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
  • A24B15/10—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
  • A24B15/10—Chemical features of tobacco products or tobacco substitutes
  • A24B15/16—Chemical features of tobacco products or tobacco substitutes of tobacco substitutes
  • A24B15/167—Chemical features of tobacco products or tobacco substitutes of tobacco substitutes in liquid or vaporisable form, e.g. liquid compositions for electronic cigarettes
• • 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
  • A24B15/24—Treatment of tobacco products or tobacco substitutes by extraction; Tobacco extracts
  • A24B15/241—Extraction of specific substances
  • A24B15/243—Nicotine
• • 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
  • 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
  • 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
  • A24B15/32—Treatment of tobacco products or tobacco substitutes by chemical substances by organic substances by acyclic compounds
• • 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
  • 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
  • A24C5/1885—Forming the rod for cigarettes with an axial air duct
• • 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
  • A24D3/00—Tobacco smoke filters, e.g. filter tips or filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces of cigars or cigarettes
  • A24D3/06—Use of materials for tobacco smoke filters
  • A24D3/08—Use of materials for tobacco smoke filters of organic materials as carrier or major constituent
  • A24D3/10—Use of materials for tobacco smoke filters of organic materials as carrier or major constituent of cellulose or cellulose derivatives
• • 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
  • A24D3/00—Tobacco smoke filters, e.g. filter tips or filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces of cigars or cigarettes
  • A24D3/17—Filters 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

