US20250221445A1 - A substrate comprising an aerosol-generating material on a support and uses thereof - Google Patents

A substrate comprising an aerosol-generating material on a support and uses thereof Download PDF

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Publication number
US20250221445A1
US20250221445A1 US18/852,675 US202318852675A US2025221445A1 US 20250221445 A1 US20250221445 A1 US 20250221445A1 US 202318852675 A US202318852675 A US 202318852675A US 2025221445 A1 US2025221445 A1 US 2025221445A1
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Prior art keywords
aerosol
substrate
generating material
generating
support
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US18/852,675
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English (en)
Inventor
Klaus Mathie
Barry Dimmick
Walid Abi Aoun
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Nicoventures Trading Ltd
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Nicoventures Trading Ltd
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Publication of US20250221445A1 publication Critical patent/US20250221445A1/en
Assigned to Nicoventures Trading Limited reassignment Nicoventures Trading Limited ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BRITISH AMERICAN TOBACCO (INVESTMENTS) LIMITED, MATHIE, Klaus, DIMMICK, Barry, AOUN, WALID ABI
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    • 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
    • A24B15/14—Chemical features of tobacco products or tobacco substitutes of reconstituted tobacco made of tobacco and a binding agent not derived from 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
    • A24B15/18—Treatment of tobacco products or tobacco substitutes
    • A24B15/28—Treatment of tobacco products or tobacco substitutes by chemical substances
    • A24B15/281—Treatment of tobacco products or tobacco substitutes by chemical substances the action of the chemical substances being delayed
    • 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
    • A24B15/28—Treatment of tobacco products or tobacco substitutes by chemical substances
    • A24B15/30—Treatment of tobacco products or tobacco substitutes by chemical substances by organic substances
    • A24B15/302—Treatment of tobacco products or tobacco substitutes by chemical substances by organic substances by natural substances obtained from animals or plants
    • A24B15/303—Plant extracts other than tobacco
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES OF 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
    • 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

Definitions

  • the invention relates to substrates comprising an aerosol-generating material on a support, methods of manufacturing the substrates and uses thereof.
  • the precursor material comprises from about 1 to about 36 wt % aerosol-former material.
  • the plant material is selected from the group consisting of tobacco, eucalyptus , star anise, cocoa and hemp.
  • the extract from a flavour- or active-containing plant material is an aqueous extract.
  • the extract from a flavour- or active-containing plant material is an aqueous tobacco extract.
  • the aerosol-generating material comprises from about 40 to about 99% by weight tobacco solids.
  • the aerosol-generating material has a water content of no more than about 5% (calculated on a wet weight basis).
  • the substrate comprises a moisture impermeable coating surrounding the aerosol-generating material.
  • the substrate comprises a sorbent material.
  • the substrate is for use in an aerosol provision system.
  • an article comprising a substrate comprising a support at least partially coated with a dried extract from a flavour- and/or active-containing plant material.
  • the article comprises or consists of a substrate according to the first aspect.
  • a non-combustible aerosol-provision system comprising a substrate according to the first aspect, or an article according to the second aspect.
  • a method for providing a substrate comprising: contacting a support with a precursor material comprising an extract from a flavour- and/or active-containing plant material; and drying the precursor material to form a coating of an aerosol generating material on the support.
  • the precursor material is dried by freeze-drying, infrared heating, steam heating, microwave heating or air-drying.
  • the aerosol-generating material is provided on a support.
  • the combination of the aerosol-generating material and the support is referred to herein as a substrate.
  • the substrate may be used in an aerosol-provision system to generate an aerosol.
  • the support carries the aerosol-generating material and presents it in a manner suitable for use in an aerosol-provision system. This is a particularly beneficial way to provide the aerosol-generating material as this material is highly concentrated so that only very small amounts are required compared to the conventional aerosol-generating materials.
  • the support is an air-laid material, such as air-laid paper.
  • air-laid paper This has a highly porous surface structure and in some embodiments, the precursor material is applied to the surface of the air-laid paper. For example, this highly absorbent support may be soaked in the precursor material. In other embodiments, the precursor material may be added during the manufacture of the air-laid paper, the manufacturing process otherwise being a dry process.
  • the support is a porous material, such as an open-cell reticulated foam or sintered structure.
  • the porous material comprises a ceramic material, activated carbon material, zeolites, silica, wood, cork or other naturally occurring materials with a porous surface.
  • the precursor material may be absorbed by the porous material and then dried.
  • the support has a smooth or non-porous surface.
