Aerosol generating product and aerosol generating system
By using a multi-layered structure design, the problem of material falling off and uneven release in heated non-combustible aerosol products has been solved, thus improving cleanliness and release uniformity.
Patent Information
- Application Number
- CN202520038117.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-07
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-01-07
AI Technical Summary
In existing heated non-combustible aerosol products, tobacco or non-tobacco materials are prone to carbonization and falling off during the heating process, resulting in a decrease in the cleanliness of the heating device and uneven release of active ingredients.
The aerosol generation product adopts a multi-layer structure, including an atomizing layer, an active matrix layer, and a substrate layer. Through continuous stacking and encapsulation design, it is ensured that the active matrix layer does not directly contact the heater to avoid slag shedding, and the uniformity of aerosol generation is improved through the atomizing layer and cooling elements.
It effectively prevents materials from falling off, keeps the heating device clean, and ensures the uniform release of active ingredients and the continuous generation of aerosols, thereby improving the user experience.
Smart Images
Figure CN223873232U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of heat-not-burn aerosol generation, and in particular to an aerosol generating article and an aerosol generating system. BACKGROUND
[0002] Tobacco products, such as cigarettes, cigars, and the like, burn tobacco during use to produce tobacco smoke. Attempts have been made to provide alternatives to these burning tobacco products by creating products that release compounds without burning.
[0003] Examples of such products are heat-not-burn devices that release compounds by heating, rather than burning, a material. For example, the material can be tobacco or other non-tobacco products, which can or can not contain nicotine. Known tobacco or other non-tobacco products release an aerosol for a user to inhale by heating tobacco or non-tobacco material that has been doped or mixed with an aerosol-forming agent, such as glycerol, flavourings, and binders, etc. during use. Known tobacco or other non-tobacco products release an aerosol for a user to inhale by heating tobacco material or other non-tobacco plant tissue that has been prepared into granules or flakes and having an aerosol-forming agent, flavourings, and binders, etc. loaded onto the granules or flakes of tobacco material or other non-tobacco plant tissue, which are then compressed and wrapped into a columnar shape by a cigarette-making machine. The above-prepared tobacco or other non-tobacco products, when heated by a heating device, the tobacco material and additive material carbonize during the heating process and fall into the device during removal of the tobacco or other non-tobacco products, which is disadvantageous for keeping the heating device clean. SUMMARY
[0004] One embodiment of the present application provides an aerosol generating article, comprising:
[0005] an aerosol generating element configured to be arranged along an axial direction of the aerosol generating article; the aerosol generating element comprising a plurality of functional layers arranged continuously in a radial direction, the plurality of functional layers comprising at least:
[0006] an atomization layer comprising at least an aerosol-forming agent configured to generate an aerosol when heated;
[0007] an active substrate layer located outside the atomization layer and comprising at least plant tissue releasing one or more volatile components when heated;
[0008] a matrix layer configured to provide restriction and obstruction to the material of the active substrate layer from outside to prevent the material of the active substrate layer from seeping outwards.
[0009] In some embodiments, the aerosol generating element further comprises:
[0010] an air passage defined by the atomization layer and passing through the aerosol generating element in an axial direction.
[0011] In some embodiments, the atomization layer, the active substrate layer, and the base layer are formed by winding a substantially sheet-shaped atomization layer precursor, an active substrate layer precursor, and a base layer precursor arranged in sequence.
[0012] In some embodiments, the aerosol generating element further comprises:
[0013] a shaping layer for wrapping and confining the atomization layer, the active substrate layer, and the base layer from an outside to prevent the atomization layer, the active substrate layer, and the base layer formed by winding from being spread apart.
[0014] In some embodiments, the aerosol generating element further comprises:
[0015] a slit passing through the atomization layer, the active substrate layer, and the base layer in a radial direction of the aerosol generating element.
[0016] In some embodiments, the active substrate layer has a thickness greater than that of the atomization layer; and / or, the atomization layer has a thickness greater than that of the base layer.
[0017] In some embodiments, the atomization layer further comprises:
[0018] a carrier formed by winding a sheet and configured to load the aerosol forming agent.
[0019] In some embodiments, the active substrate layer is a porous structure through which air can pass, and has a porosity of 40% to 75%.
[0020] In some embodiments, the aerosol generating article further comprises:
[0021] a first cavity located downstream of the aerosol generating element and connected to the aerosol generating element.
[0022] Yet another embodiment of the present application proposes an aerosol generating system, comprising:
[0023] the aerosol generating article; and,
[0024] a heating device comprising:
[0025] a chamber configured to receive the aerosol generating article;
[0026] a heater configured to heat at least the aerosol generating element of the aerosol generating article.
