EP3826478B1 - Article for forming an aerosol - Google Patents

Article for forming an aerosol Download PDF

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Publication number
EP3826478B1
EP3826478B1 EP19739283.0A EP19739283A EP3826478B1 EP 3826478 B1 EP3826478 B1 EP 3826478B1 EP 19739283 A EP19739283 A EP 19739283A EP 3826478 B1 EP3826478 B1 EP 3826478B1
Authority
EP
European Patent Office
Prior art keywords
aerosol
article
forming substrate
forming
substance
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.)
Active
Application number
EP19739283.0A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3826478A1 (en
EP3826478C0 (en
Inventor
Rui Nuno BATISTA
Frederic Nicolas
Cyrille Poindron
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.)
Philip Morris Products SA
Original Assignee
Philip Morris Products 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 Philip Morris Products SA filed Critical Philip Morris Products SA
Publication of EP3826478A1 publication Critical patent/EP3826478A1/en
Application granted granted Critical
Publication of EP3826478B1 publication Critical patent/EP3826478B1/en
Publication of EP3826478C0 publication Critical patent/EP3826478C0/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24C—MACHINES FOR MAKING CIGARS OR CIGARETTES
    • A24C5/00—Making cigarettes; Making tipping materials for, or attaching filters or mouthpieces to, cigars or cigarettes
    • A24C5/01—Making cigarettes for simulated smoking devices
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
    • A24B15/10—Chemical features of tobacco products or tobacco substitutes
    • A24B15/16—Chemical features of tobacco products or tobacco substitutes of tobacco substitutes
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
    • A24B15/10—Chemical features of tobacco products or tobacco substitutes
    • A24B15/12—Chemical features of tobacco products or tobacco substitutes of reconstituted tobacco
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
    • A24B15/10—Chemical features of tobacco products or tobacco substitutes
    • A24B15/16—Chemical features of tobacco products or tobacco substitutes of tobacco substitutes
    • A24B15/165—Chemical features of tobacco products or tobacco substitutes of tobacco substitutes comprising as heat source a carbon fuel or an oxidized or thermally degraded carbonaceous fuel, e.g. carbohydrates, cellulosic material
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
    • A24B15/10—Chemical features of tobacco products or tobacco substitutes
    • A24B15/16—Chemical features of tobacco products or tobacco substitutes of tobacco substitutes
    • A24B15/167—Chemical features of tobacco products or tobacco substitutes of tobacco substitutes in liquid or vaporisable form, e.g. liquid compositions for electronic cigarettes
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
    • A24B15/18—Treatment of tobacco products or tobacco substitutes
    • A24B15/24—Treatment of tobacco products or tobacco substitutes by extraction; Tobacco extracts
    • A24B15/241—Extraction of specific substances
    • A24B15/243—Nicotine
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B3/00—Preparing tobacco in the factory
    • A24B3/14—Forming reconstituted tobacco products, e.g. wrapper materials, sheets, imitation leaves, rods, cakes; Forms of such products
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D1/00—Cigars; Cigarettes
    • A24D1/02—Cigars; Cigarettes with special covers
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D1/00—Cigars; Cigarettes
    • A24D1/20—Cigarettes specially adapted for simulated smoking devices
    • 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

Definitions

  • This invention relates generally to an article for forming an aerosol and to a method of manufacture thereof.
  • Heated smoking devices of the above-described type commonly comprise a heating chamber, provided with, e.g. defined by, heating surfaces, into which an article for forming an aerosol is inserted, prior to use.
  • the article for forming an aerosol typically contains an aerosol-forming substrate which is subsequently heated by a heater of the device to generate an aerosol.
  • the article for forming an aerosol are normally shaped and sized to mimic conventional cigarettes. Accordingly, the articles, and the heating chamber in the heated smoking device into which they are inserted or insertable, have a generally cylindrical shape. Typically, the diameter of the articles is from 5 to 10 mm, say about 7.2 mm.
  • Articles for forming an aerosol of the above-described type typically have a wrapper or carrier layer within which the aerosol-forming substrate and other component parts are retained.
  • the aerosol-forming substrate may have the form of sheet or leaf tobacco, for example crimped and/or wound into a plug shape.
  • the aerosol-forming substrate is typically formed into a desired shape (for example a plug shape), combined with other component parts of an article for forming an aerosol, and then the wrapper or carrier layer is wrapped thereabout.
  • the other component parts of the article may comprise a filter material, which may be provided at one or both of the ends of the article, serving as a plug to retain the aerosol-forming substrate within the article and, also, to filter aerosol generated by the heated smoking device, in use.
  • an aerosol-cooling element (which may be formed from a gathered sheet of polylactic acid, for example) may be located within the article, between the aerosol-forming substrate and the filter at one end of the article.
  • a support element (for example formed from a hollow acetate tube) may additionally be positioned between the aerosol-forming substrate and the aerosol-cooling element.
  • EP0405190 discloses an extruded cigarette having a fuel element and a physically separate aerosol generating means which is capable of producing quantities of aerosol.
  • WO2016/005602 discloses an electrically operated aerosol-generating system comprising an aerosol-generating device, and first and second removable aerosol-forming cartridges each comprising a resistive heater.
  • the first removable aerosol-forming cartridge comprises a first aerosol-forming substrate requiring a first heating profile and the second removable aerosol-forming cartridge comprises a second aerosol-forming substrate requiring a second heating profile.
