Aerosol-generating device providing a fragrance
The aerosol-generating device addresses fragrance emission challenges by using a scented portion with controlled release technology, ensuring intense and consistent fragrance delivery within a temperature range, enhancing consumer enjoyment.
Patent Information
- Application Number
- PCT/CN2024/108203
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-07-29
- Publication Date
- 2026-02-05
AI Technical Summary
Existing aerosol-generating devices face challenges in providing intense and consistent fragrance emission due to regulatory limits on flavoring agents and instability of certain fragrances, which limits consumer enjoyment and sensory experience.
An aerosol-generating device with a scented portion containing a fragrance agent, coated onto the housing, that releases fragrance efficiently into the nasal area, using a scented ink formulated with water-based resin and microcapsule compounds to control fragrance release within a predetermined temperature range.
The device provides intensified aroma perception during use, ensuring consistent fragrance emission without health risks, enhancing consumer experience through controlled fragrance release mechanisms.
Smart Images

Figure CN2024108203_05022026_PF_FP_ABST
Abstract
Description
Aerosol-Generating Device Providing a Fragrance
[0001] The present invention relates an aerosol-generating device, a method of manufacturing an aerosol-generating device and the use of a scented ink in a housing of an aerosol-generating device.
[0002] In the field of aerosol-generating devices, in particular the field of reduced risk products (RRP) , taste and aroma are critical for the acceptance of the device by the consumer. A common characteristic of reduced risk products is to employ both traditional tobacco-based ingredients and auxiliary flavor or fragrance carriers. For instance, in traditional reduced risk product systems, comprising a heatable consumable, e.g. a tobacco article, paired with an electronic device, the consumable may be manufactured to incorporate a tobacco material, together with a flavoring agent. More specifically, certain market-available consumables incorporate encapsulated flavoring agents, designed for activation upon consumer interaction, such as by compressing a capsule. Some reduced risk products incorporate flavoring agents directly into the tobacco. This is achieved through a process where flavoring or fragrance substances are blended with a tobacco base, such as shredded or reconstituted tobacco. Upon activation, which can occur either through heat or by the consumer's manual action, such as breaking a capsule, these substances emit their aromatic compounds. As a result, during inhalation, consumers experience distinct flavors that elevate their overall enjoyment and sensory experience.
[0003] However, flavoring agents or fragrances in the consumable have to be suitable for inhalation by the consumer. Regulations impose strict limits on the quantity of flavoring agents in consumables, which often leads to less pronounced flavors. Further, only a selected range of fragrances are suitable for being used in the consumable. For example, some fragrances or flavors are too volatile or unstable to be included in a consumable.
[0004] According to a first aspect of the invention there is provided an aerosol-generating device. The aerosol-generating device is adapted to receive or contain an aerosol-generating article. The aerosol-generating device comprises a scented portion. The scented portion comprises a fragrance agent. The scented portion is adapted to release the fragrance agent, in particular into the air.
[0005] In particular, the perception of the flavoring agents or fragrances is typically predominantly in the consumer’s nasal area. The release of the fragrance agent may enable that same is efficiently provided to the consumer’s nasal area.
[0006] The aerosol-generating article may comprise tobacco. The aerosol-generating article may comprise a liquid. The aerosol-generating article may be a container comprising liquid. The aerosol-generating article may be rod-shaped, and be in particular 10 millimeters to 100 millimeters, in particular 20 millimeters to 50 millimeters, long. The aerosol-generating article may be heatable and may in particular be a combustible article.
[0007] The aerosol-generating device may be adapted to heat the aerosol-generating article. The aerosol-generating device may comprise a heating element adapted to heat the aerosol-generating article. The aerosol-generating device may be adapted to volatize or vaporize (or volatize and vaporize) the aerosol-generating article or at least parts of the aerosol-generating article. The aerosol-generating device may be adapted to generate smoke from the aerosol-generating article, in particular from combustible ingredients of the aerosol-generating article. The aerosol-generating article may be adapted to provide an aerosol from a liquid inside the aerosol-generating article.
[0008] The fragrance agent may comprise an aroma. The fragrance agent may comprise a natural aroma. The fragrance agent may comprise an artificial aroma.
[0009] With the scented portion, in particular with the fragrance agent, it may be possible to provide an intensified aroma without posing an increased health risk to the consumer. With the scented portion, in particular with the fragrance agent, it may be possible to provide a consistent fragrance emission throughout extended consumption periods.
[0010] The aerosol-generating device may comprise a housing. The scented portion may form part of the housing. The scented portion may be coated onto the housing. The housing may be coated with the scented portion. An outer surface of the housing may be coated with the scented portion. The scented portion may form part of an outer surface of the housing.
[0011] The scented portion may be coated onto the entire outer surface of the housing. The entire outer surface of the housing may be coated with the scented portion, in particular with the fragrance agent. The scented portion may be coated onto one or more specific areas of the outer surface of the housing. The one or more specific areas specific areas of the outer surface of the housing may be coated with the scented portion, in particular the fragrance agent. The one or more specific area of the outer surface of the housing may be located at or near the downstream end of the aerosol-generating device. The one or more specific areas may cover less than 50 percent, in particular less than 30 percent, of the entire outer surface of the housing. The downstream end is adjacent to a consumer's mouth when the aerosol-generating device is in use. The downstream end may be in contact with a consumer’s lips, when in use.
[0012] The scented portion may comprise a scented ink. The scented ink may comprise the fragrance agent. The fragrance agent may constitute 1 percent by weight to 20 percent by weight, in particular 3 percent by weight to 15 percent by weight, in particular 5 percent by weight to 8 percent by weight of the scented ink.
[0013] The scented ink may be formulated by incorporating a fragrance agent into a water-based resin. For instance, the water-based resin may be formed as a dispersion of a water-soluble polymer, and a solvent component, with water (e.g. deionized water) as its main constituent. The water-soluble polymer may comprise or consist of any one of or several of acrylic, styrene-maleic anhydride, sulfonated polyester, polyamide, and polyurethane. The scented ink may comprise or consist of any one of or several of acrylic, styrene-maleic anhydride, sulfonated polyester, polyamide, and polyurethane.
[0014] For instance, an acrylic resin may be a mixture of an acrylic vanish and an acrylic emulsion, each providing different properties to the acrylic resin. As an example, an acrylic resin may be a mixture of an acrylic varnish in the amount of 15 percent by weight to 45 percent by weight of the entire composition and an acrylic emulsion in the amount of 0 percent by weight to 30 percent by weight of the entire composition.
