Aerosol generating product

Abstract

The aerosol generating product comprises a wrapping layer and an aerosol generating section, a supporting section and a filtering section which are located in the wrapping layer and sequentially arranged in the axial direction, the supporting section is in a hollow pipe shape, the filtering section comprises a filter element and an air layer located between the filter element and the wrapping layer, and the air layer comprises a plurality of groove channels extending in the axial direction; the supporting section is provided with a first end face connected with the filtering section, the air layer is provided with a second end face connected with the supporting section, the radial thickness of the first end face is larger than that of the second end face in the radial direction of the aerosol generating product, and the projection of the second end face on the first end face is located in the outline range of the first end face. The temperature of the aerosol can be reduced, the problem that the side wall of the aerosol generating product scalds the mouth is solved, and the smoking experience of a user is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of heat-not-burn cigarettes, and in particular to an aerosol generating product. Background Art

[0002] As consumers pay more attention to health issues and demand for personalized experience of cigarette products, the tobacco industry continues to respond to the upgrading of consumer demand and develop various smoking products with reduced tar and reduced 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] Heated cigarettes generate aerosols by heating the aerosol-generating matrix of aerosol-generating products. The main components of the aerosol smoke of heated cigarettes include smoke-generating agents, nicotine, moisture and flavor components, which are formed by evaporation and condensation under heat. Its effective ingredients and smoke-maintaining ability are relatively weaker than those of traditional cigarettes. To this end, it is necessary to reduce the filter efficiency of the smoke, which is reflected in the overall design of the cigarette as a relatively shorter length, and in the structural design of the cigarette as a larger proportion of empty tubes. However, the above cigarette design will cause the temperature of the aerosol to be too high, resulting in problems such as the side wall burning the mouth, affecting the user experience. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that the side wall surface of an aerosol generating product is easy to burn the mouth. The present invention provides an aerosol generating product, which can improve the problem that the side wall surface of the aerosol generating product is easy to burn the mouth and improve the user's inhalation experience.

[0005] To solve the above technical problems, an embodiment of the present invention provides an aerosol generating product, comprising a wrapping layer and an aerosol generating section, a supporting section and a filtering section arranged in sequence along the axial direction in the wrapping layer, wherein the supporting section is a hollow tube, the filtering section comprises a filter element and an air layer located between the filter element and the wrapping layer, the air layer comprises a plurality of groove channels extending along the axial direction, the supporting section comprises a first end face connected to the filtering section, the air layer comprises a second end face connected to the supporting section, and in the radial direction of the aerosol generating product, the radial thickness of the first end face is greater than the radial thickness of the second end face, and the projection of the second end face on the first end face is located within the contour range of the first end face.

[0006] According to another specific embodiment of the present invention, the radial thickness of the first end surface is at least 1.1 times greater than the radial thickness of the second end surface.

[0007] According to another specific embodiment of the present invention, the radial thickness of the second end surface is 0.3 mm-1.5 mm.

[0008] According to another specific embodiment of the present invention, the ratio of the radial thickness of the second end surface to the width of the groove channel at the maximum width is in the range of 1-2.

[0009] According to another specific embodiment of the present invention, the air layer is rolled from a corrugated film material, and the basis weight of the film material is 60g / m 2 -150g / m 2 .

[0010] According to another specific embodiment of the present invention, the cross-sectional shape of the groove channel includes one or more of an arc shape, a V shape, a U shape and a trapezoid shape.

[0011] According to another specific embodiment of the present invention, a plurality of ventilation holes are provided on the tube wall of the supporting section.

[0012] According to another specific embodiment of the present invention, the plurality of ventilation holes are evenly arranged along the circumference of the support segment.

[0013] According to another specific embodiment of the present invention, the diameter of the ventilation hole is 0.15 mm-0.60 mm, and / or the total area of ​​the plurality of ventilation holes is less than or equal to 2 mm 2 .

