EP4687516A1 - Aerosol generating article - Google Patents

Aerosol generating article

Info

Publication number
EP4687516A1
EP4687516A1 EP24719606.6A EP24719606A EP4687516A1 EP 4687516 A1 EP4687516 A1 EP 4687516A1 EP 24719606 A EP24719606 A EP 24719606A EP 4687516 A1 EP4687516 A1 EP 4687516A1
Authority
EP
European Patent Office
Prior art keywords
aerosol
article
generating
upstream
rod
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP24719606.6A
Other languages
German (de)
French (fr)
Inventor
Richard Hepworth
Barry DIMMICK
Steven Holford
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nicoventures Trading Ltd
Original Assignee
Nicoventures Trading Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from GBGB2304660.0A external-priority patent/GB202304660D0/en
Application filed by Nicoventures Trading Ltd filed Critical Nicoventures Trading Ltd
Publication of EP4687516A1 publication Critical patent/EP4687516A1/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • A24B15/283—Treatment of tobacco products or tobacco substitutes by chemical substances the action of the chemical substances being delayed by encapsulation of the chemical substances
    • 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
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B3/00—Preparing tobacco in the factory
    • A24B3/18—Other treatment of leaves, e.g. puffing, crimpling, cleaning
    • 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
    • A24D1/22—Cigarettes with integrated combustible heat sources, e.g. with carbonaceous heat sources

