WO2022013542A1 - Article destiné à être utilisé dans un système de fourniture d'aérosol - Google Patents

Article destiné à être utilisé dans un système de fourniture d'aérosol Download PDF

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Publication number
WO2022013542A1
WO2022013542A1 PCT/GB2021/051792 GB2021051792W WO2022013542A1 WO 2022013542 A1 WO2022013542 A1 WO 2022013542A1 GB 2021051792 W GB2021051792 W GB 2021051792W WO 2022013542 A1 WO2022013542 A1 WO 2022013542A1
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WO
WIPO (PCT)
Prior art keywords
consumable
aerosol
abrasive
article
wrapper
Prior art date
Application number
PCT/GB2021/051792
Other languages
English (en)
Inventor
Jack QUARMBY
Charles LEONI
Original Assignee
Nicoventures Trading Limited
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 Limited filed Critical Nicoventures Trading Limited
Publication of WO2022013542A1 publication Critical patent/WO2022013542A1/fr

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Classifications

    • 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
    • A24F40/85—Maintenance, e.g. cleaning

Definitions

  • the present invention relates to an article for use in a non-combustible aerosol provision system and a non-combustible aerosol provision system including an article.
  • Certain tobacco industry products produce an aerosol during use, which is inhaled by a user.
  • tobacco heating devices heat an aerosol generating substrate such as tobacco to form an aerosol by heating, but not burning, the substrate.
  • an article for insertion into an aerosol provision device comprising a heating assembly having a wall that at least partially defines a chamber for receiving a consumable for heating during use of the device, wherein heating said consumable causes deposits of condensate to form on said wall, the article comprising an inner core wrapped in a wrapper that comprises an abrasive surface configured to dislodge said deposits from the wall by abrasion with said wall.
  • the abrasive surface may comprise at least one protrusion.
  • the abrasive surface may be corrugated.
  • the abrasive surface may be embossed into the wrapper.
  • the abrasive surface may comprise abrasive particles embedded in and/or adhered to the wrapper.
  • the abrasive particles may comprise fibres.
  • the abrasive surface may comprise bristles extending in a direction perpendicular to a longitudinal axis of the article.
  • a system comprising an aerosol provision device and an article according to embodiments of the invention, the aerosol provision device comprising a heating assembly having a wall that at least partially defines a chamber for receiving a consumable of the aerosol provision device, said wall being configured to heat a consumable received within said chamber during use.
  • a pack comprising consumables of aerosol generating material for use in an aerosol provision device and an article according to embodiments of the invention.
  • a consumable for insertion into an aerosol provision device comprising a heating assembly having a wall that at least partially defines a chamber for receiving said consumable for heating during use of the device, wherein heating said consumable causes deposits of condensate to form on said wall, the consumable comprising an aerosol generating material and an abrasive outer surface configured to dislodge said deposits from the wall by abrasion with said wall.
  • the aerosol generating material may be wrapped in a wrapper, said abrasive outer surface being an outer surface of the wrapper.
  • the abrasive outer surface may comprise at least one protrusion.
  • the abrasive outer surface may comprise a corrugated outer surface.
  • the abrasive outer surface may comprise abrasive particles embedded in and/or adhered to an outer surface of the consumable.
  • the abrasive outer surface may comprise abrasive particles embedded in and/or adhered to the outer surface of the wrapper.
  • the abrasive particles may comprise fibres.
  • the abrasive surface may comprise bristles extending in a direction perpendicular to a longitudinal axis of the article.
  • the abrasive outer surface may be an embossed outer surface of the wrapper.
  • the abrasive outer surface may comprise a flange that upstands perpendicular to a longitudinal axis of the consumable.
  • a system comprising an aerosol provision device and a consumable according to embodiments of the invention, the aerosol provision device comprising a heating assembly having a wall that at least partially defines a chamber for receiving a consumable of the aerosol provision device, said wall being configured to heat a consumable received within said chamber during use.
  • a pack comprising one or more consumables according to embodiments of the invention.
  • a method of making an article for insertion into an aerosol provision device comprising: providing a core of material; and wrapping said core of material in a wrapper comprising an abrasive outer surface.
  • a method of making a consumable for insertion into an aerosol provision device comprising: providing aerosol generating material; and wrapping said aerosol generating material in a wrapper comprising an abrasive outer surface.
  • Figure 1 schematically illustrates an aerosol provision device
  • Figure 2 schematically illustrates an aerosol provision device and a consumable
  • FIG. 3 illustrates an article according to embodiments of the invention
  • Figures 4A to 4E illustrate various abrasive surfaces according to embodiments of the invention
  • Figure 5 illustrates a consumable according to embodiments of the invention
  • Figure 6 illustrates another consumable according to embodiments of the invention
  • Figure 7 schematically illustrates a consumable.
