An aerosol generating product with a multi-layer grooved corrugated structure

Abstract

The present invention discloses an aerosol generating product with a multi-layer grooved corrugated structure, comprising an integrated outer tube (1), and an aerosol generating matrix (6), a blocking member (2), a cavity structure (3) and a filter (4) located inside the outer tube (1); the blocking member (2) comprises a tube wall (21) and a tube cavity (22); the tube wall (21) is a grooved corrugated structure, comprising an outer layer (211), an inner layer (212) and a grooved corrugated layer (213) located therebetween; the outer layer (211) defines the outer surface of the blocking member (2), and the inner layer (212) defines the tube cavity (22); the tube cavity (22) has multiple layers of grooved corrugated layers (213), and a spacing layer (221) is provided between adjacent grooved corrugated layers (213). The blocking member of the present invention comprises multiple layers of grooved corrugated layers, which support each other, and can reserve as many airflow channels as possible under the premise of ensuring the blocking of aerosol generating materials.

Description

Technical Field

[0001] The invention relates to the technical field of heat-not-burn cigarettes, and in particular to an aerosol generating product with a multi-layer grooved corrugated structure. Background Art

[0002] As consumers pay more attention to health issues and demand more personalized experience in cigarette products, the tobacco industry continues to respond to the upgrading of consumer demand and develop various smoking products with reduced tar and harm. Among them, heated cigarettes are different from traditional cigarette products in that they are heated in a way that satisfies consumers' sensory needs for cigarette products while providing a healthier smoking experience.

[0003] Existing integrated aerosol generating products include an outer tube and an aerosol generating matrix filled in the outer tube and other units for cooling and circulating aerosols. At present, the aerosol generating matrix of the integrated aerosol generating product is usually a granular aerosol generating material. Since the bulk aerosol generating particles cannot be fixed, they must be filled into the outer tube by filling, and the particles need to be fixed on both sides of the aerosol generating particle segment by means of sealing paper and sealing pieces. In order to gather aerosols and increase the amount of smoke, the downstream of the sealing piece is usually a cavity (cavity segment) defined by the outer tube, and the downstream of the cavity segment is a filter segment. At present, the above-mentioned aerosol generating products are prepared by the filling method, and the production process sequence is: seal one end of the tube, and then fill the aerosol generating matrix, the sealing piece and the filter piece in turn from the other end. When filling the filter piece, reserve the cavity distance between the sealing piece and the filter piece, and the outer surface of the sealing piece and the filter piece is not glued to the inner wall of the paper tube. After being directly filled into a fixed position, they are fixed by friction with the inner wall of the paper tube. The problems with the above filling preparation method are: 1. During filling, the tube is placed vertically, and the positions of the plugging parts and filters on both sides of the cavity are difficult to locate, which easily leads to the problem of inconsistent axial lengths of the cavity sections of different samples; 2. The outer surfaces of the plugging parts and filters are fixed to the inner wall of the paper tube only by friction. During transportation, the plugging parts and filters are easily displaced toward the cavity section, or the filters are partially sucked out of the outer tube during suction; 3. The filling method limits it to batch filling of individual tubes, and the production efficiency is low.

[0004] In addition, the existing blocking parts are usually multi-through-hole firmware segments (commonly known as "gear parts"), wherein the multi-through-hole firmware segments are usually made of ceramic or silicone, and their outer walls are firmly adhered to the inner wall of the paper tube by adhesive, and their center has at least one axial through hole, and / or, their periphery has at least one peripheral ventilation groove, and their sizes are both for smoke to pass through but do not allow aerosol source material particles to pass through, which can both block aerosol source material particles and transmit aerosols. However, the existence of multi-through-hole firmware segments has increased costs and many operational inconveniences for the industrial manufacturing of particulate aerosol generating products. Therefore, those skilled in the art have always hoped to cancel the multi-through-hole firmware segments. However, after canceling the multi-through-hole firmware segments, an airflow channel segment must be set downstream of the particle segment to collect and contain aerosols, and this segment can also restrain scattered aerosol source material particles, which poses a dilemma, so the design of the blocking parts also needs to be improved.

[0005] Therefore, how to efficiently produce particulate aerosol generating products with a cavity structure, ensure the stability of the sealing parts and the filter parts, and replace the existing gear-shaped sealing parts are key issues that need to be solved in the production of integrated aerosol generating products.

[0006] In order to solve the above problems, the present invention is proposed. Summary of the invention

[0007] The present invention provides an aerosol generating product with a multi-layer grooved corrugated structure, which comprises an integrated outer tube 1, and an aerosol generating matrix 6, a blocking member 2, a cavity structure 3 and a filter member 4 located in the outer tube 1;

[0008] The plugging member 2 includes a tube wall 21 and a tube cavity 22. The tube wall 21 is a grooved corrugated structure, which includes an outer layer 211, an inner layer 212 and a grooved corrugated layer 213 located therebetween. The outer layer 211 defines the outer surface of the plugging member 2, and the inner layer 212 defines the tube cavity 22.