Definitions

  • the present invention relates to a component and an article for use in an aerosol provision system and an aerosol provision system.
  • the sheet material can be crimped.
  • the sheet material can comprise a plurality of portions or strips of sheet material.
  • the sheet material can comprise paper and/or a metal foil.
  • the upstream portion can be circumscribed by a wrapping material comprising a metal foil.
  • the section can be circumscribed by the wrapper along its full length.
  • the wrapper can comprise a metal foil, optionally aluminium foil.
  • the gathered sheet or sheets of fibrous material can define a plurality of passages through the section.
  • the component can have a length of 3 mm to 8 mm.
  • an article for use in a non-combustible aerosol provision system comprising an upstream end, a downstream end, a rod of aerosol-generating material, and a component according to the fifth aspect above upstream of the rod of aerosolgenerating material.
  • the component can be at the upstream end of the article.
  • Figure 1 is a side-on cross-sectional view of an article for use in an aerosol provision system, comprising an aerosol-generating portion and a component positioned at an upstream end of the article;
  • Figure 2 is a side-on cross-sectional view of a further article for use in an aerosol provision system, having an alternative configuration of wrappers;
  • Figure 3A is a cross-sectional view of the component of Figure 1, along the X-X’ line of Figure 1;
  • Figure 3B is a side-on view of the sheet material forming the component of Figure 1;
  • Figure 4 is a side-on cross-sectional view of a further article for use in an aerosol provision system comprising a further component downstream of the aerosolgenerating portion;
  • Figure 5 is a side-on cross-sectional view of a further article for use in an aerosolprovision system, comprising a tubular element positioned at an upstream end of the article; and
  • Figure 6 is a side-on cross-sectional view of a further article for use in an aerosolprovision system, comprising a component and a tubular element positioned upstream of the aerosol-generating portion.
  • Figure 1 is a side-on cross sectional view of an article 1 for use in an aerosol provision system.
  • the article comprises a consumable for a non-combustible aerosol provision system.
  • the article 1 further comprises an upstream component 4 at an upstream end of the article 1.
  • the upstream component 4 includes a body of material 5 wrapped in a first wrapping material 6.
  • the stability of the article 1, in use may be improved by the provision of the upstream component 4 at the upstream end of the article, by preventing fall-out of aerosol-generating material from the upstream end of the article.
  • the upstream component 4 is connected to the rod of aerosol-generating material 2 by a connecting wrapper 7.
  • the connecting wrapper 7 is a paper wrapper.
  • the connecting wrapper 7 may be a paper backed foil wrapper, or a metal foil.
  • at least one of the first wrapping material 6 and the connecting wrapper 7 comprises a non-combustible material, suitably a noncombustible layer or coating such as a metal foil.
  • the connecting wrapper 7 is adhered to both the component 4 and the rod of aerosolgenerating material 2. At least part of the inner surface of the connecting wrapper 7 is covered by a layer of adhesive. It has been surprisingly found that applying a reduced amount of adhesive to the connecting wrapper 7 can result in the formation of an improved aerosol. This may be achieved by reducing the thickness of the layer of adhesive, or preferably by providing gaps in the layer of adhesive. Preferably, the layer of adhesive is discontinuous. For example, prior to combining the component 4 and the tobacco rod 2, adhesive may be applied to the connecting wrapper 7 in bands, such that the remaining portions of the connecting wrapper 7 are entirely free of adhesive.
  • portions of the component 4 and the rod of aerosol-generating material 2 may be free of adhesive.
  • the bands of adhesive may extend in the same direction as the longitudinal axis of the article, perpendicular to the longitudinal axis of the article, or at another angle, such as diagonal to the longitudinal axis.
  • Providing a discontinuous layer of adhesive on the inner surface of the connecting wrapper 7 may advantageously improve the ease of manufacture of the article 1, since less of the connecting wrapper 7 is wetted by the adhesive which can result in a higher tensile strength of the connecting wrapper 7 during manufacture.
  • the adhesive layer may be applied in a different pattern, for instance a dot matrix.
  • the connecting wrapper 7 has a permeability of at least 3 Coresta Units. In some examples, the connecting wrapper 7 has a permeability of at least 5
  • the combined permeability of the rod wrapper 10 and the connecting wrapper 7 together with any intermediate layer of adhesive may be determined by breaking down the article 1 to separate the wrapping materials from the rod of aerosol-generating material, and measuring the total permeability through the wrapping materials surrounding the rod of aerosol-generating material, i.e., the rod wrapper 10, the connecting wrapper 7, and any intermediate layer of adhesive, in accordance with ISO 2965:2019.
  • connecting wrapper 7 has a basis weight between about 27 gsm and about 70 gsm, for instance between about 36 gsm and about 50 gsm, or about 36 gsm, about 41 gsm, about 44 gsm or about 48 gsm.
  • the upstream component 4 is adjacent to an upstream end of the rod of aerosol-generating material 2.
  • more than one component may be provided upstream of the rod of aerosol-generating material.
  • a first upstream component 4 may be provided at the upstream end of the article, and a second component may be provided in between the first upstream component 4 and the rod of aerosol-generating material 2.
  • the article 1 has an outer circumference of about 21 mm (i.e. the article is in the demi-slim format).
  • the article 1 has a rod of aerosolgenerating material having a circumference greater than 19 mm. This has been found to provide a sufficient circumference to generate an improved and sustained aerosol over a usual aerosol generation session preferred by consumers.
  • rod circumferences of greater than 19 mm and less than 23 mm are preferable.
  • the rod circumference can be between 20 mm and 22 mm, which has been found to provide a good balance between providing effective aerosol deliveiy while allowing for efficient heating.
  • the outer circumference of the mouthpiece 2 is substantially the same as the outer circumference of the rod of aerosol-generating material 3, such that there is a smooth transition between these components.
  • the outer circumference of the mouthpiece 2 is about 20.8 mm.
  • the mouthpiece includes a cooling section 13, positioned downstream of the rod of aerosol-generating material 2.
  • the cooling section 13 is in an abutting relationship with the rod of aerosol-generating material 2.
  • additional components may be provided between the rod of aerosol-generating material 2 and the cooling section 13.
  • the mouthpiece 3 also includes, in the present example, a mouthpiece body 14 downstream of the cooling section 13, and a hollow tubular element 15 downstream of the mouthpiece body 14, at the mouth end of the article 1.
  • the hollow tubular element 15 may be omitted, and the mouthpiece body 14 may form the mouth end of the article.
  • the length of the mouthpiece body 14 may be increased, or a further body of material may be provided at the mouth end.
  • the cooling section 13 defines an air gap within the mouthpiece.
  • the air gap provides a chamber through which heated volatilised components generated by the rod of aerosol-generating material 2 flow.
  • the cooling section 13 is hollow to provide a chamber for aerosol accumulation yet rigid enough to withstand axial compressive forces and bending moments that might arise during manufacture and whilst the article 1 is in use.
  • the cooling section 13 provides a physical displacement between the rod of aerosol-generating material 2 and downstream portions of the mouthpiece 3.
  • the internal volume of the cooling section 13 is greater than 130 mm3.
  • the mouthpiece 3 comprises a cavity having an internal volume greater than 170 mm3, and still more preferably greater than 200 mm3, allowing further improvement of the aerosol.
  • the internal cavity comprises a volume of between about 130 mm3 and about 700 mm3 and, preferably, between about 160 mm3 and about 700 mm3.
  • the internal cavity may have a volume between about 170 mm3 and about 300 mm3.
  • the cavity can be configured to provide a temperature differential of at least 40 degrees Celsius between a heated volatilised component entering a first, upstream end of the cavity and a heated volatilised component exiting a second, downstream end of the cavity.
  • the cavity is preferably configured to provide a temperature differential of at least 60 degrees Celsius, preferably at least 80 degrees Celsius and more preferably at least too degrees Celsius between a heated volatilised component entering a first, upstream end of the cavity and a heated volatilised component exiting a second, downstream end of the cavity.
  • This temperature differential across the length of the cavity can protect temperature sensitive elements of the mouthpiece downstream of the cavity from the high temperatures of the aerosol-generating material 2 when it is heated.
  • the length of the cooling section 13 is less than about 50 mm.
  • the length of the cooling section 13 is less than about 40 mm. Still more preferably, the length of the cooling section 13 is less than about 35 mm. In addition, or as an alternative, the length of the cooling section 13 is preferably at least about 10 mm. Preferably, the length of the cooling section 13 is at least about 15 mm.
  • the length of the cooling section 13 is from about 15 mm to about 35 mm, more preferably from about 20 mm to about 30 mm, even more preferably from about 23 to about 27 mm, most preferably about 25 mm. In the present example, the length of the cooling section 13 is 25 mm.
  • the cooling section 13 is formed from a plurality of layers of paper which are parallel wound, with butted seams, to form a hollow tube.
  • first and second paper layers are provided in a two-ply tube, although in other examples 3, 4 or more paper layers can be used forming 3, 4 or more ply tubes.
  • Other constructions can be used, such as spirally wound layers of paper, cardboard tubes, tubes formed using a papier-mache type process, moulded or extruded plastic tubes or similar.
  • the cooling section 13 preferably has a wall thickness of at least about 50 pm and up to about 1 mm, preferably between too pm and 500 pm and more preferably between too pm and 150 pm. In the present example, the cooling section 13 has a wall thickness of about 150 pm.
  • the "wall thickness" of the cooling section corresponds to the thickness of the wall of the hollow tube in a radial direction, not including any surrounding material in which the hollow tube may be embedded. The wall thickness of the cooling section 13 may be measured, for example, using a caliper.
  • the thickness of the wall of the cooling section 13 is at least 50 microns and, preferably, at least 75, 80, 85, 90, 95, too, or 105 microns. In some embodiments, the thickness of the wall of the cooling section is at least too or no microns.
  • the thickness of the wall of the cooling section 13 is less than 1000 microns and, preferably, less than 500 microns.
  • the cooling section 13, mouthpiece body 14 and hollow tubular element 15 are connected by a combining wrapping material 11.
  • the article 1 is provided with first and second parallel rows of perforations 12 through the tipping material 9, combining wrapping material 11 and cooling section 13, providing ventilation into the mouthpiece 3 at the cooling section 13.
  • the perforations 12 are formed as laser perforations, at positions about 18 mm and about 19 mm respectively from the downstream, mouth -end 3b of the mouthpiece 3.
  • the ventilation can be provided into the mouthpiece 3 at other locations.
  • the mouthpiece body 14 is a filter. However, it should be recognised that in other examples the mouthpiece body 14 may be provided without substantially filtering the inhalant of the article 1.
  • the mouthpiece body 14 is formed from fibrous material.
  • the mouthpiece body 14 is formed from a sheet material.
  • the sheet material is paper.
  • the sheet material may be folded to form the mouthpiece body 14.
  • the mouthpiece body 14 may be formed from a continuous web of sheet material.
  • the sheet material is gathered to form the body 14 in a similar manner to a ‘crepe filter’.
  • the hollow tubular element 15 is positioned at the mouth end of the article 1.
  • the hollow tubular element 15 is formed from a plurality of layers of paper which are parallel wound, with butted seams, to form a hollow tube, as described in relation to the cooling section 13.
  • the hollow tubular element 15 may be formed according to any of the means described for the cooling section 13 and may have any wall thickness as described in relation to the cooling section 13.
  • the length of the hollow tubular element 15 is less than about 20 mm. More preferably, the length of the hollow tubular element 15 is less than about 15 mm. Still more preferably, the length of the hollow tubular element 15 is less than about 10 mm. In addition, or as an alternative, the length of the hollow tubular element 15 is at least about 5 mm.
  • the length of the hollow tubular element 15 is at least about 6 mm.
  • the length of the hollow tubular element 15 is from about 5 mm to about 20 mm, more preferably from about 6 mm to about 10 mm, even more preferably from about 6 mm to about 8 mm, most preferably about 6 mm, 7 mm or about 8 mm.
  • the hollow tubular element 15 has a length of 6 mm.
  • a tipping paper 9 is wrapped around the full length of the mouthpiece 3 and over part of the rod of aerosol-generating material 2, and has an adhesive on its inner surface to connect the mouthpiece 3 and rod 2.
  • the tipping paper 9 extends 5 mm over the rod of aerosol-generating material 2 but it can alternatively extend between 3 mm and 15 mm over the rod 2, or between 4 mm and 6 mm, to provide a secure attachment between the mouthpiece 3 and rod 2.
  • the rod of aerosol-generating material 2 is wrapped in a rod wrapper 10.
  • the rod wrapper 10 can, for instance, be a paper or paper-backed foil wrapper.
  • the connecting wrapper 7 circumscribes substantially the entire length of the rod of aerosol-generating material 7, such that the rod of aerosolgenerating material is circumscribed by two wrappers along substantially its entire length.
  • Such a double wrapped rod of aerosol-generating material may have improved stiffness and/or rigidity.
  • this can allow a lower density rod of aerosolgenerating material to be provided, whilst maintaining the desired level of stiffness.
  • the rod wrapper 10 may comprise a flavourant, an aerosol- modifying additive, an aerosol former, or an aerosol-generating material.
  • Figure 2 is a side-on cross-sectional view of a further article 1’ for use in an aerosol provision system.
  • Article 1’ is substantially the same as article 1, except for the configuration of wrappers surrounding the component 4 and the rod of aerosol- generating material 2.
  • the connecting wrapper 7 is replaced by a connecting wrapper 7’, which circumscribes the component 4 and a portion of the rod of aerosol- generating material 2.
  • the connecting wrapper 7’ extends over only a portion of the rod of aerosol-generating material 2.
  • the connecting wrapper 7’ may extend over the rod of aerosol generating material by about 3 mm to about 10 mm, for instance by about 5 mm.
  • the connecting wrapper 7’ may be the same as the connecting wrapper 7, except for the length of the connecting wrapper 7’.
  • the connecting wrapper 7’ has a length such that the connecting wrapper 7’ does not extend over the entire length of the rod of aerosolgenerating material 2.
  • Figure 3A is a cross sectional view of the component 4 of Figures 1 and 2 through the line X-X’ thereof.
  • the component 4 is illustrated in isolation of the remaining parts of the article 1, and includes the body of material 5 and wrapping material 6.
  • the body of material 5 is formed from a crimped and gathered sheet of material 8.
  • the sheet 8 is gathered laterally to form the body 5, which has a generally cylindrical outer shape.
  • the sheet 8 has a permeability of between about 1,000 and about 50,000 Coresta Units, in some examples between about 5,000 and about 50,000 Coresta Units.
  • a permeability of between about 1,000 and about 50,000 Coresta Units, in some examples between about 5,000 and about 50,000 Coresta Units.
  • Such levels of permeability have been advantageously found to result in a component 4 in which the material forming the body 5 is more evenly distributed within the body 5, and less likely to form channels extending longitudinally through the body 5.
  • the increased permeability therefore results in a higher resistance to draw through the length of the body 5.
  • This means that a lower average density of sheet material 8 can be used in the body 5 to achieve a desired resistance to draw, thus saving on material.
  • Ventilation may be provided into the rod of aerosol-generating material 2 such that the overall level of ventilation of the article 1 is between 10% and 60%, or between 25% and 80%, for instance up to 70%, up to 65%, up to 60%, up to 55%, or up to 50%.
  • the resistance to draw of the body 5 (and other resistance to draw and pressure drop measurements referred to herein) is measured according to the ISO standard method (1806565:2015).
  • the resistance to draw refers to the ‘closed resistance to draw’, in which any ventilation zones into the article or body under measurement are closed.
  • the one or more sheets forming the body 5 can have a combined width, prior to any crimping, of between 100mm and 240mm, for instance between 140mm and 200mm. Such widths can provide a good balance between the pressure drop through the length of the body of material 5 and the firmness of the body of material 5.
  • the one or more sheets 8 forming the body 5 can be formed from a cellulosic material.
  • the one or more sheets can be paper sheets, sheets of tobacco material, sheets of non-tobacco botanical material or combinations thereof.
  • the one or more sheets 8 forming the body 5 can have a basis weight of between about 20 and about 80 gsm, or between about 30 and about 50 gsm, or between about 36 and about 45 gsm, or between about 55 and about 75 gsm.
  • the one or more sheets can have an uncrimped thickness of between about 50 pm and about 500 pm, between about 50 pm and about 350 pm, between about 60 pm and about 300 pm, or between about 60 pm and about 160 pm.
  • the sheet material 8 can comprise a metal foil, for instance aluminium foil, optionally a paper-backed aluminium foil.
  • the sheet material may comprise an aerosol-generating material, for example, a paper reconstituted tobacco material, or an aerosol-generating film.
  • the aerosolgenerating film may be laminated on a supporting material, such as paper.
  • the body of material 5 can have a weight of from about 5 mg to about 15 mg per mm of length of said body, or between about 8 mg and about 12 mg per mm of length of said body, or about 10 mg per mm of length of said body.
  • the one or more sheets 8 can be crimped to increase the amount of sheet material that can be included in the body 5.
  • At least one of the one of more sheets 8 extending through the body 5 can include a crimped sheet material formed having a crimp pattern including a series of substantially parallel ridges and grooves.
  • the sheet material 8 is crimped prior to being formed into the body 5.
  • the sheet material 8 may be passed through a pair of crimping rollers.
  • the first body 5 comprises crimped sheet material 8 formed having a crimp pattern comprising a series of substantially parallel ridges and grooves. The crimping may make it easier to gather the sheet material 8 to form the body 5.
  • the bulk density of the body 5 can be between about 0.1 mg/mm 11 and about 0.25 mg/mm 11 . In the present example, the bulk density of the body of material 5 is about 0.19 mg/mitf. In some embodiments, the body 5 has a bulk density of at least 0.1 mg/mm 1 , 0.12 mg/mm 11 or 0.15 mg/mm 11 .
  • the bulk density of a body of material can be measured by separating said body from an article and surrounding plug wraps and/or tipping paper, and removing any embedded objects, but including any additives added to the sheet material 8. For the purpose of calculating the bulk density of the body, the contribution of any axially extending hollow channels having a cross-sectional area greater than XXmm2 are excluded from the calculation.
  • aerosol-modifying agent or aerosol former may be added to the material forming the body of material.
  • a flavour carrier or glycerol may be applied to the sheet material 8 before forming the body of material 5.
  • the body of material 5 includes an aerosol-generating film comprising lactic acid, for instance as described in WO 2021/ 105449.
  • the body of material comprises an acid, for instance an acid selected from the group consisting of lactic acid, levulinic acid, benzoic acid, citric acid, 2 -methylbutyric acid, or 2- methylvaleric acid.
  • the acid is lactic acid.
  • the acid is levulinic acid.
  • the non-combustible aerosol provision system is an aerosolgenerating material heating system, also known as a heat-not-burn system.
  • An example of such a system is a tobacco heating system.
  • the active substance may comprise one or more constituents, derivatives or extracts of cannabis, such as one or more cannabinoids or terpenes.
  • 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, rosemaiy, saffron, lavender, lemon peel, mint, juniper, elderflower, vanilla, wintergreen, beefsteak plant, curcuma, turmeric, sandalwood, cilantro, bergamot, orange blossom, myrtle, cassis, valerian, pimento, mace, damien, maijoram, olive
  • 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, 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. In some embodiments, 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. In some embodiments, the substance to be delivered comprises a flavour.
  • the flavour may be imitation, synthetic or natural ingredients or blends thereof. They may be in any suitable form, for example, liquid such as an oil, solid such as a powder, or gas.
  • 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 alimited 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 semi-solid (such as a gel) which may or may not contain an active substance and/or flavourants.
  • the aerosol-generating material may comprise one or more active substances and/or flavours, one or more aerosol-former materials, and optionally one or more other functional material.
  • the aerosol-generating material may comprise a binder, such as a gelling agent, and an aerosol former.
  • a substance to be delivered and/or filler may also be present.
  • a solvent such as water, is also present and one or more other components of the aerosol-generating material may or may not be soluble in the solvent.
  • the aerosol-generating material is substantially free from botanical material.
  • the aerosol-generating material is substantially tobacco free.
  • the aerosol-generating material may comprise more than one film, and the thickness described herein may refer to the aggregate thickness of those films.
  • the aerosol-generating film may be continuous.
  • the film may comprise or be a continuous sheet of material.
  • the sheet may be in the form of a wrapper, it may be gathered to form a gathered sheet or it may be shredded to form a shredded sheet.
  • the shredded sheet may comprise one or more strands or strips of aerosol-generating material.
  • the aerosol-generating film may be formed by combining a binder, such as a gelling agent, with a solvent, such as water, an aerosol-former and one or more other components, such as one or more substances to be delivered, to form a slurry and then heating the slurry to volatilise at least some of the solvent to form the aerosolgenerating film.
  • a binder such as a gelling agent
  • a solvent such as water
  • an aerosol-former such as one or more other components, such as one or more substances to be delivered
  • the sluriy may be heated to remove at least about 60 wt%, 70 wt%, 80 wt%, 85 wt% or 90 wt% of the solvent.
  • the aerosol-generating material may comprise or be an “amorphous solid”.
  • the aerosol-generating materiel comprises an aerosol-generating film that is an amorphous solid.
  • the amorphous solid may be a “monolithic solid”.
  • the amorphous solid may be substantially non-fibrous.
  • 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 amorphous solid may, for example, comprise from about 50wt%, 6owt% or 70wt% of amorphous solid, to about 90wt%, 95wt% or ioowt% of amorphous solid.
  • the amorphous solid may be substantially free from botanical material.
  • the amorphous solid may be substantially tobacco free.
  • 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 glycerol, propylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, 1,3-butylene glycol, erythritol, meso-Eiythritol, ethyl vanillate, ethyl laurate, a diethyl suberate, triethyl citrate, triacetin, a diacetin mixture, benzyl benzoate, benzyl phenyl acetate, tributyrin, lauiyl acetate, lauric acid, myristic acid, and propylene carbonate.
  • the one or more other functional materials may comprise one or more of apH regulators, colouring agents, preservatives, binders, fillers, stabilizers, and/or antioxidants.
  • the material may be present on or in a support, to form a substrate.
  • the support may, for example, be or comprise paper, card, paperboard, cardboard, reconstituted material, a plastics material, a ceramic material, a composite material, glass, a metal, or a metal alloy.
  • 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.
  • An aerosol-modifying agent (also referred to herein as an aerosol-modifying additive) 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 may be in powder, thread or granule form.
  • the aerosol-modifying agent may be free from filtration material.