  • a “non-combustible” aerosol provision system is one where a constituent aerosol-generating material of the aerosol provision system (or component thereof) is not combusted or burned in order to facilitate delivery of at least one substance to a user.
  • the non-combustible aerosol provision system comprises an aerosol-generating material heating system, also known as a heat-not-burn system.
  • an aerosol-generating material heating system also known as a heat-not-burn system.
  • An example of such a system is a tobacco heating system.
  • the non-combustible aerosol provision system comprises 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 non-combustible aerosol provision system may comprise a non combustible aerosol provision device and a consumable for use with the non- combustible aerosol provision device.
  • the disclosure relates to consumables comprising aerosol generating 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 or an exothermic power source.
  • the exothermic power source comprises a carbon substrate which may be energised so as to distribute power in the form of heat to an aerosol-generating material or to a heat transfer material in proximity to the exothermic 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 aerosol-modifying agent.
  • the substance to be delivered comprises an active substance.
  • the active substance as used herein may be a physiologically active material, which is a material intended to achieve or enhance a physiological response.
  • the active substance may for example be selected from nutraceuticals, nootropics, psychoactives.
  • the active substance may be naturally occurring or synthetically obtained.
  • the active substance may comprise for example nicotine, caffeine, taurine, theine, vitamins such as B6 or Bi2 or C, melatonin, cannabinoids, or constituents, derivatives, or combinations thereof.
  • the active substance may comprise one or more constituents, derivatives or extracts of tobacco, cannabis or another botanical.
  • the active substance comprises nicotine.
  • the active substance comprises caffeine, melatonin or vitamin Bi2.
  • the active substance may comprise or be derived from one or more botanicals or constituents, derivatives or extracts thereof.
  • the term "botanical” includes any material derived from plants including, but not limited to, extracts, leaves, bark, fibres, stems, roots, seeds, flowers, fruits, pollen, husk, shells or the like.
  • the material may comprise an active compound naturally existing in a botanical, obtained synthetically. The material may be in the form of liquid, gas, solid, powder, dust, crushed particles, granules, pellets, shreds, strips, sheets, or the like.
  • Example botanicals are tobacco, eucalyptus, star anise, hemp, cocoa, cannabis, fennel, lemongrass, peppermint, spearmint, rooibos, chamomile, flax, ginger, ginkgo biloba, hazel, hibiscus, laurel, licorice (liquorice), matcha, mate, orange skin, papaya, rose, sage, tea such as green tea or black tea, thyme, clove, cinnamon, coffee, aniseed (anise), basil, bay leaves, cardamom, coriander, cumin, nutmeg, oregano, paprika, rosemary, saffron, lavender, lemon peel, mint, juniper, elderflower, vanilla, wintergreen, beefsteak plant, curcuma, turmeric, sandalwood, cilantro, bergamot, orange blossom, myrtle, cassis, valerian, pimento, mace, damien, marjoram, olive, lemon
  • the mint maybe chosen from the following mint varieties: Mentha Arventis, Mentha c.v., Mentha niliaca, Mentha piperita, Mentha piperita citrata c.v., Mentha piperita c.v, Mentha spicata crispa, Mentha cardifolia, Memtha longifolia, Mentha suaveolens variegata, Mentha pulegium, Mentha spicata c.v. and Mentha suaveolens
  • the active substance comprises or is derived from one or more botanicals or constituents, derivatives or extracts thereof and the botanical is tobacco.
  • the active substance comprises or derived from one or more botanicals or constituents, derivatives or extracts thereof and the botanical is selected from eucalyptus, star anise, cocoa and hemp.
  • the active substance comprises or derived from one or more botanicals or constituents, derivatives or extracts thereof and the botanical is selected from rooibos and fennel.
  • the substance to be delivered comprises a flavour.
  • flavour and “flavourant” refer to materials which, where local regulations permit, maybe used to create a desired taste, aroma or other somatosensorial sensation in a product for adult consumers. They may include naturally occurring flavour materials, botanicals, extracts of botanicals, synthetically obtained materials, or combinations thereof (e.g., tobacco, cannabis, licorice (liquorice), hydrangea, eugenol, Japanese white bark magnolia leaf, chamomile, fenugreek, clove, maple, matcha, menthol, Japanese mint, aniseed (anise), cinnamon, turmeric, Indian spices, Asian spices, herb, wintergreen, cherry, berry, red berry, cranberry, peach, apple, orange, mango, clementine, lemon, lime, tropical fruit, papaya, rhubarb, grape, durian, dragon fruit, cucumber, blueberry, mulberry, citrus fruits, Drambuie, bourbon, scotch, whiskey
  • the flavour comprises menthol, spearmint and/or peppermint.