[0009] The tube cavity 22 has multiple layers of grooved corrugated layers 213, and there are spacer layers 221 between adjacent grooved corrugated layers 213. In other words, the plugging member 2 of the present invention has an outer layer 211 itself instead of using the outer tube 1 as the outer layer.

[0010] Preferably, the cavity enclosed by the grooved corrugated layer 213 close to the central axis also has an acetate fiber bundle rod.

[0011] Preferably, the outer layer 211 is selected from paper; the inner layer 212 is selected from tow-like materials or corrugated sheets, the tow-like materials include acetate fiber tows and polylactic acid tows, the corrugated sheets include paper (polymer materials can be coated on the paper), reconstituted tobacco leaves or polymer material sheets; the grooved corrugated layer 213 is selected from paper or non-woven fabrics with a groove structure; the spacer layer 221 is selected from paper or non-woven fabrics. In the actual selection process, if a corrugated sheet is required, non-woven fabrics are preferred, and if a smooth sheet is required, paper is preferred. In addition, preferably, the grooved corrugated layer sheet is pre-pressed to form groove folds, and then wrapped with the outer layer 211 and the inner layer 212 to form a tube wall with a grooved corrugated structure.

[0012] Preferably, the radial thickness of each grooved corrugated layer 213 is consistent or inconsistent; the cross-sectional shape of the grooves in the grooved corrugated layer 213 is "U"-shaped or "V"-shaped.

[0013] Preferably, the grooved corrugated layer 213 also has a flavoring substance layer and / or a smoke-generating substance layer, which can be selected from commonly used flavors and fragrances or smoke-generating agents. For example, the flavoring substance is selected from natural fragrance raw materials and tobacco extracts; the smoke-generating substance is selected from propylene glycol and glycerol.

[0014] Preferably, the cavity structure 3 further comprises a functional material; and / or the cavity structure 3 further comprises an empty tube 32. The tube wall of the empty tube 32 is made of paper, silica gel, acetate fiber, polylactic acid, or non-woven fabric. The functional material can be any form of substance with cooling and fragrance enhancement function in the prior art.

[0015] Preferably, the outer tube 1 at the cavity structure 3 has an air vent 31 that radially penetrates the outer tube 1. When there is an empty tube in the cavity section 3, the air vent 31 penetrates the outer tube 1 and the empty tube at the same time. The purpose of the air vent 31 is to introduce air into the cavity section, on the one hand to reduce the temperature of the aerosol, and on the other hand to reduce the inhalation resistance, so whether the air vent 31 is needed is determined based on the actual aerosol temperature and inhalation resistance. When the air vent 31 is required, it is preferably formed by punching it. Of course, it is also possible not to punch it but to use breathable paper as the outer tube or the empty paper tube in the cavity section, as long as air can be introduced into the cavity section.

[0016] Preferably, there is an adhesive between the outer surface of the blocking member 2 and the inner surface of the outer tube 1, and there is an adhesive between the outer surface of the filter member 4 and the inner surface of the outer tube 1. The adhesive can be selected from ordinary joint glue.

[0017] Preferably, the outer tube 1 is a paper tube or a non-woven fabric tube. The outer tube 1 has an anti-seepage / heat-conducting layer with anti-seepage or heat-conducting functions (especially when the outer tube 1 is a non-woven fabric tube), and the anti-seepage / heat-conducting layer includes a waterproof layer and / or an oil-proof layer and / or a heat-conducting layer;

[0018] The waterproof layer is made of alkyl ketene dimer AKD, cationic rosin glue or iron-free aluminum sulfate mixed, paraffin material; the oil-proof layer is made of fluorocarbon organic matter, modified starch, AKD and paraffin mixture, AKD and modified starch mixture material. The heat-conducting layer is selected from but not limited to the aluminum foil layer, which is added to the inner wall of the cigarette paper tube by pasting; the aluminum foil layer can play the role of waterproof and / or oil-proof, and at the same time, the aluminum foil layer also has the role of heat conduction and heat preservation, so that the smoking material on the inner wall of the cigarette is evenly heated.

[0019] Preferably, the waterproof layer and / or oil-proof layer is coated on the inner wall of the cigarette paper tube by spraying.

[0020] During the storage of cigarettes, the moisture in the smoking material seeps to the outside of the cigarette paper tube, causing yellow spots, so it is necessary to add a waterproof layer to the inner wall of the cigarette paper tube filled with the smoking material. The waterproof layer is made of alkyl ketene dimer AKD, cationic rosin glue or iron-free aluminum sulfate mixed with paraffin material, which can prevent the moisture in the smoking material from seeping to the outside of the cigarette paper tube.

[0021] Similarly, smoking materials will be added with smoking agents, flavors and fragrances. During long-term storage, the smoking agents in the smoking materials will carry the flavors and fragrances to penetrate the outer side of the paper tube, resulting in yellow spots and affecting the appearance of the paper tube. Since the smoking agents are oily, it is necessary to add an oil-proof layer to the inner wall of the cigarette paper tube filled with smoking materials. The oil-proof layer uses a mixture of fluorocarbon organic matter, modified starch, AKD and paraffin, and a mixture of AKD and modified starch, which can prevent the smoking agents in the smoking materials from carrying flavors and fragrances to penetrate the outer wall of the paper tube and prevent the generation of yellow spots.

