Aerosol generating product and aerosol generating system
By combining a spiral-wound carrier and an aerosol generation matrix, the high absorption resistance problem of existing heat-not-burning aerosol generation products is solved, achieving low resistance and stable aerosol generation effect.
Patent Information
- Application Number
- CN202423074577.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-12
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2034-12-12
AI Technical Summary
Existing heat-not-burn aerosol generating products have shortcomings in maintaining low absorption resistance, especially the wound structure of the aerosol generating matrix, which is prone to dispersing when heated, resulting in excessive airflow resistance.
The aerosol generating matrix is constructed by combining a spirally wound carrier and an aerosol generating matrix. The aerosol generating matrix is fixed by the spirally wound carrier, forming a porous structure to reduce resistance. The carrier wraps around the outside of the matrix to prevent it from spreading out, while microporous air channels are formed inside the matrix to optimize airflow.
It achieves low absorption resistance in aerosol-generated products during heating, ensuring smooth airflow and preventing the aerosol-generated matrix from dispersing during heating, thus improving the user experience.
Smart Images
Figure CN223745745U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of heating-not-burning 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 products that release compounds without burning.
[0003] Examples of such products are heating 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 in which an aerosol-forming agent, such as glycerol, flavourings, and binders, etc., is incorporated or mixed. 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 into granules or flakes, and loading aerosol-forming agents, flavourings, and binders, etc., onto the granules or flakes of tobacco material or other non-tobacco plant tissue, and then compressing and winding into a columnar shape by a cigarette making machine. The above prepared tobacco or other non-tobacco products are not conducive to maintaining low resistance to draw. SUMMARY
[0004] One embodiment of the present application provides an aerosol generating article, comprising:
[0005] an aerosol generating element configured as a columnar shape arranged along an axial direction of the aerosol generating article; the aerosol generating element comprising:
[0006] a substantially spiral-wound carrier having a plurality of wound layers;
[0007] an aerosol generating substrate configured to generate an aerosol when heated; the aerosol generating substrate being loaded or integrated with the carrier and filled between adjacent wound layers.
[0008] In some embodiments, the carrier and the aerosol generating substrate are formed by spiral winding a sheet material integrated with a slurry precursor; wherein the carrier is formed by spiral winding the sheet material, and the aerosol generating substrate is formed by the slurry precursor.
[0009] In some embodiments, the aerosol generating element further comprises:
[0010] a tubular base wrapping and confining the carrier and the aerosol generating substrate from an outside to prevent the wound carrier and the aerosol generating substrate from unwinding.
[0011] In some embodiments, the aerosol generating substrate is a porous structure having microporous pores inside, and an air passage axially passing through the aerosol generating substrate is at least partially defined by the microporous pores inside.
[0012] In some embodiments, the aerosol generating substrate comprises plant tissue, fiber, aerosol forming agent, adhesive, essence, flavor and water.
[0013] In some embodiments, the space between adjacent wound layers of the carrier is substantially completely filled or occupied by the aerosol generating substrate;
[0014] And / or, the aerosol generating substrate is not circumferentially protruding or exposed outside the carrier.
[0015] In some embodiments, the aerosol generating element further comprises:
[0016] At least one or more air passages axially passing through the aerosol generating substrate.
[0017] In some embodiments, the at least one or more air passages are formed between the aerosol generating substrate and the carrier.
[0018] In some embodiments, the air passage has a non-circular cross section;
[0019] And / or, part of the inner surface or part of the boundary of the air passage is circular arc shaped.
[0020] In some embodiments, the air passage is deviated from the central axis of the carrier.
[0021] Yet another embodiment of the present application further proposes a preparation method of an aerosol generating element for an aerosol generating article, the method comprising:
[0022] Obtaining a sheet and forming a slurry precursor on the sheet;
[0023] Spirally winding the sheet combined with the slurry precursor clockwise or counterclockwise, and wrapping the sheet on the outside of the slurry precursor during winding.
[0024] Yet another embodiment of the present application further proposes an aerosol generating system, comprising:
[0025] The aerosol generating article described above; and,
[0026] A heating device comprising:
[0027] A chamber for receiving the aerosol generating article;
[0028] a heater configured to heat at least the aerosol generating substrate of the aerosol generating article.
