EP4140333A1 - A cartridge for storing a vaporizable material comprising a coating - Google Patents
A cartridge for storing a vaporizable material comprising a coating Download PDFInfo
- Publication number
- EP4140333A1 EP4140333A1 EP21194103.4A EP21194103A EP4140333A1 EP 4140333 A1 EP4140333 A1 EP 4140333A1 EP 21194103 A EP21194103 A EP 21194103A EP 4140333 A1 EP4140333 A1 EP 4140333A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cartridge
- coating
- cartridge body
- vaporizable material
- internal surface
- 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.)
- Withdrawn
Links
- 239000011248 coating agent Substances 0.000 title claims abstract description 63
- 238000000576 coating method Methods 0.000 title claims abstract description 63
- 239000000463 material Substances 0.000 title claims abstract description 39
- 239000000443 aerosol Substances 0.000 claims abstract description 37
- 238000004064 recycling Methods 0.000 claims abstract description 8
- 239000007788 liquid Substances 0.000 claims description 19
- 238000003860 storage Methods 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 12
- 239000011888 foil Substances 0.000 claims description 5
- 238000005507 spraying Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 230000005670 electromagnetic radiation Effects 0.000 claims description 4
- 238000010422 painting Methods 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 4
- 230000002940 repellent Effects 0.000 claims description 4
- 239000005871 repellent Substances 0.000 claims description 4
- 239000004743 Polypropylene Substances 0.000 claims description 3
- -1 polypropylene Polymers 0.000 claims description 2
- 229920001155 polypropylene Polymers 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 description 23
- 239000002243 precursor Substances 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 7
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 6
- 239000010410 layer Substances 0.000 description 6
- 239000007787 solid Substances 0.000 description 6
- 239000001993 wax Substances 0.000 description 4
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 description 3
- 239000001569 carbon dioxide Substances 0.000 description 3
- 230000002209 hydrophobic effect Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- 244000068988 Glycine max Species 0.000 description 2
- 235000010469 Glycine max Nutrition 0.000 description 2
- 244000061176 Nicotiana tabacum Species 0.000 description 2
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- RYYVLZVUVIJVGH-UHFFFAOYSA-N caffeine Chemical compound CN1C(=O)N(C)C(=O)C2=C1N=CN2C RYYVLZVUVIJVGH-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005672 electromagnetic field Effects 0.000 description 2
- CBOQJANXLMLOSS-UHFFFAOYSA-N ethyl vanillin Chemical compound CCOC1=CC(C=O)=CC=C1O CBOQJANXLMLOSS-UHFFFAOYSA-N 0.000 description 2
- MLFHJEHSLIIPHL-UHFFFAOYSA-N isoamyl acetate Chemical compound CC(C)CCOC(C)=O MLFHJEHSLIIPHL-UHFFFAOYSA-N 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 230000000391 smoking effect Effects 0.000 description 2
- NOOLISFMXDJSKH-UTLUCORTSA-N (+)-Neomenthol Chemical compound CC(C)[C@@H]1CC[C@@H](C)C[C@@H]1O NOOLISFMXDJSKH-UTLUCORTSA-N 0.000 description 1
- SNICXCGAKADSCV-JTQLQIEISA-N (-)-Nicotine Chemical compound CN1CCC[C@H]1C1=CC=CN=C1 SNICXCGAKADSCV-JTQLQIEISA-N 0.000 description 1
- 241000195940 Bryophyta Species 0.000 description 1
- NOOLISFMXDJSKH-UHFFFAOYSA-N DL-menthol Natural products CC(C)C1CCC(C)CC1O NOOLISFMXDJSKH-UHFFFAOYSA-N 0.000 description 1
- LPHGQDQBBGAPDZ-UHFFFAOYSA-N Isocaffeine Natural products CN1C(=O)N(C)C(=O)C2=C1N(C)C=N2 LPHGQDQBBGAPDZ-UHFFFAOYSA-N 0.000 description 1
- 240000008790 Musa x paradisiaca Species 0.000 description 1
- 235000018290 Musa x paradisiaca Nutrition 0.000 description 1
- 244000290333 Vanilla fragrans Species 0.000 description 1
- 235000009499 Vanilla fragrans Nutrition 0.000 description 1
- 235000012036 Vanilla tahitensis Nutrition 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 239000005030 aluminium foil Substances 0.000 description 1
- 235000013871 bee wax Nutrition 0.000 description 1
- 239000012166 beeswax Substances 0.000 description 1
- 238000000071 blow moulding Methods 0.000 description 1
- 229960001948 caffeine Drugs 0.000 description 1
- VJEONQKOZGKCAK-UHFFFAOYSA-N caffeine Natural products CN1C(=O)N(C)C(=O)C2=C1C=CN2C VJEONQKOZGKCAK-UHFFFAOYSA-N 0.000 description 1
- 235000013869 carnauba wax Nutrition 0.000 description 1
- 239000004203 carnauba wax Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 235000019506 cigar Nutrition 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229940073505 ethyl vanillin Drugs 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 229940117955 isoamyl acetate Drugs 0.000 description 1
- 239000002346 layers by function Substances 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- 229940041616 menthol Drugs 0.000 description 1
- 230000003278 mimic effect Effects 0.000 description 1
- 235000011929 mousse Nutrition 0.000 description 1
- 239000010813 municipal solid waste Substances 0.000 description 1
- 229960002715 nicotine Drugs 0.000 description 1
- SNICXCGAKADSCV-UHFFFAOYSA-N nicotine Natural products CN1CCCC1C1=CC=CN=C1 SNICXCGAKADSCV-UHFFFAOYSA-N 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000008275 solid aerosol Substances 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 150000003626 triacylglycerols Chemical class 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 239000011364 vaporized material Substances 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
- A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
- A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
- A24F40/42—Cartridges or containers for inhalable precursors
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
- A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
- A24F40/70—Manufacture
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
- A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
- A24F40/85—Maintenance, e.g. cleaning
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
- A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
- A24F40/10—Devices using liquid inhalable precursors
Definitions
- the present invention concerns a cartridge for storing a vaporizable material for an aerosol generating device.