[0022] Preferably, the aerosol generating substrate 6 is in the form of flakes, filaments, particles, paste strips or rods with a porous structure. The paste strip aerosol generating substrate includes a smoke generator, tobacco powder, an adhesive, flavors and fragrances, a pH regulator, a flame retardant, etc., wherein the adhesive is selected from cassava starch and CMC, and the pH regulator is selected from carbonate or citrate, more preferably selected from potassium carbonate.

[0023] Preferably, when the aerosol generating substrate 6 is in sheet or filament form, it can be reconstituted tobacco leaves or tobacco shreds. When it is in these two properties, the preparation method of the aerosol generating product can adopt a conventional composite rolling method, and of course, preferably, the preparation method 1 described below can also be used, that is, the method of composite first and then filling.

[0024] Preferably, when the aerosol generating substrate 6 is in the form of particles or paste strips, the method for preparing the aerosol generating product comprises the following steps (hereinafter referred to as preparation method 1):

[0025] Step 1, preparation of mouth sticks:

[0026] The plugging member 2 and the filter member 4 are wrapped with the outer tube 1, and the plugging member 2 and the filter member 4 are separated by a first axial length, and the length is defined by the outer tube 1 to form a cavity section 3.

[0027] An aerosol generating substrate accommodating chamber 5 is defined by the outer tube 1 at one end of the blocking member (2) away from the cavity section 3;

[0028] Step 2: Filling of aerosol-generating matrix 6:

[0029] The nozzle rod is in a vertical state, that is, a state perpendicular to the horizontal plane, wherein the aerosol generating substrate containing chamber 5 is vertically facing upward, and the aerosol generating substrate 6 is filled into the aerosol generating substrate containing chamber 5;

[0030] When the aerosol generating substrate 6 is in the shape of a rod having a porous structure, the method for preparing the aerosol generating product comprises the following steps (hereinafter referred to as preparation method 2):

[0031] Step 1, preparation of mouth sticks:

[0032] The plugging member 2 and the filter member 4 are wrapped with the outer tube 1, and the plugging member 2 and the filter member 4 are separated by a first axial length, and the length is defined by the outer tube 1 to form a cavity section 3.

[0033] An aerosol generating substrate containing cavity 5 is defined by the outer tube 1 at one end of the blocking member 2 away from the cavity section 3;

[0034] Step 2: Loading of aerosol generating materials:

[0035] The nozzle rod is placed in a vertical state, that is, a state perpendicular to the horizontal plane, wherein the aerosol generating substrate containing chamber 5 is vertically facing upward, and the flowing aerosol generating material is loaded into the aerosol generating substrate containing chamber 5;

[0036] Step 3: Formation of aerosol generating substrate 6:

[0037] The nozzle bar filled with aerosol generating material is rotated 180° so that the aerosol generating matrix containing cavity 5 faces vertically downward, and is placed on a plane to dry and expand at a certain temperature, so that the aerosol generating material solidifies to form a fixed aerosol generating matrix 6 located in the aerosol generating matrix containing cavity 5.

[0038] In the above-mentioned preparation method 1:

[0039] The preparation of the nozzle rod in step 1 can be in a horizontal state, a vertical state, or any state in between, as long as the nozzle rod is in a vertical state when the aerosol generating material is filled in step 2, so as to facilitate the filling of the aerosol generating matrix 6.

[0040] Preferably, when the aerosol generating substrate 6 is in the form of particles, a sealing step is further provided after step 2, so as to form a sealing film 7 by moving the aerosol generating substrate containing cavity 5 containing the aerosol generating substrate 6 away from the end surface of the filtering section; when the aerosol generating substrate 6 is in the form of a paste strip, the sealing step is not required, and of course, there is no conflict in having the sealing step. In the actual production process, it is determined whether a sealing film is required according to the situation of the aerosol generating substrate 6.

[0041] Preferably, in step one, the nozzle rod strip can be cut into a plurality of nozzle rods, and the plurality of nozzle rods are connected via the filter element 4 and / or the aerosol generating substrate accommodating chamber 5 .

[0042] Preferably, there is a cutting step between step 1 and step 2, wherein the cutting is performed at the connected filter element 4 and / or the connected aerosol generating substrate containing cavity 5 to cut the nozzle rod strip into a plurality of nozzle rods.