[0029] The above aerosol generating article, the aerosol generating element includes a spiral wound carrier and an aerosol generating substrate filled between the wound layers of the carrier, which is more convenient for preparation. BRIEF DESCRIPTION OF DRAWINGS
[0030] One or more embodiments are illustrated by way of example in the figures that form a part of this disclosure and which are shown by way of illustration in the drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like elements. The drawings are not necessarily to scale, the emphasis instead being placed upon illustrating the principles of the embodiments.
[0031] Figure 1 is a schematic view of an aerosol generating article according to an embodiment;
[0032] Figure 2 is Figure 1 is a cross-sectional view of the aerosol generating element from another perspective;
[0033] Figure 3 is a schematic view of forming a slurry precursor on a sheet in the preparation of an aerosol generating substrate according to an embodiment;
[0034] Figure 4 is a schematic view of a sheet incorporating a slurry precursor according to Figure 3
[0035] Figure 5 is a schematic view of an aerosol generating article of Figure 1 according to the heating device;
[0036] Figure 6 is a schematic view of a slurry precursor formed on a sheet according to another embodiment;
[0037] Figure 7 is a schematic view of an aerosol generating element prepared by spiral winding the slurry precursor and the sheet according to Figure 6 DETAILED DESCRIPTION
[0038] 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.
[0039] One embodiment of the present application proposes a heated aerosol generating article including a plurality of elements assembled in the form of a rod, which is capable of generating an aerosol when heated.
[0040] For example Figure 1 is a schematic view of an aerosol generating article 1000 according to an embodiment, according to Figure 1 As shown, the aerosol-generating article 1000 includes an upstream end 1100 opposite a downstream end 1200. 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 on the aerosol-generating article 1000 during its use. Downstream can be the direction towards which a user draws, and upstream can be the direction away from the user; and, upstream can be the direction in which external air enters the aerosol-generating article 1000, and downstream can be the direction in which an aerosol-containing air flow is output from the aerosol-generating article 1000, for example Figure 1 In use, aerosol generated within the aerosol-generating article 1000 passes through the downstream end 1200 and is delivered to a user after exiting the aerosol-generating article 1000 from the downstream end 1200. In use, a user can draw on the downstream end 1200 in order to inhale the aerosol.
[0041] In which in Figure 1 In the illustrated embodiment, the aerosol-generating article 1000 has an overall appearance of a longitudinally elongate cylindrical shape, based on the convenience of typical user draw usage. Alternatively, in yet other variant embodiments, the aerosol-generating article 1000 can have an overall appearance of a longitudinally elongate elliptical cylindrical shape, a square cylindrical shape, a polygonal cylindrical shape, or the like.
[0042] In some embodiments, the aerosol-generating article 1000 can have an appearance that mimics the appearance of a conventional, lightable, post-draw cigarette. The aerosol-generating article 1000 can have an outer diameter of between approximately 5 millimeters and 12 millimeters, for example between approximately 5 millimeters and 10 millimeters. Further, the aerosol-generating article 1000 can have a total length of between approximately 40 millimeters and 100 millimeters, and in alternative embodiments, the aerosol-generating article 1000 can have a total length of approximately 45 millimeters and 55 millimeters.
[0043] According to Figure 1 As shown, the aerosol-generating article 1000 includes a plurality of elements arranged in series from the upstream end 1100 to the downstream end 1200:
[0044] An aerosol-generating element 1130, a cooling element 1120, and a filter element 1110. These elements are arranged in series and are circumscribed by an outer wrapper 1160 to form the aerosol-generating article 1000.
[0045] In embodiments, the aerosol generating element 1130 is proximate to and bounds the upstream end 1100. The aerosol generating element 1130 is used to describe an element capable of releasing volatile compounds upon heating, which can form an aerosol. The aerosol described herein can be visible or invisible, and can include vapour (e.g. fine particles of a substance that are in a gaseous state, which are typically liquid or solid at room temperature), as well as gas and droplets of condensed vapour.
[0046] In embodiments, the cooling element 1120 can be arranged at a position immediately downstream of the aerosol generating element 1130, and contiguous with the aerosol generating element 1130. The cooling element 1120 is used to provide support to the aerosol generating element 1130 downstream, on the one hand; on the other hand, in use, the volatile substances released after the aerosol generating element 1130 is heated pass along the cooling element 1120 towards the downstream of the aerosol generating article 1000, and the volatile substances can be cooled down within the cooling element 1120 to form an aerosol inhaled 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] The filter element 1110 is arranged immediately downstream of the cooling element 1120 and bounds the downstream end 1200, and contiguous with the cooling element 1120, for filtering the aerosol before it is delivered to a user. In Figure 1 In the embodiment shown in FIG. 11C, the filter element 1110 comprises a low filter efficiency conventional cellulose acetate or polypropylene tow filter plug.