  • US2016/338412 discloses portable devices for generating a low-temperature inhalable vapor having an elongated tubular body containing a vaporization chamber and a battery-powered heater, a removable mouthpiece covering the vaporization chamber, a display configured to indicate the temperature of the vaporization chamber; a microcontroller configured to regulate the temperature of the vaporization chamber, and a control to select from among a variety of temperature settings.
  • a user inserts an article between the heating surfaces of the heating chamber of a heated smoking device.
  • the user draws air through a free end of the article (said free end comprising filter material).
  • the heater within the heated smoking device is activated to transfer thermal energy from the heating surfaces to the article for forming an aerosol via one or more of conduction, convection and radiation.
  • volatile compounds are released from the aerosol-forming substrate.
  • Air is drawn into the heated smoking device by the user drawing on the article for forming an aerosol. The air flows through at least part of the device and then into and along the length of the article, passing through the aerosol-forming substrate and drawing released volatile compounds therefrom along with it.
  • the air flow and volatile compound mixture then passes through the cooling segment, where the volatile compounds cool and condense into an aerosol.
  • This aerosol then passes through the filter material before being drawn into the lungs of the user.
  • the wrapper or carrier layer acts as a baffle during this process and serves to direct the air flow causing it to flow through and along the article to the user.
  • Activation of the heater may be triggered by a puff sensor, for example, which may react to air flow thereby or therethrough exceeding a pre-set threshold level.
  • a puff sensor for example, which may react to air flow thereby or therethrough exceeding a pre-set threshold level.
  • the user of the device begins to draw air through the device prior to heating and hence release of volatile compounds. Accordingly, there is a delay between a user beginning to draw on the device and the generation of aerosols thereby (and hence on the passage of generated aerosols reaching the user).
  • Devices for generating an aerosol of the above-described type are typically mobile and are generally intended to be held between the fingers of one hand.
  • a user of such a device may carry the device around with them, from location to location.
  • a user may store the device, between uses, in a pocket of an article of clothing.
  • Replacement articles for forming an aerosol are typically stored in a pack or case, which the user must remember to also carry with them.
  • the articles, which are typically cigarette shaped (as explained above) are generally stored in a pack or case having a similar shape to that of a cigarette packet.
  • the pack or case of articles for forming an aerosol may also be stored in a pocket of an article of clothing when the device is not in use.
  • Heating an aerosol-forming substrate requires that the aerosol-forming substrate is heated to a relatively reduced temperature. Accordingly, a relatively reduced quantity of thermal energy need be transferred to the aerosol-forming substrate.
  • the energy saved beneficially reduces the expense of operating the heated smoking device and/or increases the useful number of operations the device can perform before exhausting its store of energy. It would be beneficial, however, to yet further reduce the quantity of thermal energy required to volatilize compounds from an article for forming an aerosol.
  • a method for or of manufacturing an article for forming an aerosol comprising the steps of:
  • the mould surface provides a barrier which mitigates contact between the aerosol-forming substrate and a user handling the article, for example when inserting or removing the article from a device for generating an aerosol.
  • the substance comprising aerosol-forming substrate has a relatively more intimate contact with the mould surface than is the case between aerosol-forming substrates and cover layers or wrappers of prior art articles for forming an aerosol. Accordingly, heat transfer to the aerosol-forming substrate from peripheral heating surfaces of the heating chamber of a device for generating an aerosol is relatively more efficient than is the case with prior art articles for forming an aerosol.
  • prior art articles for forming an aerosol may comprise an at least partial air barrier between a wrapper and enclosed aerosol-forming substrate.
  • This air barrier provides a layer of insulation between the aerosol-forming substrate and a source of heat external to the article. Additionally, conduction of heat between the wrapper and the aerosol-forming substrate is limited or prevented in such prior art articles for forming an aerosol.
  • Articles for forming an aerosol according to the invention due to the relatively more intimate contact between the mould surface and the substance comprising aerosol-forming substrate mitigate the above-explained issues and, accordingly, provide more efficient heating of the aerosol-forming substrate, in use.
  • a power source of the device for generating an aerosol in which the article for forming an aerosol is heated, may be used for a relatively increased number of heating operations (for a given quantity of released volatile compounds).
  • the device is therefore more useful to a user thereof, and requires less frequent recharging (if such is possible) or replacement (if necessary), with attendant cost savings and improvements in convenience for the user.
  • the phrase 'aerosol-forming substrate' is used to describe a substrate capable of releasing upon heating volatile compounds, which can form an aerosol.
  • the aerosol generated from aerosol-forming substrates described herein may be visible or invisible to the human eye.
  • the aerosol-forming substrate may comprise a solid, a fluid or a mixture of solid and fluid substrate. Where the aerosol-forming substrate is a fluid it is advantageously retained within a matrix and/or by a cover layer, at least prior to receipt of the aerosol-forming substrate in the heating chamber.
  • 'aerosol' is used to describe a suspension of relatively small particles in a fluid medium.
  • the phrase 'mould surface' is intended to mean a surface for moulding (e.g. in step b)) an at least partially fluid thereagainst.
  • the term 'periphery' is intended to mean the outer limits of the volume of the article for forming an aerosol.
  • depositing a substance into the mould surface may comprise pouring, injecting or extruding the substance or otherwise causing the substance to flow.