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  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
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  • General Chemical & Material Sciences (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

An article for use in a non-combustible aerosol provision system includes an aerosol-generating portion and a downstream portion downstream of the aerosol-generating portion. The aerosol-generating portion can include a first hollow tubular element, a rod of aerosol-generating material, and a second hollow tubular element, wherein the first and second hollow tubular elements are positioned adjacent to and abutting an upstream and a downstream end of the rod of aerosol-generating material, respectively. The aerosol-generating portion can include an aerosol-modifying additive, wherein the aerosol-modifying additive is provided only in or in greater concentration in a section forming a downstream end of the aerosol-generating portion, and wherein the aerosol-modifying additive is arranged to be released into aerosol generated by the aerosol- generating material when heated. The article can include an upstream portion upstream of the aerosol-generating portion, where the upstream portion extends between 5% and 13% along the length of the article. A non-combustible aerosol provision system is also provided including a non-combustible aerosol-provision device, where the device comprises a heating chamber in which an article may be inserted, and an article comprising an aerosol-generating portion, wherein the aerosol-generating portion comprises a rod of aerosol-generating material and a section immediately upstream of the rod of aerosol-generating material, the section being configured such that, in use, an upstream end of the rod of aerosol-generating material is offset from a terminal end of the heating chamber by at least 4 mm, optionally by at least 5 mm, or at least 6 mm. A component for use in an article for use in a non-combustible aerosol provision system is also provided which includes a section formed from a gathered sheet or sheets of fibrous material, wherein the pressure drop across the component is between about 1.1 mmH2O per mm of length of the component and about 4mmH2O per mm of length of the component, and wherein the gathered sheet or sheets of fibrous material are formed from a material which is non-combustible or are treated with a combustion-retarding additive or the section comprises a wrapper which is formed from a material which is non-combustible or treated with a combustion-retarding additive.