  • the flavour comprises flavour components of cucumber, blueberry, citrus fruits and/or redberry.
  • the flavour comprises eugenol.
  • the flavour comprises flavour components extracted from tobacco.
  • the flavour comprises flavour components extracted from cannabis.
  • the flavour may comprise a sensate, which is intended to achieve a somatosensorial sensation which are usually chemically induced and perceived by the stimulation of the fifth cranial nerve (trigeminal nerve), in addition to or in place of aroma or taste nerves, and these may include agents providing heating, cooling, tingling, numbing effect.
  • a suitable heat effect agent may be, but is not limited to, vanillyl ethyl ether and a suitable cooling agent may be, but not limited to eucolyptol, WS-3.
  • Aerosol-generating 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 gel which may or may not contain an active substance and/or flavourants. In some embodiments, the aerosol - generating material may comprise an “amorphous solid”, which may alternatively be referred to as a “monolithic solid” (i.e. non-fibrous). In some embodiments, the amorphous solid may be a dried gel. The amorphous solid is a solid material that may retain some fluid, such as liquid, within it.
  • the aerosol- generating material may for example comprise from about 50wt%, 6owt% or 70wt% of amorphous solid, to about 90wt%, 95wt% or ioowt% of amorphous solid.
  • 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-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 maybe 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.
  • the support comprises a susceptor.
  • the susceptor is embedded within the material. In some alternative embodiments, the susceptor is on one or either side of the material.
  • a consumable is an article comprising or consisting of aerosol-generating material, part or all of which is intended to be consumed during use by a user.
  • a consumable may comprise one or more other components, such as an aerosol-generating material storage area, an aerosol-generating material transfer component, an aerosol generation area, a housing, a wrapper, a mouthpiece, a filter and/or an aerosol-modifying agent.
  • a consumable may also comprise an aerosol generator, such as a heater, that emits heat to cause the aerosol-generating material to generate aerosol in use.
  • the heater may, for example, comprise combustible material, a material heatable by electrical conduction, or a susceptor.
  • An aerosol-modifying agent is a substance, typically located downstream of the aerosol generation area, that is configured to modify the aerosol generated, for example by changing the taste, flavour, acidity or another characteristic of the aerosol.
  • the aerosol- modifying agent may be provided in an aerosol-modifying agent release component, that is operable to selectively release the aerosol-modifying agent
  • the aerosol-modifying agent may, for example, be an additive or a sorbent.
  • the aerosol-modifying agent may, for example, comprise one or more of a flavourant, a colourant, water, and a carbon adsorbent.
  • the aerosol-modifying agent may, for example, be a solid, a liquid, or a gel.
  • the aerosol-modifying agent maybe in powder, thread or granule form.
  • the aerosol-modifying agent may be free from filtration material.
  • 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 aerosol generator is configured to cause an aerosol to be generated from the aerosol-generating material without heating.
  • the aerosol generator maybe configured to subject the aerosol-generating material to one or more of vibration, increased pressure, or electrostatic energy.
  • a non-combustible aerosol provision device 1 (herein referred to simply as the ‘device 1’) is shown schematically in Figure 1.
  • the device 1 comprises a wall 2 that defines a rod shaped consumable receiving space 3 (herein referred to simply as ‘receiving space 3’); and a heater 4 configured to heat the consumable receiving space 3.
  • the device further comprises a power source 7 and a control unit 8 which are configured to power and control the heater 4, respectively.
  • the power source 7 may be, for example, a battery 7, such as a rechargeable battery or a non-rechargeable battery.
  • suitable batteries include, for example, a lithium battery (such as a lithium-ion battery), a nickel battery (such as a nickel-cadmium battery), and an alkaline battery.
  • the various components of the device including the heater 4, receiving space 3, battery 7 and control unit 8 are retained within a housing 6.
  • the device 1 is of the approximate size and shape to allow a user to hold the device 1 in a single hand.
  • a consumable 11 comprising an aerosol generating material is inserted into the receiving space 3 and heated by the heater 4.
  • the heat causes one or more volatiles from the aerosol-generating material to form an aerosol.
  • a mouth end 12 of the consumable protrudes from the device as illustrated by Figure 2.
  • a user draws on the mouth end 12 of the consumable 11, in the manner of a conventional cigarette.
  • the device further comprises an inlet 9 as shown in Figure 1.
  • the device 1 further comprises a first activation button 13 to allow a user to turn the device 1 on or off; and a second activation button 14 to activate the heater 4.
  • the inlet 9 may comprise a pressure sensor (not shown) which acts as a ‘puff sensor’.
  • the puff sensor is configured to detect a drop in pressure at the air inlet 9 which indicates that a user is drawing on a consumable 11 located within the receiving space 3.
