation of the aerosol provision system 100, as will be describe in detail below.
  • the aerosol provision system 100 may be elongate, extending along a longitudinal axis.
  • the aerosol provision system 100 has a proximal end 102, which will be closest to the user (e.g. the user’s mouth) when in use by the user to inhale the aerosol generated by the aerosol provision system 100, and a distal end 104 which will be furthest from the user when in use.
  • the proximal end may also be referred to as the “mouth end”.
  • the aerosol provision system 100 accordingly defines a proximal direction, which is directed towards the user when in use. Further, the aerosol provision system 100 likewise defines a distal direction, which is directed away from the user when in use.
  • proximal and distal as applied to features of the system 100 will be described by reference to the relative positioning of such features with respect to each other in a proximal-distal direction along a longitudinal axis.
  • the article 300 is received by the aerosol provision device 200.
  • the configuration of the article 300 and the aerosol provision device 200 may vary.
  • the aerosol provision device 200 comprises a device body 202.
  • the device has a housing 204 enclosing components of the device 200.
  • An article receiving portion 206 is configured to receive a portion of the article 300.
  • a proximal end 308 of the article protrudes from the device 200 when the article 300 is received in the device chamber 206.
  • a receptacle 208 defines the chamber 206.
  • the receptacle 208 comprises a receptacle base 210 and a receptacle peripheral wall 212.
  • the configuration of the receptacle 208 may vary in dependence on the configuration of the article 300.
  • the article receiving portion may be arranged to receive the entire article 300.
  • the aerosol provision device 200 comprises an opening 214 at the proximal end, leading into the device chamber 206.
  • the opening 214 is provided in one end, through which the article 300 can be inserted.
  • the article 300 may be fully or partially inserted into the device 200.
  • the configuration of the device 200 may vary, for example the opening may be in a longitudinal side wall of the device 200, and/or may be closed by another feature of the device 200 during use.
  • the article 300 defines a mouthpiece 310 at the proximal end 308.
  • the device 200 defines the mouthpiece. The user places their mouth over the mouthpiece during use.
  • the device 200 defines the longitudinal axis along which an article 300 may extend when inserted into the device 200.
  • the opening 214 is aligned on the longitudinal axis.
  • the longitudinal axis may be an axis along which the article 300 is inserted into the device 200.
  • the longitudinal axis may be considered to be a receiving axis of the device 200.
  • the article 300 may similarly have a longitudinal axis along which it is inserted into the device and this axis may be considered to be an insertion axis.
  • the aerosol provision device 200 comprises a power source 220.
  • the power source 220 may be a battery, for example a rechargeable battery.
  • the device 200 also comprises a control circuit 222, acting as a controller, comprising a processor and a memory.
  • a heating system 110 is configured to heat the aerosol generating material 302 of an article 300.
  • the article 300 in embodiments is a consumable, and is interchangeable with other articles 300.
  • the heating system 110 comprises the aerosol generator 304.
  • the heating system 110 comprises other components of the aerosol provision system 100 including components of the article 300 and the aerosol provision device 200, for example the power source 220 and the control circuit 222.
  • the heating arrangement 312 is a resistive heating arrangement.
  • the or each heating element in embodiments is a resistive heater track, as described in detail below.
  • the heating system 110 comprises a resistive heating generator including components to heat the heating arrangement 312 via a resistive heating process.
  • an electrical current is directly applied to a resistive heater track, and the resulting flow of current in the heating element, acting as a heating component, causes the heating element to be heated by Joule heating.
  • the resistive heater track comprises resistive material configured to generate heat when a suitable electrical current passes through it, and the heating arrangement 312 comprises electrical contacts for supplying electrical current to the resistive material.
  • the provision of a resistive heating arrangement 312 allows for a compact arrangement. Resistive heating provides an efficient configuration.
  • the aerosol provision system comprises two main components, namely a control section forming a reusable part and a consumable section forming a replaceable or disposable part which may be referred to as a replaceable or disposable article or cartridge.
  • the aerosol provision device 200 forms a control section and the article 300 forms the consumable section.
  • the control section and the consumable part may be releasably connected at an interface.
  • the consumable part may be removable and replaceable, for example when the consumable part is used, with the control section being re-used with a different consumable part.