[0043] That is to say, the mouth stick strip in step one can be a single mouth stick, that is, the outer tube 1 contains a plugging member 2, a cavity section 3, a filter member 4 and an aerosol generating matrix containing chamber 5. In this case, when performing step two, it is only necessary to turn the aerosol generating matrix containing chamber 5 vertically upward. Of course, the mouth stick strip in step one can be cut into multiple mouth sticks, that is, the outer tube 1 contains a plugging member 2, a cavity section 3, a filter member 4 and an aerosol generating matrix containing chamber 5, and multiple mouth sticks are connected by the filter member 4 and / or the aerosol generating matrix containing chamber 5, and the connection has twice the axial length of the filter member 4 or the aerosol generating matrix containing chamber 5. In this case, when performing step two, it is also necessary to first cut the mouth stick strip into multiple mouth sticks, and then turn the aerosol generating matrix containing chamber 5 vertically upward. That is to say, the axial length of the filter element at the connection is twice the axial length of the filter element in a single nozzle rod, and similarly, the axial length of the aerosol generating substrate accommodating chamber reserved at the connection is twice the axial length of the aerosol generating substrate accommodating chamber in a single nozzle rod, so that each nozzle rod has a complete filter element and an aerosol generating substrate accommodating chamber after cutting.

[0044] In the above-mentioned preparation method 2:

[0045] In step 2, the flowing aerosol-generating material may be loaded into the aerosol-generating substrate containing cavity 5 by any method, such as squeezing;

[0046] The preparation of the nozzle rod in step 1 can be in a horizontal state, a vertical state, or any state in between, as long as the nozzle rod is in a vertical state when the aerosol generating material is loaded in step 2, so as to facilitate the quantitative extrusion of the flowing aerosol generating material.

[0047] The purpose of placing the aerosol generating rod 6 on a flat surface after inversion and drying and expanding at a certain temperature is to make the end surface of the aerosol generating rod 6 away from the filter element flush.

[0048] Preferably, in step one, the nozzle rod strip can be cut into multiple nozzle rods, and the multiple nozzle rods are connected through the filter element 4 and / or the aerosol generating matrix containing cavity 5; at this time, there is also a cutting step between step one and step two, and the nozzle rod strip is cut at the connected filter element 4 and / or the connected aerosol generating matrix containing cavity 5 to cut the nozzle rod strip into multiple nozzle rods.

[0049] That is to say, the mouth stick strip in step one can be a single mouth stick, that is, the outer tube 1 contains a plugging member 2, a cavity section 3, a filter member 4 and an aerosol generating matrix containing chamber 5. In this case, when performing step two, it is only necessary to turn the aerosol generating matrix containing chamber 5 vertically upward. Of course, the mouth stick strip in step one can be cut into multiple mouth sticks, that is, the outer tube 1 contains a plugging member 2, a cavity section 3, a filter member 4 and an aerosol generating matrix containing chamber 5, and multiple mouth sticks are connected by the filter member 4 and / or the aerosol generating matrix containing chamber 5, and the connection has twice the axial length of the filter member 4 or the aerosol generating matrix containing chamber 5. In this case, when performing step two, it is also necessary to first cut the mouth stick strip into multiple mouth sticks, and then turn the aerosol generating matrix containing chamber 5 vertically upward. That is to say, the axial length of the filter element at the connection is twice the axial length of the filter element in a single nozzle rod, and similarly, the axial length of the aerosol generating substrate accommodating chamber reserved at the connection is twice the axial length of the aerosol generating substrate accommodating chamber in a single nozzle rod, so that each nozzle rod has a complete filter element and an aerosol generating substrate accommodating chamber after cutting.

[0050] Preferably, in step 2, the flowing aerosol generating material comprises a smoking raw material, a smoking aid and a solvent, the smoking raw material is crushed in advance and then passed through a 40-200 mesh sieve, and then the sieved smoking raw material is mixed with the smoking aid and the solvent in a certain proportion and then blended into a flowing aerosol generating material, which is similar to a paste state;

[0051] Preferably, in step 2, the amount of the flowing aerosol generating material filled is 50-95% of the volume of the aerosol generating substrate containing chamber 5, and more preferably 90%.

[0052] Preferably, in step 2, the flowing aerosol generating material further contains a binder, and the flowing aerosol generating material uses its own binder to adhere to the inner wall of the outer tube 1 during the drying and expansion process. The binder is selected from chitosan, hydroxyethylated composite modified ethyl cellulose, guar gum, carboxymethyl cellulose, starch, modified starch, plant cellulose, microcrystalline cellulose, hydroxyethyl cellulose, and hydroxyethyl methyl cellulose.

[0053] Preferably, in step 2, the flowing aerosol generating material is squeezed into the aerosol generating substrate containing cavity 5 along the inner surface of the outer tube 1, and the squeezed flowing aerosol generating material forms a central cavity, which is the volume reserved for the expansion of the aerosol generating material; or,

[0054] The flowing aerosol generating material is loaded into the aerosol generating matrix containing cavity 5 in two parts, wherein the first part of the aerosol generating material is squeezed into the aerosol generating matrix containing cavity 5 along the inner surface of the outer tube 1, and the squeezed first part of the aerosol generating material forms a central cavity, and the second part of the aerosol generating material is squeezed into the central cavity, and there is a gap between the first part of the aerosol generating material and the second part of the aerosol generating material, and the gap is the volume reserved for the expansion of the aerosol generating material.

[0055] Preferably, there is a sealing step after step 2 to form a sealing film on the end surface of the aerosol generating substrate containing cavity 5 containing the aerosol generating substrate 6 away from the filtering section. In the actual production process, it is determined whether a sealing film is needed according to the condition of the aerosol generating substrate 6.