  • the device 1 is thereby configured to activate the heater 4 in response to a drop in pressure detected at the air inlet 9.
  • the control unit 8 is configured to direct electrical energy from the battery 7 to activate the heater in response to an input signal.
  • the input signal is generated when the second activation button 14 is pressed by the user. In another embodiment, the input signal is generated when a pressure drop is detected at the inlet 9 by a pressure sensor.
  • the heater 4 may be an inductive heating assembly 4 and comprise various components to heat the consumable receiving space via an inductive heating process. Induction heating is a process of heating an electrically conducting object (such as a susceptor) by electromagnetic induction.
  • An induction heating assembly may comprise an inductive element, for example, one or more inductor coils, and a device for passing a vaiying electric current, such as an alternating electric current, through the inductive element. The varying electric current in the inductive element produces a varying magnetic field.
  • the varying magnetic field penetrates a susceptor suitably positioned with respect to -lithe inductive element, and generates eddy currents inside the susceptor.
  • the susceptor has electrical resistance to the eddy currents, and hence the flow of the eddy currents against this resistance causes the susceptor to be heated by Joule heating.
  • heat may also be generated by magnetic hysteresis losses in the susceptor, i.e. by the varying orientation of magnetic dipoles in the magnetic material as a result of their alignment with the varying magnetic field.
  • inductive heating as compared to heating by conduction for example, heat is generated inside the susceptor, allowing for rapid heating. Further, there need not be any physical contact between the inductive heater and the susceptor, allowing for enhanced freedom in construction and application.
  • the inductive heating assembly comprises a susceptor 23 and an inductor coil 24.
  • the inductor coil 24 is made from an electrically conducting material.
  • the inductor coil 24 is made from Litz wire/cable which is wound in a helical fashion about the susceptor 23.
  • Litz wire comprises a plurality of individual wires which are individually insulated and are twisted together to form a single wire. Litz wires are designed to reduce the skin effect losses in a conductor.
  • the inductor coil 24 is made from copper Litz wire which has a rectangular cross section. In other examples the Litz wire can have other shape cross sections, such as circular.
  • the inductor coil 24 is configured to generate a varying magnetic field for heating the susceptor 23.
  • the susceptor 23 of the illustrated embodiment is cylindrical and hollow and forms the wall 2 that defines the receiving space 3 within which the consumable 11 is received.
  • the consumable 11 can be inserted into the susceptor 23.
  • the susceptor 23 is tubular, with a circular cross section.
  • the susceptor 23 may be made from one or more materials.
  • the susceptor 23 comprises carbon steel having a coating of Nickel or Cobalt.
  • the device 1 may further comprise an insulating member (not shown).
  • the insulating member may be generally tubular and disposed between the susceptor 23 and the inductor coil 24.
  • the insulating member may be constructed from any insulating material, such as plastic for example.
  • the insulating member is constructed from polyether ether ketone (PEEK).
  • PEEK polyether ether ketone
  • the outer surface of the susceptor 23 maybe spaced apart from the inner surface of the inductor coil 24 by a distance, measured in a direction perpendicular to a longitudinal axis of the susceptor 23. In one particular example, the distance is about 3 mm to 4mm, about 3-3.5mm, or about 3.25mm.
  • the outer surface of the insulating member may be spaced apart from the inner surface of the inductor coil 24 by a distance, measured in a direction perpendicular to a longitudinal axis of the susceptor 23. In one particular example, the distance is about 0.05 mm. In another example, the distance is substantially omm, such that the inductor coil 24 abuts and touches the insulating member.
  • the susceptor 23 may have a wall thickness of about 0.025mm to imm, or about 0.05 mm.
  • the susceptor 23 may have a length of about 40mm to 60mm, about 40mm to 45 mm, or about 44.5 mm.
  • the insulating member may have a wall thickness of about 0.25 mm to 2 mm, 0.25 mm to imm, or about 0.5 mm.
  • Figure 7 shows a consumable 11 comprising an aerosol generating material 25.
  • the consumable 11 comprises a distal end, opposite the mouth end 12. The distal end is therefore most proximate a base 20 of the receiving space 3 when received therein.
  • Embodiments of the invention are configured to remove deposits from the receiving space 3 that have built up over time, following repeated heating of consumables 11.
  • FIG 3 shows an article 40 according to embodiments of the invention.
  • the article 40 is configured to assist with cleaning of an aerosol provision device, such as the aerosol provision device 1 of Figs. 1 and 2. Use of the article 40 will be described with reference to the features of the aerosol provision device of Figs. 1 and 2.
  • the article 40 comprises an inner core 41 wrapped in a wrapper 42.
