Aerosol-generating product, preparation method and aerosol-generating system

Abstract

The present application provides an aerosol-generating product, a preparation method and an aerosol-generating system. The aerosol-generating product comprises aerosol-generating elements, configured as columns arranged in an axial direction of the aerosol-generating product. Each aerosol-generating element comprises: a substantially spirally wound carrier having a plurality of wound layers; and an aerosol-generating substrate, configured to generate aerosols when being heated, the aerosol-generating substrates being loaded or bonded to the carrier and filling the space between adjacent wound layers. In the aerosol-generating product, each aerosol-generating element comprises a spirally wound carrier and an aerosol-generating substrate filling the space between wound layers of the carrier, which is more convenient for preparation.

Description

Aerosol generation products, preparation methods and aerosol generation systems

[0001] Cross-reference to related applications

[0002] This application claims priority to Chinese Patent Application No. 202411834040.6, filed on December 12, 2024, entitled "Aerosol Generating Article, Preparation Method and Aerosol Generating System", the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of heated non-combustible aerosol generation technology, and in particular to an aerosol generation product, preparation method and aerosol generation system. Background Technology

[0004] Tobacco products (such as cigarettes, cigars, etc.) produce tobacco smoke by burning tobacco during use. Efforts are being made to replace these tobacco-burning products by creating products that release compounds without combustion.

[0005] Examples of such products are heating devices that release compounds by heating rather than burning materials. For example, the material could be tobacco or other non-tobacco products, which may or may not contain nicotine. Known tobacco or other non-tobacco products are produced by doping or mixing aerosol-forming agents such as glycerin, flavorings, and binders into tobacco or non-tobacco materials, which generate an aerosol for the user to inhale when heated. Known tobacco or other non-tobacco products are produced by preparing tobacco materials or other non-tobacco plant tissues into granules or sheets, loading aerosol-forming agents, flavorings, and binders onto these granules or sheets, and then pressing and winding them into a cylindrical shape using a cigarette-making machine; tobacco or other non-tobacco products prepared in the above manner are disadvantageous in maintaining low draw resistance.

[0006] Application content

[0007] One embodiment of this application provides an aerosol generating article, comprising:

[0008] An aerosol generating element is configured as a columnar shape arranged along the axial direction of the aerosol-generating article; the aerosol generating element includes:

[0009] A basic spiral-wound carrier with multiple winding layers;

[0010] An aerosol generating matrix is ​​configured to generate aerosols when heated; the aerosol generating matrix is ​​loaded or bonded to the carrier and filled between adjacent wound layers.

[0011] In some embodiments, the carrier and the aerosol generating matrix are formed by spirally winding a sheet incorporating a slurry precursor; wherein the carrier is formed by spirally winding the sheet, and the aerosol generating matrix is ​​formed by the slurry precursor.

[0012] In some embodiments, the aerosol generating element further includes:

[0013] A tubular matrix wraps around and confines the carrier and aerosol generation matrix from the outside to prevent the coiled carrier and aerosol generation matrix from spreading out.

[0014] In some embodiments, the aerosol generating matrix is ​​a porous structure with internal micropores, and the internal micropores at least partially define air channels axially passing through the aerosol generating matrix.

[0015] In some embodiments, the aerosol generating matrix includes: plant tissue, fiber, aerosol forming agent, adhesive, fragrance, and water.

[0016] In some embodiments, the space between adjacent winding layers of the carrier is substantially completely filled or occupied by the aerosol generating matrix;

[0017] And / or, the aerosol generating matrix does not extend or expose itself to the carrier in the circumferential direction.

[0018] In some embodiments, the aerosol generating element further includes:

[0019] At least one or more air channels extend axially through the aerosol-generating matrix.

[0020] In some embodiments, the at least one or more air channels are formed between the aerosol generating matrix and the carrier.

[0021] In some embodiments, the air channel has a non-circular cross-section;

[0022] And / or, part of the inner surface or part of the boundary of the air channel is arc-shaped.

[0023] In some embodiments, the air passage is offset from the central axis of the carrier.

