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WO2025172173A1 - Article de génération d'aérosol à orientation transversale des fibres dans l'enveloppe - Google Patents

Article de génération d'aérosol à orientation transversale des fibres dans l'enveloppe

Info

Publication number
WO2025172173A1
WO2025172173A1 PCT/EP2025/053193 EP2025053193W WO2025172173A1 WO 2025172173 A1 WO2025172173 A1 WO 2025172173A1 EP 2025053193 W EP2025053193 W EP 2025053193W WO 2025172173 A1 WO2025172173 A1 WO 2025172173A1
Authority
WO
WIPO (PCT)
Prior art keywords
aerosol
generating article
wrapping paper
tensile strength
paper
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/EP2025/053193
Other languages
English (en)
Inventor
Alexandre Camus
Gaëtan Antony COUDERC
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Philip Morris Products SA
Original Assignee
Philip Morris Products 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 Philip Morris Products SA filed Critical Philip Morris Products SA
Publication of WO2025172173A1 publication Critical patent/WO2025172173A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • A24D1/02—Cigars; Cigarettes with special covers
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/10—Packing paper

Definitions

  • the present invention relates to an aerosol-generating article.
  • the invention further relates to an aerosol-generating system comprising the aerosol-generating article and an aerosol-generating device.
  • the invention further relates to a method of wrapping an aerosolgenerating article.
  • Aerosol-generating device for generating an inhalable vapor.
  • Such devices may heat aerosol-forming substrate to a temperature at which one or more components of the aerosol-forming substrate are volatilised without burning the aerosolforming substrate.
  • Aerosol-forming substrate may be provided as part of an aerosolgenerating article.
  • the aerosol-generating article may have a rod shape for insertion of the aerosol-generating article into a cavity, such as a heating chamber, of the aerosol-generating device.
  • a heating element may be arranged in or around the heating chamber for heating the aerosol-forming substrate once the aerosol-generating article is inserted into the heating chamber of the aerosol-generating device.
  • the aerosol-generating article may partly stick out of the heating chamber. When a user accidentally laterally contacts the aerosol-generating article with sufficient force, the aerosol-generating article may break. This may make it cumbersome to remove the remaining parts of the aerosol generating article from the heating chamber.
  • an aerosol-generating article comprising a wrapping paper.
  • the wrapping paper is fibrous.
  • the fibers of the wrapping paper are aligned perpendicular to a longitudinal axis of the aerosol-generating article.
  • a cross direction tensile strength of the wrapping paper is at least 15 N/15 mm.
  • an aerosolgenerating article comprising a wrapping paper.
  • the wrapping paper may be fibrous.
  • the fibers of the wrapping paper may be aligned perpendicular to a longitudinal axis of the aerosol-generating article.
  • a cross direction tensile strength of the wrapping paper may be at least 15 N/15 mm.
  • Providing the wrapping paper with a high cross direction tensile strength of at least 15 N/15 mm facilitates that breakage of the aerosol-generating article is prevented in the area which is surrounded by the wrapping paper when a lateral force is applied to the aerosol-generating article.
  • the aerosol-generating article may break.
  • a user may accidentally brush the part of the aerosol-generating article that sticks out of the cavity of the aerosolgenerating device against an object. The breaking of the aerosol-generating article may happen inside of the cavity.
  • the breaking point of the aerosol-generating article may be moved out of the cavity of the aerosol-generating device so that the aerosol-generating article may either not break or break in a desired position outside of the cavity of the aerosol generating device when the aerosol-generating arcs article is received in the cavity of the aerosol-generating device.
  • the cross direction tensile strength of the wrapping paper may be measured with the test method ISO 1924-2:2008.
  • the tensile strength may be measured with the test method ISO 1924-2:2008.
  • the cross direction tensile strength of the wrapping paper may be at least 18 N/15 mm, preferably at least 20 N/15 mm, more preferably at least 22 N/15 mm, more preferably at least 24 N/15 mm, more preferably at least 26 N/15 mm, most preferably at least 28 N/15 mm.
  • the cross direction tensile strength of the wrapping paper may be between 18 N/15 mm and 38 N/15 mm, preferably between 20 N/15 mm and 36 N/15 mm, more preferably between 22 N/15 mm and 34 N/15 mm, more preferably between 24 N/15 mm and 32 N/15 mm, more preferably between 26 N/15 mm and 30 N/15 mm, most preferably 28 N/15 mm.
  • Providing a high cross direction tensile strength may further prevent the aerosolgenerating article from breaking when a lateral force is applied to the aerosol-generating article or may further push the breaking point towards a proximal end of the aerosolgenerating article when a lateral force is applied to the aerosol-generating article.
  • the basis weight of the wrapping paper may be at least 30 gsm, preferably at least 35 gsm, more preferably at least 40 gsm, more preferably at least 42 gsm, more preferably at least 45 gsm, more preferably at least 47 gsm, most preferably at least 50 gsm.
  • the basis weight of the wrapping paper may be between 30 gsm and 70 gsm, preferably between 33 gsm and 67 gsm, more preferably between 36 gsm and 64 gsm, more preferably between 39 gsm and 61 gsm, more preferably between 42 gsm and 58 gsm, more preferably between 45 gsm and 55 gsm, more preferably between 48 gsm and 52 gsm, most preferably 50 gsm.
  • Providing the wrapping paper with a higher basis weight in comparison with conventional wrapping papers may particularly improve the cross direction tensile strength of the wrapping paper.
  • the thickness of the wrapping paper may be at least 50 pm, preferably at least 55 pm, more preferably at least 60 pm.
  • Providing the wrapping paper with a larger thickness in comparison with conventional wrapping papers may particularly improve the cross direction tensile strength of the wrapping paper.
  • the fibers of the wrapping paper may be aligned in a machine direction of the wrapping paper.
  • a cellulosic pulp with a high moisture content may be dried on a conveying belt.
  • the fibers within the cellulosic pulp may be arranged in the traveling direction of the conveying belt. This direction may be denoted as the machine direction.
  • the fibers of the paper may thus predominantly have an orientation in this direction.
  • the fibers of the final wrapping paper may have an anisotropic orientation and may be predominantly aligned in one direction (the machine direction during manufacturing).
  • the tensile strength is typically higher in the machine direction than it is in the cross direction perpendicular to the machine direction.
  • the tensile strength in the machine direction can be higher by a factor of 2 in comparison with the cross direction tensile strength.