[0015] The scented ink may comprise a water-based solvent. The water-based solvent may be or may comprise deionized water or deionized water with small amounts of other organic solvents.
[0016] The scented ink may comprise a non-water-based solvent. The non-water-based solvent may be or may comprise an organic solvent, such as cyclohexane, methanol, ethanol, ethylene glycol, diethylene glycol, triethylene glycol, polyethylene glycol, propylene glycol, butylenes glycol, pentylene glycol, hexylene glycol or poly hydric alcohol, or any combination thereof.
[0017] The scented portion, in particular the scented ink, may comprise a resin. The scented portion, in particular the scented ink, may comprise a water-based resin. The scented portion, in particular the scented ink, may comprise an acrylic resin. The fragrance agent may be incorporated into the resin, in particular the water-based or acrylic resin.
[0018] The resin, in particular the water-based resin, may comprise a water-soluble polymer. The fragrance agent may be oil-based. The fragrance agent may be hydrophilic. The scented portion, in particular the scented ink, may be transparent. The scented portion, in particular the scented ink, may be translucent. The scented portion, in particular the scented ink, may comprise color pigments.
[0019] The resin may comprise a resin base. The resin base may be acrylic, styrene-maleic anhydride, sulfonated polyester, polyamide, and polyurethane. Preferably an acrylic emulsion of acrylic monomers, for example: methyl acrylate, ethyl acrylate, butyl acrylate, 2-ethylhexyl acrylate, decyl acrylate, methyl methacrylate, ethyl methacrylate, hydroxyethyl methacrylate, butyl methacrylate, acrylonitrile, acrylic acid, methacrylic acid, itaconic acid, malic acid, fumaric acid, acrylic anhydride, methacrylic anhydride, maleic anhydride, itaconic anhydride, fumaric anhydride, styrene, substitued styrene, vinyl acetate, and other C. sub. 1 to C. sub. 12 alkyl acrylates and methacrylates, or any combination thereof.
[0020] The fragrance agent may be a natural fragrance agent or a synthetic fragrance agent. The fragrance agent, in particular the natural fragrance agent, may be hydrophilic.
[0021] The fragrance agent, in particular the natural fragrance agent, may comprise any one or any combination of the following components: 2-Cyclohexylethanol, Phenylacetaldehyde, cis-3-Octen-1-ol, 3, 3, 5-Trimethylcyclohexanol, Methyl 2-octynoate, Ligustral, 3, 3- Dimethylcyclohexyl methyl ketone, Camphor, Stemone, Linalool, Nerol oxide, Methyl phenylacetate, Benzyl alcohol, Ethyl benzoate, Hydratropaldehyde, Dimethyl cyclohexene carboxaldehyde, 4-Isopropylcyclohexanol, Menthone racemic, (E) -2, (Z) -6-Nonadienal, Benzyl acetate, Mugoul, Isomenthone, 2-sec. Butylcyclohexanone, 4-Terpineol, Fenchyl alcohol, Ocimenol, p-Cresyl acetate, alpha-Methylbenzyl acetate, 1-Borneol, Phenylacetaldehyde dimethyl acetal, alpha-Terpineol, Allyl amyl glycolate, 4-Methylacetophenone, p-Anisaldehyde, Iso Cyclo Citral, Ethyl nicotinate, Phenethyl alcohol, delta-Nonalactone, Terpineol (alpha, beta, gamma) , gamma-Nonalactone, Benzyl propionate, 2, 6-nonadienal, Ethyl phenylacetate, Citral, Hydratopic alcohol, Methoxycitronellal, Linalool oxide, Isopulegol, 3-Phenylbutanal, Cuminaldehyde, Dimethyl benzyl carbinol, L-Carvone, 2-Phenylethyl acetate, Benzylacetone, Acetanisole, Citral dimethyl acetal, Benzyl isobutyrate, Methyl salicylate, Dimethyl anthranilate, Nerol, trans-Geraniol, p-Cresyl isobutyrate, Livescone, 1- (Prop-2-enoxy) 2-phenylethane, Voiliff, Decahydro-2-naphthol, Methyl anthranilate, Hydrocinnamyl alcohol, 2-Phenoxyethanol, 2, 3-Benzopyrrole, Maltol, Cinnamic aldehyde, Methyl cinnamate, Jasmolactone, Dihydrocoumarin, Flor Acetate, Dimethyl benzyl carbinyl acetate, 1, 5-Dimethyl-bicyclo [3.2.1] octan-8-one, oxime-, Ethyl maltol, Hydroxycitronellal, Eugenyl methyl ether, Acetaldehyde ethyl phenylethyl acetal, Benzyl-tert-butanol, Phenethyl isobutyrate, Anisyl acetate, Cinnamic alcohol, 6-Methylquinoline, Allyl phenoxyacetate, Frutene, Veratraldehyde, Hydroxycitronellal dimethyl acetal, Dihydroeugenol, Cinnamyl acetate, Ethyl cinnamate, Phenoxyethyl propionate, Eugenol, Heliotropin, Cinnamyl nitrile, exo-2-Camphanyl beta-hydroxyethyl ether, Ethyl 3-phenylglycidate, Coumarin, Scentenal, Anisylpropanal, Isoeugenol, Methyl lavender ketone, 2-Phenoxyethyl isobutyrate, Vanillin, Acetaldehyde phenylethyl propyl acetal, Jasmal, Ethyl methylphenylglycidate, Ethyl vanillin, Isoeugenyl acetate, Heliotropine diethyl acetal, 2H-1, 5-Benzodioxepin-3 (4H) -one, 7-methyl-, 4- (4-Hydroxyphenyl) butanone-2, Vanillin isobutyrate, Helional, Cashmeran, Piperonyl acetone, Methyl beta-naphthyl ketone, Methyl dihydrojasmonate, and Lyral.
[0022] The fragrance agent, in particular the synthetic fragrance or the oil-based fragrance agent (or the synthetic fragrance and the oil-based fragrance agent) , may comprise any one or any combination of the following components: Limonene, Citral, Linalool, Alpha-ionone, Beta-ionone, Methyl anthranilate, Geraniol, Ethyl butyrate, Gamma-undecalactone, Delta decalactone, Gamma decalactone, Hexyl acetate, Amyl acetate, Benzaldehyde, Cinnamic aldehyde, Geranyl acetate, Aldehydes C-12, Aldehydes C-14, D-Limonene, Myrcene, Alpha-Pinene, Beta-Pinene, Citronellol, Nerol, Eugenol, Isoamyl acetate, Neryl acetate, Farnesol, Hexenol, Octanol, Nonanol, Decanol, Terpineol, Damascone, Ionone, Diethyl phthalate, Benzyl acetate, Phenethyl alcohol, Isoeugenol, Coumarin, Vanillin, Ethyl vanillin, Musk ketone, Musk xylene, Galaxolide, Vanillin, Ethyl vanillin, Coumarin, Piperonal, Cinnamaldehyde, Linalool, Cinnamic alcohol, Menthol, Menthone, Isomenthone, Neomenthol.