[0024] Another embodiment of this application also proposes a method for preparing an aerosol generating element for an aerosol generating article, the method comprising:

[0025] Obtain a sheet and form a slurry precursor on the sheet;

[0026] The sheet incorporating the slurry precursor is spirally wound clockwise or counterclockwise, and during the winding process, the sheet wraps around the slurry precursor on the outside.

[0027] Another embodiment of this application also proposes an aerosol generation system, comprising:

[0028] The aerosol-generating products described above; and,

[0029] Heating device, including:

[0030] A chamber for receiving the aerosol-generated product;

[0031] A heater is configured to at least heat the aerosol generating matrix of the aerosol generating article.

[0032] The above-mentioned aerosol generating products, in which the aerosol generating element includes a spirally wound carrier and an aerosol generating matrix filled between the wound layers of the carrier, are more convenient to prepare. Attached Figure Description

[0033] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0034] Figure 1 is a schematic diagram of an aerosol-generated article provided in an embodiment;

[0035] Figure 2 is a cross-sectional schematic diagram of the aerosol generating element in Figure 1 from another perspective;

[0036] Figure 3 is a schematic diagram of the formation of a slurry precursor on a sheet in the preparation of an aerosol-generating matrix according to an embodiment;

[0037] Figure 4 is a schematic diagram of the spiral winding of the sheet with the slurry precursor in Figure 3;

[0038] Figure 5 is a schematic diagram of the aerosol-generated product of Figure 1 being heated in a heating device;

[0039] Figure 6 is a schematic diagram of a slurry precursor formed on a sheet in yet another embodiment;

[0040] Figure 7 is a schematic diagram of an aerosol generating element prepared by spiral winding the slurry precursor and sheet shown in Figure 6. Embodiments of the present invention

[0041] To facilitate understanding of this application, a more detailed description of this application will be provided below in conjunction with the accompanying drawings and specific embodiments.

[0042] One embodiment of this application proposes a heated aerosol generating article comprising multiple elements assembled in the form of strips, capable of generating aerosols when heated.

[0043] For example, Figure 1 is a schematic diagram of an aerosol generating article 1000 according to one embodiment. As shown in Figure 1, 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 the direction closer to the user's drawing direction, and correspondingly, upstream is the 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, such as the direction indicated by arrow R12 in Figure 1. In 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, users can perform a suction at the downstream end of 1200 to draw in aerosols.

[0044] In the embodiment shown in Figure 1, for ease of use by ordinary 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.

[0045] 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 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.

[0046] As shown in Figure 1, the aerosol generating article 1000 includes multiple components arranged from the upstream end 1100 to the downstream end 1200:

[0047] Aerosol generating 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.

[0048] In this embodiment, the aerosol generating element 1130 is located near and defines the upstream end 1100. The aerosol generating element 1130 is described as capable of releasing volatile compounds upon heating, which can form aerosols. The aerosols described herein can be visible or invisible and can include vapors (e.g., fine particles of matter in a gaseous state, which are typically liquid or solid at room temperature) as well as droplets of gas and condensed vapor.

[0049] In an embodiment, the cooling element 1120 may be arranged immediately downstream of and adjacent to the aerosol generating element 1130. The cooling element 1120 serves two purposes: firstly, to provide downstream support for the aerosol generating element 1130; secondly, in use, volatile substances released by the aerosol generating element 1130 after heating pass downstream of the aerosol generating article 1000 along the cooling element 1120, and the volatile substances can be cooled within the cooling element 1120 to form an aerosol inhaled by the user. In an alternative embodiment shown in FIG. 1, the cooling element 1120 includes a cooling chamber 1121 extending along the length of the cooling element 1120. This axially extending cooling chamber 1121 ensures that the airflow through the cooling element 1120 is longitudinally directed without significant radial deviation. The cooling element 1120 can reduce the temperature of the aerosol stream drawn through it by means of heat transfer. The components of the aerosol will interact with the space within the cooling element 1120 and lose heat. The cooling element 1120 may include ceramic, metal, or organic polymer plastic, etc. In some embodiments, the temperature of the aerosol stream may decrease by more than 10 degrees Celsius as it is drawn through the cooling element 1120. In some embodiments, the temperature of the aerosol stream may decrease by more than 25 degrees Celsius or more than 30 degrees Celsius as it is drawn through the cooling element 1120.