  • the in situ drying of the precursor of the aerosol-generating material means that, following drying, the dried aerosol-generating material is bonded to the surface.
  • the support consists of or comprises a heating material that comprises one or more materials selected from the group consisting of: an electrically-conductive material, a magnetic material, and a magnetic electrically-conductive material.
  • the heating material may comprise a metal or a metal alloy.
  • the heating material may comprise one or more materials selected from the group consisting of: aluminium, gold, iron, nickel, cobalt, conductive carbon, graphite, plain-carbon steel, stainless steel, ferritic stainless steel, copper, and bronze.
  • the heating material may be heated by induction heating.
  • Induction heating is a process in which an electrically-conductive object is heated by penetrating the object with a varying magnetic field.
  • the heating material may be heated by resistive heating.
  • the heating material is connected to a power supply.
  • the heating may be microwave heating or infrared heating.
  • the heating material has a rough or porous surface, for example, it may be in the form of a mesh or a perforated sheet. In other embodiments, the heating material may have a smooth surface, for example, it may be in the form of a flat strip or ribbon, or a rod or cylinder.
  • the substrates according to the present disclosure comprise an aerosol-generating material comprising one or more active substances and/or flavours, and, optionally, one or more aerosol-former materials.
  • the aerosol-generating material is formed by drying a precursor material comprising an extract from a flavour- and/or active-containing plant material. This drying step is carried out with the precursor material in contact with a support, to provide a substrate comprising the dried aerosol-generating material on a support.
  • the drying process is selected to retain the desired components of the precursor material and, therefore, the aerosol-generating material may comprise one or more active substances and/or flavours.
  • the precursor material further comprises one or more aerosol-former material. Additionally or alternatively, one or more aerosol-former materials may be added to the dried precursor material to provide an aerosol-generating material with the desired aerosol-former material content.
  • the aerosol-generating material may comprise one or more active substances and/or flavours, and, optionally, one or more aerosol-former materials.
  • the precursor material and/or the dried aerosol-generating material may also optionally include one or more other functional materials.
  • the invention enjoys the advantage of an aerosol-generating material that is formulated to have an increased shelf life and so it may be easily transported and stored. Without wishing to be bound by any particular theory, it is hypothesised that the low water content of the dried aerosol-generating material reduces evaporation over time of other solvents, and reduces degradation of nicotine and/or other volatile compounds. A low water content also inhibits microbial growth.
  • compositions comprising the dried aerosol-generating materials described herein are stable at a range of temperatures and humidities and have an increased shelf-life, and are therefore easy to store and transport.
  • the compositions may be stored at temperatures in the range of 0-35° C.
  • the compositions may be stored at a relative humidity of up to about 50%, prior to use.
  • the aerosol-generating materials also have the advantage of having a high concentration of the desired components. This means that relatively small amounts of the aerosol-generating material are required and less energy is required to heat and release the desired components. Significantly, the aerosols generated from these materials also provide an authentic tobacco taste of reasonable strength.
  • a further advantage of the aerosol-generating materials is that they may be used as a solid aerosol-generating substrate in Hybrid systems or Tobacco Heating Products (THPs). This makes the invention versatile enough to be used in a range of products without the need for further processing.
  • THPs Tobacco Heating Products
  • the extract from a flavour- or active-substance containing plant material is an extract derived by contacting the plant material with a suitable solvent, such as an aqueous solvent or an alcohol such as ethanol.
  • a suitable solvent such as an aqueous solvent or an alcohol such as ethanol.
  • the liquid portion comprising the solvent and any dissolved plant components may then be separated or partially separated from the remaining solid plant material to provide the extract to be included in the precursor composition and dried.
  • the tobacco material may be fermented, cured, uncured, toasted, or otherwise pre-treated.
  • the tobacco material may be provided in the form of cut rag tobacco.
  • the cut rag tobacco can have a cut width of at least 15 cuts per inch (about 5.9 cuts per cm, equivalent to a cut width of about 1.7 mm) for example.
  • the cut rag tobacco can be formed from a mixture of forms of tobacco material, for instance a mixture of one or more of paper reconstituted tobacco, leaf tobacco, extruded tobacco and bandcast tobacco.
