Aerosol generating matrix section and aerosol generating product

Abstract

The embodiment of the invention provides an aerosol generating substrate section and an aerosol generating product, the aerosol generating substrate section comprises a plurality of mixed density substrate strips which are arranged in parallel to form a bundle, and each mixed density substrate strip extends between two opposite ends of the aerosol generating substrate section. The mixed density matrix strip has a first density region and a second density region arranged along a cross-section of the aerosol-generating matrix segment, the density of the first density region being less than the density of the second density region. The aerosol generating matrix section provided by the embodiment of the invention can improve the smoking experience.

Description

Technical Field

[0001] The present application relates to the technical field of smoking products, and in particular to an aerosol generating substrate segment and an aerosol generating product. Background Art

[0002] Aerosol-generating products generally generate aerosols by heating without burning. Specifically, the aerosol-generating product has an aerosol-generating matrix segment. The aerosol-generating product is loaded into an aerosol-generating device and heated by a heating component in the aerosol-generating device so that the aerosol-generating matrix segment is heated just enough to emit a fragrance, but the aerosol-generating matrix segment does not burn.

[0003] In the related art, the shapes of aerosol-generating matrix segments mainly include thin sheets, filaments, loose particles, and integrated porous columns. Due to their own structural reasons, these aerosol-generating matrix segments are difficult to ensure that the amount of aerosol released remains consistent in the front, middle and back sections of the puff during the heating process. The consistency of the puff is difficult to achieve an ideal state, and the puffing experience is poor. Summary of the Invention

[0004] In view of this, the embodiments of the present application hope to provide an aerosol-generating matrix segment and an aerosol-generating product that can improve the smoking experience.

[0005] To achieve the above objectives, an embodiment of the present application provides an aerosol generating substrate segment, comprising:

[0006] A plurality of mixed density matrix strips are arranged in parallel into bundles, each of the mixed density matrix strips extending between opposite ends of the aerosol generating matrix segment, and the mixed density matrix strips have a first density region and a second density region arranged along the cross-section of the aerosol generating matrix segment, and the density of the first density region is less than the density of the second density region.

[0007] In one embodiment, the plurality of parallel arranged mixed density matrix strips extend along a first direction, and the angle between the first direction and the central axis direction of the aerosol generating matrix segment is no more than 10 degrees.

[0008] In one embodiment, the first density region and the second density region each have a fragrance substance; the boiling point of the fragrance substance in the first density region is the same as the boiling point of the fragrance substance in the second density region.

[0009] In one embodiment, the first density region and the second density region each have a fragrance substance; the boiling point of the fragrance substance in the first density region is greater than the boiling point of the fragrance substance in the second density region.

[0010] In one embodiment, the first density region of each of the mixed density substrate strips is oriented towards the centre of the aerosol-generating substrate segment in a cross-section of the aerosol-generating substrate segment.

[0011] In one embodiment, the second density region of each of the mixed density substrate strips is oriented towards the centre of the aerosol-generating substrate segment in a cross-section of the aerosol-generating substrate segment.

[0012] In one embodiment, the density of the first density region is 400 mg to 1300 mg / cm 3 .

[0013] In one embodiment, the density of the second density region is 900 mg to 2000 mg / cm 3 .

[0014] In one embodiment, the cross-sectional size of the matrix strip is 0.4 mm to 7 mm.

[0015] In one embodiment, the volume ratio of the first density region to the second density region in the same mixed density matrix strip is 1:10 to 5:1.

[0016] In one embodiment, the aerosol-generating substrate segment further comprises a packaging layer, wherein the packaging layer is rolled to form a receiving space, and all the mixed-density substrate strips are received in the receiving space.

[0017] In one embodiment, the filling rate of the aerosol generating substrate segment is 40% to 90%.

[0018] In one embodiment, the cross-section of the mixed density matrix strip is in the shape of a polygon, an ellipse, a petal, a circle, a waist circle, a gear, or a special shape.

[0019] In one embodiment, the mixed density matrix strip is a uniform cross-sectional structure.

[0020] In one embodiment, the aerosol-generating substrate segment further comprises an isopycnic substrate strip extending between opposite ends of the aerosol-generating substrate segment.

[0021] In one embodiment, there are multiple isodensity matrix strips, and the density of each isodensity matrix strip is greater than the density of the first density region, and all the isodensity matrix strips surround the circumference of all the mixed density matrix strips.

[0022] In one embodiment, there are multiple isodensity matrix strips, and all the mixed density matrix strips surround the circumference of all the isodensity matrix strips.

[0023] In one embodiment, the ratio of the mixed density matrix strips to the equal density matrix strips is 1:3 to 3:1.

[0024] Another embodiment of the present application provides an aerosol-generating article, comprising:

[0025] The aerosol generating substrate segment of any of the above items, wherein each of the mixed density substrate strips extends in a first direction;

[0026] a functional segment, the functional segment being arranged at one end of the aerosol generating matrix segment along the first direction, the functional segment comprising a cooling segment and a filtering segment, the cooling segment being located between the filtering segment and the aerosol generating matrix segment;

[0027] An outer wrapping layer wraps around the outer circumference of the functional segment and the aerosol generating substrate segment.

[0028] In one embodiment, the length dimension of the aerosol-generating substrate segment along the first direction is 20% to 80% of the length dimension of the aerosol-generating article along the first direction.

[0029] In one embodiment, the length of the cooling section along the first direction is 25% to 65% of the length of the aerosol generating article along the first direction.

[0030] In one embodiment, the cooling section has an air flow channel, and the aerosol generating article further includes a breathable membrane, which is arranged on the cooling section, and at least one end of the air flow channel close to the aerosol generating substrate section is covered with the breathable membrane.

[0031] In one embodiment, the cooling section has an air flow channel, and the aerosol generating article further includes a breathable membrane, which is arranged on the aerosol generating substrate section, and at least one end of the aerosol generating substrate section close to the air flow channel is covered with the breathable membrane.

[0032] In one embodiment, the air permeability of the breathable membrane is greater than or equal to 500 CU.

[0033] In one embodiment, the filter section has a suction channel.

[0034] In one embodiment, the functional section further includes a flavoring section, and the flavoring section is disposed between the cooling section and the filtering section.

[0035] In one embodiment, the fragrance-enhancing segment comprises fiber cotton that has been subjected to fragrance-enhancing treatment.

[0036] In one embodiment, the fragrance-enhancing section includes fiber cotton and explosive beads disposed in the fiber cotton.

[0037] Another embodiment of the present application further provides an aerosol-generating article, comprising:

[0038] The aerosol generating matrix segment described above;

[0039] A breathable membrane is provided at at least one end of the aerosol-generating substrate segment.