[0048] Alternatively, in yet other embodiments, the aerosol generating article 1000 can not comprise a cooling element 1120, and the cooling effect is provided by having the filter element 1110 with a longer length, in turn providing heat exchange of the aerosol during its downstream delivery.
[0049] To assemble the aerosol-generating article 1000, the above-described elements are aligned and tightly wrapped within the outer wrapper 1160. In Figure 1 In the illustrated embodiment, the outer wrapper 1160 can be conventional cigarette paper, a fibrous material, an organic polymer, etc.
[0050] In some embodiments, the outer wrapper 1160 has a thickness of 0.2 to 0.5 mm; more preferably, the outer wrapper 1160 has a thickness of 0.35 to 0.45 mm.
[0051] In some embodiments, the aerosol generating element 1130 has a length of 5 to 20 mm.
[0052] According to Figures 1 to 2 As shown, the aerosol generating element 1130 includes:
[0053] a substantially tubular base 1131, and a carrier 1132 and an aerosol generating substrate 1133 disposed within the base 1131. The aerosol generating substrate 1133 is loaded or combined with the carrier 1132. The carrier 1132 and the aerosol generating substrate 1133 are spirally wound.
[0054] In embodiments, the base 1131 wraps and restricts the wound carrier 1132 and aerosol generating substrate 1133 from spreading out from the outside.
[0055] In some embodiments, the base 1131 is made of at least one of a paper tube, such as a cellulose paper tube, a metal tube, such as an aluminum foil tube or a tin foil tube, etc., or a nonwoven fabric tube, a ceramic tube, or an organic polymer plastic tube that can withstand a temperature of at least 150°C, etc. For example, in one specific embodiment, the tubular base 1131 is made of cigarette paper or barrier cigarette paper.
[0056] In some embodiments, the carrier 1132 and the aerosol generating substrate 1133 are spirally wound into a columnar shape. In some embodiments, the carrier 1132 is spirally wound from a sheet.
[0057] In some embodiments, the sheet used to form the carrier 1132 can include cellulose paper, aluminum foil, or nonwoven fabric, etc. In some embodiments, the sheet used to form the carrier 1132 has a thickness of 0.01 to 0.50 mm; in some embodiments, the sheet used to form the carrier 1132 has an areal density of 15 to 150 g / m 2 .
[0058] In some embodiments, the surface of the sheet material used to wind to form the carrier 1132 is roughened, which is advantageous for facilitating the loading or binding of the aerosol generating substrate 1133 to the surface of the carrier 1132. In some specific embodiments, the surface of the sheet material used to wind to form the carrier 1132 is roughened by forming indentations or grooves on the surface of the sheet material by a hydroentangling process or an embossing process, etc. Alternatively, the surface of the sheet material used to wind to form the carrier 1132 is roughened by forming protrusions or burrs on the surface of the sheet material. In embodiments, the surface of the carrier 1132 is roughened; the surface of the carrier 1132 can have indentations, grooves, protrusions, burrs, etc.
[0059] In some embodiments, the aerosol generating substrate 1133 is a porous structure having microporous pores inside. In some embodiments, the porosity of the aerosol generating substrate 1133 is between 40% and 75%. In some embodiments, the microporous pores inside the aerosol generating substrate 1133 are randomly or disorderly present.
[0060] In some embodiments, the aerosol generating substrate 1133 comprises:
[0061] Plant tissue, fiber, aerosol former, adhesive, flavorant, and water.
[0062] In some embodiments, the plant tissue comprises or is derived from one or more plant products or components thereof; for example, in some specific embodiments, the plant tissue comprises leaves, bark, fibrous tissue, stems, roots, petals, fruits, etc. of a plant. In the aerosol generating substrate 1133, the plant tissue is functional in one aspect as an active ingredient, and in another aspect as a carrier to provide loading for other ingredients such as the aerosol former and the flavorant.