[0027] The above aerosol generating article, in which aerosol generation and volatile components are provided by radially stacked multiple functional layers, respectively, can improve uniformity of continuous smoking and avoid problems of plant tissue such as tobacco or substitutes being dropped or adhered to a heater. BRIEF DESCRIPTION OF DRAWINGS
[0028] One or more embodiments are illustrated by way of example in the figures that form a part of this disclosure and which do not limit the present application in which like references indicate similar elements. The figures in the drawings are in simplified form and are not to precise scale as is common in profile drawings for purposes of graphical clarity.
[0029] Figure 1 is a schematic view of an aerosol generating article according to an embodiment;
[0030] Figure 2 is Figure 1 is a schematic view of the aerosol generating element according to an embodiment;
[0031] Figure 3 is Figure 2 is a schematic view of the aerosol generating element according to an embodiment;
[0032] Figure 4 is Figure 1 is a schematic view of the aerosol generating article according to an embodiment;
[0033] Figure 5 is a schematic view of an aerosol generating article according to another embodiment. DETAILED DESCRIPTION
[0034] In order to facilitate the understanding of the present application, the present application will be described in more detail below in conjunction with the drawings and specific embodiments.
[0035] One embodiment of the present application proposes a heating-type aerosol generating article including a plurality of elements assembled in the form of a rod, which is capable of generating an aerosol when heated.
[0036] For example Figure 1 is a schematic view of an aerosol generating article 1000 according to an embodiment, according to Figure 1As shown, the aerosol generating article 1000 includes an upstream end 1100 and a downstream end 1200 facing away from each other; as used herein, the terms 'upstream' and 'downstream' are used to describe the relative positions of elements or portions of elements of the aerosol generating article 1000 with respect to the direction in which a user draws air from the aerosol generating article 1000 during its use. Downstream can be a direction closer to the user's drawing direction, while upstream is correspondingly a direction away from the user; and, the upstream direction can be the direction in which external air enters the aerosol generating article 1000, and the downstream direction can be the direction in which an airflow containing aerosol exits from the aerosol generating article 1000, for example... Figure 1 The direction is indicated by the middle arrow R12. During use, the aerosol generated by heating within the aerosol generating article 1000 passes through the downstream end 1200 and exits from the downstream end 1200 before being delivered to the user. During use, the user can suction from the downstream end 1200 to inhale the aerosol.
[0037] Among them Figure 1 In the illustrated embodiment, for ease of use by typical users, the aerosol generating article 1000 has an overall elongated cylindrical structure. Alternatively, in some other variations, the aerosol generating article 1000 may be an elongated elliptical cylinder, a square prism, a polygonal prism, etc.
[0038] In some embodiments, the aerosol generating article 1000 may mimic the appearance of a conventional, lit, and smokeable cigarette. The aerosol generating article 1000 may have an outer diameter between approximately 5 mm and 12 mm (e.g., between approximately 5 mm and 10 mm). The aerosol generating article 1000 also has an overall length between approximately 40 mm and 100 mm; in alternative embodiments, the aerosol generating article 1000 has an overall length between approximately 45 mm and 55 mm.
[0039] according to Figure 1 As shown, the aerosol generating article 1000 includes multiple components arranged from the upstream end 1100 to the downstream end 1200:
[0040] Aerosol generating element 1140, support element 1130, cooling element 1120 and filter element 1110; these elements are arranged sequentially and constrained by an external enclosure 1160 to form an aerosol generating article 1000.
[0041] To assemble the aerosol-generating article 1000, the multiple components described above are aligned and tightly enclosed within the outer enclosure 1160. Figure 1In the illustrated embodiment, the outer wrapper 1160 can be conventional cigarette paper, fibrous material, organic polymer, or the like. In some embodiments, the outer wrapper 1160 has a thickness of 0.2 mm to 0.5 mm; more preferably, the outer wrapper 1160 has a thickness of 0.35 mm to 0.45 mm.
[0042] In embodiments, the aerosol generating element 1140 is used to describe an element capable of generating an aerosol, i.e., an air mist, upon heating. The aerosol described herein can be visible or non-visible, and can include vapors (e.g., fine particles of a substance that are in a gaseous state, which are typically liquids or solids at room temperature), as well as gases and droplets of condensed vapors.