  • the machine direction of the wrapping paper may be perpendicular to the longitudinal axis of the aerosol-generating article.
  • the machine direction of the wrapping paper may be in a tangential direction depending on the applied wrapping technique.
  • a wrapping technique may be particularly preferred in which the machine direction of the wrapping paper is tangentially around the aerosol-generating article.
  • other, less desired wrapping techniques may lead to the machine direction of the wrapping paper being parallel to the longitudinal axis of the aerosol-generating article.
  • the machine direction tensile strength of the wrapping paper may be predominantly in the tangential direction around the aerosol-generating article.
  • the wrapping paper is weaker in the longitudinal direction (cross direction tensile strength) in comparison with the tangential direction (machine direction tensile strength). This in turn may lead to the breaking of the aerosol-generating article when a lateral force is applied to the aerosol-generating article.
  • cross direction tensile strength improves the behaviour of the aerosolgenerating article when it comes to a potential breakage of the aerosol-generating article upon application of a lateral force against the aerosol-generating article.
  • the cross direction of the wrapping paper may be perpendicular to the machine direction of the wrapping paper.
  • the cross direction of the wrapping paper may be parallel to the longitudinal axis of the aerosol-generating article.
  • a machine direction tensile strength of the wrapping paper may be at least 35 N/15 mm, more preferably at least 38 N/15 mm, preferably at least 40 N/15 mm, more preferably at least 42 N/15 mm, more preferably at least 45 N/15 mm, more preferably at least 47 N/15 mm, most preferably at least 50 N/15 mm.
  • the machine direction tensile strength of the wrapping paper may be between 35 N/15 mm and 65 N/15 mm, preferably between 38 N/15 mm and 62 N/15 mm, more preferably between 41 N/15 mm and 59 N/15 mm, more preferably between 44 N/15 mm and 56 N/15 mm, more preferably between 47 N/15 mm and 53 N/15 mm, most preferably 50 N/15 mm.
  • the wrapping paper may be arranged around one or more of the following elements of the aerosol-generating article: a front plug, a substrate portion, and a cooling section.
  • the aerosol-generating article preferably comprises the following elements: the front plug, the substrate portion, the cooling section and a mouthpiece filter.
  • the wrapping paper is wrapped around the front plug, the substrate portion and the cooling section.
  • the wrapping paper is preferably not wrapped around the mouthpiece filter. This arrangement beneficially leads to a potential breakage of the aerosol-generating article happening in the area of the mouthpiece filter or in the area of the transition between the mouthpiece filter and the cooling section.
  • the aerosol-generating article preferably has a length and the cavity of the aerosol-generating device preferably has a depth such that the mouthpiece filter and at least parts of the cooling section of the aerosol-generating article protrude from the cavity of the aerosol-generating device when the aerosol-generating article is received in the cavity of the aerosol-generating device. This means that the breakage point of the aerosol-generating article is outside of the cavity due to the beneficial arrangement of the wrapping paper being wrapped around the front plug, the substrate portion and the cooling portion and not being wrapped around the mouthpiece filter.
  • the resistance of the aerosol-generating article to breakage when a lateral force is applied to the aerosol-generating article is weakest in this area.
  • the aerosol-generating article breaks at the mouthpiece filter or at the transition between the mouthpiece filter and the cooling section.
  • the cooling section may comprise one or both of a hollow acetate tube and a fine hollow acetate tube.
  • the hollow acetate tube may have a hollow cylindrical structure.
  • the fine hollow acetate tube may have a hollow cylindrical structure.
  • the strength of the sidewall of the hollow acetate tube may be larger than the strength of the sidewall of the fine hollow acetate tube.
  • One or both of the hollow acetate tube and the fine hollow acetate tube may comprise perforations in the sidewall in order to allow ambient air to be drawn into the aerosolgenerating article.
  • the hollow acetate tube is free of perforations and the fine hollow acetate tube comprises perforations.
  • the perforations in the fine hollow acetate tube are preferably arranged outside of the cavity such that ambient air can be drawn into the aerosol-generating article through the perforations and mix with air being drawn through the aerosol-generating device and into the distal end face of the aerosol-generating article.
  • the substrate portion is heated by a heating element of the aerosol-generating device such that the aerosol-forming substrate of the substrate portion is vaporized and the volatilized substrate is entrained in the airflow through the substrate portion.
  • the inhalable aerosol with an optimized droplet size is created for inhalation by a user proximal (or downstream) of the mouthpiece filter.
  • the cooling section comprises both of the hollow acetate tube and the fine hollow acetate tube. More preferably, the hollow acetate tube is arranged distal from the fine hollow acetate tube.
  • the aerosol-generating article preferably comprises, from a distal end to a proximal end, the front plug, the substrate portion, the hollow acetate tube, the fine hollow acetate tube and the mouthpiece filter.
  • the wrapping paper is wrapped around the front plug, the substrate portion, the hollow acetate tube and the fine hollow acetate tube.
  • the wrapping paper is not wrapped around the mouthpiece filter.
  • the wrapping paper may be arranged around all of: the front plug, the substrate portion, and the cooling section.
  • the aerosol-generating article may comprise a mouthpiece filter.
  • the wrapping paper may be not arranged around the mouthpiece filter.
  • the aerosol-generating article further may comprise a tipping paper.
  • the tipping paper may be arranged at least partially around the cooling section and at least partially around the mouthpiece filter.
  • the tipping paper is arranged around the mouthpiece filter as well as the fine hollow acetate tube of the cooling section.
  • the tipping paper is preferably not arranged around other components of the aerosol-generating article.
  • the tipping paper is preferably not arranged around any of the front plug, the substrate portion and the hollow acetate tube.
  • the tipping paper may overlap with the wrapping paper.
  • the tipping paper may overlap with the wrapping paper around the fine hollow acetate tube. More generally, the tipping paper may overlap with the wrapping paper at least partly in the area of the cooling section of the aerosol-generating article.
  • the weakest breaking point of the aerosol-generating article when a lateral force is applied to the aerosol-generating article may preferably be between the mouthpiece filter and the cooling section. More specifically, the weakest breaking point may be between the fine hollow acetate tube and the mouthpiece further.
