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EP3873238A1 - Consommable de substitution à l'acte de fumer - Google Patents

Consommable de substitution à l'acte de fumer

Info

Publication number
EP3873238A1
EP3873238A1 EP19795175.9A EP19795175A EP3873238A1 EP 3873238 A1 EP3873238 A1 EP 3873238A1 EP 19795175 A EP19795175 A EP 19795175A EP 3873238 A1 EP3873238 A1 EP 3873238A1
Authority
EP
European Patent Office
Prior art keywords
aerosol
tobacco
slurry
consumable
forming substrate
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
EP19795175.9A
Other languages
German (de)
English (en)
Inventor
Kate FERRIE
Edward Ross SHENTON
Jill JONES
John Williams
Peter Besson
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.)
IMPERIAL TOBACCO Ltd
Original Assignee
Nerudia Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nerudia Ltd filed Critical Nerudia Ltd
Publication of EP3873238A1 publication Critical patent/EP3873238A1/fr
Pending legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
    • A24B15/10—Chemical features of tobacco products or tobacco substitutes
    • A24B15/12—Chemical features of tobacco products or tobacco substitutes of reconstituted tobacco
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
    • A24B15/10—Chemical features of tobacco products or tobacco substitutes
    • A24B15/12—Chemical features of tobacco products or tobacco substitutes of reconstituted tobacco
    • A24B15/14—Chemical features of tobacco products or tobacco substitutes of reconstituted tobacco made of tobacco and a binding agent not derived from tobacco
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D1/00—Cigars; Cigarettes
    • A24D1/20—Cigarettes specially adapted for simulated smoking devices