  • the substance may be deposited in a first or deposition direction (for example in a single direction) onto the mould surface (for example relative to the mould surface).
  • the mould surface in a cross-section transverse to the first or deposition direction, may circumscribe substantially all of or the entire periphery of a formed article for forming an aerosol.
  • causing or allowing the substance to at least partially solidify may comprise at least partially cooling the substance. Cooling the substance may comprise directing or allowing a flow of fluid (e.g. gas or liquid) near to and/or against the substance, for example where the flow of fluid has a relatively lower temperature than does the substance.
  • a flow of fluid e.g. gas or liquid
  • the method may comprise a step d) of foaming the substance, for example to form an open celled or closed celled foam. Step d) may occur subsequent to or prior to step b).
  • the method may comprise a step e) of reticulating the foam.
  • Step e) may occur prior to or subsequent to step b).
  • Reticulating the foam may comprise addition of heat and/or one or more chemical substance to the foam.
  • the method may comprise a step f) of adding to the mould surface and/or the substance one or more of a flavourant, an aerosol former and nicotine.
  • Adding may comprise contacting the mould surface and/or the substance with one or more of the flavourant, the aerosol former and nicotine.
  • Contacting may comprise spraying, covering and/or dipping.
  • Adding may comprise impregnating the mould surface and/or the substance with one or more of the flavourant, the aerosol former and nicotine.
  • step f) may comprises applying or adding the or each of the one or more of the flavourant, aerosol former and nicotine to the mould surface prior to, subsequent to or simultaneously with step b).
  • the method may comprise a step g) of forming a line of weakness in the substance and/or mould surface, for example to thereby at least partially define first and second portions of the substance.
  • the method may comprise a step h) of separating a or the first portion of the substance from a or the second portion of the substance, for example with a separator.
  • the mould surface may comprise the separator.
  • the mould surface may be integrally formed with the separator.
  • the separator may be positioned in or on the mould surface.
  • the substance may comprise only aerosol-forming substrate.
  • the substance may comprise aerosol-forming substrate and a further material, for example a carrier material.
  • the carrier material and/or the aerosol-forming substrate may comprise the foam (where formed). Where carrier material is foamed to form a foam the aerosol-forming substrate may be provided in or on or embedded in or on the foam of carrier material.
  • the substance may comprise tobacco, for example reconstituted tobacco (e.g. stalks and the like).
  • the substance may comprise nicotine.
  • an article for forming an aerosol comprising a peripheral mould surface circumscribing a moulded aerosol-forming substrate, the article being insertable, in use, into a heating chamber of a device for generating an aerosol.
  • the peripheral mould surface may circumscribe substantially all of or the entire periphery of the article.
  • the aerosol-forming substrate may comprise first and second portions, for example at least partially defined by a frangible portion of the aerosol-forming substrate and/or the peripheral mould surface.
  • the article comprises a cover layer, for example which may comprise or define or provide the peripheral mould surface ( e.g. on an inwardly facing surface thereof).
  • the cover layer may be formed from a polymer such as a food grade plastic and/or a paper such as filter paper. Additionally or alternatively, the cover layer may comprise any other suitable material, for example abaca fibres and the like.
  • the cover layer may comprise cellulose.
  • the cover layer may comprise and/or be at least partially formed from tobacco, for example reconstituted tobacco.
  • the cover layer may comprise plural apertures through its thickness, for example where the plural apertures may be arranged uniformly or randomly.
  • the cover layer may comprise a net or mesh or weave.
  • the cover layer may comprise a solid surface, for example having a region ( e.g.
  • the cover layer may provide an outer layer, e.g. of the article.
  • the article may comprise a further layer over and/or about the cover layer.
  • the further layer (where provided) may comprise a removable or temporary layer, e.g. a layer intended to be removed prior to use of the article.
  • the further layer may be wrapped or otherwise secured over and/or about the cover layer, e.g. subsequent to step c) of a method of manufacturing an article for forming an aerosol.
  • the aerosol-forming substrate comprises nicotine.
  • the aerosol-forming substrate may comprise tobacco.
  • the aerosol-forming substrate may comprise a non-tobacco containing aerosol-forming material.
  • the solid aerosol-forming substrate may comprise, for example, one or more of: powder, granules, pellets, shreds, strands, strips or sheets ( e.g. containing one or more of: herb leaf, tobacco leaf, tobacco ribs, expanded tobacco and homogenised tobacco).
  • the solid aerosol-forming substrate may contain tobacco or non-tobacco volatile flavour compounds, which are released upon heating of the solid aerosol-forming substrate.
  • the aerosol-forming substrate is in the form of a fluid, for example a liquid or a gas
  • the aerosol-forming substrate may contain tobacco or non-tobacco volatile flavour compounds, which are released upon heating of the fluid aerosol-forming substrate.
  • the solid or fluid aerosol-forming substrate may be provided on or embedded in a carrier material, for example a thermally stable carrier material.
  • the carrier material may take the form of a foam, e.g. an open or closed cell foam.
  • the solid or fluid aerosol-forming substrate may be deposited throughout the carrier material, e.g. throughout the volume thereof. Additionally or alternatively, the solid or fluid aerosol-forming substrate may be deposited on the surface of the carrier material in the form of, for example, a sheet, foam, gel or slurry.