[0056] Preferably, the drying temperature in step three depends on the solvent in the aerosol generating material. When the solvent is ethanol, the drying temperature is 50-60°C and the drying time is 0.5-1h; when the solvent is water, the drying temperature is 60-70°C and the drying time is 1-2h.

[0057] Compared with the prior art, the present invention has the following beneficial effects:

[0058] 1. The sealing member of the present invention includes a multi-layer grooved corrugated layer. The axial cavity formed by the groove structure can be used as an airflow channel for aerosol circulation. Furthermore, the grooved corrugated layer 213 also has a flavoring material layer and / or a smoke-generating material layer, which can further add fragrance to the aerosol flowing through and increase the amount of smoke. The multi-layer grooved corrugated layers support each other, and can reserve as many airflow channels as possible under the premise of ensuring the blocking of the aerosol generating material. The present invention eliminates the multi-through-hole firmware section for the first time, and combines the grooved corrugated component with the bulk aerosol source material particles. Moreover, due to the tube wall of the grooved corrugated structure and the blocking structure in the tube cavity, it can play a role in restraining the aerosol source material particles, without the need to use multi-through-hole firmware.

[0059] Regarding the preparation method:

[0060] 2. The present invention firstly forms the remaining units except the aerosol generating particle segment by a rolling and compounding method, reserves a cavity for filling the aerosol generating material during compounding, and then cuts them as needed after compounding, and then places the cut mouthpiece with the aerosol generating matrix containing cavity 5 vertically, and then fills the aerosol generating matrix containing cavity 5 with the aerosol generating material. Since the blocking member 2 and the filter member 4 are both formed by a composite rolling method, the blocking member 2 and the filter member 4 are easier to position in the axial position, which can better ensure the consistency of the axial length of the cavity segments 3 of different samples.

[0061] 3. Since both the plugging member 2 and the filter member 4 are formed by a composite rolling method, adhesive can be more conveniently applied between the outer surfaces of the plugging member 2 and the filter member 4 and the inner surface of the paper tube, thereby ensuring that the two ends will not be displaced during the suction process or transportation process.

[0062] 4. The present invention prepares aerosol generating products by compounding first and then filling. It can compound multiple nozzles at the same time, and then fill the aerosol generating materials after cutting. Since all units except the aerosol generating materials are in the form of compounding, the efficiency is greatly improved compared with filling each unit individually.

[0063] 5. The present invention loads the flowing aerosol generating material by extrusion, and then makes the aerosol generating matrix containing cavity 5 face downward vertically, and is placed on a plane to dry and expand at a certain temperature, so that the aerosol generating material solidifies to form a fixed aerosol generating rod 6 located in the aerosol generating matrix containing cavity 5. The extrusion method has higher production efficiency, and the aerosol generating rod 6 obtained after drying and expansion has a porous structure, which is conducive to the release and circulation of aerosol. The purpose of placing the aerosol generating rod 6 on a plane after inversion and drying and expanding at a certain temperature is to make the end surface of the aerosol generating rod 6 away from the filter element flush. BRIEF DESCRIPTION OF THE DRAWINGS

[0064] Figure 1 Schematic diagram of the structure of the nozzle bar strip with two nozzle bars before cutting in Example 1 and Example 3, where the dotted line is the cutting position;

[0065] Figure 2 Schematic diagram of the structure of the nozzle bar strip with three nozzle bars before cutting in Example 1 and Example 4, where the dotted line is the cutting position;

[0066] Figure 3 This is a schematic diagram of the structure of the aerosol generating product prepared in Example 1.

[0067] Figure 4 This is a cross-sectional view of one end of the sealing member close to the aerosol generating matrix.

[0068] The names of the figure marks in the figure description: 1-outer tube, 2-sealing member, 3-cavity structure, 4-filtering member, 5-aerosol generating matrix containing chamber, 6-aerosol generating matrix, 21-tube wall, 22-tube cavity, 31-vent, 32-empty tube, 211-outer layer, 212-inner layer, 213-grooved corrugated layer, 221-spacer layer. DETAILED DESCRIPTION

[0069] The present invention is further described in detail below in conjunction with embodiments.

[0070] Those skilled in the art will appreciate that the following examples are only used to illustrate the present invention and should not be considered to limit the scope of the present invention. If no specific techniques or conditions are specified in the examples, the techniques or conditions described in the literature in the art or the product specifications are used. If the manufacturer of the materials or equipment used is not specified, they are all conventional products that can be purchased.

[0071] Those skilled in the art will appreciate that, unless expressly stated otherwise, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of the present invention refers to the presence of the features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof. It should be understood that when we refer to an element as being "connected" to another element, it may be directly connected to the other element, or there may be intermediate elements. In addition, the "connection" used herein may include wireless connections.

[0072] In the description of the present invention, unless otherwise specified, "plurality" means two or more than two. The terms "inside", "upper", "lower", etc., indicating positions or state relationships, are based on the positions or state relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operate in a specific position, and therefore cannot be understood as limiting the present invention.