[0063] For example, in some embodiments, the plant tissue includes or is at least tobacco or tobacco-containing material that provides an active ingredient, such as nicotine; in such embodiments, the plant tissue including the tobacco or tobacco-containing material is used to provide the active ingredient, such as nicotine, for delivery in an aerosol to a user. In some embodiments, the tobacco or tobacco-containing material can include any of tobacco leaf, tobacco rib fragments, cured tobacco leaf, sun-cured tobacco leaf, burley tobacco leaf, Oriental tobacco leaf, tobacco stem, reconstituted tobacco leaf, homogenized tobacco, extruded tobacco, tobacco slurry, cast leaf tobacco, and expanded tobacco. Or in yet other embodiments, the plant tissue includes other plant tissue that provides an active ingredient other than nicotine. For example, in some embodiments, these other plant tissue that replaces tobacco can be derived from one or more of common Chinese herbal or floral crops; Chinese herbal crops such as one or more of dandelion, apocynum, jujube, medlar, fritillaria, panax, fat plant, borneol, menthol, saffron, poria, radix puerariae, radix notoginseng, schisandra, chrysanthemum, plantain, radix bupleuri, radix isatidis, radix astragali, radix prunellae, ginseng, radix paeoniae alba, radix gastrodiae, schisandra, chrysanthemum, plantain; floral crops such as one or more of tea leaf, lotus leaf, mint, licorice, clove, gynostemma, ginkgo leaf, mulberry leaf, perilla, jasmine, buckwheat tea, dandelion tea, honeysuckle, bitter buckwheat tea, coffee, areca nut.
[0064] In some embodiments, the plant tissue is added primarily in the form of a powder of the plant tissue for the aerosol generating substrate 1133 to be prepared, for example, by slurry injection followed by curing. In some preferred embodiments, the particle size of the powder of the plant tissue is between 40 and 800 mesh.
[0065] In some embodiments, the fibers in the aerosol generating substrate 1133 can provide a loading capacity to load functional ingredients such as flavorants or adhesives. In some preferred embodiments, the fibers include one or more of plant fibers such as coniferous wood pulp fibers, broadleaf wood pulp fibers, hemp fibers, tobacco fibers, or non-plant fibers such as metal fibers, synthetic fibers.
[0066] In some embodiments, the aerosol forming agent is used to generate an aerosol, i.e., an air mist, when heated. In embodiments, the aerosol forming agent includes one or more of propylene glycol, glycerol, triacetin, triethyl citrate, isopropyl myristate, methyl stearate, glycerol monocaprylate, polyhydric alcohol, ammonium salt.
[0067] In some embodiments, the flavoring agent is used to increase or provide a flavor of the aerosol. In some embodiments, the flavoring agent generally includes at least one of menthol, apple flavor, rose flower flavor, peach flavor, orange flavor, citrus peel flavor, cocoa flavor, or other flavoring substances, or a liquid organic alcohol or organic oil or organic fat having a flavor such as menthol oil, menthol, rose flower oil, cassia leaf extract, cocoa oil, cinnamic acid guaiacyl ester, star anise oil, beta octalactone, bergamot oil, linaloe oil, ethyl maltol, methyl chavicol (MCP), 2-acetyl pyrazine, 2.3.3-trimethyl pyrazine, or cinnamomum cassia leaf oil. In use, when the aerosol generating substrate 1133 is heated, the flavoring agent forms volatile flavoring components and is entrained in the aerosol to be output downstream.
[0068] In some embodiments, the adhesive facilitates bonding of the components in the aerosol generating substrate 1133. In some embodiments, the adhesive is selected from one or a combination of methyl cellulose, hydroxypropyl methyl cellulose, carboxymethyl cellulose, guar gum, ethyl cellulose, corn starch, carrageenan, konjac gum, gellan gum, xanthan gum, gum arabic, locust bean gum, and sodium alginate.
[0069] In some embodiments, the aerosol generating substrate 1133 includes 10 to 80 parts by weight of the plant tissue powder, 1 to 10 parts by weight of the fiber, 1 to 10 parts by weight of the adhesive, 10 to 50 parts by weight of the aerosol forming agent, and 10 to 30 parts by weight of the flavoring agent. In some embodiments, the aerosol generating substrate 1133 has a water content of less than 12 wt%. For example, in some alternative embodiments, the aerosol generating substrate 1133 has a water content of about 5 to 12 wt%.