  • the wrapping paper is not wrapped around the mouthpiece filter of the aerosol-generating article.
  • the weakest breaking point may be proximal from the wrapping paper.
  • the weakest breaking point may be directly abutting and proximal from the wrapping paper.
  • the tipping paper may be wrapped around components of the aerosol-generating article, particularly elements such as the mouthpiece filter and additionally the element distal of the mouthpiece filter such as a cooling section, more specifically a hollow acetate tube, even more specifically a fine hollow acetate tube.
  • the machine direction of the tipping paper may be in a tangential direction depending on the applied wrapping technique.
  • a wrapping technique may be particularly preferred in which the machine direction of the tipping paper is tangentially around the aerosol-generating article.
  • other, less desired wrapping techniques may lead to the machine direction of the tipping paper being parallel to the longitudinal axis of the aerosol-generating article.
  • the machine direction tensile strength of the tipping paper may be predominantly in the tangential direction around the aerosol-generating article.
  • the tipping paper is weaker in the longitudinal direction (cross direction tensile strength) in comparison with the tangential direction (machine direction tensile strength).
  • the tipping paper may be weaker than the wrapping paper.
  • a cross direction tensile strength of the tipping paper may be similar or, preferably, lower, than a cross direction tensile strength of the wrapping paper.
  • a machine direction tensile strength of the tipping paper may be similar or, preferably, lower, than a machine direction parallel strength of the wrapping paper.
  • the tipping paper may have a basis weight lower than the basis weight of the wrapping paper.
  • the basis weight of the tipping paper may be 60 % to 95 % of the basis weight of the wrapping paper, preferably 65 % to 90 % of the basis weight of the wrapping paper, more preferably 70 % to 85 % of the basis weight of the wrapping paper, more preferably 75 % to 83 % of the basis weight of the wrapping paper, most preferably 80 % of the basis weight of the wrapping paper.
  • Providing the tipping paper with a lower basis weight than the wrapping paper may lead to a lower tensile strength, particularly in a cross direction, of the tipping paper in comparison with the wrapping paper.
  • the tipping paper may have a thickness lower than the thickness of the wrapping paper.
  • the thickness of the tipping paper may be 55 % to 95 % of the thickness of the wrapping paper, preferably 60 % to 90 % of the thickness of the wrapping paper, more preferably 65 % to 85 % of the thickness of the wrapping paper, more preferably 70 % to 80 % of the thickness of the wrapping paper, most preferably 75 % of the thickness of the wrapping paper.
  • Providing the tipping paper with a lower basis weight than the wrapping paper may lead to a lower tensile strength, particularly in a cross direction, of the tipping paper in comparison with the wrapping paper.
  • the tipping paper may have a cross direction tensile strength lower than the cross direction tensile strength of the wrapping paper.
  • the cross direction tensile strength of the tipping paper may be 30 % to 70 % of the cross direction tensile strength of the wrapping paper, preferably 35 % to 65 % of the cross direction tensile strength of the wrapping paper, more preferably 40 % to 60 % of the cross direction tensile strength of the wrapping paper, more preferably 45 % to 55 % of the cross direction tensile strength of the wrapping paper, more preferably 50 % of the cross direction tensile strength of the wrapping paper.
  • the tipping paper may have a machine direction tensile strength lower than the machine direction tensile strength of the wrapping paper.
  • the machine direction tensile strength of the tipping paper may be 30 % to 70 % of the machine direction tensile strength of the wrapping paper, preferably 35 % to 65 % of the machine direction tensile strength of the wrapping paper, more preferably 40 % to 60 % of the machine direction tensile strength of the wrapping paper, more preferably 45 % to 55 % of the machine direction tensile strength of the wrapping paper, more preferably 50 % of the machine direction tensile strength of the wrapping paper.
  • the aerosol-generating article may comprise, from distal end to proximal end and abutting each other: the front plug, the substrate portion, the hollow acetate tube, the cooling section, and the mouthpiece filter.
  • the cooling section preferably comprises the hollow acetate tube and the fine hollow acetate tube.
  • the proximal part of the aerosol-generating article may refer to a downstream part of the aerosol-generating article.
  • the proximal part of the aerosol-generating article may refer to a portion of the aerosol-generating article for which a distal end of the portion is arranged closer to the proximal end of the aerosol-generating article than to the distal end of the aerosol-generating article.
  • the proximal part of the aerosol-generating article may refer to a portion of the aerosol-generating article extending about 45 percent of the total length of the aerosol-generating article from the proximal end of the aerosol-generating article.
  • the tipping paper at least partially overlapping the wrapping paper at the proximal part of the aerosol-generating article reinforces the aerosol-generating article. The likelihood of breakage at this location is reduced.
  • the proximal part of the aerosol-generating article may refer to a portion of the aerosol-generating article extending in a distal direction between a distal end of the mouthpiece filter and a cross-sectional plane arranged at about 45 percent of the total length of the aerosol-generating article with reference to the proximal end of the aerosol-generating article.
  • the proximal part of the aerosol-generating article excludes the mouthpiece filter.
  • the tipping paper and the wrapping paper do not overlap around a portion of the mouthpiece filter.
  • the wrapping paper is not arranged around the mouthpiece filter.
  • the invention further relates to an aerosol-generating device comprising a cavity for at least partly receiving the aerosol-generating article as described herein.
  • the cavity may be configured to fully receive the front plug and the substrate portion of the aerosol-generating article and at least partly receive the cooling section. Particularly preferred, the cavity may be configured to fully receive the front plug, the substrate portion and the hollow acetate tube of the cooling section. The cavity may further be configured to partly receive the fine hollow acetate tube of the cooling section. The proximal part of the fine hollow acetate tube as well as the mouthpiece filter may stick out of the cavity when the aerosol-generating article is received in the cavity.
  • the invention further relates to an aerosol-generating system comprising the aerosolgenerating article as described herein and the aerosol-generating device as described herein.
