WO2024100273A1 - An aerosol-generating article an method for manufacturing an aerosol-generating article - Google Patents

An aerosol-generating article an method for manufacturing an aerosol-generating article Download PDF

Info

Publication number
WO2024100273A1
WO2024100273A1 PCT/EP2023/081480 EP2023081480W WO2024100273A1 WO 2024100273 A1 WO2024100273 A1 WO 2024100273A1 EP 2023081480 W EP2023081480 W EP 2023081480W WO 2024100273 A1 WO2024100273 A1 WO 2024100273A1
Authority
WO
WIPO (PCT)
Prior art keywords
aerosol generating
wrapper
spacing subassembly
mouth piece
gap
Prior art date
Application number
PCT/EP2023/081480
Other languages
French (fr)
Inventor
Ryota AIZAWA
Original Assignee
Jt International Sa
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 Jt International Sa filed Critical Jt International Sa
Publication of WO2024100273A1 publication Critical patent/WO2024100273A1/en

Links

Classifications

    • 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
    • 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
    • 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
    • A24D1/02—Cigars; Cigarettes with special covers
    • 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
    • A24D1/04—Cigars; Cigarettes with mouthpieces or filter-tips

Definitions

  • the present invention is directed to an aerosol generating article with improved optical properties. Furthermore, the invention is directed to a method for manufacturing an aerosol generating article.
  • Smoking articles such as cigarettes are consumer goods produced in large quantities. They usually comprise a tobacco rod formed by wrapping tobacco cut filler with a paper-based wrapper in a longitudinally extending substantially cylindrical rod. Beyond their primary tobacco wrapping function, paper based smoking article wrappers also often form a communication support for manufacturers and may comprise various printed designs, colours and/or markings (watermarks, embossing, etc%), which may form part of branding features allowing consumers to recognize products among others. Thus, it is highly appreciated to provide an appealing appearance of the cigarette paper. Contaminations of the visible paper surface should be avoided to provide premium appearance of the cigarettes and/or the cigarette paper.
  • smoking article and “cigarette” are used synonymously.
  • a flavour source is not burnt but heated to generate an aerosol, which can be consumed by a user.
  • the substrate from which the aerosol is generated often comprises tobacco.
  • the substrate is often provided in form of an exchangeable cartridge to be inserted in an aerosol generating device. Similar to conventional smoking articles as cigarettes, in these cartridges, the tobacco is often hold in place by a cigarette paper I wrapper.
  • Some embodiments of the invention are only described for a cigarette or a cigarette paper. However, these embodiments should be considered to be applicable and disclosed also for any other aerosol generating article and/or aerosol generating article wrapper. Therefore, in the present application, the
  • ISA/EP terms “aerosol generating article” refers to a smoking article (or cigarette including cigarillo) and to a heat-not-burn aerosol generating article.
  • Smoking articles comprise non-tobacco material, e.g., filter, containing liquids.
  • Some liquids comprise a flavouring agent such as menthol or additives such as plasticizer, humectant, phenol reducing agent, taste smoothening agent, water, etc. These liquids may be used in various combinations and ratios in the non-tobacco material.
  • a disadvantage of liquids in the filter segment is, that even with the best application possible, due to the standard deviation of raw materials and production process, residual liquids move from the filter to an adjacent tobacco portion and migrate to the wrapper of the tobacco portion thereby causing inaesthetic stain of the tobacco wrapper. Furthermore, liquids may further extract some tobacco pigments to the wrapper thus increasing the staining issue.
  • a further object of the invention is to provide a method for manufacturing the aerosol generating article of the invention.
  • An aerosol-generating article comprises a mouth piece and/or spacing subassembly and an aerosol generating rod combined together with an outer wrapper (or “tipping paper”).
  • the aerosol generating article extends along a longitudinal direction and the mouth piece and/or spacing subassembly is arranged along a flow direction of the aerosol downstream the aerosol generating rod.
  • the mouth piece and/or spacing subassembly comprises a mouth piece and/or spacing subassembly wrapper for wrapping the mouth piece and/or spacing subassembly at least partially.
  • the aerosol generating rod comprises an aerosol generating substrate and a substrate wrapper for wrapping the aerosol generating substrate at least partially.
  • the mouth piece and/or spacing subassembly wrapper and the substrate wrapper are distant one another along the longitudinal direction to form a gap at least equal to 0.05 mm and at most equal to 2 mm between the mouth piece and/or spacing subassembly wrapper and the substrate wrapper.
  • the outer wrapper overlaps with the gap.
  • the gap is preferably not visible for a user. Thanks to the presence of the gap, the substrate wrapper is protected from liquid migration and staining even if the aerosol-generating article is stored over a long period of time.
  • an aerosol-generating article may be any consumable article comprising a charge of solid or semi-solid aerosol-generating material comprising tobacco material.
  • the tobacco material is preferably selected from a group comprising tobacco leaf, a part of tobacco leaf, a part of tobacco plant, a tobacco derivative, tobacco fine particles, grinded tobacco, and combinations thereof. This allows extracts of the tobacco material to be included in the aerosol.
  • the aerosol-generating material may further comprise an aerosol forming agent selected from the group of: a polyhydric alcohol such as glycerin, a diol such as polypropylene glycol, triethylene glycol, or 1-3-butanediol, an ester of polyhydric alcohol such as glycerol monoacetate, glycerol diacetate or glycerol triacetate, triethyl citrate or triacetin or combinations thereof.
  • a polyhydric alcohol such as glycerin, a diol such as polypropylene glycol, triethylene glycol, or 1-3-butanediol
  • an ester of polyhydric alcohol such as glycerol monoacetate, glycerol diacetate or glycerol triacetate, triethyl citrate or triacetin or combinations thereof.
  • the aerosol-generating material may comprise a tobacco component comprising tobacco material.
  • the tobacco component may be selected from the group consisting of: extruded tobacco, band cast tobacco, tobacco paper, laminated tobacco, leaf tobacco, tobacco foam and combinations thereof.
  • the tobacco component may comprise non-tobacco ingredients in particular aerosol forming agent, binding agent, filler, flavour, cooling agent and combinations thereof.
  • the aerosol could be generated by combustion or applying heat from an external source to the aerosol-generating substrate.
  • Heat can be generated by an external heat source, more preferably by ohmic heating, induction heating, microwave heating, infrared heating or charcoal.
  • the heating may be provided by conduction, radiation and/or induction.
  • the heating device may comprise heating elements outside the aerosol-generating substrate or embedded in the substrate (e.g., heat resistive blade or pin or induction susceptor). The heat generated by the heat source is transferred to the aerosol-generating substrate, which then
  • RECTIFIED SHEET (RULE 91) ISA/EP releases an aerosol.
  • the energy to the electrical heating device is preferably supplied by a rechargeable or replaceable battery.
  • the gap between the wrapper of the mouth piece and/or the spacing subassembly and the substrate wrapper is of at least 0.1 mm. It had been shown that a gap of this width could prevent transfer of liquids to the substrate wrapper.
  • the gap between the mouth piece and/or cooling subassembly wrapper and the substrate wrapper is in a range of 0.1 to 1 mm, preferably in a range of 0.2 to 0.6 mm, most preferably in a range of 0.2 to 0.5 mm.
  • a gap of this width not only avoid transfer of liquid but is also small enough to be bridged by the outer wrapper without detriment to the strength and stability of the aerosol generating article.
  • easy handling of the aerosol generating article is possible with a reduced risk of breaking the aerosol generating article between the mouth piece and/or spacing subassembly wrapper and the substrate wrapper.
  • the aerosol-generating article remains stiff enough to be inserted in and removed from the heating chamber of an aerosol generating device without breaking or cracking.
  • the gap is preferably the same gap as between the mouth piece and/or spacing subassembly wrapper and the aerosol generating substrate wrapper.
  • the mouth piece and/or spacing subassembly comprises a liquid substance or additive.
  • Liquids can be used to change the taste or properties of the aerosol. For example, some liquids can give the aerosol a smoother taste.
  • a liquid selected from a group comprising an alcohol, a fatty acid, a fatty acid ester, a polyether polymer, an essential oil and combinations thereof.
  • a liquid is selected from a group comprising polypropylene glycol (PPG), polypropylene glycol glyceryl ether, polybutylene glycol, diglycerin, sorbitan fatty acid ester, glycerin fatty acid ester, polyglycerin fatty acid ester, propylene glycol fatty acid ester, polyethylene glycol, caprylyl glycol and combinations thereof. At least some of these substances are suitable to reduce the amount of phenols from the aerosol, which results in a smoother taste for the user.
  • the aerosol generating substrate comprises soluble matter.
  • This soluble matter is preferably soluble in the liquid substance or additive mentioned above.
  • the soluble matter dissolves and diffuses at least through parts of the aerosol generating article and/or the aerosol generating substrate.
  • a gap as described above effectively prevents contact of soluble matter located in the aerosol generating substrate with a liquid located in the mouth piece and/or spacing subassembly.
  • the aerosol generating article more preferably the mouth piece, most preferably the filter segment, comprises the liquid in an amount of 2 - 100 mg, preferably 5 - 50 mg, more preferably 8 - 35 mg, most preferably 10 - 20 mg. It has been found that with these amounts of liquid, staining could be prevented effectively. Experiments showed that with 13 mg polypropylene glycol no staining occurred. With 25 mg of polypropylene glycol staining was reduced by 80 % with respect to staining of an aerosol generating article without the gap.
  • the mouth piece and/or spacing subassembly comprises a filter segment. It has been found that a filter can hold back solid matter. Thus, the taste of the aerosol could be improved.
  • the filter segment comprises a filtering material comprising paper or other natural cellulose fibre.
  • a filtering material comprising paper or other natural cellulose fibre.
  • these materials have been found to be advantageous, since they provide excellent filtering properties. Additionally, they are recyclable and/or biodegradable.