[0014] According to another specific embodiment of the present invention, the filter element is made of acetate fiber.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The present application sets an air layer with multiple groove channels between the filter element and the wrapping layer. The air layer serves as a lateral heat insulation layer, which can reduce the radial transfer of heat, thereby reducing the temperature of the outer wall of the aerosol generating product and improving the problem of the side wall of the aerosol generating product burning the mouth. In addition, the present application sets the radial thickness of the second end face of the air layer to be smaller than the radial thickness of the first end face of the support segment, and makes the projection of the second end face on the first end face within the contour range of the first end face, thereby preventing the aerosol flowing out of the support segment from flowing sideways from the air layer, thereby ensuring that the aerosol flowing out of the support segment can all pass through the filter element. The aerosol can reduce the temperature of the aerosol by passing through the filter element, thereby further reducing the temperature of the outer wall of the aerosol generating product and improving the user's inhalation experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 An axial cross-sectional view of an aerosol generating article provided by one embodiment of the present invention is shown;

[0018] Figure 2 A radial cross-sectional view of a filter segment provided by an embodiment of the present invention is shown;

[0019] Figure 3A cross-sectional view of an aerosol-generating article sample 1 is shown;

[0020] Figure 4 A cross-sectional view of an aerosol-generating article sample 2 is shown;

[0021] Figure 5 A cross-sectional view of an aerosol-generating article sample 4 is shown. DETAILED DESCRIPTION

[0022] The following specific embodiments illustrate the implementation of the present invention, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Although the description of the present invention will be introduced in conjunction with the preferred embodiment, this does not mean that the features of this invention are limited to this implementation. On the contrary, the purpose of introducing the invention in conjunction with the implementation is to cover other options or modifications that may extend based on the claims of the present invention. In order to provide a deep understanding of the present invention, the following description will include many specific details. The present invention can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the present invention, some specific details will be omitted in the description. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0023] It should be noted that in this specification, similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0024] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the inventive product is usually placed when used. They 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 orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0025] The terms “first”, “second”, etc. are only used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0026] In the description of this embodiment, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connected", and "connected" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this embodiment can be understood according to specific circumstances.

[0027] In order to make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0028] like Figure 1 and Figure 2 As shown, Figure 1 An axial cross-sectional view of an aerosol generating article provided by one embodiment of the present invention, Figure 2 A radial cross-sectional view of a filter segment 3 provided in an embodiment of the present invention. In this embodiment, the aerosol generating product includes a wrapping layer and an aerosol generating segment 1, a supporting segment 2 and a filter segment 3 which are sequentially arranged in the axial direction in the wrapping layer. The supporting segment 2 is a hollow tube. The filter segment 3 includes a filter element 31 and an air layer 32 between the filter element 31 and the wrapping layer. The air layer 32 includes a plurality of groove channels 33 extending in the axial direction. The supporting segment 2 has a first end face connected to the filter segment 3. The air layer 32 has a second end face connected to the supporting segment 2. In the radial direction of the aerosol generating product, the radial thickness of the first end face (e.g., Figure 1 The dimension Dc shown in FIG. 1 is greater than the radial thickness of the second end surface (as shown in FIG. Figure 1 Size D 32 As shown), and the projection of the second end face on the first end face is located within the contour range of the first end face.

[0029] By adopting the above technical solution, the present application sets an air layer 32 with multiple groove channels 33 between the filter element 31 and the wrapping layer, and can use the air layer 32 as a lateral heat insulation layer to reduce the radial transfer of heat, thereby reducing the temperature of the outer wall of the aerosol generating product and improving the problem of the side wall of the aerosol generating product burning the mouth. In addition, the present application sets the radial thickness of the second end face of the air layer 32 to be smaller than the radial thickness of the first end face of the support section 2, and makes the projection of the second end face on the first end face within the contour range of the first end face, so as to avoid the aerosol flowing out of the support section 2 from the side flow of the air layer 32, thereby ensuring that the aerosol flowing out of the support section 2 can all pass through the filter element 31. The aerosol passing through the filter element 31 can reduce the temperature of the outlet aerosol, thereby further reducing the temperature of the outer wall of the aerosol generating product and improving the user's inhalation experience.

[0030] Specifically, the wrapping layer is a forming paper of the heat-not-burn aerosol-generating product, and the wrapping layer is a paper layer.

[0031] The aerosol generating section 1 is used to generate aerosol during use, and its filling material includes tobacco materials, smoke generating agents, flavors and fragrances, etc.

[0032] According to the flow direction of the aerosol, the generated aerosol passes through the support section 2 and the filter section 3 in sequence. The main function of the support section 2 is to make the aerosol generating product have a certain strength to avoid structural deformation caused by external force holding, the aerosol generating product falling, etc., and at the same time have a certain degree of cooling effect on the generated aerosol. The support section 2 is a hollow tube. Optionally, the support section 2 can be composed of a single section or multiple sections. When the support section 2 is composed of multiple sections, the radial thickness of each section can be set to be the same or different, and can be set according to actual usage.