  • the aerosol provision system 100 as shown is provided by way of example only and is highly schematic. Different aerosol generating devices and other devices may be used in example implementations of the principles described here. For example, in some example embodiments, air is drawn into an air inlet in the control section, passes through the interface, and exits the consumable part.
  • the article 300 has an article electrical contact configuration 320.
  • the electrical contact configuration 320 in embodiments is formed by the aerosol generator 304.
  • the electrical contact configuration 320 comprises heater electrical contacts 322.
  • the heater electrical contacts 322 may also be known as heater or article contacts.
  • the aerosol provision device 200 comprises an electrical connector 230.
  • the electrical connector 230 comprises connector electrical contacts 232.
  • the connector electrical contacts 232 may also be known as connector or device contacts.
  • the article electrical contact configuration 320 is configured to electrically communicate with the device electrical connector 230.
  • the configuration of the article 300 may vary.
  • the article 300 comprises a body 324.
  • the body 324 is hollow.
  • the body 324 defines a flow path 326 (refer to Figure 6) through the article 300.
  • the flow path 326 extends between the air inlet 314 and the aerosol outlet 318.
  • the flow path 326 is defined by an internal space in the article along which air and/or aerosol can flow.
  • the flow path 326 is defined in the body 324.
  • the or each aerosol generator 304 bounds the flow path 326.
  • the aerosol generating material 302 is exposed to the flow path 326.
  • the aerosol generating material 302 is exposed in the internal space.
  • the internal space in embodiments comprises two or more chambers.
  • the article 300 comprises two aerosol generators 304 forming an aerosol generator arrangement.
  • the number of aerosol generators 304 may differ.
  • Each aerosol generator 304 comprises aerosol generating material 302.
  • the aerosol generating material 302 is exposed to the flow path 326.
  • the article 300 comprises a single aerosol generator 304.
  • One of the aerosol generators 304 will be described in detail, with such detail being applicable to one or more further aerosol generators 304 in embodiments.
  • the or each aerosol generator 304 and the body 324 are formed in a stacked configuration.
  • other arrangements such as a tubular arrangement of the article are envisaged.
  • the aerosol generator 304 defines a tubular configuration.
  • Tubular may include circular cross-sectional, an elliptical cross section and other polygonal shapes.
  • Figure 6 is a partially exploded perspective view of the article 300, with an aerosol generator 304 shown inverted from an assembled orientation and in a spaced relationship with other components.
  • the article 300 comprises a first one of the aerosol generators 304 the body 324 and a second one of the aerosol generators 304.
  • the body 324 spaces the first and second aerosol generators 304.
  • the first and second aerosol generators 304 close the internal space defined by the body 324 along which air and/or aerosol can flow.
  • the aerosol generating material 302 of the first and second aerosol generators 304 face each other and is exposed to the internal space. When assembled, the first and second aerosol generators 304 sandwich the body 324.
  • the first and second aerosol generators 304 and the body have equal plan areas. In embodiments, one or more of the first and second aerosol generators 304 and the body 324 has a greater length and/or width. In embodiments, one of the first and second aerosol generators 304 is replaced by a blank panel.
  • the body 324 comprises a body layer. The body may comprise a plurality of body layers. The body layers may be formed in a stack and arranged to define features of the article 300, such as the air inlet 314 and aerosol outlet 318.
  • the aerosol generator 304 comprises an aerosol generating layer 330.
  • the aerosol generating layer is also known as an aerosolisable layer.
  • the aerosol generating layer 330 comprises the aerosol generating material 302.
  • the aerosol generator 304 comprises a resistive heating layer 340.
  • the resistive heating layer 340 in embodiments, is formed as an electrically conductive layer.
  • the aerosol generating layer 330 is on the resistive heating layer 340.
  • the aerosol generating layer 330 is in direct contact with the resistive heating layer 340.
  • the aerosol generating layer 330 is in indirect contact with the resistive heating layer 340.
  • the resistive heating layer 340 may in embodiments comprise a coating.
  • the resistive heating layer 340 comprises a plurality of resistive heater tracks 342, for example as shown in Figures 8 and 9.
  • the or each resistive heater track 342 forms at least a portion of an electrically conductive path between a pair of the electrical contacts 322.