  • the wrapper 42 comprises an abrasive surface 43 that is configured to dislodge or remove condensate deposits which build up within the receiving space 3 of the aerosol provision device 1.
  • the article 40 is configured to be inserted into the receiving space 3 of the aerosol provision device 1 in order to dislodge or remove condensate deposits and improve the performance of the aerosol provision device 1.
  • the inner core 41 of the article 40 is made from cellulose acetate. This allows the article 40 to be easily manufactured using conventional tobacco industry product manufacturing machinery. However, it is to be appreciated that the inner core could be formed of any suitable material such as plastics or composites.
  • the abrasive surface 43 of the article 40 may be formed by abrasive particles embedded in the wrapper 42. Alternatively, the abrasive surface 43 may be formed by abrasive particles adhered to the wrapper 42 using adhesive. The abrasive surface 43 may extend along a portion of the article 40 or along the entire length of the article 40. The abrasive particles could be in the form of small rock or sand particles. Alternatively, the abrasive particles may be fibres. It is to be appreciated that the abrasive particles can be formed from any substance that will create an abrasive surface capable of dislodging condensate deposits from the wall 2 of the receiving space 3.
  • Figures 4A to 4E show abrasive surfaces according to embodiments of the invention.
  • Figure 4A illustrates a side view of the abrasive surface 43 of an article 40.
  • the abrasive surface 43 comprises a protrusion 44.
  • the protrusion 44 is configured to dislodge or remove condensate deposits from the wall 2 of the receiving space 3.
  • the protrusion 44 extends in a direction perpendicular to a longitudinal axis of the article 40 and is configured to contact the wall 2 of the receiving space 3 in order to dislodge or remove condensate deposits via abrasion.
  • the article 40 may comprise multiple protrusions 44 along its length as shown in Figure 4B.
  • the protrusions 44 shown in Figures 4A and 4B have a semi-circular cross section, however it is to be appreciated that the protrusions 44 can be any shape or size in order to be in contact with the wall 2 of the receiving space 3.
  • the protrusions 44 of the abrasive surface 43 may be in the form of corrugations 45 embossed into the wrapper 42 as shown in Figures 4C and 4D.
  • the corrugations 45 are formed on the surface of the wrapper 42 and are parallel to a longitudinal axis of the article 40.
  • the corrugations 45 are arranged around the circumference of the article 40. It is to be appreciated that the corrugations 45 may extend helically around the article 40 and not linearly as shown.
  • Figure 4E shows a side view of an alternative article according to the invention.
  • the abrasive surface 43 of the article 40 comprises bristles 46.
  • the bristles 46 extend away from the article 40 in a direction perpendicular to a longitudinal axis of the article 40.
  • the bristles 46 are configured to dislodge or remove condensate deposits within the receiving space 3 of the aerosol provision device 1 via abrasion with the wall 2.
  • the abrasive surface 43 of the article 40 may comprise any number features or combination of features.
  • the features can be any shape or arrangement that would ensure that the abrasive surface is capable of dislodging or removing condensate deposits from the wall 2 of the receiving space 3 via abrasion with the wall 2.
  • the features of the abrasive surface are not limited to the examples as described above.
  • the article described above is provided to the user within a pack which also contains consumables that generate an aerosol when heated by the aerosol provision device.
  • a method of making the article comprises: creating an inner core and wrapping the inner core in a wrapper that comprises an abrasive outer surface.
  • the inner core can be created using conventional tobacco industry product manufacturing machinery, thereby ensuring that new machinery is not required.
  • the inner core may be made using the same techniques used to make consumable filters, such as cigarette filters.
  • the abrasive surface is formed on the wrapper prior to the wrapper being wrapped around the inner core.
  • the wrapper may comprise protrusions or corrugations formed by embossing the wrapper. Abrasive particles may also applied to the wrapper.
  • the abrasive particles maybe added to the pulp mixture that forms the wrapper, where the wrapper is a paper material, or alternatively adhered to the wrapper using adhesive once the wrapper has been formed.
  • the abrasive particles may also be applied to the wrapper via flocking.
  • the article 40 may be a consumable 40 comprising aerosol generating material 25.
  • a consumable 40 according to embodiments of the invention is illustrated by Figure 5. Features in common with the consumable 11 of Fig. 7 retain the same reference numbers.
  • the wrapper 42 may be a tipping material or cigarette paper 28 that is configured to attach the aerosol generating material 25 to the filter 27.
  • the abrasive surface 43 of the consumable 40 may take the same form as described above - with reference to any of Figs. 4A to 4E - irrespective of whether the wrapper 42 comprises a cigarette paper, tipping paper or any other wrapper material suitable for wrapping a consumable.
  • FIG. 6 shows another consumable 60 according to an embodiment of the invention.
  • the consumable 60 comprises an outer sheath 50 which houses the consumable 60.