  • the precursor material which is dried to form the aerosol-generating material may comprise at least about 10 wt %, at least about 15 wt %, at least about 20 wt %, at least about 25 wt %, at least about 30 wt %, at least about 35 wt %, or at least about 40 wt % tobacco solids (calculated on a wet weight basis). Additionally or alternatively, the precursor material may comprise up to about 60 wt %, up to about 55 wt %, up to about 50 wt %, up to about 45 wt %, or up to about 40 wt % tobacco solids (calculated on a wet weight basis). In some embodiments, the precursor material comprises from about 20 wt % to about 40 wt % tobacco solids (calculated on a wet weight basis).
  • precursor material may comprise up to about 99 wt %, up to about 90 wt %, up to about 80 wt %, up to about 70 wt % or up to about 60 wt % extract from tobacco or other flavour- or active-substance containing plant material (calculated on a wet weight basis).
  • the precursor material comprises around 50 wt % tobacco extract (calculated on a wet weight basis).
  • the tobacco extract has a solids content of between about 40 and about 65 wt %, between about 45 and about 65 wt %, or between about 40 and about 60 wt % (calculated on a wet weight basis).
  • the water content of the tobacco extract is between about 35 wt % and about 65 wt %, or between about 35 and about 55 wt % (calculated on a wet weight basis).
  • the nicotine content of the tobacco extract is between about 1 wt % and about 5 wt % (calculated on a wet weight basis).
  • the dried aerosol-generating material may comprise at least about 45 wt %, at least about 50 wt %, at least about 60 wt %, at least about 70 wt %, at least about 80 wt %, at least about 90 wt %, or at least about 95 wt % tobacco solids (calculated on a dry weight basis). Additionally or alternatively, the aerosol-generating material may comprise up to about 99 wt %, up to about 98 wt %, up to about 95 wt %, up to about 90 wt % or up to about 80 wt %. In some embodiments, the dried aerosol-generating material may comprise about 60 to about 80 wt % tobacco solids (calculated on a dry weight basis).
  • the precursor material may be in the form of a slurry, a suspension, a gel, a liquid or a solid, but in some embodiments which may be preferred, it is in the form of a suspension or liquid. In some embodiments, particles of solid material may be removed from the extract and/or from the precursor material by filtration and/or centrifugation.
  • the water content of the precursor material may be at least about 20 wt %, at least about 30 wt %, at least about 40 wt %, at least about 50 wt %, at least about 60 wt %, at least about 70 wt %, at least about 80 wt %, or at least about 90 wt % on a wet weight basis.
  • the water content of the precursor material may be up to about 95 wt %, up to about 90 wt %, up to about 85 wt %, up to about 80 wt %, up to about 75 wt %, up to about 70 wt %, up to about 65 wt %, up to about 60 wt %, up to about 55 wt % or up to about 50 wt % on a wet weight basis.
  • the water content of the precursor material is between about 40 and about 50 wt % on a wet weight basis (50% and 60 v/v %). When the precursor material has a lower water content, the spray/freeze-drying process is quicker, as there is less water to remove.
  • the dried aerosol-generating material and/or the precursor material comprises one or more active substance. This may be derived from the extract or it may be added. In some embodiments, the extract from a flavour- or active-substance containing plant material comprises an active substance.
  • the active substance 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 and psychoactives.
  • the active substance may comprise, for example, nicotine, caffeine, taurine, theine, vitamins such as B6 or B12 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. In some embodiments, the active substance comprises caffeine, melatonin or vitamin B12.
  • the precursor material may comprise an extract from other botanical source(s) along with or instead of the tobacco extract.
  • the extract may comprise or be derived from one or more botanicals or constituents, derivatives or extracts thereof.
  • 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 extract may comprise or be derived from botanicals 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, marjor
  • the mint may be 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, Mentha longifolia, Mentha suaveolens variegata, Mentha pulegium, Mentha spicata c.v. and Mentha suaveolens
  • the extract comprises or is derived from one or more botanicals or constituents, derivatives or extracts thereof selected from eucalyptus , star anise, cocoa and hemp.
  • the extract comprises or is derived from one or more botanicals or constituents, derivatives or extracts thereof selected from rooibos and fennel.
  • the aerosol former comprises one or more polyhydric alcohols, such as propylene glycol, triethylene glycol, 1,3-butanediol and glycerin; esters of polyhydric alcohols, such as glycerol mono-, di- or triacetate; and/or aliphatic esters of mono-, di- or polycarboxylic acids, such as dimethyl dodecanedioate and dimethyl tetradecanedioate.
  • the aerosol-former material comprises one or more compounds selected from erythritol, propylene glycol, glycerol, vegetable glycerine (VG), triacetin, sorbitol and xylitol.