  • the or each resistive heater track 342 provides the electrically conductive path for resistive heating of at least of portion of the aerosol generating material 302 to generate an aerosol.
  • the aerosol generating material 302 is, in embodiments, in the form of a film or a gel.
  • the resistive heating layer 340 is formed as an electrically conductive layer. This layer in embodiments takes the form of at least one of a metal layer, such as an aluminium layer, or a non-metallic material, such as graphene.
  • the resistive heating layer 340 is in the form of a foil, for example an aluminium foil.
  • the aerosol generator 304 comprises a support 350.
  • the support 350 in embodiments comprise a paper or card material.
  • the support 350 provides structural support for the aerosol generator 304.
  • the resistive heating layer 340 is on the support 350.
  • the support 350 is configured as a support layer. As shown in Figure 7, in the aerosol generator 304, the resistive heating layer 340 is sandwiched between the support 350 and the aerosol generating layer 330.
  • the support 350 is electrically insulative.
  • the resistive heating layer 340 and the support layer 350 define a substrate 352.
  • the substrate 352 supports the aerosol generating layer 330.
  • the article 300 may comprise a laminate 354 comprising the resistive heating layer 340 and the support layer 350.
  • the laminate 354 comprises the aerosol generating layer 330.
  • the aerosol generating layer 330 may be formed as a contiguous configuration, or may be formed from discrete portions. The discrete portions may comprise one or more of dots, strips, spirals, or other shapes.
  • One or more of the aerosol generating layer 330, resistive heating layer 340 and the support layer 350 may comprise a further layer.
  • the support layer 350 may comprise a backing layer or an intermediate layer.
  • the support layer 350 in embodiments is omitted.
  • Figure 8 shows one of the resistive heater tracks 342.
  • the resistive heating layer 340 comprises a plurality of resistive heater tracks 342.
  • the resistive heater track 342 comprises a resistive heating path.
  • the resistive heating path is formed by an electrically conducting path.
  • the resistive heating path is nonstraight.
  • the resistive heating path is convoluted.
  • the configuration of the resistive heating path may vary.
  • the electrical resistance of the heating element 342 may be dependent on the nature of the resistive heating path in the conductive layer, for example the length, width, thickness and arrangement of the path.
  • the resistive heater track 342 extends between a first type of electrical contact 360 and a second type of electrical contact 365.
  • the first type of electrical contact 360 is configured to provide a positive contact and the second type of electrical contact 365 is configured to provide a negative contact. Electrical current flows between the first type of electrical contact 360 and the second type of electrical contact 365 through the path. The contact arrangement may be reversed.
  • the first and second types of electrical contacts 360, 365 are heater electrical contacts 322.
  • the first and second types of electrical contacts 360, 365 form at least part of the article electrical contact configuration 320.
  • the meandering or serpentine nature of the path of the resistive heater track 342 is such that the electrical resistance of the path is increased when compared with a straight path between the first and second type of electrical contacts.
  • the resistive heating layer 340 may comprise a second type of electrical track 366 extending from the resistive heater track 342.
  • the second type of electrical track 366 comprises the second type of electrical contact 365.
  • the electrical contact 365 of the second type is configured to electrically connect with the device electrical connector 230.
  • the second type of electrical contact 365 comprises a second type of exposed contact region 367.
  • the second type of exposed contact region 367 is exposed on the article 300 for direct connection with the device electrical connector 230.
  • the at least one electrically conductive barrier 346 defines the first and second types of electrical track 361 , 366.
  • the tracks of the or each resistive heater track 342 have a width in the region of 0.5mm to 1mm (two example prototypes have widths of 0.93mm and 0.72mm respectively) and gaps between the tracks of less than about 0.25mm (the same two example prototypes have gaps of 0.2mm and 0.05mm respectively).
  • the or each resistive heater track 342 may have overall dimensions of the order of 10mm x 10mm. Other dimensions are possible in other example embodiments. By forming the or each resistive heater track 342 of these dimensions from an aluminium foil of having a thickness of 0.006mm and an electrical resistivity of between 2 and 6 pOhmcm, the resistance of the path has been calculated to be of the order of 1 Ohm. In one example embodiment, the resistance was measured at between 0.83 and 1.31 Ohms.
  • the resistive heating layer 340 may be formed into a plurality of resistive heater tracks, indicated generally by the reference numerals 342a, 342b, 242c, 342d and 342e.