  • the solid or fluid aerosol-forming substrate may be deposited on the entire surface of the carrier material, or alternatively, may be deposited in a pattern in order to provide a non-uniform flavour delivery during use.
  • the aerosol-forming substrate may comprise a foam.
  • the foam may be open celled or closed celled.
  • the foam may be a reticulated open celled foam.
  • the foam may be at least partially formed from tobacco, for example from reconstituted tobacco ( e.g. stems and the like).
  • the article for forming an aerosol may comprise a volatile flavour-generating component.
  • the aerosol forming substrate for example and/or the carrier material, where provided
  • the volatile flavour-generating component may be at least partially retained in and/or impregnated into and/or located on the surface of the aerosol-forming substrate and/or a carrier material (if such is provided) and/or the cover layer (where provided) and/or the peripheral mould surface thereof.
  • volatile flavour-generating component' is used to describe any volatile component that is added to an aerosol-forming substrate (for example and/or carrier material, where provided) in order to provide a flavourant.
  • Suitable flavourants include, but are not limited to, materials that contain natural or synthetic menthol, peppermint, spearmint, coffee, tea, spices (such as cinnamon, clove and ginger), cocoa, vanilla, fruit flavours, chocolate, eucalyptus, geranium, eugenol, agave, juniper, anethole, linalool, and the like.
  • menthol is used to describe the compound 2-isopropyl-5-methylcyclohexanol in any of its isomeric forms.
  • Menthol may be used in solid or liquid form.
  • menthol may be provided as particles or granules.
  • the term 'solid menthol particles' may be used to describe any granular or particulate solid material comprising at least approximately 80% menthol by weight.
  • 1.5mg or more of the volatile flavour-generating component is included in the aerosol-forming substrate.
  • the volatile flavour-generating component may be in the form of a liquid or a solid.
  • the volatile flavour-generating component may be coupled to, or otherwise associated with, a support element.
  • the support element may comprise any suitable substrate or support for locating, holding, or retaining the volatile flavour-generating component.
  • the support element may comprise a fibrous support element, which may be saturated or saturatable with fluid, for example a liquid.
  • the volatile flavour-generating component may have any suitable structure in which a structural material releasably encloses a flavourant or flavourants.
  • the volatile flavour-generating component comprises a matrix structure defining a plurality of domains, the flavourant being trapped within the domains until released, for example, when the aerosol-forming substrate is subject to external force.
  • the volatile flavour-generating component may comprise a capsule.
  • the capsule comprises an outer shell and an inner core containing the flavourant.
  • the outer shell is sealed before the application of an external force, but is frangible or breakable to allow the flavourant to be released when the external force is applied.
  • the capsule may be formed in a variety of physical formations including, but not limited to, a single-part capsule, a multi-part capsule, a single-walled capsule, a multi-walled capsule, a large capsule, and a small capsule.
  • the flavourant delivery member may release the flavourant steadily when the aerosol-forming substrate is subject to external force.
  • the volatile flavour-generating component is a capsule arranged to rupture or burst to release the flavourant when the article for forming an aerosol is subject to external force (for example, but not limited to, if the capsule comprises an outer shell and an inner core)
  • the capsule may have any desired burst strength.
  • the burst strength is the force (exerted on the capsule from the outside of the aerosol-forming substrate) at which the capsule will burst.
  • the burst strength may be a peak in the capsule's force versus compression curve.
  • the volatile flavour-generating component may be configured to release the flavourant in response to an activation mechanism.
  • an activation mechanism may include the application of a force to the volatile flavour-generating component, a change in temperature in the volatile flavour-generating component, a chemical reaction, or any combination thereof.
  • the method may comprise a step of adding the volatile flavour-generating component to the substance comprising the aerosol-forming substrate, and/or to the foam (reticulated or otherwise) thereof. Additionally or alternatively, the method may comprise a step of adding the volatile flavour generating component to the cover layer (where provided) and/or to the mould surface thereof.
  • the aerosol-forming substrate comprises an aerosol former.
  • aerosol former is used to describe any suitable known compound or mixture of compounds that, in use, facilitates formation of an aerosol and that is substantially resistant to thermal degradation at the operating temperature of the aerosol-forming substrate.
  • Suitable aerosol formers include, but are not limited to: polyhydric alcohols, such as propylene glycol, triethylene glycol, 1 ,3-butanediol and glycerine; esters of polyhydric alcohols, such as glycerol mono-, di- or triacetate; and aliphatic esters of mono-, di- or polycarboxylic acids, such as dimethyl dodecanedioate and dimethyl tetradecanedioate
  • Preferred aerosol formers are polyhydric alcohols or mixtures thereof, such as propylene glycol, triethylene glycol, 1 ,3-butanediol and, most preferred, glycerine.
  • the aerosol-forming substrate may comprise a single aerosol former.
  • the aerosol-forming substrate may comprise a combination of two or more aerosol formers.
  • the aerosol-forming substrate has an aerosol former content of greater than 5% on a dry weight basis.
  • the aerosol aerosol-forming substrate may have an aerosol former content of between approximately 5% and approximately 30% on a dry weight basis.
  • the aerosol-forming substrate has an aerosol former content of approximately 20% on a dry weight basis.
  • an article for forming an aerosol comprising a peripheral surface circumscribing an aerosol-forming substrate, the article being insertable, in use, into a heating chamber of a device for generating an aerosol, wherein the aerosol-forming substrate comprises first and second portions at least partially defined by a frangible portion of the aerosol-forming substrate and/or of the peripheral surface.