[0033] The filter section 3 is divided into an air layer 32 and a solid filter element 31 from the outside to the inside of the circumference. By setting a solid filter element structure, on the one hand, harmful substances in the aerosol can be filtered out to a certain extent, reducing its harm to consumers, and at the same time, after intercepting part of the aerosol, the temperature of the aerosol when entering the consumer's mouth can be further reduced, thereby improving the comfort of inhalation.

[0034] In this embodiment, in order to prevent the aerosol flowing out of the support segment 2 from flowing sideways through the air layer 32, the radial thickness of the first end surface of the support segment 2 is greater than the radial thickness of the second end surface of the air layer 32, that is, Dc>D 32 , where Dc represents the radial thickness of the first end face (in annular shape) of the support segment 2 (i.e., the wall thickness of the ring body of the first end face), and D 32 The radial thickness of the second end face (in annular shape) of the air layer 32 (i.e., the thickness of the ring wall of the second end face) is represented, and the projection of the second end face on the first end face is located within the contour range of the first end face, thereby ensuring that the aerosol passes through the solid filter element 31. The air layer 32 serves as a lateral heat insulation layer to reduce the radial transfer of heat, thereby reducing the side wall temperature of the external aerosol generating product, improving the problem of the side wall of the aerosol generating product being hot to the mouth, and improving the user's smoking experience.

[0035] Furthermore, to avoid radial deviation caused by process deviation, the radial thickness of the first end surface is at least 1.1 times greater than the radial thickness of the second end surface. That is, Dc>1.1D 32 .

[0036] Furthermore, the radial thickness D of the second end surface 32 It is 0.3mm-1.5mm.

[0037] The air layer 32 has a certain thickness in the radial direction. If the radial thickness of the second end face is too large, the cross-sectional area of ​​the filter element 31 will be reduced, affecting the outlet aerosol temperature; if the radial thickness is too small, the air layer 32 will not be able to play the role of heat insulation and cooling. Preferably, the radial thickness D of the second end face is 32 It is 0.5mm-1.2mm.

[0038] Furthermore, the radial thickness of the second end surface is equal to the width of the groove channel 33 at the maximum width (eg Figure 2 Size D w The ratio of the ratio is in the range of 1-2.

[0039] This technical solution can maintain the shape of the filter segment 3 stable and prevent it from being deformed due to external force or falling to the ground. If the width of the groove channel 33 is too large, the air layer 32 will be insufficiently strong and unable to maintain the shape of the filter segment 3 stable under a certain lateral external force; if the width of the groove channel 33 is too small, the air layer 32 will be insufficiently strong in the axial direction of the aerosol generating product, and the material consumption will be large and wasteful. Preferably, the ratio of the radial thickness of the second end face of the air layer 32 to the width of the groove channel 33 at the maximum width is in the range of 1.3-1.8.

[0040] Furthermore, if Figure 3 As shown, in this embodiment, the air layer 32 is formed by rolling a corrugated film material, and the basis weight of the film material is 60g / m 2 -150g / m 2 .

[0041] Specifically, the wavy film material is rolled into a cylindrical shape and arranged between the filter element 31 and the outer wrapping layer, so as to form a plurality of groove channels 33 between the filter element 31 and the wrapping layer. With the above technical solution, the film material used to make the air layer 32 has a certain quantity, which can make the film material have a certain strength to prevent deformation under the action of external force, and at the same time maintain a certain processability, such as forming it into a circle.

[0042] Optionally, the basis weight of the film material is 100g / m 2 -120g / m 2 .

[0043] In one embodiment of the present invention, the film material is corrugated paper.

[0044] Furthermore, if Figure 2 As shown, the cross-sectional shape of the groove channel 33 includes one or more of an arc shape, a V shape, a U shape and a trapezoid shape.

[0045] Furthermore, a plurality of ventilation holes 21 are provided on the tube wall of the support section 2 .

[0046] By adopting this technical solution, by arranging a plurality of ventilation holes 21 on the tube wall of the support section 2, external air with a lower temperature can be introduced from the support section 2 during the inhalation process, thereby further reducing the aerosol temperature at the outlet of the filter section 3 on the basis of improving the outlet aerosol release amount, thereby further improving the inhalation experience.