[0040] An embodiment of the present application provides an aerosol-generating matrix segment and an aerosol-generating product. The aerosol-generating matrix segment is provided with a plurality of mixed-density matrix strips arranged in parallel and having a first density region and a second density region. The first density region and the second density region are arranged along the cross-section of the mixed-density matrix strip, and the density of the first density region is less than the density of the second density region. That is to say, the mixed-density matrix strip has both regions with relatively low density and regions with relatively high density. Therefore, the aerosol-generating matrix segment having a plurality of mixed-density matrix strips also has regions with relatively low density and regions with relatively high density. In the initial stage of heating, the infrared transmission efficiency of the first density area with relatively low density is higher than that of the second density area with relatively high density, and the heat capacity of the first density area with relatively low density is smaller. Compared with the second density area, the first density area can produce more sufficient aerosol in the front section of puffing. This advantage is more obvious for the heating components of infrared heating. In the middle and late sections of puffing, although the aerosol generated by the first density area will decay, the second density area can produce more sufficient aerosol. Therefore, through the cooperation of the first density area and the second density area, the amount of aerosol released can be kept roughly consistent in the front, middle and late sections of puffing, thereby improving the consistency of puffing and further improving the puffing experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 This is a simplified structural diagram of the first aerosol generating substrate segment according to an embodiment of the present application;

[0042] Figure 2 for Figure 1 A cross-sectional view of an aerosol-generating substrate segment is shown;

[0043] Figure 3 for Figure 2 A cross-sectional view of a mixed density matrix strip shown in ;

[0044] Figure 4 This is a schematic cross-sectional view of a second aerosol-generating substrate segment according to an embodiment of the present application;

[0045] Figure 5 This is a schematic cross-sectional view of a third aerosol-generating substrate segment according to an embodiment of the present application;

[0046] Figure 6This is a schematic cross-sectional view of a fourth aerosol-generating substrate segment according to an embodiment of the present application;

[0047] Figure 7 This is a schematic cross-sectional view of a fifth aerosol-generating substrate segment according to an embodiment of the present application;

[0048] Figure 8 This is a schematic cross-sectional view of a sixth aerosol-generating substrate segment according to an embodiment of the present application;

[0049] Figure 9 This is a schematic cross-sectional view of a seventh aerosol-generating substrate segment according to an embodiment of the present application;

[0050] Figure 10 This is a schematic structural diagram of a first aerosol generating product according to an embodiment of the present application;

[0051] Figure 11 This is a schematic structural diagram of a second aerosol generating article according to an embodiment of the present application;

[0052] Figure 12 This is a schematic structural diagram of the third aerosol generating product according to an embodiment of the present application.

[0053] Description of Reference Numerals

[0054] 10. Aerosol generating matrix section; 11. Mixed density matrix strip; 111. First density region; 112. Second density region; 12. Isodensity matrix strip; 13. Packaging layer; 20. Functional section; 21. Cooling section; 21a. Air flow channel; 22. Filtration section; 22a. Suction channel; 23. Fragrance enhancing section; 231. Fiber cotton; 232. Bursting beads; 30. Breathable membrane. DETAILED DESCRIPTION

[0055] In the description of the embodiments of the present application, it should be noted that the orientation or position relationship indicated by the term "first direction" is based on the attached Figure 2 The orientation or positional relationship shown, these orientation terms are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0056] The present application embodiment provides an aerosol generating matrix segment 10, see Figures 1 to 3 The aerosol-generating substrate segment 10 comprises a plurality of mixed-density substrate strips 11 arranged in parallel to form a bundle, with each mixed-density substrate strip 11 extending between opposite ends of the aerosol-generating substrate segment 10.

[0057] The plurality of mixed-density matrix strips 11 arranged in parallel extend along a first direction, that is, the extension direction of the mixed-density matrix strips 11 is the first direction. The angle between the first direction and the central axis direction of the aerosol-generating matrix segment 10 is no greater than 10 degrees. In other words, due to factors such as the manufacturing precision of the mixed-density matrix strips 11 and the bundling process of each mixed-density matrix strip 11, the extension direction of some mixed-density matrix strips 11 may slightly deviate from the central axis direction of the aerosol-generating matrix segment 10, or portions of the mixed-density matrix strips 11 may be bent. However, as long as the mixed-density matrix strips 11 extend roughly from one end to the other end of the aerosol-generating matrix segment 10, the mixed-density matrix strips 11 may be considered to extend along the first direction within the aerosol-generating matrix segment 10.

[0058] Illustratively, the first direction may be parallel to the central axis direction of the aerosol-generating substrate segment 10 , that is, the angle between the first direction and the central axis direction of the aerosol-generating substrate segment 10 is 0 degrees.

[0059] One end of each mixed density matrix strip 11 along the first direction can be located at or near one of the opposite ends of the aerosol generating matrix segment 10, and the other end of each mixed density matrix strip 11 along the first direction can be located at or near the other end of the opposite ends of the aerosol generating matrix segment 10.

[0060] Parallel arrangement means that the projections of the mixed density matrix strips 11 at least partially overlap on a plane parallel to the first direction. In other words, the mixed density matrix strips 11 are not connected end to end along the first direction, but are roughly parallel.

[0061] Please continue reading Figure 2 , defining a plane perpendicular to the central axis of the aerosol-generating substrate segment 10 as a cross-section, the mixed-density matrix strip 11 has a first density region 111 and a second density region 112 arranged along a second direction, wherein the density of the first density region 111 is less than the density of the second density region 112, wherein the second direction is perpendicular to the extension direction of the mixed-density matrix strip 11. In other words, the mixed-density matrix strip 11 has the first density region 111 and the second density region 112 arranged along the cross-section.

[0062] The densities of the first density region 111 and the second density region 112 can be designed as needed. For example, the density of the first density region 111 can be 400 mg to 1300 mg / cm 3 (including endpoint values), such as 400 mg / cm 3 , 500mg / cm 3 , 700mg / cm 3 , 900mg / cm 3 、1200mg / cm 3、1300mg / cm 3 wait.

[0063] For example, the density of the second density region 112 may be 900 mg to 2000 mg / cm 3 (including endpoint values), such as 900 mg / cm 3 、1200mg / cm 3 、1500mg / cm 3 、1800mg / cm 3 , 2000mg / cm 3 wait.

[0064] The volume ratio of the first density region 111 and the second density region 112 in the same mixed density matrix strip 11 can be designed as needed. For example, the volume ratio of the first density region 111 and the second density region 112 in the same mixed density matrix strip 11 can be 1:10 to 5:1 (including endpoint values), such as 1:10, 1:5, 2:3, 1:1, 2:1, 3:1, 5:1, etc.

[0065] For example, please refer to Figure 1 The aerosol generating matrix segment 10 may be provided with a packaging layer 13 , which is wound to form a receiving space, and all the mixed density matrix strips 11 are received in the receiving space.

[0066] The packaging layer 13 can be a hollow tube, with all the mixed-density matrix strips 11 contained within the space within the packaging layer 13. The packaging layer 13 can also be a plugging paper, with all the mixed-density matrix strips 11 being combined into a single structure via the plugging paper. The packaging layer 13 can shape and protect the mixed-density matrix strips 11.