  • the invention further relates to a method of wrapping an aerosol-generating article, comprising: wrapping a wrapping paper at least partly around the aerosol-generating article such that fibers of the wrapping paper may be aligned perpendicular to a longitudinal axis of the aerosol-generating article, wherein a cross direction tensile strength of the wrapping paper may be at least 15 N/15 mm.
  • proximal As used herein, the terms ‘proximal’, ‘distal’, ‘downstream’ and ‘upstream’ are used to describe the relative positions of components, or portions of components, of the aerosolgenerating device in relation to the direction in which a user draws on the aerosol-generating device during use thereof.
  • the aerosol-generating device may comprise a mouth end through which in use an aerosol exits the aerosol-generating device and is delivered to a user.
  • the mouth end may also be referred to as the proximal end.
  • a user draws on the proximal or mouth end of the aerosol-generating device in order to inhale an aerosol generated by the aerosolgenerating device.
  • a user may directly draw on an aerosol-generating article inserted into an opening at the proximal end of the aerosol-generating device.
  • the opening at the proximal end may be an opening of the cavity.
  • the cavity may be configured to receive the aerosol-generating article.
  • the aerosol-generating device comprises a distal end opposed to the proximal or mouth end.
  • the proximal or mouth end of the aerosol-generating device may also be referred to as the downstream end and the distal end of the aerosolgenerating device may also be referred to as the upstream end.
  • Components, or portions of components, of the aerosol-generating device may be described as being upstream or downstream of one another based on their relative positions between the proximal, downstream or mouth end and the distal or upstream end of the aerosol-generating device.
  • an ‘aerosol-generating device’ relates to a device that interacts with an aerosol-forming substrate to generate an aerosol.
  • the aerosol-forming substrate may be part of an aerosol-generating article, for example part of a smoking article.
  • An aerosolgenerating device may be a smoking device that interacts with an aerosol-forming substrate of an aerosol-generating article to generate an aerosol that is directly inhalable into a user’s lungs thorough the user's mouth.
  • An aerosol-generating device may be a holder.
  • the device may be an electrically heated smoking device.
  • the aerosol-generating device may comprise a housing, electric circuitry, a power supply, a heating chamber and a heating element.
  • the term ‘smoking’ with reference to a device, article, system, substrate, or otherwise does not refer to conventional smoking in which an aerosol-forming substrate is fully or at least partially combusted.
  • the aerosol-generating device of the present invention is arranged to heat the aerosol-forming substrate to a temperature below a combustion temperature of the aerosol-forming substrate, but at or above a temperature at which one or more volatile compounds of the aerosolforming substrate are released to form an inhalable aerosol.
  • the aerosol-generating device may comprise electric circuitry.
  • the electric circuitry may comprise a microprocessor, which may be a programmable microprocessor.
  • the microprocessor may be part of a controller.
  • the electric circuitry may comprise further electronic components.
  • the electric circuitry may be configured to regulate a supply of power to the heating element. Power may be supplied to the heating element continuously following activation of the aerosol-generating device or may be supplied intermittently, such as on a puff-by-puff basis. The power may be supplied to the heating element in the form of pulses of electrical current.
  • the electric circuitry may be configured to monitor the electrical resistance of the heating element, and preferably to control the supply of power to the heating element dependent on the electrical resistance of the heating element.
  • the aerosol-generating device may comprise a power supply, typically a battery, within a main body of the aerosol-generating device.
  • the power supply is a Lithium-ion battery.
  • the power supply may be a Nickel-metal hydride battery, a Nickel cadmium battery, or a Lithium based battery, for example a Lithium-Cobalt, a Lithium-lron-Phosphate, Lithium Titanate or a Lithium-Polymer battery.
  • the power supply may be another form of charge storage device such as a capacitor.
  • the power supply may require recharging and may have a capacity that enables to store enough energy for one or more usage experiences; for example, the power supply may have sufficient capacity to continuously generate aerosol for a period of around six minutes or for a period of a multiple of six minutes. In another example, the power supply may have sufficient capacity to provide a predetermined number of puffs or discrete activations of the heating element.
  • the cavity of the aerosol-generating device may have an open end into which the aerosol-generating article is inserted.
  • the open end may be a proximal end.
  • the cavity may have a closed end opposite the open end.
  • the closed end may be the base of the cavity.
  • the closed end may be closed except for the provision of air apertures arranged in the base.
  • the base of the cavity may be flat.
  • the base of the cavity may be circular.
  • the base of the cavity may be arranged upstream of the cavity.
  • the open end may be arranged downstream of the cavity.
  • the cavity may have an elongate extension.
  • the cavity may have a longitudinal central axis.
  • a longitudinal direction may be the direction extending between the open and closed ends along the longitudinal central axis.
  • the longitudinal central axis of the cavity may be parallel to the longitudinal axis of the aerosol-generating device.
  • the cavity may be configured as a heating chamber.
  • the cavity may have a cylindrical shape.
  • the cavity may have a hollow cylindrical shape.
  • the cavity may have a shape corresponding to the shape of the aerosol-generating article to be received in the cavity.
  • the cavity may have a circular cross-section.
  • the cavity may have an elliptical or rectangular cross-section.
  • the cavity may have an inner diameter corresponding to the outer diameter of the aerosol-generating article.
  • An airflow channel may run through the cavity. Ambient air may be drawn into the aerosol-generating device, into the cavity and towards the user through the airflow channel. Downstream of the cavity, a mouthpiece may be arranged or a user may directly draw on the aerosol-generating article. The airflow channel may extend through the mouthpiece.
  • the heating element may comprise an electrically resistive material.
  • Suitable electrically resistive materials include but are not limited to: semiconductors such as doped ceramics, electrically "conductive" ceramics (such as, for example, molybdenum disilicide), carbon, graphite, metals, metal alloys and composite materials made of a ceramic material and a metallic material.
  • Such composite materials may comprise doped or undoped ceramics.
  • suitable doped ceramics include doped silicon carbides.
  • suitable metals include titanium, zirconium, tantalum platinum, gold and silver.