  • the filtering material is selected from a group comprising hemp, flax, abaca, sisal, cotton, regenerated cellulose and combinations thereof. These materials are available in large quantities and are especially suitable for filtering undesired components from the aerosol.
  • the liquid substance or additive may be mixed or coated with the filtering material. As aforementioned, the liquid is preferably contained in the filtering material in an amount of 2 - 100 mg, preferably 5 - 50 mg, more preferably 8 - 35 mg, most preferably 10 - 20 mg.
  • the liquid may be polypropylene glycol (PPG), polypropylene glycol glyceryl ether, polybutylene glycol, diglycerin, sorbitan fatty acid ester, glycerin fatty acid ester, polyglycerin fatty acid ester, propylene glycol fatty acid ester, polyethylene glycol, caprylyl glycol and combinations thereof.
  • PPG polypropylene glycol
  • the liquid may improve taste and/or reduce phenols.
  • the amount of PPG may be e.g. between 10 - 30 mg, more preferably 3 - 25 mg.
  • the mouth piece and/or spacing subassembly wrapper and/or the substrate wrapper comprises a liquid-proof, hydrophobic or oleophobic coating.
  • a coating By such a coating, the transfer of a liquid through the mouth piece and/or spacing subassembly wrapper can be omitted or at least noticeably reduced.
  • the coating is selected dependent from the liquid. Since hydrophobic coatings usually prevent entering of polar liquids like water and short chain alcohols very effectively, these coatings are preferred, if polar liquids are present. In contrast thereto, oleophobic coatings are less effective against polar compounds but effective against nonpolar liquids.
  • the oleophobic coating preferably comprises a very polar compound, which is adhered or bound to the surface of the wrapper.
  • the surface tension of such a compound is greater than that of oil and/or water.
  • the oleophobic coating comprises a fluorocarbon, preferably PFAS (Fluorin).
  • PFAS Fluorin
  • the oleophobic coating comprises a fluoropolymer-based solid.
  • the coating comprises a perfluoropolyether.
  • the liquid may not be able to enter the outer wrapper which overlaps with the gap. Accordingly, Liquid cannot traverse the gap. However, it has been found that even without such a coating, the staining caused by transfer of the liquid can be prevented due to the gap. Thus, usage of a wrapper without coating is also possible.
  • a coating as described above has been found to be advantageous for some liquids, or very small gap dimensions or wrapper materials providing good liquid-transfer properties (e.g., porous paper).
  • the mouth and/or spacing subassembly comprises at least one tubular member.
  • This tubular member preferably comprises a hollow paper tube or fibre tube. Additionally and/or alternatively, the tubular member is preferably positioned upstream of a filter segment. Such a tubular member provides a very good surface to volume ratio. Thus, handling of the tubular member is facilitated.
  • the tubular member is preferably positioned adjacent the aerosol generating rod by the same gap as the wrappers.
  • the gap isn’t only separating the substrate wrapper with respect to the mouth piece and/or spacing subassembly wrapper but also the individual components of these building blocks.
  • the outer wrapper preferably bridges these gaps.
  • the tubular member is only an example of an advantageous embodiment.
  • the tubular member is a filter segment adjacent the aerosol generating rod (but separated by the gap).
  • the gap is between the aerosol generating rod and the filter segment.
  • the aerosol generating article as described herein is a heat-not-burn article.
  • the aerosol generating article is designed for being heated in an electrically aerosol generating device. Therefore, the aerosol generating article preferably allows insertion of a heating blade, and/or heat transfer from a heating cavity (“oven”) through at least parts of an outer surface of the aerosol generating article inserted in the cavity, and/or induction heating via susceptor(s) inserted in the aerosol generating material or combinations of these heating means.
  • the aerosol generating rod is located or suitable to be located in an oven of an electrically aerosol generating device.
  • the present invention is also applicable to combustible cigarettes.
  • the aerosol-generating article may comprise a flavoring agent.
  • a flavoring agent can preferably alter the sensory or organoleptic character or nature of the mainstream aerosol of the aerosol-generating article.
  • Such flavoring agents can include tobacco but also other sources than tobacco are possible (in addition or as an alternative).
  • the flavoring agent can be natural or artificial. It is preferably employed as concentrate or flavor packages.
  • Exemplary flavoring agents and/or flavors generated by the flavoring agent are selected from a group comprising tobacco, nicotine, vanillin, ethyl vanillin, cream, tea, coffee, fruit (e.g., apple, cherry, strawberry, peach and citrus flavors, including lime and lemon), maple, menthol, mint, peppermint, spearmint, Wintergreen, nutmeg, clove, lavender, cardamom, ginger, honey, anise, sage, cinnamon, sandalwood, jasmine, cascarilla, cocoa, licorice.
  • Flavoring agents also can include acidic or basic characteristics (e.g., organic acids, such as levulinic acid, succinic acid, and pyruvic acid).
  • the taste of the aerosol can be adapted to consumer’s requests.
  • the body of the aerosol generating article forms a cylindrical body.
  • An advantage of such a geometry is the big volume-to-surface ratio. Furthermore, homogeneous heating is possible by heat application onto the surface.
  • the aerosol generating article has a thickness (or outer diameter) of 15 mm or less, preferably less than 9 mm, most preferably of about 7 mm.
  • the invention is further directed to a method for producing an aerosol from an aerosol generating article as described above, by supplying heat to the aerosol generating substrate. This method allows generating an aerosol, which than can be inhaled by a user.
  • the heat is generated by suppling electrical voltage to a heating element.
  • the heating element preferably has a high electrical resistance.
  • the method of forming an aerosol can comprise placing an aerosol generating article as otherwise described herein into a heating chamber of an aerosol generating device.
  • the (at least one heating element of the) oven is in electrical connection with an electrical power source.
  • the electrical power source can be an electronic smoking device.
  • An electronic smoking device is adapted to direct the generated aerosol to a mouth piece where it can be inhaled by a user.
  • the method is very user friendly.
  • An electronic aerosol-generating article device for the article preferably comprises an accommodating cavity (preferably an oven) for accommodating the aerosol-generating article.
  • the method steps are intended to be carried out using an aerosol-generating article as described above.
  • the method in particular relates to using such an aerosol-generating article as described above.
  • all the features of an aerosol-generating article disclosed in combination with the method steps are also preferred embodiments of the above-described aerosol-generating article individually or in combination with other features.
  • the above-mentioned aerosol-generating article comprises at least means allowing the method steps (individually and/or in combination) to be performed by a user.
  • the invention is further directed to a method for manufacturing an aerosol generating article, preferably an article preferably article as described above.
  • This method comprises the steps of: providing a first component, comprising a mouth piece and/or spacing subassembly wrapper, arranging an aerosol generating rod on a free end of the first component, wherein the aerosol generating rod comprises an aerosol generating substrate and a substrate wrapper, forming a gap of at least 0.05 mm and at most 2 mm between the first component and the aerosol generating rod, and
  • RECTIFIED SHEET (RULE 91) ISA/EP combining a mouth piece and/or spacing subassembly with the aerosol generating rod with an outer wrapper, wherein the outer wrapper overlaps with the gap between a mouth and/or spacing subassembly and an aerosol generating rod.
  • This method allows fast production of an aerosol generating article having a gap between the individual wrappers of the first component (e.g. the mouth piece and/or the spacing subassembly) and the aerosol generating rod.
  • the first component e.g. the mouth piece and/or the spacing subassembly
  • the individual wrappers of the first component and the aerosol generating rod are separated with respect to each other by the gap, but the entire mouth piece and/or spacing subassembly is separated from the aerosol generating rod.
  • migration of a liquid between the mouth piece and/or the spacing subassembly on one hand and the aerosol generating rod on the other hand is effectively omitted.
  • the method preferably comprises the steps of: providing the first component, wherein the first component comprises two mouth pieces and/or spacing subassemblies, each comprising a mouth piece and/or spacing subassembly wrapper, wherein both are arranged on opposite sides of the first component, arranging an aerosol generating rod on each free end of the first component, preferably on a free end of each of the mouth pieces and/or spacing subassemblies, wherein each aerosol generating rod comprises an aerosol generating substrate and a substrate wrapper, forming a gap of at least 0.05 mm and at most 2 mm between each mouth piece and/or spacing subassembly and each aerosol generating rod, and combining a mouth piece and/or spacing subassembly with an aerosol generating rod with an outer wrapper, wherein the outer wrapper overlaps with the gap between the mouth and/or spacing subassembly and the aerosol generating rod.
  • the mouth pieces and/or cooling subassemblies of the first component are separated.
  • a cutting device preferably a rotating cutting device.
  • a rotating cutting device can for example be selected from a group comprising a rotating knife, a rotating saw, and a band saw. This method allows separating two aerosol generating articles from a single pre product.
  • a swashplate is used for generating the gap and/or adjusting the length or width of the gap.
  • a length or width of the gap is preferably adjusted by a swashplate (also
  • the swashplate preferably comprises a disk attached to a rotatable shaft.
  • the disk is preferably mounted at an oblique angle with respect to the shaft.
  • the length (or width) of the gap can be adjusted by changing the angle. Additionally or alternatively, the length (or width) of the gap can be adjusted by the size of the disk.
  • a greater angle and/or a grater diameter of the disk results in a longer or wider gap.
  • the angle of the disk with respect to the shaft is in a range of 95° - 135°, preferably 100° - 125°.
  • the diameter of the disk is preferably in the range of 5 - 200 mm, preferably in the range of 10 - 100 mm, more preferably in the range of 20 - 50 mm.
  • the angle of the disk with respect to the shaft is adjustable. More preferably the angle can be adjusted by turning an adjustment screw.
  • the disk is connected to the shaft by means of a hinge.