  • the outer sheath 50 comprises a flange 51 that protrudes in a direction perpendicular to a longitudinal axis of the consumable 60.
  • the flange 51 is configured to be in contact with the wall 2 of the receiving space 3 of the aerosol provision device 1.
  • the flange 51 dislodges or removes condensate deposits via abrasion with the wall 2 of the receiving space 3.
  • the outer sheath 50 may be formed from a plastic material however, the outer sheath 50 could also be formed from any suitable material.
  • the flange 51 may be located at any point along the length of the outer sheath 50 or be any shape which would allow the flange 51 to dislodge or remove the condensate deposits.
  • the location and shape of the flange 51 is not to be limited to the arrangement illustrated in Figure 6.
  • the aerosol generating material 25 comprises a tobacco material 26.
  • the tobacco material 26 may comprise conventionally cured tobacco that has been cut or shredded in the normal way. Such tobacco is similar to the tobacco found in cigarettes.
  • the tobacco material may 26 be reconstituted to make a tobacco paper which is then shredded or cut into strips.
  • the tobacco paper may be further impregnated with an aerosol former material such as glycerine, glycerol or propylene glycol. Therefore, heat from the aerosol vaporizes the aerosol former material as it passes through the rod of aerosol generating material 25 during inhalation by a user.
  • the aerosol former material will be flavoured by the tobacco paper to provide a tobacco flavour to the aerosol.
  • the tobacco paper comprises longitudinal strips of tobacco paper, each longitudinal strip being arranged substantially parallel to a longitudinal axis of the article. Therefore, the resistance to draw of the rod of aerosol generating material 25 is reduced.
  • the tobacco material 26 is reconstituted to make beads of tobacco.
  • the beads of tobacco may have a mean diameter of 0.5mm to 3mm. It shall be appreciated that for a given volume occupied by the beads of tobacco, the smaller the mean diameter, the larger the collective surface area presented by the beads of tobacco.
  • the flavour imparted to the aerosol is proportional to the surface area presented by the beads of tobacco.
  • the rod of aerosol generating material 25 comprises a first wrapping material 31.
  • the first wrapping material maybe electrically conducting, such as aluminium foil, metalized paper or a braided ferrous material. Therefore the first wrapping material may serve as an additional susceptor to the inductive heating assembly 22.
  • the first wrapping material circumscribes the rod of aerosol generating material 25 so that edges of the first wrapping material 31 overlap. Overlapping edges of the first wrapping material are adhered along a lap seam.
  • the rod of aerosol generating material 25 is attached to a filter section 27 by the tipping material 28.
  • the tipping material 28 circumscribes the rod of aerosol generating material 25 and the filter section 27 so that edges of the tipping material 28 overlap. Overlapping edges of the tipping material 28 are adhered along a lap seam.
  • the filter section 27 comprises a cylindrical body of filter material wrapped in a plug wrap 32.
  • the plug wrap 32 is disposed between the filter material and the tipping material 28.
  • the distal end 33 of the consumable 40, 60 further comprises a plug 29.
  • the plug 29 comprises a disc of material that extends across the end of the rod of aerosol generating material and is attached thereto by the tipping material 28.
  • the plug 29 further comprises a plug wrapper 30 disposed between the plug and the tipping material 28.
  • the plug 29 maybe impermeable to prevent condensate from leaking out of the distal end of the consumable 40, 60 during use.
  • the consumable 40, 60 has an outer circumference of about 21 mm (i.e. the consumable is in the semi-slim format).
  • the consumable 40, 60 has a rod of aerosol generating material 25 with a circumference greater than 19mm.
  • the consumable 40, 60 is heated, heat transfers through the rod of aerosol generating material 25 to volatise components of the rod of aerosol generating material 25, and circumferences greater than 19mm have been found to be particularly effective at producing an aerosol in this way. Since the consumable 40, 60 may be heated to release an aerosol, improved heating efficiency can be achieved using consumables 40, 60 having circumferences of less than about 23mm. To achieve improved aerosol via heating, while maintaining a suitable product length, circumferences of greater than 19mm and less than 23mm are preferable. In some examples, the circumference can be between 20mm and 22mm, which has been found to provide a good balance between providing effective aerosol delivery while allowing for efficient heating.
  • the outer circumference of the filter section 27 is substantially the same as the outer circumference of the rod of aerosol generating material 25 and the plug 29, such that there is a smooth transition between these components.
  • the outer circumference of the filter section 27 is about 20.8mm.