Definitions

  • the present disclosure relates to methods of forming an HNB consumable for use in a smoking substitute system and HNB consumables formed by such methods.
  • tobacco waste is produced.
  • the tobacco waste is typically in the form of tobacco dust, leaf or stem.
  • the tobacco waste can be collected and processed to provide what is known as reconstituted tobacco, or“recon”.
  • slurry-type recon Two distinct methods are most commonly employed to manufacture reconstituted tobacco, these are i) a paper-making process (i.e. to provide“Paper Recon”), and ii) slurry casting (to provide“Slurry-type Recon”).
  • a paper-making process i.e. to provide“Paper Recon”
  • slurry casting to provide“Slurry-type Recon”.
  • the products that result from these distinct processes have notably different properties and characteristics.
  • slurry-type recon generally has improved aroma/flavour and nicotine content in comparison to paper recon, yet slurry-type recon is typically more easily broken and often has poorer uniformity of quality.
  • the tobacco waste is milled to a fine powder and mixed with an aqueous solvent, typically water, and combined with a binding agent.
  • the resultant slurry may undergo further milling to reduce the particle size of the tobacco material further.
  • the slurry is then cast on a surface and dried to form a sheet.
  • the dried sheet may be shredded to be used within various tobacco products, for example as a cigarette filler.
  • the tobacco waste is mechanically beaten in the presence of an aqueous solvent to digest and process the tobacco into workable fibres. Subsequently, water soluble compounds present in the tobacco are extracted into the aqueous solvent. The aqueous extract and insoluble fibrous portion are separated. The separated fibrous portion, which may also be described as a“pulp”, undergoes further processing to form a base sheet via a typical paper-making procedure. The aqueous extract is concentrated and then reapplied to the base sheet. The base sheet is then dried to form a paper.
  • the smoking of tobacco is generally considered to expose a smoker to potentially harmful substances. It is generally thought that a significant amount of the potentially harmful substances are generated through the heat caused by the burning and/or combustion of the tobacco and the constituents of the burnt tobacco in the tobacco smoke itself.
  • Conventional combustible smoking articles such as cigarettes, typically comprise a cylindrical rod of tobacco comprising shreds of tobacco which is surrounded by a wrapper, and usually also a cylindrical filter axially aligned in an abutting relationship with the wrapped tobacco rod.
  • the filter typically comprises a filtration material which is circumscribed by a plug wrap.
  • the wrapped tobacco rod and the filter are joined together by a wrapped band of tipping paper that circumscribes the entire length of the filter and an adjacent portion of the wrapped tobacco rod.
  • a conventional cigarette of this type is used by lighting the end opposite to the filter, and burning the tobacco rod.
  • the smoker receives mainstream smoke into their mouth by drawing on the mouth end or filter end of the cigarette.
  • Combustion of organic material such as tobacco is known to produce tar and other potentially harmful by-products.
  • smoking substitute systems or“substitute smoking systems” in order to avoid the smoking of tobacco.
  • Such smoking substitute systems can form part of nicotine replacement therapies aimed at people who wish to stop smoking and overcome a dependence on nicotine.
  • Smoking substitute systems include electronic systems that permit a user to simulate the act of smoking by producing an aerosol (also referred to as a“vapour”) that is drawn into the lungs through the mouth (inhaled) and then exhaled.
  • aerosol also referred to as a“vapour”
  • the inhaled aerosol typically bears nicotine and/or flavourings without, or with fewer of, the odour and health risks associated with traditional smoking.
  • smoking substitute systems are intended to provide a substitute for the rituals of smoking, whilst providing the user with a similar experience and satisfaction to those experienced with traditional smoking and with combustible tobacco products.
  • Some smoking substitute systems use smoking substitute articles that are designed to resemble a traditional cigarette and are cylindrical in form with a mouthpiece at one end.
  • HNB heat not burn
  • a typical HNB smoking substitute system may include a device and a consumable.
  • the consumable may include the tobacco material.
  • the device and consumable may be configured to be physically coupled together.
  • heat may be imparted to the tobacco material by a heating element of the device, wherein airflow through the tobacco material causes moisture in the tobacco material to be released as vapour.
  • a vapour may also be formed from a carrier in the tobacco material (this carrier may for example include propylene glycol and/or vegetable glycerine) and additionally volatile compounds released from the tobacco. The released vapour may be entrained in the airflow drawn through the tobacco.
  • the vapour passes through the consumable (entrained in the airflow) from an inlet to a mouthpiece (outlet), the vapour cools and condenses to form an aerosol for inhalation by the user.
  • the aerosol will normally contain the volatile compounds.
  • HNB smoking substitute systems heating as opposed to burning the tobacco material is believed to cause fewer, or smaller quantities, of the more harmful compounds ordinarily produced during smoking. Consequently, the HNB approach may reduce the odour and/or health risks that can arise through the burning, combustion and pyrolytic degradation of tobacco.
