Aerosol generating articles for aerosol generating devices and related manufacturing methods
The aerosol generating article with a hollow cooling section and paper packaging addresses manufacturing complexity and cost issues, ensuring efficient cooling and minimizing leakage through a simplified structure.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- JT INTERNATIONAL SA
- Filing Date
- 2024-05-02
- Publication Date
- 2026-05-07
AI Technical Summary
Aerosol generating articles for heat-not-burn devices have complex structures due to the inclusion of additional components like filters or cooling elements, leading to increased manufacturing complexity and cost, and potential aerosol leakage issues.
An aerosol generating article with a flat rectangular parallelepiped shape, featuring a completely hollow cooling section enclosed by a single sheet of paper packaging with a basis weight of more than 75 g/m² and thickness of more than 95 μm, which provides sufficient rigidity and efficient convection cooling without the need for additional support elements.
The solution simplifies manufacturing, reduces costs, minimizes aerosol leakage, and ensures effective cooling by convection, while maintaining the article's shape and reducing condensation.
Smart Images
Figure 2026514236000001_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to an aerosol generating article designed to operate with an aerosol generating device. The present invention also relates to a method of manufacturing such an aerosol generating article.
[0002] In particular, the aerosol generating article includes an aerosol generating substrate that can form an aerosol when heated by an aerosol generating device. Thus, such types of aerosol generating devices, also known as heat-not-burn devices, are adapted to heat rather than burn to generate an aerosol for inhalation.
Background Art
[0003] (Also known as a vaporizer) The popularity and use of risk reduction or risk modification devices have been rapidly increasing in recent years as an aid to assist habitual smokers who wish to quit smoking conventional tobacco products such as cigarettes, cigars, cigarillos, and hand-rolled cigarettes. In contrast to burning tobacco in conventional tobacco products, various devices and systems are available that heat or warm vaporizable substances.
[0004] Commercially available risk reduction or risk modification devices are typically substrate heating aerosol generating devices or heat-not-burn devices. This type of device generates an aerosol or vapor by heating an aerosol substrate that is usually contained in a separate consumable article. Usually, such an aerosol generating substrate typically includes moist tobacco leaves or other suitable vaporizable materials up to a temperature in the range of 150°C to 350°C. By heating the aerosol generating substrate rather than burning or combusting it, an aerosol is released that contains the components desired by the user but does not contain the by-products resulting from burning and combustion. Further, the aerosol generated by heating tobacco or other vaporizable materials usually does not contain the burnt or bitter taste resulting from burning and combustion, which can be unpleasant to the user, and the smoke that can irritate and pollute the surroundings.
[0005] Aerosol generating articles usable in such types of aerosol generating devices can take various forms. Some may be elongated sticks or other suitable shapes, such as flat shapes. Generally, such aerosol generating articles are at least partially contained within a heating chamber of a device that includes one or more heaters for heating the aerosol generating articles.
[0006] Aerosol-generating articles generally comprise packaging that encloses together an aerosol-generating substrate and a downstream section, also called a cooling section, for cooling the aerosol. The downstream section may include a filter and / or cooling element for cooling the aerosol before it is delivered to the user. Such a filter or cooling element also functions as a support structure, thus ensuring the shape of the downstream section during use of the article. For example, if this shape deforms at least slightly to create a gap between the article and the mouthpiece, air may be drawn along this path instead of passing through the article. This results in a small amount of vapor and hot puff, which is undesirable for the user.
[0007] Therefore, filters or cooling elements constitute additional components of the article, and their insertion into the downstream portion requires an additional step during manufacturing. As a result, these additional components can give aerosol-generating articles a complex structure, making their manufacture complex and costly. [Overview of the Initiative] [Problems that the invention aims to solve]
[0008] One of the objectives of the present invention is to propose an aerosol-generating article that can be easily and inexpensively manufactured while minimizing aerosol leakage. [Means for solving the problem]
[0009] For this purpose, the present invention relates to an aerosol generating article for delivering an aerosol when heated in an aerosol generating device, The present invention relates to an aerosol-generating article having a flat rectangular parallelepiped shape that extends along the article axis (X) between an inlet end and an outlet end, Aerosol generating devices are - Cooling section, - Positioned continuously with the cooling portion along the article axis (X), and comprising a substrate portion including an aerosol generating substrate, - A packaging body arranged to enclose the base material portion and the cooling portion, The cooling section is completely hollow and forms the outlet end of the aerosol-generating article. The packaging includes paper having a basis weight of more than 75 g / m2 and / or a thickness of more than 95 μm.