[0067] The filling rate of the aerosol generating matrix segment 10 can be designed as needed. For example, the filling rate of the aerosol generating matrix segment 10 can be 40% to 90% (including endpoint values), such as 40%, 50%, 60%, 70%, 80%, 90%, etc.

[0068] It should be noted that if there are only mixed density matrix strips 11 in the aerosol generating matrix segment 10, the filling rate in the aerosol generating matrix segment 10 refers to the filling rate of all mixed density matrix strips 11 in the aerosol generating matrix segment 10; if there are other matrix strips in addition to the mixed density matrix strips 11 in the aerosol generating matrix segment 10, the filling rate in the aerosol generating matrix segment 10 refers to the filling rate of all matrix strips in the aerosol generating matrix segment 10, that is, the ratio of the sum of the volumes of all matrix strips to the volume of the accommodation space.

[0069] The specific structure of the mixed density matrix strip 11 is not limited herein. For example, in one embodiment, the mixed density matrix strip 11 can be made of an atomized medium itself, such as a smoke-flavored flavoring medium. In other embodiments, the mixed density matrix strip 11 can also include a substrate and an atomized medium disposed on the substrate. The substrate can be, for example, one or more of high-temperature-resistant carbon fiber, softwood pulp fiber, hardwood pulp fiber, bamboo fiber, cotton fiber, or hemp fiber. By providing the substrate, the mixed density matrix strip 11 can be strengthened and can withstand a certain degree of high temperature without generating odor.

[0070] The specific components of the mixed density matrix strip 11 are not limited here. For example, in one embodiment, the mixed density matrix strip 11 may include plant components, auxiliary components, smoke-generating agent components, adhesive components, etc.

[0071] In one embodiment, the plant component is one or more combinations of powders formed from crushed tobacco leaves, tobacco leaf fragments, tobacco stems, tobacco dust, and flavorful plants. The plant component is the core source of the flavor of the product. Endogenous substances in the plant component, such as nicotine, enter the human bloodstream through aerosolization, promoting dopamine production in the pituitary gland, thereby achieving a sense of physiological satisfaction.

[0072] In one embodiment, the plant components may include one or more of tobacco, tea leaves, tea stems, dandelion, eucalyptus, cloves, cinnamon, turmeric, fungi, insulin wood, astragalus, jujube seeds, lentils, kudzu root, fennel, rosemary, star anise, honeysuckle, chrysanthemum, rose, marigold, mugwort, olive, ginseng, American ginseng, mung beans, red beans, tangerine peel, nut shells, lily, coffee, agarwood, mint, hawthorn, licorice, cocoa, fungus, lotus seeds, lotus leaves, zingiber officinale, ginger, buckwheat, and wheat bran. The mass proportion of the plant components in the aerosol matrix can be 20%-80% (including the endpoint values).

[0073] In one embodiment, the auxiliary agent may be one or more combinations of inorganic fillers, lubricants, and emulsifiers. Inorganic fillers include one or more combinations of heavy calcium carbonate, light calcium carbonate, zeolite, attapulgite, talc, and diatomaceous earth. Inorganic fillers can provide skeletal support for the plant component and, while also possessing micropores, can increase the porosity of the wall material after the plant component is formed, thereby improving the aerosol release rate.

[0074] Lubricants include one or more of candelilla wax, carnauba wax, shellac, sunflower wax, rice bran, beeswax, stearic acid, and palmitic acid. Lubricants can increase particle flowability, reduce friction between particles, and achieve a more uniform particle density. They can also reduce mold pressure and reduce mold wear.

[0075] Emulsifiers include one or more combinations of polyglycerol fatty acid esters, Tween-80, and polyvinyl alcohol. Emulsifiers can, to a certain extent, slow the loss of flavoring substances during storage, increase their stability, and improve the sensory quality of the product. Emulsifiers (also known as surfactants) can reduce the interfacial tension between the water-soluble and water-insoluble components in a mixed system and form a relatively strong film on the surface of the droplets. Alternatively, due to the charge imparted by the emulsifier, a double layer is formed on the surface of the droplets, preventing the droplets from aggregating and maintaining a uniform emulsion. Emulsifying and homogenizing two immiscible components can improve the consistency of product quality.

[0076] The function of the smoke-generating agent component is to generate a large amount of vapor when heated, thereby increasing the amount of smoke produced by the smoking article. In one embodiment, the smoke-generating agent may include, for example, a monohydric alcohol (such as menthol); a polyhydric alcohol (such as propylene glycol, triethylene glycol, 1,3-butylene glycol, and glycerol); an ester of a polyhydric alcohol (such as glyceryl monoacetate, glyceryl diacetate, or glyceryl triacetate); a monocarboxylic acid; a polycarboxylic acid (such as lauric acid, myristic acid), or an aliphatic ester of a polycarboxylic acid (such as dimethyl dodecanedioate, dimethyl tetradecanedioate, erythritol, 1,3-butylene glycol, tetraethylene glycol, triethyl citrate, propylene carbonate, ethyl laurate, triactin, meso-erythritol, a mixture of diacetyl glycerides, diethyl suberate, triethyl citrate, benzyl benzoate, benzyl phenylacetate, ethyl vanillate, tributyrin, and lauryl acetate).

[0077] In one embodiment, the adhesive component is a natural plant-extracted, non-ionically modified viscous polysaccharide, including one or more combinations of tamarind polysaccharide, pullulan, seaweed polysaccharide, locust bean gum, guar gum, and xyloglucan. The adhesive wetting and intimately contacting the product component materials creates intermolecular attraction, thereby bonding the powders and liquids of the component materials. The use of a natural plant-extracted, non-ionic adhesive can prevent the release of harmful substances such as methanol, formaldehyde, and acrolein caused by colloid modification, thereby improving the safety of the product.

[0078] The mixed density matrix strip 11 can be a particle combination, which is a reconstituted tobacco medium, for example, a reconstituted tobacco medium containing ingredients such as a smoke-generating agent and tobacco. The mixed density matrix strip 11 is an integrated structure, for example, an integrated structure that can be formed by injection molding, compression molding or extrusion technology. Wherein extrusion molding refers to a processing method in which a raw material mixture is added to an extruder, and the material is pushed forward by the screw or piston through the extruder barrel and the screw or the piston, and continuously passes through the die head to form various cross-section products or semi-finished products.

[0079] For example, two matrix materials with different densities can be injected into two independent extrusion channels of the extruder respectively, and the matrix materials in the two extrusion channels are extruded from the same extrusion port of the extruder at the same time, and then dried and shaped to obtain mixed matrix strips. After shaping, the mixed density matrix strips 11 are first oriented and arranged, and then formed into an aerosol-generating matrix segment 10 by a winding rod.