  • the hinge allows a rotation between the disk and the shaft. More preferably the rotation is restricted. Thus, it allows only a limited variation of the angle.
  • Fig. 1a-c a schematic illustration of stain prevention by liquid-proof or liquid-repellant materials
  • FIG. 2a, b a schematic illustration of a production step of a comparative example of an aerosol generating article (Fig. 2a) and an image of the boundary between two wrappers without gap (Fig. 2b);
  • FIG. 3a-c a schematic illustration of a production step of an aerosol generating article according to the present invention (Fig. 3a) and images of the gap between two wrappers (Fig. 3b and 3c);
  • FIG. 4a, b images of a comparative example of aerosol generating articles (Fig. 4a) and a detail image of the boundary between two wrappers (Fig. 4b);
  • Fig. 5a, b images of aerosol generating articles according to the present invention (Fig. 5a) and a detail image of the gap between two wrappers (Fig. 5b);
  • FIG. 6a, b images of a comparative example of aerosol generating articles (Fig. 6a) and aerosol generating articles according to the present invention (Fig. 6b) after storage;
  • Fig. 7 an illustration of the cigarette paper stain trend (13 mg liquid).
  • Fig. 8 an illustration of the cigarette paper and tipping paper stain trend (13 mg liquid);an
  • FIG. 9 illustration of the cigarette paper stain trend (25 mg liquid).
  • Fig. 10 an illustration of the cigarette paper and tipping paper stain trend (25 mg liquid);
  • Fig. 1a-c show a schematic illustration of stain prevention by liquid-proof or liquid-repellant materials. Wrapper material may prevent liquid from traversing its thickness by being liquid proof or being liquid repellent.
  • Fig. 1a illustrates the properties of papers 10 having different repellant properties with respect to a liquid 1. Surfaces having a high repellency with respect to the liquid 1 (left) cause a large contact angle. As a result, the liquid 1 forms a drop-like structure only contacting a very small area of the (cigarette) paper 10. None or only very little amounts of the liquid will enter inside the paper 10. A hydrophobic wrapper surface has a surface angle above 90 degrees. In contrast thereto on the right a paper 10 having very low repellant properties with respect to a liquid 1 is illustrated.
  • Fig. 1b illustrates a theoretical explanation for a complete prevention of staining of a tipping paper 20.
  • the mouth piece wrapper 30 and/or spacing subassembly wrapper 30 can be liquid-proof, i.e. , liquid impermeable.
  • diffusion 80 of liquids along the direction of the arrow 80 is prevented.
  • the liquid 1 remains inside the mouth piece and/or spacing subassembly 50 and cannot pass to the tipping paper 20. Accordingly, also no coloring substances which might result in staining could migrate with the liquid 1 to the visible tipping paper 20. Even in case some liquid 1 passes the
  • RECTIFIED SHEET (RULE 91) ISA/EP boundary 60 between the mouth piece and/or spacing subassembly 50 and reaches the aerosol generating substrate 40 of the aerosol generating rod 40, it cannot traverse the liquidproof tipping paper 20.
  • complete liquid-proof of the mouth piece and/or spacing subassembly wrapper 30 cannot be guaranteed.
  • Fig. 1b only illustrates a theoretical explanation of different staining properties when using different mouth piece and/or spacing subassembly wrappers 30.
  • Reference sign 10 indicates the cigarette paper of the aerosol generating rod 40
  • Fig. 1c illustrates a theoretical explanation of reduced staining of cigarette paper 10.
  • Reduced staining can be achieved by using a mouth piece wrapper 30 and/or spacing subassembly wrapper 30, which is repellant with respect to the liquid 1 . Due to its liquid repellant properties, the liquid - when contacting the inner surface of the wrapper 30 - only contacts a very small surface area. It does not tend to migrate along the inner surface along the direction of arrow 80 towards the aerosol generating rod 40. Thus, it is very unlikely that liquid 1 migrates along or within the wrapper to the adjacent no aerosol generating rod 40. Thus, the liquid 1 cannot extract colouring substances from the aerosol generating substrate, which then could migrate with the liquid through the cigarette paper 10.
  • Fig. 2a shows a schematic illustration of a production step of a comparative example of an aerosol generating article.
  • Two aerosol generating rods 40 are attached to both ends of a mouth piece and/or spacing subassembly 50.
  • the aerosol generating rods 40 are pressed along the direction of the arrows P onto the ends of a mouth piece and/or spacing subassembly 50 by swash plates 100.
  • the wrapper 10 (or cigarette paper 10) of the aerosol generating rods 40 are pressed towards the mouth piece and/or spacing subassembly wrapper 30 in such a way that both wrappers 10, 30 overlap at the boundaries 60 between the aerosol generating rods 40 and the mouth piece and/or spacing subassembly 50.
  • the wrappers 30, 50 which overlap at the boundary 60, are illustrated in fig. 2b.
  • Fig. 3a-c shows a schematic illustration of a production step of an aerosol generating article according to the invention. Similar to the process illustrated in Fig. 2a, two aerosol generating rods 40 are attached to both ends of a mouth piece and/or spacing subassembly 50. However, in contrast to the process illustrated in fig. 2a, the aerosol generating rods 40 are both pulled backwards along the arrows P by the swash plates 100. Thus, the aerosol generating rods 40 are not directly attached to both ends of the mouth piece and/or spacing subassembly 50 but spaced apart. The resulting gaps 5 between the aerosol generating rods 40
  • the wrapper 10 (or cigarette paper 10) of the aerosol generating rods 40 and the mouth piece and/or spacing subassembly wrapper 30 do not overlap but form a gap 5 between them.
  • the gap 5 Through the gap 5 the underlaying tipping paper 20 can be seen.
  • the gap 5 is visible.
  • Fig. 4a and 4b show images of a comparative example of aerosol generating articles.
  • Fig 4a shows a plurality of aerosol generating articles in an area of the tipping paper 20.
  • the boundary 60 between the aerosol generating rod 40 and the mouth piece and/or spacing subassembly 50 is covered by the tipping paper 20 and only slightly visible. In the detailed image shown in fig.4b.
  • the boundary 60 between the aerosol generating rod 40 and the mouth piece and/or spacing subassembly 50 can be seen through the tipping paper 20.
  • Fig. 5a and 5b show similar images of aerosol generating articles as figs. 4a and 4b, however for aerosol generating articles according to the present invention. Due to the width w of the gap 5 between the aerosol generating rod 40 and the mouth piece and/or spacing subassembly 50 the boundary 60 can even be seen through the covering tipping paper 20. In the detailed image shown in fig. 5b of the area in which the gap 5 is located, the gap is clearly visible. As indicated by the scale 70, the width of the illustrated gap 5 can be estimated to be in the range of about 0.5 mm.
  • Fig. 6a and 6b show images of aerosol generating articles.
  • Fig. 6a shows a comparative example of aerosol generating articles after storage for 8 weeks at 35°C and 40 % relative humidity (rh).
  • the amount of liquid 1 in the mouth piece and/or spacing subassembly 50 was 13 mg.
  • staining is noticeable through the tipping paper 20 in the region next to the boundary 60 between the aerosol generating rod 40 and the mouth piece and/or spacing subassembly 50.
  • the aerosol generating articles according to the present invention contain13 mg liquid in the mouth piece and/or spacing subassembly 50 and have been stored for 8 weeks at 35°C and 40 % rh.
  • Fig. 7 is a diagram illustrating a trend of staining of a cigarette paper. All aerosol generating articles comprise 13 mg liquid and staining was monitored only at the cigarette paper over a period of 8 weeks at temperatures of 22°C and 35°C.
  • the aerosol generating articles differ with respect to each other in that in a first group (graphs indicated by “BL”) the aerosol generating rod and the mouth piece and/or spacing subassembly are separated by a gap whereas the in a second group (graphs indicated by “OL”) the aerosol generating rod and the mouth piece and/or spacing subassembly are contacting each other at the boundary.
  • the diagram shows that a first graph 110 and a second graph 120 both don’t show any staining at all. These both graph belong to aerosol generating articles with gap between the aerosol generating rod and the mouth piece and/or spacing subassembly, but held at different temperatures of 22°C (graph 110) and 35°C (graph 120).
  • Fig. 8 is a diagram very similar to the diagram as shown in fig. 7. However, it illustrates a trend of staining of both, a cigarette paper and a tipping paper.
  • the aerosol generating articles comprise 13 mg liquid, too and staining was monitored over a period of 8 weeks at temperatures of 22°C and 35°C.
  • graphs indicated by “BL” the aerosol generating rod and the mouth piece and/or spacing subassembly are separated by a gap
  • the in the second group graphs indicated by “OL” the aerosol generating rod and the mouth piece and/or spacing subassembly are contacting each other at the boundary.
  • the diagram shows high percentages of staining for the group without gap (“OL”). Especially in the group without gap held at 35°C (graph 240), staining occurs after 8 weeks at more than 80 % of the aerosol generating articles of this group. When held at only 22°C (graph (230), the rate of staining was lower but still high. After 6 weeks nearly 40 % of the aerosol generating articles showed staining.
  • Staining also occurred in the group of aerosol generating articles with gap (graphs 130 and 140). However, the rate of aerosol generating articles with staining was lower and/or staining occurred later during the test. Surprisingly, the group held at 35°C (graph 140) showed less staining than the group stored at 22°C (graph 130). After 4 weeks the group stored at 35°C still don’t show any staining at all. Even after 8 weeks only less than 10 % of the aerosol generating articles of this group showed staining. For the group stored ad 22°C, no staining occurred within the first two weeks. After 4 and 6 weeks staining was moderate and could be detected at about 5 % of the aerosol generating articles. From week 6 to 8 the rate of stained aerosol generating articles in this group increased to more than 20 %.
  • the diagram shown in fig. 9 is very similar to the diagram shown in fig. 7. Only staining of the cigarette paper was monitored. However, the amount of liquid was increased from 13 mg to 25 mg.
  • the groups of aerosol generating articles with gap (graphs 150 and 160) as well as those without gap (graphs 250 and 260) were stored at 22°C (graphs 150 and 250) or 35°C (graphs 160 and 260).
  • FIG. 10 shows a diagram illustrating the cigarette paper and tipping paper stain trend for 4 groups of aerosol generating articles having 25 mg liquid. Similar to fig. 8 staining of the cigarette paper and the tipping paper was monitored. Similar to the other experiments, one group of aerosol generating articles with gap (graph 170) and without gap (graph 270) was stored at 22°C each and one group of aerosol generating articles with gap (graph 180) and without gap (graph 280) was stored at 35°C each.