  • the frangible portion may comprise a separator and/or line of weakness in the aerosol-forming substrate and/or the peripheral surface between the first and second portions.
  • the frangible portion e.g. the separator and/or line of weakness
  • the aerosol-forming substrate can be separated by a user into the first and second portions and for each to therefore be used, in a device for generating an aerosol, separately.
  • the article can provide multiple aerosol-forming cycles in the device for generating an aerosol.
  • a relatively reduced number of articles need be carried by a user of such a device, compared with prior art articles for forming an aerosol.
  • carrying of articles for forming an aerosol according to the invention is made relatively easier and less intrusive than is the case with prior art articles for forming an aerosol.
  • articles for forming an aerosol according to the invention occupy a relatively reduced volume than do the plural prior art articles required to provide the same number of aerosol-forming cycles. Further, articles for forming an aerosol according to the invention may generate less noise during transport thereof than do plural prior art articles retained in a case or pack.
  • the peripheral surface may comprise a peripheral mould surface, for example circumscribing a moulded aerosol-forming substrate.
  • the article may comprise a cover layer which may comprise or define or be the peripheral surface (e.g. the peripheral mould surface).
  • the cover layer may be (or comprise attributes) as described elsewhere herein.
  • the first and second portions may have substantially similar shapes and/or volumes.
  • the article and/or the aerosol-forming substrate and/or the first portion may have a substantially cylindrical shape.
  • the article and/or the aerosol-forming substrate and/or the first portion may have a diameter (for example in cross-section) and a length ( e.g. a longitudinal dimension).
  • the article for forming an aerosol and/or the aerosol-forming substrate and/or the first portion may have a diameter of at least 5 mm, for example a diameter of between approximately 5 mm and approximately 12 mm, say of between approximately 5 mm and approximately 10 mm or of between approximately 6 mm and approximately 8 mm.
  • the article for forming an aerosol and/or the aerosol-forming substrate and/or the first portion may have an external diameter of 7.2 mm +/- 10%.
  • the article for forming an aerosol and/or the aerosol-forming substrate and/or the first portion may have a length of between approximately 30 mm and approximately 100 mm, say approximately 45 mm. In embodiments, the article for forming an aerosol and/or the aerosol-forming substrate and/or the first portion may have a length of between approximately 70 mm and 120 mm.
  • the term 'diameter' is used to describe the maximum dimension in the transverse direction of the article for forming an aerosol.
  • the term 'length' is used to describe the maximum dimension in the longitudinal direction of the article for forming an aerosol.
  • the term 'longitudinal' is used to describe the direction between ends ( e.g. upstream and downstream ends) of the article for forming an aerosol and the term 'transverse' is used to describe the direction perpendicular to the longitudinal direction.
  • the terms 'upstream' and 'downstream' are used to describe the relative positions of elements, or portions of elements, of the article for forming an aerosol in relation to the direction in which a user draws fluid through the article during use thereof.
  • the article and/or the aerosol-forming substrate and/or first portion may have a first major surface which is substantially flat.
  • the article and/or the aerosol-forming substrate and/or the first portion may have a second major surface which is substantially flat.
  • the first and second major surfaces may be substantially parallel to one another.
  • the article and/or the aerosol-forming substrate and/or the first portion may have a substantially parallelepiped shape.
  • the article and/or the aerosol-forming substrate and/or the first portion may have a width, a length and a thickness, for example where the width, length and thickness are measured in a direction perpendicular to one another.
  • the thickness may comprise the distance between the first and second major surfaces, where provided.
  • the width and/or length of the article and/or the aerosol-forming substrate and/or the first portion may have a ratio to the thickness of at least 2:1, for example at least 3:1, 4:1, 5:1, 6:1, 7:1, 8:1, 9:1 or 10:1.
  • the width and/or the length of the article and/or the aerosol-forming substrate and/or the first portion may be between approximately 2 mm and 120 mm, for example between approximately 3, 4, 5, 6, 7, 8, 9, 10 and 11, 12 , 13, 14, 15, 16, 17, 18, 19, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, 100, 105, 110, 115, 120 mm.
  • the thickness of the article and/or the aerosol-forming substrate and/or the first portion may be between approximately 0.5 mm and 15 mm, for example between approximately 0.5 or 1.0 mm and 1.5, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0, 6.0, 7.0, 8.0, 9.0, 10.0, 11.0 or 12.0 mm.
  • the line of weakness may comprise a continuous line or an interrupted line.
  • the line of weakness may be substantially straight. Alternatively, the line of weakness may be at least partially curved.
  • the line of weakness may extend only partially through the thickness or diameter.
  • the line of weakness may extend through the thickness or diameter.
  • the line of weakness may extend across only part of the width. Alternatively, the line of weakness may extend across the entire width.
  • the line of weakness may comprise plural lines of weakness (e.g. first and second lines of weakness).
  • the first line of weakness may be spaced from the second line of weakness.
  • the first line of weakness may be substantially parallel or perpendicular to the second line of weakness.
  • the first line of weakness may be spaced from the second line of weakness and/or from an edge of the article by a distance substantially equal to a dimension of the first and/or second portion (for example a thickness, width or length thereof).
  • one line of weakness may comprise a continuous line and another of the plural lines of weakness may comprise an interrupted line.