[0080] Since the mixed density matrix strips 11 are a combination of particles, the aerosol generating matrix segment 10 formed by multiple mixed density matrix strips 11 is an integrated medium after being heated and sucked or after the heating stops, and is not prone to disintegration and falling off. This solves the problems of the aerosol generating matrix segment 10 in the prior art with thin flakes, filaments or loose particles, such as loose flakes, falling off of filamentous components and particle components, and difficulty in cleaning.

[0081] The mixed density matrix strip 11 may be in a straight line shape extending along a straight line, or in a curved line shape with a curvature of not zero in at least a portion of the region along the extending direction.

[0082] The shape of the cross section of the mixed density matrix strip 11 (i.e., the cross section perpendicular to the extension direction of the mixed density matrix strip 11) is not limited. For example, the shape of the cross section of the mixed density matrix strip 11 can be a polygon (including but not limited to a triangle, a prism, and a polygon). Figure 7 square shown, etc.), Figure 4 The circle shown, Figure 8 The oval shown, Figure 9 Shown petal shape etc., petal shape refers to the closed figure that is formed by circle and the multiple arc combinations that surround the circular circumference side.In addition, the shape of the cross section of mixed density matrix bar 11 can also be oval, gear-shaped and special-shaped etc., oval is meant that cross the center of circle a circle is equally divided into two semicircular arcs and mutually reverse translation, with two equal length parallel lines the endpoints of two semicircular arcs are connected and the closed figure that forms, and special-shaped refers to other symmetric or asymmetric shape outside the above enumerated shape.

[0083] The mixed density matrix strips 11 in the aerosol-generating matrix segment 10 may all have the same cross-sectional shape, or may have two or more different cross-sectional shapes.

[0084] The cross-sectional dimensions of the mixed density matrix strip 11 can be designed as needed, wherein the cross-sectional dimensions refer to the dimensions used to define the outer contour of the cross section of the mixed density matrix strip 11. For example, if the cross section of the mixed density matrix strip 11 is circular, the cross-sectional dimensions are the diameter of the cross section of the mixed density matrix strip 11. If the cross-sectional shape is other shapes, the cross-sectional dimensions can be considered to be the equivalent diameter or the side length of the polygon. For example, if the cross section of the mixed density matrix strip 11 is square, the cross-sectional dimensions are the maximum length of the cross section of the mixed density matrix strip 11. If the cross section of the mixed density matrix strip 11 is other shapes other than circular and square, the cross-sectional dimensions are the maximum dimensions of the cross section of the mixed density matrix strip 11, that is, the distance between the two farthest points on the outer contour of the cross section.

[0085] Exemplarily, the cross-sectional size of the mixed density matrix strip 11 can be 0.4 mm to 7 mm (including endpoint values). Taking the cross-sectional shape as a circle as an example, the diameter is 0.4 mm to 7 mm (including endpoint values), such as 0.4 mm, 0.8 mm, 1 mm, 1.2 mm, 1.5 mm, 2 mm, 3 mm, 3.5 mm, 4 mm, 5 mm, 7 mm, etc.

[0086] More preferably, the cross-sectional size of the mixed density matrix strip 11 can be 0.5mm~3.5mm (including endpoint values), for example, the diameter is 0.5mm~3.5mm (including endpoint values), and more preferably, the cross-sectional size of the mixed density matrix strip 11 can be 0.8~1.5mm (including endpoint values), for example, the diameter is 0.8mm~1.5mm (including endpoint values).

[0087] Figure 1 and Figure 2 The mixed density matrix strip 11 shown is of a uniform cross-section structure, that is, the cross-section shape and size of the mixed density matrix strip 11 at any position are the same. The uniform cross-section structure can facilitate the processing and manufacturing of the mixed density matrix strip 11.

[0088] In other embodiments, the mixed density matrix strip 11 may also be a variable cross-section structure, which means that the shape or size of the cross section at at least one position of the mixed density matrix strip 11 is different from the shape or size of the cross section at other positions.

[0089] The shape of the aerosol-generating substrate segment 10 is also not limited. For example, the aerosol-generating substrate segment 10 can be cylindrical. The cross-section of the cylindrical aerosol-generating substrate segment 10 can also be polygonal (including but not limited to triangle, prism, and square), elliptical, circular, oval, or irregularly shaped.

[0090] The present application also provides an aerosol generating product. Figures 10 to 12 The aerosol generating article includes a functional segment 20, an outer wrapping layer (not shown) and the aerosol generating substrate segment 10 provided in any embodiment of the present application.

[0091] The functional segment 20 is disposed at one end of the aerosol-generating substrate segment 10 along the first direction. The functional segment 20 includes a cooling segment 21 and a filtration segment 22. The cooling segment 21 is located between the filtration segment 22 and the aerosol-generating substrate segment 10. The outer wrapping layer wraps around the outer periphery of the functional segment 20 and the aerosol-generating substrate segment 10.

[0092] The aerosol-generating article is used in conjunction with an aerosol-generating device having a heating component. Specifically, the heating component of the aerosol-generating device heats the aerosol-generating matrix segment 10, causing the aerosol-generating matrix segment 10 to release aerosol. The user inhales the aerosol puff by puff, that is, the user inhales one puff of the aerosol, stops inhaling, and then inhales the next puff of the aerosol, thus inhaling intermittently. The front section of the inhalation refers to the period of initial use of the aerosol-generating matrix segment 10. The first few puffs correspond to the front section of the inhalation, for example, 1-5 puffs. The back section of the inhalation refers to the period when the aerosol-generating matrix segment 10 is close to complete aerosol release. The last few puffs correspond to the back section of the inhalation, for example, the last 1-5 puffs. The front section and back section of the inhalation refer to the early and late sections of the life cycle of the aerosol-generating matrix segment 10, respectively. The middle section of the inhalation refers to the inhalation period between the front section and the back section.

[0093] The heating assembly can be heated in a variety of ways. Exemplarily, these methods include central heating and circumferential heating. Central heating involves inserting the heating assembly into the aerosol-generating substrate segment 10 to heat the aerosol-generating substrate segment 10 from the inside out. Circumferential heating involves placing the heating assembly around the periphery of the aerosol-generating article to heat the aerosol-generating substrate segment 10 from the outside in. These heating methods may include resistance heating, electromagnetic heating, infrared heating, microwave heating, laser heating, and the like, without specific limitation herein.

[0094] The cooling section 21 is arranged between the filtering section 22 and the aerosol generating matrix section 10, and is used to cool the aerosol before the filtering section 22 filters the aerosol, so as to reduce the temperature of the aerosol and improve the "burning mouth" phenomenon when the user inhales the aerosol.

[0095] The materials of the cooling section 21 include but are not limited to one or more combinations of PE (polyethylene), PLA (Polylactic acid, also known as polylactide), PBAT (butylene adipate-co-terephthalate), PP (Polypropylene), acetate fiber, and acrylic fiber materials.