[0047] In this embodiment, the support section 2 is a hollow tube. To ensure smooth entry of external gas, a plurality of ventilation holes 21 are provided on the tube wall of the support section 2. During inhalation, the support section 2 forms negative pressure with the aerosol generating section 1 and the outside of the ventilation holes 21, respectively. The aerosol generated by the aerosol generating section 1 and the external air flowing in from the ventilation holes 21 converge in the support section 2. The external air flowing into the support section 2 from the ventilation holes 21, on the one hand, impacts the aerosol in the support section 2, forms gas heat exchange, and reduces the temperature of the aerosol; on the other hand, the air flowing in from the outside impacts the aerosol from the circumference, which helps the aerosol converge in the center of the cavity, reduces the deposition of the particulate matter in the aerosol in the support section 2, and thus reduces the interception of the effective components of the aerosol by the support section 2.

[0048] Optionally, the plurality of ventilation holes 21 are evenly arranged along the circumference of the support segment 2 .

[0049] The use of this technical solution makes aerosol heat exchange more uniform and sufficient.

[0050] Furthermore, the diameter of the ventilation hole 21 is 0.15 mm-0.60 mm, and / or the total area of ​​the plurality of ventilation holes 21 is less than or equal to 2 mm 2 .

[0051] If the total area of ​​the ventilation holes 21 is too large, the amount of air flowing in from the outside will be too large, diluting the aerosol, thereby affecting the release of the active ingredients.

[0052] Furthermore, the filter element 31 is made of acetate fiber.

[0053] With this technical solution, the filter element 31 is used to filter large particles and harmful substances in the aerosol, thereby reducing the harm to the inhaler and further cooling the aerosol.

[0054] The features and performance of the present invention are further described in detail below in conjunction with specific embodiments.

[0055] In order to facilitate the comparison between samples, all samples and control samples in the following embodiments are provided to include a wrapping layer and an aerosol generating section 1, a supporting section 2 and a filtering section 3 which are sequentially connected along the axial direction and wrapped by the wrapping layer, wherein the aerosol generating section 1 has a length of 12 mm and a filler is rolled tobacco sheet shreds; the supporting section 2 is a hollow tube with a length of 25 mm, and the radial thickness of the tube wall of the supporting section 2 is 1.0 mm; the filter element 31 of the filtering section 3 is a solid core made of acetate fiber and has a length of 8 mm.

[0056] Example

[0057] The structure of the sample 1 of the aerosol generating article of the embodiment is as follows: Figure 3As shown, the filter section 3 of sample 1 includes a filter element 31 and an air layer 32 located between the filter element 31 and the wrapping layer, and the air layer 32 includes a plurality of groove channels 33 extending in the axial direction. The radial thickness D of the air layer 32 is 32 The cross-sectional shape of the groove channel 33 is "V-shaped", the ratio of the radial thickness of the air layer 32 to the width of the groove channel 33 at the maximum width is 1.6, and the air layer 32 uses corrugated paper, and the basis weight of the corrugated paper is 120g / m 2 .

[0058] The structure of the sample 2 of the aerosol generating article of the embodiment is as follows: Figure 4 As shown, a ventilation hole 21 is provided at the axial middle position of the support section 2 of the sample 2. The diameter of a single ventilation hole 21 is 0.5 mm, and there are 5 holes evenly distributed on the circumference.

[0059] The structure of the sample 3 of the aerosol generating article of the embodiment is as follows: Figure 1 As shown, the filter section 3 of the sample 3 includes a filter element 31 and an air layer 32 located between the filter element 31 and the wrapping layer. A ventilation hole 21 is provided in the axial middle position of the support section 2. The diameter of a single ventilation hole 21 is 0.5 mm, and the number of holes is 5, which are evenly distributed on the circumference. The air layer 32 includes a plurality of groove channels 33 extending in the axial direction. The radial thickness D of the air layer 32 is 32 The cross-sectional shape of the groove channel 33 is "V-shaped", the ratio of the radial thickness of the air layer 32 to the width of the groove channel 33 at the maximum width is 1.6, and the air layer 32 uses corrugated paper, and the basis weight of the corrugated paper is 120g / m 2 .

[0060] Control

[0061] The structure of the control aerosol-generating article sample 4 is as follows Figure 5 As shown, the filter section 3 includes a solid filter element 31 made of acetate fiber.