[0073] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "provided with" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention will be understood according to specific circumstances.

[0074] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein, including technical and scientific terms, have the same meaning as those generally understood by those skilled in the art in the art to which the present invention belongs. It should also be understood that terms such as those defined in common dictionaries should be understood to have meanings consistent with the meanings in the context of the prior art, and will not be interpreted with idealized or overly formal meanings unless defined as herein.

[0075] Example 1

[0076] This embodiment prepares a multi-stage aerosol generating product according to preparation method 2, which includes the following steps:

[0077] Step 1, preparation of mouth sticks:

[0078] The plugging member 2 and the filter member 4 are wrapped with the outer tube 1, and the plugging member 2 and the filter member 4 are separated by a first axial length, and the length is defined by the outer tube 1 to form a cavity section 3.

[0079] An aerosol generating substrate containing cavity 5 is defined by the outer tube 1 at one end of the blocking member 2 away from the cavity section 3;

[0080] Step 2: Loading of aerosol generating materials:

[0081] The nozzle rod is placed in a vertical state, that is, a state perpendicular to the horizontal plane, wherein the aerosol generating substrate containing chamber 5 is vertically facing upward, and the flowing aerosol generating material is squeezed into the aerosol generating substrate containing chamber 5;

[0082] Step 3: Formation of aerosol generating rod 6:

[0083] The mouthpiece bar filled with aerosol generating material is rotated 180° so that the aerosol generating substrate containing cavity 5 is vertically facing downward, and is placed on a plane to dry and expand at a certain temperature, so that the aerosol generating material solidifies to form a fixed aerosol generating rod 6 located in the aerosol generating substrate containing cavity 5.

[0084] In step 2, the flowing aerosol generating material is loaded into the aerosol generating substrate containing cavity 5 by extrusion; in step 1, the mouthpiece strip is prepared in a horizontal state and is prepared by using an existing compounding machine.

[0085] In step 1, the nozzle rod strip can be cut into two nozzle rods, and the two nozzle rods are connected through the aerosol generating substrate accommodating chamber 5; at this time, there is a cutting step between step 1 and step 2, and the nozzle rod strip is cut at the connected aerosol generating substrate accommodating chamber 5 to cut the nozzle rod strip into two nozzle rods. The connection part has twice the axial length of the aerosol generating substrate accommodating chamber 5, so that each nozzle rod has a complete aerosol generating substrate accommodating chamber after cutting.

[0086] In step 2, the flowing aerosol generating material includes a smoking raw material, a smoking aid and a solvent. The smoking raw material is crushed in advance and passed through a 40-200 mesh sieve. Then, the sieved smoking raw material is mixed with the smoking aid and the solvent in a certain proportion and blended into a flowing aerosol generating material, which is similar to a paste state.

[0087] In step 2, the amount of the flowing aerosol generating material filled is 90% of the volume of the aerosol generating substrate containing chamber 5 .

[0088] In step 2, the flowing aerosol generating material also contains a binder, and the flowing aerosol generating material uses its own binder to adhere to the inner wall of the outer tube 1 during the drying and expansion process. The binder is selected from carboxymethyl cellulose.

[0089] In step 2, the flowing aerosol generating material is squeezed into the aerosol generating substrate containing cavity 5 along the inner surface of the outer tube 1, and the squeezed flowing aerosol generating material forms a central cavity, which is the volume reserved for the expansion of the aerosol generating material.

[0090] The drying temperature in step 3 depends on the solvent in the aerosol generating material. In this embodiment, the solvent is water, the drying temperature is 60° C., and the drying time is 1 hour.

[0091] The cavity section 3 also includes an empty tube, which may be an empty paper tube. The outer tube 1 at the cavity section 3 has an air vent 31 that radially penetrates the outer tube 1. When the cavity section 3 has an empty tube, the air vent 31 penetrates both the outer tube 1 and the empty tube.

[0092] There is an adhesive between the outer surface of the blocking member 2 and the inner surface of the outer tube 1 , and there is an adhesive between the outer surface of the filter member 4 and the inner surface of the outer tube 1 .

[0093] The outer tube 1 is a paper tube.

[0094] The aerosol generating product with a multi-layer grooved corrugated structure prepared in this embodiment includes an integrated outer tube 1, and an aerosol generating matrix 6, a blocking member 2, a cavity structure 3 and a filter 4 located in the outer tube 1;

[0095] The plugging member 2 includes a tube wall 21 and a tube cavity 22. The tube wall 21 is a grooved corrugated structure, which includes an outer layer 211, an inner layer 212 and a grooved corrugated layer 213 located therebetween. The outer layer 211 defines the outer surface of the plugging member 2, and the inner layer 212 defines the tube cavity 22.

[0096] The tube cavity 22 has multiple layers of grooved corrugated layers 213, and there are spacer layers 221 between adjacent grooved corrugated layers 213. In other words, the plugging member 2 of the present invention has an outer layer 211 itself instead of using the outer tube 1 as the outer layer.