[0096] The material of the filter section 22 includes but is not limited to one or more combinations of PE, PLA, PBAT, PP, acetate fiber, and acrylic fiber materials.

[0097] The materials of the cooling section 21 and the filtering section 22 may be the same or different.

[0098] It should be noted that the aerosol-generating product relies on the aerosol-generating substrate segment 10 to generate aerosol, and the functional segment 20 does not generate aerosol.

[0099] The material of the outer wrapping layer is not limited, for example, including but not limited to one or more combinations of fiber paper, metal foil, infrared radiation layer, metal foil composite fiber paper, polyethylene composite fiber paper, PE, PBAT and the like.

[0100] The outer wrapping layer can be a hollow tube, and the aerosol generating matrix segment 10 and the functional segment 20 can be arranged in sequence in the hollow tube outer wrapping layer. The outer wrapping layer can also be a tipping paper, and the aerosol generating matrix segment 10 and the functional segment 20 are compounded into an integrated structure through the tipping paper.

[0101] Illustratively, the length dimension of the aerosol-generating substrate segment 10 along the first direction may be 20% to 80% (including the endpoint values), such as 20%, 40%, 50%, 80%, etc., of the length dimension of the aerosol-generating article along the first direction.

[0102] Illustratively, the length of the cooling section 21 along the first direction may be 25% to 65% (including the endpoint values) of the length of the aerosol generating article along the first direction, such as 25%, 30%, 50%, 65%, etc.

[0103] It is understandable that during the user's inhalation process, the aerosol generated by the aerosol-generating substrate segment 10 flows toward the filter segment 22 along the first direction.

[0104] In the related art, the density of aerosol generating matrix segments in the form of thin sheets, filaments, loose particles, and integrated porous columns is relatively uniform, and it is difficult to design and control the density of these aerosol generating matrix segments differently. However, for these aerosol generating matrix segments with relatively uniform density, when the density of the aerosol generating matrix segment is relatively high, the heat capacity is relatively large, the effective material load is relatively high, and the porosity inside the aerosol generating matrix segment is low. The aerosol generating matrix segment requires more energy to generate a larger amount of smoke in the initial stage of heating, and the energy supply of the heating component in the initial stage is delayed and the energy accumulation is small, resulting in the aerosol generating matrix segment generating limited aerosol in the front section of puffing, and more sufficient aerosol generated in the middle and late sections of puffing; when the density of the aerosol generating matrix segment is relatively low, the heat capacity is small, the effective material load is relatively low, and the porosity inside the aerosol generating matrix segment is high. The aerosol generating matrix segment requires less energy to generate a larger amount of smoke in the initial stage of heating, and the smoke is discharged quickly, resulting in the aerosol generating matrix segment generating more sufficient aerosol in the front section of puffing, and the aerosol generated in the middle and late sections of puffing is significantly attenuated. That is to say, it is difficult to ensure that the aerosol release amount of the aerosol-generating matrix segment with relatively uniform density remains consistent in the front, middle and back sections of the puff during the heating process. Therefore, it is difficult to ensure the consistency of the puff during the puff process, and the puff experience is poor.

[0105] The aerosol generating matrix segment 10 of the embodiment of the present application is provided with a plurality of mixed density matrix strips 11 arranged in parallel and having a first density region 111 and a second density region 112. The first density region 111 and the second density region 112 are arranged along the cross-section of the mixed density matrix strip 11, and the density of the first density region 111 is less than the density of the second density region 112. That is to say, the mixed density matrix strip 11 has both regions with relatively low density and regions with relatively high density. Therefore, the aerosol generating matrix segment 10 having a plurality of mixed density matrix strips 11 also has regions with relatively low density and regions with relatively high density. In the initial stage of heating, the infrared transmission efficiency of the first density region 111 with relatively low density is higher than that of the second density region 112 with relatively high density, and the heat capacity of the first density region 111 with relatively low density is smaller. Compared with the second density region 112, the first density region 111 can produce more sufficient aerosol in the front section of puffing. This advantage is more obvious for the heating component of infrared heating. In the middle and late sections of puffing, although the aerosol generated by the first density region 111 will decay, the second density region 112 can produce more sufficient aerosol. Therefore, through the cooperation of the first density region 111 and the second density region 112, the amount of aerosol released can be kept roughly consistent in the front, middle and late sections of puffing, thereby improving the consistency of puffing and further improving the puffing experience.

[0106] In one embodiment, the first density region 111 and the second density region 112 each contain a fragrance substance, and the boiling point of the fragrance substance in the first density region 111 may be greater than the boiling point of the fragrance substance in the second density region 112. In other words, the fragrance substance in the second density region 112 is more volatile than the fragrance substance in the first density region 111.

[0107] Specifically, since the speed at which the first density area 111 releases aerosol is greater than the speed at which the second density area 112 releases aerosol during the heating process, the aroma substances can be distributed in the first density area 111 and the second density area 112 according to their boiling points, thereby improving the consistency of the aroma characteristics during the puffing process and further enhancing the puffing experience.

[0108] In other embodiments, the boiling point of the aroma substance located in the first density area 111 may also be the same as the boiling point of the aroma substance located in the second density area 112 .

[0109] In one embodiment, the first density region 111 of each mixed-density matrix strip 11 is oriented toward the center of the aerosol-generating matrix segment 10. In other words, the second density region 112 of each mixed-density matrix strip 11 is oriented toward the outside of the aerosol-generating matrix segment 10. Since the central heating method heats the aerosol-generating matrix segment 10 from the inside out, the first density region 111 of each mixed-density matrix strip 11 is oriented toward the center of the aerosol-generating matrix segment 10. This allows heat from the heating assembly to be transferred first to the first density region 111 of each mixed-density matrix strip 11, and then to the second density region 112 of the same mixed-density matrix strip 11. This ensures that the first density region 111 can fully release aerosol during the initial heating phase, thereby improving the consistency of aerosol release during the heating process.

[0110] In another embodiment, the second density region 112 of each mixed density matrix strip 11 may be oriented toward the center of the aerosol-generating matrix segment 10, that is, the first density region 111 of each mixed density matrix strip 11 may be oriented toward the outside of the aerosol-generating matrix segment 10. Since the circumferential heating method bakes and heats the aerosol-generating matrix segment 10 from the outside to the inside, the second density region 112 of each mixed density matrix strip 11 may be oriented toward the center of the aerosol-generating matrix segment 10. This allows the heat of the heating assembly to be first transferred to the first density region 111 of each mixed density matrix strip 11, and then to the second density region 112 of the same mixed density matrix strip 11, to ensure that the first density region 111 can fully release aerosol in the early stage of heating, thereby improving the consistency of aerosol release during the heating process.