[0043] In embodiments, the support element 1130 is positioned immediately downstream of the aerosol generating element 1140. In use, the support element 1130 can provide support to the aerosol generating element 1140 upstream. In particular, for example, in accordance with the description set forth in U.S. Patent No. Figure 4 As shown in U.S. Patent No. 8,808, 1 10, the support element 1130 is configured to resist downstream movement of the aerosol generating element 1140 during insertion of the pin or needle-like heater 30 into the aerosol generating element 1140 from the upstream end 1100. In some embodiments, the support element 1130 is configured to resist a penetration force of at least 2.5 N during insertion of the heater 30 into the aerosol generating element 1140. Preferably, the support element 1130 is configured to resist a penetration force of at least 4 N during insertion of the pin or needle-like heater 30 into the aerosol generating element 1140. As used herein, the term "penetration force" is used to describe the maximum insertion force during insertion of the heater 30 into the aerosol generating element 1140 and prior to reaching the maximum insertion position. More preferably, the support element 1130 has a breaking force of at least 40 N, such as at least 45 N or at least 50 N, as measured using a standard compression test.
[0044] In some embodiments, the support element 1130 can be formed from any suitable material or combination of materials. For example, the support element 1130 can be formed from one or more materials selected from the group consisting of cellulose acetate; cardboard; crimped paper, such as crimped heat-resistant paper or crimped parchment paper; and polymeric materials, such as low-density polyethylene (LDPE). In one preferred embodiment, the support element 1130 is formed from cellulose acetate.
[0045] In embodiments, the support element 1130 can comprise a hollow tubular element. In one preferred embodiment, the support element 1130 comprises a hollow cellulose acetate tube. In embodiments, the support element 1130 can have a length of between about 5 millimeters and about 15 millimeters. In one preferred embodiment, the support element 1130 has a length of about 8 millimeters.
[0046] In embodiments, the cooling element 1120 can be arranged at a position immediately downstream of the support element 1130, and contiguous with the support element 1130. In use, aerosol released after heating of the aerosol generating element 1140 passes downstream towards, and the volatile matter of the aerosol can be cooled down within the cooling element 1120 to form a temperature suitable for inhalation by a user. In Figure 1 In the optional embodiment shown in FIG. 11B, the cooling element 1120 comprises a cooling cavity 1121 extending along the length of the cooling element 1120. With the above axially extending cooling cavity 1121, the air flow through the cooling element 1120 is in the longitudinal direction without substantial radial deviation. The cooling element 1120 can serve to cool down the temperature of the stream of aerosol drawn through the cooling element 1120 by means of heat transfer. The constituents of the aerosol will interact with the space within the cooling element 1120 and lose thermal energy. The cooling element 1120 can comprise ceramic, metal or organic polymer plastic, etc. In some embodiments, the temperature of the stream of aerosol can be reduced by more than 10 degrees Celsius as it is drawn through the cooling element 1120. In some embodiments, the temperature of the stream of aerosol can be reduced by more than 25 degrees Celsius or more than 30 degrees Celsius as it is drawn through the cooling element 1120.
[0047] According to Figure 1 As shown in FIG. 11A, the aerosol-generating article 1000 further comprises:
[0048] At least one or more communication holes 1122 extending from the cooling cavity 1121 to the outer surface of the aerosol-generating article 1000 in the radial direction of the aerosol-generating article 1000. The communication holes 1122 serve to communicate the cooling cavity 1121 with the ambient atmosphere for the ambient cool air to enter the cooling cavity 1121 in suction and exchange heat with the aerosol, thereby facilitating cooling.
[0049] In embodiments, the filter element 1110 is arranged proximate to or defines the downstream end 1200 for filtration before the aerosol is delivered to a user. In typical embodiments, the filter element 1110 defines a filter tip of the aerosol-generating article 1000. In Figure 1 In the embodiment shown in FIG. 11A, the filter element 1110 comprises a low- efficiency conventional cellulose acetate or polypropylene tow filter plug. In particular in Figure 1 In the embodiment shown in FIG. 11A, the filter element 1110 is arranged immediately downstream of the cooling element 1120 and contiguous with the cooling element 1120, and defines the downstream end 1200.
[0050] In some embodiments, the aerosol generating element 1140 has a length of about 5mm to 20mm. In embodiments, the aerosol generating element 1140 comprises a plurality of functional layers arranged continuously in a radial direction; the plurality of functional layers respectively carries or defines different functions provided by the aerosol generating element 1140. Specifically according to Figures 1 to 3 As shown, the plurality of functional layers of the aerosol generating element 1140 at least comprises, arranged sequentially in a radial direction from inside to outside:
[0051] The atomization layer 1141, the active substrate layer 1142, and the substrate layer 1143.
[0052] In embodiments, the thickness of the active substrate layer 1142 is greater than the thickness of the atomization layer 1141; and the thickness of the atomization layer 1141 is greater than the thickness of the substrate layer 1143.