  • Each of the resistive heater tracks 342a-342e extends from a respective one of the first type of electrical contact, indicated generally by the reference numerals 360a, 360b, 360c, 360d and 360e to a single second type of electrical contact 365.
  • the number of electrical contacts may vary.
  • each resistive heater track 342a-342e extends between a discrete first type of electrical contact and a common second type of electrical contact.
  • Each of the resistive heater track 342a-342e provides an electrically conductive path for resistive heating of a portion of the aerosol generating material 302 to generate an aerosol at the respective portion of the aerosol generator 304.
  • the separate first type 360a-360e of electrical contacts enable an electric current to be individually provided to each of the plurality of resistive heater tracks 342a-342e.
  • the heating of different zones of the aerosol generating layer 330 can be controlled.
  • an aerosol generator may be provided with five aerosol generating zones.
  • the resistive heating layer 340 allows each of those zones to be activated separately. Accordingly, for example, five puffs of aerosol may be generated from a single consumable incorporating a single aerosol generator 304, and ten puffs of aerosol may be generated from a single consumable incorporating two aerosol generators 304.
  • each resistive heater track 342a-342e comprises a corresponding one of the first type of electrical contact 360 and a corresponding one of the second type of electrical contact 365.
  • the first type of electrical contacts 360a-360e are arranged on a first edge 363 of the resistive heating layer 340 and the second type of electrical contact 365 is arranged on a second edge 368 of the resistive heating layer 340.
  • This may allow for convenient connection of electrical power, but, of course, many other configurations are possible, some of which are discussed further below.
  • Figure 10 is a flow chart showing part of a method of forming an aerosol generator 304 or an algorithm, indicated generally by the reference numeral 400, in accordance with an example embodiment.
  • the method or algorithm 400 starts at operation 402, where a resistive heating layer is formed into one or more heating elements (e.g. a plurality of heating elements), wherein each resistive heater track extends from an electrical contact of a first type to an electrical contact of a second type.
  • the or each heating element may be used to provide an electrically conductive path for resistive heating of a portion of an aerosol generating material to generate an aerosol.
  • the formation of the or each resistive heater track may occur prior to or post application of the resistive heating layer on a support, where a support is present.
  • the resistive heating layer may be adhered to the support, or mounted or formed on the support in a different configuration.
  • Figure 11 shows the aerosol generator 304 being formed in accordance with an embodiment.
  • the aerosol generating material 302 is formed on the resistive heating layer 340 by depositing aerosol generating material, for example by spraying, painting, dispensing or in some other way.
  • the aerosol generating layer 330 is disposed on resistive heating layer 340 as indicated by the arrow 406, in an example implementation of the operation 64.
  • Figure 12 shows the resistive heating layer 340 being formed in accordance with an example embodiment.
  • the resistive heating layer 340 is in the process of being cut using a laser cutter 408.
  • the cutting of the resistive heating layer 340 can be used to form the paths of the heating elements described herein.
  • the use of the laser cutter 408 (or some other cutting process) is not the only method by which the resistive heating layer 340 described herein may be generated. Some example methods are described below.
  • Figure 13 is a flow chart showing part of a method of forming an aerosol generator 304 or an algorithm, indicated generally by the reference numeral 410.
  • the method or algorithm 410 starts at operation 412, where the resistive heating layer is provided.
  • operation 414 one or more of the resistive heater tracks are formed in the resistive heating layer by chemically etching the resistive heating layer.
  • the operations 412 and 414 are an example implementation of the operation 402 of the method 400 described above.
  • the aerosol generating material is then disposed on the resistive heating layer, thereby implementing the operation 404 described above.
  • Figure 14 is a flow chart showing part of a method of forming an aerosol generator 304 or an algorithm, indicated generally by the reference numeral 418.
  • the method or algorithm 418 starts at operation 420, where one or more heating elements are formed, at least in part, by printing a resistive heating layer.
  • the operation 420 is therefore an example implementation of the operation 62 of the algorithm 402 described above.
  • the aerosol generating material is then disposed on the resistive heating layer, thereby implementing the operation 404 described above.
  • Figure 15 is a flow chart showing method of operation or an algorithm, indicated generally by the reference numeral 424, in accordance with an example embodiment.