  • suitable metal alloys include stainless steel, nickel-, cobalt-, chromium-, aluminium- titanium- zirconium-, hafnium-, niobium-, molybdenum-, tantalum-, tungsten-, tin-, gallium-, manganese-, gold- and iron- containing alloys, and super-alloys based on nickel, iron, cobalt, stainless steel, Timetai® and iron-manganese-aluminium based alloys.
  • the electrically resistive material may optionally be embedded in, encapsulated or coated with an insulating material or vice-versa, depending on the kinetics of energy transfer and the external physicochemical properties required.
  • the heating element may be part of an aerosol-generating device.
  • the aerosol-generating device may comprise an internal heating element or an external heating element, or both internal and external heating elements, where "internal” and “external” refer to the aerosol-forming substrate.
  • An internal heating element may take any suitable form.
  • an internal heating element may take the form of a heating blade.
  • the internal heater may take the form of a casing or substrate having different electro-conductive portions, or an electrically resistive metallic tube.
  • the internal heating element may be one or more heating needles or rods that run through the center of the aerosolforming substrate.
  • the internal heating element may be deposited in or on a rigid carrier material.
  • the electrically resistive heating element may be formed using a metal having a defined relationship between temperature and resistivity.
  • the metal may be formed as a track on a suitable insulating material, such as ceramic material, and then sandwiched in another insulating material, such as a glass. Heaters formed in this manner may be used to both heat and monitor the temperature of the heating elements during operation.
  • An external heating element may take any suitable form.
  • an external heating element may take the form of one or more flexible heating foils on a dielectric substrate, such as polyimide.
  • the flexible heating foils can be shaped to conform to the perimeter of the substrate receiving cavity.
  • an external heating element may take the form of a metallic grid or grids, a flexible printed circuit board, a molded interconnect device (MID), ceramic heater, flexible carbon fibre heater or may be formed using a coating technique, such as plasma vapour deposition, on a suitable shaped substrate.
  • An external heating element may also be formed using a metal having a defined relationship between temperature and resistivity. In such an exemplary device, the metal may be formed as a track between two layers of suitable insulating materials. An external heating element formed in this manner may be used to both heat and monitor the temperature of the external heating element during operation.
  • the heating element may be configured as an induction heating element.
  • the induction heating element may comprise an induction coil and a susceptor.
  • a susceptor is a material that is capable of generating heat, when penetrated by an alternating magnetic field. When located in an alternating magnetic field. If the susceptor is conductive, then typically eddy currents are induced by the alternating magnetic field. If the susceptor is magnetic, then typically another effect that contributes to the heating is commonly referred to hysteresis losses. Hysteresis losses occur mainly due to the movement of the magnetic domain blocks within the susceptor, because the magnetic orientation of these will align with the magnetic induction field, which alternates.
  • hysteresis losses Another effect contributing to the hysteresis loss is when the magnetic domains will grow or shrink within the susceptor.
  • the susceptor is both magnetic and electrically conductive, both hysteresis losses and the generation of eddy currents will contribute to the heating of the susceptor.
  • the susceptor is magnetic, but not conductive, then hysteresis losses will be the only means by which the susceptor will heat, when penetrated by an alternating magnetic field.
  • the susceptor may be electrically conductive or magnetic or both electrically conductive and magnetic.
  • An alternating magnetic field generated by one or several induction coils heat the susceptor, which then transfers the heat to the aerosol-forming substrate, such that an aerosol is formed.
  • the heat transfer may be mainly by conduction of heat. Such a transfer of heat is best, if the susceptor is in close thermal contact with the aerosol-forming substrate.
  • an aerosol-generating article refers to an article comprising an aerosol-forming substrate that is capable of releasing volatile compounds that can form an aerosol.
  • an aerosol-generating article may be a smoking article that generates an aerosol that is directly inhalable into a user’s lungs through the user's mouth.
  • An aerosolgenerating article may be disposable.
  • aerosol-forming substrate relates to a substrate capable of releasing one or more volatile compounds that can form an aerosol. Such volatile compounds may be released by heating the aerosol-forming substrate.
  • An aerosol-forming substrate may conveniently be part of an aerosol-generating article or smoking article.
  • the aerosol-forming substrate may be a solid aerosol-forming substrate.
  • the aerosolforming substrate may comprise both solid and liquid components.
  • the aerosol-forming substrate may comprise a tobacco-containing material containing volatile tobacco flavour compounds which are released from the substrate upon heating.
  • the aerosol-forming substrate may comprise a non-tobacco material.
  • the aerosol-forming substrate may comprise an aerosol former that facilitates the formation of a dense and stable aerosol. Examples of suitable aerosol formers are glycerine and propylene glycol.
  • the aerosol-generating substrate preferably comprises homogenised tobacco material, an aerosol-former and water.
  • Providing homogenised tobacco material may improve aerosol generation, the nicotine content and the flavour profile of the aerosol generated during heating of the aerosol-generating article.
  • the process of making homogenised tobacco involves grinding tobacco leaf, which more effectively enables the release of nicotine and flavours upon heating.
  • Example 1 An aerosol-generating article comprising a wrapping paper, wherein the wrapping paper is fibrous, wherein the fibers of the wrapping paper are aligned perpendicular to a longitudinal axis of the aerosol-generating article, and wherein a cross direction tensile strength of the wrapping paper is at least 15 N/15 mm.
  • Example 2 The aerosol-generating article according to example 1 , wherein the cross direction tensile strength of the wrapping paper is at least 18 N/15 mm, preferably at least 20 N/15 mm , more preferably at least 22 N/15 mm, more preferably at least 24 N/15 mm, more preferably at least 26 N/15 mm, most preferably at least 28 N/15.
  • Example 3 The aerosol-generating article according to any of the preceding examples, wherein the basis weight of the wrapping paper is at least 30 gsm, preferably at least 35 gsm, more preferably at least 40 gsm, more preferably at least 42 gsm, more preferably at least 45 gsm, more preferably at least 47 gsm, most preferably at least 50 gsm.