Description

A Component and an Article for use in an Aerosol Provision System
Technical Field
The present invention relates to a component and an article for use in an aerosol provision system and an aerosol provision system.
Background
Certain tobacco industry products produce an aerosol during use, which is inhaled by a user. For example, tobacco heating devices heat an aerosol-generating substrate such as tobacco to form an aerosol by heating, but not burning, the substrate. Such tobacco industry products commonly include mouthpieces through which the aerosol passes to reach the user’s mouth.
Summary In accordance with embodiments of the invention, in a first aspect there is provided an article for use in a non-combustible aerosol provision system, the article comprising an aerosol-generating portion and a downstream portion downstream of the aerosolgenerating portion, the aerosol-generating portion comprising a first hollow tubular element, a rod of aerosol -generating material, and a second hollow tubular element, wherein the first and second hollow tubular elements are positioned adjacent to and abutting an upstream and a downstream end of the rod of aerosol-generating material, respectively.
The aerosol-generating portion can comprise an aerosol-modifying additive. The aerosol-modifying additive can be provided only in or in greater concentration in a section forming a downstream end of the aerosol-generating portion or of the rod of aerosol-generating material. The aerosol-modifying additive can be arranged to be released into aerosol generated by the aerosol -generating material when heated. The second hollow tubular element can comprise the aerosol-modifying additive.
Optionally, a wall of the second hollow tubular element can comprise the aerosolmodifying additive.
The first hollow tubular element can have an internal diameter smaller than an internal diameter of the second hollow tubular element. The first and second hollow tubular elements can have substantially the same wall thickness and internal diameter. The first and second hollow tubular elements can have substantially the same axial length. The first and second hollow tubular elements can have a wall thickness of at least 0.2 mm, or at least 0.5 mm, or at least 1 mm, or at least 1.5 mm. The first hollow tubular element can have a wall thickness of at least 1 mm, or at least 1.2 mm, or at least 1.5 mm. The first and second hollow tubular elements can be formed from paper. In accordance with embodiments of the invention, in a second aspect there is provided an article for use in a non-combustible aerosol provision system, the article comprising an aerosol-generating portion comprising an aerosol-generating material and an aerosol-modifying additive, wherein the aerosol-modifying additive is provided only in or in greater concentration in a section forming a downstream end of the aerosol- generating portion, and wherein the aerosol-modifying additive is arranged to be released into aerosol generated by the aerosol -generating material when heated.
The aerosol-modifying additive of the first or second aspect can be provided in a body of material at the downstream end of the aerosol-generating portion.
The aerosol-modifying additive of the first or second aspect can be provided in an additive release vessel, optionally in a capsule, a plurality of microcapsules, on a thread, or in an aerosol-generating film. The article of the first or second aspect can comprise an upstream portion upstream of the aerosol-generating portion.
In accordance with embodiments of the invention, in a third aspect there is provided an article for use in a non-combustible aerosol provision system, the article comprising an aerosol-generating portion and an upstream portion upstream of the aerosolgenerating portion, wherein the aerosol-generating portion comprises a rod of aerosolgenerating material, and wherein the upstream portion is free of aerosol-generating material, and wherein the upstream portion extends between 5% and 13% along the length of the article. The upstream portion of the first, second or third aspect can comprise a body of material.
The resistance to draw through the length of the body of material of the upstream portion can be between about 1.1 mmH20 per mm of length of the body of material and about 4 mmH20 per mm of length of the body of material.
The resistance to draw through length of the body of material of the upstream portion can be less than to mmH20, or less than 8 mmH20, or less than 6 mmH20, or less than 5 mmH20.
The body of material of the upstream portion can comprise an axially extending hollow channel. The axially extending hollow channel can have a maximum inner radial dimension of at least 0.5 mm, or at least 0.75 mm, or at least 1 mm, or at least 1.5 mm, or at least 2 mm.
The average bulk density of the body can be between about 0.1 mg/mm 1 and 0.25 mg/mm 1.
The body of material can comprise sheet material, optionally gathered sheet material.
The sheet material can be crimped. The sheet material can comprise a plurality of portions or strips of sheet material. The sheet material can comprise paper and/or a metal foil. The upstream portion can be circumscribed by a wrapping material comprising a metal foil.
The aerosol-generating material of any of the above aspects can comprise tobacco, and/or a non-tobacco botanical, and optionally include an active substance. Ventilation can be provided into the article of any of the above aspects. The level of ventilation can be between 30% and 75%, or between 40% and 65%.
In accordance with embodiments of the invention, in a fourth aspect there is provided a non-combustible aerosol provision system comprising: a non-combustible aerosol-provision device, wherein the device comprises a heating chamber in which an article may be inserted; and an article comprising an aerosol-generating portion, wherein the aerosolgenerating portion comprises a rod of aerosol-generating material and a section immediately upstream of the rod of aerosol-generating material, the section being configured such that, in use, an upstream end of the rod of aerosol-generating material is offset from a terminal end of the heating chamber by at least 4 mm, optionally by at least 5 mm, or at least 6 mm.
The section can be a hollow tubular section, or the section can comprise a body of material formed from a gathered sheet of fibrous material.
In accordance with embodiments of the invention, in a fifth aspect there is provided a component for use in an article for use in a non-combustible aerosol provision system, comprising a section formed from a gathered sheet or sheets of fibrous material, wherein the pressure drop across the component is between about 1.1 mmH20 per mm of length of the component and about 4mmH20 per mm of length of the component, and wherein: the gathered sheet or sheets of fibrous material are formed from a material which is non-combustible or are treated with a combustion-retarding additive; or the section comprises a wrapper which is formed from a material which is non- combustible or treated with a combustion-retarding additive.
The section can be circumscribed by the wrapper along its full length. The wrapper can comprise a metal foil, optionally aluminium foil. The gathered sheet or sheets of fibrous material can define a plurality of passages through the section.
The component can have a length of 3 mm to 8 mm.
In accordance with embodiments of the invention, in a sixth aspect there is provided an article for use in a non-combustible aerosol provision system, the article comprising an upstream end, a downstream end, a rod of aerosol-generating material, and a component according to the fifth aspect above upstream of the rod of aerosolgenerating material. The component can be at the upstream end of the article.
Brief Description of the Drawings Embodiments of the invention will now be described, by way of example only, with reference to the accompanying drawings, in which: Figure 1 is a side-on cross-sectional view of an article for use in an aerosol provision system, comprising an aerosol-generating portion and a component positioned at an upstream end of the article;
Figure 2 is a side-on cross-sectional view of a further article for use in an aerosol provision system, having an alternative configuration of wrappers;
Figure 3A is a cross-sectional view of the component of Figure 1, along the X-X’ line of Figure 1;
Figure 3B is a side-on view of the sheet material forming the component of Figure 1;
Figure 4 is a side-on cross-sectional view of a further article for use in an aerosol provision system comprising a further component downstream of the aerosolgenerating portion;
Figure 5 is a side-on cross-sectional view of a further article for use in an aerosolprovision system, comprising a tubular element positioned at an upstream end of the article; and Figure 6 is a side-on cross-sectional view of a further article for use in an aerosolprovision system, comprising a component and a tubular element positioned upstream of the aerosol-generating portion.
Detailed Description In the figures described herein, like reference numerals are used to illustrate equivalent features, articles or components.
Figure 1 is a side-on cross sectional view of an article 1 for use in an aerosol provision system. In the present case, the article comprises a consumable for a non-combustible aerosol provision system.
The article 1 comprises an aerosol-generating portion, in the present case a cylindrical rod of aerosol-generating material 2, and a mouthpiece 3 downstream from and connected to the rod of aerosol-generating material 2. In the present case, the aerosol- generating material 2 is tobacco. In other examples, the aerosol-generating material 2 may be a non-tobacco botanical material comprising an active material or substance as defined herein. The article 1 may be used within a non-combustible aerosol provision device to form a non-combustible aerosol provision system. In other examples, the article 1 can include its own heat source, forming an aerosol provision system without requiring a separate aerosol provision device. In some examples, the aerosol-generating material 2 comprises an aerosol-former in an amount from 10% to 30% by weight.
The article 1 further comprises an upstream component 4 at an upstream end of the article 1. The upstream component 4 includes a body of material 5 wrapped in a first wrapping material 6.
In the present case, the first wrapping material 6 is a foil backed paper. In other examples, the first wrapping material 6 can be a metal foil, or a paper plug wrap. The construction of the upstream component 4 is described in more detail below, with reference to Figure 3A.
As set out in greater detail below, providing the upstream component 4 at an upstream end of the article 1 can provide several advantages. In some examples, the upstream component 4 comprises a body 5 having a very low resistance to draw through the length of the body 5. In such examples, the component 4 may be provided at the upstream end of the article 1 without significantly increasing the resistance to draw through the length of the article 1 overall. Advantageously, this can enable an article to be provided having a standard length, but in which the aerosol-generating portion is positioned away from an upstream end of the article. For instance, the aerosolgenerating portion may be displaced such that, in use, the aerosol-generating portion is positioned in an area of a heating device where the aerosol-generating material has been found to be heated more effectively. In other examples, the provision of the low resistance to draw component 4 at an upstream end of the article 1 can advantageously enable the provision of a relatively high density, or relatively high resistance to draw aerosol-generating portion, whilst maintaining a desired weight, density or resistance to draw of the overall article 1.
In some examples, the upstream component 4 has a length which is between 5% and 13% of the length of the article 1. In some examples, the upstream component 4 is free of aerosol-generating material.
In some examples, the stability of the article 1, in use, may be improved by the provision of the upstream component 4 at the upstream end of the article, by preventing fall-out of aerosol-generating material from the upstream end of the article. The upstream component 4 is connected to the rod of aerosol-generating material 2 by a connecting wrapper 7. In the present case, the connecting wrapper 7 is a paper wrapper. In other examples, the connecting wrapper 7 may be a paper backed foil wrapper, or a metal foil. Preferably, at least one of the first wrapping material 6 and the connecting wrapper 7 comprises a non-combustible material, suitably a noncombustible layer or coating such as a metal foil. In some examples, at least one of the first wrapping material 6 and the connecting wrapper 7 is non-combustible. For instance, the first wrapping material 6 or the connecting wrapper 7 may be aluminium foil, or a paper backed aluminium foil. Advantageously, providing an article where the upstream component 4 is circumscribed by a non-combustible material, such as a metal foil, may prevent a user of the article 1 from lighting the article tin the manner of a conventional cigarette, where the article is not intended for such use. In the present example, the connecting wrapper 7 circumscribes substantially the entire length of the upstream component 4 and the rod of aerosol-generating material 2.
Advantageously, connecting the upstream component 4 to the rod of aerosol-generating material 2 with a connecting wrapper 7 which extends over substantially the entire length of the rod of aerosol-generating material 2 can provide additional strength and rigidity to the rod of aerosol-generating material. This can be particularly advantageous where the aerosol-generating material is less densely packed, or provided in a form having an inherently lower level of structural stability, such as granular tobacco.
The connecting wrapper 7 is adhered to both the component 4 and the rod of aerosolgenerating material 2. At least part of the inner surface of the connecting wrapper 7 is covered by a layer of adhesive. It has been surprisingly found that applying a reduced amount of adhesive to the connecting wrapper 7 can result in the formation of an improved aerosol. This may be achieved by reducing the thickness of the layer of adhesive, or preferably by providing gaps in the layer of adhesive. Preferably, the layer of adhesive is discontinuous. For example, prior to combining the component 4 and the tobacco rod 2, adhesive may be applied to the connecting wrapper 7 in bands, such that the remaining portions of the connecting wrapper 7 are entirely free of adhesive. When the connecting wrapper 7 with bands of adhesive is wound around the component 4 and the rod of aerosol-generating material 2, portions of the component 4 and the rod of aerosol-generating material 2 may be free of adhesive. The bands of adhesive may extend in the same direction as the longitudinal axis of the article, perpendicular to the longitudinal axis of the article, or at another angle, such as diagonal to the longitudinal axis. Providing a discontinuous layer of adhesive on the inner surface of the connecting wrapper 7 may advantageously improve the ease of manufacture of the article 1, since less of the connecting wrapper 7 is wetted by the adhesive which can result in a higher tensile strength of the connecting wrapper 7 during manufacture.
Other means of vaiying or reducing the amount of adhesive applied to the connecting wrapper 7 may be employed. For instance, the adhesive layer may be applied in a different pattern, for instance a dot matrix.
Preferably, at least a portion of the area of the inner surface of the connecting wrapper 7 is free of adhesive. Suitably, at least 30%, at least 40%, or at least 50% of the area of the inner surface of the connecting wrapper 7 is free of adhesive. Suitably, the connecting wrapper 7 has a tensile strength of at least 2.5 kgf/ 15mm, for instance at least 3 kgf/ 15mm, or at least 3.5 kgf/ 15mm. The tensile strength of the connecting wrapper 7 may be determined in accordance with the test method T 494.
In some examples, the connecting wrapper 7 has a permeability of at least 3 Coresta Units. In some examples, the connecting wrapper 7 has a permeability of at least 5