[0097] The outer layer 211 is selected from paper; the inner layer 212 is selected from paper; the grooved corrugated layer 213 is selected from non-woven fabric with a groove structure; and the spacer layer 221 is selected from non-woven fabric.

[0098] The radial thickness of each grooved corrugated layer 213 is inconsistent; the cross-sectional shape of the grooves in the grooved corrugated layer 213 is "V"-shaped.

[0099] The grooved corrugated layer 213 also has a flavoring material layer and a smoke-generating material layer.

[0100] Example 2

[0101] This embodiment prepares a multi-stage aerosol generating product according to the preparation method 2. The difference between this embodiment and embodiment 1 is that: 1. In step 1, the mouth rod strip can be cut into 4 mouth rods, and the 4 mouth rods are connected through the filter element 4 and the aerosol generating matrix containing cavity 5; at this time, there is also a cutting step between step 1 and step 2, and the mouth rod strip is cut at the connected filter element 4 and the connected aerosol generating matrix containing cavity 5 to cut the mouth rod strip into 4 mouth rods. The axial length of the filter element at the connection is twice the axial length of the filter element in a single mouth rod. Similarly, the axial length of the aerosol generating matrix containing cavity reserved at the connection is twice the axial length of the aerosol generating matrix containing cavity in a single mouth rod. So that each mouth rod has a complete filter element and an aerosol generating matrix containing cavity after cutting. 2. In step 2, the flowing aerosol generating material is loaded into the aerosol generating substrate containing cavity 5 in two parts, wherein the first part of the aerosol generating material is squeezed into the aerosol generating substrate containing cavity 5 along the inner surface of the outer tube 1, and the squeezed first part of the aerosol generating material forms a central cavity, and the second part of the aerosol generating material is squeezed into the central cavity, and there is a gap between the first part of the aerosol generating material and the second part of the aerosol generating material, and the gap is the volume reserved for the expansion of the aerosol generating material.

[0102] Example 3

[0103] In this embodiment, a multi-stage aerosol generating product is prepared according to the preparation method 1. The structure of the blocking member in the aerosol generating product is the same as that in the embodiment 1, which includes the following steps:

[0104] Step 1, preparation of mouth sticks:

[0105] The plugging member 2 and the filter member 4 are wrapped with the outer tube 1, and the plugging member 2 and the filter member 4 are separated by a first axial length, and the length is defined by the outer tube 1 to form a cavity section 3.

[0106] An aerosol generating substrate accommodating chamber 5 is defined by the outer tube 1 at one end of the blocking member (2) away from the cavity section 3;

[0107] Step 2: Filling of aerosol-generating matrix 6:

[0108] The nozzle rod is placed in a vertical state, ie, perpendicular to the horizontal plane, wherein the aerosol generating substrate accommodating chamber 5 is vertically facing upward, and the aerosol generating substrate 6 is filled into the aerosol generating substrate accommodating chamber 5.

[0109] In step one, the mouth stick is prepared in a horizontal state.

[0110] In step 2, the aerosol generating substrate 6 is in a granular form. When the aerosol generating substrate 6 is in a granular form, step 2 is followed by a sealing step to form a sealing film 7 on the aerosol generating substrate containing cavity 5 containing the aerosol generating substrate 6 away from the end surface of the filtering section.

[0111] In step 1, the nozzle rod strip can be cut into two nozzle rods, and the two nozzle rods are connected through the aerosol generating substrate accommodating chamber 5; at this time, there is a cutting step between step 1 and step 2, and the nozzle rod strip is cut at the connected aerosol generating substrate accommodating chamber 5 to cut the nozzle rod strip into two nozzle rods. The connection part has twice the axial length of the aerosol generating substrate accommodating chamber 5, so that each nozzle rod has a complete aerosol generating substrate accommodating chamber after cutting.

[0112] The cavity section 3 also includes an empty tube, which may be an empty paper tube. The outer tube 1 at the cavity section 3 has an air vent 31 that radially penetrates the outer tube 1. When the cavity section 3 has an empty tube, the air vent 31 penetrates both the outer tube 1 and the empty tube.

[0113] There is an adhesive between the outer surface of the blocking member 2 and the inner surface of the outer tube 1 , and there is an adhesive between the outer surface of the filter member 4 and the inner surface of the outer tube 1 .

[0114] The outer tube 1 is a paper tube.

[0115] Example 4

[0116] This embodiment prepares a multi-stage aerosol generating product according to preparation method 1. The difference between this embodiment and embodiment 3 is that: 1. In step 1, the mouth rod strip can be cut into 4 mouth rods, and the 4 mouth rods are connected through the filter element 4 and the aerosol generating matrix containing chamber 5; at this time, there is also a cutting step between step 1 and step 2, and the mouth rod strip is cut at the connected filter element 4 and the connected aerosol generating matrix containing chamber 5 to cut the mouth rod strip into 4 mouth rods. The axial length of the filter element at the connection is twice the axial length of the filter element in a single mouth rod. Similarly, the axial length of the aerosol generating matrix containing chamber reserved at the connection is twice the axial length of the aerosol generating matrix containing chamber in a single mouth rod. So that each mouth rod has a complete filter element and an aerosol generating matrix containing chamber after cutting. 2. In step 2, the aerosol generating matrix 6 is in the form of a paste strip. When the aerosol generating matrix 6 is in the form of a paste strip, a sealing step is not required.