[0111] In one embodiment, please refer to Figure 5 and Figure 6The aerosol-generating substrate segment 10 may further include an isodensity matrix strip 12. An isodensity matrix strip 12 is a matrix strip having a substantially uniform density throughout the entire matrix strip 12, without any regions having significantly different densities. The isodensity matrix strip 12 extends between opposite ends of the aerosol-generating substrate segment 10 along the first direction.

[0112] That is, the isodensity matrix strips 12 can be used in conjunction with the mixed density matrix strips 11 to meet different heating requirements.

[0113] The number of the isodensity matrix strips 12 can be one or more.

[0114] Exemplarily, there are multiple isodensity matrix strips 12, and the density of each isodensity matrix strip 12 is greater than the density of the first density region 111. It should be noted that the density of each isodensity matrix strip 12 can be the same as or different from the density of the second density region 112.

[0115] See also Figure 5 For the central heating method, all the equal-density matrix strips 12 can surround the circumference of all the mixed-density matrix strips 11.

[0116] All equal density matrix strips 12 can be wrapped around all mixed density matrix strips 11 in one or more circles, for example, Figure 5 All of the iso-density matrix strips 12 are shown as wrapping around all of the mixed-density matrix strips 11 twice.

[0117] The quantity ratio of the mixed density matrix strips 11 and the equal density matrix strips 12 can be designed as needed. For example, the quantity ratio of the mixed density matrix strips 11 and the equal density matrix strips 12 can be 1:10 to 5:1 (including endpoint values), such as 1:10, 1:5, 2:3, 2:1, 3:1, 5:1, etc.

[0118] Since the central heating method is to bake and heat the aerosol generating matrix segment 10 from the inside to the outside, all the equal-density matrix strips 12 surround the circumference of all the mixed-density matrix strips 11, so that the mixed-density matrix strips 11 can be concentrated in the area close to the heating component to ensure that in the front section of heating, the first density area 111 can fully release the aerosol, and in the middle and rear sections, the second density area 112 and the equal-density matrix strips 12 can also fully release the aerosol, thereby improving the consistency of aerosol release during the heating process.

[0119] See also Figure 6 For the circumferential heating method, all mixed density matrix strips 11 can be wrapped around the circumference of all equal density matrix strips 12.

[0120] All mixed density matrix strips 11 can be wrapped around all equal density matrix strips 12 in one or more circles, for example, Figure 6 All mixed density matrix strips 11 are shown as being wrapped around the circumference of all isodensity matrix strips 12 in a circle.

[0121] The quantity ratio of the mixed density matrix strips 11 and the equal density matrix strips 12 can be designed as needed. For example, the quantity ratio of the mixed density matrix strips 11 and the equal density matrix strips 12 can be 1:3 to 3:1 (including endpoint values), such as 1:3, 2:3, 2:1, 3:1, etc.

[0122] Since the circumferential heating method is to bake and heat the aerosol generating matrix segment 10 from the outside to the inside, all mixed density matrix strips 11 surround the circumference of all equal density matrix strips 12, so that the mixed density matrix strips 11 can be concentrated in the area close to the heating component to ensure that in the front section of heating, the first density area 111 can fully release the aerosol, and in the middle and rear sections, the second density area 112 and the equal density matrix strips 12 can also fully release the aerosol, thereby improving the consistency of aerosol release during the heating process.

[0123] In other embodiments, whether all the equal-density matrix strips 12 surround the circumference of all the mixed-density matrix strips 11, or all the mixed-density matrix strips 11 surround the circumference of all the equal-density matrix strips 12,

[0124] The density of each isodensity matrix strip 12 may also be less than the density of the first density region 111. Figures 10 to 12 The cooling section 21 may be provided with an air flow channel 21a. The aerosol-generating article may further include a breathable membrane 30. The breathable membrane 30 may be provided on the cooling section 21, and at least one end of the air flow channel 21a that is adjacent to the aerosol-generating substrate segment 10 may be covered with the breathable membrane 30. In other words, the breathable membrane 30 may be provided only on the end of the air flow channel 21a that is adjacent to the aerosol-generating substrate segment 10, or may be provided on opposite ends of the air flow channel 21a.

[0125] The breathable membrane 30 is a membrane through which air can pass. That is, the aerosol generated by the aerosol-generating substrate segment 10 can pass through the breathable membrane 30 into the airflow channel 21 a and be cooled in the airflow channel 21 a.

[0126] For example, the breathable membrane 30 may be cigarette paper, non-woven fabric, high molecular polymer, etc., which have good breathability.

[0127] For example, the air permeability of the breathable membrane 30 may be greater than or equal to 500 CU (CU is cm 3 / (min*cm 2 * abbreviation of kpa).

[0128] The breathable membrane 30 covering one end of the airflow channel 21a near the aerosol-generating matrix section 10 can block the mixed-density matrix strips 11 (including the iso-density matrix strips 12, if any) to prevent the matrix strips from accidentally entering the airflow channel 21a (e.g., a centrally heated heating element pushing the matrix strips into the airflow channel 21a). This can prevent the matrix strips from entering the airflow channel 21a, thereby reducing the number of heated matrix strips and affecting the heating effect, and can also prevent the matrix strips from clogging the airflow channel 21a and affecting the draw resistance. It should be noted that the cooling section 21 is not limited to the structural form of the tube body and the breathable membrane 30. In other embodiments, the cooling section 21 can also adopt other structural forms as long as they can achieve a cooling effect.

[0129] In addition, the purpose of covering the air permeable membranes 30 at opposite ends of the air flow channel 21a is to avoid distinguishing the assembly direction of the cooling section 21 during the assembly of the aerosol generating product, thereby improving the convenience of assembly.

[0130] In other embodiments, the breathable membrane 30 may not be provided on the cooling section 21. For example, the breathable membrane 30 may be provided on the aerosol-generating substrate segment 10, and at least one end of the aerosol-generating substrate segment 10 close to the airflow channel 21a may be covered with the breathable membrane 30. In other words, the breathable membrane 30 may be provided only on the end of the aerosol-generating substrate segment 10 close to the airflow channel 21a, or on both the end of the aerosol-generating substrate segment 10 close to the airflow channel 21a and the end of the aerosol-generating substrate segment 10 facing away from the airflow channel 21a. This is equivalent to covering the breathable membrane 30 at both opposite ends of the aerosol-generating substrate segment 10 along the first direction. Covering the breathable membrane 30 at both opposite ends of the aerosol-generating substrate segment 10 along the first direction also allows for easier assembly without distinguishing the assembly direction of the aerosol-generating substrate segment 10 during assembly of the aerosol-generating product.

[0131] In other embodiments, the cooling section 21 may also adopt other structural forms as long as it can achieve the cooling effect.

[0132] In one embodiment, please refer to Figure 12 The filter section 22 may be provided with a suction channel 22a to adjust the suction resistance.

[0133] In one embodiment, please refer to Figures 10 to 12 The functional section 20 may also be provided with a flavoring section 23, which is provided between the cooling section 21 and the filtering section 22 to compensate for the smoke flavor and enhance the smoking taste.