Coresta Units, at least 10 Coresta Units, or at least 20 Coresta Units. In some examples, this permeability is an inherent property of the connecting wrapper 7. In other examples, the connecting wrapper 7 may be provided with perforations to increase the material permeability. In some examples, the combined permeability of the rod wrapper 10 and the connecting wrapper 7, together with any intermediate layer of adhesive, is at least 25 Coresta Units, or at least 30 Coresta Units, or at least 50 Coresta Units. The combined permeability of the rod wrapper 10 and the connecting wrapper 7 together with any intermediate layer of adhesive may be determined by breaking down the article 1 to separate the wrapping materials from the rod of aerosol-generating material, and measuring the total permeability through the wrapping materials surrounding the rod of aerosol-generating material, i.e., the rod wrapper 10, the connecting wrapper 7, and any intermediate layer of adhesive, in accordance with ISO 2965:2019. In some examples, connecting wrapper 7 has a basis weight between about 27 gsm and about 70 gsm, for instance between about 36 gsm and about 50 gsm, or about 36 gsm, about 41 gsm, about 44 gsm or about 48 gsm. Using a basis weight in these ranges provides a configuration having improved firmness and resilience of the article, for instance during and after use of the article with a heating device as described herein. In the present case, the upstream component 4 is adjacent to an upstream end of the rod of aerosol-generating material 2. In other examples, more than one component may be provided upstream of the rod of aerosol-generating material. For example, a first upstream component 4 may be provided at the upstream end of the article, and a second component may be provided in between the first upstream component 4 and the rod of aerosol-generating material 2.
In the present example, the article 1 has an outer circumference of about 21 mm (i.e. the article is in the demi-slim format). Preferably, the article 1 has a rod of aerosolgenerating material having a circumference greater than 19 mm. This has been found to provide a sufficient circumference to generate an improved and sustained aerosol over a usual aerosol generation session preferred by consumers. As the article is heated, heat transfers through the rod of aerosol-generating material 2 to volatise components of the aerosol-generating material, and circumferences greater than 19 mm have been found to be particularly effective at producing an aerosol in this way. Since the article is to be heated to release an aerosol, improved heating efficiency can be achieved using articles having circumferences of less than about 23 mm. To achieve improved aerosol via heating, while maintaining a suitable product length, rod circumferences of greater than 19 mm and less than 23 mm are preferable. In some examples, the rod circumference can be between 20 mm and 22 mm, which has been found to provide a good balance between providing effective aerosol deliveiy while allowing for efficient heating.
The outer circumference of the mouthpiece 2 is substantially the same as the outer circumference of the rod of aerosol-generating material 3, such that there is a smooth transition between these components. In the present example, the outer circumference of the mouthpiece 2 is about 20.8 mm.
In the present example, the mouthpiece includes a cooling section 13, positioned downstream of the rod of aerosol-generating material 2. In the present example, the cooling section 13 is in an abutting relationship with the rod of aerosol-generating material 2. In other examples, additional components may be provided between the rod of aerosol-generating material 2 and the cooling section 13.
The mouthpiece 3 also includes, in the present example, a mouthpiece body 14 downstream of the cooling section 13, and a hollow tubular element 15 downstream of the mouthpiece body 14, at the mouth end of the article 1. In other examples, the hollow tubular element 15 may be omitted, and the mouthpiece body 14 may form the mouth end of the article. In some examples where the hollow tubular element 15 is omitted, the length of the mouthpiece body 14 may be increased, or a further body of material may be provided at the mouth end.
In the present example, the cooling section 13 defines an air gap within the mouthpiece. The air gap provides a chamber through which heated volatilised components generated by the rod of aerosol-generating material 2 flow. The cooling section 13 is hollow to provide a chamber for aerosol accumulation yet rigid enough to withstand axial compressive forces and bending moments that might arise during manufacture and whilst the article 1 is in use. The cooling section 13 provides a physical displacement between the rod of aerosol-generating material 2 and downstream portions of the mouthpiece 3.
Preferably, the internal volume of the cooling section 13 is greater than 130 mm3.
Providing a cavity of at least this volume has been found to enable the formation of an improved aerosol. Such a cavity size provides sufficient space within the mouthpiece 2 to allow heated volatilised components to cool, therefore allowing the exposure of the aerosol-generating material 2 to higher temperatures than would otherwise be possible, since they may result in an aerosol which is too warm. More preferably, the mouthpiece 3 comprises a cavity having an internal volume greater than 170 mm3, and still more preferably greater than 200 mm3, allowing further improvement of the aerosol. In some examples, the internal cavity comprises a volume of between about 130 mm3 and about 700 mm3 and, preferably, between about 160 mm3 and about 700 mm3. For example, the internal cavity may have a volume between about 170 mm3 and about 300 mm3.
The cavity can be configured to provide a temperature differential of at least 40 degrees Celsius between a heated volatilised component entering a first, upstream end of the cavity and a heated volatilised component exiting a second, downstream end of the cavity. The cavity is preferably configured to provide a temperature differential of at least 60 degrees Celsius, preferably at least 80 degrees Celsius and more preferably at least too degrees Celsius between a heated volatilised component entering a first, upstream end of the cavity and a heated volatilised component exiting a second, downstream end of the cavity. This temperature differential across the length of the cavity can protect temperature sensitive elements of the mouthpiece downstream of the cavity from the high temperatures of the aerosol-generating material 2 when it is heated. Preferably, the length of the cooling section 13 is less than about 50 mm. More preferably, the length of the cooling section 13 is less than about 40 mm. Still more preferably, the length of the cooling section 13 is less than about 35 mm. In addition, or as an alternative, the length of the cooling section 13 is preferably at least about 10 mm. Preferably, the length of the cooling section 13 is at least about 15 mm.
In some preferred embodiments, the length of the cooling section 13 is from about 15 mm to about 35 mm, more preferably from about 20 mm to about 30 mm, even more preferably from about 23 to about 27 mm, most preferably about 25 mm. In the present example, the length of the cooling section 13 is 25 mm.
In the present example, the cooling section 13 is formed from a plurality of layers of paper which are parallel wound, with butted seams, to form a hollow tube. In the present example, first and second paper layers are provided in a two-ply tube, although in other examples 3, 4 or more paper layers can be used forming 3, 4 or more ply tubes. Other constructions can be used, such as spirally wound layers of paper, cardboard tubes, tubes formed using a papier-mache type process, moulded or extruded plastic tubes or similar.
In some embodiments, the cooling section 13 preferably has a wall thickness of at least about 50 pm and up to about 1 mm, preferably between too pm and 500 pm and more preferably between too pm and 150 pm. In the present example, the cooling section 13 has a wall thickness of about 150 pm. The "wall thickness" of the cooling section corresponds to the thickness of the wall of the hollow tube in a radial direction, not including any surrounding material in which the hollow tube may be embedded. The wall thickness of the cooling section 13 may be measured, for example, using a caliper. In some embodiments, the thickness of the wall of the cooling section 13 is at least 50 microns and, preferably, at least 75, 80, 85, 90, 95, too, or 105 microns. In some embodiments, the thickness of the wall of the cooling section is at least too or no microns.
In some embodiments, the thickness of the wall of the cooling section 13 is less than 1000 microns and, preferably, less than 500 microns.
The cooling section 13, mouthpiece body 14 and hollow tubular element 15 are connected by a combining wrapping material 11.
In the present example, the article 1 is provided with first and second parallel rows of perforations 12 through the tipping material 9, combining wrapping material 11 and cooling section 13, providing ventilation into the mouthpiece 3 at the cooling section 13. In the present case, the perforations 12 are formed as laser perforations, at positions about 18 mm and about 19 mm respectively from the downstream, mouth -end 3b of the mouthpiece 3. In other examples, the ventilation can be provided into the mouthpiece 3 at other locations. In the present embodiment, the mouthpiece body 14 is a filter. However, it should be recognised that in other examples the mouthpiece body 14 may be provided without substantially filtering the inhalant of the article 1.
The mouthpiece body 14 is formed from fibrous material. In the present example, the mouthpiece body 14 is formed from a sheet material. In the present example, the sheet material is paper. The sheet material may be folded to form the mouthpiece body 14. The mouthpiece body 14 may be formed from a continuous web of sheet material. In the present example, the sheet material is gathered to form the body 14 in a similar manner to a ‘crepe filter’.
The hollow tubular element 15 is positioned at the mouth end of the article 1. In the present example, the hollow tubular element 15 is formed from a plurality of layers of paper which are parallel wound, with butted seams, to form a hollow tube, as described in relation to the cooling section 13. The hollow tubular element 15 may be formed according to any of the means described for the cooling section 13 and may have any wall thickness as described in relation to the cooling section 13. Preferably, the length of the hollow tubular element 15 is less than about 20 mm. More preferably, the length of the hollow tubular element 15 is less than about 15 mm. Still more preferably, the length of the hollow tubular element 15 is less than about 10 mm. In addition, or as an alternative, the length of the hollow tubular element 15 is at least about 5 mm. Preferably, the length of the hollow tubular element 15 is at least about 6 mm. In some preferred embodiments, the length of the hollow tubular element 15 is from about 5 mm to about 20 mm, more preferably from about 6 mm to about 10 mm, even more preferably from about 6 mm to about 8 mm, most preferably about 6 mm, 7 mm or about 8 mm. In the present example the hollow tubular element 15 has a length of 6 mm.
In the present example, a tipping paper 9 is wrapped around the full length of the mouthpiece 3 and over part of the rod of aerosol-generating material 2, and has an adhesive on its inner surface to connect the mouthpiece 3 and rod 2. In the present example, the tipping paper 9 extends 5 mm over the rod of aerosol-generating material 2 but it can alternatively extend between 3 mm and 15 mm over the rod 2, or between 4 mm and 6 mm, to provide a secure attachment between the mouthpiece 3 and rod 2. In the present example, the rod of aerosol-generating material 2 is wrapped in a rod wrapper 10. The rod wrapper 10 can, for instance, be a paper or paper-backed foil wrapper. As described above, the connecting wrapper 7 circumscribes substantially the entire length of the rod of aerosol-generating material 7, such that the rod of aerosolgenerating material is circumscribed by two wrappers along substantially its entire length. Such a double wrapped rod of aerosol-generating material may have improved stiffness and/or rigidity. Advantageously, this can allow a lower density rod of aerosolgenerating material to be provided, whilst maintaining the desired level of stiffness.
In some examples, the rod wrapper 10 may comprise a flavourant, an aerosol- modifying additive, an aerosol former, or an aerosol-generating material.
Figure 2 is a side-on cross-sectional view of a further article 1’ for use in an aerosol provision system. Article 1’ is substantially the same as article 1, except for the configuration of wrappers surrounding the component 4 and the rod of aerosol- generating material 2. In article 1’, the connecting wrapper 7 is replaced by a connecting wrapper 7’, which circumscribes the component 4 and a portion of the rod of aerosol- generating material 2. The connecting wrapper 7’ extends over only a portion of the rod of aerosol-generating material 2. For example, the connecting wrapper 7’ may extend over the rod of aerosol generating material by about 3 mm to about 10 mm, for instance by about 5 mm. The connecting wrapper 7’ may be the same as the connecting wrapper 7, except for the length of the connecting wrapper 7’. The connecting wrapper 7’ has a length such that the connecting wrapper 7’ does not extend over the entire length of the rod of aerosolgenerating material 2. Figure 3A is a cross sectional view of the component 4 of Figures 1 and 2 through the line X-X’ thereof. The component 4 is illustrated in isolation of the remaining parts of the article 1, and includes the body of material 5 and wrapping material 6. As illustrated, the body of material 5 is formed from a crimped and gathered sheet of material 8. The sheet 8 is gathered laterally to form the body 5, which has a generally cylindrical outer shape.
In some examples, the sheet 8 has a permeability of between about 1,000 and about 50,000 Coresta Units, in some examples between about 5,000 and about 50,000 Coresta Units. Such levels of permeability have been advantageously found to result in a component 4 in which the material forming the body 5 is more evenly distributed within the body 5, and less likely to form channels extending longitudinally through the body 5. For a given weight of sheet material 8, the increased permeability therefore results in a higher resistance to draw through the length of the body 5. This means that a lower average density of sheet material 8 can be used in the body 5 to achieve a desired resistance to draw, thus saving on material.
In addition, a sheet material 8 having a higher permeability also has a more open structure, and therefore for degradable materials this can result in an improvement in the time for the component 4 to degrade. Where additives are to be applied in liquid form to the sheet material 8, the increased permeability can also result in a sheet material 8 which is more absorbent, meaning that a larger volume of additive can be applied for a given weight of material.
The permeability of the sheet of material 7 can be measured according to the international standard ISO 2965:2019, as known to those skilled in the art. Biodegradability can be measured according to the procedure set out under ISO 14855- 2:2018. Components as described herein can achieve a biodegradation of greater than 50% in
30 days when exposed to either fresh or marine water.
In other examples, the sheet material may be non-porous, having for example, a porosity of less than 100 Coresta Units, for instance less than 50 Coresta Units. In some examples, the sheet material 8 may comprise a metal foil. For instance, the sheet material 8 may be a metal foil, or a paper backed metal foil.
In the present example, the body 5 has a resistance to draw of between 0.5 mmH20 and 30 mmH20, for instance between 5 mmH20 and 25 mmH20, or between 10 mmH20 and 20 mmH20. Preferably, the body 5 has a resistance to draw of less than 10 mm H20. for instance less than 8 mmH20, or less than 6 mmH20, or less than 5 mm H20..In some examples, the resistance to draw through the length of the body 5 is between o.5mmH2O and 10 mmH20. This resistance to draw can be between 1% and 30% of the resistance to draw across the article, for instance less than 20%, less than 15% or less than 10% of the resistance to draw through the length of the article. Ventilation may be provided into the rod of aerosol-generating material 2 such that the overall level of ventilation of the article 1 is between 10% and 60%, or between 25% and 80%, for instance up to 70%, up to 65%, up to 60%, up to 55%, or up to 50%.
