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
  • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
  • A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
  • A24B15/10—Chemical features of tobacco products or tobacco substitutes
  • A24B15/16—Chemical features of tobacco products or tobacco substitutes of tobacco substitutes
• • A—HUMAN NECESSITIES
  • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
  • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
  • A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
  • A24B15/18—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
• • A—HUMAN NECESSITIES
  • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
  • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
  • A24B3/00—Preparing tobacco in the factory
  • A24B3/14—Forming reconstituted tobacco products, e.g. wrapper materials, sheets, imitation leaves, rods, cakes; Forms of such products
• • A—HUMAN NECESSITIES
  • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
  • A24C—MACHINES FOR MAKING CIGARS OR CIGARETTES
  • A24C5/00—Making cigarettes; Making tipping materials for, or attaching filters or mouthpieces to, cigars or cigarettes
  • A24C5/14—Machines of the continuous-rod type
  • A24C5/18—Forming the rod
  • A24C5/1821—Forming the rod containing different tobacco mixtures, e.g. composite rods
• • 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
  • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
  • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
  • A24F40/20—Devices using solid inhalable precursors
• • A—HUMAN NECESSITIES
  • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
  • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
  • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
  • A24F40/30—Devices using two or more structurally separated inhalable precursors, e.g. using two liquid precursors in two cartridges

Definitions

• the invention relates to an aerosol generating substrate and an article containing the substrate for a non-combustion heating aerosol generating device.
• Aerosol generating devices such as vaporizers have become popular as a replacement for conventional smoking articles.
• an aerosol is heated for example by means of an electric heater.
• Aerosol generating substrates which are provided as a mousse are disclosed by WO 2018/122 375 A1 and WO 2020/002607 A1 .
• WO 2020 254582 A1 , 2021/083844 A1 , WO 2021/094453 A1 and WO 2021/094365 A1 are related to such mousses and hot pressed tobacco substrates respectively.
• WO 2020/127261 A1 teaches an extrusion for forming a tobacco mousse
• WO 2021 105449 A1 is related to a consumable for an aerosol generating device comprising at least two aerosol generating materials of a different composition, each comprising an amorphous solid formed of a gelling agent.
• WO 2021/128828 A1 and WO 2021/053029 A1 are related to consumables containing a meltable gel.
• WO2020/174026 A1 discloses an inductively heatable aerosol-forming rod for use in an aerosol-generating article, the aerosol-forming rod comprising at least one cylindrical core portion comprising at least one of a first aerosol-forming substrate and a first flavouring material, at least one elongate susceptor laterally abutting the cylindrical core portion in a non-bonded manner along a longitudinal axis of the aerosol forming rod and a sleeve portion arranged around the core portion and the susceptor, wherein the sleeve comprises at least one of a filler material, a second aerosol-forming substrate and a second flavouring material.
• the core portion or the sleeve portion can comprise a porous substrate or foam.
• the aerosol generating substrate for a non-combustion aerosol generating device comprises a first aerosol generating portion and at least one second aerosol generating portion positioned adjacent to the first aerosol generating portion, wherein the first and second aerosol generating portions contain an aerosol generating agent, and respectively first and second flavourant(s) which are different from each other, wherein at least one of the first and second aerosol generating portion is a foam containing non-tobacco flavourant and wherein the foam is configured to produce aerosol upon heating and wherein the foam is not meltable under conditions of aerosol generation at a temperature comprised within a heating temperature range of the aerosol generating device and wherein the heating temperature range is between 180 °C and 350 °C, and wherein the foam comprises a foam-forming agent selected from the group consisting of agar, gellan gum, lecithin, polyglycerol esters of fatty acids, glycerol esters of fatty acids, sorbitan esters of fatty acids, and/or mixtures
• Providing the aerosol generating substrate in the form of a foam provides the significant advantage that leakage can be prevented, as the foam is significantly more stable than a liquid and does not leak as easily as a liquid may.
• this can be achieved by providing the foam stable and not meltable at a temperature comprised within the heating temperature range of the aerosol generating device, such that the foam resists up to the temperature of at least one value in the heating temperature range.
• the amount of foam can be adjusted in a manner which corresponds to the session time, which users are used to, i.e. to the session time of a regular cigarette.
• any desirable ingredients of the aerosol such as the flavourant(s) can easily be provided in a foam.
• the flavour as a whole can be intensified and/or diversified.