[0053] In embodiments, the atomization layer 1141 is close to or defines the inner side surface of the aerosol generating element 1140; the atomization layer 1141 surrounds and defines an air passage 1145 through the aerosol generating element 1140 in an axial direction. In some embodiments, the air passage 1145 is substantially circular in cross-section; or in more embodiments, the air passage 1145 can have a quadrilateral, hexagonal, polygonal, or star-shaped cross-sectional shape. The air passage 1145 is surrounded by the atomization layer 1141 during winding.
[0054] In embodiments, the atomization layer 1141 is used to generate aerosol after being heated. In embodiments, the atomization layer 1141 mainly comprises an aerosol forming agent. In embodiments, the aerosol forming agent is, for example, one or more combinations of glycerol, propylene glycol, triacetin, triethyl citrate, isopropyl myristate, methyl stearate, glycerol monocaprylate. In embodiments, the atomization layer 1141 can also comprise a flavoring agent, typically including mint flavor, apple flavor, rose flower flavor, peach flavor, orange flavor, orange peel flavor, cocoa flavor, etc. flavoring substances, or liquid organic alcohols or organic oils or organic fats with fragrance, such as at least one of menthol, menthol, rose flower oil, cassia leaf extract, cocoa oil, cinnamic acid guaiac, star anise oil, propyl octanolide, white lemon oil, linaloe oil, ethyl maltol, methyl cyclopentenolone (MCP), 2-acetylpyrazine, 2.3.3-trimethylpyrazine, and cinnamomum leaf oil. In some embodiments, the aerosol forming agent in the atomization layer 1141 is greater than 99wt%; the flavoring agent in the atomization layer 1141 can be less than 1wt%.
[0055] In embodiments, the atomization layer 1141 is only used to generate aerosol and flavoring ingredients without providing active functional ingredients such as nicotine, etc.; or in this embodiment, the atomization layer 1141 does not include tobacco material and / or active functional ingredients, etc.
[0056] In some embodiments, the aerosol forming agent and the flavorant of the atomization layer 1141 need to be loaded generally; in embodiments, the atomization layer 1141 comprises:
[0057] A carrier for loading the aerosol forming agent and / or the flavorant. In some embodiments, the carrier is wound by a sheet, and the aerosol forming agent and / or the flavorant are loaded or combined on the carrier. Or in embodiments, the atomization layer 1141 is wound by a sheet carrier combined with the aerosol forming agent and / or the flavorant.
[0058] In some embodiments, the amorphous aerosol forming agent and / or the flavorant are loaded or combined on one or both side surfaces of the carrier by coating or soaking, etc. In some embodiments, the carrier can be made of natural fibers, synthetic fibers or natural fibers and synthetic fibers as the main raw material; the carrier can be cellulose paper, dry paper, melt-blown non-woven fabric, spunlace non-woven fabric or composite non-woven fabric, etc. In embodiments, the sheet material of the carrier can be prepared by papermaking process, air-laid process, melt-blown process, spunlace process, textile process or sheet composite. In some alternative embodiments, the areal density or basis weight of the carrier is 10 g / m 2 ~ 300 g / m 2 ; the thickness is 0.01 m ~ 2.0 mm. Wherein, the "basis weight" is a term in the field of cigarettes, which refers to the mass per unit area of a thin or sheet material; the "basis weight" has the same meaning as the term "areal density" in the field of materials.
[0059] In embodiments, the active substrate layer 1142 is located radially outside the atomization layer 1141. In some embodiments, the active substrate layer 1142 comprises plant tissue providing active ingredients; the active ingredients in the aerosol output by the aerosol generating article 1000 can be mainly provided by the active substrate layer 1142. In addition, the active substrate layer 1142 acts as a buffer layer outside the atomization layer 1141 in use, which can prevent the aerosol forming agent in the atomization layer 1141 from exuding.
[0060] In use, the active substrate layer 1142 is separated from the atomization layer 1141 and arranged radially in sequence, which on the one hand is conducive to the gradual release of the active substrate to form a sustained-release, which is beneficial to maintaining the uniformity of the active ingredients for different puffs; on the other hand, the active substrate layer 1142 does not contact the heater 30 in use, which avoids problems such as the active substrate layer 1142 falling off or adhering to the surface of the heater 30 after being heated.
[0061] In embodiments, the active substrate layer 1142 at least comprises:
[0062] Plant tissue, such as powder and / or fibers derived from plant tissue. In some embodiments, to prepare the active matrix layer 1142 by post-injection curing of a slurry, the plant tissue is mainly added in powder form, which is advantageous for mixing the plant tissue raw materials with other materials to form a slurry with good flowability during preparation. In some embodiments, to enable the plant tissue to also have a certain loading capacity to load other additives such as fragrances or adhesives, the plant tissue also contains appropriate plant tissue fibers to maintain the loading capacity.