Claims

1. An aerosol generating product having a multi-layer grooved corrugated structure, characterized in that: It comprises an integrated outer tube (1), and an aerosol generating matrix (6), a blocking member (2), a cavity structure (3) and a filter member (4) located inside the outer tube (1); The plugging member (2) comprises a tube wall (21) and a tube cavity (22); the tube wall (21) is a grooved corrugated structure, comprising an outer layer (211), an inner layer (212), and a grooved corrugated layer (213) located therebetween; the outer layer (211) defines the outer surface of the plugging member (2), and the inner layer (212) defines the tube cavity (22); The tube cavity (22) has multiple layers of grooved corrugated layers (213), and a spacing layer (221) is provided between adjacent grooved corrugated layers (213); When the aerosol generating substrate (6) is in the form of particles or paste strips, the method for preparing the aerosol generating product comprises the following steps: Step 1, preparation of mouth sticks: The plugging member (2) and the filter member (4) are wrapped by an outer tube (1), wherein a first axial length is spaced between the plugging member (2) and the filter member (4), and the length is defined by the outer tube (1) to form a cavity section (3). An aerosol generating matrix containing cavity (5) is defined by the outer tube (1) at one end of the blocking member (2) away from the cavity section (3); Step 2: Filling of the aerosol-generating matrix (6): The nozzle stick is placed in a vertical state, wherein the aerosol generating substrate containing chamber (5) is vertically facing upwards, and the aerosol generating substrate (6) is filled into the aerosol generating substrate containing chamber (5); When the aerosol generating substrate (6) is in the shape of a rod having a porous structure, the method for preparing the aerosol generating product comprises the following steps: Step 1, preparation of mouth sticks: The plugging member (2) and the filter member (4) are wrapped by an outer tube (1), wherein a first axial length is spaced between the plugging member (2) and the filter member (4), and the length is defined by the outer tube (1) to form a cavity section (3). An aerosol generating matrix containing cavity (5) is defined by the outer tube (1) at one end of the blocking member (2) away from the cavity section (3); Step 2: Loading of aerosol generating materials: The nozzle rod is placed in a vertical state, wherein the aerosol generating substrate containing chamber (5) is vertically facing upwards, and the flowing aerosol generating material is loaded into the aerosol generating substrate containing chamber (5); Step 3, formation of aerosol generating matrix (6): The nozzle rod containing the aerosol generating material is rotated 180 degrees so that the aerosol generating substrate containing cavity (5) is vertically facing downwards, and is placed on a plane to dry and expand at a certain temperature, so that the aerosol generating material solidifies to form a fixed aerosol generating substrate (6) located in the aerosol generating substrate containing cavity (5).

2. The aerosol generating product having a multi-layer grooved corrugated structure according to claim 1, characterized in that: The cavity enclosed by the grooved corrugated layer (213) close to the central axis also contains an acetate fiber bundle rod.

3. The aerosol generating product having a multi-layer grooved corrugated structure according to claim 1, characterized in that: The outer layer (211) is selected from paper; the inner layer (212) is selected from tow-like materials or corrugated sheets, the tow-like materials include acetate fiber tows and polylactic acid tows, the corrugated sheets include paper, reconstituted tobacco leaves or polymer material sheets; the grooved corrugated layer (213) is selected from paper or non-woven fabrics having a groove structure; the spacer layer (221) is selected from paper or non-woven fabrics.

4. The aerosol generating product having a multi-layer grooved corrugated structure according to claim 1, characterized in that: The radial thickness of each grooved corrugated layer (213) is consistent or inconsistent; the cross-sectional shape of the grooves in the grooved corrugated layer (213) is "U"-shaped or "V"-shaped.

5. The aerosol generating product having a multi-layer grooved corrugated structure according to claim 1, characterized in that: The grooved corrugated layer (213) is also provided with a flavoring material layer and / or a smoke-generating material layer.

6. The aerosol generating product having a multi-layer grooved corrugated structure according to claim 1, characterized in that: The cavity structure (3) further comprises a functional material; and / or, The cavity structure (3) also contains a hollow tube (32).

7. The aerosol generating product having a multi-layer grooved corrugated structure according to claim 1, characterized in that: The outer tube (1) at the cavity structure (3) is provided with a vent hole (31) which radially penetrates the outer tube (1).

8. The aerosol generating product having a multi-layer grooved corrugated structure according to claim 1, characterized in that: There is an adhesive between the outer surface of the blocking member (2) and the inner surface of the outer tube (1), and there is an adhesive between the outer surface of the filter member (4) and the inner surface of the outer tube (1).

9. The aerosol generating product having a multi-layer grooved corrugated structure according to claim 1, characterized in that: The aerosol generating matrix (6) is in the form of a sheet, a filament, a granule, a paste strip, or a rod having a porous structure.

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