[0023] The scented portion may be adapted to release the fragrance agent within a predetermined temperature range, in particular only in the predetermined temperature range, in particular between minus 10 degrees Celsius and plus 60 degrees Celsius, in particular between 15 degrees Celsius and 40 degrees Celsius, in particular between 25 degrees Celsius and 35 degrees Celsius. The scented portion may be adapted to prevent the release of the fragrance agent outside of the predetermined temperature range. If not stated otherwise, a value without a sign indicates a positive value (i.e. above zero) . The scented portion may comprise a heat-activated composition, in particular enabling the release of the fragrance agent.
[0024] Using a scented portion that is adapted to release the fragrance agent only in the predetermined temperature range may allow releasing the fragrance agent specifically when the aerosol-generating device is in use.
[0025] In the context of the present invention, when reference is made to a temperature or temperature range, the temperature referred to is in particular the temperature of the scented portion, more in particular of the scented layer. In the context of the present invention, when reference is made to a temperature or temperature range, the temperature may also be the temperature of the fragrance agent.
[0026] If not stated otherwise, values related to a temperature or temperature ranges are given in degrees Celsius.
[0027] The scented portion may be adapted to release at least 30 percent by weight, in particular at least 50 percent per weight more fragrance agent at or above 25 degrees Celsius, in particular at or above 30 degrees Celsius, more in particular at or above 40 degrees Celsius than the scented portion releases at or below 20 degrees Celsius, in particular at or below 15 degrees Celsius.
[0028] For some fragrance agents or scented inks, it may not be possible to completely prevent the release of the fragrance agent outside of the predetermined temperature range. However, the scented portion may be adapted to increase the release of the fragrance agent above a predetermined temperature.
[0029] For example, the scented portion may be adapted to increase the release of the fragrance agent by at least 30 percent by weight above 25 degrees Celsius compared to the release of the fragrance agent at or below 15 degrees Celsius. The release of the fragrance agent may be specified in milligrams per time interval. In the example above, 1 milligram per time interval may be released at a temperature of 15 degrees Celsius and 1.3 milligrams per time interval (i.e. 30 percent more) may be released at a temperature of 25 degrees Celsius.
[0030] The scented portion may be adapted to increase the release of the fragrance agent by at least 30 percent by weight above 35 degrees Celsius compared to the release of the fragrance agent at or below 15 degrees Celsius or 10 degrees Celsius. The scented portion may be adapted to increase the release of the fragrance agent by at least 30 percent by weight above 40 degrees Celsius compared to the release of the fragrance agent at or below 15 degrees Celsius or 10 degrees Celsius.
[0031] The scented portion may be adapted to increase the release of the fragrance agent by at least 50 percent by weight above 25 degrees Celsius compared to the release of the fragrance agent at or below 15 degrees Celsius or 10 degrees Celsius. The scented portion may be adapted to increase the release of the fragrance agent by at least 50 percent by weight above 35 degrees Celsius compared to the release of the fragrance agent at or below 15 degrees Celsius or 10 degrees Celsius. The scented portion may be adapted to increase the release of the fragrance agent by at least 50 percent by weight above 40 degrees Celsius compared to the release of the fragrance agent at or below 15 degrees Celsius or 10 degrees Celsius.
[0032] Heat may increase the rate of evaporation of the fragrance agent. Heat may increase the release of the fragrance agent. The release rate of the fragrance agent may increase steadily with an increasing temperature. The release rate of the fragrance agent is in particular the rate, for example measured in weight or volume per time interval, with which the fragrance agent is released from the scented portion into the air.
[0033] The fragrance agent may be encapsulated with a microcapsule compound or a polymer. The fragrance agent may be coated with a microcapsule compound or a polymer. The microcapsule compound or polymer may be adapted to release the fragrance agent. The microcapsule compound or polymer may be adapted to increasingly release the fragrance agent above a predetermined temperature, in particular above 15 degrees Celsius, in particular above 25 degrees Celsius, in particular above 30 degrees Celsius, more in particular above 40 degrees Celsius. The scented portion, in particular the scented ink, may comprise the microcapsule compound or polymer.
[0034] In particular, the term “increasingly release” is defined as a positive first derivative of the release rate (e.g. defined in mg per time interval) over the temperature. For example, the release rate may increase linear with respect to the temperature, having a higher release rate at a higher temperature. The first derivative of the release rate is then a constant positive value.
[0035] Alternatively, the term “increasingly release” may be defined a positive second derivative of the release rate over the temperature. For example, the release rate over the temperature may be constant or increase linear up to a certain temperature. At or above the certain temperature, the release rate may increase quadratic over the temperature. The second derivative may be a constant positive value then. The release rate may also increase at a higher order (or even exponentially) at or above a certain temperature.
[0036] The microcapsule compound or polymer may have a glass transition temperature of between minus 10 degrees Celsius and 50 degrees Celsius, in particular between 15 degrees Celsius and 45 degrees Celsius, in particular between 25 degrees Celsius and 35 degrees Celsius.
[0037] The glass transition temperature may define a temperature at which the microcapsule compound or polymer transforms from a hard and relatively brittle "glassy" state into a viscous or rubbery state. The glass transition temperature may refer to a temperature at which the microcapsule compound or polymer starts to release the encapsulated fragrance agent, i.e. the fragrance agent is released above said temperature.
[0038] The scented portion, in particular the scented ink, may comprise a first microcapsule compound or polymer and a second microcapsule compound or polymer. The first microcapsule compound or polymer may coat or encapsulate a first fragrance agent. The second microcapsule compound or polymer may coat or encapsulate a second fragrance agent.
[0039] Different portions of the fragrance agents may be encapsulated and or coated with different microcapsule compounds or polymers. A first microcapsule compound or polymer may be adapted to release the respective encapsulated and or coated fragrance agent at above a first temperature. A second microcapsule compound or polymer may be adapted to release the respective encapsulated and or coated fragrance agent above a second temperature. The second temperature may be different from the first temperature. Different portions of the fragrance agent may be encapsulated and or coated with different microcapsule compounds or polymers.