• the aerosol generating portions in particular the foam, can be provided in a manner to release significant parts of the flavour during specific, preferably different or at least staggered times, so that a varying predominant flavour over time can be experienced.
• the total time of flavour release can be prolonged, and flavour consistency along vaping is achieved.
• flavours can be kept separate in different aerosol generating portions and do not have to be mixed which may deteriorate the users' experience regarding different flavours.
• flavour quality and intensity can be kept at a high level over a longer period of time than previously.
• the heating temperature range of the aerosol generating device this can for example be 200-320°C, and preferably 230-320°C.
• the aerosol can be reliably produced, and melting of the foam can at the same time be avoided.
• the foam may experience charring and browning but no change of shape that usually results when melting.
• the aerosol generating substrate can have tobacco material in particular homogenized tobacco material, but the aerosol generating substrate can also be free of tobacco material and/or contain a non-tobacco flavouring agent.
• Tobacco material differs from that contained in a normal cigarette as it generally contains reconstituted tobacco or processed tobacco mixture rather than leaf tobacco, although it may contain a low amount of leaf.
• the amount of nicotine can also be varied which allows the users to control their nicotine uptake.
• a source of nicotine means any substance capable of releasing nicotine when heated. Such a substance does not necessarily have to be tobacco, but the nicotine can be extracted from tobacco and dosed in the foam.
• the amount of nicotine in dry basis of the aerosol generating substrate is preferably between 0.1 and 10 wt. %, and preferably between 0.1 and 4 wt. %.
• Production of the aerosol generating substrate, which can be circular cylindrical and can be called a plug, can be particularly efficient by providing the first and at least one second aerosol generating portions as co-extrudates and/or concentrically.
• At least one aerosol generating portion preferably comprises a foam forming agent and/or a foam stabilizing agent.
• Preferred foam forming agents are selected from the group consisting of agar, gellan gum, lecithin, polyglycerol esters of fatty acids, glycerol esters of fatty acids, sorbitan esters of fatty acids, and/or mixtures thereof, without being limited thereto.
• the amount of foam forming agent is preferably comprised between 1 and 15 wt.% of the foam, more preferably between 2 and 10 wt. %, most preferably between 3 and 8 wt. % of the foam.
• Preferred foam stabilizing agents are selected from the group consisting of cellulose gum, hydroxyalkylated carbohydrates, derivatives thereof, and mixture thereof and/or comprise cellulose gum, in particular carboxymethylcellulose (CMC) or derivatives thereof (also referred as "binder” in the present application) and/or cellulose fiber.
• CMC carboxymethylcellulose
• Derivatives of CMC may be salt thereof, preferably alkali metal salts such as sodium and/or potassium salts.
• Cellulose fibre as the foam stabilizing agent is preferably present in an amount between 5 wt. % and 15 wt. % of the foam.
• the amount of foam stabilizing agent is preferably comprised between 5 and 30 wt. % of the foam, preferably between 8 and 28 wt. %.
• the foam stabilizing agent comprises a ratio of about 1:1 of cellulose fibre and carboxymethylcellulose in the foam.
• the foam stabilizing agent comprises only carboxymethylcellulose and no cellulose fibre in the foam.
• an amount of at least 40 wt. %, preferably at least 50 wt. %, most preferably at least 60 wt. %, of at least one aerosol generating portion as well as propylene glycol, glycerin or a combination thereof have proven beneficial with regard to the aerosol forming agent.
• the foam may comprise water in an amount of 0-15 wt.% of the weight of the foam, e.g., 9-10 wt. %.
• the first aerosol generating portion preferably contains tobacco powder. More preferably, the first aerosol generating portion is a processed tobacco mixture. The amount of tobacco powder is preferably of at least 50 wt.% of the first aerosol generating portion. In an example, the first aerosol generating portion is a tobacco foam. An advantage of the tobacco foam is that it can easily be extruded or co-extruded with the second aerosol generating portion which is also a foam or foam.
• Preferred (non-tobacco) flavouring agents foam are selected amongst the list of: menthol, natural and/or artificial plant flavour (e.g., peppermint, berry, fruit, root or nut), animal, enzymatic or microbiological origin flavour, sweet-like, alcoholic or dessert-like flavour (e.g. chocolate, cookie dough, peanut butter, carrot cake, marshmallow, butter popcorn, prosecco, red wine, rum, jelly bean, Guinness, bourbon, honey, toffee, praline, butterfinger, brown bread etc.) and combinations thereof.
• the amount of flavouring agent it is currently preferred to have this with 0.2 to 18 and preferably 0.6 to 13 wt. %.