  • the method or algorithm 424 may, for example, be implemented using any of the aerosol generators described herein.
  • the method or algorithm 424 is initiated when an instruction to activate heating is received in an instance of operation 426.
  • a determination is made (in operation 428) regarding whether a heating element is available.
  • a plurality of heating elements may be provided.
  • the operation 428 may involve determination which of the heating elements have been used and/or the corresponding available aerosol generating material used up.
  • the algorithm moves to operation 430, where an available heating element is used.
  • heating elements may be individually controllable, for example by providing electrical power to individual heating elements.
  • the algorithm terminates at operation 432. If, at operation 428, a determination is made that no heating elements are available, for example because all heating elements have been used, then the algorithm terminates at operation 432. This may mean that a consumable part being used to implement the algorithm 424 needs to be replaced.
  • Figure 16 shows the resistive heating layer 340 being formed in accordance with an embodiment.
  • the resistive heating layer 340 is being cut using the laser cutter 408, although other methods could be used, such as chemical etching or printing, as discussed above.
  • the cutting of the electrically conductive layer 340 forms the heating elements as described herein.
  • FIG 17 shows another embodiment of the resistive heating layer 340.
  • the resistive heating layer 340 may be formed using the laser cutter 408 described above, or some similar device or another method.
  • the resistive heating layer 340 comprises a plurality of resistive heater tracks 342, each resistive heater track 342 being a linear heating element comprising a conducting path extending along a length of the resistive heating layer 340.
  • Each resistive heater track 342 extends from one of the first type of electrical contact 360, for example a positive electrical connection to one of the second type of electrical contact 365, for example a negative electrical contact.
  • both types of electrical contact are provided at the same end of the resistive heating layer 340 and are provided next to each other.
  • each heating element has separate first and second types of electrical contacts.
  • FIG 18 shows another embodiment of the resistive heating layer 340.
  • the resistive heating layer 340 may be formed using the laser cutter 408 described above, or some similar device or another method.
  • the resistive heating layer 340 comprises a plurality of heating elements 342, each heater element 342 being a linear heating element comprising a conducting path extending along a length of the resistive heating layer 340.
  • Each resistive heater track 342 extends from one of the first type of electrical contact 360, for example a positive electrical connection to the second type of electrical contact 365, for example a negative electrical contact.
  • the different types of electrical connection are provided at the opposite ends of the resistive heating layer 340 and a common second type of electrical contact is provided.
  • FIG 19 shows the distal end of the article 300.
  • the body 324 comprises a plurality of body layers 325.
  • the body layers 325 are arranged in a stack of body layers 325.
  • the body layers 325 form a laminate.
  • the body layers 325 in embodiments are card layers. Other suitable materials may be used.
  • the body layers 325 are configured to define features of the article 300.
  • At least one body layer in embodiments comprises a gap defining the air inlet 315. The gap defines the opening 314.
  • the aerosol generator 304 comprises the resistive heating layer 340.
  • the resistive heating layer 340 comprises the resistive heater tracks 342, the first type of electrical contacts 360, for example providing positive electrical connections to each of a plurality of heating elements 342 and a single second type of electrical contact 365, for example providing a common negative electrical connection to the plurality of heating elements 342.
  • the first and second types of electrical contacts 360, 365 namely the heater contacts 322, together form at least part of the article electrical contact configuration 320 of the aerosol generator 304.
  • the resistive heater tracks 342 are on an inner side of the resistive heating layer 340.
  • the inner side defines the first side 306 of the aerosol generator 304 as shown in Figure 3.
  • the heater contacts 322 are on the second side 307 of the resistive heating layer 340.
  • the second side 307 defines an outer side of the aerosol generator 304.
  • the heater contacts 322 are exposed so that they are able to be brought into contact with the device electrical connector 230.
  • the heater contacts 322 are on an opposing side of the resistive heating layer 340 to the resistive heater tracks 342. Other configurations are envisaged.
  • the support layer 350 is between an inner portion of the resistive heating layer 340 and an outer portion of the resistive heating layer 340.
  • a fold 370 is formed in the resistive heating layer 340.
  • the fold 370 defines the heater contacts 322.
  • the fold 370 as shown in Figures 2 to 4 and 19 extends perpendicular to the longitudinal axis of the aerosol generator 304.