[0050] Filter element 1110 is arranged immediately downstream of cooling element 1120 and defines downstream end 1200, and is adjacent to cooling element 1120 for filtration before aerosol delivery to the user. In the embodiment shown in FIG1, filter element 1110 comprises a conventional cellulose acetate or polypropylene tow filter element with low filtration efficiency.

[0051] Alternatively, in some other embodiments, the aerosol generating article 1000 may not include the cooling element 1120, and a cooling effect may be achieved by making the filter element 1110 longer, thereby providing heat exchange during the downstream delivery of the aerosol.

[0052] To assemble the aerosol-generating article 1000, the multiple components described above are aligned and tightly wrapped within the outer packaging 1160. In the embodiment shown in FIG1, the outer packaging 1160 may be conventional cigarette paper, fibrous material, organic polymer, etc.

[0053] In some embodiments, the thickness of the outer wrapping 1160 is 0.2 to 0.5 mm; more preferably, the thickness of the outer wrapping 1160 is 0.35 to 0.45 mm.

[0054] In some embodiments, the length of the aerosol generating element 1130 is between 5 and 20 mm.

[0055] As shown in Figures 1 and 2, the aerosol generating element 1130 includes:

[0056] The system comprises a basic tubular substrate 1131, a carrier 1132, and an aerosol generating matrix 1133 disposed within the substrate 1131. The aerosol generating matrix 1133 is loaded or bonded to the carrier 1132. The carrier 1132 and the aerosol generating matrix 1133 are spirally wound.

[0057] In one embodiment, the substrate 1131 wraps and confines the wound carrier 1132 and aerosol generating matrix 1133 from the outside to prevent them from spreading out.

[0058] In some embodiments, the substrate 1131 is prepared from at least one of paper tubes, such as cellulose paper tubes, metal tubes, such as aluminum foil paper tubes or tin foil tubes, or nonwoven fiber tubes, ceramic tubes, or organic polymer plastic tubes that can withstand temperatures of at least 150°C. For example, in one specific embodiment, the tubular substrate 1131 is prepared from cigarette paper or leak-proof cigarette paper.

[0059] In some embodiments, the carrier 1132 and the aerosol generating matrix 1133 are spirally wound into a cylindrical shape. In some embodiments, the carrier 1132 is a sheet spirally wound.

[0060] In some embodiments, the sheet used to form the carrier 1132 may include cellulose paper, aluminum foil, or nonwoven fabric. In some embodiments, the thickness of the sheet used to form the carrier 1132 is 0.01 to 0.50 mm; in some embodiments, the areal density of the sheet used to form the carrier 1132 is 15 to 150 g / m2.

[0061] In some embodiments, the surface of the sheet used to form the carrier 1132 is rough, which is advantageous for promoting the loading or bonding of the aerosol generation matrix 1133 to the surface of the carrier 1132. In some specific embodiments, the surface of the sheet used to form the carrier 1132 is roughened by forming indentations or textures through processes such as hydroentangling or embossing. Alternatively, the surface of the sheet used to form the carrier 1132 may be roughened by forming structures such as protrusions or burrs. In embodiments, the surface of the carrier 1132 is rough; the surface of the carrier 1132 may have structures such as indentations, textures, protrusions, or burrs.

[0062] In some embodiments, the aerosol generating matrix 1133 is a porous structure with internal micropores. In some embodiments, the porosity of the aerosol generating matrix 1133 is between 40% and 75%. In some embodiments, the micropores inside the aerosol generating matrix 1133 are randomly or disordered.

[0063] In some embodiments, the aerosol generating matrix 1133 includes:

[0064] Plant tissues, fibers, aerosol forming agents, adhesives, fragrances and flavors, and water.

[0065] In some embodiments, plant tissues include or are derived from one or more plant products or components thereof; for example, in some specific embodiments, plant tissues include leaves, bark, fibrous tissue, stems, roots, petals, fruits, etc. In aerosol generating matrix 1133, plant tissues primarily function as active ingredients in one aspect, and in another aspect serve as carriers to provide loading for other components such as aerosol forming agents and fragrances.