  • the present disclosure relates to method of forming an HNB consumable comprising an aerosol-forming substrate having an increased concentration of volatile compound.
  • the present invention provides a method of forming an HNB consumable comprising an aerosol-forming substrate, the method comprising a slurry-type process for forming a reconstituted plant material, wherein a casing is provided in the slurry prior to casting into a sheet.
  • slurry-type corresponds to a reconstituted plant material made by slurry-casting as opposed to a paper-making process.
  • an aerosol-forming substrate which will itself include a volatile compound dosed with a casing
  • the user is provided with an enhanced flavour profile.
  • This is advantageous in light of the limited current flavour profile options for HNB consumables.
  • casing, particularly sugar, to the aerosolforming substrate also negates the reliance on the natural sugar content of the tobacco plant, therefore an aerosol-forming substrate with increased sugar content is provided.
  • Inclusion of a casing component in the aerosol-forming substrate of an HNB consumable can be beneficial to mitigate negative qualities of plant material, for example reduction in the alkalinity of a resultant aerosol (associated with“tongue bite”) or mellowing of harsh or ashy flavours.
  • the method of the first aspect for manufacturing a heat-not-burn (HNB) consumable comprising an aerosolforming substrate, wherein the aerosol forming substrate is a slurry-type reconstituted plant material comprises the steps of:
  • the aerosol-forming substrate formed by the present methods is capable of being heated to release at least one volatile compound that can form an aerosol.
  • the aerosol-forming substrate may be located at the upstream end of the consumable.
  • upstream and downstream are intended to refer to the flow direction of the vapour/aerosol i.e. with the downstream end of the consumable being the mouth end or outlet where the aerosol exits the consumable for inhalation by the user.
  • the upstream end of the consumable is the opposing end to the downstream end.
  • the aerosol-forming substrate comprises at least one volatile compound that is intended to be vaporised/aerosolised and that may provide the user with a recreational and/or medicinal effect when inhaled.
  • Suitable chemical and/or physiologically active volatile compounds include the group consisting of: nicotine, cocaine, caffeine, opiates and opioids, cathine and cathinone, kavalactones, mysticin, beta-carboline alkaloids, salvinorin A together with any combinations, functional equivalents to, and/or synthetic alternatives of the foregoing.
  • Casing components are known in the tobacco industry and are defined herein as a component which enhances the flavour profile and/or user experience when used in an HNB consumable. Casing components preferably differ from flavou rants, i.e. they preferably do not themselves provide any significant new flavour to the aerosol produced by the aerosol-forming substrate. Casings may be used to mitigate negative qualities of plant material, for example reduction in the alkalinity of a resultant aerosol (associated with“tongue bite”) or mellowing of harsh or ashy flavours.
  • the casing component may be one or more selected from sugars and non-sugar casings.
  • the casing component comprises a sugar.
  • the casing component consists essentially of one or more sugars.
  • the casing component consists of one or more sugars and one or more non-sugar casings.
  • the sugar may be selected from sucrose, fructose, lactose, glucose, dextrose, mannose, galactose, rhamnose, maltose and xylose, and combinations thereof.
  • the sugar may be selected from natural, unrefined sugars, for example maple sugar, cane sugar, molasses, date sugar, honey, agave nectar, and brown rice syrup.
  • Non-sugar casings may be selected from cocoa, carob bean extract, liquorice, fruit extracts.
  • a casing component comprising a sugar provides the user with an enhanced flavour experience.
  • the casing component is provided in the slurry at a level suitable to result in a content in the dried aerosolforming substrate of up to 20 wt.%.
  • the content in the dried aerosol-forming substrate may have a lower limit of at least 2 wt % of the weight of the aerosol-forming substrate, such as at least 3 wt%, such as at least 4 wt%, such as at least 5 wt %, such as at least 10 wt %, such as at least 15 wt %m such as at least 20 wt %.
  • the casing component content in the dried aerosol-forming substrate may have an upper limit of at most 25 wt %, such as at most 20 wt %, such as at most 15 wt %, or such as at most 10 wt %.
  • the casing component content is 0.1 to 15 wt % of the aerosol-forming substrate.
  • the casing component is provided in a base liquid.
  • by“pre-mixing” the casing component with a base liquid prior to combining the“pre-mixture” with a slurry provides a safer, efficient and reproducible delivery of casing component to the slurry.
  • the casing component is soluble in the base liquid.
  • Preferable base liquids are water and polyhydric alcohols.
  • Suitable polyhydric alcohols include propylene glycol (PG), triethylene glycol, 1 ,2-butane diol and vegetable glycerine (VG)) and their esters (e.g. glycerol mono-, di- or tri-acetate).
  • PG propylene glycol
  • VG vegetable glycerine
  • esters e.g. glycerol mono-, di- or tri-acetate.
  • propylene glycol and vegetable glycerine are preferred.
  • the base liquid is water.
  • the non-toxicity and non-flammability of water minimises handling risks during processing.
  • the“premixing” of the casing component with a solvent prior to combination with the slurry improves the homogeneous nature of the casing component and the slurry mixture.