  • Example 4 The aerosol-generating article according to any of the preceding examples, wherein the basis weight of the wrapping paper is between 30 gsm and 70 gsm, preferably between 33 gsm and 67 gsm, more preferably between 36 gsm and 64 gsm, more preferably between 39 gsm and 61 gsm, more preferably between 42 gsm and 58 gsm, more preferably between 45 gsm and 55 gsm, more preferably between 48 gsm and 52 gsm, most preferably 50 gsm.
  • the basis weight of the wrapping paper is between 30 gsm and 70 gsm, preferably between 33 gsm and 67 gsm, more preferably between 36 gsm and 64 gsm, more preferably between 39 gsm and 61 gsm, more preferably between 42 gsm and 58 gsm, more preferably between 45 gsm and 55 gsm, more
  • Example 5 The aerosol-generating article according to any of the preceding examples, wherein the thickness of the wrapping paper is at least 50 pm, preferably at least 55 pm, more preferably at least 60 pm.
  • Example 6 The aerosol-generating article according to any of the preceding examples, wherein the thickness of the wrapping paper is between 50 pm and 70 pm, preferably between 55 pm and 65 pm, more preferably 60 pm.
  • Example 7 The aerosol-generating article according to any of the preceding examples, wherein the fibers of the wrapping paper are aligned in a machine direction of the wrapping paper.
  • Example 8 The aerosol-generating article according to example 7, wherein the machine direction of the wrapping paper is perpendicular to the longitudinal axis of the aerosol-generating article.
  • Example 9 The aerosol-generating article according to any of the preceding examples, wherein the cross direction of the wrapping paper is perpendicular to the machine direction of the wrapping paper.
  • Example 10 The aerosol-generating article according to any of the preceding examples, wherein the cross direction of the wrapping paper is parallel to the longitudinal axis of the aerosol-generating article.
  • Example 13 The aerosol-generating article according to example 12, wherein the cooling section comprises one or both of a hollow acetate tube and a fine hollow acetate tube.
  • Example 14 The aerosol-generating article according to example 12 or 13, wherein the wrapping paper is arranged around all of: the front plug, the substrate portion, and the cooling section.
  • Example 15 The aerosol-generating article according to any of the preceding examples, wherein the aerosol-generating article comprises a mouthpiece filter.
  • Example 16 The aerosol-generating article according to example 15, wherein the wrapping paper is not arranged around the mouthpiece filter.
  • Example 17 The aerosol-generating article according to any of the preceding examples, wherein the aerosol-generating article further comprises a tipping paper.
  • Example 18 The aerosol-generating article according to examples 15 and 17, wherein the tipping paper is arranged at least partially around the cooling section and at least partially around the mouthpiece filter.
  • Example 19 The aerosol-generating article according to examples 15 and 17 and potentially according to 18, wherein the tipping paper overlaps with the wrapping paper.
  • Example 20 The aerosol-generating article according to any of examples 17 to 19, wherein the tipping paper has a basis weight lower than the basis weight of the wrapping paper.
  • Example 21 The aerosol-generating article according to any of examples 17 to 20, wherein the basis weight of the tipping paper is 60 % to 95 % of the basis weight of the wrapping paper, preferably 65 % to 90 % of the basis weight of the wrapping paper, more preferably 70 % to 85 % of the basis weight of the wrapping paper, more preferably 75 % to 83 % of the basis weight of the wrap ping paper, most preferably 80 % of the basis weight of the wrapping paper.
  • the basis weight of the tipping paper is 60 % to 95 % of the basis weight of the wrapping paper, preferably 65 % to 90 % of the basis weight of the wrapping paper, more preferably 70 % to 85 % of the basis weight of the wrapping paper, more preferably 75 % to 83 % of the basis weight of the wrap ping paper, most preferably 80 % of the basis weight of the wrapping paper.
  • Example 22 The aerosol-generating article according to any of examples 17 to 21, wherein the tipping paper has a thickness lower than the thickness of the wrapping paper.
  • Example 23 The aerosol-generating article according to any of examples 17 to 22, wherein the thickness of the tipping paper is 55 % to 95 % of the thickness of the wrapping paper, preferably 60 % to 90 % of the thickness of the wrapping paper, more preferably 65 % to 85 % of the thickness of the wrapping paper, more preferably 70 % to 80 % of the thickness of the wrapping paper, most preferably 75 % of the thickness of the wrapping paper.
  • Example 24 The aerosol-generating article according to any of examples 17 to 23, wherein the tipping paper has a cross direction tensile strength lower than the cross direction tensile strength of the wrapping paper.
  • Example 25 The aerosol-generating article according to any of examples 17 to 24, wherein the cross direction tensile strength of the tipping paper is 30 % to 70 % of the cross direction tensile strength of the wrapping paper, preferably 35 % to 65 % of the cross direction tensile strength of the wrapping paper, more preferably 40 % to 60 % of the cross direction tensile strength of the wrapping paper, more preferably 45 % to 55 % of the cross direction tensile strength of the wrapping paper, more preferably 50 % of the cross direction tensile strength of the wrapping paper tensile strength of the wrapping paper.
  • Example 26 The aerosol-generating article according to any of examples 17 to 25, wherein the tipping paper has a machine direction tensile strength lower than the machine direction tensile strength of the wrapping paper.
  • Example 27 The aerosol-generating article according to any of examples 17 to 26, wherein the machine direction tensile strength of the tipping paper is 30 % to 70 % of the machine direction tensile strength of the wrapping paper, preferably 35 % to 65 % of the machine direction tensile strength of the wrapping paper, more preferably 40 % to 60 % of the machine direction tensile strength of the wrapping paper, more preferably 45 % to 55 % of the machine direction tensile strength of the wrapping paper, more preferably 50 % of the machine direction tensile strength of the wrapping paper.
  • Example 28 The aerosol-generating article according to examples 12 and 15, wherein the aerosol-generating article comprises, from distal end to proximal end and abutting each other: the front plug, the substrate portion, the hollow acetate tube, the cooling section, and the mouthpiece filter.
  • Example 29 An aerosol-generating device comprising a cavity for at least partly receiving the aerosol-generating article according to any of the preceding examples.
  • Example 30 The aerosol-generating device of example 29, wherein the cavity is configured to fully receive the front plug and the substrate portion of the aerosol-generating article of example 26 and at least partly receive the cooling section.
  • Example 31 An aerosol-generating system comprising the aerosol-generating article of any of examples 1 to 28 and the aerosol-generating device of any of examples 29 and 30.