[0066] For example, in some embodiments, the plant tissue includes at least tobacco or tobacco-containing material that provides an active ingredient such as nicotine; in this embodiment, the plant tissue including tobacco or tobacco-containing material is used to provide an active ingredient such as nicotine in an aerosol delivered to a user. In some embodiments, the 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. Or in yet other embodiments, the plant tissue includes other plant tissues that provide other active ingredients as alternatives to nicotine. For example, in some embodiments, the other plant tissues of these alternative tobaccos may be derived from common Chinese herbal medicines or herbaceous crops; Chinese herbal medicines include one or more of the following: dandelion, apocynum venetum, jujube, wolfberry, fritillaria cirrhosa, notoginseng, malva nut, borneol, menthol, saffron, poria cocos, kudzu root, sandalwood, agastache rugosa, perilla leaf, bupleurum, isatis root, astragalus, prunella vulgaris, ginseng, white peony root, gastrodia elata, schisandra chinensis, chrysanthemum, and plantain; herbaceous crops include one or more of the following: tea, lotus leaf, mint, licorice, clove, gynostemma pentaphyllum, ginkgo leaf, mulberry leaf, perilla, jasmine, buckwheat tea, dandelion tea, honeysuckle, tartary buckwheat tea, coffee, and areca nut.

[0067] In some embodiments, to prepare the aerosol generation matrix 1133, for example, by post-injection curing of a slurry, the plant tissue is added primarily in powder form. This is advantageous for mixing the plant tissue powder with other materials to form a slurry with good flowability during preparation. In some preferred embodiments, the particle size of the plant tissue powder is between 40 and 800 mesh.

[0068] In some embodiments, the fibers in the aerosol generating matrix 1133 can provide loading capacity to load functional ingredients such as fragrances or adhesives. In some preferred embodiments, the fibers include plant fibers such as softwood pulp fibers, hardwood pulp fibers, hemp fibers, tobacco fibers, or one or more combinations of non-plant fibers such as metal fibers and synthetic fibers.

[0069] In some embodiments, the aerosol forming agent is used to generate an aerosol mist upon heating. In embodiments, the aerosol forming agent is one or more combinations of propylene glycol, glycerol, triacetin, triethyl citrate, isopropyl myristate, methyl stearate, glyceryl monocaprylate, polyols, and ammonium salts.

[0070] In some embodiments, flavorings are used to enhance or provide aroma to the aerosol. In some embodiments, flavorings typically include flavoring substances such as peppermint, apple, rose, peach, orange, tangerine peel, and cocoa, or fragrant liquid organic alcohols, organic oils, or organic lipids such as peppermint oil, menthol, rose oil, vanilla extract, cocoa butter, cinnamon ester, star anise oil, octyl lactone, lemon oil, agarwood oil, ethyl maltol, methylcyclopentenolone (MCP), 2-acetylpyrazine, 2,3,3-trimethylpyrazine, and cinnamon leaf oil. In use, when the aerosol generating matrix 1133 is heated, the flavorings form volatile aroma components and are carried downstream in the aerosol.

[0071] In some embodiments, the adhesive promotes the bonding of the components in the aerosol-generating matrix 1133. In some embodiments, the adhesive is selected from one or more combinations of methylcellulose, hydroxypropyl methylcellulose, carboxymethylcellulose, guar gum, ethylcellulose, corn starch, carrageenan, konjac gum, gellan gum, xanthan gum, gum arabic, locust bean gum, and sodium alginate.

[0072] In some embodiments, the aerosol generating matrix 1133 comprises: 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, and 10-30 parts by weight of fragrance. In some embodiments, the water content in the aerosol generating matrix 1133 is less than 12 wt%; for example, in some optional embodiments, the water content of the aerosol generating matrix 1133 is approximately between 5 and 12 wt%.

[0073] In some embodiments, the aerosol generating matrix 1133 is formed by curing a slurry precursor prepared using the above-mentioned materials as raw materials. More specifically, the aerosol generating matrix 1133 is formed by bonding the slurry precursor prepared using the above-mentioned materials as raw materials to a sheet used to form the carrier 1132, and then spirally winding the slurry precursor together with the sheet and curing it. After the slurry precursor is bonded to the sheet and spirally wound together, the sheet forms the carrier 1132, and the slurry precursor forms the aerosol generating matrix 1133.