Definitions

• the invention relates to an aerosol generating article 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.
• leakage of the aerosol generating substrate, such as a liquid, is to be prevented as far as possible.
• WO 2020 254582 Al, 2021/083844 Al, WO 2021/094453 Al and WO 2021/094365 Al are related to such mousses and hot pressed tobacco substrates respectively.
• WO 2020/127261 Al teaches an extrusion for forming a tobacco mousse
• WO 2021 105449 Al 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.
• the article comprises an aerosol generating substrate and a mouthpiece downstream of the aerosol generating substrate, which is contained in a wrapper and is in the form of a foam comprising an aerosol forming agent, a source of nicotine and a nontobacco flavouring agent.
• the mouthpiece comprises a filter and a spacing and/or cooling element is provided between the aerosol generating substrate and the filter, wherein the aerosol generating substrate comprises between 0.1 and 10 wt. % nicotine in dry basis of the aerosol generating substrate.
• 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 mousse used with an electronic cigarette.
• 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. Moreover, 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 volatiles of the aerosol such as nicotine and/or flavouring can easily be provided in a foam and can be released to a controllable concentration and/or intensity.
• 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 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 aerosol generating article can still have tobacco material making it somewhat more similar to a normal cigarette, it is currently preferred to provide the aerosol generating substrate free of tobacco material.
• the aerosol generating substrate preferably comprises a foam forming agent and/or a foam stabilizing agent.
• the amount of nicotine in dry basis of the aerosol generating substrate is preferably between 0.1 and 4 wt. %
• an amount of at least 30 wt. %, preferably at least 40 wt. % and most preferred at least 50 wt. % of the aerosol generating substrate have proven beneficial with regard to the aerosol forming agent.
• an amount of 60 to 70 wt. % is currently preferred.
• Preferred aerosol forming agents are selected from a group comprising: glycerol, glycol derivatives, sebacate esters, and/or mixtures thereof, without being limited thereto.
• the aerosol forming agent is a combination of glycerol and propylene glycol, preferably in a ratio of 10%:90% to 90%:10%, more preferably 40%:60% to 60%:40%, most preferably 50%:50%.
• the foam may comprise water in an amount of 0-15 wt.% of the weight of the foam, e.g., 9-10 wt. %.
• 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.
• Cellulose fibre as the foam stabilizing agent is preferably present in an amount between 5 wt. % and 15 wt. % of the foam.
• Derivatives of CMC may be with salts, preferably alkali metal salts such as sodium and/or potassium salts.
• the amount of foam stabilizing agent is preferably comprised between 10 and 30 wt. % of the foam, preferably between 12 and 28 wt.
• the foam stabilizing agent comprises a ratio of between 1:0 and 1:2, more preferably 1:0 to 1:1.1 of cellulose gum (more preferably CMC) to cellulose fibre in the foam.
• Preferred non-tobacco flavouring agent 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.
• amount of flavouring agent it is currently preferred to have this with 0.2 to 18 wt. % and preferably 0.6 to 13 wt. % of the foam.
• a hollow tube comprising at least one outlet for air to communicate from outside to the inside of the hollow tube, a cylindrical rod, a cylindrical rod comprising a plurality of longitudinal through-passages or channels, a group of discrete pieces such as beads, in which a cylindrical rod is easiest to manufacture, and 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 semisolid 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.
• This effect can also be achieved by providing 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 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, 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 is preferably about 15 mm to 25 mm and the filter is preferably about 15 mm to 25 mm.
• the filter may be a paper filter or a filament tow filter.
• a paper filter may be a wrapped gathered sheet of paper.
• a filament tow filter may be a cellulose acetate filter.
• 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 H20/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 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 cellulose acetate filter
• the fiber 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.
• the article described herein will preferably be used together with an aerosol generating system comprising an aerosol generating device for insertion of the article and heating the aerosol generating substrate.
• the device will typically comprise a chamber for receiving at least the aerosol generating substrate at a heater configured for heating the substrate in the chamber and for generating aerosol from the substrate passing through the filter when air is drawn through the substrate.
• the heater can for example be an external tube heater and/or a combination of an induction coil outside the article and susceptors within the article adapted to be heated by the induction coil.
• Fig. 1 shows a perspective view of a first embodiment of the article
• FIG. 2-4 show further embodiments
• Fig. 5 is a diagram illustrating flavour release over time. Detailed Description of Preferred Embodiments
• 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.
• 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 plug 12 is surrounded by a heating element 18, which can for example be a heater tube.
• the foam has open cell structure (i.e., cells communicating with each other to form a porous 3D network).
• open cell structure i.e., cells communicating with each other to form a porous 3D network.
• the through hole 20 which can essentially be at the center of the plug 12 as shown in figure 2 and can have diameter approximately one third of the plug's diameter.
• the extraction of flavour and nicotine is further enhanced by plural through holes as indicated in figure 3. These will typically have a smaller diameter than the through hole of the embodiment of figure 2.
• the heat flow is increased, and more flavour and nicotine can be extracted.
• plural through holes can be present throughout the plug in addition to those indicated in figure 3. As a result of the higher surface of contact of the multiple through holes with the foam, the heat flow capable of transporting volatiles is further increased.
• these through holes as well as the center hole 20 shown in figure 2 do not necessarily have to extend fully aligned with the axial or longitudinal direction of the plug typically having a cylindrical shape. Rather, the through holes can extend at an angle to the longitudinal direction and can comprise one or more curves or bends along their extension.
• the foam or mousse is fragmented into small elements which can have the same or different shapes and sizes.
• the small elements may be formed as beads, e.g., of a size of one or two millimetres. In any case, plural voids will be present between the elements and enable the heat flow to pass through and extract flavour and nicotine.
• flavour and nicotine release shown in figure 5 in which flavour and nicotine is released relatively intensively within a short amount of time and is still at a high and relatively constant level after reaching a certain peak. This corresponds well to the experience of regular cigarette smoking, so that users will consider it beneficial and pleasant.
• the e-mousse can be flavoured using different flavouring agents in various amounts.
• the specific e-liquid was PG/VG in a 1:1 ratio and contained flavouring agents and/or nicotine.
• the amount of flavouring agent can be between 0.5% and 14 wt. %, preferably 3 wt. % and 14 wt. % relative to the weight of the e-mousse.
• the e-mousse may also contain nicotine in an amount between 0.45 wt.% and 3.4 wt. %, most preferably 1.14 wt. %.

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• Chemical & Material Sciences (AREA)
• General Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Health & Medical Sciences (AREA)
• General Health & Medical Sciences (AREA)
• Toxicology (AREA)
• Materials Engineering (AREA)
• Engineering & Computer Science (AREA)
• Life Sciences & Earth Sciences (AREA)
• Agronomy & Crop Science (AREA)
• Botany (AREA)
• Cigarettes, Filters, And Manufacturing Of Filters (AREA)
• Manufacture Of Tobacco Products (AREA)

Applications Claiming Priority (2)

Publications (1)

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ID=79730310

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• 2023
  • 2023-01-16 JP JP2024526960A patent/JP2025501853A/ja active Pending
  • 2023-01-16 US US18/727,928 patent/US20250072482A1/en active Pending
  • 2023-01-16 KR KR1020247020308A patent/KR20240129162A/ko active Pending
  • 2023-01-16 WO PCT/EP2023/050836 patent/WO2023135284A1/en not_active Ceased
  • 2023-01-16 EP EP23701000.4A patent/EP4463018A1/en active Pending

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