Aerosol-generating products with tightly packed sections

Abstract

The aerosol-generating product having a tight-fitting section (1) includes the tight-fitting section (1), the aerosol-generating substrate section (2), the gas path section (3), and the filter section (4). The tight-fitting section (1) is located at one end of the aerosol-generating substrate section (2) that is separated from the filter section (4). The tight-fitting section (1) has a smaller axial air permeability than the aerosol-generating substrate section (2). The tight-fitting section (1) can reduce or prevent cold air from entering the aerosol-generating substrate section (2) via the tight-fitting section (1). This prevents a small amount of atomized aerosol in the aerosol-generating substrate section (2) from coming into contact with the cold air and condensing, and then flowing out from the end surface of the aerosol-generating substrate section (2). In addition, when inhalation is stopped, the tight-fitting section (1) can prevent aerosol from flowing back into the aerosol-generating substrate section (2), condensing, and then flowing out from the end surface. This also avoids the problem of aerosol condensation flowing out from the end face of the aerosol-generating substrate section (2) and soiling the device.

Description

Technical Field

[0001] The invention patent relates to the technical field of the production of low-temperature non-combustion heating products, and specifically relates to aerosol generating products having a tight section.

Background Art

[0002] Generally, the heating temperature of non-combustion heating aerosol generation substrates is between 250 and 350 °C. Compared with conventional combustible cigarettes, non-combustion heating aerosol generation products can significantly reduce the harm caused by harmful substances in the aerosol generation substrate to smokers while maintaining the taste of conventional cigarettes. Also, since there is no decomposition process due to high-temperature combustion, the release of tar and harmful substances in the aerosol generation substrate is reduced, and the harm of passive smoking can be significantly reduced.

[0003] Currently, heating technologies for aerosol-generating products typically include resistance heating or electromagnetic heating. Heating elements usually take the form of a tubular heating tube that surrounds and heats the aerosol-generating product, or a tip / pin-shaped heating tip / heating pin that is inserted into the aerosol-generating product for heating. In resistance heating, the resistive lines on the heating element generate heat when energized, heating the aerosol-generating product. In electromagnetic heating, the heating element generates an electric current by sensing a magnetic field, generating heat and heating the aerosol-generating product. Conventional non-combustion, heating-type aerosol-generating products include a filter section for inhalation at the user's mouth and an aerosol-generating substrate section separated from the filter section. Airflow can enter the aerosol-generating product from the end face of the aerosol-generating substrate section and exit from the end face of the filter section. In this case, the following problems arise. In other words, regardless of whether the aerosol-generating substrate is heated by a heating tube or a heating tip / heating pin, even when the user is not inhaling, a small amount of cold air enters the aerosol-generating substrate section from the end face. As a result, the small amount of atomized aerosol in the aerosol-generating substrate section comes into contact with the cold air and condenses, and the resulting liquid flows out from the end face of the aerosol-generating substrate section, contaminating the device. In addition, when the user inhales, the negative pressure in the aerosol-generating substrate section decreases, causing the aerosol to flow into the filter section. However, when the user is not inhaling, there is no suction force from the user, so the negative pressure causes a small amount of aerosol to flow from the filter section towards the aerosol-generating substrate section. If condensation occurs, the resulting liquid flows out from the end face of the aerosol-generating substrate section, contaminating the device.

[0004] Therefore, avoiding the re-condensation of atomized aerosols is one of the important methods for preventing equipment contamination. [Overview of the Initiative] [Problems that the invention aims to solve]

[0005] To solve the above problems, we propose the present invention. [Means for solving the problem]

[0006] The present invention provides an aerosol generating product having a tight section including a tight section 1, an aerosol generating substrate section 2, a gas pathway section 3, and a filter section 4.

[0007] The gas pathway section 3 is located between the aerosol-generating substrate section 2 and the filter section 4.

[0008] The tightly packed section 1 is located at one end of the aerosol-generating substrate section 2 that is separated from the filter section 4.

[0009] The gas path section 3 has an airflow path 31 that penetrates the gas path section 3 in the axial direction.