[0074] In some embodiments, the slurry precursor forming the aerosol generating matrix 1133 includes: 10 to 80 parts by weight of plant tissue powder, 1 to 10 parts by weight of fiber, 1 to 10 parts by weight of adhesive, 10 to 50 parts by weight of smoke generator, 10 to 30 parts by weight of fragrance and flavoring, and 50 to 500 parts by weight of water.

[0075] Alternatively, in some other variations, the aerosol generating matrix 1133 may further include a sensing material, such as a sensitive metal or alloy powder, strip, sheet, or tube; the sensing material can be penetrated by a changing magnetic field and generate heat, thereby heating the aerosol generating matrix 1133.

[0076] As shown in Figure 5, in use, the aerosol generating article 1000 is received by a heating device to form an aerosol generating system, and the aerosol generating element 1130 of the aerosol generating article 1000 is heated by the heating device to generate aerosol. In the embodiment shown in Figure 5, the heating device includes:

[0077] The chamber has an opening 40; in use, the aerosol-generating article 1000 can be removably received in the chamber through the opening 40.

[0078] A heater 30, which extends at least partially within the chamber, is inserted into the aerosol generating element 1130 of the aerosol generating article 1000 when the aerosol generating article 1000 is received in the chamber, and heats the aerosol generating article 1000 to release a variety of volatile compounds, which are formed solely by heat treatment.

[0079] Cell 10 is used for power supply;

[0080] Circuit 20 is used to guide current between cell 10 and heater 30.

[0081] In the embodiment shown in Figure 5, the heater 30 is generally shaped like a pin, needle, rod, column, sheet, or plate. When the aerosol generating article 1000 is received in the chamber, the heater 30 extends from the upstream end 1100 of the aerosol generating article 1000 into the aerosol generating element 1130 to heat it and generate an aerosol. In some embodiments, the heater 30 may have a length of approximately 10 to 18 mm and an outer diameter of approximately 2 to 4 mm.

[0082] In this embodiment, when the aerosol generating article 1000 is received in the heating device, the heater 30 extends into the aerosol generating element 1130. In use, the aerosol generating element 1130 is heated to generate aerosol, which is then output downstream.

[0083] In some embodiments, the heater 30 may also be configured to at least partially surround or define a chamber arrangement; for example, the heater 30 may be configured as a tubular shape that at least partially surrounds 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 it from the outer periphery of the aerosol generating article 1000. Furthermore, when the aerosol generating article 1000 is received within a heating device, it is at least partially contained and held within the heater 30, and is then heated from the outside by the heater 30 surrounding and heating the aerosol generating element 1130 of the aerosol generating article 1000, thereby causing the aerosol generating article 1000 to release a variety of volatile compounds, which are formed solely by heat treatment. In some embodiments, the tubular heater 30 may have an inner diameter of approximately 5.8 mm to 10 mm.

[0084] In some embodiments, heater 30 includes at least one of a resistance heater, induction heater, infrared heater, microwave heater, or light heater such as a laser heater.

[0085] In some embodiments, the process of preparing the aerosol generating element 1130, which includes the carrier 1132 and the aerosol generating matrix 1133, may include:

[0086] S10, Obtain the raw materials required for preparing carrier 1132 and aerosol generation matrix 1133:

[0087] Obtain a sheet for winding the carrier 1132; and obtain raw materials for forming the aerosol generating matrix 1133, such as 10 to 80 parts by weight of plant tissue powder, 1 to 10 parts by weight of fiber, 1 to 10 parts by weight of adhesive, 10 to 50 parts by weight of smoke generator, 10 to 30 parts by weight of fragrance and flavoring and 50 to 500 parts by weight of water, and mix them to form a slurry.

[0088] S20, the slurry is bonded to the surface of the sheet by at least one or more coating processes such as scraping or casting to form a sheet 1132a with a slurry precursor 1133a having a predetermined thickness on the surface as shown in FIG3; and the slurry precursor 1133a bonded to the surface of the sheet 1132a is dried until the moisture content of the slurry precursor 1133a is controlled at 5 to 12 wt%; the sheet with the slurry precursor bonded to the surface of the predetermined thickness is cut, for example, by using a cutter to cut it into a width suitable for winding by a cigarette rolling device such as a cigarette rolling machine.