  • Example 32 A method of wrapping an aerosol-generating article, comprising: wrapping a wrapping paper at least partly around the aerosol-generating article such that fibers of the wrapping paper are aligned perpendicular to a longitudinal axis of the aerosol-generating article, wherein a cross direction tensile strength of the wrapping paper is at least 15 N/15 mm.
  • Fig. 1 shows an aerosol-generating article received in the cavity of an aerosolgenerating device
  • Fig. 2 shows a more detailed view of the aerosol-generating article
  • Fig. 3 shows a testing device for testing a breaking point of the aerosol-generating article
  • Fig. 4 shows a schematic manufacturing of the wrapping paper
  • Fig. 5 shows a schematic wrapping of the wrapping paper around the aerosolgenerating article and the corresponding fiber alignment within the wrapping paper
  • a substrate portion 18 of the aerosolgenerating article 10 is arranged downstream or proximal of the front plug 16.
  • the substrate portion 18 comprises aerosol-forming substrate.
  • the substrate portion 18 is also fully received in the cavity 14 when the aerosolgenerating article 10 is received in the cavity 14.
  • a cooling section 20 of the aerosol-generating article 10 is arranged.
  • the cooling section 20 comprises a hollow acetate tube 22 and, proximal of the hollow acetate tube 22, a fine hollow acetate tube 24.
  • the hollow acetate tube 22 of the cooling section 20 is fully received in the cavity 14.
  • the fine hollow acetate tube 24 of the cooling section 20 is partly received in the cavity 14 and partly sticks out of the cavity 14.
  • a mouthpiece filter 26 of the aerosol-generating article 10 is arranged. The mouthpiece filter 26 fully sticks out of the cavity 14 and is thus arranged distanced from the aerosol-generating device 12 when the aerosol-generating article 10 is received in the cavity 14 of the aerosol-generating device 12.
  • air is drawn through the aerosol-generating device 12 into a distal end face 28 of the aerosol-generating article 10 at the front plug 16 of the aerosol-generating article 10. This air travels through the front plug 16 into the substrate portion 18.
  • the substrate portion 18 is heated by a heating element (not shown) of the aerosol-generating device 12.
  • the aerosol-forming substrate is vaporized and entrained in the air drawn through the substrate portion 18.
  • the air travels into the hollow acetate tube 22 and further into the fine hollow acetate tube 24.
  • the hollow acetate tube 22 as well as the fine hollow acetate tube 24 have a hollow cylindrical shape.
  • Figure 2 shows a more detailed view of the aerosol-generating article 10.
  • figure 2 shows a wrapping paper 32 as well as a tipping paper 34 of the aerosol-generating article 10.
  • the wrapping paper 32 is arranged surrounding the front plug 16, the substrate portion 18 as well as the cooling section 20.
  • the wrapping paper 32 fully surrounds the front plug 16, the substrate portion 18, the hollow acetate tube 22 and the fine hollow acetate tube 24 of the cooling section 20.
  • the tipping paper 34 is arranged fully surrounding the mouthpiece filter 26 as well as partly surrounding the cooling section 20.
  • the tipping paper 34 is arranged surrounding the fine hollow acetate tube 24 but not surrounding the hollow acetate tube 22.
  • the fine hollow acetate tube 24 of the cooling section 20 as well as the mouthpiece filter 26 stick out of the cavity 14.
  • the fine hollow acetate tube 24 may extend 1 mm into the cavity 14.
  • the fine hollow acetate tube 24 may have a length of 9 mm.
  • the mouthpiece filter 26 may have a length of 12 mm.
  • the fine hollow acetate tube 24 may be flush with the opening of the cavity 14.
  • the fine hollow acetate tube 24 may alternatively fully stick out of the cavity 14.
  • the fine hollow acetate tube 24 may have a length of 8 mm in this alternative.
  • the mouthpiece filter 26 may have a length of 12 mm in this alternative.
  • a breaking point of the aerosol-generating article 10 in case of the application of a lateral force against the aerosol-generating article 10 is outside of the cavity 14 when the aerosol-generating article 10 is received in the cavity 14. Most preferably, the breaking point is between the cooling section 20 and the mouthpiece filter 26. In this area, the wrapping paper 32 is not arranged around the aerosol-generating article 10. Merely the weaker tipping paper 34 is arranged wrapped around the aerosol-generating article 10 in this area.
  • Figure 3 shows an exemplary setup to test the breaking point of the aerosolgenerating article 10 upon application of a lateral force against the aerosol-generating article 10.
  • the distal part of the aerosol-generating article 10 that is held within the cavity 14 of the aerosol-generating device 12 when the aerosol-generating article 10 is received in the cavity 14 of the aerosol-generating device 12 is held by a testing device 36.
  • the proximal part of the aerosol-generating article 10 that sticks out of the cavity 14 when the aerosol-generating article 10 is received in the cavity 14 is not held by the testing device 36. Rather, the area of the aerosol-generating article 10 where the mouthpiece is arranged is subjected to a lateral force by the testing device 36. It is then checked where the aerosol-generating article 10 breaks first.
  • the lateral force is applied 6 mm from the proximal end of the aerosolgenerating article 10 in the middle of the mouthpiece filter 26.
  • the device is able to record the force necessary to break the aerosol-generating article 10. This is determined to the breaking point of the aerosol-generating article 10.
  • Figures 4 and 5 illustrates the orientation of the fibers 40 within the wrapping paper 32 as an effect of the papermaking process and the wrapping of the wrapping paper 32 around the aerosol-generating article 10.
  • figure 4 shows an illustration of a papermaking process of the papermaking of the wrapping paper 32 (or a paper such as the tipping paper 34).
  • a pulp of cellulosic material is dried while being transported on a conveyor belt (not shown).
  • the conveying direction of the conveyor belt defines a machine direction 42 or MD of the papermaking process.
  • the fibers 40 of the pulp of cellulosic material predominantly align in this machine direction 42. Consequently, less fibers 40 are aligned in a direction perpendicular to the machine direction 42, which is denoted as cross direction 44 or CD.
  • Figure 5 shows the fiber orientation of the wrapping paper 32 when being wrapped around the aerosol-generating article 10.
  • the fibers 40 arranged in the machine direction 42 are wrapped around the aerosol-generating article 10 in a tangential direction perpendicular to the longitudinal axis of the aerosol-generating article 10.
  • the fibers 40 arranged in the cross direction 44 are aligned parallel to the longitudinal axis of the aerosol-generating article 10.
  • the aerosol-generating article 10 consequently prone to breakage with the cross direction 44 tensile strength is not high enough.
  • the wrapping paper 32 is therefore provided with a high cross direction 44 tensile strength in comparison with the cross direction 44 tensile strength of the tipping paper 34.