[0010] The axial air permeability of the tightly packed section 1 is less than the axial air permeability of the aerosol-generating substrate section 2.

[0011] Preferably, the axial air permeability of the tightly sealed section 1 is 0. That is, it does not allow gas to pass through in the axial direction. It should be explained that when the tightly sealed section 1 is selected from a non-permeable material, the axial air permeability of the tightly sealed section 1 that is created will be 0. That is, it does not allow gas to pass through in the axial direction. This prevents gas from entering the aerosol-generating substrate section 2 via the tightly sealed section 1. Also, when the tightly sealed section 1 is selected from a permeable material, such as the aerosol-generating substrate material described later, the density of the tightly sealed section 1 that is created must be greater than the density of the aerosol-generating substrate section 2. That is, the axial air permeability of the tightly sealed section 1 must be less than the axial air permeability of the aerosol-generating substrate section 2. This reduces the amount of gas that enters the aerosol-generating substrate section 2 via the tightly sealed section 1. Both of these two types of effects, prevention and reduction, enable the realization of the beneficial effects of the present invention.

[0012] The tightly packed section 1, the aerosol-generating substrate section 2, the gas path section 3, and the filter section 4 are formed by being wound with a winding material, or by being packed and loaded into an integrally molded tubular material.

[0013] Preferably, the tightly packed section 1 is selected from a non-aerosol-generating material, but not limited to, carbon fiber material, metal film, ceramics, or polymer material. The polymer material is selected from, but not limited to, polyethylene, polypropylene, polyvinyl chloride, polyethylene terephthalate, or polylactic acid.

[0014] Preferably, the tightly packed section 1 is selected from an aerosol-generating material. Furthermore, the bulk density of the tightly packed section 1 is greater than the bulk density of the aerosol-generating substrate section 2. This ensures that the axial air permeability of the tightly packed section 1 is less than that of the aerosol-generating substrate section 2. In other words, in this case, the material of the tightly packed section 1 and the material of the aerosol-generating substrate section 2 are the same, both being aerosol-generating materials, but their tightly packed densities at both ends are completely different, with the density of the tightly packed section 1 being greater than that of the aerosol-generating substrate section 2. Furthermore, the axial air permeability of the tightly packed section 1 is less than that of the aerosol-generating substrate section 2. When the tightly packed section 1 is an aerosol-generating material, the tightly packed section 1 is formed integrally with the aerosol-generating substrate section 2 during the manufacturing process of the aerosol-generating substrate, and a high-density aerosol-generating substrate section can be formed as the tightly packed section 1 during the compression process, making manufacturing easy.

[0015] Preferably, the gas path section 3 is hollow and has side walls and a hollow chamber. The hollow chamber is an airflow path 31 that penetrates the gas path section 3 in the axial direction.

[0016] Preferably, the side wall of the gas path section 3 is further provided with a side flow hole 32 that penetrates the side wall.

[0017] Preferably, the axial position of the side flow holes 32 is close to one end of the aerosol-generating substrate section 2 and spaced away from one end of the filter section 4. The reason for bringing it even closer to one end of the aerosol-generating substrate section 2 is that the closer the axial position of the side flow holes 32 is to the aerosol-generating substrate section 2, the easier it is to extract aerosols from the aerosol-generating substrate section 2.

[0018] Preferably, the number of side flow holes 32 may be 6 to 8, but is not limited to this.

[0019] Preferably, the gas pathway section 3 includes a first gas pathway section 33 adjacent to the aerosol-generating substrate section 2 and a second gas pathway section 34 adjacent to the filter section 4. The first gas pathway section 33 and the second gas pathway section 34 may be a single unit or two separate sections.