[0040] A first microcapsule compound or polymer may have a first glass transition temperature and the second microcapsule compound or polymer may have a second glass transition temperature. The second glass transition temperature may be different from the first glass transition temperature, in particular higher than the first glass transition temperature.
[0041] For example, the first microcapsule compound or polymer may have a glass transition temperature of between minus 10 degrees Celsius and 50 degrees Celsius, in particular between 15 degrees Celsius and 45 degrees Celsius, in particular between 25 degrees Celsius and 35 degrees Celsius. The second microcapsule compound or polymer may have a glass transition temperature between minus 5 degrees Celsius and 55 degrees Celsius, in particular between 20 degrees and 50 degrees Celsius, in particular between 30 degrees Celsius and 40 degrees Celsius.
[0042] With multiple microcapsule compounds having different glass transition temperatures, it is possible to provide different scent profiles. For example, at the beginning of the aerosol-generating operation, when the aerosol-generating article is starting to get heated, the temperature at the scented portion may have a first temperature. The first temperature may be sufficient that the first microcapsule compound or polymer releases its encapsulated fragrance agent, in particular a first fragrance agent. When the aerosol-generating article is further heated, the temperature of the scented portion may also increase, such that the scented portion may have a second temperature, higher than the first temperature. The second temperature may be sufficient that the second microcapsule compound or polymer releases its encapsulated fragrance agent, in particular a second fragrance agent. In particular, the second temperature may be sufficiently high, such that the first fragrance agent is no longer released.
[0043] For example, the glass transition temperature of the first microcapsule compound or polymer is between 10 degrees Celsius and 50 degrees Celsius and the glass transition temperature of the second microcapsule compound or polymer is between 15 degrees Celsius and 55 degrees Celsius, or between 20 degrees Celsius and 60 degrees Celsius. In another example, the glass transition temperature of the first microcapsule compound or polymer is between 15 degrees Celsius and 45 degrees Celsius and the glass transition temperature of the second microcapsule compound or polymer is between 20 degrees Celsius and 50 degrees Celsius, or between 25 degrees Celsius and 55 degrees Celsius. In another example, the glass transition temperature of the first microcapsule compound or polymer is between 25 degrees Celsius and 35 degrees Celsius and the glass transition temperature of the second microcapsule compound or polymer is between 30 degrees Celsius and 40 degrees Celsius, or between 35 degrees Celsius and 45 degrees Celsius.
[0044] The microcapsule compound may comprise a gelatin-polyanion complex, gum arabic, alginate, chitosan, polyvinyl alcohol (PVA) , poly-lactic-co-glycolic acid (PLGA) , cellulose derivatives such as ethyl cellulose, gelatin, carrageenan, liposomes, polyurethanes, melamine-formaldehyde resins, or polyethylene glycol (PEG) , or any combination thereof.
[0045] The scented portion may be adapted to release the fragrance agent in response to friction applied to the scented portion. The scented portion or the release of the fragrance agent (or the scented portion and the release of the fragrance agent) may be friction-activated.
[0046] The scented portion may be brittle. The scented portion may comprise a resin polymer with low binding properties. The friction may induce local heat or mechanical degradation that may release the fragrance agent. The friction may induce micro-abrasion and may cause release of the fragrance agent.
[0047] The enables used-initiated fragrance release, in particular due to a consumer rubbing or scratching on the scented portion.
[0048] The scented portion may have a porosity of 5 percent to 30 percent, in particular of 10 percent to 25 percent, in particular of 15 percent to 20 percent. The porosity of the scented portion, in particular a scented layer of the scented portion, may be adjusted through modifications in solvent or additive content. The porosity of the scented portion, in particular a scented layer of the scented portion, may be adapted using heat treatment, in particular heat treatment for a rapid solvent evaporation.
[0049] The aerosol-generating device may comprise a downstream end adapted to receive an aerosol-generating article or to be contacted by a consumer’s lips. The scented portion, in particular the scented ink, may be arranged in proximity to the downstream end, in particular within a range of 70 millimeters, in particular within a range of 50 millimeters, in particular within a range of 30 millimeters.
[0050] A range of 70 millimeters may be defined as 0 millimeters to 70 millimeters. A range of 50 millimeters may be defined as 0 millimeters to 50 millimeters. A range of 30 millimeters may be defined as 0 millimeters to 30 millimeters.
[0051] The scented portion, in particular the scented ink, may be arranged in a distance of at least 5 millimeters, in particular at least 10 millimeters, in particular at least 20 millimeters from the downstream end of the aerosol-generating device. The downstream end of the aerosol-generating device may be adapted to receive the aerosol-generating article.
[0052] The downstream end of the aerosol-generating device may be a mouthpiece adapted to contact the consumer's lips. In use of the aerosol-generating article, the downstream end of may be adapted to be arranged in a consumer's mouth. Opposite to the downstream end, the distal end of the aerosol-generating device may be adapted to receive the aerosol-generating article. A side portion of the aerosol-generating device may be adapted to receive the aerosol-generating article.
[0053] The aerosol-generating device may comprise a power unit, a heating element and a control unit. The heating element may comprise an inductive coil adapted to heat a susceptor in the aerosol-generating article. The heating element may be adapted to heat the aerosol-generated article above a predetermined temperature, at which ingredients in the aerosol-generating article vaporize.
[0054] The scented portion, in particular the scented ink, may be adapted to release the fragrance agent in response to a temperature increase due to heat generated by the heating element. The heating element may be arranged in close proximity, in particular within 50 millimeters, in particular within 30 millimeters, more in particular within 10 millimeters, of the scented portion. The heating element may be adapted to increase the temperature of the scented portion. The heating element may be adapted to bring the temperature of the scented portion to at least 15 percent degrees Celsius, in particular above 25 degrees Celsius, more in particular above 30 degrees Celsius, in particular above 40 degrees Celsius. Arranging the heating element in close proximity to the scented portion may allow heating the scented portion without consuming additional energy because the heating element is required to heat the aerosol-generating article.
[0055] The scented portion may comprise a bonding layer. The bonding layer may be arranged on the outer surface of the housing. The scented portion may comprise one or more color layers. The one or more color layers may be arranged on the bonding layer. The scented layer may be arranged on the outermost color layer or on the bonding layer, in particular when no color layers exist. The scented layer may comprise the fragrance agent. The scented layer may comprise the first and second fragrance agent. The scented layer may comprise the resin, the water-based solvent or the non-water based solvent, or combinations thereof. The scented layer may comprise the resin and the water-based solvent. The scented layer may comprise the resin and the non-water based solvent. The scented layer may comprise the scented ink. The scented layer may comprise the microcapsule compound or polymer. The scented layer may comprise the first microcapsule compound or polymer and the second microcapsule compound or polymer.