- aerosol generating devices comprise a storage portion for storing a vaporizable material, also known as aerosol forming precursor, which can comprise for example a liquid or a solid.
- a heating system is formed of one or more electrically activated resistive elements arranged to heat said precursor to generate the aerosol.
- the aerosol is released into a flow path extending between an inlet and outlet of the device.
- the outlet may be arranged in a mouthpiece, through which a user inhales for delivery of the aerosol.
- the aerosol generating devices comprise generally a battery able to power the heating system.
- the powering may be controlled by a control module connecting the heating system to the battery via an electric circuit.
- the precursor is stored in a removable cartridge.
- the cartridge can be easily removed and replaced.
- One of the aims of the present invention is to propose a cartridge making it possible to be recycled after being used. This can notably reduce the carbon dioxide production due to cartridge manufacturing.
- the invention relates to a cartridge for storing a vaporizable material for an aerosol generating device, the cartridge comprises a cartridge body defining an internal surface; the cartridge further comprising a coating covering the internal surface of the cartridge body and being extractable from the cartridge body before recycling the cartridge body.
- the internal surface of the cartridge is not directly in contact with the vaporizable material. Hence, after using the cartridge, and extracting the coating covering the internal surface of the cartridge body, said cartridge body can be recycled in a simple manner.
- the coating is extractable from the cartridge body with at least one internal element of the cartridge body having been in contact with the vaporizable material.
- the coating covers at least one internal element of the cartridge body different from the internal surface.
- said internal element is chosen in the group comprising:
- the coating is extractable using a removal process comprising at least one operation chosen in the group comprising:
- the coating is extractable using a simple removal process.
- the mentioned techniques are easy to implement in a manufacturing context.
- the coating comprises a foil or film.
- the coating can be particularly thin since the foil, or film, ensures a relatively small thickness.
- the coating does not substantially reduce the storing volume of the cartridge.
- the coating is impermeable or water repellent.
- the coating comprises a peelable tie or seal layer.
- the vaporizable material is liquid.
- the internal surface delimits a storage portion of the cartridge adapted to store the vaporizable material.
- the most important surface area intended to be normally in contact with the vaporizable material is isolated by the coating from it.
- the cartridge body is made of polypropylene or PET.
- aerosol generating device or “ device” may include a vaping device to deliver an aerosol to a user, including an aerosol for vaping, by means of aerosol generating unit (e.g. an aerosol generating element which generates vapor which condenses into an aerosol before delivery to an outlet of the device at, for example, a mouthpiece, for inhalation by a user).
- the device may be portable.
- “Portable” may refer to the device being for use when held by a user.
- the device may be adapted to generate a variable amount of aerosol, e.g. by activating a heating system for a variable amount of time (as opposed to a metered dose of aerosol), which can be controlled by a trigger.
- the trigger may be user activated, such as a vaping button and/or inhalation sensor.
- the inhalation sensor may be sensitive to the strength of inhalation as well as the duration of inhalation to enable a variable amount of vapor to be provided (so as to mimic the effect of smoking a conventional combustible smoking article such as a cigarette, cigar or pipe, etc.).
- the device may include a temperature regulation control to drive the temperature of the heater and/or the heated aerosol generating substance (aerosol pre-cursor) to a specified target temperature and thereafter to maintain the temperature at the target temperature that enables efficient generation of aerosol.
- aerosol may include a suspension of precursor as one or more of: solid particles; liquid droplets; gas. Said suspension may be in a gas including air. Aerosol herein may generally refer to/include a vapor. Aerosol may include one or more components of the precursor.
- vaporizable material or " aerosol-forming precursor" may refer to one or more of a: liquid; solid; gel; mousse; foam or other substances.
- the vaporizable material may be processable by the heating system of the device to form an aerosol as defined herein.
- the vaporizable material may comprise one or more of: nicotine; caffeine or other active components.
- the active component may be carried with a carrier, which may be a liquid.
- the carrier may include propylene glycol or glycerin.
- a flavoring may also be present. The flavoring may include Ethylvanillin (vanilla), menthol, Isoamyl acetate (banana oil) or similar.
- a solid aerosol forming substance may be in the form of a rod, which contains processed tobacco material, a crimped sheet or oriented strips or shreds of reconstituted tobacco (RTB).
- Figure 1 shows an aerosol generating set 10 comprising an aerosol generating device 12 and a cartridge 14 configured to operate with the aerosol generating device 12.
- the cartridge is preferentially a removable cartridge that can be plugged and unplugged on the aerosol generating device 12.