[0070] In some embodiments, the aerosol generating substrate 1133 is formed by solidifying a slurry precursor including the above materials as raw materials. More specifically, the aerosol generating substrate 1133 is formed by solidifying a slurry precursor including the above materials as raw materials after being combined with a sheet used to form the carrier 1132 and being spiral-wound together with the sheet. The carrier 1132 is formed from the sheet and the aerosol generating substrate 1133 is formed from the slurry precursor after the slurry precursor combined with the sheet is spiral-wound together.
[0071] In some embodiments, the slurry precursor for forming the aerosol generating substrate 1133 includes 10 to 80 parts by weight of the plant tissue powder, 1 to 10 parts by weight of the fiber, 1 to 10 parts by weight of the adhesive, 10 to 50 parts by weight of the smoking agent, 10 to 30 parts by weight of the flavoring agent, and 50 to 500 parts by weight of water.
[0072] 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.
[0073] according to Figure 5 As shown, 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. According to Figure 5 In the illustrated embodiment, the heating device includes:
[0074] The chamber has an opening 40; in use, the aerosol-generating article 1000 can be removably received in the chamber through the opening 40.
[0075] 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.
[0076] Cell 10 is used for power supply;
[0077] Circuit 20 is used to guide current between cell 10 and heater 30.
[0078] exist Figure 5 In the illustrated embodiment, 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.
[0079] 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.
[0080] In some embodiments, the heater 30 can also be configured to be at least partially arranged around or to define the chamber; for example, the heater 30 can be configured in a tubular shape to at least partially surround 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 circumference of the aerosol generating article 1000. Also, when the aerosol generating article 1000 is at least partially received and held in the heater 30 when received in the heating device, the heater 30 heats the aerosol generating element 1130 of the aerosol generating article 1000 from the outside, thereby causing the aerosol generating article 1000 to release volatile compounds by only a heating process, and the volatile compounds are formed. In some embodiments, the tubular heater 30 can have an inner diameter of about 5.8 mm to 10 mm.
[0081] In some embodiments, the heater 30 includes or is at least one of a resistance heater, an induction heater, an infrared heater, a microwave heater, or a light heater such as a laser heater.
[0082] In some embodiments, the process of preparing the aerosol generating element 1130 including the carrier 1132 and the aerosol generating substrate 1133 can include:
[0083] S10, obtaining raw materials required to prepare the carrier 1132 and the aerosol generating substrate 1133:
[0084] Obtaining a sheet material for winding the carrier 1132, and obtaining raw materials for forming the aerosol generating substrate 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 smoking agent, 10 to 30 parts by weight of flavoring, and 50 to 500 parts by weight of water, and mixing them to make a slurry.
[0085] S20, combining the slurry to the surface of the sheet material by at least one or more coating processes such as doctor blade coating or casting, etc. Figure 3 The sheet material 1132a having the slurry precursor 1133a of a predetermined thickness on the surface as shown in FIG. 2A, and drying the slurry precursor 1133a combined to the surface of the sheet material 1132a to control the moisture ratio of the slurry precursor 1133a to 5 to 12 wt%, and cutting the sheet material having the slurry precursor of a predetermined thickness combined to the surface, for example, cutting with a cutter to a width suitable for winding in a cigarette making apparatus such as a cigarette maker.
[0086] 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%.
[0087] according to Figure 3 As shown, 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.
[0088] 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".
[0089] S30, according to Figure 4 As indicated by the middle arrow P11, the sheet 1132a, which incorporates the slurry precursor 1133a, is spirally wound into a cylindrical shape, with the sheet 1132a wrapping the slurry precursor 1133a on the outside during the winding process. A substrate 1131 is then wrapped around or formed on the wound sheet 1132a and the slurry precursor 1133a to prevent them from unraveling. After the slurry precursor 1133a has cured, a basic cylindrical aerosol generating element 1130 is obtained.
[0090] 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.
[0091] according to Figures 2 to 4 As shown, 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 out of or expose the carrier 1132 in the circumferential direction.
[0092] exist Figure 2In the illustrated embodiments, 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.
[0093] according to Figures 2 to 4 As shown, the carrier 1132 includes at least two or more wound layers spirally wound from a sheet 1132a. Figure 2 In the illustrated embodiment, the spacing between adjacent 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 the plant tissue or fibers during the curing process of the slurry precursor 1133a, and by the evaporation of moisture during the drying process.