  • the fold 370 defines a flap 372.
  • the heater contacts 322 are on the flap 372.
  • the flap defines a contact panel. The remaining part of the blank defines a main panel.
  • the support layer 350 in embodiments is folded.
  • the substrate 352 is folded at the fold 370.
  • the support layer 350 ends at the fold.
  • the fold 370 extends parallel to the longitudinal axis of the aerosol generator 304.
  • the folded portion of resistive heating layer 340 is affixed in the folded position. This folded portion in embodiments is adhered, for example by bonding. Other fixing means are anticipated.
  • the fold 370 defines the first type of exposed contact region 362.
  • the fold 370 defines the second type of exposed contact region 367.
  • the electrical tracks 361, 366 electrically communicate across the fold 370.
  • the heater contacts 322 of the first type of electrical track 361 and the second type of electrical track 366 are defined on the second side of the resistive heating layer 340. Portions of the first type of electrical track 361 and the second type of electrical track 366 extend on the first side of the resistive heating layer 340. In embodiments the resistive heater tracks extend from the fold 370. Other configurations are anticipated.
  • the aerosol generator 304 comprises a plurality of connector electrical contacts 232 of the electrical connector 230.
  • the configuration of the device connector 230 is dependent on the configuration of the heater contacts 322 of the aerosol generator 304.
  • the aerosol generator 300 comprises a plurality of heater contacts 322 including a plurality of the first type of heater contact 360 and one of the second type of heater contact 365.
  • the article 300 comprises another set of heater contacts 322 on the opposing side of the article 300 corresponding to the second aerosol generator 304.
  • Figure 20 shows a device connector 230 of the aerosol provision device 200 used in some embodiments.
  • the connector 230 has separate connector electrical contacts 232 for connection with the heater contacts 322.
  • FIG. 21 schematically shows the aerosol provision system 100.
  • the system 100 comprises the article 300 and aerosol provision device 200, both shown in block diagram.
  • the device 200 comprises first and second connectors 230a and 230b.
  • the connectors 230a and 230b enable the aerosol provision device 200 to provide regulated or controlled electrical voltages and/or currents to the various first and second type of heater contacts 360, 365 of the aerosol generator 304 when the article 300 is inserted into the aerosol provision device 200.
  • the aerosol provision device 200 may comprise a connector arrangement configured to provide electrical power to the connectors 230a, 230b.
  • the aerosol provision device 200 may, for example, operate the method as described above.
  • Figure 22 is a flow chart showing a method of forming an aerosol generator 304 or an algorithm, indicated generally by the reference numeral 440, in accordance with an example embodiment.
  • the method or algorithm 440 starts at operation 442, where a resistive heating layer is formed into at least one resistive heater track, the or each heating element providing an electrically conductive path for resistive heating of at least a portion of an aerosolisable material to generate an aerosol.
  • Example heating elements that may be formed in the operation 442 are described elsewhere in this document.
  • an aerosol generating material is applied and/or formed on the resistive heating layer.
  • the operations 442 and 444 of the method or algorithm 440 are similar to (and may be identical to) the operations 402 and 404 of the method or algorithm 400 described above.
  • At least one first type of electrical contact is provided on the resistive heating layer.
  • the method of formation may be any of the methods described above.
  • at least one second type of electrical contact is provided on the resistive heating layer.
  • the method of formation may be any of the methods described above.
  • the first and second types of electrical contact are formed along or proximal a single edge of the resistive heating layer. In embodiments, the first and second types of electrical contact are formed along or proximal to different edges of the resistive heating layer.
  • the first types of electrical contact e.g. positive connection(s)
  • the second types of electrical contact e.g. negative electrical connection(s)
  • the operations 446 and 448 could be performed in a different order, or at the same time. Moreover, the operations 446 and 448 could be performed together with the operation 442.
  • the resistive heating layer is folded.
  • the support layer is folded together with the resistive heating layer.
  • the resistive heating layer is folded such that electrical contacts of the first and second type are provided adjacent to one another, as discussed in detail below.
  • Figures 23 to 25 show an embodiment of the aerosol generator 304 being formed in accordance with the algorithm 440.
  • Figure 23 shows another embodiment of the aerosol generator 304 being formed.