- the aerosol generating device 12 extends along a device axis X and comprises a housing 21 delimiting a cavity 23 configured to receive, at least partially, the cartridge 14.
- the cavity 23 extends for example according to the device axis X and is delimited by a bottom wall 25 perpendicular to the device axis X and at least one side wall 27 extending along the device axis X.
- the housing 21 delimits an internal space of the device 12 receiving various elements designed to carry out different functionalities of the device 12.
- the internal space can for example receive a power block 31 for powering the device 12, a control module 32 for controlling the operation of the device 12 and at least a device part 39 of a heating system configured to heat a vaporizable material contained in the cartridge 14 as it will be explained in further details below.
- the internal space of the housing 21 may further comprise other internal components performing different functionalities of the device 12 known per se. These internal components will not be explained in detail below.
- Figure 1 presents only a schematic diagram of different components of the aerosol generating set 10 and does not necessarily show the real physical arrangement and dimension of said components. Particularly, such an arrangement can be chosen according to the design of the aerosol generating set and technical features of its components.
- the power block 31 comprises a battery 35 and a battery charger 36.
- the battery 35 is for example a known battery designed to be charged using the power supply furnished by an external source and to provide a direct current of a predetermined voltage.
- the battery charger 36 is able to connect the battery 35 to the external source and comprises for this purpose a power connector (for example a mini-USB or USB-C connector) or wireless charging connector.
- the control module 32 is configured to control the operation of the aerosol generating device 12 and notably, of the heating system to generate aerosol by controlling the power link of this heating system by the battery 35.
- the control module 32 is connected to the battery 35.
- the control performed by the control module 32 is known per se and will not be detailed hereinafter.
- the cartridge 14 comprises a body 51, or cartridge body 51, having a shape at least partially complementary to the shape of the cavity 23.
- the cartridge 14 can be received at least partially inside the cavity 23 of the aerosol generating device 12.
- the cartridge body 51 extends between a proximal end 52 designed to be received entirely in the cavity 23 and a distal end 53 designed to be received in the cavity 23 or protrude from it.
- the distal end 53 can form a mouthpiece designed to be in contact with the user's mouth and/or lips during a vaping session.
- the proximal end 52 forms a contact surface 55 extending perpendicularly to the device axis X when the cartridge 14 is received in the cavity 23 and designed to be in contact with the bottom wall 25 of the cavity 23.
- the cartridge body 51 advantageously receives internal elements including notably a storage portion 56, an airflow channel 58 and a cartridge part 59 of the heating system.
- the cartridge body 51 further defines an internal surface 54 delimiting at least some of its internal components, as it will be explained in further detail below.
- the storage portion 56 can store the vaporizable material in a liquid and/or a solid form and is delimited by at least a part of the internal surface 54.
- the cartridge part 59 of the heating system comprises a heater 60 and a liquid transport element 62 such as a capillary wick.
- both cartridge part 59 and device part 39 of the heating system may for example comprise a pair of contacts protruding respectfully from the contact surface 55 of the cartridge 14 and from the bottom wall 25 of the cavity 23. Said contacts make it possible to power the heater 60 from the battery of the device 12, and thus vaporize the vaporizable material delivered by the liquid transport element 62.
- the cartridge part 59 of the heating system may comprise susceptors. These susceptors can be arranged and/or distributed in the storage portion 56 of the cartridge 14.
- the device part 39 of the heating system may comprise electromagnetic emitter(s) configured to produce an electromagnetic field when powered by the battery.
- an emitter can comprise for example a magnetic coil configured to be arranged around the cartridge 14.
- each of the cartridge part 59 and device part 39 of the heating system may comprise a heating plate which is intended to be engaged with the heating plate of the other part to transfer heat to the vaporizable material.
- no cartridge part 59 of the heating system can be provided.
- the device part 39 of the heating system like for example a heating blade, may be configured to penetrate the storage portion 56 of the cartridge 14 to heat directly the vaporizable material.
- the airflow channel 58 may extend from the heater 60 to the distal end 53 and aims at guiding an airflow loaded with vaporized material, until the user's mouth, during a vaping session.
- an external surface of the airflow channel 58 delimits partially the storage portion 56 and makes for example a part of the internal surface 54.
- the internal surface 54 of the cartridge body 51 is composed of any surface which is intended to be in contact with the vaporizable material.
- the internal surface 54 can comprise the surface delimiting the storage portion 56 (including the external surface of the airflow channel 58) and an internal surface of the airflow channel 58 guiding the vaporized vaporizable material.
- the internal surface 54 can for example comprise only the surface delimiting the storage portion 56 including the external surface of the airflow channel 58.
- the internal surface 54 can comprise only the surface delimiting the storage portion 56 (excluding the external surface of the airflow channel 58).
- the cartridge 14 further comprises a coating 67 covering the internal surface 54 as defined below.
- the vaporizable material is not directly in contact with the internal surface 54.
- the coating 67 may further cover at least one other internal component of the cartridge body 51 as the heater 60 and/or the liquid transport element 62.
- the coating 67 may for example comprise a foil or film.
- the coating 67 is a thin foil or film, which fits the internal surface 54, in order not to avoid losing the internal volume of the cartridge body 51.
- the coating 67 is applied on the internal surface 54 by spraying or painting the corresponding internal surface 54.
- the coating 67 can for example initially be a sprayable element or a liquid, which is applied on the internal surface 54.