The resistance to draw of the body 5 (and other resistance to draw and pressure drop measurements referred to herein) is measured according to the ISO standard method (1806565:2015). The resistance to draw refers to the ‘closed resistance to draw’, in which any ventilation zones into the article or body under measurement are closed.
In some examples, the resistance to draw through the length of the body 5 is at least 5 mmH20, or at least 7 mmH20, or at least 8 mm H2O.
In some examples, the resistance to draw through the length of the body 5 is at least 1.1 mmH20 per mm length of the body, or at least 1.5 mm H2O per mm length of the body. The article 1 in the present example has a ventilation level of about 70% of the aerosol drawn through the article 1. In the present example the body 5 is formed by a single gathered sheet of material 8.
However, in alternative examples, the body 5 may be formed from a plurality of sheets of material 8, which are gathered together to form the body 5. Each of the plurality of sheets of material may have the same or different properties, for instance their dimensions, permeability, thickness, basis weight, and composition.
The one or more sheets forming the body 5 can have a combined width, prior to any crimping, of between 100mm and 240mm, for instance between 140mm and 200mm. Such widths can provide a good balance between the pressure drop through the length of the body of material 5 and the firmness of the body of material 5.
The one or more sheets 8 forming the body 5 can be formed from a cellulosic material.
For instance, the one or more sheets can be paper sheets, sheets of tobacco material, sheets of non-tobacco botanical material or combinations thereof. The one or more sheets 8 forming the body 5 can have a basis weight of between about 20 and about 80 gsm, or between about 30 and about 50 gsm, or between about 36 and about 45 gsm, or between about 55 and about 75 gsm. Alternatively or in addition, the one or more sheets can have an uncrimped thickness of between about 50 pm and about 500 pm, between about 50 pm and about 350 pm, between about 60 pm and about 300 pm, or between about 60 pm and about 160 pm.
In some examples, the sheet material 8 can comprise a metal foil, for instance aluminium foil, optionally a paper-backed aluminium foil. In other examples, the sheet material may comprise an aerosol-generating material, for example, a paper reconstituted tobacco material, or an aerosol-generating film. Optionally, the aerosolgenerating film may be laminated on a supporting material, such as paper.
The body of material 5 can have a weight of from about 5 mg to about 15 mg per mm of length of said body, or between about 8 mg and about 12 mg per mm of length of said body, or about 10 mg per mm of length of said body.
The one or more sheets 8 can be crimped to increase the amount of sheet material that can be included in the body 5. At least one of the one of more sheets 8 extending through the body 5 can include a crimped sheet material formed having a crimp pattern including a series of substantially parallel ridges and grooves. In the present example, the sheet material 8 is crimped prior to being formed into the body 5. For instance, the sheet material 8 may be passed through a pair of crimping rollers. In the present example, the first body 5 comprises crimped sheet material 8 formed having a crimp pattern comprising a series of substantially parallel ridges and grooves. The crimping may make it easier to gather the sheet material 8 to form the body 5. The crimping may also increase the width of sheet material 8 that can be used to form a body 5 of a particular volume. Increasing the width of sheet material 8 in the body 5 may increase the available surface area of the sheet material in the body 5, which can increase the amount of moisture that may be absorbed by the body 5. Thus, increased amounts of condensate can be absorbed by the body 5, resulting in a more hygienic user experience when the article 1 is used in a non-combustible aerosol provision device. In the present example, the average spacing between adjacent ridges of the sheet material 8 is greater than about 0.3 mm. In addition, in the present example, the crimp amplitude is less than about 0.7 mm.
The crimp amplitude (also known as “crimping factor”) refers to the depth of the grooves the crimping forms in the sheet material 8 forming the body. That is, crimping the sheet material 8 produces a plurality of peaks and troughs in the sheet material 8 when viewed from a first side of the sheet material 8, as shown in Figure 3B, wherein the crimp amplitude ‘A’ is the depth of the troughs, measured from their peak. The crimping may form a ‘Zig-Zag’ formation or another shape. In some examples, adjacent grooves of the crimped sheet material 8 are spaced by a distance, or have a pitch ‘P’, in the range of 0.3 to 2 mm and, preferably, in the range of 0.4 to 1 mm. In some embodiments, adjacent grooves of the crimped sheet material are spaced by a distance in the range of 0.1 to 3 mm and, preferably, in the range of 0.2 to 2 mm. In some embodiments, adjacent grooves of the crimped sheet material 10 are spaced by a distance of at least 0.1 mm and, preferably, at least, 0.2, 0.5, 0.7, 1, 1.5, 2, 2.5 or 3 mm. In some embodiments, adjacent grooves of the crimped sheet material are spaced by a distance of at most 3 mm, for instance, at most, 2.5, 2, 1, 1.5, 0.7, 0.5, 0.2 or 0.1 mm.
For instance, the sheet material 8 can have a crimp with a crimp amplitude of less than 500 pm and spacing between peaks (or troughs) of at least 300 pm, at least 400 pm or at least 500 pm. In some embodiments, the sheet material 8 is heated as it is crimped. For example, the sheet material 8 may be passed between crimping rollers, wherein one or both of the crimping rollers is heated. For example, one or both of the rollers may be heated to a temperature of up to too degrees Celsius, for example 50 degrees Celsius or 60 degrees Celsius. The amount of pressure applied to the sheet material passing between the rollers may also be varied. Heating the roller/ s or applying a higher level of pressure to the sheet material can result in a higher level of crimping. For example, the crimp can be applied using a roller surface with a temperature of greater than 30 °C, greater than 40 °C or greater than 50 °C.
The bulk density of the body 5 can be between about 0.1 mg/mm11 and about 0.25 mg/mm11. In the present example, the bulk density of the body of material 5 is about 0.19 mg/mitf. In some embodiments, the body 5 has a bulk density of at least 0.1 mg/mm 1, 0.12 mg/mm11 or 0.15 mg/mm11 . The bulk density of a body of material can be measured by separating said body from an article and surrounding plug wraps and/or tipping paper, and removing any embedded objects, but including any additives added to the sheet material 8. For the purpose of calculating the bulk density of the body, the contribution of any axially extending hollow channels having a cross-sectional area greater than XXmm2 are excluded from the calculation. The density may be calculated as a bulk density based on the weight of the sheet material 8 and any additives added to the sheet material 8, and the overall volume occupied by the sheet material 8. For instance, the overall volume of the body of material 5 measured inside the plug wrap 6. In some examples, the body of material is not formed from a sheet material, but from another fibrous material, such as cotton.
In some examples, aerosol-modifying agent or aerosol former may be added to the material forming the body of material. For example, a flavour carrier or glycerol may be applied to the sheet material 8 before forming the body of material 5. In some examples, the body of material 5 includes an aerosol-generating film comprising lactic acid, for instance as described in WO 2021/ 105449. In some examples, the body of material comprises an acid, for instance an acid selected from the group consisting of lactic acid, levulinic acid, benzoic acid, citric acid, 2 -methylbutyric acid, or 2- methylvaleric acid. In some embodiments, the acid is lactic acid. In some embodiments, the acid is levulinic acid. The term lactic acid is synonymous with the term 2- hydroxypropanoic acid and covers both D and L enantiomers separately or a mixture thereof. For example, the lactic acid can be a mixture (for example a racemic mixture) of D-2-hydroxypropanoic acid and L-2-hydroxypropanoic acid. The term levulinic acid is synonymous with the term 4 -oxopentanoic acid.
The use of an acid in the body of material 5 can be particularly advantageous when the aerosol generating material comprises nicotine, as the acid can allow for optimal protonation of the nicotine in the resulting aerosol, for example, by altering the ratio of free-base nicotine to protonated nicotine. It is understood that protonation of the nicotine in the aerosol -generating material changes the ratio of nicotine (gas) icotine (particulate/liquid) by increasing the amount of nicotine present in the particulate/liquid phase. The aerosols produced by the aerosol-generating materials described herein deliver an appropriate amount of nicotine to the user. In some examples, the body 5 comprises aerosol-former in an amount from 10% to 30% by weight.
In other examples,, the body of material 5 comprises aerosol former in an amount less than 5% by weight.
In other examples, the body of material 5 comprises a combustion retarding material, for instance a combustion retarding salt and an aerosol-generating film, as described in WO 2020/ 183163 Al, or a salt gel. In some embodiments, the combustion retarding salt is incorporated into an amorphous solid material, to form a salt gel as referred to herein. This means that the combustion retarding salt is included within the amorphous solid composition. For example, during the preparation of the amorphous solid material, a liquid precursor of the amorphous solid material is mixed with combustion retarding salt. This distributes the combustion retarding salt throughout the resultant amorphous solid material. In some embodiments, the distribution of the combustion retarding salt is even throughout the amorphous solid and this may be advantageous as the combustion retarding effect is effective across all of the material. The combustion retarding salt may be added in the form of a solution or suspension. Alternatively, the combustion retarding salt may be added to the liquid precursor in solid form, for example in particulate form, such as a powder. In other embodiments, the combustion retarding salt is added or applied to an amorphous solid material. For example, once the amorphous solid material has been prepared, a solution or suspension comprising the combustion retarding salt is applied to the surface of the amorphous solid material, to deposit the combustion retarding salt on the surface of the amorphous solid material.
In the present example, the upstream component 4 has a length of about 6 mm. In alternative embodiments the upstream component 4 may have any length in the range of about 3 mm to about 15 mm, preferably about 4 mm to about 6 mm.
The outer circumference of the upstream component 4 is substantially the same as the outer circumference of the rod of aerosol-generating material 2, such that there is a smooth transition between these components. Although only a single body of material 5 has been described with reference to the drawings, in alternative embodiments, the article 1 of Figures 1 and 2 may include additional sections, such as additional bodies of material or other sections such as tubular sections. The additional sections may be immediately upstream, immediately downstream of the upstream component 4, or both, and may be formed from any materials suitable for use in the article described herein.
In some examples, plug wrap 6 has a basis weight between about 27 gsm and about 70 gsm, for instance about 36 gsm, about 41 gsm, or about 44 gsm. Figure 4 is a side-on cross-sectional view of a further article 1”, in which a second component 41 is provided downstream of the aerosol-generating portion 2.
In some examples, the upstream components 4 and second component 41 define a cavity therebetween. Said cavity may suitably be filled with a granular aerosol- generating material. Providing a second component 41 immediately downstream of the rod of aerosol-generating material 2 can help to prevent aerosol-generating material from falling out into the cooling section 13, particularly where the aerosol-generating material is provided in particulate form. In some examples, the second component 41 is substantially the same as the upstream component 4. Suitably, the second component 41 may comprise any material or configuration of materials as described above in relation to the upstream component 4. In some examples, where the second component 41 is provided downstream of the aerosol-generating portion, the length of the upstream component 4 may be reduced, compared to the length of the upstream component 4 in the example of Figures 1 and 2, to accommodate the extra length of the second component 41 without altering the length of the article 1” overall. In other examples, the upstream component 4 may have the same length as described in relation to Figures 1 and 2, and the length of the mouthpiece body 14, or the cooling section 13 may be reduced.
In other examples, the second component 41 may differ from the upstream component 4. For example, body 51 may be formed from a different sheet material than that from which body 5 is formed, differing for instance in the material composition, or in the basis weight, width or crimp pattern of the material.
In some examples, the downstream body 51 may comprise an aerosol-modifying additive, for instance applied to the sheet material from which the body 51 is formed, or embedded in the body 51 as a capsule, microcapsules, or a thread loaded with an aerosol-modifying additive.
The one or more capsules incorporated into the body 51, for instance in the form of a plurality of capsules such as microcapsules, or a single capsule, can be heat-activated and/ or pressure-activated to release the capsule payload. In some embodiments, the one or more capsules can be arranged to release their payload, for instance in the form of a liquid payload, when exposed to temperatures greater than too degrees centigrade, or greater than 150 degrees centigrade. Alternatively or in addition, the one or more capsules can be arranged to release their payload upon exposure to force applied to the capsule, for instance by a consumer pinching the body of material 51. In either case, since the body of material 51 is in a location adjacent to the aerosol-generating material, the body of material 51 is exposed to heat when the aerosol-generating material is heated and as a result the capsule payload can be efficiently aerosolised and delivered to the consumer. In the present example, the second component 41 comprises an aerosol-modifying additive. In the present example, the aerosol-modifying additive is provided in the form of an aerosol-generating film, which is laminated on the sheet material from which the body 51 is formed. The body 51 is configured as described in relation to body 5, except that the sheet material in the present case is a laminate material comprising an aerosolgenerating film laminated on a paper support material.
In other examples, aerosol-generating film may be provided in the form of strips, which may be gathered into the body 51 with the sheet material forming the body.
In other examples, the body 51 may be omitted and an aerosol-modifying additive may be provided in a downstream portion of the rod of aerosol-generating material 2. For instance, a heat-activated capsule may be embedded in a downstream portion of the rod of aerosol-generating material 2.
Figure 5 is a side-on cross-sectional view of a further article 1”’. Article 1”’ is substantially the same as article 1, except that a tubular element 16 is provided at the upstream end of the article 1 in place of the upstream component 4 of Figure 1. Advantageously, providing a tubular element 16 at the upstream end of the article 1”’ can space the aerosol-generating portion, in use, from a distal end of a cavity of an aerosol provision device. The dimensions of tubular element 16 may suitably be configured such that the aerosol-generating portion 16 is displaced, in use, towards a portion of an aerosol provision device where improved heating of the aerosolgenerating material has been found. In some examples, the tubular element 16 has a length between 5% and 13% of the length of the article 1”’.