[0063] In some embodiments, the particle size of the plant tissue powder is between 40 mesh and 1000 mesh.
[0064] In some embodiments, the plant tissue includes at least tobacco material that provides an active ingredient such as nicotine. In this embodiment, the active matrix layer 1142 is used to provide an active ingredient such as nicotine in an aerosol delivered to the user; the active matrix layer 1142 includes or is derived from one or more plant products or components thereof; for example, in some specific embodiments, the active matrix layer 1142 includes leaves, bark, fibrous tissue, stems, roots, petals, fruits, etc. of a plant; for example, in one specific embodiment, the active matrix layer 1142 includes or is derived from one or more plant varieties or components thereof, and the plant variety is tobacco. For example, in one specific embodiment, the active matrix layer 1142 includes a mixture of tobacco and plants such as traditional Chinese medicine. The active matrix layer 1142 may include tobacco or tobacco-containing material; for example, tobacco or tobacco-containing material may include any of the following: tobacco leaves, tobacco vein fragments, flue-cured tobacco leaves, sun-cured tobacco leaves, burley tobacco leaves, aromatic tobacco leaves, tobacco stems, reconstituted tobacco leaves, homogenized tobacco, extruded tobacco, tobacco pulp, cast tobacco, and expanded tobacco.
[0065] Alternatively, in some embodiments, the active matrix layer 1142 may include other plant tissues that provide other active ingredients to replace nicotine. For example, in some embodiments, these other plant tissues that replace tobacco may be derived from common Chinese herbal medicines or herbal crops; Chinese herbal medicines may include one or more of the following: Angelica sinensis, Cassia tora, Taraxacum mongolicum, Apocynum venetum, Ziziphus jujuba, Lycium barbarum, Fritillaria cirrhosa, Panax notoginseng, Malva nut, Borneol, Menthol, Saffron, Lonicera japonica, Poria cocos, Pueraria lobata, Dalbergia odorifera, Aristolochia debilis, Perilla frutescens, Bupleurum chinense, Isatis indigotica, Astragalus membranaceus, Prunella vulgaris, Ginseng, Paeonia lactiflora, Gastrodia elata, Schisandra chinensis, etc.; herbal crops may include one or more of the following: tea leaves, lotus leaves, licorice, cloves, chrysanthemum, star anise, mulberry leaves, bay leaves, Perilla frutescens, Amomum villosum, Citrus reticulata peel, Gynostemma pentaphyllum, lavender, rose, jasmine, buckwheat tea, Roselle, Lily, Fraxinus chinensis, Nardostachys jatamansi, Abrus precatorius, Saussurea costus, etc.
[0066] In some embodiments, the active substrate layer 1142 includes an aerosol forming agent and / or a flavorant. The aerosol forming agent is used to increase or augment the amount of aerosol generated; the flavorant is used to increase or provide a flavor to the aerosol. In embodiments, the aerosol forming agent is one or more of, for example, glycerin, propylene glycol, triacetin, triethyl citrate, isopropyl myristate, methyl stearate, glycerol monocaprylate, in combination. In some embodiments, the flavorant generally includes a mint flavor, an apple flavor, a rose flower flavor, a peach flavor, an orange flavor, a citrus peel flavor, a cocoa flavor, or the like flavoring substance, or a liquid organic alcohol or organic oil or organic ester having a flavor such as at least one of menthol, menthone, rose flower oil, cassia leaf extract, cocoa oil, cinnamic aldehyde, star anise oil, octalactone, bergamot oil, linaloe oil, ethyl maltol, methyl chavicol (MCP), 2-acetyl pyrazine, 2,3,3-trimethyl pyrazine, cinnamomum leaf oil. In this embodiment, the flavorant is included in the active substrate layer 1142 and is supported by the tobacco material or plant tissue.
[0067] In some embodiments, the active substrate layer 1142 further includes a binder; the binder facilitates the binding of the components in the active substrate layer 1142 in use; for example, in some specific embodiments, the binder is or includes at least one of gum arabic, casein, dextrin, sodium carboxymethyl cellulose, starch, polyvinyl alcohol, guar gum, and the like.
[0068] In some embodiments, the active substrate layer 1142 further includes water. In some alternative embodiments, the active substrate layer 1142 has a water content of less than 12 wt%; for example, in some alternative embodiments, the active substrate layer 1142 has a water content of approximately between 5 wt% and 12 wt%.