  • the resistive heating layer 340 is being cut using a laser cutter 408.
  • the pre-folded configuration defines a blank for forming the aerosol generator 304.
  • the blank in embodiments defines fold lines along which folds are made during formation of the aerosol generator.
  • the aerosol generator 304 blank comprises the resistive heating layer 340 and the support layer 350.
  • the resistive heating layer 340 and the support layer 350 define panels defined by the fold lines.
  • the resistive heating layer 340 is formed into a plurality of heating elements 192, although the number may differ and may be one.
  • a plurality of the first type of the electrical contact 360 e.g.
  • each heating element of the plurality extends from an electrical contact of the first type to an electrical contact of the second type.
  • the cutting of the resistive heating layer 340 by the laser cutter 408 forms the paths of the or each heating element 342.
  • laser formation or some other cutting process is not the only method by which the resistive heating layer 340 described above may be generated.
  • Some example alternative methods include chemical etching and printing.
  • the aerosol generating layer 200 is provided on the resistive heating layer 340.
  • the blank is then folded, as indicated by the arrows in Figure 24.
  • the folds are formed parallel to a longitudinal direction of the aerosol generator 304.
  • Two folds are formed.
  • a first panel 375 is defined comprising the heating elements 342.
  • a second panel 376 is formed comprising the plurality of the first type of the electrical contact 360.
  • a third panel 377 is formed comprising the second type of electrical contact 365.
  • the aerosol generating layer 330 is on the first panel 375.
  • Figure 25 shows the folded aerosol generator 304.
  • the aerosol provision system comprises a heating system for enabling the electric current to be individually provided to each of the plurality of resistive heater tracks 342a- 342e, as discussed above with respect to Figure 9.
  • the heating of different zones of the aerosol generating layer can thus be controlled, and each zone can be activated separately.
  • Figure 26 shows a schematic of a heating arrangement 500 for heating two zones of aerosol generating material at different rates.
  • the heating arrangement 500 comprises a first heater track 502a and a second heater track 502b (also known as first and second resistive heater tracks).
  • the first and second heater tracks 502a, b are connected in parallel with one another.
  • the first heater track 502a has a lower resistance than the second heater track 502b when each of said heater tracks is at any given temperature. 1
  • the resistance of a heater track is dependent on the temperature thereof.
  • the heater track is formed from a material having a positive temperature coefficient of resistance (PCT), such as aluminium, nichrome or iron. As such, as the temperature of a heater track increases, the resistance thereof will also increase. It will be understood that the heater tracks may not have the same temperature at any given time and, as such, the relative resistances thereof may vary.
  • the path with the lowest resistance will draw more power.
  • the path with the lowest resistance heater will draw the most power.
  • the first heater track 502a will draw more power than the second heater track 502b, and thus increase in temperature more rapidly than the second heater track 502b.
  • the resistance of the first heater track 502a will increase at a greater rate than the second heater track 502b, resulting in the difference between the resistances decreasing. The difference in the rates of temperature increases will then also decrease.
  • FIG 27 shows a schematic of a heating arrangement 500 having three heater tracks having different resistances at a given temperature could be used.
  • the heating arrangement 500 comprises a first heater track 502a, a second heater track 502b, and a third heater track 502c connected in parallel with one another, and having first, second and third resistances respectively.
  • the first resistance is less than the second resistance
  • the second resistance is less than the third resistance.
  • the first heater track 502a will draw the most power, with the second heater track 502b drawing less power than the first heater track 502a, and more power than the third heater track 502c.
  • the first heater track 502a will therefore initially increase in temperature at a greater rate than the second heater track 502b, and the second heater track will increase in temperature at a greater rate than third heater track 502c, and their resistances will increase accordingly, in the same manner as described above.
  • several heater tracks having the same resistance at any given temperature may form a set of heater tracks.
  • Multiple sets of heater tracks, the sets comprising heater tracks having different resistances at a given temperature could be used.
  • the aerosol generating material may comprise tobacco material as described herein, which includes a tobacco component.
  • the tobacco component may contain paper reconstituted tobacco.
  • the tobacco component may also contain leaf tobacco, extruded tobacco, and/or bandcast tobacco.
  • the tobacco material may be provided in the form of cut rag tobacco.