[0056] The bonding layer may comprise an epoxy-based primer, an acrylic-based primer or a polyurethane-based primer (or combinations thereof) . The one or more color layers may comprise acrylic paints, epoxy paints, Polyurethane paints, enamel paints, latex paints, alkyd paints, powder coatings, automotive paints, high-temperature paints, and UV-curable paints, or any combination thereof. Different color layers may comprise different paints or components.
[0057] The housing may comprise plastics (such as ABS, polycarbonate, polypropylene, PET, PVC, Polyurethane, PE, PP, Polyester, PEEK, Polyphenylsulfone, Nylon, and compounds) , metals (such as aluminum or stainless steel) , metal alloys, composite materials or a combination of the previous materials.
[0058] According to a second aspect of the invention, there is provided a method of manufacturing an aerosol-generating device, in particular the aerosol-generating device as described above. The method comprises the steps of providing a housing of the aerosol-generating device, providing a scented ink comprising a fragrance agent and applying the scented ink to the housing or at least parts of the housing of the aerosol-generating device.
[0059] The aerosol-generating device is in particular the aerosol-generating device described in relation to the first aspect of the invention. The scented ink is in particular the scented ink described in relation to the first aspect of the invention. The housing is in particular the housing described in relation to the first aspect of the invention. The fragrance agent is in particular the fragrance agent described in relation to the first aspect of the invention.
[0060] The step of applying the scented ink to the housing may comprise the steps of preparing the surface of the outermost layer of the housing, applying a bonding layer to the outermost layer of the housing, optionally applying one or more color layers to the outermost bonding layer, and applying the scented ink to at least a portion of the bonding layer or a portion of one of the color layers, in particular the outermost color layer.
[0061] The scented ink may form a scented layer. The scented layer is in particular the scented layer described in relation to the first aspect of the invention.
[0062] The method may comprise the step of adjusting the porosity of the scented ink, in particular the scented layer. The method may comprise adjusting the porosity of the scented layer through modifications in the solvents or additive contents, in particular a foaming agent. The method may comprise the step of heat treating the scented layer, in particular to increase its porosity.
[0063] The step of providing the scented ink may comprise the steps of providing a resin material and adding the fragrance agent to the resin material, in particular in a mixing step.
[0064] The resin material is in particular the resin described in relation to the first aspect of the invention.
[0065] The mixing step may comprise rotation of a mixing element at least 500 revolutions per minute, in particular at least 1000 revolutions per minute. The upper limit of the rotation of the mixing element may be 10000 revolutions per minute, in particular 5000 revolutions per minute.
[0066] The resin molecules of the resin material may coat micro droplets of the fragrance agent, in particular due to the mixing step. The rotation of the mixing element, in particular at the rotational speed specified above, leads to the resin material coating micro droplets of the fragrance agent.
[0067] The resin material may comprise or may consist of an acrylic resin and or the fragrance agent is oil-based. The resin material may comprise an acrylic resin. The resin material may consist of an acrylic resin. The fragrance agent may be oil-based.
[0068] The step of providing the scented ink may comprise the steps of providing a resin material, providing a microcapsule compound or polymer, encapsulating the fragrance agent with the microcapsule compound or polymer, in particular during a coacervation process, and adding the fragrance agent, in particular the encapsulated fragrance agent, to the resin material, in particular under high speed mixing.
[0069] The microcapsule compound or polymer is in particular the microcapsule compound or polymer described in relation to the first aspect of the invention. The resin material may comprise or may consist of a water-soluble polymer.
[0070] The step of providing the scented ink may comprise the step of providing a first microcapsule compound or polymer, encapsulating a first fragrance agent with the first microcapsule compound or polymer, in particular during a coacervation process. The step of providing the scented ink may comprise the step of providing a second microcapsule compound or polymer, encapsulating a second fragrance agent with the second microcapsule compound or polymer, in particular during a coacervation process. The step of providing the scented ink may further comprise the step of adding the first fragrance agent and the second fragrance agent, in particular the encapsulated first fragrance agent and the encapsulated second fragrance agent, to the resin material, in particular under high speed mixing.
[0071] The coacervation process may comprise the steps of forming an oil-in-water emulsion, in which in particular oily droplets are disperse into a aqueous phase, forming a coating or encapsulation, in particular induced by a change in the aqueous phase, and stabilizing the coating or encapsulation, in particular by means of heat treatment, crosslinking or desolvation techniques.
[0072] According to a third aspect of the invention, there is provided a use of a scented ink on a housing of an aerosol-generating device, in particular an outer surface of the housing to release a fragrance agent into the air, in particular towards a consumer’s nose.
[0073] The fragrance agent is released during operation of the aerosol-generating device.
[0074] The scented ink is in particular the scented ink described in relation to the first aspect of the invention. The fragrance agent is in particular the fragrance agent described in relation to the first aspect of the invention. The aerosol-generating device is in particular the aerosol-generating device described in relation to the first aspect of the invention.
[0075] The aerosol-generating device of the first aspect of the invention may be used according to the method of the second aspect of the invention in any of its embodiments. The method of the second aspect of the invention may be performed using the aerosol-generating device of the first aspect of the invention in any of its embodiments. The use of a scented ink on a housing of an aerosol-generating device may be performed with the aerosol-generating device of the first aspect of the invention in any of its embodiments or by using method steps of the method of the second aspect of the inventions in any of its embodiments (or both) .
[0076] The invention is defined in the claims. However, below there is provided a non-exhaustive list of non-limiting examples. Any or more of the features of these examples may be combined with any one or more features of another example, embodiment, or aspect described herein.
[0077] Example Ex1: A device, for example an aerosol-generating device, adapted to receive or contain an aerosol-generating article, wherein the aerosol-generating device comprises a scented portion, wherein the scented portion comprises a fragrance agent, wherein the scented portion is adapted to release the fragrance agent into the air.
[0078] Example Ex2: A device, for example an aerosol-generating device, according to example Ex1, wherein aerosol-generating device comprises a housing, wherein the scented portion forms part of the housing or is coated onto the housing, in particular an outer surface of the housing.