- the coating 67 is hardened, for example to make it solid, by applying heat to the internal surface 54. Said heat might be applied from an exterior of the cartridge body 51.
- the coating 67 is preferably impermeable.
- the coating 67 is made in a hydrophobic material. In this latter case, the coating 67 is also named hydrophobic coating 67.
- the coating 67 is applied on the internal surface 54 of the cartridge body 51 before assembling the cartridge 14.
- the coating 67 can be applied on the internal surface 54 prior to assembling the internal components of the cartridge as for example the heater 60 and the liquid transport element 62, and prior to filling the cartridge with the vaporizable material.
- the coating 67 can for example be applied inside the cartridge body 51, after inserting the airflow channel 58 but before inserting the heater 60 and the liquid transport element 62, and before filling the storage portion with the vaporizable material.
- the coating 67 is extractable from the cartridge body 51.
- the coating 67 is preferably extractable from the cartridge body 51 using a removal process comprising at least one operation chosen in the following group:
- Applying pressure inside the cartridge body can be understood as applying a pressure of a predetermined value, which can for example be determined empirically.
- the pressure can be applied by means of a fluid or solid particles.
- Applying heat can be understood as increasing the temperature surrounding the cartridge body 51 or on the internal surface 54 by a predetermined value, which can for example be determined empirically.
- the mechanical action for example comprises scratching the coating 67 or tearing, peeling or pulling the coating 67 out of the cartridge body 51 from the proximal 52 or from the distal 53 end.
- Applying electromagnetic radiation can comprises enlightening the cartridge with a light beam having a wavelength lower for example than 400 nanometers (nm), i.e. ultraviolet rays.
- the coating 67 when being extracted from the cartridge body 51, can form a bag, carrying with it, at least one among the airflow channel 58, the heater 60 and the liquid transport element 62.
- the cartridge body 51 is empty.
- the airflow channel 58 is put in the cartridge body 51.
- the coating 67 is then applied on the internal surface 54 by spraying or painting on the corresponding surface 54 or dipping the surface in a liquid material bath or drop casting deposition.
- the coating may require hardening at ambient or polymerisation using heat or plasma.
- the coating 67 is also applied on the airflow channel 58.
- the internal surface 54 is then heated to harden the coating 67.
- the heater 60 and the liquid transport element 62 are then installed in the cartridge body 51 and the vaporizable material is injected in the storage portion 56 of the cartridge body 51.
- the cartridge 14 can thus be operated by a user.
- the coating 67 is applied to the internal surface of the body by blow moulding.
- the hydrophobic coating 67 may be made of water repellent material such as wax and/or triacyl glyceride or SiO2 film.
- the coating comprises: beeswax, carnauba wax, paraffin, soybean wax, soybean wax.
- the coating 67 can be prepared as a suspension of wax in water for spraying on the surface.
- the coating 67 is for example formed of at least two distinct functional layers. Said layers are not represented on the figures.
- the seal layer can be formulated to peel the coating 67 from the inner surface 54.
- the tie or seal layer can be a peelable resin such as APPEEL TM resin commercialized by Dow.
- the coating 67 comprises a thin aluminium foil (e.g. 5 to 30 microns thick).
- the cartridge body 51 may be made of rigid and heat-resistant polyolefin such as PP or PET.
- the thickness of the cartridge body 51 may be between 0.5 and 1.5 mm.
- the cartridge 14 When the user finishes using the cartridge 14, i.e. when sensibly all the vaporizable material is consumed or when the cartridge part of the heating system 59 becomes dysfunctional, the cartridge 14 is to be recycled.
- the cartridge part 59 of the heating system is firstly extracted from the cartridge body 51. Then, the coating 67 is extracted according to at least one of the removal processes, as previously explained introduced. According to some embodiments, such a process is performed by a dedicated service. According to some other embodiments, such a process is performed by the user. As explained above, the coating 67 can be extracted together with at least some internal components like the airflow channel 58, the heater 60 and/or the liquid transport element 62.
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- Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
Abstract
The present invention concerns a cartridge (14) for storing a vaporizable material for an aerosol generating device. The cartridge (14) comprises a cartridge body (51) defining an internal surface (54).
The cartridge (14) further comprises a coating (67) covering the internal surface (54) of the cartridge body (51) and being extractable from the cartridge body (51) before recycling the cartridge body (51).
Description
- The present invention concerns a cartridge for storing a vaporizable material for an aerosol generating device.
- Different types of aerosol generating devices are already known in the art. Generally, such devices comprise a storage portion for storing a vaporizable material, also known as aerosol forming precursor, which can comprise for example a liquid or a solid. A heating system is formed of one or more electrically activated resistive elements arranged to heat said precursor to generate the aerosol. The aerosol is released into a flow path extending between an inlet and outlet of the device. The outlet may be arranged in a mouthpiece, through which a user inhales for delivery of the aerosol.
- The aerosol generating devices comprise generally a battery able to power the heating system. The powering may be controlled by a control module connecting the heating system to the battery via an electric circuit.
- In some aerosol generating devices, the precursor is stored in a removable cartridge. Thus, when the precursor is consumed, the cartridge can be easily removed and replaced.