  • the cut rag tobacco can be formed from a mixture of forms of tobacco material, for instance a mixture of one or more of paper reconstituted tobacco, leaf tobacco, extruded tobacco and bandcast tobacco.
  • the tobacco material comprises paper reconstituted tobacco or a mixture of paper reconstituted tobacco and leaf tobacco.
  • the tobacco material may contain a filler component.
  • the filler component is generally a nontobacco component, that is, a component that does not include ingredients originating from tobacco.
  • the filler component may be a non-tobacco fibre such as wood fibre or pulp or wheat fibre.
  • the filler component may also be an inorganic material such as chalk, perlite, vermiculite, diatomaceous earth, colloidal silica, magnesium oxide, magnesium sulphate, magnesium carbonate.
  • the filler component may also be a non-tobacco cast material or a non-tobacco extruded material.
  • the filler component may be present in an amount of 0 to 20% by weight of the tobacco material, or in an amount of from 1 to 10% by weight of the composition. In some embodiments, the filler component is absent.
  • the tobacco material contains an aerosol-former material.
  • an "aerosol-former material” is an agent that promotes the generation of an aerosol.
  • An aerosol-former material may promote the generation of an aerosol by promoting an initial vaporisation and/ or the condensation of a gas to an inhalable solid and/ or liquid aerosol.
  • an aerosol-former material may improve the delivery of flavour from the aerosol generating material.
  • any suitable aerosol-former material or agents may be included in the aerosol generating material of the invention, including those described herein.
  • Paper reconstituted tobacco refers to tobacco material formed by a process in which tobacco feedstock is extracted with a solvent to afford an extract of solubles and a residue comprising fibrous material, and then the extract (usually after concentration, and optionally after further processing) is recombined with fibrous material from the residue (usually after refining of the fibrous material, and optionally with the addition of a portion of non-tobacco fibres) by deposition of the extract onto the fibrous material.
  • the process of recombination resembles the process for making paper.

Landscapes

  • Resistance Heating (AREA)

Abstract

L'invention concerne un agencement de chauffage (500) comprenant une première piste de chauffage (502a) ayant une première résistance, et une seconde piste de chauffage (502b) ayant une seconde résistance, les première et seconde pistes de chauffage (502a, 502b) étant connectées en parallèle, et la première résistance à une température prédéterminée étant inférieure à la seconde résistance à ladite température prédéterminée.
PCT/EP2024/075261 2023-09-12 2024-09-10 Générateur d'aérosol Pending WO2025056550A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB2313910.8 2023-09-12
GBGB2313910.8A GB202313910D0 (en) 2023-09-12 2023-09-12 Aerosol generator

Publications (1)

Publication Number Publication Date
WO2025056550A1 true WO2025056550A1 (fr) 2025-03-20

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ID=88412659

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Application Number Title Priority Date Filing Date
PCT/EP2024/075261 Pending WO2025056550A1 (fr) 2023-09-12 2024-09-10 Générateur d'aérosol

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WO (1) WO2025056550A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10779571B2 (en) * 2015-02-05 2020-09-22 Philip Morris Products S.A. Aerosol generating device with anchored heater
EP3750417A1 (fr) * 2017-10-30 2020-12-16 KT&G Corporation Dispositif générateur d'aérosol avec corps de chauffe
WO2022154527A1 (fr) * 2021-01-14 2022-07-21 Kt&G Corporation Dispositif de chauffage pour dispositif de génération d'aérosol et dispositif de génération d'aérosol le comprenant
US20220338552A1 (en) * 2019-11-12 2022-10-27 Kt&G Corporation Aerosol generating device and operation method thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10779571B2 (en) * 2015-02-05 2020-09-22 Philip Morris Products S.A. Aerosol generating device with anchored heater
EP3750417A1 (fr) * 2017-10-30 2020-12-16 KT&G Corporation Dispositif générateur d'aérosol avec corps de chauffe
US20220338552A1 (en) * 2019-11-12 2022-10-27 Kt&G Corporation Aerosol generating device and operation method thereof
WO2022154527A1 (fr) * 2021-01-14 2022-07-21 Kt&G Corporation Dispositif de chauffage pour dispositif de génération d'aérosol et dispositif de génération d'aérosol le comprenant

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