• the non-tobacco aerosol generation portion comprises:
• the aerosol generation portion comprises:
• the gum is more preferably gellan gum and/or the binder is preferably carboxymethylcellulose and derivatives.
• cellulose fiber is particularly advantageous to maintain the integrity of the shape during heating, as it does not "melt”-although it is a biopolymer - but merely undergoes decomposition, meaning charring (formation of double bond C-C) and degradation, but only at relatively high temperatures.
• the first aerosol generating portion or tobacco portion may comprise homogenized tobacco material being formed of a processed tobacco mixture.
• the mixture may comprise tobacco powder, aerosol forming agent (e.g., glycerol), binder (e.g., guar gum) and optionally cellulose pulp.
• aerosol forming agent e.g., glycerol
• binder e.g., guar gum
• optionally cellulose pulp e.g., guar gum
• the tobacco mixture comprises 50 wt.%- 80 wt. % tobacco powder, 8 wt.%-15 wt.% aerosol forming agent, 1 wt.%-10 wt.% binder, 0% wt.-10 %wt. cellulose pulp.
• flavour release from the first and at least one second aerosol generating portion is preferably adapted to be staggered time-wise.
• This adaptation is promoted by an adjacent arrangement of the first and second aerosol generating portions in particular wherein the portions are arranged, e.g. in successive adjacent layers, in a transverse direction of the article and/or air flow.
• a coaxial arrangement of the first and second aerosol generating portions, such as by superimposed tubular layers, is found particularly advantageous to a staggered flavour release.
• the aerosol generating article described herein contains the above-described substrate wrapped in a wrapper.
• the article can further comprise a mouthpiece downstream of the aerosol generating substrate, which can also be contained in the wrapper.
• the mouthpiece can comprise a filter and a spacing and/or cooling element provided between the aerosol generating substrate and the filter.
• the wrapper can for example be made from a cigarette paper and can be metallized or not. In either case, it can be designed to avoid scorching of the foam, which can also be called an e-mousse as it is a foam used with an electronic cigarette.
• the filter provided in the mouthpiece this can be adapted to provide a relatively low, in any case, acceptable pressure drop, so that flavouring intensity and nicotine yield remain optimal.
• the presence of the spacing and/or cooling element will, firstly, cool the generated aerosol, so that aerosol having an uncomfortably high temperature is prevented from entering the user's mouth.
• the spacing element the article according to the present invention can be provided with a size adapted to well-established aerosol generating devices, with which the article can be used. Due to the fact that the article described herein can be used with present aerosol generating devices, the users have the advantage that a single device is sufficient and only one device has to be maintained.
• the spacing and/or cooling element is a hollow paper tube, this contributes to compostability of the article as a whole. This also applies to the preferred measure of providing the article with a paper filter.
• the length of the spacing and/or cooling element 10 to 25 and preferably 18 to 22 mm are currently preferred.
• the aerosol generating substrate can have any appropriate extension, it will keep the article described herein compact, when the aerosol generating substrate extends from the upstream end towards the downstream end of the article.
• a preferred total length of the article is also between 50 mm and 70 mm, more preferably between 55 mm and 65 mm, even more preferably 58 mm to 62 mm; wherein the aerosol generating substrate or plug is preferably about 15 mm to 25 mm and the filter is preferably about 15 mm to 25 mm.
• a cylinder or slab are preferred as they are easy to manufacture.
• one or more hollow tubes can be provided in the aerosol generating substrate.
• the two aerosol generating portions can be provided as two superimposed layers of aerosol generating material surrounding a central hollow tube.
• a hollow tube leads to the advantage that the heat flow through the hollow can extract more flavour and nicotine as compared to heat flowing through a cylindrical rod, in which the foam or mousse is essentially a single semi-solid element.
• the effect of allowing more flavour and nicotine to be extracted from the foam is further enhanced by a plurality of longitudinal through-passages, channels or holes essentially extending through the entire substrate, which can also be called a plug.
• the aerosol generating substrate in the form of plural discrete pieces, such as beads or small elements, into which the foam or mousse is fragmented.
• These elements can have essentially the same or different shapes and/or sizes.
• the elements may have a size of one or two millimetres.
• the filter may be a paper filter or a filament tow filter.
• a paper filter may be a wrapped gathered sheet of paper.
• the filter has a pressure drop preferably less than 5, more preferably less than 3 and most preferred equal to or less than 2.5 mm H2O/mm are advantageous. The highest of these values allows an acetate filter to be used, and a paper filter can achieve the lower values.