Landscapes

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

Abstract

L'invention concerne un article de génération d'aérosol (10) comprenant un papier d'enveloppe (32, 34). Le papier d'enveloppe (32, 34) est fibreux. Les fibres du papier d'enveloppe (32, 34) sont alignées perpendiculairement à un axe longitudinal de l'article de génération d'aérosol (10). Une résistance à la traction dans la direction transversale (44) du papier d'enveloppe (32, 34) est d'au moins 15 N/15 mm. L'invention concerne en outre un système de génération d'aérosol (10, 12) comprenant l'article de génération d'aérosol (10) et un dispositif de génération d'aérosol (12). L'invention concerne en outre un procédé d'enveloppement d'un article de génération d'aérosol (10).
PCT/EP2025/053193 2024-02-12 2025-02-07 Article de génération d'aérosol à orientation transversale des fibres dans l'enveloppe Pending WO2025172173A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP24157181.9 2024-02-12
EP24157181 2024-02-12

Publications (1)

Publication Number Publication Date
WO2025172173A1 true WO2025172173A1 (fr) 2025-08-21

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Application Number Title Priority Date Filing Date
PCT/EP2025/053193 Pending WO2025172173A1 (fr) 2024-02-12 2025-02-07 Article de génération d'aérosol à orientation transversale des fibres dans l'enveloppe

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040261801A1 (en) * 2001-11-02 2004-12-30 Sonke Horn Device for wrapping groups of filter segments with a wrapping material for producing multi-segment filters of the tobacco industry and multi-segment filter production device
US20130019885A1 (en) * 2004-12-30 2013-01-24 Philip Morris Usa Inc. Parallel cigarette filter combining techniques with particle filling of cavities
WO2024013782A1 (fr) * 2022-07-11 2024-01-18 日本たばこ産業株式会社 Enveloppe pour article d'inhalation d'arôme chauffé sans combustion
WO2024013783A1 (fr) * 2022-07-11 2024-01-18 日本たばこ産業株式会社 Produit d'inhalation d'arôme de type à chauffage sans combustion

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040261801A1 (en) * 2001-11-02 2004-12-30 Sonke Horn Device for wrapping groups of filter segments with a wrapping material for producing multi-segment filters of the tobacco industry and multi-segment filter production device
US20130019885A1 (en) * 2004-12-30 2013-01-24 Philip Morris Usa Inc. Parallel cigarette filter combining techniques with particle filling of cavities
WO2024013782A1 (fr) * 2022-07-11 2024-01-18 日本たばこ産業株式会社 Enveloppe pour article d'inhalation d'arôme chauffé sans combustion
WO2024013783A1 (fr) * 2022-07-11 2024-01-18 日本たばこ産業株式会社 Produit d'inhalation d'arôme de type à chauffage sans combustion

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