[0069] In some embodiments, the active substrate layer 1142 is a porous structure through which air flow can pass. In embodiments, the active substrate layer 1142 has a large number of microporous pores therein, such that the active substrate layer 1142 is in a porous form. The porous framework of the active substrate layer 1142 is defined by the plant tissue. In some embodiments, the active substrate layer 1142 has a porosity of between 40% and 75%.
[0070] In some embodiments, the active substrate layer 1142 includes 10 to 80 parts by weight of plant powder, 1 to 10 parts by weight of plant fiber, 1 to 10 parts by weight of binder, 10 to 50 parts by weight of aerosol forming agent, and 10 to 30 parts by weight of flavorant.
[0071] In some embodiments, the active substrate layer 1142 has a thickness of 1.0 mm to 5.0 mm.
[0072] In some embodiments, the active substrate layer 1142 is obtained by solidifying an injectable slurry precursor including the above raw materials.
[0073] In some embodiments, the base layer 1143 is bonded to the radially outer side of the active substrate layer 1142. In some embodiments, the base layer 1143 provides bonding of the active substrate layer 1142 and provides restriction and blocking of the material of the active substrate layer 1142 to the outside to prevent the material of the active substrate layer 1142 from seeping outwards.
[0074] In some embodiments, the base layer 1143 includes at least one of cellulose paper, aluminum foil paper, or non-woven fabric, etc. In some embodiments, the thickness of the base layer 1143 is between 0.01 mm and 0.50 mm.
[0075] In some embodiments, the atomization layer 1141, the active substrate layer 1142, and the base layer 1143 are formed by winding a precursor that is arranged in sequence. For example Figure 3 A schematic diagram of the base layer precursor 1143a, the active substrate layer precursor 1142a, and the atomization layer precursor 1141a before winding is shown; in Figure 3 In some embodiments, the base layer precursor 1143a, the active substrate layer precursor 1142a, and the atomization layer precursor 1141a are arranged in sequence, which is advantageous for winding to prepare the aerosol generating element 1140.
[0076] In some embodiments, the preparation of the aerosol generating element 1140 can include:
[0077] S10, obtaining a base layer precursor 1143a, such as cellulose paper, aluminum foil paper, or non-woven fabric, etc.
[0078] S20, obtaining raw materials required for preparing the active substrate layer 1142, such as:
[0079] 10-80 parts by weight of plant tissue powder, 1-10 parts by weight of fiber, 1-10 parts by weight of adhesive, 10-50 parts by weight of aerosol forming agent, 10-30 parts by weight of flavoring, and 50-500 parts by weight of water, and mixing them to form a slurry;
[0080] bonding the slurry to the surface of the base layer precursor 1143a by at least one or more coating processes, such as doctor blade coating or casting, etc., to form Figure 3 In some embodiments, the surface shown in the above has a predetermined thickness of the active substrate layer precursor 1142a; and drying the active substrate layer precursor 1142a bonded to the surface of the base layer precursor 1143a to control the moisture content thereof to be between 5 wt% and 12 wt%.
[0081] In step S20, the drying of the active matrix layer precursor 1142a can be performed in multiple stages to gradually reduce the moisture content to the desired range of 5 wt% to 12 wt%. For example, during the process of forming an active matrix layer precursor 1142a of a predetermined thickness through multiple coats, the coated active matrix layer precursor 1142a is pre-dried at 60 to 120°C after each coat until the moisture content is controlled at approximately 10 wt% to 20 wt%. When the active matrix layer precursor 1142a reaches the desired predetermined thickness after multiple coats, it is dried again until the moisture content reaches the desired range of 5 wt% to 12 wt%.
[0082] according to Figure 3 As shown, the active matrix layer precursor 1142a, formed on the surface of the substrate layer precursor 1143a by a coating process such as blade coating or casting, has a substantially uniform thickness. In some embodiments, the areal density or basis weight of the active matrix layer precursor 1142a is 400 g / m³. 2 ~3000g / m 2 .
[0083] S30, obtain the raw materials required for preparing the atomization layer 1141, such as a sheet used as a carrier, and load the aerosol forming agent and fragrance onto the sheet to obtain the atomization layer precursor 1141a;
[0084] The atomizing layer precursor 1141a is laminated or stacked on the active matrix layer precursor 1142a to form Figure 3 The multi-layered arrangement is shown.
[0085] S40, will obtain Figure 3 The matrix layer precursor 1143a, active matrix layer precursor 1142a and atomizing layer precursor 1141a, which are arranged in a stacked manner, are cut, for example, with a cutter to a width suitable for winding by a cigarette rolling device, such as a cigarette rolling machine, and then wound into a cylindrical shape.