  • one or more of the plural lines of weakness may have different properties (for example in respect of extending through the article thickness or diameter or across the width) than does one or more of the other of the plural lines of weakness. Additionally or alternatively, one or more of the plural lines of weakness may have a different tear strength than does one or more of the other of the plural lines of weakness.
  • the separator may comprise a part or portion of the peripheral surface, for example may be formed integrally therewith or attached thereto.
  • the separator may comprise a discrete component, e.g. discrete from the peripheral surface.
  • the separator may be configured or arranged to completely separate the first portion from the second portion.
  • the separator may be configured or arranged to only partially separate the first portion from the second portion ( e.g. such that the first and second portions are at least partially attached or conjoined).
  • the separator may comprise a line of weakness, for example a line of weakness may be provided in or through at least part of the separator.
  • the separator may be formed from one or more thermally stable materials, e.g. which may experience chemical change and/or phase change at a temperature above the temperature at which volatile compounds are released from the aerosol-forming substrate.
  • the separator may comprise a polymer and/or a wood material or the like.
  • the separator may be formed from a material selected to experience a chemical change and/or a phase change at a temperature at or below the temperature at which volatile compounds are released from the aerosol-forming substrate.
  • the separator may comprise a volatile flavour-generating component, for example an additive, e.g. a flavourant.
  • Step c) may comprise forming a line of weakness in the aerosol-forming substrate to thereby at least partially define first and second portions thereof; and/or at least partially separating the aerosol-forming substrate into first and second portions ( e.g. the first and second portions).
  • step c) may occur prior to step b), simultaneously thereto or subsequent thereto.
  • Forming a line of weakness may comprise pushing a forming tool into the aerosol-forming substrate to locally deform and/or cut into it, for example pushing the forming tool against the surface for defining the periphery of the article to thereby locally deform and/or cut into the aerosol-forming substrate.
  • Step c) may comprise pushing forming tools against opposed sides of the aerosol-forming substrate and/or the surface for defining the periphery of the article, e.g. at least partially simultaneously or sequentially.
  • the aerosol-forming substrate may be formed by extrusion or moulding. Where the aerosol-forming substrate is formed by moulding, this moulding may occur at least partially in the surface for defining the periphery of the article (e.g. where the surface may comprise a mould surface). Where the aerosol-forming substrate is formed by moulding the line of weakness may be at least partially formed during moulding of the aerosol-forming substrate.
  • the aerosol-forming substrate is at least partially separated e into first and second portions by a separator
  • this may comprise providing a separator between the first and second portions.
  • the separator may be pushed into the aerosol-forming substrate.
  • the aerosol-forming substrate may be at least partially formed about the separator, e.g. moulded thereabout.
  • Step d) of arranging the surface and aerosol-forming substrate such that the surface circumscribes a periphery of the aerosol-forming substrate may comprise wrapping the aerosol-forming substrate with the surface. Additionally or alternatively, step d) may comprise moulding the aerosol-forming substrate in the surface, for example depositing at least partially fluid aerosol-forming substrate in the surface and allowing or causing the aerosol-forming substrate to at least partially solidify.
  • a method of using an article for forming an aerosol comprising: providing a device for generating an aerosol, the device comprising a heating chamber; providing an article for forming an aerosol comprising aerosol-forming substrate circumscribed by a peripheral surface or mould surface; inserting the article for forming an aerosol into the heating chamber of the device for generating an aerosol; and generating an aerosol from the aerosol-forming substrate of the article for forming an aerosol.
  • the article for forming an aerosol may comprise a cover layer, for example which may comprise or define the peripheral surface or mould surface.
  • the method of use may comprise removing the cover layer prior to insertion of the article for forming an aerosol into the heating chamber of the device for generating an aerosol.
  • the article for forming an aerosol may be inserted into the heating chamber of the device for generating an aerosol with the cover layer still providing a surface or mould surface circumscribing the periphery of the aerosol-forming substrate.
  • the article 1 comprises a peripheral cover layer 2 comprising or defining a mould surface 20 which circumscribes a moulded aerosol-forming substrate 3.
  • the cover layer 2 is formed from paper and has the form of a netting or weave, with plural apertures through its thickness, in this embodiment. In embodiments, however, the cover layer 2 may comprise a solid surface absent or provided with apertures and/or may be formed from any suitable material, for example polymer material and/or paper, etc.
  • the aerosol-forming substrate 3 comprises reticulated open-celled foam of reconstituted tobacco (e.g. stems and the like), in this embodiment.
  • the aerosol-forming substrate 3 may be supported or carried by a carrier substance which is itself in the form of a foam (e.g. an open-celled or reticulated open-celled foam).
  • a carrier substance e.g. an open-celled or reticulated open-celled foam
  • the aerosol-forming substrate 3 may be in any suitable form for being retained by the carrier substance.
  • the aerosol-forming substrate 3 may be in the form of a solid ( e.g. a powder) or a fluid.
  • the aerosol-forming substrate 3 is impregnated with nicotine and glycerine, in this embodiment.
  • the carrier substance may be impregnated with nicotine and/or glycerine.
  • any suitable additive may be impregnated into the aerosol-forming substrate 3 (or carrier substance, where provided) in addition to or instead of the nicotine and glycerine.