[0020] Preferably, the cross-sectional area of ​​the airflow path 31 in the first gas path section 33 is less than or equal to the cross-sectional area of ​​the airflow path 31 in the second gas path section 34, or greater than the cross-sectional area of ​​the airflow path 31 in the second gas path section 34. If the gas path section 3 is hollow, it has side walls and a hollow chamber. The hollow chamber is an airflow path 31 that penetrates the gas path section 3 in the axial direction. The inner diameter of the hollow chamber body in the first gas path section 33 is less than or equal to the inner diameter of the hollow chamber body in the second gas path section 34, or greater than the inner diameter of the hollow chamber body in the second gas path section 34. In this case, these connection points may be tapered slopes, vertical cross-sections, flat angles, or have an R-chamfered structure. When the inner diameter of the hollow chamber body in the first gas path section 33 is greater than the inner diameter of the hollow chamber body in the second gas path section 34, the amount of air drawn in by the first gas path section 33 increases. Therefore, the extraction effect on aerosols becomes better, and the amount of aerosol increases. On the other hand, if the inner diameter of the hollow chamber in the first gas pathway section 33 is smaller than the inner diameter of the hollow chamber in the second gas pathway section 34, the second gas pathway section 34 can collect more aerosols, resulting in a better condensation effect on the aerosols. In addition, the cooling effect on the aerosols is improved, making them more suitable for inhalation.

[0021] Preferably, the gas path section 3 is cylindrical and may be made from acetate fiber material or polymer material, but is not limited to these.

[0022] The aerosol-generating substrate section 2 contains an aerosol-generating material. This aerosol-generating material is in granular or filamentous form. Note that this is merely an example of the form of the aerosol-generating material; in practice, it is not limited to the above forms, and any aerosol-generating medium capable of generating aerosols can be applied.

[0023] The overall length of the aerosol generation product of the present invention may be 30 to 80 mm. Among them, the range of the tight section is 2 to 10 mm, preferably 5 mm. Also, the length of the aerosol generation substrate section 2 is 8 to 25 mm, preferably 12 mm. Also, the length of the gas path section 3 is 10 to 20 mm, preferably 15 mm. Also, the length of the filter section 4 is 8 to 15 mm, preferably 10 mm.

Advantages of the Invention

[0024] Compared with the prior art, the present invention has the following beneficial effects.

[0025] 1. In the present invention, a tight section 1 is provided at one end of the aerosol generation substrate section 2 that is separated from the filter section 4, and the axial air permeability of the tight section 1 is made smaller than the axial air permeability of the aerosol generation substrate section 2, so that it is possible to reduce and prevent the situation where air enters the aerosol generation substrate section 2 via the tight section 1. As a result, it is possible to prevent the situation where cold air enters the aerosol generation substrate section from the end face of the aerosol generation substrate section, causing the slightly atomized aerosol in the aerosol generation substrate section to come into contact with the cold air and condense, and the formed liquid to flow out from the end face of the aerosol generation substrate section.

[0026] 2. In the prior art, gas passes through the end of the aerosol generation substrate section during the inhalation process. As a result, the aerosol generation substrate section is in a negative pressure state during the inhalation process, so that at the moment when inhalation stops, there is a problem that the aerosol that has not been inhaled flows back from the filter section to the aerosol generation substrate section.

[0027] However, by adding a tight section in front of the aerosol generation substrate section, it becomes almost impossible for outside air to pass through the tight section and replenish the aerosol substrate section during the user's inhalation process. Therefore, the negative pressure in the aerosol substrate section does not increase. As a result, when inhalation is stopped, it is possible to prevent the situation where the aerosol flows back into the aerosol substrate section and flows out from the end face of the aerosol generation substrate section. Thus, furthermore, the problem that the condensate of the aerosol flows out from the end face of the aerosol generation substrate section and stains the device is solved.

[0028] 3. In a preferred embodiment, the tight section 1 is selected from non-aerosol generating materials such as, but not limited to, carbon fiber materials, metal films, ceramics or polymer materials. Alternatively, the tight section 1 is selected from aerosol generating materials. Also, the density of the tight section 1 is greater than the density of the aerosol generation substrate section 2. Therefore, the selection range of materials is wide. In addition, when the tight section 1 is an aerosol generating material, the tight section 1 can be integrally formed with the aerosol generation substrate section 2 during the manufacturing process of the aerosol generation substrate, and a high-density aerosol generation substrate section can be formed as the tight section 1 in the compression process, so the manufacturing is easy.