[0086] In the embodiments, according to Figures 1 to 2 As shown, the aerosol generating element 1140 also includes:
[0087] The forming layer 1144 may typically include a metal foil, such as aluminum foil; the forming layer 1144 wraps and confines the wound atomizing layer 1141, active matrix layer 1142, and base layer 1143 from the outside to prevent them from spreading out. For example, the forming layer 1144 may be formed by winding forming paper containing aluminum.
[0088] In the embodiments, according to Figures 1 to 2 As shown, the aerosol generating element 1140 also includes:
[0089] A slit 1146 extends from the air passage 1145 to the shaped layer 1144 in the radial direction of the aerosol generating element 1140. Alternatively, the slit 1146 extends through the atomizing layer 1141, the active substrate layer 1142, and the base layer 1143 in the radial direction of the aerosol generating element 1140. In an embodiment, the slit 1146 is formed by shrinkage of the joint surface of the circumferentially wound atomizing layer 1141, the active substrate layer 1142, and the base layer 1143 after curing. In an embodiment, the slit 1146 extends through the aerosol generating element 1140 in the axial direction.
[0090] In some embodiments, the slit 1146 has a substantially uniform or constant width. For example, the slit 1146 has a width of about 0.2 mm to about 2.0 mm. Alternatively, in other embodiments, the slit 1146 has a varying width. For example, the slit 1146 has a gradually varying width in the radial direction of the aerosol generating element 1140.
[0091] In an embodiment, the atomizing layer 1141 and the active substrate layer 1142 each contain an aerosol forming agent and / or a flavorant; this is advantageous for maintaining a uniform amount of aerosol and flavor release during heating of the aerosol generating article 1000.
[0092] According to Figure 4 As shown in FIG. 1, in use, the aerosol generating article 1000 is received in a heating device to form an aerosol generating system, and an aerosol is generated by heating the aerosol generating element 1140 of the aerosol generating article 1000 by the heating device. According to the embodiment shown in FIG. 2, the aerosol generating article 1000 is received in a chamber 40 of the heating device. Figure 4 As shown in FIG. 2, the heating device includes:
[0093] a chamber 40 having an open end 40; in use, the aerosol generating article 1000 is removably received in the chamber 40 through the open end 40 of the chamber 40;
[0094] a heater 30 extending at least partially within the chamber 40 and inserted into the aerosol generating element 1140 of the aerosol generating article 1000 when the aerosol generating article 1000 is received in the chamber 40 to heat the aerosol generating element 1140, thereby causing the aerosol generating article 1000 to release volatile compounds and form the volatile compounds only by the heating process;
[0095] a power supply 10 for supplying power;
[0096] a circuit 20 for directing an electric current between the power supply 10 and the heater 30.
[0097] In Figure 5In the illustrated embodiment, the heater 30 is generally in the shape of a pin or needle or rod or bar or column or sheet or plate. When the aerosol generating article 1000 is received in the chamber, the heater 30 extends into the aerosol generating element 1140 from the upstream end 1100 of the aerosol generating article 1000 to heat, to generate an aerosol. In some embodiments, the heater 30 can have a length of about 10-18 mm and an outer diameter of about 2-4 mm.
[0098] In embodiments, when the aerosol generating article 1000 is received in the heating device, the heater 30 extends into the aerosol generating element 1140. In use, the aerosol is generated by the aerosol generating element 1140 being heated and is output downstream. More specifically, the heater 30 is inserted into and contacts the atomizing layer 1141 of the aerosol generating element 1140 to heat. Also, the heater 30 is not in direct contact with the active material layer 1142; the active material layer 1142 is heated indirectly by the atomizing layer 1141 receiving heat from the heater 30.
[0099] In some embodiments, the heater 30 can also be configured to be at least partially disposed around or circumscribe the chamber; for example, the heater 30 is configured to be in the shape of a tube at least partially around the chamber. When the aerosol generating article 1000 is received in the chamber, the heater 30 at least partially surrounds or encloses the aerosol generating article 1000 and heats from the outer periphery of the aerosol generating article 1000. Also, when the aerosol generating article 1000 is received in the heating device, at least partially contained and held in the heater 30, the heater 30 heats from the outside around the aerosol generating element 1140 of the aerosol generating article 1000, thereby causing the aerosol generating article 1000 to release volatile compounds and form the volatile compounds only by the heating process. In some embodiments, the tubular heater 30 can have an inner diameter of about 5.8-10 mm.
[0100] In some embodiments, the heater 30 includes or is at least one of a resistive heater, an inductive heater, an infrared heater, a microwave heater, or a light heater such as a laser heater.