- However, when the cartridge is empty, i.e. all the vaporizable material has been consumed, the cartridge is generally not recycled but rather put in a trash by a user. In addition, as for any manufactured product, cartridge manufacturing produces carbon dioxide and other polluting elements. Thus, reusing or recycling cartridges, at least partially, would considerably reduce the pollution related to said manufacturing.
- Nevertheless, recycling the cartridge requires complex technologies and techniques since its internal surface has been in contact with the vaporizable material.
- There is thus a need to make cartridge's recycling possible in a simple way. This can for example lead to reducing carbon dioxide production due to cartridge manufacturing.
- One of the aims of the present invention is to propose a cartridge making it possible to be recycled after being used. This can notably reduce the carbon dioxide production due to cartridge manufacturing.
- For this purpose, the invention relates to a cartridge for storing a vaporizable material for an aerosol generating device, the cartridge comprises a cartridge body defining an internal surface;
the cartridge further comprising a coating covering the internal surface of the cartridge body and being extractable from the cartridge body before recycling the cartridge body. - Particularly, provided with these features, the internal surface of the cartridge is not directly in contact with the vaporizable material. Hence, after using the cartridge, and extracting the coating covering the internal surface of the cartridge body, said cartridge body can be recycled in a simple manner.
- According to some embodiments, the coating is extractable from the cartridge body with at least one internal element of the cartridge body having been in contact with the vaporizable material.
- Provided with these features, a higher amount of elements in contact with the vaporizable material is extractable simultaneously, simplifying the recycling process of the cartridge.
- According to some embodiments, the coating covers at least one internal element of the cartridge body different from the internal surface.
- According to some embodiments, said internal element is chosen in the group comprising:
- a liquid transport element;
- a heater;
- a susceptor;
- an airflow channel.
- Thanks to said feature, it is possible to isolate said internal element from contacting with the vaporizable material, so as it can be recycled after the coating extraction.
- According to some embodiments, the coating is extractable using a removal process comprising at least one operation chosen in the group comprising:
- applying pressure inside the cartridge body;
- applying heat, preferably by increasing surrounding temperature;
- applying a mechanical action;
- applying electromagnetic radiations, such as UV rays.
- Provided with these features, the coating is extractable using a simple removal process. Actually, the mentioned techniques are easy to implement in a manufacturing context.
- According to some embodiments, the coating comprises a foil or film.
- Thanks to these features, the coating can be particularly thin since the foil, or film, ensures a relatively small thickness. Thus, the coating does not substantially reduce the storing volume of the cartridge.
- According to some embodiments, the coating is impermeable or water repellent.
- Provided with this feature, no vaporizable material particles could transit through the coating ensuring that the internal surface of the cartridge not being in contact with the vaporizable material.
- According to some embodiments, the coating comprises a peelable tie or seal layer.
- According to some embodiments:
- the coating is applied by spraying or painting on the corresponding surface;
- the coating is applied on the corresponding surface using heat to harden it; and/or
- the coating is applied on the internal surface of the cartridge body before assembling the cartridge.
- Each of these features makes it possible to apply the coating in the cartridge body in a simple manner.
- According to some embodiments, the vaporizable material is liquid.
- According to some embodiments, the internal surface delimits a storage portion of the cartridge adapted to store the vaporizable material.
- Thanks to these features, the most important surface area intended to be normally in contact with the vaporizable material is isolated by the coating from it.
- According to some embodiments, the cartridge body is made of polypropylene or PET.
- The invention and its advantages will be better understood upon reading the following description, which is given solely by way of non-limiting example and which is made with reference to the appended drawings, in which:
-
Figure 1 is a schematic diagram showing an aerosol generating set comprising a cartridge according to the invention; and -
Figure 2 is a cross-sectional view of the cartridge ofFigure 1 . - Before describing the invention, it is to be understood that it is not limited to the details of construction set forth in the following description. It will be apparent to those skilled in the art having the benefit of the present disclosure that the invention is capable of other embodiments and of being practiced or being carried out in various ways.
- As used herein, the term "aerosol generating device" or "device" may include a vaping device to deliver an aerosol to a user, including an aerosol for vaping, by means of aerosol generating unit (e.g. an aerosol generating element which generates vapor which condenses into an aerosol before delivery to an outlet of the device at, for example, a mouthpiece, for inhalation by a user). The device may be portable. "Portable" may refer to the device being for use when held by a user. The device may be adapted to generate a variable amount of aerosol, e.g. by activating a heating system for a variable amount of time (as opposed to a metered dose of aerosol), which can be controlled by a trigger. The trigger may be user activated, such as a vaping button and/or inhalation sensor. The inhalation sensor may be sensitive to the strength of inhalation as well as the duration of inhalation to enable a variable amount of vapor to be provided (so as to mimic the effect of smoking a conventional combustible smoking article such as a cigarette, cigar or pipe, etc.). The device may include a temperature regulation control to drive the temperature of the heater and/or the heated aerosol generating substance (aerosol pre-cursor) to a specified target temperature and thereafter to maintain the temperature at the target temperature that enables efficient generation of aerosol.
- As used herein, the term "aerosol" may include a suspension of precursor as one or more of: solid particles; liquid droplets; gas. Said suspension may be in a gas including air. Aerosol herein may generally refer to/include a vapor. Aerosol may include one or more components of the precursor.