• the pressure drop is determined under standard conditions defined by Coresta Recommended Method No. 41 (2007) and Coresta Guide No. 4 (2019).
• paper sheet of the paper filter with a basis weight of 20 to 40 g/m 2 has proven beneficial.
• a filament tow filter such as a cellulose acetate filter, which can be used alternatively or in addition to a paper filter
• the filament tow has a denier per filament above 6, preferably at most 8 or less and a total denier below 40,000, preferably equal to 30,000 or less is preferred in order to provide the filter with an acceptably low pressure drop.
• the filter may possibly contain a breakable capsule containing flavouring agent (e.g., fragrance, aromas dispersed in a lipophilic solvent) for release of flavour on demand such as described in EP1906775 .
• flavouring agent e.g., fragrance, aromas dispersed in a lipophilic solvent
• the invention further provides a method for producing the aerosol generating device described herein wherein at least two aerosol generating portions are coextruded, wherein preferably at least one second aerosol generating portion is a flavoured foam, preferably tobacco free, and the first aerosol generating portion comprises tobacco material, preferably is a processed tobacco mixture, most preferably a tobacco foam.
• any features mentioned above or below with regard to the aerosol generating substrate, article, method for producing the substrate and/or methods for releasing aerosol only, are equally applicable to the other subject matter of the present disclosure.
• the article 10 described herein is typically circle cylindrical and essentially has three sections, which can have approximately the same length each: A foam or mousse section 12, which can also be called a plug, a paper tube 14 constituting a spacing and/or cooling element and a filter 16 located at the mouth end of the article, through which vapor including flavour is released to the user during vaping.
• the sections are essentially attached by a paper wrapper, including in particular a tipping paper.
• a ventilation zone (not shown) may be provided such as by at least one row of ventilation holes through the wrapper, filter and/or paper tube.
• the foam has open cell structure (i.e., cells communicating with each other to form a porous 3D network).
• the plug 12 is surrounded by a heating element 18, which can for example be a heater tube.
• a heating element 18 can for example be a heater tube.
• the heat flow will extract flavours and optionally nicotine from the plug, firstly from a first aerosol generating portion 28 and deliver it to the user.
• a second aerosol generating portion 20 which is preferably at the center of the plug 12 as shown in figure 3 for plural second aerosol generating portions and can have, when a single second aerosol generating portion is present, a diameter approximately one third of the plug's diameter.
• These one or more second aerosol generating portions 20 do not necessarily have to extend fully aligned with the axial or longitudinal direction of the plug typically having a cylindrical shape. Rather, they can extend at an angle to the longitudinal direction and can comprise one or more curves or bends along their extension.
• a hollow tube e.g., paper tube, may further be inserted in the plug to form a central air flow path and the two or more aerosol generating portions are overlaid on the tube (not shown).
• each aerosol generating portion provides a relatively sustained release with a peak and a decrease. The decrease is advantageously compensated by a peak of a second aerosol generating portion.
• Figure 3 shows an example of a plug 12 having plural aerosol generating portions which are essentially provided concentrically. It should be noted that the centre of the plug can remain hollow and for this can be occupied, e.g., by a hollow paper tube.
• An aerosol generation substrate was prepared by co-extrusion of a e-mousse in a tobacco blend (tobacco foam) using the co-extruder represented in figure 4 .
• the e-mousse is prepared by mixing the ingredients in a blender before forcing it in the extruder (via a second extruder or piston) before the co-extruding nozzle.

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• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• General Chemical & Material Sciences (AREA)
• Health & Medical Sciences (AREA)
• General Health & Medical Sciences (AREA)
• Toxicology (AREA)
• Manufacture Of Tobacco Products (AREA)
• Cigarettes, Filters, And Manufacturing Of Filters (AREA)

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• 2023
  • 2023-01-16 WO PCT/EP2023/050837 patent/WO2023135285A1/en not_active Ceased
  • 2023-01-16 US US18/728,599 patent/US20250082012A1/en active Pending
  • 2023-01-16 EP EP23701001.2A patent/EP4463017B1/en active Active
  • 2023-01-16 CN CN202380016457.9A patent/CN118591304A/zh active Pending
  • 2023-01-16 KR KR1020247021216A patent/KR20240129174A/ko active Pending
  • 2023-01-16 JP JP2024526961A patent/JP2025500119A/ja active Pending

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