[0029] 4. In a preferred embodiment, the side wall of the gas path section 3 further has a side flow hole 32 penetrating the side wall. By providing the side flow hole, the inhalation of the aerosol becomes easier and the suction resistance during inhalation becomes smaller.

[0030] 5. In a preferred embodiment, the axial position of the side flow hole 32 is close to one end of the aerosol generation substrate section 2 and is separated from one end of the filter section 4. The air drawn in from the side flow hole has an extraction effect on the aerosol generated by the aerosol generation substrate section 2.

[0031] 6. In a preferred embodiment, the gas path section 3 includes a first gas path section 33 adjacent to the aerosol-generating substrate section 2 and a second gas path section 34 adjacent to the filter section 4. The cross-sectional area of ​​the airflow path 31 in the first gas path section 33 is less than or equal to the cross-sectional area of ​​the airflow path 31 in the second gas path section 34, or greater than the cross-sectional area of ​​the airflow path 31 in the second gas path section 34. If the gas path section 3 is hollow, it has side walls and a hollow chamber. The hollow chamber is an airflow path 31 that penetrates the gas path section 3 axially. The inner diameter of the hollow chamber body in the first gas path section 33 is less than or equal to the inner diameter of the hollow chamber body in the second gas path section 34, or greater than the inner diameter of the hollow chamber body in the second gas path section 34.

[0032] When the inner diameter of the hollow chamber in the first gas pathway section 33 is larger than the inner diameter of the hollow chamber in the second gas pathway section 34, the amount of air drawn into the first gas pathway section 33 increases. Therefore, the extraction effect on aerosols improves, and the amount of aerosols increases.

[0033] On the other hand, if the inner diameter of the hollow chamber in the first gas pathway section 33 is smaller than the inner diameter of the hollow chamber in the second gas pathway section 34, the second gas pathway section 34 can collect more aerosols, resulting in a better condensation effect on the aerosols. In addition, the cooling effect on the aerosols is improved, making them more suitable for inhalation. [Brief explanation of the drawing]

[0034] [Figure 1] Figure 1 is a schematic diagram of the aerosol-generating product having a tightly packed section in Example 1. [Figure 2] Figure 2 is a schematic diagram of the aerosol-generating product having a tightly packed section in Example 2. [Figure 3] Figure 3 is a schematic diagram of the aerosol-generating product having a tightly packed section in Example 3. [Figure 4] Figure 4 is a schematic diagram of the aerosol-generating product having a tightly packed section in Example 4. [Modes for carrying out the invention]

[0035] The present invention will be described in more detail below, combining examples.

[0036] Those skilled in the art will understand that the following examples are merely illustrative of the present invention and should not be considered to limit its scope. Where specific technical details or conditions are not specified in the examples, the examples should be carried out in accordance with the technical details or conditions described in the relevant art literature or in accordance with the product description. Furthermore, where the manufacturer of the materials or equipment used is not specified, they are all standard products available for purchase.

[0037] Unless otherwise specified, those skilled in the art will understand that the singular forms “1,” “one,” “the said,” and “the said” used herein may also include plural forms. Furthermore, it should be understood that the expression “including” used in the specification of the present invention means the presence of the described features, integers, steps, operations, members and / or assemblies, but does not exclude the presence or addition of one or more other features, integers, steps, operations, members, assemblies and / or combinations thereof. Furthermore, it should be understood that when it is stated that a member is “connected” to another member, it may be directly connected to the other member, or there may be an intervening member. In addition, “connected” as used herein may include wireless connections.

[0038] In the description of this invention, unless otherwise specified, "multiple" means two or more. Furthermore, the directional or state relationships indicated by terms such as "inside," "up," and "down" are directional or state relationships based on the illustrations and are merely for the convenience and simplification of the description of this invention. They do not explicitly or implicitly suggest that the device or component in question has a specific direction or must be configured and operated in a specific direction. Therefore, they should not be interpreted as limiting the present invention.