  • the dosed casing content contained within the base liquid is within the range 1 to 95 wt % based on the total weight of casing and base liquid. It is particularly preferred to have a casing content of 1 to 50 wt %, such as 1 to 25 wt. %, such as 1 to 15 wt % of the total weight casing and base liquid.
  • this provides sufficient dilution of casing with base liquid to provide safer handling of the casing during processing. Also, such a combination allows for good dispersion of casing within the base liquid.
  • the casing component comprises more than one constituent component
  • it is preferably provided in the form of a“pre-mixed” casing mixture.
  • the physical and organoleptic properties of the aerosol-substrate are improved due to increased homogeneity of the casing components to provide a balanced flavour and consistent user experience.
  • the addition of the casing component to the slurry provides a greater degree of homogeneity of the casing and plant material components. This provides the user with improved flavour profile and a more consistent experience when using the resultant HNB consumable.
  • the quantity of casing can also be tailored to provide bespoke blends of casing and plant material that are tailored to meet the user’s requirements.
  • a binder may also be included within the slurry. Therefore the methods may further comprise a step of incorporating a binder into the slurry.
  • the ground tobacco may be combined with the binder before combination with the aqueous medium.
  • the binder may be combined with the aqueous medium prior to combining the aqueous medium with the ground tobacco.
  • Binders may comprise starches and/or cellulosic binders such as methyl cellulose, ethyl cellulose, hydroxy propyl cellulose, hydroxyethyl cellulose and carboxymethyl cellulose, gums such as xanthan, guar, arabic and/or locust bean gum, organic acids and their salts such as alginic acid/ sodium alginate, agar and pectins.
  • the binder is included at a level to result in the binder content being 5 to 20 wt% of the aerosolforming substrate e.g. around 6 to 8 wt%.
  • the upper limit of binder is preferably up to 15 wt. %, such as up to 10 wt. %.
  • the binder content is above 5 wt%.
  • the slurry may also contain fillers, humectants, flavourants and/or preservatives. These may be combined with the ground plant material before combination with the aqueous medium, or alternatively can be added to the slurry separately
  • the total solids content of the slurry is between 15 % and 30 % of the total slurry weight. Of this preferred range about 50 to 90 % of the total solids content of the slurry should be the plant material.
  • the plant material content of the slurry is not critical, but it is preferred that the minimum amount of aqueous medium is used to avoid leaching of plant material solubles into the aqueous medium.
  • the slurry is formed by mixing the various components of the slurry. This may be achieved using a high energy mixer or a high shear mixer to homogenize the slurry. During mixing the slurry may optionally be heated.
  • the slurry may be vibrated to aid homogenization of the slurry. This may be achieved by vibrating a tank or silo in which the slurry is contained.
  • the slurry is cast onto a moving support surface, such as a dryer belt to form a sheet.
  • Casting of the sheet may be achieved by a roll coater system or a laminator, or any other method suitable in the art. It is preferred that the moisture of the sheet at casting is between 60 to 80 percent of the total weight of the cast slurry.
  • the cast sheet is then dried, for example by exposure to elevated temperatures and/or reduced pressures to remove excess moisture content from the sheet. Suitable drying methods include a steam dryer and/or heated air dryers. Alternatively, the sheet may be dried under ambient conditions,
  • the flavourant may be provided in solid or liquid form. It may include menthol, peppermint, spearmint, liquorice flavour, chocolate flavour, fruit flavour (including e.g. citrus, cherry etc.), vanilla flavour, spice flavour (e.g. ginger, cinnamon), coffee flavour, eucalyptus flavour, and tobacco flavour.
  • the flavourant may be evenly dispersed throughout the aerosolforming substrate or may be provided in isolated locations and/or varying concentrations throughout the aerosol-forming substrate.
  • the flavourant is evenly dispersed in the slurry resulting in an even dispersion throughout the aerosol-forming substrate.
  • the dosed flavourant content of the aerosol-forming substrate may have a lower limit of at least 0.1 wt % of the weight of the aerosol-forming substrate, such as at least 0.5 wt%, such as at least 1 wt%, such as at least 2 wt %, such as at least 5 wt %, such as at least 10 wt %, such as at least 15 wt %.
  • the dosed flavourant content of the aerosol-forming substrate may have an upper limit of at most 20 wt % of the aerosol-forming substrate, such as at most 15 wt %, such as at most 10 wt %
  • the flavourant concentration is 0.1 to 15 wt %. Even more preferred is a flavourant concentration of 0.1 to 5 wt %. of the aerosol-forming substrate
  • flavourant is menthol.
  • the flavourant is provided in a base liquid.
  • a base liquid for flavourants are polyhydric alcohols.
  • Suitable polyhydric alcohols include propylene glycol (PG), triethylene glycol, 1 ,2-butane diol and vegetable glycerine (VG)) and their esters (e.g. glycerol mono-, di- or tri-acetate).
  • PG propylene glycol
  • VG vegetable glycerine
  • esters e.g. glycerol mono-, di- or tri-acetate.
  • propylene glycol and vegetable glycerine are preferred.
  • the dosed flavourant content contained within the base liquid is within the range 1 to 95 wt % based on the total weight of flavourant and base liquid.
  • flavourant content of 1 to 50 wt %, such as 1 to 25 wt. %, such as 1 to 15 wt % of the total weight flavourant and base liquid.
  • this provides sufficient dilution of flavourant with base liquid to provide safer handling of the flavourant during processing.