[0101] In yet other embodiments, the aerosol generating article 1000 can have more or fewer functional elements. For example Figure 5 A schematic view of an aerosol generating article 1000b of yet another embodiment is shown; in this embodiment, the aerosol generating article 1000b includes, arranged in the outer wrapper 1160b from the upstream end 1100b to the downstream end 1200b:
[0102] the aerosol generating element 1140b and the filter element 1110b.
[0103] In Figure 5 In the illustrated embodiment, the aerosol generating element 1140b is supported downstream by the filter element 1110b. And the aerosol generated by the aerosol generating element 1140b is filtered and cooled downstream by the filter element 1110b.
[0104] In Figure 5 In the illustrated embodiment, the aerosol generating element 1140b comprises, in succession and continuously along a radial direction from inside to outside, an atomization layer 1141b, an active substrate layer 1142b, a matrix layer 1143b, and a shaping layer 1144b; the atomization layer 1141b surrounds and defines an air passage 1145b.
[0105] In Figure 5 In the illustrated embodiment, the filter element 1110b defines a first cavity 1111b and a second cavity 1112b.
[0106] In an embodiment, the first cavity 1111b is proximate to and connected to the aerosol generating element 1140b; in some embodiments, the first cavity 1111b can provide storage and buffering on the path of aerosol downstream transmission; in yet another aspect, the first cavity 1111b can help reduce the draw resistance of the aerosol generating article 1000b during smoking.
[0107] In an embodiment, the second cavity 1112b is proximate to or connected to the downstream end 1200b. During smoking, the aerosol carrying or entraining one or more components generated by the active particulate matter passes through the second cavity 1112b and is then output; the second cavity 1112b can be used to facilitate further mixing of the aerosol with the components carried or entrained by the active particulate matter, making the taste of the aerosol output downstream more uniform.
[0108] In some embodiments, at least part of the cross-sectional area of the first cavity 1111b and / or the second cavity 1112b is variable. In some embodiments, at least part of the cross-sectional area of the first cavity 1111b decreases in the direction downstream. And, at least part of the cross-sectional area of the second cavity 1112b increases in the direction downstream.
[0109] It should be noted that the specification and drawings of the present application provide the best mode of the application, but are not limited to the embodiments described in the specification, and further, those of ordinary skill in the art can make improvements or modifications based on the above description, and all such improvements and modifications shall fall within the scope of the appended claims of the present application.
Claims
1. An aerosol-generating article, characterized in that, Comprising: an aerosol generating element configured to be arranged along an axial direction of the aerosol generating article; the aerosol generating element comprises a plurality of functional layers arranged continuously in a radial direction, the plurality of functional layers at least comprising: an atomization layer comprising at least an aerosol forming agent configured to generate an aerosol when heated; an active substrate layer located outside the atomization layer and comprising at least plant tissue releasing one or more volatile components when heated; a matrix layer configured to provide restriction and barrier to the material of the active substrate layer from outside to prevent the material of the active substrate layer from exuding outward.
2. An aerosol-generating article according to claim 1, wherein, the aerosol generating element further comprises: an air passage defined by the atomization layer and passing through the aerosol generating element along the axial direction.
3. An aerosol-generating article according to claim 1 or 2, wherein, the atomization layer, the active substrate layer and the matrix layer are formed by winding a substantially sheet-shaped atomization layer precursor, an active substrate layer precursor and a matrix layer precursor arranged in sequence.
4. An aerosol-generating article according to claim 3, wherein, the aerosol generating element further comprises: a shaping layer for wrapping and restricting the atomization layer, the active substrate layer and the matrix layer from outside to prevent the atomization layer, the active substrate layer and the matrix layer formed by winding from spreading apart.
5. An aerosol-generating article according to claim 1 or 2, wherein the aerosol generating element further comprises: a slit passing through the atomization layer, the active substrate layer and the matrix layer along the radial direction of the aerosol generating element.
6. An aerosol-generating article according to claim 1 or 2, wherein the thickness of the active substrate layer is greater than the thickness of the atomization layer; and / or, the thickness of the atomization layer is greater than the thickness of the matrix layer.
7. An aerosol-generating article according to claim 1 or 2, wherein the atomization layer further comprises: a carrier formed by winding a sheet material and configured to load the aerosol forming agent.
8. An aerosol-generating article according to claim 1 or 2, wherein, the active substrate layer is a porous structure through which air flow can pass and has a porosity of 40% to 75%.
9. An aerosol-generating article according to claim 1 or 2, wherein, Further comprising: a first cavity located downstream of the aerosol generating element and connected to the aerosol generating element.
10. An aerosol-generating system comprising, Comprising: the aerosol generating article of any one of claims 1 to 9; and, a heating device comprising: a chamber for receiving the aerosol generating article; a heater configured to heat at least the aerosol generating element of the aerosol generating article.