[0089] In step S20, the drying of the slurry precursor 1133a can be performed in multiple stages to gradually reduce the moisture content to the desired range of 5-12 wt%. For example, during the process of forming a predetermined thickness of slurry precursor 1133a through multiple coats, the coated slurry precursor 1133a is pre-dried at 60-120°C after each coat until the moisture content is controlled at approximately 10-20%. When the slurry precursor 1133a reaches the desired predetermined thickness after multiple coats, it is dried again until the moisture content reaches the desired range of 5-12 wt%.

[0090] As shown in Figure 3, the slurry precursor 1133a formed on the surface of sheet 1132a by a coating process such as scraping or casting has a substantially uniform thickness.

[0091] In some embodiments, the total thickness of the slurry precursor 1133a and sheet 1132a prepared in step S20 can be controlled to be 0.5–3.5 mm; and in some embodiments, the quantitative or areal density of the sheet-like material comprising the slurry precursor 1133a and sheet 1132a prepared in step S20 is controlled to be 400–3000 g / m³. 2 Among them, "quantity" is a term in the cigarette industry, referring to the mass per unit area of ​​thin or sheet-like materials; "quantity" has the same meaning as the material science term "area density".

[0092] S30, as shown by arrow P11 in Figure 4, the sheet 1132a, which incorporates the slurry precursor 1133a, is spirally wound into a cylindrical shape, so that the sheet 1132a wraps around the slurry precursor 1133a on the outside during winding. A substrate 1131 is then wrapped around or formed on the wound sheet 1132a and the slurry precursor 1133a to prevent them from spreading out. After the slurry precursor 1133a has cured, a basically cylindrical aerosol generating element 1130 is obtained.

[0093] In the prepared aerosol generating element 1130, the carrier 1132 is formed by spirally winding a sheet 1132a, and the aerosol generating matrix 1133 is formed by solidifying the spirally wound slurry precursor 1133a.

[0094] As shown in Figures 2 to 4, the aerosol generating matrix 1133 formed after spiral winding is completely bonded to and encapsulated by the carrier 1132. The aerosol generating matrix 1133 formed by spiral winding does not extend outward or expose itself to the carrier 1132 in the circumferential direction.

[0095] In the embodiment shown in Figure 2, the aerosol generating matrix 1133 and the carrier 1132 are wound in a counterclockwise spiral; or in some other embodiments, the aerosol generating matrix 1133 and the carrier 1132 are wound in a clockwise spiral.

[0096] As shown in Figures 2 to 4, the carrier 1132 comprises at least two or more spirally wound layers of sheet 1132a. In the embodiment shown in Figure 2, the spacing between adjacent spirally wound layers of the carrier 1132 is substantially completely filled or occupied by the aerosol generating matrix 1133. In this embodiment, the micropores within the cured aerosol generating matrix 1133 allow airflow to pass through it; and the micropores within the aerosol generating matrix 1133 define the air passages through the aerosol generating element 1130. Specifically, the micropores within the aerosol generating matrix 1133 are defined by at least partial shrinkage of plant tissue or fibers during the curing process of the slurry precursor 1133a, and by moisture evaporation during the drying process.

[0097] Alternatively, in some other embodiments, a gap exists between the helically wound carrier 1132 and the aerosol generating matrix 1133; and the gap defines an air passage axially through the aerosol generating matrix 1133 and / or the aerosol generating element 1130. This axially extending air passage through the aerosol generating matrix 1133 is advantageous for reducing the suction resistance of the aerosol generating element 1130.

[0098] For example, Figure 6 shows a schematic diagram of a slurry precursor 1133b bonded to a sheet 1132b in another embodiment; in Figure 6, the thickness of the slurry precursor 1133b is varied and not uniform; for example, in Figure 6, the surface of the slurry precursor 1133b may have a serrated or corrugated shape. In some embodiments, the non-uniform thickness of the slurry precursor 1133b is achieved by coating or casting the slurry to the sheet 1132b to a predetermined thickness, followed by rolling to form a serrated or corrugated shape.

[0099] Alternatively, as shown in Figure 6, the slurry precursor 1133b after rolling may include multiple continuous slurry units; each slurry unit of the slurry precursor 1133b after rolling may have a trapezoidal, fan-shaped, conical, U-shaped, V-shaped or irregular polygonal cross-sectional shape.