  • the tipping material 28 can have a basis weight which is higher than the basis weight of the other wrapping materials 30, 31, 32 used in the consumable 40, 60, for instance a basis weight of 40 gsm to 80 gsm, more preferably between 50 gsm and 70 gsm, and in the present example 58 gsm. These ranges of basis weights have been found to result in tipping materials having acceptable tensile strength while being flexible enough to wrap around the consumable 40, 60 and adhere to itself along overlapping longitudinal edges.
  • the tipping material 28 and/or the first wrapping material 31 and/or plug wrapper 30 comprises citrate, such as sodium citrate or potassium citrate.
  • the materials 28, 31, 30 may have a citrate content of 2% by weight or less, or 1% by weight or less. Reducing the citrate content is thought to assist with reducing the charring effect which may occur during use.
  • the respective wrapping materials 30, 31, 32 of the plug 29, rod of aerosol generating material 25 and filter section 27 have a basis weight of less than 50 gsm, more preferably between about 20 gsm and 40 gsm.
  • said wrapping materials 30, 31, 32 have a thickness of between 30 pm and 60 pm, more preferably between 35 pm and 45 pm.
  • said wrapping materials 30, 31, 32 are a non- porous, for instance having a permeability of less than too Coresta units, for instance less than 50 Coresta units.
  • said wrapping materials 30, 31, 32 can be porous, for instance having a permeability of greater than 200 Coresta Units.
  • the length of the filter section 27 is less than about 20 mm. In the present example, the length of the filter section 27 is 16 mm.
  • the filter section 27 comprises a body formed from filamentary tow. In the present example, the tow used in the body has a denier per filament (d.p.f.) of 8.4 and a total denier of 21,000. Alternatively, the tow can, for instance, have a denier per filament (d.p.f.) of 9.5 and a total denier of 12,000. In the present example, the tow comprises plasticised cellulose acetate tow.
  • the plasticiser used in the tow comprises about 7% by weight of the tow.
  • the plasticiser is triacetin.
  • different materials can be used to form the body.
  • the body of the filter section 27 can be formed from paper, for instance in a similar way to paper filters known for use in cigarettes.
  • the body can be formed from tows other than cellulose acetate, for instance polylactic acid (PLA), other materials described herein for filamentary tow or similar materials.
  • the tow is preferably formed from cellulose acetate.
  • the tow, whether formed from cellulose acetate or other materials preferably has a d.p.f. of at least 5, more preferably at least 6 and still more preferably at least 7.
  • the tow has a denier per filament of no more than 12 d.p.f., preferably no more than 11 d.p.f. and still more preferably no more than 10 d.p.f.
  • the total denier of the tow forming the body of the filter section 27 is preferably at most 30,000, more preferably at most 28,000 and still more preferably at most 25,000.
  • the tow preferably has a total denier of at least 8,000 and more preferably at least 10,000.
  • the denier per filament is between 5 and 12 while the total denier is between 10,000 and 25,000. More preferably, the denier per filament is between 6 and 10 while the total denier is between 11,000 and 22,000.
  • the cross-sectional shape of the filaments of tow are ⁇ ’ shaped, although in other embodiments other shapes such as ‘X’ shaped filaments can be used, with the same d.p.f. and total denier values as provided herein.
  • the cross section of the filaments of tow may have an isoperimetric ratio L2/A of 25 or less, 20 or less, or 15 or less, where L is the length of the perimeter of the cross section and A is the area of the cross section.
  • Such filaments of tow have a relatively low surface area for a given value of denier per filament, which improves delivery of aerosol to the consumer.
  • the body may comprise an adsorbent material (e.g. charcoal) dispersed within the tow.
  • the body of the filter section 27 may comprise a capsule.
  • the capsule can comprise a breakable capsule, for instance a capsule which has a solid, frangible shell surrounding a liquid payload.
  • a single capsule is used.
  • the capsule is entirely embedded within the body of the filter section 27. In other words, the capsule is completely surrounded by the material forming the body.
  • a plurality of breakable capsules maybe disposed within the body of the filter section 27, for instance 2, 3 or more breakable capsules.
  • the length of the body of the filter section 27 can be increased to accommodate the number of capsules required.
  • the individual capsules may be the same as each other, or may differ from one another in terms of size and/ or capsule payload.
  • each body of material may be provided, with each body containing one or more capsules.
  • the capsule has a core-shell structure.
  • the capsule comprises a shell encapsulating a liquid agent, for instance a flavourant or other agent, which can be any one of the flavourants or aerosol modifying agents described herein.
  • the shell of the capsule can be ruptured by a user to release the flavourant or other agent into the body of the filter section 27.
  • the filter section plug wrap 32 can comprise a barrier coating to make the plug wrap 32 substantially impermeable to the liquid payload of the capsule.
  • the plug wrap 32 can comprise a barrier coating to make the plug wrap 32 substantially impermeable to the liquid payload of the capsule.