In some examples, the tubular element 16 has a wall thickness greater than 1 mm. For instance, the tubular element 16 may have a wall thickness between 1 mm and 2 mm. In the present example, the tubular element 16 has a wall thickness of about 1.5 mm.
In the present example, the tubular element 16 is formed from paper. In some examples, the tubular element 16 may be formed in the same way as cooling section 13. In the present example, the tubular element 16 and the cooling section 13 may have the same wall thickness. Advantage - manufactured by forming continuous rod from tobacco and tube portions and alternating cuts. In other examples, the tubular element 16 has a wall thickness greater than the wall thickness of the cooling section 13. For instance to prevent fallout of tobacco material.
In some examples, the tubular element 16 may be embedded in a body of material, for instance a section formed from gathered sheet material. For example, the body of material 5 may comprise a tubular element 16.
In the present example, the tubular element 16 has the same outer diameter as the rod of aerosol-generating material 2. In other examples, the tubular element 16 may have a smaller outer diameter than the rod of aerosol-generating material 2, for instance where the tubular element 16 is provided embedded in a body of material.
In examples where the tubular element 16 is embedded in a body of material, the axially extending hollow channel defined by the tubular element 16 may suitably have a diameter of at least 0.5 mm, or at least 0.75 mm, or at least 1 mm, or at least 1.5 mm, or at least 2 mm.
In some examples, the rod of aerosol-generating material may comprise an axially disposed aerosol-modifying additive, for instance a capsule or microcapsules, or a thread loaded with aerosol-modifying additive. In some examples, the tubular element 16 can channel aerosol through an axial portion of the rod of aerosol-generating material 2, in use, which may enhance the deliveiy of the axially disposed aerosolmodifying additive. The one or more capsules incorporated into the rod of aerosolgenerating material, for instance in the form of a plurality of capsules such as microcapsules, or a single capsule, can be heat-activated and/or pressure-activated to release the capsule payload. In some embodiments, the one or more capsules can be arranged to release their payload, for instance in the form of a liquid payload, when exposed to temperatures greater than too degrees centigrade, or greater than 150 degrees centigrade. Alternatively or in addition, the one or more capsules can be arranged to release their payload upon exposure to force applied to the capsule, for instance by a consumer pinching the rod of aerosol-generating material. In either case, since the rod of aerosol-generating material is exposed to heat, the capsule payload can be efficiently aerosolised and delivered to the consumer.
Figure 6 is a side-on cross-sectional view of a further article 1””. Article 1”” comprises an upstream component 4 at the upstream end of the article, and a tubular element 16 positioned in between the upstream component 4 and the rod of aerosol-generating material 2. The mouthpiece 3 of article 1”” is substantially the same as the mouthpiece of article 1’.
In the present example, the article 1”” is provided with first and second parallel rows of perforations 18 through the wrapper 7 and tubular element 16, providing ventilation into the article 1”” at a position upstream of the rod of aerosol-generating material 2.
The perforations 18 can provide between 0% and 20% of the total ventilation into the article 1””. Advantageously, the provision of an upstream component 4 at the upstream end of the article, and a ventilated tubular element 16 upstream of the rod of aerosolgenerating material 2 can reduce the amount of condensate which exits from the upstream end of the article 1””, in use. This can provide hygiene benefits for the use of the article 1”” in a non-combustible aerosol provision system. The various embodiments described herein are presented only to assist in understanding and teaching the claimed features. These embodiments are provided as a representative sample of embodiments only, and are not exhaustive and/or exclusive. It is to be understood that advantages, embodiments, examples, functions, features, structures, and/or other aspects described herein are not to be considered limitations on the scope of the invention as defined by the claims or limitations on equivalents to the claims, and that other embodiments may be utilised and modifications may be made without departing from the scope of the claimed invention. Various embodiments of the invention may suitably comprise, consist of, or consist essentially of, appropriate combinations of the disclosed elements, components, features, parts, steps, means, etc, other than those specifically described herein. In addition, this disclosure may include other inventions not presently claimed, but which may be claimed in future.
As used herein, the term “delivery system” is intended to encompass systems that deliver at least one substance to a user, and includes: combustible aerosol provision systems, such as cigarettes, cigarillos, cigars, and tobacco for pipes or for roll-your-own or for make-your-own cigarettes (whether based on tobacco, tobacco derivatives, expanded tobacco, reconstituted tobacco, tobacco substitutes or other smokable material); non-combustible aerosol provision systems that release compounds from an aerosol-generating material without combusting the aerosol-generating material, such as electronic cigarettes, tobacco heating products, and hybrid systems to generate aerosol using a combination of aerosol-generating materials; and aerosol-free deliveiy systems that deliver the at least one substance to a user orally, nasally, transdermally or in another way without forming an aerosol, including but not limited to, lozenges, gums, patches, articles comprising inhalable powders, and oral products such as oral tobacco which includes snus or moist snuff, wherein the at least one substance may or may not comprise nicotine.
According to the present disclosure, 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.
In some embodiments, the delivery system is a non-combustible aerosol provision system, such as a powered non-combustible aerosol provision system.
In some embodiments, 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.
In some embodiments, the non-combustible aerosol provision system is an aerosolgenerating material heating system, also known as a heat-not-burn system. An example of such a system is a tobacco heating system.
In some embodiments, the non-combustible aerosol provision system is a hybrid system to generate aerosol using a combination of aerosol-generating materials, one or a plurality of which may be heated. Each of the aerosol-generating materials may be, for example, in the form of a solid, liquid or gel and may or may not contain nicotine. In some embodiments, 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.
Typically, the non-combustible aerosol provision system may comprise a non- combustible aerosol provision device, also referred to as a heating device, and a consumable or article for use with the non-combustible aerosol provision device. In some embodiments, the disclosure relates to consumables comprising aerosolgenerating material and configured to be used with non-combustible aerosol provision devices. These consumables are sometimes referred to as articles throughout the disclosure.
In some embodiments, the non-combustible aerosol provision system, such as a noncombustible 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. In some embodiments, 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. In some embodiments, 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.
In some embodiments, 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. In some embodiments, the substance to be delivered comprises an active substance, also referred to as an active material.
The active substance or material 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 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. In some embodiments, the active substance comprises nicotine. In some embodiments, the active substance comprises caffeine, melatonin or vitamin B12.
As noted herein, the active substance may comprise one or more constituents, derivatives or extracts of cannabis, such as one or more cannabinoids or terpenes.
As noted herein, the active substance may comprise or be derived from one or more botanicals or constituents, derivatives or extracts thereof. As used herein, 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. Alternatively, 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, rosemaiy, saffron, lavender, lemon peel, mint, juniper, elderflower, vanilla, wintergreen, beefsteak plant, curcuma, turmeric, sandalwood, cilantro, bergamot, orange blossom, myrtle, cassis, valerian, pimento, mace, damien, maijoram, olive, lemon balm, lemon basil, chive, carvi, verbena, tarragon, geranium, mulberiy, ginseng, theanine, theacrine, maca, ashwagandha, damiana, guarana, chlorophyll, baobab or any combination thereof. 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, Memtha longifolia, Mentha suaveolens variegata, Mentha pulegium, Mentha spicata c.v. and Mentha suaveolens In some embodiments, the active substance comprises or is derived from one or more botanicals or constituents, derivatives or extracts thereof and the botanical is tobacco.
In some embodiments, 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. In some embodiments, 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. In some embodiments, the substance to be delivered comprises a flavour.
As used herein, the terms "flavour" and "flavourant" refer to materials which, where local regulations permit, may be 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, beriy, red berry, cranberry, peach, apple, orange, mango, clementine, lemon, lime, tropical fruit, papaya, rhubarb, grape, durian, dragon fruit, cucumber, blueberry, mulberiy, citrus fruits, Drambuie, bourbon, scotch, whiskey, gin, tequila, rum, spearmint, peppermint, lavender, aloe vera, cardamom, celery, cascarilla, nutmeg, sandalwood, bergamot, geranium, khat, naswar, betel, shisha, pine, honey essence, rose oil, vanilla, lemon oil, orange oil, orange blossom, cherry blossom, cassia, caraway, cognac, jasmine, ylang- ylang, sage, fennel, wasabi, piment, ginger, coriander, coffee, hemp, a mint oil from any species of the genus Mentha, eucalyptus, star anise, cocoa, lemongrass, rooibos, flax, ginkgo biloba, hazel, hibiscus, laurel, mate, orange skin, rose, tea such as green tea or black tea, thyme, juniper, elderflower, basil, bay leaves, cumin, oregano, paprika, rosemary, saffron, lemon peel, mint, beefsteak plant, curcuma, cilantro, myrtle, cassis, valerian, pimento, mace, damien, maijoram, olive, lemon balm, lemon basil, chive, carvi, verbena, tarragon, limonene, thymol, camphene), flavour enhancers, bitterness receptor site blockers, sensorial receptor site activators or stimulators, sugars and/or sugar substitutes (e.g., sucralose, acesulfame potassium, aspartame, saccharine, cyclamates, lactose, sucrose, glucose, fructose, sorbitol, or mannitol), and other additives such as charcoal, chlorophyll, minerals, botanicals, or breath freshening agents. They may be imitation, synthetic or natural ingredients or blends thereof. They may be in any suitable form, for example, liquid such as an oil, solid such as a powder, or gas. In some embodiments, the flavour comprises menthol, spearmint and/or peppermint. In some embodiments, the flavour comprises flavour components of cucumber, blueberry, citrus fruits and/or redberry. In some embodiments, the flavour comprises eugenol. In some embodiments, the flavour comprises flavour components extracted from tobacco. In some embodiments, the flavour comprises flavour components extracted from cannabis.
In some embodiments, 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 alimited 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 semi-solid (such as a gel) which may or may not contain an active substance and/or flavourants.
The aerosol-generating material may comprise one or more active substances and/or flavours, one or more aerosol-former materials, and optionally one or more other functional material. The aerosol-generating material may comprise a binder, such as a gelling agent, and an aerosol former. Optionally, a substance to be delivered and/or filler may also be present. Optionally, a solvent, such as water, is also present and one or more other components of the aerosol-generating material may or may not be soluble in the solvent. In some embodiments, the aerosol-generating material is substantially free from botanical material. In particular, in some embodiments, the aerosol-generating material is substantially tobacco free.
The aerosol-generating material may comprise or be in the form of an aerosolgenerating film. The aerosol-generating film may comprise a binder, such as a gelling agent, and an aerosol former. Optionally, a substance to be delivered and/ or filler may also be present. The aerosol-generating film may be substantially free from botanical material. In particular, in some embodiments, the aerosol-generating material is substantially tobacco free.
The aerosol-generating film may have a thickness of about 0.015 mm to about 1 mm. For example, the thickness may be in the range of about 0.05 mm, 0.1 mm or 0.15 mm to about 0.5 mm or 0.3 mm.
The aerosol-generating material may comprise more than one film, and the thickness described herein may refer to the aggregate thickness of those films.
The aerosol-generating film may be continuous. For example, the film may comprise or be a continuous sheet of material. The sheet may be in the form of a wrapper, it may be gathered to form a gathered sheet or it may be shredded to form a shredded sheet. The shredded sheet may comprise one or more strands or strips of aerosol-generating material.
The aerosol-generating film maybe discontinuous. For example, the aerosol-generating film may comprise one or more discrete portions or regions of aerosol-generating material, such as dots, stripes or lines, which may be supported on a support. In such embodiments, the support may be planar or non-planar.
The aerosol-generating film may be formed by combining a binder, such as a gelling agent, with a solvent, such as water, an aerosol-former and one or more other components, such as one or more substances to be delivered, to form a slurry and then heating the slurry to volatilise at least some of the solvent to form the aerosolgenerating film.
The sluriy may be heated to remove at least about 60 wt%, 70 wt%, 80 wt%, 85 wt% or 90 wt% of the solvent.
The aerosol-generating material may comprise or be an “amorphous solid”. In some embodiments, the aerosol-generating materiel comprises an aerosol-generating film that is an amorphous solid. The amorphous solid may be a “monolithic solid”. The amorphous solid may be substantially 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. In some embodiments, the amorphous solid may, for example, comprise from about 50wt%, 6owt% or 70wt% of amorphous solid, to about 90wt%, 95wt% or ioowt% of amorphous solid.
The amorphous solid may be substantially free from botanical material. The amorphous solid may be substantially tobacco free.
The aerosol-former material may comprise one or more constituents capable of forming an aerosol. In some embodiments, the aerosol-former material may comprise one or more of glycerol, propylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, 1,3-butylene glycol, erythritol, meso-Eiythritol, ethyl vanillate, ethyl laurate, a diethyl suberate, triethyl citrate, triacetin, a diacetin mixture, benzyl benzoate, benzyl phenyl acetate, tributyrin, lauiyl acetate, lauric acid, myristic acid, and propylene carbonate. The one or more other functional materials may comprise one or more of apH regulators, colouring agents, preservatives, binders, fillers, stabilizers, and/or antioxidants.
The material may be present on or in a support, to form a substrate. The support may, for example, be or comprise paper, card, paperboard, cardboard, reconstituted material, a plastics material, a ceramic material, a composite material, glass, a metal, or a metal alloy. In some embodiments, the support comprises a susceptor. In some embodiments, 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 (also referred to herein as an aerosol-modifying additive) 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 may be in powder, thread or granule form. The aerosol-modifying agent may be free from filtration material.