  • suitable additives include, but are not limited to, tobacco and non-tobacco fibres, aerosol formers, humectants, plasticisers, volatile flavour-generating components, flavourants, fillers, aqueous and non-aqueous solvents and combinations thereof.
  • the cover layer 2 may be impregnated with nicotine, glycerine and/or any other suitable additive, additionally or alternatively.
  • nicotine, glycerine and/or any other suitable additive may be provided on the mould surface 20 of the cover layer 2, additionally or alternatively.
  • FIG. 2 there is shown a flow diagram illustrating a method of manufacturing the article for forming an aerosol shown in Figure 1 .
  • the method comprises a first step S1 of providing a cover layer 2 comprising or defining a mould surface 20, which is shaped to define the periphery of an article 1 for forming an aerosol.
  • a substance e.g. an at least partially liquid substance, comprising aerosol-forming substrate is introduced onto the mould surface 20 of the cover layer 2.
  • the aerosol-forming substrate comprises tobacco, for example reconstituted or waste tobacco products (such as stems and the like).
  • the substance may be a slurry, which is is formed in a conventional manner, as is well known to one skilled in the art.
  • the substance, e.g. slurry is formed into a foam in a third step S3 via foaming with a gas (e.g. a gas blown into the substance and/or a gas generated within the substance) whilst the substance, e.g. slurry, is located on the mould surface 20, in this embodiment.
  • a gas e.g. a gas blown into the substance and/or a gas generated within the substance
  • the substance, e.g. slurry may be foamed before it is introduced onto the mould surface 20 in second step S2.
  • the foamed material is reticulated in a fourth step S4, which also occurs subsequent to introducing the substance, e.g. slurry, onto the mould surface 20, in this embodiment.
  • the fourth step S3 of reticulation may occur prior to contacting the mould surface 20.
  • Nicotine and glycerine are provided on the mould surface 20 prior to introducing the substance, e.g. slurry, thereonto, in the second step S2.
  • the nicotine and glycerine may be sprayed, rolled, dip-coated or otherwise deposited onto the mould surface 20.
  • the nicotine and glycerine may be provided on the mould surface 20 simultaneously or sequentially.
  • the nicotine and glycerine impregnate into the substance, e.g. slurry, when it is introduced onto the mould surface 20 and, consequently, into the foamed aerosol-forming substrate 3, in this embodiment. In embodiments, however, such impregnation may comprise providing the nicotine and/or glycerine directly into the substance, e.g.
  • the cover layer 2 may be formed from a material which is at least partially absorbent and may be configured to at least partially retain the nicotine and/or the glycerine (and/or any other suitable additive).
  • the reticulated foam aerosol-forming substrate is then cured or is otherwise dried or allowed to dry. In this way, an article 1 for forming an aerosol is formed.
  • FIG. 3 and 4 there is shown an article 11 for forming an aerosol according to a further embodiment of the invention, wherein like references preceded by a '1' refer to like features which will not be described herein further.
  • the article 11 shown in Figures 3 and 4 differs from the article 1 shown in Figure 1 in that the cross-section has a different shape (the article 11 has a rectangular cross-sectional shape instead of the circular cross-sectional shape of the article 1) and that a line of weakness W (thereby providing a frangible portion) is provided in the aerosol-forming substrate 13.
  • the line of weakness W defines first and second portions 13a, 13b of the aerosol-forming substrate 13, as can be seen in particular in Figure 4 .
  • the first and second portions 13a, 13b have a generally similar shape and volume, in this embodiment. In embodiments, however, the first and second portions 13a, 13b may have different shapes and/or volumes.
  • the line of weakness W comprises a continuous and uninterrupted line which extends across a width w of the article 11 in this embodiment.
  • the line of weakness W does not extend through the thickness t of the aerosol-forming substrate 13, in this embodiment, such that the first and second portions 13a, 13b remain partially joined to one another.
  • a user may preferentially separate the first and second portions 13a, 13b from one another at the line of weakness W.
  • the first portion 13a of the aerosol-forming substrate 13 may then be used in a device for generating an aerosol (not shown) whilst the second portion 13b is retained for future use therein.
  • a portion of the cover layer 12 extends into the line of weakness W, thereby forming a separator S.
  • the article 11 for forming an aerosol is formed by the method shown in Figure 5 .
  • a cover layer 12 is provided in a first step S5 .
  • an aerosol-forming substrate 13 is provided in a second step S6 .
  • the cover layer 12 is wrapped around (or otherwise disposed about) the aerosol-forming substrate 13 in a third step S7.
  • a portion of the cover layer 12, in the shape and location of a desired line of weakness W, is then pressed into the aerosol-forming substrate 13 in a fourth step S8, using a pressing tool (not shown) shaped and sized to form the line of weakness W.
  • the pressure acting against the aerosol-forming substrate 13 causes it to deform and form a line of weakness W.
  • the cover layer 12 may be at least partially formed from a material which may at least partially retract from the line of weakness W after its formation (and thereby return to or toward its shape prior to application of pressure thereagainst).
  • the aerosol-forming substrate 13 may comprise more than one line of weakness W, for example two, three, four or more lines of weakness.
  • one or more of the additional lines of weakness may be substantially parallel to or perpendicular to the first line of weakness W.