  • the capsule is spherical and has a diameter of about 3 mm. In other examples, other shapes and sizes of capsule can be used.
  • the total weight of the capsule may be in the range about 10 mg to about 50 mg.
  • tow capability curve which represents the pressure drop through a length of rod formed using the tow, for each of a range of tow weights. Parameters such as the rod length and circumference, wrapper thickness and tow plasticiser level are specified, and these are combined with the tow specification to generate the tow capability curve, which gives an indication of the pressure drop which would be provided by different tow weights between the minimum and maximum weights achievable using standard filter rod forming machinery.
  • Such tow capability curves can be calculated, for instance, using software available from tow suppliers.
  • a body for a filter section 27 which includes filamentary tow having a weight per mm of length of the body which is between about 10% and about 30% of the range between the minimum and maximum weights of a tow capability curve generated for the filamentary tow.
  • This can provide an acceptable balance between providing enough tow weight to avoid shrinkage after the body has been formed, providing an acceptable pressure drop, while also assisting with capsule placement within the tow, for capsules of the sizes described herein.
  • the filter section 27 may further comprise a hollow tubular element that extends from the mouth end 12 and is attached to the filter section by the plug wrap 32.
  • the hollow tubular element may advantageously have a length of greater than about 10mm, for instance between about 10mm and about 30mm or between about 12mm and about 25mm. It has been found that a consumer’s lips are likely to extend in some cases to about 12mm from the mouth end 12 of the consumable 40, 60 when drawing aerosol through the consumable 40, 60, and therefore a hollow tubular element having a length of at least 10mm or at least 12mm means that most of the consumer’s lips surround this element.
  • a method of making the consumable 40, 60 comprises: forming a section of aerosol generating material 25; forming a section of filter material 27; combining the section of aerosol generating material 25 with the section of filter material 27, said section of filter material 27 forming the mouth end 12 of the consumable 40, 60; wrapping the combined aerosol generating material section and filter material section in a wrapper 28 comprising an abrasive outer surface.
  • the abrasive surface is formed on the wrapper 28 prior to the wrapper being wrapped around the aerosol generating material section 25 and filter material section 27.
  • the wrapper 28 may comprise protrusions or corrugations formed by embossing the wrapper.
  • Abrasive particles may also applied to the wrapper.
  • the abrasive particles may be added to the pulp mixture that forms the wrapper or alternatively adhered to the wrapper using adhesive once the wrapper has been formed.
  • the abrasive particles may also be applied to the wrapper via flocking.

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  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)

Abstract

L'invention concerne un article destiné à être inséré dans un dispositif de fourniture d'aérosol, le dispositif de fourniture d'aérosol comprenant un ensemble de chauffage ayant une paroi qui définit au moins partiellement une chambre destinée à recevoir un consommable à chauffer pendant l'utilisation du dispositif, le chauffage dudit consommable provoquant la formation de dépôts de condensat sur ladite paroi, l'article comprenant un noyau interne enveloppé dans une enveloppe qui comprend une surface abrasive conçue pour déloger lesdits dépôts de la paroi par abrasion avec ladite paroi.
PCT/GB2021/051792 2020-07-14 2021-07-13 Article destiné à être utilisé dans un système de fourniture d'aérosol WO2022013542A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB2010836.1 2020-07-14
GBGB2010836.1A GB202010836D0 (en) 2020-07-14 2020-07-14 Article for use in an aerosol provision system

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WO2022013542A1 true WO2022013542A1 (fr) 2022-01-20

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170055580A1 (en) * 2015-08-31 2017-03-02 British American Tobacco (Investments) Limited Apparatus for heating smokable material
WO2019115235A1 (fr) * 2017-12-13 2019-06-20 Philip Morris Products S.A. Récipient comprenant un outil de nettoyage amovible
WO2019175099A1 (fr) * 2018-03-13 2019-09-19 Philip Morris Products S.A. Outil de nettoyage pour appareil de chauffage
WO2019175102A1 (fr) * 2018-03-13 2019-09-19 Philip Morris Products S.A. Outil de nettoyage pour élément chauffant utilisant un effet d'aspiration

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170055580A1 (en) * 2015-08-31 2017-03-02 British American Tobacco (Investments) Limited Apparatus for heating smokable material
WO2019115235A1 (fr) * 2017-12-13 2019-06-20 Philip Morris Products S.A. Récipient comprenant un outil de nettoyage amovible
WO2019175099A1 (fr) * 2018-03-13 2019-09-19 Philip Morris Products S.A. Outil de nettoyage pour appareil de chauffage
WO2019175102A1 (fr) * 2018-03-13 2019-09-19 Philip Morris Products S.A. Outil de nettoyage pour élément chauffant utilisant un effet d'aspiration

Also Published As

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