- As used herein, the term "vaporizable material" or "aerosol-forming precursor" may refer to one or more of a: liquid; solid; gel; mousse; foam or other substances. The vaporizable material may be processable by the heating system of the device to form an aerosol as defined herein. The vaporizable material may comprise one or more of: nicotine; caffeine or other active components. The active component may be carried with a carrier, which may be a liquid. The carrier may include propylene glycol or glycerin. A flavoring may also be present. The flavoring may include Ethylvanillin (vanilla), menthol, Isoamyl acetate (banana oil) or similar. A solid aerosol forming substance may be in the form of a rod, which contains processed tobacco material, a crimped sheet or oriented strips or shreds of reconstituted tobacco (RTB).
-
Figure 1 shows an aerosol generating set 10 comprising anaerosol generating device 12 and acartridge 14 configured to operate with theaerosol generating device 12. The cartridge is preferentially a removable cartridge that can be plugged and unplugged on theaerosol generating device 12. - As shown on
figure 1 , theaerosol generating device 12 extends along a device axis X and comprises ahousing 21 delimiting acavity 23 configured to receive, at least partially, thecartridge 14. Thecavity 23 extends for example according to the device axis X and is delimited by abottom wall 25 perpendicular to the device axis X and at least oneside wall 27 extending along the device axis X. - The
housing 21 delimits an internal space of thedevice 12 receiving various elements designed to carry out different functionalities of thedevice 12. The internal space can for example receive apower block 31 for powering thedevice 12, acontrol module 32 for controlling the operation of thedevice 12 and at least adevice part 39 of a heating system configured to heat a vaporizable material contained in thecartridge 14 as it will be explained in further details below. The internal space of thehousing 21 may further comprise other internal components performing different functionalities of thedevice 12 known per se. These internal components will not be explained in detail below. - It should also be noted that
Figure 1 presents only a schematic diagram of different components of the aerosol generating set 10 and does not necessarily show the real physical arrangement and dimension of said components. Particularly, such an arrangement can be chosen according to the design of the aerosol generating set and technical features of its components. - The
power block 31 comprises abattery 35 and abattery charger 36. Thebattery 35 is for example a known battery designed to be charged using the power supply furnished by an external source and to provide a direct current of a predetermined voltage. Thebattery charger 36 is able to connect thebattery 35 to the external source and comprises for this purpose a power connector (for example a mini-USB or USB-C connector) or wireless charging connector. - The
control module 32 is configured to control the operation of theaerosol generating device 12 and notably, of the heating system to generate aerosol by controlling the power link of this heating system by thebattery 35. For this purpose, thecontrol module 32 is connected to thebattery 35. The control performed by thecontrol module 32 is known per se and will not be detailed hereinafter. - As it is shown on
Figure 1 , thecartridge 14 comprises abody 51, orcartridge body 51, having a shape at least partially complementary to the shape of thecavity 23. Thus, thecartridge 14 can be received at least partially inside thecavity 23 of theaerosol generating device 12. As it is shown onFigure 2 , thecartridge body 51 extends between aproximal end 52 designed to be received entirely in thecavity 23 and adistal end 53 designed to be received in thecavity 23 or protrude from it. In this last case, thedistal end 53 can form a mouthpiece designed to be in contact with the user's mouth and/or lips during a vaping session. Theproximal end 52 forms acontact surface 55 extending perpendicularly to the device axis X when thecartridge 14 is received in thecavity 23 and designed to be in contact with thebottom wall 25 of thecavity 23. - The
cartridge body 51 advantageously receives internal elements including notably astorage portion 56, anairflow channel 58 and acartridge part 59 of the heating system. Thecartridge body 51 further defines aninternal surface 54 delimiting at least some of its internal components, as it will be explained in further detail below. - The
storage portion 56 can store the vaporizable material in a liquid and/or a solid form and is delimited by at least a part of theinternal surface 54. - When the vaporizable material is in a liquid form, according to the example of the invention shown on
Figure 2 , thecartridge part 59 of the heating system comprises aheater 60 and aliquid transport element 62 such as a capillary wick. More specifically, in this case, bothcartridge part 59 anddevice part 39 of the heating system may for example comprise a pair of contacts protruding respectfully from thecontact surface 55 of thecartridge 14 and from thebottom wall 25 of thecavity 23. Said contacts make it possible to power theheater 60 from the battery of thedevice 12, and thus vaporize the vaporizable material delivered by theliquid transport element 62. - According to another example of the invention, the
cartridge part 59 of the heating system may comprise susceptors. These susceptors can be arranged and/or distributed in thestorage portion 56 of thecartridge 14. In this case, thedevice part 39 of the heating system may comprise electromagnetic emitter(s) configured to produce an electromagnetic field when powered by the battery. Such an emitter can comprise for example a magnetic coil configured to be arranged around thecartridge 14. Thus, when an electromagnetic field is created by the coil, eddy currents appear in the susceptor that leads to their heating. - According to still another example of the invention, each of the
cartridge part 59 anddevice part 39 of the heating system may comprise a heating plate which is intended to be engaged with the heating plate of the other part to transfer heat to the vaporizable material. - According to still another embodiment, no
cartridge part 59 of the heating system can be provided. In this case, thedevice part 39 of the heating system, like for example a heating blade, may be configured to penetrate thestorage portion 56 of thecartridge 14 to heat directly the vaporizable material. - Other examples of the heating system are still possible.