  • such a combination allows for good dispersion of flavourant within the base liquid.
  • the aerosol-forming substrate may comprise at least 50 wt% plant material, e.g. at least 60 wt% plant material e.g. around 65 wt% plant material.
  • the aerosol-forming substrate may comprise 80 wt% or less plant material e.g. 75 or 70 wt% or less plant material.
  • the plant material may comprise least one plant material selected from the list including Amaranthus dubius, Arctostaphylos uva-ursi (Bearberry), Argemone mexicana, Arnica, Artemisia vulgaris, Yellow Tees, Galea zacatechichi, Canavalia maritima (Baybean), Cecropia mexicana (Guamura), Oestrum noctumum, Cynoglossum virginianum (wild comfrey), Cytisus scoparius, Damiana, Entada rheedii, Eschscholzia califomica (California Poppy), Fittonia albivenis, Hippobroma longi flora, Humulus japonica (Japanese Hops), Humulus lupulus (Hops), Lactuca virosa (Lettuce Opium), Laggera alata, Leonotis leonurus, Leonurus cardiaca (
  • the plant material is tobacco.
  • Any type of tobacco may be used. This includes, but is not limited to, flue-cured tobacco, burley tobacco, Maryland Tobacco, dark-air cured tobacco, oriental tobacco, dark-fired tobacco, perique tobacco and rustica tobacco. This also includes blends of the above mentioned tobaccos.
  • Any suitable parts of the tobacco plant may be used. This includes leaves, stems, roots, bark, seeds and flowers.
  • the tobacco may comprise one or more of leaf tobacco, stem tobacco, tobacco powder, tobacco dust, tobacco derivatives, expanded tobacco, homogenised tobacco, shredded tobacco, extruded tobacco, cut rag tobacco and/or reconstituted tobacco (e.g. slurry recon or paper recon).
  • the plant material is tobacco.
  • the use of tobacco provides a slurry-type reconstituted plant material having the inherent properties of tobacco, for examples, the texture, aroma, flavour and nicotine content.
  • the plant material is ground to a particle size of less than 120 microns. It is undesirable to have a particle size greater than 150 microns as this is associated with the formation of defects and inhomogeneous areas in the sheet formed by casting the slurry. Particularly, preferred is a particle size of 30 to 120 microns.
  • the method may comprise a step of winding the formed sheet onto a bobbin.
  • the method may further comprise gathering the sheet of homogenised slurry recon tobacco or gathering shreds/strips formed from such a sheet.
  • the sheet used to form the aerosol-forming substrate has a grammage greater than or equal to 100 g/m 2 , e.g. greater than or equal to 1 10 g/m 2 such as greater than or equal to 120 g/m 2 .
  • the sheet may have a grammage of less than or equal to 300 g/m 2 e.g. less than or equal to 250 g/m 2 or less than or equal to 200 g/m 2 .
  • the sheet may have a grammage of between 120 and 190 g/m 2 .
  • the sheet used to form the aerosol-forming substrate has a density of less than 1 100 mg/cm 3 , preferably less than 1000 mg/cm 3 , and more preferably less than 900 mg/cm 3 .
  • the sheet used to form the aerosol-forming substrate has a mass/surface area of less than 0.09 mg/mm 2 , preferably less than 0.085 mg/mm 2 , preferably less than 0.08 mg/mm 2 and more preferably less than 0.075 mg/mm 2 .
  • the aerosol-forming substrate may have a thickness less than about 1 mm, preferably less than about 0.5 mm, preferably between about 0.1 and 0.3 mm, such as about 0.2 mm.
  • the step of casting the slurry to form a sheet may therefore comprise spreading the slurry to form a sheet which, when dried, has a thickness and/or density as set out herein.
  • the aerosol-forming substrate may additionally comprise one or more additives selected from humectants, flavou rants, fillers, aqueous/non-aqueous solvents and binders provided during the formation method, e.g. provided in the slurry.
  • Humectants are provided as vapour generators - the resulting vapour helps carry the volatile active compounds and increases visible vapour.
  • Suitable humectants include polyhydric alcohols (e.g. propylene glycol (PG), triethylene glycol, 1 ,2-butane diol and vegetable glycerine (VG)) and their esters (e.g. glycerol mono-, di- or tri-acetate). They may be present in the aerosol-forming substrate in an amount between 1 and 50 wt%.
  • the humectant content of the aerosol-forming substrate may have a lower limit of at least 1 % by weight of the plant material, such as at least 2 wt %, such as at least 5 wt %, such as at least 10 wt %, such as at least 20 wt %, such as at least 30 wt %, or such as least 40 wt %.
  • the humectant content of the aerosol-forming substrate may have an upper limit of at most 50 % by weight of the plant material, such as at most 40 wt %, such as at most 30 wt %, or such as at most 20 wt %.
  • the humectant content is 1 to 40 wt % of the aerosol-forming substrate, such as 1 to 20 wt %
  • Fillers are known in the art and may act to strengthen the aerosol-forming substrate.
  • Fillers may comprise fibrous (non-tobacco) fillers such as cellulose fibres, lignocellulose fibres (e.g. wood fibres), jute fibres and combinations thereof.
  • the filler content is 5 to 10 wt% of the aerosol-forming substrate e.g. around 6 to 9 wt%.
  • the aerosol-forming substrate may comprise an aqueous and/or non-aqueous solvent.
  • the aerosol forming substrate has a water content of between 5 and 10 wt% e.g. between 6-9 wt% such as between 7-9 wt%.
  • the aerosol-forming substrate may be formed in a substantially cylindrical shape such that the consumable resembles a conventional cigarette. It may have a diameter of between 5 and 10mm e.g. between 6 and 9mm or 6 and 8mm e.g. around 7 mm. It may have an axial length of between 10 and 15mm e.g. between 1 1 and 14mm such as around 12 or 13mm.