[0079] Example Ex3: A device, for example an aerosol-generating device, according to example Ex1 or Ex2, wherein the scented portion is coated onto the entire outer surface of the housing.
[0080] Example Ex4: A device, for example an aerosol-generating device, according to example Ex1 or Ex2, wherein the scented portion is coated to specific areas of the outer surface of the housing.
[0081] Example Ex5: A device, for example an aerosol-generating device, according to any one of the preceding examples, wherein the scented portion comprises a scented ink comprising the fragrance agent, wherein the fragrance agent constitutes 1 percent by weight to 20 percent by weight, in particular 3 percent by weight to 15 percent by weight, in particular 5 percent by weight to 8 percent by weight, of the scented ink.
[0082] Example Ex6: A device, for example an aerosol-generating device, according to any one of the preceding examples, wherein the scented portion, in particular the scented ink, comprises a water-based or acrylic resin, wherein the fragrance agent is incorporated into the water-based or acrylic resin.
[0083] Example Ex7: A device, for example an aerosol-generating device, according example Ex6, wherein the resin, in particular the water-based resin, comprises a water-soluble polymer.
[0084] Example Ex8: A device, for example an aerosol-generating device, according to any one of the preceding examples, wherein the fragrance agent is oil-based.
[0085] Example Ex9: A device, for example an aerosol-generating device, according to any one of the preceding examples, wherein the fragrance agent is hydrophilic.
[0086] Example Ex10: A device, for example an aerosol-generating device, according to any one of the preceding examples, wherein the scented portion, in particular the scented ink, is transparent.
[0087] Example Ex11: A device, for example an aerosol-generating device, according to any one of the preceding examples, wherein the scented portion, in particular the scented ink, comprises color pigments.
[0088] Example Ex12: A device, for example an aerosol-generating device, according to any one of the preceding examples, wherein the scented portion is adapted to release the fragrance agent within a predetermined temperature range, in particular between -10 degrees Celsius and 60 degrees Celsius, in particular between 15 degrees Celsius and 40 degrees Celsius, in particular between 25 degrees Celsius and 35 degrees Celsius.
[0089] Example Ex13: A device, for example an aerosol-generating device, according to any one of the preceding examples, wherein the scented portion is adapted to release at least 30 weight percent, in particular at least 50 weight percent, more fragrance agent above 25 degrees Celsius, in particular above 30 degrees Celsius, more in particular above 40 degrees Celsius, than the scented portion releases below 20 degrees Celsius, more in particular below 15 degrees Celsius.
[0090] Example Ex14: A device, for example an aerosol-generating device, according to any one of the preceding examples, wherein the fragrance agent is encapsulated or coated (or encapsulated and coated) with a microcapsule compound or a polymer, wherein the microcapsule compound or polymer is adapted to increasingly release the fragrance agent above a predetermined temperature, in particular above 15 degrees Celsius, in particular above 25 degrees Celsius, in particular above 30 degrees Celsius.
[0091] Example Ex15: A device, for example an aerosol-generating device, according to any one of the preceding examples, wherein the microcapsule compound or polymer has a glass transition temperature of between -10 degrees Celsius and 50 degrees Celsius, in particular between 15 degrees Celsius and 45 degrees Celsius, in particular between 25 degrees Celsius and 35 degrees Celsius.
[0092] Example Ex16: A device, for example an aerosol-generating device, according to any one of the preceding examples, wherein different portions of the fragrance agent are encapsulated or coated (or encapsulated and coated) with different microcapsule compounds or polymers, wherein a first microcapsule compound or polymer is adapted to release the respective encapsulated or coated (or encapsulated and coated) fragrance agent at above a first temperature, and wherein a second microcapsule compound or polymer is adapted to release the respective encapsulated or coated (or encapsulated and coated) fragrance agent at above a second temperature, different from the first temperature.
[0093] Example Ex17: A device, for example an aerosol-generating device, according to any one of the preceding examples, wherein different portions of the fragrance agent are encapsulated or coated (or encapsulated and coated) with different microcapsule compounds or polymers, wherein a first microcapsule compound or polymer has a first glass transition temperature and the second microcapsule compound or polymer has a second glass transition temperature, different from the first glass transition temperature.
[0094] Example Ex18: A device, for example an aerosol-generating device, according to any one of the preceding examples, wherein the scented portion is adapted to release the fragrance agent in response to friction applied to the scented portion.
[0095] Example Ex19: A device, for example an aerosol-generating device, according example Ex18, wherein the friction induces local heat or mechanical degradation that releases the fragrance agent.
[0096] Example Ex20: A device, for example an aerosol-generating device, according to any one of the preceding examples, wherein the scented portion is brittle.
[0097] Example Ex21: A device, for example an aerosol-generating device, according to any one of the preceding examples, wherein the scented portion has a porosity of 5 percent to 30 percent, in particular of 10 percent to 25 percent, in particular of 15 percent to 20 percent.
[0098] Example Ex22: A device, for example an aerosol-generating device, according to any one of the preceding examples, wherein the aerosol-generating device comprises a downstream end, adapted to receive an aerosol-generating article or to be contacted by a consumer’s lips, wherein the scented portion, in particular the scented ink, is arranged in proximity to the downstream end, in particular within a range of 70 millimeters, in particular 50 millimeters, in particular 30 millimeters.
[0099] Example Ex23: A device, for example an aerosol-generating device, according to example Ex22, wherein the scented portion, in particular the scented ink, is arranged in a distance of at least 5 millimeters, in particular at least 10 millimeters, in particular at least 20 millimeters from the downstream end.
[0100] Example Ex24: A device, for example an aerosol-generating device, according to example Ex22 or Ex23, wherein, in use of the aerosol-generating device, the downstream end of the mouthpiece is adapted to be arranged in or adjacent to a consumer’s mouth.
[0101] Example Ex25: A device, for example an aerosol-generating device, according to any one of the preceding examples, wherein the aerosol-generating device comprises a power unit, a heating element and a control unit.
[0102] Example Ex26: A device, for example an aerosol-generating device, according to any one of the preceding examples, wherein the scented portion, in particular the scented ink, is adapted to release the fragrance agent in response to a temperature increase due to heat generated by a heating element, in particular the heating element specified in example Ex25.
[0103] Example Ex27: A method, for example a method of manufacturing an aerosol-generating device, in particular the aerosol-generating device according to any of the preceding examples, comprising the steps of: providing a housing of the aerosol-generating device, providing a scented ink comprising a fragrance agent, and applying the scented ink to the housing of the aerosol-generating device.