  • Suitable excipients include mannitol, sucrose, trehalose, lactose, sorbitol, raffinose, maltose, dextrans such as Dextran 10, Dextran 70, Dextran 90, maltodextrin, gelatin, agar, cyclodextrins, and polyethylene glycols such as PEG 2000-6000, and polyvinylpyrrolidone (PVP 10).
  • FIG. 2 illustrates an embodiment in which the support 1 comprises a flat support 2 .
  • a portion of one surface of the support 2 has been covered with a precursor material that has subsequently been dried to form a portion of dried aerosol-generating material 3 bound to the surface of the support 2 .
  • the drying methods used to dry the precursor material may be any suitable drying process, including freeze-drying.
  • the drying process used must be compatible with the precursor material and the desired make-up of the aerosol-generating material.
  • it may be desirable for the aerosol-generating material to include active and/or flavour substances derived from the extract in the precursor material it is important to select a drying method that will retain a sufficient amount of these components.
  • Freeze-drying also known as lyophilisation or cryodesiccation, is a process in which the precursor material is frozen, the temperature lowered and the water is removed via sublimation under reduced pressure conditions. Without wishing to be bound by any specific theory, it is believed that the low processing temperatures and rapid water loss via sublimation avoid changes in the aerosol-generating material's structure, appearance and characteristics. This process preserves the structure of the precursor material, and reduces the loss and decomposition of volatile flavour compounds.
  • the precursor material is frozen, for example, snap-frozen using liquid nitrogen or the like.
  • This frozen form which may have a desired size or shape, may then be dried, for example by freeze-drying.
  • the dried aerosol-generating material has a lower water content than the precursor material.
  • the water content of the aerosol-generating material may be at most about 0.5 wt %, about 1 wt %, about 2%, about 5 wt %, about 10 wt %, or about 20 wt % (calculated on a wet weight basis).
  • the water content of the dried aerosol-generating material may be reduced from the precursor material by at least about 50 wt %, about 60 wt %, about 70 wt %, about 80 wt %, about 90 wt %, about 95 wt %, about 98 wt %, or by about 100 wt %.
  • the dried aerosol-generating material has a water content of less than about 5 wt %, less than about 4 wt %, less than about 3 wt %, less than about 2 wt % or less than about 1 wt % (calculated on a wet weight basis), as measured by gas chromatography-thermal conductivity detector (GC-TCD) or Karl Fischer measurement.
  • GC-TCD gas chromatography-thermal conductivity detector
  • the precursor material comprises Burley tobacco extract and a water content of 60 wt %.
  • the dried aerosol generating material has a water content of 3 wt %.
  • a lower water content of the dried aerosol-generating material is associated with longer shelf-life and stability. However, very low water content may be associated be a brittle structure and a smaller particle size, as well as taking longer to process.
  • the material is also very hygroscopic. If the water content of the dried aerosol-generating material is too high on the other hand, the desired increased stability may not be achieved.
  • the dried aerosol-generating material may also not be as easy to handle with higher water content, with the material becoming sticky.
  • the aerosol-generating material when described as hygroscopic, this means that it will rapidly absorb water from the surrounding environment to significantly increase its water content.
  • the moisture content upon exposure of the uncoated aerosol-generating material to the environment (for example, upon storage in an open container or the like), the moisture content rapidly increases to above 20% or above 25% (calculated on a wet weight basis), as measured by gas chromatography-thermal conductivity detector (GC-TCD) or Karl Fischer titration.
  • GC-TCD gas chromatography-thermal conductivity detector
  • Karl Fischer titration Karl Fischer titration.
  • the coatings of different portions of the aerosol-generating material may decompose at different temperatures or at different rates to control the release of volatile components generated by heating the substrate.
  • the delivery system is a combustible aerosol provision system, such as a system selected from the group consisting of a cigarette, a cigarillo and a cigar.
  • the non-combustible aerosol provision system is an electronic cigarette, also known as a vaping device or electronic nicotine delivery system (END), although it is noted that the presence of nicotine in the aerosol-generating material is not a requirement.
  • END electronic nicotine delivery system
  • the non-combustible aerosol provision system 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 a substrate comprising an aerosol-generating material and a support and configured to be used with non-combustible aerosol provision devices.
  • consumables are sometimes referred to as articles throughout the disclosure.
  • the non-combustible aerosol provision system 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 a substrate comprising an aerosol-generating material and a support 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 a substrate comprising an aerosol-generating material and a support, 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.
  • FIG. 3 is a side-on cross sectional view of a consumable or article 10 for use in an aerosol delivery system.