[0062] Suction test and effect comparison

[0063] The above-mentioned aerosol generating products are used in conjunction with heating devices. When comparing the effects of various aerosol generating product samples, in order to ensure the consistency of the smoking conditions, a smoking machine is used and tested under certain parameter conditions. One of the smoking methods is listed below, specifically: the above-mentioned aerosol generating products are placed in the same heating device for smoking. The specific smoking machine parameters are: smoking capacity 55.0mL, smoking frequency 30.0s, single-puff duration 2.0s, the smoking curve is a bell-shaped curve, and 8 puffs are taken for each cigarette. Use a 44mm Cambridge filter to capture the outlet aerosol of each sample during the smoking process, and calculate the mass difference of the Cambridge filter before and after the aerosol is captured, which is used as the aerosol capture result of a single sample. Furthermore, the Cambridge filter that captures the aerosol is extracted, and the nicotine content is detected by gas chromatography, which is used as the nicotine release in the aerosol of a single sample. The high aerosol capture and nicotine release amounts indicate that the active ingredients in the material can be effectively released and that the filtration has little effect on aerosol retention.

[0064] In order to compare the temperature perception of consumers when inhaling aerosol-generating products, the temperature is measured using the thermocouple method. When the aerosol-generating product is used in conjunction with a smoking device, the thermocouple is placed 1mm (+1mm, along the airflow direction) away from the outlet of the filter section 3 to detect the aerosol outlet temperature, and the highest temperature at this position during the inhalation process is recorded as T1; the thermocouple is placed on the outer surface of the aerosol-generating product, 9mm forward (-9mm, opposite to the airflow direction) from the outlet of the filter section 3 to detect the outer wall temperature during the use of the aerosol-generating product, and the highest temperature at this position during the inhalation process is recorded as T2. The low temperature result indicates that the filter section 3 design has a good cooling effect, and consumers have a better user experience.

[0065] Through the above test method, the same heating device is used, the maximum heating temperature of the heating device is 300℃, the preheating time is 15s, and the heating duration is 365s. The effects of several samples are compared, and the results are shown in the following table:

[0066] Table 1 Comparison of test results of samples 1-3 of the embodiment and sample 4 of the control sample

[0067]

[0068] According to the above table, the aerosol generating product provided by the present invention can effectively reduce the outlet aerosol temperature during use, especially the side wall temperature, and improve the problem of burning the mouth and lips caused by excessive temperature. At the same time, the present invention is also conducive to improving the aerosol capture amount and nicotine release amount. Comprehensively considering the temperature and release test results, the present invention further improves the consumer experience of the aerosol generating product.

[0069] Although the present invention has been illustrated and described with reference to certain preferred embodiments of the present invention, it should be understood by those skilled in the art that the above is a further detailed description of the present invention in conjunction with specific embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. Those skilled in the art may make various changes in form and details, including making several simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. An aerosol generating product, characterized in that The invention comprises a wrapping layer and an aerosol generating section (1), a supporting section (2) and a filtering section (3) which are arranged in sequence along the axial direction in the wrapping layer. The supporting section (2) is hollow and tubular. The filtering section (3) comprises a filter element (31) and an air layer (32) between the filter element (31) and the wrapping layer. The air layer (32) comprises a plurality of groove channels (33) extending along the axial direction. The supporting section (2) has a first end face connected to the filtering section (3). The air layer (32) has a second end face connected to the supporting section (2). In the radial direction of the aerosol generating product, the radial thickness of the first end face is greater than the radial thickness of the second end face. The projection of the second end face on the first end face is located within the contour range of the first end face.

2. The aerosol-generating article according to claim 1, wherein The radial thickness of the first end surface is at least 1.1 times greater than the radial thickness of the second end surface.

3. The aerosol-generating article according to claim 1, wherein The radial thickness of the second end surface is 0.3 mm-1.5 mm.

4. The aerosol-generating article of claim 1, wherein: The ratio of the radial thickness of the second end surface to the width of the groove channel (33) at the maximum width is in the range of 1-2.

5. The aerosol-generating article of claim 1, wherein: The air layer (32) is formed by rolling a corrugated film material, the basis weight of which is 60 g / m 2 -150g / m 2 .

6. The aerosol-generating article of claim 1, wherein: The cross-sectional shape of the groove channel (33) includes one or more of an arc shape, a V shape, a U shape and a trapezoid shape.

7. The aerosol-generating article of claim 1, wherein: A plurality of ventilation holes (21) are provided on the tube wall of the support section (2).

8. An aerosol-generating article according to claim 7, characterized in that The plurality of ventilation holes (21) are evenly arranged along the circumference of the support section (2).

9. An aerosol generating article according to claim 7 or 8, characterized in that The diameter of the ventilation hole (21) is 0.15 mm to 0.60 mm, and / or the total area of ​​the plurality of ventilation holes (21) is less than or equal to 2 mm 2 .

10. The aerosol-generating article of claim 1, wherein: The filter element (31) is made of acetate fiber.

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