Landscapes

  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)

Abstract

The invention relates to an aerosol generating article comprising a mouth piece and/or spacing subassembly and an aerosol generating rod combined together with an outer wrapper; wherein the aerosol generating article extends along a longitudinal direction and the mouth piece and/or spacing subassembly is arranged along a flow direction of the aerosol downstream the aerosol generating rod, wherein the mouth piece and/or spacing subassembly comprises a mouth piece and/or spacing subassembly wrapper for wrapping the mouth piece and/or spacing subassembly at least partially, and the aerosol generating rod comprises an aerosol generating substrate and a substrate wrapper for wrapping the aerosol generating substrate at least partially, wherein the mouth piece and/or spacing subassembly wrapper and the substrate wrapper are distant one another along the longitudinal direction to form a gap a least equal to 0.05 mm and at most equal to 2 mm between the mouth piece and/or spacing subassembly wrapper and the substrate wrapper and wherein the outer wrapper overlaps with the gap. A method for producing such an aerosol generating article is disclosed, too.

Description

AN AEROSOL-GENERATING ARTICLE AND METHOD FOR MANUFACTURING AN AEROSOL-GENERATING ARTICLE
Description
The present invention is directed to an aerosol generating article with improved optical properties. Furthermore, the invention is directed to a method for manufacturing an aerosol generating article.
Smoking articles such as cigarettes are consumer goods produced in large quantities. They usually comprise a tobacco rod formed by wrapping tobacco cut filler with a paper-based wrapper in a longitudinally extending substantially cylindrical rod. Beyond their primary tobacco wrapping function, paper based smoking article wrappers also often form a communication support for manufacturers and may comprise various printed designs, colours and/or markings (watermarks, embossing, etc...), which may form part of branding features allowing consumers to recognize products among others. Thus, it is highly appreciated to provide an appealing appearance of the cigarette paper. Contaminations of the visible paper surface should be avoided to provide premium appearance of the cigarettes and/or the cigarette paper.
In the following the terms “smoking article” and “cigarette” are used synonymously. In the last years so-called “heat- not- burn” devices became more popular. In such devices a flavour source is not burnt but heated to generate an aerosol, which can be consumed by a user. The substrate from which the aerosol is generated, often comprises tobacco. The substrate is often provided in form of an exchangeable cartridge to be inserted in an aerosol generating device. Similar to conventional smoking articles as cigarettes, in these cartridges, the tobacco is often hold in place by a cigarette paper I wrapper. Some embodiments of the invention are only described for a cigarette or a cigarette paper. However, these embodiments should be considered to be applicable and disclosed also for any other aerosol generating article and/or aerosol generating article wrapper. Therefore, in the present application, the
RECTIFIED SHEET (RULE 91) ISA/EP terms “aerosol generating article” refers to a smoking article (or cigarette including cigarillo) and to a heat-not-burn aerosol generating article.
Smoking articles comprise non-tobacco material, e.g., filter, containing liquids. Some liquids comprise a flavouring agent such as menthol or additives such as plasticizer, humectant, phenol reducing agent, taste smoothening agent, water, etc. These liquids may be used in various combinations and ratios in the non-tobacco material.
A disadvantage of liquids in the filter segment is, that even with the best application possible, due to the standard deviation of raw materials and production process, residual liquids move from the filter to an adjacent tobacco portion and migrate to the wrapper of the tobacco portion thereby causing inaesthetic stain of the tobacco wrapper. Furthermore, liquids may further extract some tobacco pigments to the wrapper thus increasing the staining issue.
In the past there have been attempts to prevent such staining by coating the tobacco or the wrapper or to make the wrapper repellent against the liquid. However, these additional coating agents often impact taste negatively or cause trouble during production such as by creating paper dust.
Therefore, it is an object of the invention to avoid staining of the visible cigarette paper or wrapper when liquids are present in the non-tobacco material (e.g. filter) of the aerosol generating article. A further object of the invention is to provide a method for manufacturing the aerosol generating article of the invention.
It has been found that these problems could be overcome by an aerosol-generating article according to claim 1 and a method according to claim 13.
An aerosol-generating article according to the present invention comprises a mouth piece and/or spacing subassembly and an aerosol generating rod combined together with an outer wrapper (or “tipping paper”). The aerosol generating article extends along a longitudinal direction and the mouth piece and/or spacing subassembly is arranged along a flow direction of the aerosol downstream the aerosol generating rod. The mouth piece and/or spacing subassembly comprises a mouth piece and/or spacing subassembly wrapper for wrapping the mouth piece and/or spacing subassembly at least partially. The aerosol generating rod comprises an aerosol generating substrate and a substrate wrapper for wrapping the aerosol generating substrate at least partially.
RECTIFIED SHEET (RULE 91) ISA/EP The mouth piece and/or spacing subassembly wrapper and the substrate wrapper are distant one another along the longitudinal direction to form a gap at least equal to 0.05 mm and at most equal to 2 mm between the mouth piece and/or spacing subassembly wrapper and the substrate wrapper. The outer wrapper overlaps with the gap. Thus, the gap is preferably not visible for a user. Thanks to the presence of the gap, the substrate wrapper is protected from liquid migration and staining even if the aerosol-generating article is stored over a long period of time.
In the context of the invention, an aerosol-generating article may be any consumable article comprising a charge of solid or semi-solid aerosol-generating material comprising tobacco material. The tobacco material is preferably selected from a group comprising tobacco leaf, a part of tobacco leaf, a part of tobacco plant, a tobacco derivative, tobacco fine particles, grinded tobacco, and combinations thereof. This allows extracts of the tobacco material to be included in the aerosol.
The aerosol-generating material may further comprise an aerosol forming agent selected from the group of: a polyhydric alcohol such as glycerin, a diol such as polypropylene glycol, triethylene glycol, or 1-3-butanediol, an ester of polyhydric alcohol such as glycerol monoacetate, glycerol diacetate or glycerol triacetate, triethyl citrate or triacetin or combinations thereof.
The aerosol-generating material may comprise a tobacco component comprising tobacco material. The tobacco component may be selected from the group consisting of: extruded tobacco, band cast tobacco, tobacco paper, laminated tobacco, leaf tobacco, tobacco foam and combinations thereof. The tobacco component may comprise non-tobacco ingredients in particular aerosol forming agent, binding agent, filler, flavour, cooling agent and combinations thereof.
The aerosol could be generated by combustion or applying heat from an external source to the aerosol-generating substrate. Heat can be generated by an external heat source, more preferably by ohmic heating, induction heating, microwave heating, infrared heating or charcoal. The heating may be provided by conduction, radiation and/or induction. The heating device may comprise heating elements outside the aerosol-generating substrate or embedded in the substrate (e.g., heat resistive blade or pin or induction susceptor). The heat generated by the heat source is transferred to the aerosol-generating substrate, which then
RECTIFIED SHEET (RULE 91) ISA/EP releases an aerosol. The energy to the electrical heating device is preferably supplied by a rechargeable or replaceable battery.
In a preferred embodiment the gap between the wrapper of the mouth piece and/or the spacing subassembly and the substrate wrapper is of at least 0.1 mm. It had been shown that a gap of this width could prevent transfer of liquids to the substrate wrapper.
Preferably, the gap between the mouth piece and/or cooling subassembly wrapper and the substrate wrapper is in a range of 0.1 to 1 mm, preferably in a range of 0.2 to 0.6 mm, most preferably in a range of 0.2 to 0.5 mm. A gap of this width not only avoid transfer of liquid but is also small enough to be bridged by the outer wrapper without detriment to the strength and stability of the aerosol generating article. Thus, easy handling of the aerosol generating article is possible with a reduced risk of breaking the aerosol generating article between the mouth piece and/or spacing subassembly wrapper and the substrate wrapper. For example, the aerosol-generating article remains stiff enough to be inserted in and removed from the heating chamber of an aerosol generating device without breaking or cracking.
Preferably, there is a gap between the mouth piece and/or spacing subassembly wrapper and the substrate wrapper. The gap is preferably the same gap as between the mouth piece and/or spacing subassembly wrapper and the aerosol generating substrate wrapper. By having a small gap between these components, liquid is also prevented from migrating to the aerosol generating substrate for possibly further contaminating the wrapper of the aerosol generating substrate.
In a preferred embodiment the mouth piece and/or spacing subassembly comprises a liquid substance or additive. Liquids can be used to change the taste or properties of the aerosol. For example, some liquids can give the aerosol a smoother taste. Preferably a liquid selected from a group comprising an alcohol, a fatty acid, a fatty acid ester, a polyether polymer, an essential oil and combinations thereof. More preferably a liquid is selected from a group comprising polypropylene glycol (PPG), polypropylene glycol glyceryl ether, polybutylene glycol, diglycerin, sorbitan fatty acid ester, glycerin fatty acid ester, polyglycerin fatty acid ester, propylene glycol fatty acid ester, polyethylene glycol, caprylyl glycol and combinations thereof. At least some of these substances are suitable to reduce the amount of phenols from the aerosol, which results in a smoother taste for the user.