[0094] 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.
[0095] For example Figure 6 A schematic diagram of the slurry precursor 1133b bonded to the sheet 1132b is shown in yet another embodiment; in Figure 6 As shown, the thickness of the slurry precursor 1133b is variable, not uniform; for example, in Figure 6 In this process, 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 formed by coating or casting the slurry to the sheet 1132b at a predetermined thickness, and then rolling it to form a serrated or corrugated shape.
[0096] Or in Figure 6 As shown, the slurry precursor 1133b after rolling can include multiple continuous slurry units; each slurry unit of the slurry precursor 1133b after rolling can have a trapezoidal, fan-shaped, conical, U-shaped, V-shaped or irregular polygonal cross-sectional shape.
[0097] Figure 7 It shows the result of Figure 6 A schematic diagram of the aerosol generating element 1130c, including the spiral winding of sheet 1132b and slurry precursor 1133b; according to Figure 7As shown, the wound aerosol generating element 1130c has at least one or more air passages 1134c formed or defined in the carrier 1132c and the aerosol generating substrate 1133c; the at least one or more air passages 1134c define a passage path axially through the aerosol generating substrate 1133c for outputting the aerosol; and, the air passages 1134c are advantageous for reducing the resistance to draw in the puffing.
[0098] According to Figure 6 and Figure 7 As shown, the plurality of air passages 1134c are substantially discrete; the plurality of air passages 1134c formed after winding are substantially isolated from each other. In Figure 6 and Figure 7 As shown, the plurality of air passages 1134c have a non-circular cross-section. And, the partial inner side surface or partial boundary of the air passage 1134c is arc-shaped; specifically, for example, as shown in Figure 7 As shown, the boundary of the air passage 1134c defined by the wound layer of the carrier 1132c is arc-shaped.
[0099] In the wound aerosol generating element 1130c, the air passage 1134c is offset from the central axis of the aerosol generating element 1130c and / or the carrier 1132c.
[0100] It should be noted that the preferred embodiments of the present application are given in the description of the application and its drawings, but the present application is not limited to the embodiments described in the specification, and further, those skilled in the art can make improvements or modifications according to the above description, and all these improvements and modifications shall belong to the protection scope of the appended claims of the present application.
Claims
1. An aerosol-generating article, characterized in that, Comprising: An aerosol generating element configured as a column disposed along an axial direction of the aerosol generating article; The aerosol generating element comprises: A substantially helically wound carrier having a plurality of wound layers; An aerosol generating substrate configured to generate an aerosol when heated; the aerosol generating substrate is loaded or incorporated into the carrier and filled between adjacent wound layers.
2. An aerosol-generating article according to claim 1, wherein, The carrier and the aerosol generating substrate are formed by helically winding a sheet incorporating a slurry precursor; wherein the carrier is formed by helically winding the sheet, and the aerosol generating substrate is formed by the slurry precursor.
3. An aerosol-generating article according to claim 1 or 2, wherein, The aerosol generating element further comprises: A tubular base wrapping and confining the carrier and the aerosol generating substrate from the outside to prevent the wound carrier and the aerosol generating substrate from unwinding.
4. An aerosol-generating article according to claim 1 or 2, wherein The aerosol generating substrate is a porous structure having microporous pores inside, and an air passage is at least partially defined by the microporous pores inside and axially through the aerosol generating substrate.
5. An aerosol-generating article according to claim 1 or 2, wherein The space between adjacent wound layers of the carrier is substantially completely filled or occupied by the aerosol generating substrate; And / or, the aerosol generating substrate is not circumferentially protruding or exposed to the outside of the carrier.
6. An aerosol-generating article according to claim 1 or 2, wherein The aerosol generating element further comprises: At least one or more air passages axially through the aerosol generating substrate.
7. An aerosol-generating article according to claim 6, wherein, The at least one or more air passages are formed between the aerosol generating substrate and the carrier.
8. An aerosol-generating article according to claim 6, wherein, The air passage has a non-circular cross-section; And / or, part of the inner surface or part of the boundary of the air passage is circular arc-shaped.
9. An aerosol-generating article according to claim 6, wherein, The air passage is offset from the central axis of the carrier.
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 substrate of the aerosol generating article.