  • the aerosol-forming substrate may be circumscribed by a wrapping layer e.g. a paper wrapping layer.
  • the wrapping layer may overlie an inner foil layer or may comprise a paper/foil laminate (with the foil innermost).
  • the consumable may comprise at least one filter element.
  • the upstream filter element may be at least partly (e.g. entirely) circumscribed by the (paper) wrapping layer.
  • the or at least one of the filter element(s) may be comprised of cellulose acetate tow.
  • the or at least one of the filter element(s) may be comprised of activated charcoal.
  • the or at least one of the filter element(s) may be comprised of paper.
  • the or at least one of the filter element(s) may be comprised of plant material e.g. extruded plant material.
  • the or each filter element may be circumscribed with a plug wrap e.g. a paper plug wrap.
  • the or each filter element may have a substantially cylindrical shape with a diameter substantially matching the diameter of the aerosol-forming substrate (with or without its associated wrapping layer).
  • the axial length of the or each filter element may be less than 20mm, e.g. between 8 and 15mm, for example between 9 and 13 mm e.g. between 10 and 12mm.
  • the or at least one of the filter element(s) may be a solid filter element.
  • the or at least one of the filter element(s) may be a hollow bore filter element.
  • the or each hollow bore filter may have a bore diameter of between 1 and 5 mm, e.g. between 2 and 4 mm or between 2 and 3 mm.
  • Any filter element(s) upstream of the terminal filter element may be at least partly (e.g. entirely) circumscribed by the (paper) wrapping layer.
  • the terminal filter element (at the downstream end of the consumable) may be joined to the upstream elements forming the consumable by a circumscribing tipping layer e.g. a tipping paper layer.
  • the tipping paper may have an axial length longer than the axial length of the terminal filter element such that the tipping paper completely circumscribes the terminal filter element plus the wrapping layer surrounding any adjacent upstream element.
  • the or at least one of the filter elements e.g. the terminal filter element may include a capsule e.g. a crushable capsule (crush-ball) containing a liquid flavourant e.g. any of the flavourants listed above.
  • the capsule can be crushed by the user during smoking of the consumable to release the flavourant.
  • the capsule may be located at the axial centre of the terminal filter element.
  • the consumable may comprise an aerosol-cooling element which is adapted to cool the aerosol generated from the aerosol-forming substrate (by heat exchange) before being inhaled by the user.
  • the aerosol-cooling element will be downstream from the aerosol-forming substrate. For example, it may be between the aerosol-forming substrate and a/the filter element and/or between two filter elements.
  • the aerosol cooling element may be at least partly (e.g. completely) circumscribed by the (paper) wrapping layer.
  • the aerosol-cooling element may be formed of a plastics material selected from the group consisting of polylactic acid (PLA), polyvinyl chloride (PVC), polyethylene (PE) and polyethylene terephthalate (PET).
  • the aerosol-cooling element may be formed of a crimped/gathered sheet of material to form a structure having a high surface area with a plurality of longitudinal channels to maximise heat exchange and cooling of the aerosol.
  • the consumable may comprise a spacer element that defines a space or cavity between the aerosolforming substrate and the downstream end of the consumable.
  • the spacer element may comprise a cardboard tube.
  • the spacer element may be at least partly (e.g. entirely) circumscribed by the (paper) wrapping layer.
  • the spacer element may have an external diameter of between 5 and 10mm e.g. between 6 and 9mm or 6 and 8mm e.g. around 7 mm. It may have an axial length of between 10 and 15mm e.g. between 12 and 14 mm or 13 and 14mm e.g. around 14mm.
  • an HNB consumable formed by a method according to the first aspect.
  • a smoking substitute system comprising an HNB consumable according to the second aspect and a device comprising a heating element.
  • the device may be a HNB device i.e. a device adapted to heat but not combust the aerosol-forming substrate.
  • the device may comprise a main body for housing the heating element.
  • the heating element may comprise an elongated e.g. rod, tube-shaped or blade heating element.
  • the heating element may project into or surround a cavity within the main body for receiving the consumable described above.
  • the device e.g. the main body
  • an electrical power supply e.g. a (rechargeable) battery for powering the heating element. It may further comprise a control unit to control the supply of power to the heating element.
  • a control unit to control the supply of power to the heating element.
  • the method comprises inserting the HNB consumable into a cavity within the main body and penetrating the HNB consumable with the heating element upon insertion of the HNB consumable.
  • the heating element may penetrate the aerosol-forming substrate in the HNB consumable.
  • Figure 1 shows a first embodiment of an HNB consumable formed by the present methods
  • Figure 2 shows a second embodiment of an HNB consumable formed by the present methods
  • Figure 3 shows a third embodiment of an HNB consumable formed by the present methods
  • Figure 4 shows the first embodiment within a device forming an HNB system.
  • Figure 5 shows an illustrative diagram of an embodiment of the present methods.
  • the HNB consumable 1 comprises an aerosol-forming substrate 2 at the upstream end of the consumable 1.
  • the aerosol-forming substrate 2 comprises reconstituted tobacco which includes nicotine as a volatile compound and which is dosed with up to 20 wt% of a casing component selected from sugars, cocoa, carbob bean extract, liquorice, and fruit extracts.