RECTIFIED SHEET (RULE 91) ISA/EP In an embodiment of the aerosol generating article, the aerosol generating substrate comprises soluble matter. This soluble matter is preferably soluble in the liquid substance or additive mentioned above. When getting in contact with a suitable liquid, the soluble matter dissolves and diffuses at least through parts of the aerosol generating article and/or the aerosol generating substrate. To keep the soluble matter in place, it is preferred to avoid its contact with a liquid. A gap as described above effectively prevents contact of soluble matter located in the aerosol generating substrate with a liquid located in the mouth piece and/or spacing subassembly.
Preferably, the aerosol generating article, more preferably the mouth piece, most preferably the filter segment, comprises the liquid in an amount of 2 - 100 mg, preferably 5 - 50 mg, more preferably 8 - 35 mg, most preferably 10 - 20 mg. It has been found that with these amounts of liquid, staining could be prevented effectively. Experiments showed that with 13 mg polypropylene glycol no staining occurred. With 25 mg of polypropylene glycol staining was reduced by 80 % with respect to staining of an aerosol generating article without the gap.
In a preferred embodiment of the aerosol generating article, the mouth piece and/or spacing subassembly comprises a filter segment. It has been found that a filter can hold back solid matter. Thus, the taste of the aerosol could be improved.
Preferably, the filter segment comprises a filtering material comprising paper or other natural cellulose fibre. These materials have been found to be advantageous, since they provide excellent filtering properties. Additionally, they are recyclable and/or biodegradable. Preferably the filtering material is selected from a group comprising hemp, flax, abaca, sisal, cotton, regenerated cellulose and combinations thereof. These materials are available in large quantities and are especially suitable for filtering undesired components from the aerosol. The liquid substance or additive may be mixed or coated with the filtering material. As aforementioned, the liquid is preferably contained in the filtering material in an amount of 2 - 100 mg, preferably 5 - 50 mg, more preferably 8 - 35 mg, most preferably 10 - 20 mg. For example, the liquid may be polypropylene glycol (PPG), polypropylene glycol glyceryl ether, polybutylene glycol, diglycerin, sorbitan fatty acid ester, glycerin fatty acid ester, polyglycerin fatty acid ester, propylene glycol fatty acid ester, polyethylene glycol, caprylyl glycol and combinations thereof. The liquid may improve taste and/or reduce phenols. For example, the amount of PPG may be e.g. between 10 - 30 mg, more preferably 3 - 25 mg.
RECTIFIED SHEET (RULE 91) ISA/EP In an embodiment of the aerosol generating article, the mouth piece and/or spacing subassembly wrapper and/or the substrate wrapper comprises a liquid-proof, hydrophobic or oleophobic coating. By such a coating, the transfer of a liquid through the mouth piece and/or spacing subassembly wrapper can be omitted or at least noticeably reduced. Preferably the coating is selected dependent from the liquid. Since hydrophobic coatings usually prevent entering of polar liquids like water and short chain alcohols very effectively, these coatings are preferred, if polar liquids are present. In contrast thereto, oleophobic coatings are less effective against polar compounds but effective against nonpolar liquids. The oleophobic coating preferably comprises a very polar compound, which is adhered or bound to the surface of the wrapper. Preferably, the surface tension of such a compound is greater than that of oil and/or water. Preferably the oleophobic coating comprises a fluorocarbon, preferably PFAS (Fluorin). Preferably the oleophobic coating comprises a fluoropolymer-based solid. In a preferred embodiment, the coating comprises a perfluoropolyether.
By selecting a suitable coating, the liquid may not be able to enter the outer wrapper which overlaps with the gap. Accordingly, Liquid cannot traverse the gap. However, it has been found that even without such a coating, the staining caused by transfer of the liquid can be prevented due to the gap. Thus, usage of a wrapper without coating is also possible. However, a coating as described above has been found to be advantageous for some liquids, or very small gap dimensions or wrapper materials providing good liquid-transfer properties (e.g., porous paper).
In a preferred embodiment of the aerosol generating article, the mouth and/or spacing subassembly comprises at least one tubular member. This tubular member preferably comprises a hollow paper tube or fibre tube. Additionally and/or alternatively, the tubular member is preferably positioned upstream of a filter segment. Such a tubular member provides a very good surface to volume ratio. Thus, handling of the tubular member is facilitated.
The tubular member is preferably positioned adjacent the aerosol generating rod by the same gap as the wrappers. In other words, the gap isn’t only separating the substrate wrapper with respect to the mouth piece and/or spacing subassembly wrapper but also the individual components of these building blocks. The outer wrapper preferably bridges these gaps. The tubular member is only an example of an advantageous embodiment. Preferably the tubular member is a filter segment adjacent the aerosol generating rod (but separated by the gap). Preferably, the gap is between the aerosol generating rod and the filter segment.
RECTIFIED SHEET (RULE 91) ISA/EP Preferably, the aerosol generating article as described herein is a heat-not-burn article. Preferably, the aerosol generating article is designed for being heated in an electrically aerosol generating device. Therefore, the aerosol generating article preferably allows insertion of a heating blade, and/or heat transfer from a heating cavity (“oven”) through at least parts of an outer surface of the aerosol generating article inserted in the cavity, and/or induction heating via susceptor(s) inserted in the aerosol generating material or combinations of these heating means.
In a preferred embodiment the aerosol generating rod is located or suitable to be located in an oven of an electrically aerosol generating device. However, the present invention is also applicable to combustible cigarettes.
In certain embodiments of the invention the aerosol-generating article may comprise a flavoring agent. Such a flavoring agent can preferably alter the sensory or organoleptic character or nature of the mainstream aerosol of the aerosol-generating article. Such flavoring agents can include tobacco but also other sources than tobacco are possible (in addition or as an alternative). The flavoring agent can be natural or artificial. It is preferably employed as concentrate or flavor packages. Exemplary flavoring agents and/or flavors generated by the flavoring agent are selected from a group comprising tobacco, nicotine, vanillin, ethyl vanillin, cream, tea, coffee, fruit (e.g., apple, cherry, strawberry, peach and citrus flavors, including lime and lemon), maple, menthol, mint, peppermint, spearmint, Wintergreen, nutmeg, clove, lavender, cardamom, ginger, honey, anise, sage, cinnamon, sandalwood, jasmine, cascarilla, cocoa, licorice. Flavoring agents also can include acidic or basic characteristics (e.g., organic acids, such as levulinic acid, succinic acid, and pyruvic acid). Thus, the taste of the aerosol can be adapted to consumer’s requests.
Preferably the body of the aerosol generating article forms a cylindrical body. An advantage of such a geometry is the big volume-to-surface ratio. Furthermore, homogeneous heating is possible by heat application onto the surface.
To allow heating of the innermost volume of the aerosol generating article (or the aerosol generating rod), the aerosol generating article has a thickness (or outer diameter) of 15 mm or less, preferably less than 9 mm, most preferably of about 7 mm. Thus, quick and homogenous heat distribution throughout the aerosol generating substrate can be ensured after external heat application.
RECTIFIED SHEET (RULE 91) ISA/EP The invention is further directed to a method for producing an aerosol from an aerosol generating article as described above, by supplying heat to the aerosol generating substrate. This method allows generating an aerosol, which than can be inhaled by a user.
Preferably the heat is generated by suppling electrical voltage to a heating element. The heating element preferably has a high electrical resistance.
In certain embodiments, the method of forming an aerosol can comprise placing an aerosol generating article as otherwise described herein into a heating chamber of an aerosol generating device. Preferably the (at least one heating element of the) oven is in electrical connection with an electrical power source. For example, the electrical power source can be an electronic smoking device. An electronic smoking device is adapted to direct the generated aerosol to a mouth piece where it can be inhaled by a user. Thus, the method is very user friendly.
An electronic aerosol-generating article device for the article preferably comprises an accommodating cavity (preferably an oven) for accommodating the aerosol-generating article.
Preferably, the method steps are intended to be carried out using an aerosol-generating article as described above. The method in particular relates to using such an aerosol-generating article as described above. Conversely, all the features of an aerosol-generating article disclosed in combination with the method steps are also preferred embodiments of the above-described aerosol-generating article individually or in combination with other features. Preferably, the above-mentioned aerosol-generating article comprises at least means allowing the method steps (individually and/or in combination) to be performed by a user.
The invention is further directed to a method for manufacturing an aerosol generating article, preferably an article preferably article as described above. This method comprises the steps of: providing a first component, comprising a mouth piece and/or spacing subassembly wrapper, arranging an aerosol generating rod on a free end of the first component, wherein the aerosol generating rod comprises an aerosol generating substrate and a substrate wrapper, forming a gap of at least 0.05 mm and at most 2 mm between the first component and the aerosol generating rod, and