  • the article 10 comprises a mouthpiece segment 11 , and an aerosol generating segment 12 .
  • the aerosol generating segment 12 is in the form of a cylindrical rod and comprises a substrate 14 comprising an aerosol-generating material on a support.
  • the substrate 14 can be any of the substrates comprising an aerosol-generating material and a support discussed herein, such as the embodiment illustrated in FIG. 1 .
  • the aerosol-generating segment 12 can be provided in other forms.
  • the mouthpiece segment 11 in the illustrated embodiment includes a body of material 15 such as a plug of fibrous or filamentary tow. Between the aerosol generating segment 12 and the mouthpiece segment 11 , there is positioned a cooling section 13 comprising a hollow tube 16 formed from a suitable material such as cellulose acetate, paper or a heat absorbing material.
  • the consumable 10 further comprises a wrapper 17 , such as a paper wrapper, circumscribing the mouthpiece segment 11 , the cooling section 13 and the aerosol generating segment 12 .
  • a wrapper 17 such as a paper wrapper, circumscribing the mouthpiece segment 11 , the cooling section 13 and the aerosol generating segment 12 .
  • FIG. 4 shows an example of a non-combustible aerosol provision device 100 for generating aerosol from an aerosol-generating medium/material such as the composition of a consumable 110 , as described herein.
  • the device 100 may be used to heat a replaceable article 110 comprising the aerosol-generating medium, for instance an article 10 as illustrated in FIG. 3 or as described elsewhere herein, to generate an aerosol or other inhalable medium which is inhaled by a user of the device 100 .
  • the device 100 and replaceable article 110 together form a system.
  • the device 100 comprises a housing 102 (in the form of an outer cover) which surrounds and houses various components of the device 100 .
  • the device 100 has an opening 104 in one end, through which the article 110 may be inserted for heating by a heating assembly. In use, the article 110 may be fully or partially inserted into the heating assembly where it may be heated by one or more components of the heater assembly.
  • the device 100 of this example comprises a first end member 106 which comprises a lid 108 which is moveable relative to the first end member 106 to close the opening 104 when no article 110 is in place.
  • the lid 108 is shown in an open configuration, however the lid 108 may move into a closed configuration.
  • a user may cause the lid 108 to slide in the direction of arrow “B”.
  • the device 100 may also include a user-operable control element 112 , such as a button or switch, which operates the device 100 when pressed. For example, a user may turn on the device 100 by operating the switch 112 .
  • a user-operable control element 112 such as a button or switch
  • the device 100 may also comprise an electrical component, such as a socket/port 114 , which can receive a cable to charge a battery of the device 100 .
  • the socket 114 may be a charging port, such as a USB charging port.
  • the substance to be delivered may be the aerosol-generating material of a substrate as described herein, and optionally another aerosol-generating material that may or may not be heated.
  • the substrate and other aerosol-generating material may comprise one or more active constituents, one or more flavours, one or more aerosol-former materials, and/or one or more other functional materials.
  • the invention enjoys the advantage of longer shelf life than other tobacco extracts.
  • the nicotine content of the precursor and aerosol-generating material after the freeze drying process has been calculated, providing an indication of the amount of nicotine retained following the processing.
  • the nicotine recovery of the dried aerosol generating material is at least about 76 wt % on a dry weight basis.
  • the nicotine recovery of the dried aerosol generating material compared to the original tobacco extract may be at least about 60%, at least about 70%, at least about 75%, at least about 80%, or at least about 90% on a dry weight basis.
  • the glycerol content of the precursor and dried aerosol-generating material after the freeze drying process has been calculated, providing an indication of the amount of glycerol retained following the processing.
  • the glycerol recovery of the dried aerosol generating material is at least about 85%.
  • the glycerol recovery of the dried aerosol generating material compared to the precursor material may be at least about 70%, at least about 75%, at least about 80%, at least about 85%, at least about 90% at least about 95% on a dry weight basis.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Agronomy & Crop Science (AREA)
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US18/852,675 2022-04-01 2023-03-31 A substrate comprising an aerosol-generating material on a support and uses thereof Pending US20250221445A1 (en)

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GBGB2204838.3A GB202204838D0 (en) 2022-04-01 2022-04-01 A substrate comprising an aerosol-generating material on a support and uses thereof
GB2204838.3 2022-04-01
PCT/GB2023/050862 WO2023187410A1 (en) 2022-04-01 2023-03-31 A substrate comprising an aerosol-generating material on a support and uses thereof

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