[0039] In describing the present invention, unless otherwise explicitly defined and limited, the terms “attached,” “connected,” and “provided” should be interpreted broadly. For example, a connection may be fixed, detachable, or integral. It may also be mechanical or electrical. It may also be a direct connection or an indirect connection via an intermediate medium. Those skilled in the art will understand the specific meaning of these terms in the present invention depending on the specific circumstances.

[0040] Unless otherwise defined, a person skilled in the art will understand that all terms used herein, including technical and scientific terms, have the same meaning as those generally interpreted by a person skilled in the art. Furthermore, it should be understood that terms defined in general dictionaries, etc., have the same meaning as they do in the context of prior art, and, unless otherwise defined herein, should not be interpreted in an idealized or overly formal sense. [Examples]

[0041] In this embodiment, the total length of the aerosol-generating product may be 42 mm. Of this, the tightly packed section is 5 mm, the length of the aerosol-generating substrate section 2 is 12 mm, the length of the gas pathway section 3 is 15 mm, and the length of the filter section 4 is 10 mm.

[0042] As shown in Figure 1, an aerosol-generating product having a tightly packed section includes a tightly packed section 1, an aerosol-generating substrate section 2, a gas pathway section 3, and a filter section 4.

[0043] The gas pathway section 3 is located between the aerosol-generating substrate section 2 and the filter section 4.

[0044] The tightly packed section 1 is located at one end of the aerosol-generating substrate section 2 that is separated from the filter section 4.

[0045] The gas path section 3 has an airflow path 31 that penetrates the gas path section 3 in the axial direction.

[0046] The axial air permeability of the tightly packed section 1 is less than the axial air permeability of the aerosol-generating substrate section 2.

[0047] The aforementioned tightly packed section 1 is selected from a non-aerosol-generating material selected from carbon fiber materials.

[0048] The gas path section 3 is hollow and has side walls and a hollow chamber. The hollow chamber is an airflow path 31 that penetrates the gas path section 3 in the axial direction.

[0049] The side wall of the gas path section 3 is further provided with a side flow hole 32 that penetrates the side wall.

[0050] The axial position of the side flow holes 32 is close to one end of the aerosol-generating substrate section 2 and spaced away from one end of the filter section 4.

[0051] The number of side flow holes 32 is six.

[0052] The gas path section 3 is cylindrical in shape and made of acetate fiber material. [Examples]

[0053] As shown in Figure 2, the structure of the aerosol-generating product having a tightly packed section is similar to that of Example 1, but differs in the following respects. Specifically, the gas pathway section 3 includes a first gas pathway section 33 adjacent to the aerosol-generating substrate section 2 and a second gas pathway section 34 adjacent to the filter section 4. The first gas pathway section 33 and the second gas pathway section 34 are two separable sections.

[0054] The cross-sectional area of ​​the airflow path 31 in the first gas path section 33 is smaller than the cross-sectional area of ​​the airflow path 31 in the second gas path section 34. If the gas path section 3 is hollow, it has side walls and a hollow chamber. The hollow chamber is an airflow path 31 that penetrates the gas path section 3 in the axial direction. The inner diameter of the hollow chamber body in the first gas path section 33 is smaller than the inner diameter of the hollow chamber body in the second gas path section 34. In this case, the connection point may be a tapered slope.

[0055] When the inner diameter of the hollow chamber in the first gas pathway section 33 is smaller than the inner diameter of the hollow chamber in the second gas pathway section 34, the second gas pathway section 34 can collect more aerosols, resulting in a better condensation effect on the aerosols. In addition, the cooling effect on the aerosols is improved, making it more suitable for inhalation. [Examples]

[0056] As shown in Figure 3, the structure of the aerosol-generating product having a tightly packed section is similar to that of Example 1, but differs in the following respects. Specifically, the gas pathway section 3 includes a first gas pathway section 33 adjacent to the aerosol-generating substrate section 2 and a second gas pathway section 34 adjacent to the filter section 4. The first gas pathway section 33 and the second gas pathway section 34 are two separable sections.