- Referring again to the example of
Figure 2 , theairflow channel 58 may extend from theheater 60 to thedistal end 53 and aims at guiding an airflow loaded with vaporized material, until the user's mouth, during a vaping session. In the embodiment ofFigure 2 , an external surface of theairflow channel 58 delimits partially thestorage portion 56 and makes for example a part of theinternal surface 54. - According to an example of the invention, the
internal surface 54 of thecartridge body 51 is composed of any surface which is intended to be in contact with the vaporizable material. For example, in this case, theinternal surface 54 can comprise the surface delimiting the storage portion 56 (including the external surface of the airflow channel 58) and an internal surface of theairflow channel 58 guiding the vaporized vaporizable material. In other cases, theinternal surface 54 can for example comprise only the surface delimiting thestorage portion 56 including the external surface of theairflow channel 58. Still in some other cases, theinternal surface 54 can comprise only the surface delimiting the storage portion 56 (excluding the external surface of the airflow channel 58). - According to the invention, the
cartridge 14 further comprises acoating 67 covering theinternal surface 54 as defined below. Thus, the vaporizable material is not directly in contact with theinternal surface 54. In some embodiments, thecoating 67 may further cover at least one other internal component of thecartridge body 51 as theheater 60 and/or theliquid transport element 62. - The
coating 67 may for example comprise a foil or film. Preferably, thecoating 67 is a thin foil or film, which fits theinternal surface 54, in order not to avoid losing the internal volume of thecartridge body 51. - Optionally, the
coating 67 is applied on theinternal surface 54 by spraying or painting the correspondinginternal surface 54. In other words, thecoating 67 can for example initially be a sprayable element or a liquid, which is applied on theinternal surface 54. Preferably, thecoating 67 is hardened, for example to make it solid, by applying heat to theinternal surface 54. Said heat might be applied from an exterior of thecartridge body 51. Thecoating 67 is preferably impermeable. Optionally, thecoating 67 is made in a hydrophobic material. In this latter case, thecoating 67 is also namedhydrophobic coating 67. - Advantageously the
coating 67 is applied on theinternal surface 54 of thecartridge body 51 before assembling thecartridge 14. In other words, thecoating 67 can be applied on theinternal surface 54 prior to assembling the internal components of the cartridge as for example theheater 60 and theliquid transport element 62, and prior to filling the cartridge with the vaporizable material. - In the example of
Figure 2 , thecoating 67 can for example be applied inside thecartridge body 51, after inserting theairflow channel 58 but before inserting theheater 60 and theliquid transport element 62, and before filling the storage portion with the vaporizable material. - Additionally, according to the invention, the
coating 67 is extractable from thecartridge body 51. Thecoating 67 is preferably extractable from thecartridge body 51 using a removal process comprising at least one operation chosen in the following group: - applying pressure inside the
cartridge body 51; - applying heat, preferably by increasing surrounding temperature of the
cartridge body 51; - applying a mechanical action,
or - applying electromagnetic radiation on the
coating 67. - Applying pressure inside the cartridge body can be understood as applying a pressure of a predetermined value, which can for example be determined empirically. The pressure can be applied by means of a fluid or solid particles.
- Applying heat can be understood as increasing the temperature surrounding the
cartridge body 51 or on theinternal surface 54 by a predetermined value, which can for example be determined empirically. - The mechanical action for example comprises scratching the
coating 67 or tearing, peeling or pulling thecoating 67 out of thecartridge body 51 from the proximal 52 or from the distal 53 end. - Applying electromagnetic radiation can comprises enlightening the cartridge with a light beam having a wavelength lower for example than 400 nanometers (nm), i.e. ultraviolet rays.
- Advantageously, in some embodiments, when being extracted from the
cartridge body 51, thecoating 67 can form a bag, carrying with it, at least one among theairflow channel 58, theheater 60 and theliquid transport element 62. - An assembling method of the
cartridge 14, according to a particular example of the invention, will now be explained. - Initially, the
cartridge body 51 is empty. Advantageously, theairflow channel 58 is put in thecartridge body 51. Thecoating 67 is then applied on theinternal surface 54 by spraying or painting on thecorresponding surface 54 or dipping the surface in a liquid material bath or drop casting deposition. The coating may require hardening at ambient or polymerisation using heat or plasma. Preferably, thecoating 67 is also applied on theairflow channel 58. Theinternal surface 54 is then heated to harden thecoating 67. Theheater 60 and theliquid transport element 62 are then installed in thecartridge body 51 and the vaporizable material is injected in thestorage portion 56 of thecartridge body 51. Thecartridge 14 can thus be operated by a user. In another possible embodiment, thecoating 67 is applied to the internal surface of the body by blow moulding. - In general, the
hydrophobic coating 67 may be made of water repellent material such as wax and/or triacyl glyceride or SiO2 film. For example, the coating comprises: beeswax, carnauba wax, paraffin, soybean wax, soybean wax. Thecoating 67 can be prepared as a suspension of wax in water for spraying on the surface. - The
coating 67 is for example formed of at least two distinct functional layers. Said layers are not represented on the figures. An inner seal or tie layer and an outer water repellent layer. The seal layer can be formulated to peel thecoating 67 from theinner surface 54. For example, the tie or seal layer can be a peelable resin such as APPEEL™ resin commercialized by Dow. - In a possible example, the
coating 67 comprises a thin aluminium foil (e.g. 5 to 30 microns thick). - In general, the
cartridge body 51 may be made of rigid and heat-resistant polyolefin such as PP or PET. The thickness of thecartridge body 51 may be between 0.5 and 1.5 mm. - A recycling method of the
cartridge 14, according to a particular example of the invention, is now explained. - When the user finishes using the
cartridge 14, i.e. when sensibly all the vaporizable material is consumed or when the cartridge part of theheating system 59 becomes dysfunctional, thecartridge 14 is to be recycled. - The
cartridge part 59 of the heating system is firstly extracted from thecartridge body 51. Then, thecoating 67 is extracted according to at least one of the removal processes, as previously explained introduced. According to some embodiments, such a process is performed by a dedicated service. According to some other embodiments, such a process is performed by the user. As explained above, thecoating 67 can be extracted together with at least some internal components like theairflow channel 58, theheater 60 and/or theliquid transport element 62.