RECTIFIED SHEET (RULE 91) ISA/EP combining a mouth piece and/or spacing subassembly with the aerosol generating rod with an outer wrapper, wherein the outer wrapper overlaps with the gap between a mouth and/or spacing subassembly and an aerosol generating rod.
This method allows fast production of an aerosol generating article having a gap between the individual wrappers of the first component (e.g. the mouth piece and/or the spacing subassembly) and the aerosol generating rod.
Preferably not only the individual wrappers of the first component and the aerosol generating rod are separated with respect to each other by the gap, but the entire mouth piece and/or spacing subassembly is separated from the aerosol generating rod. Thus, migration of a liquid between the mouth piece and/or the spacing subassembly on one hand and the aerosol generating rod on the other hand, is effectively omitted.
In order to produce two aerosol generating articles simultaneously, the method preferably comprises the steps of: providing the first component, wherein the first component comprises two mouth pieces and/or spacing subassemblies, each comprising a mouth piece and/or spacing subassembly wrapper, wherein both are arranged on opposite sides of the first component, arranging an aerosol generating rod on each free end of the first component, preferably on a free end of each of the mouth pieces and/or spacing subassemblies, wherein each aerosol generating rod comprises an aerosol generating substrate and a substrate wrapper, forming a gap of at least 0.05 mm and at most 2 mm between each mouth piece and/or spacing subassembly and each aerosol generating rod, and combining a mouth piece and/or spacing subassembly with an aerosol generating rod with an outer wrapper, wherein the outer wrapper overlaps with the gap between the mouth and/or spacing subassembly and the aerosol generating rod.
Preferably, in a further step the mouth pieces and/or cooling subassemblies of the first component are separated. This is preferably performed by a cutting device, preferably a rotating cutting device. Such a rotating cutting device can for example be selected from a group comprising a rotating knife, a rotating saw, and a band saw. This method allows separating two aerosol generating articles from a single pre product.
For generating the gap and/or adjusting the length or width of the gap, preferably a swashplate is used. Thus, a length or width of the gap is preferably adjusted by a swashplate (also
RECTIFIED SHEET (RULE 91) ISA/EP known as slant disk). The swashplate preferably comprises a disk attached to a rotatable shaft. The disk is preferably mounted at an oblique angle with respect to the shaft. The length (or width) of the gap can be adjusted by changing the angle. Additionally or alternatively, the length (or width) of the gap can be adjusted by the size of the disk. A greater angle and/or a grater diameter of the disk results in a longer or wider gap. Preferably the angle of the disk with respect to the shaft is in a range of 95° - 135°, preferably 100° - 125°. The diameter of the disk is preferably in the range of 5 - 200 mm, preferably in the range of 10 - 100 mm, more preferably in the range of 20 - 50 mm.
Preferably the angle of the disk with respect to the shaft is adjustable. More preferably the angle can be adjusted by turning an adjustment screw. Preferably the disk is connected to the shaft by means of a hinge. Preferably the hinge allows a rotation between the disk and the shaft. More preferably the rotation is restricted. Thus, it allows only a limited variation of the angle.
Further advantages, objectives and features of the present invention will be described, by way of example only, in the following description with reference to the appended figure. In the figure, like components in different embodiments can exhibit the same reference symbols.
The figure show:
Fig. 1a-c a schematic illustration of stain prevention by liquid-proof or liquid-repellant materials;
Fig. 2a, b a schematic illustration of a production step of a comparative example of an aerosol generating article (Fig. 2a) and an image of the boundary between two wrappers without gap (Fig. 2b);
Fig. 3a-c a schematic illustration of a production step of an aerosol generating article according to the present invention (Fig. 3a) and images of the gap between two wrappers (Fig. 3b and 3c);
Fig. 4a, b images of a comparative example of aerosol generating articles (Fig. 4a) and a detail image of the boundary between two wrappers (Fig. 4b);
RECTIFIED SHEET (RULE 91) ISA/EP Fig. 5a, b images of aerosol generating articles according to the present invention (Fig. 5a) and a detail image of the gap between two wrappers (Fig. 5b);
Fig. 6a, b images of a comparative example of aerosol generating articles (Fig. 6a) and aerosol generating articles according to the present invention (Fig. 6b) after storage;
Fig. 7 an illustration of the cigarette paper stain trend (13 mg liquid);
Fig. 8 an illustration of the cigarette paper and tipping paper stain trend (13 mg liquid);an
Fig. 9 illustration of the cigarette paper stain trend (25 mg liquid);
Fig. 10 an illustration of the cigarette paper and tipping paper stain trend (25 mg liquid);
Fig. 1a-c show a schematic illustration of stain prevention by liquid-proof or liquid-repellant materials. Wrapper material may prevent liquid from traversing its thickness by being liquid proof or being liquid repellent. Fig. 1a illustrates the properties of papers 10 having different repellant properties with respect to a liquid 1. Surfaces having a high repellency with respect to the liquid 1 (left) cause a large contact angle. As a result, the liquid 1 forms a drop-like structure only contacting a very small area of the (cigarette) paper 10. None or only very little amounts of the liquid will enter inside the paper 10. A hydrophobic wrapper surface has a surface angle above 90 degrees. In contrast thereto on the right a paper 10 having very low repellant properties with respect to a liquid 1 is illustrated. Surfaces having a low repellency with respect to the liquid 1 cause a small contact angle. As a result, the liquid 1 covers a large surface area of the paper 10. The liquid 1 tends to enter inside the paper 10 and can migrate through pores in the inner volume of the paper 10. In the middle a paper 10 with medium repellency with respect to the liquid 1 is shown.
Fig. 1b illustrates a theoretical explanation for a complete prevention of staining of a tipping paper 20. To avoid staining of the tipping paper 20, the mouth piece wrapper 30 and/or spacing subassembly wrapper 30 can be liquid-proof, i.e. , liquid impermeable. Thus, diffusion 80 of liquids along the direction of the arrow 80 is prevented. Thus, the liquid 1 remains inside the mouth piece and/or spacing subassembly 50 and cannot pass to the tipping paper 20. Accordingly, also no coloring substances which might result in staining could migrate with the liquid 1 to the visible tipping paper 20. Even in case some liquid 1 passes the
RECTIFIED SHEET (RULE 91) ISA/EP boundary 60 between the mouth piece and/or spacing subassembly 50 and reaches the aerosol generating substrate 40 of the aerosol generating rod 40, it cannot traverse the liquidproof tipping paper 20. However, complete liquid-proof of the mouth piece and/or spacing subassembly wrapper 30 cannot be guaranteed. Fig. 1b only illustrates a theoretical explanation of different staining properties when using different mouth piece and/or spacing subassembly wrappers 30. Reference sign 10 indicates the cigarette paper of the aerosol generating rod 40
Fig. 1c illustrates a theoretical explanation of reduced staining of cigarette paper 10. Reduced staining can be achieved by using a mouth piece wrapper 30 and/or spacing subassembly wrapper 30, which is repellant with respect to the liquid 1 . Due to its liquid repellant properties, the liquid - when contacting the inner surface of the wrapper 30 - only contacts a very small surface area. It does not tend to migrate along the inner surface along the direction of arrow 80 towards the aerosol generating rod 40. Thus, it is very unlikely that liquid 1 migrates along or within the wrapper to the adjacent no aerosol generating rod 40. Thus, the liquid 1 cannot extract colouring substances from the aerosol generating substrate, which then could migrate with the liquid through the cigarette paper 10.
Fig. 2a shows a schematic illustration of a production step of a comparative example of an aerosol generating article. Two aerosol generating rods 40 are attached to both ends of a mouth piece and/or spacing subassembly 50. The aerosol generating rods 40 are pressed along the direction of the arrows P onto the ends of a mouth piece and/or spacing subassembly 50 by swash plates 100. Due to the movement of the swash plates, the wrapper 10 (or cigarette paper 10) of the aerosol generating rods 40 are pressed towards the mouth piece and/or spacing subassembly wrapper 30 in such a way that both wrappers 10, 30 overlap at the boundaries 60 between the aerosol generating rods 40 and the mouth piece and/or spacing subassembly 50. The wrappers 30, 50, which overlap at the boundary 60, are illustrated in fig. 2b.
Fig. 3a-c shows a schematic illustration of a production step of an aerosol generating article according to the invention. Similar to the process illustrated in Fig. 2a, two aerosol generating rods 40 are attached to both ends of a mouth piece and/or spacing subassembly 50. However, in contrast to the process illustrated in fig. 2a, the aerosol generating rods 40 are both pulled backwards along the arrows P by the swash plates 100. Thus, the aerosol generating rods 40 are not directly attached to both ends of the mouth piece and/or spacing subassembly 50 but spaced apart. The resulting gaps 5 between the aerosol generating rods 40
RECTIFIED SHEET (RULE 91) ISA/EP and both ends of the mouth piece and/or spacing subassembly 50 are bridged by the tipping paper 20. Thus, the resulting pre-product is stabilized.
As illustrated in fig. 3b and 3c, the wrapper 10 (or cigarette paper 10) of the aerosol generating rods 40 and the mouth piece and/or spacing subassembly wrapper 30 do not overlap but form a gap 5 between them. Through the gap 5 the underlaying tipping paper 20 can be seen. Especially in comparison with the comparative example illustrated in fig. 2b, the gap 5 is visible.