[0134] The structural form of the fragrance section 23 is not limited. For example, the fragrance section 23 can be provided with fiber cotton 231 that has been treated with fragrance, or the fragrance section 23 can be provided with fiber cotton 231 and popping beads 232. The fiber cotton 231 can be fiber cotton 231 that has been treated with fragrance, or it can be fiber cotton 231 that has not been treated with fragrance, and the popping beads 232 are arranged in the fiber cotton 231.

[0135] In other embodiments, the functional section 20 may not be provided with the flavoring section 23 .

[0136] In some embodiments, the aerosol-generating article may not have the functional segment 20. That is, the aerosol-generating substrate segment 10 alone can constitute the aerosol-generating article for use in some special aerosol-generating devices. For example, the aerosol-generating device includes a mouthpiece and a cooling component. The mouthpiece and cooling component can be reused or disposable. The aerosol-generating substrate segment 10 only needs to be inserted into or removed from the heating space. The substrate strip can be the substrate strips and assembly structures described in all the above embodiments, and will not be described in detail here.

[0137] In addition, for an aerosol-generating substrate segment 10 without a functional segment 20 , a breathable membrane 30 may also be provided at at least one end of the aerosol-generating substrate segment 10 according to design requirements.

[0138] In the above embodiments, the aerosol generating substrate segment 10 may be cylindrical, sheet-shaped, square, etc., and may be adapted according to the characteristics of the heating component and the aerosol generating device.

[0139] The aerosol generating substrate segment 10 of the present application will be further described below in conjunction with specific test examples.

[0140] This application test example

[0141] Test sample: an aerosol-generating matrix segment 10 in the shape of a cylindrical tube with equal diameter, wherein the cross-section of the mixed-density matrix strip 11 is circular with a diameter of 1 mm and a density of 870 mg / cm in the first density region 111. 3 The density of the second density region 112 is 1100 mg / cm 3 , the volume ratio of the first density region 111 to the second density region 112 is 1:1.

[0142] Test equipment: central needle aerosol generating device.

[0143] Test conditions: 51% to 56% RH, 25°C, clean room, 2s draw and 28s pause, 10 puffs, 5 tubes in total.

[0144] Test results: See Table 1 (all units are mg, PG is glycerol, VG is propylene glycol).

[0145] Table 1

[0146] Number of mouths Average smoke volume per puff PG by mouth VG Nicotine puff by puff 1 4.95 0.749 0.195 0.060 2 5.60 0.866 0.210 0.066 3 6.16 1.096 0.285 0.081 4 5.89 1.161 0.341 0.089 5 5.38 1.128 0.349 0.088 6 4.95 1.015 0.372 0.081 7 4.75 0.946 0.385 0.079 8 4.41 0.894 0.403 0.078 9 4.14 0.845 0.416 0.075 10 3.92 0.756 0.405 0.067

[0147] Data analysis: The average puff volume (i.e., aerosol) generated by the aerosol-generating matrix segment 10 during the heating process was 5.02 mg / puff, and the RSD (relative standard deviation) of the puff volume was 14.8%. The puff volume, aerosol generating agents in the smoke, nicotine, and other effective substances were relatively stable.

[0148] Comparative test example 1

[0149] Test sample: An aerosol generating matrix segment in the shape of a cylindrical tube with equal diameters. The aerosol generating matrix segment is composed of multiple equal density matrix strips. The cross-section of the equal density matrix strips is circular, with a diameter of 1 mm and a density of 870 mg / cm 3 .

[0150] Test equipment: Same as the test example in this application.

[0151] Test conditions: Same as the test case of this application.

[0152] Test results: See Table 2 (all units are mg, PG is glycerol, VG is propylene glycol).

[0153] Table 2

[0154] Number of mouths Average smoke volume per puff PG by mouth VG Nicotine puff by puff 1 5.13 0.788 0.297 0.058 2 4.92 0.756 0.292 0.057 3 4.72 0.710 0.286 0.052 4 4.43 0.663 0.262 0.052 5 4.14 0.600 0.257 0.050 6 3.75 0.479 0.249 0.050 7 2.99 0.403 0.222 0.042 8 2.52 0.289 0.186 0.038 9 1.80 0.197 0.174 0.026 10 1.23 0.161 0.167 0.022

[0155] Data Analysis: The average puff volume (i.e., aerosol) produced by the aerosol-generating matrix during heating was 3.56 mg / puff, with an RSD (relative standard deviation) of 38.3%. During heating, the aerosol volume produced during the initial puff, as well as the puff-by-puff release of active substances such as aerosol generating agents and nicotine, was sufficient. However, this decreased significantly during the latter stages of the puff. This was primarily due to the low density of the aerosol-generating matrix, resulting in a low and limited effective load, leading to poor consistency between the initial and final puffs.

[0156] Comparative test example 2

[0157] Test sample: An aerosol generating matrix segment in the shape of a cylindrical aerosol. The aerosol generating matrix segment is composed of multiple isodensity matrix strips. The cross-section of the isodensity matrix strips is circular, with a diameter of 1 mm and a density of 1100 mg / cm 3 .

[0158] Test equipment: Same as the test example in this application.

[0159] Test conditions: Same as the test case of this application.

[0160] Test results: See Table 3 (all units are mg, PG is glycerol, VG is propylene glycol).

[0161] Table 3

[0162] Number of mouths Average smoke volume per puff PG by mouth VG Nicotine puff by puff 1 2.23 0.410 0.110 0.034 2 2.59 0.478 0.142 0.039 3 2.94 0.541 0.217 0.044 4 3.91 0.719 0.354 0.059 5 4.88 0.899 0.369 0.074 6 5.86 1.040 0.384 0.085 7 5.15 0.947 0.337 0.078 8 4.95 0.910 0.324 0.075 9 4.44 0.818 0.291 0.067 10 3.75 0.690 0.313 0.057

[0163] Data Analysis: The average amount of smoke (i.e., aerosol) produced by the aerosol-generating matrix during the heating process was 4.07 mg / puff, with an RSD (relative standard deviation) of 29.4%. During the heating process, the amount of smoke produced in the early stages of the puff, as well as the puff-by-puff release of active substances such as aerosol generators and nicotine in the smoke, showed relatively low levels, but showed significant increases in the middle and later stages of the puff. This is primarily due to the higher density and payload of the aerosol-generating matrix. During the early stages of the puff, the aerosol-generating matrix needs to absorb sufficient heat to produce a stable aerosol. Therefore, the puff experience in the early stages of the puff is relatively poor.

[0164] Comparative test example 3

[0165] Homogenized thin-sheet aerosol-generating matrix with a density of 799 mg / cm 3 .

[0166] Test equipment: Same as the test example in this application.

[0167] Test conditions: Same as the test case of this application.