  • the aerosol-forming substrate 2 comprises 65 wt% tobacco which is provided in the form of gathered shreds produced from a sheet of slurry tobacco.
  • the tobacco is dosed with 20wt% of a humectant such as propylene glycol (PG) or vegetable glycerine (VG) and has a moisture content of between 7-9 wt%.
  • the aerosol-forming substrate further comprises cellulose pulp filler and guar gum binder.
  • the aerosol-forming substrate 2 is formed in a substantially cylindrical shape such that the consumable resembles a conventional cigarette. It has diameter of around 7mm and an axial length of around 12 mm.
  • the aerosol-forming substrate 2 is circumscribed by a paper wrapping layer 3.
  • the consumable 1 comprises an upstream filter element 4 and a downstream (terminal) filter element 5.
  • Both filter elements 4, 5 are formed of cellulose acetate tow and wrapped with a respective paper plug layer (not shown).
  • Both filter elements have a substantially cylindrical shape.
  • the diameter of the upstream filter element 4 matches the diameter of the aerosol-forming substrate 2.
  • the diameter of the terminal filter element 5 is slightly larger and matches the combined diameter of the aerosol-forming substrate 2 and the wrapping layer 3.
  • the upstream filter element 4 is slightly shorter in axial length than the terminal filter element 5 at an axial length of 10mm compared to 12mm for the terminal filter element 5.
  • the cardboard tube spacer is longer than each of the two filter portions having an axial length of around 14mm.
  • Each filter element 4, 5 is a hollow bore filter element with a hollow, longitudinally extending bore.
  • the diameter of the bore in the upstream filter element 4 is slightly larger than the diameter of the bore in the terminal filter element 5 having a diameter of 3mm compared to 2 mm for the terminal filter element 5.
  • the cardboard tube spacer 6 and the upstream filter portion 4 are circumscribed by the wrapping layer 3.
  • the terminal filter element 5 is joined to the upstream elements forming the consumable by a circumscribing paper tipping layer 7.
  • the tipping layer 7 encircles the terminal filter portion and has an axial length of around 20mm such that it overlays a portion of the cardboard tube spacer 6.
  • FIG 2 shows a second embodiment of a consumable T which is the same as that shown in Figure 1 except that the terminal filter element 5 comprises a crushable capsule 8 (crush-ball) containing a liquid menthol or cherry or vanilla flavourant.
  • the capsule 8 is spherical and has a diameter of 3.5mm. It is positioned within the axial centre of the terminal filter portion 5.
  • Figure 3 shows a third embodiment of a consumable 1” which is the same as the first embodiment except that the wrapping layer 3 does not completely circumscribe the cardboard tube spacer 6 such that there is an annular gap 9 between the tipping layer 7 and the cardboard tube spacer 6 downstream of the end of the wrapping layer 3.
  • Figure 4 shows the first embodiment inserted into an HNB device 10 comprising a rod-shaped heating element (not shown).
  • the heating element projects into a cavity 11 within the main body 12 of the device.
  • the consumable 1 is inserted into the cavity 1 1 of the main body 12 of the device 10 such that the heating rod penetrates the aerosol-forming substrate 2.
  • Heating of the reconstituted tobacco in the aerosol-forming substrate 2 is effected by powering the heating element (e.g. with a rechargeable battery (not shown)).
  • the heating element e.g. with a rechargeable battery (not shown)
  • moisture and volatile compound e.g. nicotine
  • the tobacco and the aerosol former are released as a vapour and entrained within an airflow generated by inhalation by the user at the terminal filter portion 5.
  • the vapour cools within the upstream filer element 4 and the cardboard tube spacer 6, it condenses to form an aerosol containing the volatile compounds for inhalation by the user.
  • Figure 5 shows an illustrative diagram of an embodiment of the manufacturing method. Tobacco is ground to reduce the particle size to less than 120 microns 101
  • the ground tobacco 101 is then combined with a guar gum binder, cellulose pulp filler, propylene glycol and vegetable glycerin to form a mixture 102.
  • the mixture 102 is combined with an aqueous medium to form a slurry 103.
  • Mixing of the mixture 102 with the aqueous medium is carried out in a high shear mixer.
  • the tobacco content of the slurry is approximately 50 to 90 % of the total solids content of the slurry, where the total solids content is 15 to 30 weight % of the slurry.
  • a casing component selected from sugars, cocoa, carbob bean extract, liquorice, and fruit extracts is combined with the slurry 104 and mixed to homogenise.
  • the amount of casing component is selected so as to ultimately provide a casing component content of up to 20 weight % in the dried tobacco sheet.
  • the resultant slurry is cast onto a dryer belt to form a sheet 105.
  • the sheet is dried using a steam drying apparatus to remove excess moisture content from the sheet until the sheet is self-supporting 106.
  • the sheet is wound onto a bobbin 107 for storage.
  • the moisture content of the cast sheet at winding is about 7 to 15 percent of dry weight of the tobacco sheet.
  • the sheet can subsequently be made into a whole or part of an HNB consumable suitable for an HNB device 108. This is achieved by cutting the sheet to an appropriate size.
  • the sheet may be used as whole or part of an HNB consumable for an HNB device 109. In particular, it is a slurry-type reconstituted tobacco product for use in an HNB device.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacture Of Tobacco Products (AREA)