Claims (14)
- A cartridge (14) for storing a vaporizable material for an aerosol generating device (12), the cartridge (14) comprises a cartridge body (51) defining an internal surface (54);
the cartridge (14) being characterized in that it further comprises a coating (67) covering the internal surface (54) of the cartridge body (51) and being extractable from the cartridge body (51) before recycling the cartridge body (51). - The cartridge (14) according to claim 1, wherein the coating (67) is extractable from the cartridge body (51) with at least one internal element (58, 60, 62) of the cartridge body (51) having been in contact with the vaporizable material.
- The cartridge (14) according to claim 1 or 2, wherein the coating (67) covers at least one internal element (58, 60, 62) of the cartridge body (51) different from the internal surface (54).
- The cartridge according to claim 2 or 3, wherein said internal element (58, 60, 62) is chosen in the group comprising:- a liquid transport element (62);- a heater (60);- a susceptor;- an airflow channel (58).
- The cartridge (14) according to any one of the preceding claims, wherein the coating (67) is extractable using a removal process comprising at least one operation chosen in the group comprising:- applying pressure inside the cartridge body (51);- applying heat, preferably by increasing surrounding temperature;- applying a mechanical action;- applying electromagnetic radiations, such as UV rays.
- The cartridge (14) according to any one of the preceding claims, wherein the coating (67) comprises a foil or film.
- The cartridge (14) according to any one of the preceding claims, wherein the coating (67) is impermeable or water repellent.
- The cartridge (14) according to claim 7, wherein the coating (67) comprises a peelable tie or seal layer.
- The cartridge (14) according to any one of the preceding claims, wherein the coating (67) is applied by spraying or painting on the corresponding surface (54).
- The cartridge (14) according to any one of the preceding claims, wherein the coating (67) is applied on the corresponding surface (54) using heat to harden it.
- The cartridge (14) according to any one of the preceding claims, wherein the coating (67) is applied on the internal surface (54) of the cartridge body before assembling the cartridge.
- The cartridge (14) according to any one of the preceding claims, wherein the vaporizable material is liquid.
- The cartridge (14) according to any one of the preceding claims, wherein the internal surface (54) delimits a storage portion (56) of the cartridge adapted to store the vaporizable material.
- The cartridge (14) according to any one of the preceding claims, wherein the cartridge body (51) is made of polypropylene or PET.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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EP21194103.4A EP4140333A1 (en) | 2021-08-31 | 2021-08-31 | A cartridge for storing a vaporizable material comprising a coating |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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EP21194103.4A EP4140333A1 (en) | 2021-08-31 | 2021-08-31 | A cartridge for storing a vaporizable material comprising a coating |
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EP4140333A1 true EP4140333A1 (en) | 2023-03-01 |
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EP21194103.4A Withdrawn EP4140333A1 (en) | 2021-08-31 | 2021-08-31 | A cartridge for storing a vaporizable material comprising a coating |
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Citations (5)
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US20040003820A1 (en) * | 2002-07-02 | 2004-01-08 | Iannuzzi Diane M. | Cigarette substitute |
US20140263304A1 (en) * | 2011-05-16 | 2014-09-18 | Richard Guertin | Recyclable compost container |
US20170055584A1 (en) * | 2015-08-31 | 2017-03-02 | British American Tobacco (Investments) Limited | Article for use with apparatus for heating smokable material |
EP3363309A2 (en) * | 2017-05-26 | 2018-08-22 | Shenzhen First Union Technology Co., Ltd. | Atomizer and electronic cigarette |
CN208403248U (en) * | 2017-12-07 | 2019-01-22 | 云南优宝科技有限公司 | A kind of electronics tabacco barn |
-
2021
- 2021-08-31 EP EP21194103.4A patent/EP4140333A1/en not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040003820A1 (en) * | 2002-07-02 | 2004-01-08 | Iannuzzi Diane M. | Cigarette substitute |
US20140263304A1 (en) * | 2011-05-16 | 2014-09-18 | Richard Guertin | Recyclable compost container |
US20170055584A1 (en) * | 2015-08-31 | 2017-03-02 | British American Tobacco (Investments) Limited | Article for use with apparatus for heating smokable material |
EP3363309A2 (en) * | 2017-05-26 | 2018-08-22 | Shenzhen First Union Technology Co., Ltd. | Atomizer and electronic cigarette |
CN208403248U (en) * | 2017-12-07 | 2019-01-22 | 云南优宝科技有限公司 | A kind of electronics tabacco barn |
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