[0104] Example Ex28: A method, for example a method of manufacturing an aerosol-generating device, according to example Ex27, wherein the step of applying the scented ink to the housing comprises the steps of: preparing the surface of the outermost layer of the housing, applying a bonding layer to the outermost layer of the housing, optionally applying one or more color layers to the outermost bonding layer, and applying the scented ink to at least a portion of the bonding layer or a portion of one of the color layers, in particular the outermost color layer.
[0105] Example Ex29: A method, for example a method of manufacturing an aerosol-generating device, according to example Ex27 or Ex28, wherein the step of providing the scented ink comprises the steps of: providing a resin material, adding the fragrance agent to the resin material in a mixing step.
[0106] Example Ex30: A method, for example a method of manufacturing an aerosol-generating device, according to example Ex29, wherein mixing step comprises rotation of a mixing element at at least 500 revolutions per minute, in particular at least 1000 revolutions per minute.
[0107] Example Ex31: A method, for example a method of manufacturing an aerosol-generating device, according to example Ex29 or Ex30, wherein resin molecules of the resin material coat microdroplets of the fragrance agent, in particular due to the mixing step.
[0108] Example Ex32: A method, for example a method of manufacturing an aerosol-generating device, according to any one of examples Ex29 to Ex31, wherein the resin material comprises or consists of an acrylic resin.
[0109] Example Ex33: A method, for example a method of manufacturing an aerosol-generating device, according to any one of examples Ex29 to Ex32, wherein the fragrance agent is oil-based.
[0110] Example Ex34: A method, for example a method of manufacturing an aerosol-generating device, according to any one of examples Ex27 to Ex33, wherein the step of providing the scented ink comprises the steps of: providing a resin material, providing a microcapsule compound, encapsulating the fragrance agent with the microcapsule compound, in particular during a coacervation process, and adding the fragrance agent to the resin material, in particular under high-speed mixing.
[0111] Example Ex35: A method, for example a method of manufacturing an aerosol-generating device, according to any one of examples Ex27 to Ex34, wherein the resin material comprises or consists of a water-based resin.
[0112] Example Ex36: A method, for example a method of manufacturing an aerosol-generating device, according to any one of examples Ex27 to Ex35, wherein the resin material comprises or consists of a water-soluble polymer.
[0113] Example Ex37: A use of a scented ink on a housing of an aerosol-generating device, in particular an outer surface of the housing, to release a fragrance agent into the air, in particular towards a consumer’s nose.
[0114] Example Ex38: A use of a scented ink on a housing of an aerosol-generating device according to example Ex37, wherein the fragrance agent is released during operation of the aerosol-generating device.
[0115] Examples will now be further described with reference to the figures.
[0116] Fig. 1 shows a schematic front view of an aerosol-generating device for receiving an aerosol-generating article according to an embodiment of the invention.
[0117] Fig. 2 shows a schematic side view of an aerosol-generating device according to an embodiment of the present invention, during use by a consumer.
[0118] Fig. 3 shows a cross-sectional view of a part of the housing of an aerosol-generating device according to an embodiment of the present invention.
[0119] Fig. 4 shows a diagram illustrating the release of the fragrance agent depending on the temperature according to an embodiment of the present invention.
[0120] Fig. 5 shows a diagram illustrating the release of the fragrance agent depending on the temperature according to an embodiment of the present invention.
[0121] Fig. 1 show a schematic front view of an aerosol-generating device 1 for receiving an aerosol-generating article 2 according to an embodiment of the invention. The left of Fig. 1 illustrates how the aerosol-generating article 2 is inserted into an opening 3 of a downstream end 4 of the aerosol-generating device 1. The right side of Fig. 1 illustrates a state, in which the aerosol-generating article 2 arranged in the aerosol-generating device 1, in particular in the opening 4 of the downstream end 4. The downstream end 4 is an end portion of the aerosol-generating device 1 that is arranged adjacent to a consumer’s mouth, when the aerosol-generating device 1 is in use. The downstream end 4 is arranged opposite of a distal end portion 5 of the aerosol-generating device 1. The aerosol-generating device 1 comprises a housing 6. A scented portion 7 is arranged on the housing 6, in particular on an outer surface 8 of the housing 6. In the embodiment shown in Fig. 1, the scented portion 7 is located at or adjacent to the downstream end 4. It is also possible that the scented portion 7 covers the entire outer surface 8 of the housing 6 or that the scented portion 7 is arranged at a distance to the downstream end 4.
[0122] Fig. 2 shows a schematic side view of the aerosol-generating device 1 of Fig. 1 being operated by a consumer 9. In use, the downstream end 4 is arranged in close proximity to the mouth 10 of the consumer 9. In particular, the downstream end 4 is arranged closer to the mouth 10 of the consumer 9 than the distal end portion 5. The consumer 9 may draw on the aerosol-generating article 2 to activate the aerosol-generating device 1, in particular to produce aerosol from the aerosol-generating article 2. In other embodiments, the consumer 9 may draw directly on the aerosol-generating device 1. The mouth 10 of the consumer 9 may be in contact with the aerosol-generating device 1. The scented portion 7 is arranged adjacent to the mouth 10 of the consumer 9 and the nose 11 of the consumer 9. The scented portion 7 of Fig. 2 is illustrated larger than the scented portion 7 of Fig. 1. The scented portion 7 comprises a fragrance agent 12. The scented portion 7 is adapted to release the fragrance agent 12 into the air, in particular towards the nose 11 of the consumer 9.
[0123] Fig. 3 shows a cross-sectional view of a part of the housing 6 of an aerosol-generating device 1 according to an embodiment of the present invention, in particular a cross-sectional view of the scented portion 7 of the aerosol-generating device 1. The outer surface 8 of the housing 6 is defined by the outermost housing layer 13 of the housing 6. A bonding layer 14 is arranged on the outermost housing layer 13, in particular the outer surface 8 of the housing 6. One or more color layers 15 may be arranged on top of the bonding layer 14. In the embodiment shown in Fig. 3, three color layers 15 are used, in particular a first color layer 16, a second color layer 17 and a third color layer 18. On top of the color layers 15, in particular the third color layer 18, a scented layer 19 is arranged. The scented layer 19 comprises the fragrance agent 12 and is adapted to release the fragrance agent 12 into the air.