[0100] Figure 7 shows a schematic diagram of an aerosol generating element 1130c, which is formed by spirally winding the sheet 1132b and slurry precursor 1133b of Figure 6. As shown in Figure 7, the wound aerosol generating element 1130c has at least one or more air channels 1134c formed or defined in the carrier 1132c and the aerosol generating matrix 1133c. The at least one or more air channels 1134c define a channel path that passes through the aerosol generating matrix 1133c axially for the purpose of outputting aerosols. Furthermore, the air channels 1134c are advantageous for reducing suction resistance during suction.

[0101] As shown in Figures 6 and 7, the multiple air channels 1134c are substantially discrete; the multiple air channels 1134c formed after winding are substantially isolated from each other. In Figures 6 and 7, the multiple air channels 1134c have non-circular cross-sections. Furthermore, some inner surfaces or boundaries of the air channels 1134c are arc-shaped; specifically, for example, as shown in Figure 7, the boundary of the air channel 1134c defined by the winding layer of the carrier 1132c is arc-shaped.

[0102] In the aerosol generating element 1130c formed after winding, the air channel 1134c is offset from the central axis of the aerosol generating element 1130c and / or the carrier 1132c.

[0103] It should be noted that the preferred embodiments of this application are given in the specification and accompanying drawings, but are not limited to the embodiments described in this specification. Furthermore, those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. An aerosol-generating product, characterized in that, include: The aerosol generating element is configured as a columnar shape arranged along the axial direction of the aerosol generating article; The aerosol generating element includes: A basic spiral-wound carrier with multiple winding layers; An aerosol generating matrix is ​​configured to generate aerosols when heated; the aerosol generating matrix is ​​loaded or bonded to the carrier and filled between adjacent wound layers.

2. The aerosol-generating product as described in claim 1, characterized in that, The carrier and aerosol generating matrix are formed by spirally winding a sheet incorporating a slurry precursor; wherein the carrier is formed by spirally winding the sheet, and the aerosol generating matrix is ​​formed by the slurry precursor.

3. The aerosol-generating product as described in claim 1 or 2, characterized in that, The aerosol generating element further includes: A tubular matrix wraps around and confines the carrier and aerosol generation matrix from the outside to prevent the coiled carrier and aerosol generation matrix from spreading out.

4. The aerosol-generating article as described in claim 1 or 2, characterized in that, The aerosol generating matrix is ​​a porous structure with internal micropores, and the internal micropores at least partially define the air channels that axially pass through the aerosol generating matrix.

5. The aerosol-generating article as described in claim 1 or 2, characterized in that, The aerosol generating matrix includes: plant tissue, fiber, aerosol forming agent, adhesive, fragrance and water.

6. The aerosol-generating article as described in claim 1 or 2, characterized in that, The space between adjacent winding layers of the carrier is substantially completely filled or occupied by the aerosol generating matrix. And / or, the aerosol generating matrix does not extend or expose itself to the carrier in the circumferential direction.

7. The aerosol-generating article as described in claim 1 or 2, characterized in that, The aerosol generating element further includes: At least one or more air channels extend axially through the aerosol-generating matrix.

8. The aerosol-generating article as described in claim 7, characterized in that, The at least one or more air channels are formed between the aerosol generating matrix and the carrier.

9. The aerosol-generating article as described in claim 7, characterized in that, The air passage has a non-circular cross-section; And / or, part of the inner surface or part of the boundary of the air channel is arc-shaped.

10. The aerosol-generating article as described in claim 7, characterized in that, The air passage is offset from the central axis of the carrier.

11. A method for preparing an aerosol generating element for an aerosol generating product, characterized in that, The method includes: Obtain a sheet and form a slurry precursor on the sheet; The sheet incorporating the slurry precursor is spirally wound clockwise or counterclockwise, and during the winding process, the sheet wraps around the slurry precursor on the outside.

12. An aerosol generation system, characterized in that, include: The aerosol-generating article according to any one of claims 1 to 10; as well as, Heating device, including: A chamber for receiving the aerosol-generated product; A heater is configured to at least heat the aerosol generating matrix of the aerosol generating article.

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