[0057] The cross-sectional area of ​​the airflow path 31 in the first gas path section 33 is larger than the cross-sectional area of ​​the airflow path 31 in the second gas path section 34. If the gas path section 3 is hollow, it has side walls and a hollow chamber. The hollow chamber is an airflow path 31 that penetrates the gas path section 3 in the axial direction. The inner diameter of the hollow chamber body in the first gas path section 33 is larger than the inner diameter of the hollow chamber body in the second gas path section 34. In this case, the connection point between them may be a tapered slope.

[0058] When the inner diameter of the hollow chamber in the first gas pathway section 33 is larger than the inner diameter of the hollow chamber in the second gas pathway section 34, the amount of air drawn into the first gas pathway section 33 increases. Therefore, the extraction effect on aerosols improves, and the amount of aerosols increases. [Examples]

[0059] As shown in Figure 4, the structure of the aerosol-generating product having a tightly packed section is similar to that of Example 1, but differs in the following respects. Specifically, the tightly packed section 1 is selected from the aerosol-generating material. Furthermore, the density of the tightly packed section 1 is greater than the density of the aerosol-generating substrate section 2. In other words, in this case, the material of the tightly packed section 1 and the material of the aerosol-generating substrate section 2 are the same, both being aerosol-generating materials, but the tightness densities at both ends are completely different, with the density of the tightly packed section 1 being greater than the density of the aerosol-generating substrate section 2. Also, the axial air permeability of the tightly packed section 1 is less than the axial air permeability of the aerosol-generating substrate section 2.

[0060] The tightly packed section 1 is formed integrally with the aerosol-generating substrate section 2 during the manufacturing process of the aerosol-generating substrate, and since the high-density aerosol-generating substrate section is formed as the tightly packed section 1 during the compression process, the manufacturing process is easy. [Explanation of symbols]

[0061] 1. Closely connected section 2. Aerosol-generating substrate section 3 Gas route section 4 Filter intervals 31 Airflow paths 32 Side flow hole 33. First gas route section 34 Second gas route section

Claims

1. It includes a tightly packed section (1), an aerosol-generating substrate section (2), a gas pathway section (3), and a filter section (4), The gas pathway section (3) is located between the aerosol-generating substrate section (2) and the filter section (4). The tightly packed section (1) is located at one end of the aerosol-generating substrate section (2) that is separated from the filter section (4). The gas path section (3) has an airflow path (31) that penetrates the gas path section (3) in the axial direction. The axial air permeability of the tightly packed section (1) is less than the axial air permeability of the aerosol-generating substrate section (2). The gas path section (3) is hollow and has side walls and a hollow chamber, and the hollow chamber is an airflow path (31) that penetrates the gas path section (3) in the axial direction. The gas path section (3) includes a first gas path section (33) adjacent to the aerosol-generating substrate section (2) and a second gas path section (34) adjacent to the filter section (4). The cross-sectional area of ​​the airflow path (31) in the first gas path section (33) is smaller than the cross-sectional area of ​​the airflow path (31) in the second gas path section (34). The connection point between the first gas path section (33) and the second gas path section (34) has a tapered slope. An aerosol generating product having a tight section, characterized in that the side wall of the first gas path section (33) is further provided with a side flow hole (32) that penetrates the side wall.

2. The aerosol generating product having a tightly packed section (1) according to claim 1, characterized in that the axial air permeability of the tightly packed section (1) is 0.

3. The aerosol-generating product having a tightly packed section (1) is characterized in that the tightly packed section (1) is selected from a non-aerosol-generating material selected from carbon fiber material, metal film, ceramics, or polymer material, as described in claim 1.

4. The aerosol-generating product having a tightly packed section according to claim 1, characterized in that the material of the tightly packed section (1) and the aerosol-generating substrate section (2) are the same, both selected from aerosol-generating materials, and the bulk density of the tightly packed section (1) is greater than the bulk density of the aerosol-generating substrate section (2).

5. The aerosol generating product having a tightly packed section according to claim 1, characterized in that the axial position of the side flow holes (32) is close to one end of the aerosol generating substrate section (2) and spaced apart from one end of the filter section (4).

6. The aerosol generating product having a tightly packed section according to claim 1, characterized in that the gas path section (3) is cylindrical in shape.

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