Fig. 4a and 4b show images of a comparative example of aerosol generating articles. Fig 4a shows a plurality of aerosol generating articles in an area of the tipping paper 20. The boundary 60 between the aerosol generating rod 40 and the mouth piece and/or spacing subassembly 50 is covered by the tipping paper 20 and only slightly visible. In the detailed image shown in fig.4b. The boundary 60 between the aerosol generating rod 40 and the mouth piece and/or spacing subassembly 50 can be seen through the tipping paper 20.
Fig. 5a and 5b show similar images of aerosol generating articles as figs. 4a and 4b, however for aerosol generating articles according to the present invention. Due to the width w of the gap 5 between the aerosol generating rod 40 and the mouth piece and/or spacing subassembly 50 the boundary 60 can even be seen through the covering tipping paper 20. In the detailed image shown in fig. 5b of the area in which the gap 5 is located, the gap is clearly visible. As indicated by the scale 70, the width of the illustrated gap 5 can be estimated to be in the range of about 0.5 mm.
Fig. 6a and 6b show images of aerosol generating articles. Fig. 6a shows a comparative example of aerosol generating articles after storage for 8 weeks at 35°C and 40 % relative humidity (rh). The amount of liquid 1 in the mouth piece and/or spacing subassembly 50 was 13 mg. In fig. 6a staining is noticeable through the tipping paper 20 in the region next to the boundary 60 between the aerosol generating rod 40 and the mouth piece and/or spacing subassembly 50.
In contrast thereto, in the image shown in fig. 6b nearly no staining is noticeable through the tipping paper 20 in the region next to the boundary 60 between the aerosol generating rod 40 and the mouth piece and/or spacing subassembly 50. The reduced staining is caused by the gap 5 (not visible since it is covered by the tipping paper 20) of the embodiment of the aerosol generating articles according to the present invention shown in fig. 6b. similar to the
RECTIFIED SHEET (RULE 91) ISA/EP comparative example shown in fig. 6a, the aerosol generating articles according to the present invention contain13 mg liquid in the mouth piece and/or spacing subassembly 50 and have been stored for 8 weeks at 35°C and 40 % rh.
Fig. 7 is a diagram illustrating a trend of staining of a cigarette paper. All aerosol generating articles comprise 13 mg liquid and staining was monitored only at the cigarette paper over a period of 8 weeks at temperatures of 22°C and 35°C. The aerosol generating articles differ with respect to each other in that in a first group (graphs indicated by “BL”) the aerosol generating rod and the mouth piece and/or spacing subassembly are separated by a gap whereas the in a second group (graphs indicated by “OL”) the aerosol generating rod and the mouth piece and/or spacing subassembly are contacting each other at the boundary.
The diagram shows that a first graph 110 and a second graph 120 both don’t show any staining at all. These both graph belong to aerosol generating articles with gap between the aerosol generating rod and the mouth piece and/or spacing subassembly, but held at different temperatures of 22°C (graph 110) and 35°C (graph 120).
In contrast thereto the graphs 210 and 22 both show staining. These both graph belong to aerosol generating articles without a gap between the aerosol generating rod and the mouth piece and/or spacing subassembly. When held over 8 weeks at a temperatures of 22°C (graph 210) the staining was moderate. After 6 as well as after 8 weeks only 2 % of the monitored aerosol generating articles showed staining. When held at 35°C (graph 220) more aerosol generating articles showed staining. After 4 weeks at nearly 6 % of the aerosol generating articles staining was monitored. After 6 weeks staining occurred at more than 6 % of the aerosol generating articles and after 8 weeks even 12 % of the monitored aerosol generating articles showed staining.
Fig. 8 is a diagram very similar to the diagram as shown in fig. 7. However, it illustrates a trend of staining of both, a cigarette paper and a tipping paper. The aerosol generating articles comprise 13 mg liquid, too and staining was monitored over a period of 8 weeks at temperatures of 22°C and 35°C. In the first group (graphs indicated by “BL”) the aerosol generating rod and the mouth piece and/or spacing subassembly are separated by a gap whereas the in the second group (graphs indicated by “OL”) the aerosol generating rod and the mouth piece and/or spacing subassembly are contacting each other at the boundary.
RECTIFIED SHEET (RULE 91) ISA/EP The diagram shows high percentages of staining for the group without gap (“OL”). Especially in the group without gap held at 35°C (graph 240), staining occurs after 8 weeks at more than 80 % of the aerosol generating articles of this group. When held at only 22°C (graph (230), the rate of staining was lower but still high. After 6 weeks nearly 40 % of the aerosol generating articles showed staining.
Staining also occurred in the group of aerosol generating articles with gap (graphs 130 and 140). However, the rate of aerosol generating articles with staining was lower and/or staining occurred later during the test. Surprisingly, the group held at 35°C (graph 140) showed less staining than the group stored at 22°C (graph 130). After 4 weeks the group stored at 35°C still don’t show any staining at all. Even after 8 weeks only less than 10 % of the aerosol generating articles of this group showed staining. For the group stored ad 22°C, no staining occurred within the first two weeks. After 4 and 6 weeks staining was moderate and could be detected at about 5 % of the aerosol generating articles. From week 6 to 8 the rate of stained aerosol generating articles in this group increased to more than 20 %.
Also, the diagram shown in fig. 9 is very similar to the diagram shown in fig. 7. Only staining of the cigarette paper was monitored. However, the amount of liquid was increased from 13 mg to 25 mg. The groups of aerosol generating articles with gap (graphs 150 and 160) as well as those without gap (graphs 250 and 260) were stored at 22°C (graphs 150 and 250) or 35°C (graphs 160 and 260).
The increased amount of liquid result in much higher rates of staining at least for the group of aerosol generating articles without gap (graphs 250 and 260). In the group stored at 35°C (graph 260) even after only 4 weeks about 90°c of the aerosol generating articles showed staining. After 8 weeks staining was monitored at nearly all aerosol generating articles of this group. When stored at 22°C after 4 weeks more than 60% of the aerosol generating articles showed staining and after 6 weeks even about 90 % showed staining.
Even with the high amount of liquid, staining was moderate for the groups aerosol generating articles with gap (graphs 150 and 160). When stored at 35°C (graph 160) staining was more or less neglectable until week 4. However, the rate of stained aerosol generating articles increased after 4 weeks and reached nearly 20 % after 8 weeks. For the group stored at only 22°C (graph 150), staining remains very low until week 6 and slightly increased at week 8.
RECTIFIED SHEET (RULE 91) ISA/EP Fig. 10 shows a diagram illustrating the cigarette paper and tipping paper stain trend for 4 groups of aerosol generating articles having 25 mg liquid. Similar to fig. 8 staining of the cigarette paper and the tipping paper was monitored. Similar to the other experiments, one group of aerosol generating articles with gap (graph 170) and without gap (graph 270) was stored at 22°C each and one group of aerosol generating articles with gap (graph 180) and without gap (graph 280) was stored at 35°C each.
Even after only one week, all of the aerosol generating articles without gap stored at 353°C (graph 280) were stained. From the group of aerosol generating articles without gap stored at 22°C (graph 270) nearly 100% showed staining in week 1. After 4 weeks all of the aerosol generating articles of this group (graph 270) were stained.
For the groups of aerosol generating articles with gap (graphs 170 and 180) the rate of stained products remains moderate for the first weeks. However, in the group stored at 35°C after 2 weeks already about 20 % of the products were stained. Until week 4 the rate of stained aerosol generating articles remains below 40 %. When stored longer, the rates increase and reach 100 % staining rate at week 8.
List of reference symbols
1 liquid,
5 gap,
10 paper, cigarette paper,
20 tipping paper,
30 mouth piece wrapper, spacing subassembly wrapper,
40 aerosol generating rod,
50 mouth piece, spacing subassembly,
60 boundary,
70 scale,
80 diffusion, direction, arrow
100 swash plate,
110 graph (staining of cigarette paper of aerosol generating articles with gap and
13 mg liquid stored at 22°C),
RECTIFIED SHEET (RULE 91) ISA/EP 120 graph (staining of cigarette paper of aerosol generating articles with gap and
13 mg liquid stored at 35°C),
130 graph (staining of cigarette paper and tipping paper of aerosol generating articles with gap and 13 mg liquid stored at 22°C),
140 graph (staining of cigarette paper and tipping paper of aerosol generating articles with gap and 13 mg liquid stored at 35°C),
150 graph (staining of cigarette paper of aerosol generating articles with gap and
25 mg liquid stored at 22°C),
160 graph (staining of cigarette paper of aerosol generating articles with gap and
25 mg liquid stored at 35°C),
170 graph (staining of cigarette paper and tipping paper of aerosol generating articles with gap and 25 mg liquid stored at 22°C),
180 graph (staining of cigarette paper and tipping paper of aerosol generating articles with gap and 25 mg liquid stored at 35°C),
210 graph (staining of cigarette paper of aerosol generating articles without gap and
13 mg liquid stored at 22°C),
220 graph (staining of cigarette paper of aerosol generating articles without gap and 13 mg liquid stored at 35°C),
230 graph (staining of cigarette paper and tipping paper of aerosol generating articles without gap and 13 mg liquid stored at 22°C),
240 graph (staining of cigarette paper and tipping paper of aerosol generating articles without gap and 13 mg liquid stored at 35°C),
250 graph (staining of cigarette paper of aerosol generating articles without gap and 25 mg liquid stored at 22°C),
260 graph (staining of cigarette paper of aerosol generating articles without gap and 25 mg liquid stored at 35°C),
270 graph (staining of cigarette paper and tipping paper of aerosol generating articles without gap and 25 mg liquid stored at 22°C),
280 graph (staining of cigarette paper and tipping paper of aerosol generating articles without gap and 25 mg liquid stored at 35°C), P pressure, direction, arrow.
RECTIFIED SHEET (RULE 91) ISA/EP