Abstract

La présente invention concerne un procédé de formation d'un consommable de HNB comprenant un substrat de formation d'aérosol de type suspension (par exemple, du tabac) dosé avec un boîtier, et des consommables de HNB formés par ledit procédé.
EP19795175.9A 2018-10-29 2019-10-25 Consommable de substitution à l'acte de fumer Pending EP3873238A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB1817570.3A GB201817570D0 (en) 2018-10-29 2018-10-29 Smoking substitute consumable
PCT/EP2019/079201 WO2020089089A1 (fr) 2018-10-29 2019-10-25 Consommable de substitution à l'acte de fumer

Publications (1)

Publication Number Publication Date
EP3873238A1 true EP3873238A1 (fr) 2021-09-08

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EP19795175.9A Pending EP3873238A1 (fr) 2018-10-29 2019-10-25 Consommable de substitution à l'acte de fumer

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EP (1) EP3873238A1 (fr)
GB (1) GB201817570D0 (fr)
WO (1) WO2020089089A1 (fr)

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Publication number Priority date Publication date Assignee Title
WO2022071563A1 (fr) * 2020-10-02 2022-04-07 日本たばこ産業株式会社 Feuille de tabac
WO2023198756A1 (fr) * 2022-04-12 2023-10-19 Philip Morris Products S.A. Article de génération d'aérosol ayant un élément amont

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB201521626D0 (en) * 2015-12-08 2016-01-20 British American Tobacco Co Tobacco composition
CN105747264B (zh) * 2016-04-20 2020-11-20 贵州中烟工业有限责任公司 一种含活性炭加热不燃烧的烟草基底及其制备方法与应用
JP2020513742A (ja) * 2016-12-30 2020-05-21 フィリップ・モーリス・プロダクツ・ソシエテ・アノニム ニコチン含有シート
WO2018141461A1 (fr) * 2017-01-31 2018-08-09 Philip Morris Products S.A. Procédé de production de matériau de tabac homogénéisé
CN108143003B (zh) * 2017-12-22 2021-01-26 安徽中烟工业有限责任公司 一种适用于加热不燃烧烟草制品的释烟颗粒材料及其制备方法

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GB201817570D0 (en) 2018-12-12

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