[0124] Fig. 4 illustrates exemplarily the release of the fragrance agent 12 into the air in relation to the temperature, in particular the temperature of the scented portion 7 or the scented layer (or of the scented portion 7 and the scented layer) . The X-axis denotes the temperature. The Y-axis denotes the release rate of the fragrance agent 12. The release rate may be defined in milligrams per time interval. At a first temperature 100, the fragrance agent 12 is released at a first release rate 200. As illustrated in Fig. 4, the release rate increased linear with respect to the temperature. At a second temperature 110, the fragrance agent 12 is released at a second release rate 210. Below and above the first temperature 100 and the second temperature 110, respectively, the release rate may increase linear as well (illustrated with the full line) or, for example, be constant (illustrated with the dashed line) . Other behaviors of the release rate below and above the first and second temperature 100, 110 are also possible. The first derivate of the release rate shown in Fig. 4 is a constant value.
[0125] In an exemplary embodiment, the second release rate 210 may be 30 percent or 50 percent higher than the first release rate 200. The first temperature 100 may be 15 degrees Celsius and the second temperature 110 may be 25 degrees Celsius. Other values are also possible as described above.
[0126] Fig. 5 illustrates exemplarily an alternative function of the release of the fragrance agent 12 into the air in relation to the temperature, in particular the temperature of the scented portion 7 or the scented layer (or of the scented portion 7 and the scented layer) . The X-axis denotes the temperature. The Y-axis denotes the release rate of the fragrance agent 12. Below a first temperature 100, the release of the fragrance agent 12 increases at a first rate 300 with respect to an increase in temperature. And above the first temperature 100, the release of the fragrance agent 12 increases at a second rate 310, higher than the first rate 300, with respect to an increase in temperature. The first derivate of the release rate shown in Fig. 5 may be a linear function, or a function of higher order. The first temperature 100 may be, for example, 20 degrees Celsius, 25 degrees Celsius, 30 degrees Celsius or 35 degrees Celsius.
[0127] For the purpose of the present description and of the appended claims, except where otherwise indicated, all numbers expressing amounts, quantities, percentages, and so forth, are to be understood as being modified in all instances by the term "about" . Also, all ranges include the maximum and minimum points disclosed and include any intermediate ranges therein, which may or may not be specifically enumerated herein. In this context, therefore, a number A is understood as A ± 5%of A. Within this context, a number A may be considered to include numerical values that are within general standard error for the measurement of the property that the number A modifies. The number A, in some instances as used in the appended claims, may deviate by the percentages enumerated above provided that the amount by which A deviates does not materially affect the basic and novel characteristic (s) of the claimed invention. Also, all ranges include the maximum and minimum points disclosed and include any intermediate ranges therein, which may or may not be specifically enumerated herein.
Claims
1.An aerosol-generating device, adapted to receive or contain an aerosol-generating article,wherein the aerosol-generating device comprises a scented portion,wherein the scented portion comprises a fragrance agent,wherein the scented portion is adapted to release the fragrance agent into the air.2.The aerosol-generating device according to claim 1, wherein aerosol-generating device comprises a housing, wherein the scented portion forms part of the housing or is coated onto the housing, in particular an outer surface of the housing.3.The aerosol-generating device according to claim 1 or 2, wherein the scented portion comprises a scented ink comprising the fragrance agent, wherein the fragrance agent constitutes 1 percent by weight to 20 percent by weight, in particular 3 percent by weight to 15 percent by weight, in particular 5 percent by weight to 8 percent by weight, of the scented ink.4.The aerosol-generating device according to any one of the preceding claims, wherein the scented portion, in particular the scented ink, comprises a water-based or acrylic resin, wherein the fragrance agent is incorporated into the water-based or acrylic resin.5.The aerosol-generating device according to any one of the preceding claims, wherein the scented portion is adapted to release the fragrance agent within a predetermined temperature range, in particular between -10 degrees Celsius and 60 degrees Celsius, in particular between 15 degrees Celsius and 40 degrees Celsius, in particular between 25 degrees Celsius and 35 degrees Celsius.6.The aerosol-generating device according to any one of the preceding claims, wherein the scented portion is adapted to release at least 30 weight percent, in particular at least 50 weight percent, more fragrance agent above 25 degrees Celsius, in particular above 30 degrees Celsius, more in particular above 40 degrees Celsius, than the scented portion releases below 20 degrees Celsius, more in particular below 15 degrees Celsius.7.The aerosol-generating device according to any one of the preceding claims, wherein the fragrance agent is encapsulated or coated, or encapsulated and coated, with a microcapsule compound or a polymer, wherein the microcapsule compound or polymer is adapted to increasingly release the fragrance agent above a predetermined temperature, in particular above 15 degrees Celsius, in particular above 25 degrees Celsius, in particular above 30 degrees Celsius.8.The aerosol-generating device according to any one of the preceding claims, wherein the scented portion is adapted to release the fragrance agent in response to friction applied to the scented portion.9.The aerosol-generating device according to any one of the preceding claims, wherein the scented portion has a porosity of 5 percent to 30 percent, in particular of 10 percent to 25 percent, in particular of 15 percent to 20 percent.10.The aerosol-generating device according to any one of the preceding claims, wherein the aerosol-generating device comprises a downstream end, adapted to receive an aerosol-generating article or to be contacted by a consumer’s lips, wherein the scented portion, in particular the scented ink, is arranged in proximity to the downstream end, in particular within a range of 70 millimeters, in particular 50 millimeters, in particular 30 millimeters.11.A method of manufacturing an aerosol-generating device, in particular the aerosol-generating device according to any of the preceding claims, comprising the steps of:- providing a housing of the aerosol-generating device,- providing a scented ink comprising a fragrance agent, and- applying the scented ink to the housing of the aerosol-generating device.12.The method according to claim 11, wherein the step of applying the scented ink to the housing comprises the steps of:- preparing the surface of the outermost layer of the housing,- applying a bonding layer to the outermost layer of the housing,- optionally applying one or more color layers to the outermost bonding layer, and- applying the scented ink to at least a portion of the bonding layer or a portion of one of the color layers, in particular the outermost color layer.13.The method according to claim 11 or 12, wherein the step of providing the scented ink comprises the steps of:- providing a resin material,- adding the fragrance agent to the resin material in a mixing step.14.The method according to claim 11 or 12, wherein the step of providing the scented ink comprises the steps of:- providing a resin material,- providing a microcapsule compound,- encapsulating the fragrance agent with the microcapsule compound, in particular during a coacervation process, and- adding the fragrance agent to the resin material, in particular under high-speed mixing.15.Use of a scented ink on a housing of an aerosol-generating device, in particular an outer surface of the housing, to release a fragrance agent into the air, in particular towards a consumer’s nose.
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