  • the line of weakness W may extend across only a part of the width w of the article 11. Additionally or alternatively, the line of weakness W may not comprise a continuous line but may instead include one or more interruptions along its length. Where the line of weakness W extends only partly across the width w of the article 11 and/or comprises a non-continuous line thereacross, the line of weakness W may extend through the thickness t of the aerosol-forming substrate 13. Where the line of weakness W extends through the thickness t of the aerosol-forming substrate 13 the portion of the cover layer 12 extending into the line of weakness W may contact and/or be joined to the cover layer 12 on the obverse face of the aerosol-forming substrate 13. Such joining may be accomplished by adhesive bonding, one or more fixings and/or by thermally bonding the portion of the cover layer 12 within the line of weakness W to the cover layer 12 on the obverse face of the aerosol-forming substrate 13.
  • the line of weakness W may be formed by pressing the cover layer 12 into the aerosol-forming substrate 13 on opposite sides thereof, either simultaneously or sequentially.
  • the line of weakness W is formed only by pressing the cover layer into the aerosol-forming substrate this need not be the case and, instead, the line of weakness may be at least partially formed prior to covering the aerosol-forming substrate 13 with the cover layer 12.
  • the aerosol-forming substrate 13 may be directly pressed so as to form the line of weakness W.
  • the aerosol-forming substrate may be moulded into shape in a mould comprising a projection arranged to at least partially define the line of weakness W.
  • the line of weakness W may be formed by piercing the cover layer 12 with one or more piercing edges.
  • the line of weakness W may extend across the width w and through the thickness t of the aerosol-forming substrate 13, thereby separating the first and second portions 13a, 13b from one another.
  • the portion of the cover layer 12 in the line of weakness W may be at least partially joined or affixed to the cover layer 12 on the obverse face of the aerosol-forming substrate 13, where the first and second portions 13a, 13b are separate from one another.
  • the cover layer 12 comprises such a joined portion between the first and second portions
  • the joined portion of the cover layer 12 (comprising a separator) may be provided with a line of weakness.
  • one or more apertures may be provided through the joined portion of the cover layer. These apertures may be formed by a blade or otherwise sharp-edged tool.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Molecular Biology (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
  • Manufacture Of Tobacco Products (AREA)
EP19739283.0A 2018-07-26 2019-07-11 Article for forming an aerosol Active EP3826478B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP18185904 2018-07-26
PCT/EP2019/068738 WO2020020657A1 (en) 2018-07-26 2019-07-11 Article for forming an aerosol

Publications (3)

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EP3826478A1 EP3826478A1 (en) 2021-06-02
EP3826478B1 true EP3826478B1 (en) 2023-08-30
EP3826478C0 EP3826478C0 (en) 2023-08-30

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JP (1) JP7493490B2 (ko)
KR (1) KR20210034002A (ko)
CN (1) CN112384084B (ko)
BR (1) BR112021000497A2 (ko)
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WO2023089859A1 (ja) * 2021-11-19 2023-05-25 日本たばこ産業株式会社 香味吸引物品用材料、加熱型香味吸引物品、及び香味吸引物品用材料の製造方法
CN115211585A (zh) * 2022-08-19 2022-10-21 云南中烟工业有限责任公司 一种带有通道结构的多孔气溶胶生成基质棒及其制备方法和包含其的气溶胶生成制品
CN115191644A (zh) * 2022-08-22 2022-10-18 云南中烟工业有限责任公司 一种烟草本香气溶胶生成基质棒的制备方法

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Publication number Priority date Publication date Assignee Title
US3968804A (en) * 1974-05-20 1976-07-13 Amf Incorporated Extruded tobacco sheet
US5129409A (en) * 1989-06-29 1992-07-14 R. J. Reynolds Tobacco Company Extruded cigarette
US5249586A (en) * 1991-03-11 1993-10-05 Philip Morris Incorporated Electrical smoking
AU2004289248B2 (en) * 2003-11-07 2012-05-03 U.S. Smokeless Tobacco Company Llc Tobacco compositions
US9675109B2 (en) * 2005-07-19 2017-06-13 J. T. International Sa Method and system for vaporization of a substance
US20160345631A1 (en) * 2005-07-19 2016-12-01 James Monsees Portable devices for generating an inhalable vapor
UA119333C2 (uk) * 2013-12-05 2019-06-10 Філіп Морріс Продактс С.А. Нагрівний виріб, що генерує аерозоль, з теплорозподілювальною обгорткою
UA118457C2 (uk) * 2013-12-05 2019-01-25 Філіп Морріс Продактс С.А. Нагрівний виріб, що генерує аерозоль, з перегородкою для повітряного потоку
DK3166426T3 (en) * 2014-07-11 2018-10-29 Philip Morris Products Sa AEROSOL GENERATING SYSTEM COMPREHENSIVE PATTERN DETECTION
EP3166427B1 (en) * 2014-07-11 2019-04-17 Philip Morris Products S.a.s. Aerosol-forming cartridge with protective foil

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PL3826478T3 (pl) 2024-01-15
CN112384084B (zh) 2022-10-28
EP3826478A1 (en) 2021-06-02
CN112384084A (zh) 2021-02-19
US20210282449A1 (en) 2021-09-16
KR20210034002A (ko) 2021-03-29
BR112021000497A2 (pt) 2021-04-06
WO2020020657A1 (en) 2020-01-30
JP7493490B2 (ja) 2024-05-31
EP3826478C0 (en) 2023-08-30
JP2021530995A (ja) 2021-11-18

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