Claims

Claims An aerosol generating article comprising a mouth piece and/or spacing subassembly and an aerosol generating rod combined together with an outer wrapper; wherein the aerosol generating article extends along a longitudinal direction and the mouth piece and/or spacing subassembly is arranged along a flow direction of the aerosol downstream the aerosol generating rod, wherein the mouth piece and/or spacing subassembly comprises a mouth piece and/or spacing subassembly wrapper for wrapping at least partially the mouth piece and/or spacing subassembly, and the aerosol generating rod comprises an aerosol generating substrate and a substrate wrapper for at least partially wrapping the aerosol generating substrate, c h a r a c t e r i z e d i n t h a t the mouth piece and/or spacing subassembly wrapper and the substrate wrapper are distant one another along the longitudinal direction to form a gap a least equal to 0.05 mm and at most equal to 2 mm between the mouth piece and/or spacing subassembly wrapper and the substrate wrapper and wherein the outer wrapper overlaps with the gap. Aerosol generating article according to claim 1 , wherein the gap between the mouth piece and/or spacing subassembly wrapper and the substrate wrapper is of at least 0.1 mm. Aerosol generating article according to claim 1 or 2, wherein the gap between the mouth piece and/or cooling subassembly wrapper and the substrate wrapper is in a range of 0.1 to 1 mm, preferably in a range of 0.2 to 0.6 mm, most preferably in a range of 0.2 to 0.5 mm. Aerosol generating article according to any of claims 1 to 3, wherein the mouth piece and/or spacing subassembly and the substrate are distant one another along the longitudinal direction to form a gap, preferably the same gap as the gap between the mouth piece and/or spacing subassembly wrapper and the substrate wrapper. Aerosol generating article according to any of claims 1-4, wherein the mouth piece and/or spacing subassembly comprises a liquid substance or additive, preferably a
RECTIFIED SHEET (RULE 91) ISA/EP liquid selected from a group comprising: alcohols, fatty acid, fatty acid ester, polyether polymers, essential oil and combinations thereof. Aerosol generating article according to claim 5, wherein the aerosol generating substrate comprises soluble matter which is soluble in the liquid substance or additive. Aerosol generating article according to claim 5 or 6, wherein the liquid substance or additive is selected from a group comprising: polypropylene glycol, polypropylene glycol glyceryl ester, polybutylene glycol, diglycerin, sorbitan fatty acid ester, glycerin fatty ester, polyglycerin fatty ester, proplylene glycol fatty ester, polyethylene glycol, caprylglycol and combinations thereof. Aerosol generating article according to any of claims 1-7, wherein the mouth piece and/or spacing subassembly comprises a filter segment. Aerosol generating article according to claim 8, wherein the filter segment comprises a filtering material comprising paper or other natural cellulose fibre. Aerosol generating article according to any of claims 1-9, wherein the mouth piece and/or spacing subassembly wrapper comprises a liquid-proof, hydrophobic or oleophobic coating. Aerosol generating article according to any of claims 1-10 wherein the mouth and/or spacing subassembly comprises at least one tubular member, preferably a hollow paper tube or fibre tube, preferably positioned upstream of a filter segment. Aerosol generating article according to an of claims 1-11 , wherein it is a heat-not- burn article for being heated in an electrically aerosol generating device. Aerosol generating article according to an of claims 1-12, wherein the aerosol generating rod is located or suitable to be located in an oven of an electrically aerosol generating device. A method for manufacturing an aerosol generating article preferably an aerosol generating article according to any of claims 1-13, comprising the steps of: providing a first component, comprising two mouth pieces and/or spacing
RECTIFIED SHEET (RULE 91) ISA/EP subassemblies, each comprising a mouth piece and/or spacing subassembly wrapper, wherein both are arranged on opposite sides of the first component, arranging an aerosol generating rod on each free end of the mouth pieces and/or spacing subassemblies, wherein each aerosol generating rod comprises an aerosol generating substrate and a substrate wrapper, forming a gap of at least 0.05 mm and at most 2mm between each mouth piece and/or spacing subassembly and each aerosol generating rod, and combining a mouth piece and/or spacing subassembly with a aerosol generating rod with an outer wrapper, wherein the outer wrapper overlaps with the gap between a mouth and/or spacing subassembly and an aerosol generating rod. Method according to claim 14, further comprising the step of separating the mouth pieces and/or cooling subassemblies of the first component wherein preferably a length of the gap is adjusted by a swashplate.
RECTIFIED SHEET (RULE 91) ISA/EP
PCT/EP2023/081480 2022-11-11 2023-11-10 An aerosol-generating article an method for manufacturing an aerosol-generating article WO2024100273A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP22206898.3 2022-11-11
EP22206898 2022-11-11

Publications (1)

Publication Number Publication Date
WO2024100273A1 true WO2024100273A1 (en) 2024-05-16

Family

ID=84332212

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2023/081480 WO2024100273A1 (en) 2022-11-11 2023-11-10 An aerosol-generating article an method for manufacturing an aerosol-generating article

Country Status (1)

Country Link
WO (1) WO2024100273A1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001070054A1 (en) * 2000-03-23 2001-09-27 Philip Morris Products Inc. Electrical smoking system and method
WO2012012152A1 (en) * 2010-06-30 2012-01-26 R. J. Reynolds Tobacco Company Degradable adhesive compositions for smoking articles
WO2013160671A1 (en) * 2012-04-25 2013-10-31 British American Tobacco (Investments) Limited Smoking articles
US20140305455A1 (en) * 2013-04-11 2014-10-16 R. J. Reynolds Tobacco Company Smoking articles with nanocellulose barrier
WO2015008253A1 (en) * 2013-07-19 2015-01-22 Philip Morris Products, S.A. Hydrophobic paper

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001070054A1 (en) * 2000-03-23 2001-09-27 Philip Morris Products Inc. Electrical smoking system and method
WO2012012152A1 (en) * 2010-06-30 2012-01-26 R. J. Reynolds Tobacco Company Degradable adhesive compositions for smoking articles
WO2013160671A1 (en) * 2012-04-25 2013-10-31 British American Tobacco (Investments) Limited Smoking articles
US20140305455A1 (en) * 2013-04-11 2014-10-16 R. J. Reynolds Tobacco Company Smoking articles with nanocellulose barrier
WO2015008253A1 (en) * 2013-07-19 2015-01-22 Philip Morris Products, S.A. Hydrophobic paper

Similar Documents

Publication Publication Date Title
JP7056997B2 (en) Aerosol forming rod manufacturing method and manufacturing equipment
EP4356764A2 (en) Aerosol generating article and aerosol generating device comprising same
US20230010782A1 (en) Method of manufacturing an amorphous solid comprising an aerosol-former material
EP3881699A1 (en) Non-combustion heated smoking article and non-combustion heated smoking system
EP3881687A1 (en) Filter segment, non-combustion heating type smoking article and non-combustion heating type smoking system
WO2020213144A1 (en) Heat-not-burn tobacco product and electrically heated tobacco product
EP3949772A1 (en) Cooling segment, non-combustion heating type flavor inhalation article, method for using non-combustion heating type flavor inhalation article, and non-combustion heating type flavor inhalation system
KR102386078B1 (en) Reconstituted tobacco sheet comprising clove by-products and a smoking article including the same
KR20240026904A (en) Aerosol-generating composition comprising nicotine and acid or nicotine salt
TW202037284A (en) Non-combustion heating type smoking article and non-combustion heating type smoking system
KR102525020B1 (en) Tobacco granules and manufacturing method thereof, and a smoking article including the tobacco granules
EP4223506A1 (en) Tip paper for tobacco products with capsule filters and tobacco products
WO2020115897A1 (en) Non-combustible heating-type smoking article, electric heating-type smoking system, and method for producing non-combustible heating-type smoking article
KR20200017761A (en) Method and apparatus for making a rod of aerosol-forming substrate
EP3748079B1 (en) Packing material for coupling multiple segments constituting smoking product
WO2024100273A1 (en) An aerosol-generating article an method for manufacturing an aerosol-generating article
KR20240116786A (en) Components for delivery systems and methods and apparatus for manufacturing components for delivery systems
EP3873250B1 (en) Smoking substitute consumable
EP4164421A1 (en) Cigarette paper - tobacco sheet lamination
KR20230051183A (en) aerosol generation
RU2777962C1 (en) Smoking product with burning-free heating, smoking system with electric heating, and method for manufacturing a smoking article with burning-free heating
KR102693877B1 (en) Smoking article comprising aroma tobacco sheet
KR20230126051A (en) Reconsituted tabacco improved swellability and manufacturing method thereof
KR20240053036A (en) Aerosol-generating material comprising chitosan and additional binders
KR20230134654A (en) Smoking article and aerosol-generating systems comprising thereof

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 23804689

Country of ref document: EP

Kind code of ref document: A1