Claims

Claims
1. An article for use in a non-combustible aerosol provision system, the article comprising an aerosol-generating portion and a downstream portion downstream of the aerosol-generating portion, the aerosol-generating portion comprising a first hollow tubular element, a rod of aerosol -generating material, and a second hollow tubular element, wherein the first and second hollow tubular elements are positioned adjacent to and abutting an upstream and a downstream end of the rod of aerosol-generating material, respectively.
2. An article according to claim 1, wherein the aerosol-generating portion comprises an aerosol-modifying additive, wherein the aerosol-modifying additive is provided only in or in greater concentration in a section forming a downstream end of the aerosol-generating portion or of the rod of aerosol-generating material, and wherein the aerosol-modifying additive is arranged to be released into aerosol generated by the aerosol-generating material when heated.
3. An article according to claim 2, wherein the second hollow tubular element comprises the aerosol-modifying additive, optionally wherein a wall of the second hollow tubular element comprises the aerosol-modifying additive.
4. An article according to claim 1, 2 or 3, wherein the first hollow tubular element has an internal diameter smaller than an internal diameter of the second hollow tubular element.
5. An article according to any one of claims 1 to 3, wherein the first and second hollow tubular elements have substantially the same wall thickness and internal diameter.
6. An article according to any one of claims 1 to 5, wherein the first and second hollow tubular elements have a wall thickness of at least 0.2 mm, or at least 0.5 mm, or at least 1 mm, or at least 1.5 mm.
7. An article according to any one of claims 1 to 6, wherein the first hollow tubular element has a wall thickness of at least 1 mm, or at least 1.2 mm, or at least 1.5 mm.
8. An article according to any one of claims 1 to 7, wherein the first and second hollow tubular elements are formed from paper.
9. An article for use in a non-combustible aerosol provision system, the article comprising an aerosol-generating portion comprising an aerosol-generating material and an aerosol-modifying additive, wherein the aerosol-modifying additive is provided only in or in greater concentration in a section forming a downstream end of the aerosol-generating portion, and wherein the aerosol-modifying additive is arranged to be released into aerosol generated by the aerosol -generating material when heated.
10. An article according to any one of claims 2 to 9, wherein the aerosol-modifying additive is provided in a body of material at the downstream end of the aerosolgenerating portion.
11. An article according to any one of claims 2 to 10, wherein the aerosol-modifying additive is provided in an additive release vessel, optionally in a capsule, a plurality of microcapsules, on a thread, or in an aerosol-generating film.
12. An article according to any one of claims 1 to 11, comprising an upstream portion upstream of the aerosol-generating portion.
13. An article for use in a non-combustible aerosol provision system, the article comprising an aerosol-generating portion and an upstream portion upstream of the aerosol-generating portion, wherein the aerosol-generating portion comprises a rod of aerosol-generating material, and wherein the upstream portion is free of aerosolgenerating material, and wherein the upstream portion extends between 5% and 13% along the length of the article.
14. An article according to claim 12 or 13, wherein the upstream portion comprises a body of material.
15. An article according to claim 14, wherein the resistance to draw through the length of the body of material of the upstream portion is between about 1.1 mmH20 per mm of length of the body of material and about 4 mmH20 per mm of length of the body of material.
16. An article according to claim 14 or 15, wherein the resistance to draw through length of the body of material of the upstream portion is less than 10 mmH20, or less than 8 mmH20, or less than 6 mmH20, or less than 5 mmH20.
17. An article according to claim 14, 15 or 16, wherein the body of material of the upstream portion comprises an axially extending hollow channel.
18. An article according to claim 17, wherein the axially extending hollow channel has a maximum inner radial dimension of at least 0.5 mm, or at least 0.75 mm, or at least 1 mm, or at least 1.5 mm, or at least 2 mm.
19. An article according to any one of claims 14 to 18, wherein the average bulk density of the body is between about 0.1 mg/mm 1 and 0.25 mg/mm11
20. An article according to any one of claims 14 to 19, wherein the body of material comprises sheet material, optionally gathered sheet material.
21. An article according to claim 20, wherein the sheet material is crimped.
22. An article according to claim 20 or 21, wherein the sheet material comprises a plurality of portions or strips of sheet material.
23. An article according to claim 20, 21 or 22, wherein the sheet material comprises paper and/or a metal foil.
24. An article according to any one of claims 14 to 23, wherein the upstream portion is circumscribed by a wrapping material comprising a metal foil.
25. An article according to any one of claims 1 to 24, wherein the aerosol- generating material comprises tobacco, and/or a non-tobacco botanical, and optionally including an active substance.
26. An article according to any one of claims 1 to 25, wherein ventilation is provided into the article, and the level of ventilation is between 30% and 75%, or between 40% and 65%.
2TJ. A non-combustible aerosol provision system comprising: a non-combustible aerosol-provision device, wherein the device comprises a heating chamber in which an article may be inserted; and an article comprising an aerosol-generating portion, wherein the aerosol- generating portion comprises a rod of aerosol-generating material and a section immediately upstream of the rod of aerosol-generating material, the section being configured such that, in use, an upstream end of the rod of aerosol-generating material is offset from a terminal end of the heating chamber by at least 4 mm, optionally by at least 5 mm, or at least 6 mm.
28. A system according to claim 27, wherein the section is a hollow tubular section, or wherein the section comprises a body of material formed from a gathered sheet of fibrous material.
29. A component for use in an article for use in a non-combustible aerosol provision system, comprising a section formed from a gathered sheet or sheets of fibrous material, wherein the pressure drop across the component is between about 1.1 mmH20 per mm of length of the component and about 4mmH20 per mm of length of the component, and wherein: the gathered sheet or sheets of fibrous material are formed from a material which is non-combustible or are treated with a combustion-retarding additive; or the section comprises a wrapper which is formed from a material which is non- combustible or treated with a combustion-retarding additive.
30. A component according to claim 29, wherein the section is circumscribed by the wrapper along its full length.
31. A component according to claim 30, wherein the wrapper comprises a metal foil, optionally aluminium foil.
32. A component according to any one of claims 29 to 31, wherein the gathered sheet or sheets of fibrous material define(s) a plurality of passages through the section.
33. A component according to any one of claims 29 to 32, wherein the component has a length of 3 mm to 8 mm.
34- An article for use in a non-combustible aerosol provision system, the article comprising an upstream end, a downstream end, a rod of aerosol-generating material, and a component according to any one of claims 29 to 33 upstream of the rod of aerosol-generating material.
35. An article according to claim 34, wherein the component is at the upstream end of the article.
EP24719606.6A 2023-03-29 2024-03-28 Aerosol generating article Pending EP4687516A1 (en)

Applications Claiming Priority (3)

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GBGB2304660.0A GB202304660D0 (en) 2023-03-29 2023-03-29 A component and an article for use in an aerosol provision system
GBGB2306842.2A GB202306842D0 (en) 2023-03-29 2023-05-09 A component and an article for use in an aerosol provision system
PCT/GB2024/050870 WO2024201065A1 (en) 2023-03-29 2024-03-28 Aerosol generating article

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CN121620305A (en) 2026-03-06

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