[0168] Test results: See Table 4 (all units are mg, PG is glycerol, VG is propylene glycol).

[0169] Table 4

[0170] Number of mouths Puff volume VG PG by mouth Nicotine puff by puff 1 3.13 0.203 0.011 0.049 2 4.42 0.271 0.021 0.088 3 4.64 0.326 0.026 0.107 4 4.48 0.321 0.027 0.104 5 4.06 0.287 0.027 0.101 6 3.64 0.268 0.026 0.097 7 3.26 0.266 0.026 0.097 8 2.90 0.258 0.025 0.098 9 2.48 0.248 0.025 0.091 10 2.34 0.220 0.023 0.085

[0171] Data analysis: The average amount of smoke (i.e., aerosol) generated by the aerosol-generating matrix during the heating process was 3.54 mg / puff, and the RSD (relative standard deviation) of the smoke volume per puff was 23.8%. Under the same test conditions, the aerosol-generating matrix of Comparative Example 3 generated 29.6% less aerosol before and after puffing than the aerosol-generating matrix segment of the test example of the present application. The main reason is that the thin-sheet aerosol-generating matrix and the aerosol-generating matrix segment of the test example of the present application have obvious morphological differences, and the shape and distribution of the voids are quite different. In addition, the density of the thin-sheet aerosol-generating matrix is ​​lower, and the effective load is lower, which leads to limited aerosol generation during the puffing process.

[0172] In the description of this application, the descriptions with reference to the terms "in one embodiment", "in some embodiments", "in other embodiments", "in yet other embodiments", or "exemplary" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In this application, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine different embodiments or examples described in this application and features of different embodiments or examples, unless they are mutually inconsistent.

[0173] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application are intended to be within the scope of protection of the present application.

Claims

1. An aerosol generating matrix segment, characterized in that include: A plurality of mixed density matrix strips are arranged in parallel into bundles, each of the mixed density matrix strips extending between opposite ends of the aerosol generating matrix segment, and the mixed density matrix strips have a first density region and a second density region arranged along the cross-section of the aerosol generating matrix segment, and the density of the first density region is less than the density of the second density region.

2. The aerosol-generating substrate segment according to claim 1, wherein A plurality of parallel arranged mixed density matrix strips extend along a first direction, and an angle between the first direction and the central axis direction of the aerosol generating matrix segment is no greater than 10 degrees.

3. The aerosol-generating substrate segment according to claim 1 , wherein: The first density region and the second density region respectively have fragrance substances; The boiling point of the aroma substance located in the first density region is the same as the boiling point of the aroma substance located in the second density region; or, The boiling point of the aroma substance located in the first density area is greater than the boiling point of the aroma substance located in the second density area.

4. An aerosol-generating substrate segment according to any one of claims 1 to 3, characterized in that The first density region of each of the mixed density substrate strips is oriented towards the centre of the aerosol-generating substrate segment in a cross-section of the aerosol-generating substrate segment; or, The second density region of each of the mixed density substrate strips is towards the centre of the aerosol-generating substrate segment in a cross-section of the aerosol-generating substrate segment.

5. An aerosol-generating substrate segment according to any one of claims 1 to 3, characterized in that The density of the first density region is 400 mg to 1300 mg / cm 3 and / or, The density of the second density region is 900 mg to 2000 mg / cm 3 .

6. An aerosol-generating substrate segment according to any one of claims 1 to 3, characterized in that The cross-sectional size of the matrix strip is 0.4 mm to 7 mm; and / or, The volume ratio of the first density region to the second density region in the same mixed density matrix strip is 1:10 to 5:

1.

7. An aerosol-generating substrate segment according to any one of claims 1 to 3, characterized in that The aerosol-generating substrate segment further comprises a packaging layer, which is rolled to form a receiving space, and all the mixed-density substrate strips are received in the receiving space.

8. An aerosol-generating substrate segment according to claim 7, characterized in that The filling rate of the aerosol generating matrix segment is 40% to 90%.

9. An aerosol-generating substrate segment according to any one of claims 1 to 3, characterized in that The cross-section of the mixed density matrix strip is in the shape of a polygon, an ellipse, a petal, a circle, a waist circle, a gear, or a special shape; and / or, The mixed density matrix strips are of uniform cross-section.

10. An aerosol-generating substrate segment according to any one of claims 1 to 3, characterised in that The aerosol-generating substrate segment further comprises an isopycnic substrate strip extending between opposite ends of the aerosol-generating substrate segment.

11. An aerosol-generating substrate segment according to claim 10, characterized in that The number of the isodensity matrix strips is multiple; All of the isodensity matrix strips surround the circumference of all of the mixed density matrix strips; or All of the mixed density matrix strips surround the circumference of all of the isodensity matrix strips.

12. An aerosol-generating substrate segment according to claim 11, characterized in that The quantity ratio of the mixed density matrix strips to the equal density matrix strips is 1:3 to 3:

1.

13. An aerosol-generating article, characterized in that include: The aerosol generating substrate segment according to any one of claims 1 to 12, wherein each of the mixed density substrate strips extends in a first direction; a functional segment, the functional segment being arranged at one end of the aerosol generating matrix segment along the first direction, the functional segment comprising a cooling segment and a filtering segment, the cooling segment being located between the filtering segment and the aerosol generating matrix segment; An outer wrapping layer wraps around the outer circumference of the functional segment and the aerosol generating substrate segment.

14. An aerosol-generating article according to claim 13, wherein The length dimension of the aerosol-generating substrate segment along the first direction is 20% to 80% of the length dimension of the aerosol-generating article along the first direction; and / or, The length of the cooling section along the first direction is 25% to 65% of the length of the aerosol generating article along the first direction.

15. An aerosol-generating article according to claim 14 or 13, wherein The cooling section has an air flow channel, and the aerosol generating article further includes a breathable membrane; The breathable membrane is arranged on the cooling section, and at least one end of the air flow channel close to the aerosol generating matrix section is covered with the breathable membrane; or, The breathable membrane is arranged on the aerosol generating substrate segment, and at least one end of the aerosol generating substrate segment close to the air flow channel is covered with the breathable membrane.

16. An aerosol-generating article according to claim 15, wherein The air permeability of the breathable membrane is greater than or equal to 500 CU.

17. An aerosol-generating article according to claim 14 or 13, wherein The filter section has a suction channel.

18. An aerosol-generating article according to claim 14 or 13, wherein The functional section further includes a flavoring section, which is arranged between the cooling section and the filtering section.

19. An aerosol-generating article according to claim 18, wherein The fragrance-enhancing section comprises fiber cotton that has been subjected to fragrance-enhancing treatment; or The fragrance-enhancing section includes fiber cotton and bursting beads arranged in the fiber cotton.

20. An aerosol-generating article, characterized in that include: The aerosol-generating substrate segment according to any one of claims 1 to 12; A breathable membrane is provided at at least one end of the aerosol-generating substrate segment.

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