[0010] By possessing these characteristics, the aerosol generating article does not need to include any support in the cooling portion. In particular, the inventors have found that packaging exhibiting the above characteristics has sufficient rigidity to form a hollow cooling section of the cooling portion that can withstand external pressure, for example, while the cooling portion is inserted into a mouthpiece or when the cooling portion is used without a mouthpiece. Thus, the shape of the cooling portion can be maintained substantially the same during the operation of the aerosol generating article (insertion into the device, vaping session, removal from the device, etc.). For example, when the aerosol generating article is used with an external mouthpiece, the article can fit precisely with the mouthpiece (for example, without forming a gap between the inner surface of the mouthpiece and the outer surface of the cooling portion). Thus, aerosol leakage can be avoided or at least minimized.
[0011] Additionally, since the cooling section is completely hollow, the cooling of the aerosol is essentially achieved by convection. Therefore, the completely hollow cooling section exhibits efficient cooling characteristics. Furthermore, because the contact surface between the cooling section and the aerosol is minimized, condensation can be kept low.
[0012] It is understood that the "completely hollow cooling section" allows airflow to pass freely through the cooling section without obstruction. In particular, this means that there are no longitudinal or transverse walls inside the cooling section.
[0013] Aerosol-generating articles that do not include additional elements in the cooling section exhibit a simplified structure that can be manufactured easily and inexpensively.
[0014] Additionally, the cooling portion forming the outlet end of the aerosol-generating article can be inserted into the mouthpiece used during a vaping session without creating a gap between the inner surface of the mouthpiece and the outer surface of the cooling portion. Alternatively, the cooling portion can come into contact with the user's mouth during a vaping session. Thus, the cooling portion can be used as a mouthpiece.
[0015] In some embodiments, the paper has a basis weight in the range of 70-120 g / m², preferably 70-110 g / m², more preferably 70-105 g / m², and even more preferably 70-103 g / m². In some embodiments, the basis weight of the paper is in the range of 72-120 g / m², preferably 78-120 g / m² or 75-110 g / m², more preferably 77-105 g / m², and even more preferably 78-100 g / m². In some embodiments, the basis weight of the paper is in the range of 85-120 g / m², preferably 85-110 g / m², more preferably 85-105 g / m², and even more preferably 85-103 g / m². In some embodiments, the basis weight of the paper is included in 90-120 g / m², preferably 90-110 g / m², more preferably 90-105 g / m², and even more preferably 90-103 g / m² or 95-103 g / m². The basis weight of the paper is advantageously substantially equal to 100 g / m².
[0016] In some embodiments, the paper has a thickness of at least 90 microns, preferably at least 100 microns, advantageously 95 to 160 microns, more preferably 100 to 150 microns, even more preferably 100 to 140 microns, even more preferably 100 to 130 microns, and even more preferably 100 to 125 microns. The thickness of the paper may be advantageously substantially equal to 125 microns.
[0017] Having such thickness and / or basis weight, the packaging exhibits good aerosol barrier and heat transfer properties, while ensuring adequate mechanical resistance to wrap the cooling portion together with the aerosol-generating substrate, even if the cooling portion is completely hollow.
[0018] In some embodiments, the packaging is formed from a single sheet of paper.
[0019] In other words, the packaging according to this embodiment consists of a single sheet of paper. A single-sheet paper packaging exhibits better heat transfer properties and a better tendency to ignite than a multi-layer packaging. Furthermore, the method of assembling an article using only a single sheet of packaging is simpler, particularly due to its superior physical properties compared to multi-layer packaging. In particular, paper can be wrapped around an aerosol-generating substrate more easily than multi-layer packaging. In addition, unlike multi-layer packaging, a single-sheet packaging does not curl on one side because it can exchange moisture from both sides.
[0020] In addition, paper is recyclable, and the packaging according to the present invention can be disposed of as ordinary paper waste.
[0021] In some embodiments, the packaging is formed from a folded paper sheet. The folding may be done along a fold line extending along the article axis. The fold line defines a pair of opposing narrow walls, also called side walls, and a pair of opposing wider walls, also called wider walls.
[0022] In some embodiments, the paper has a density of at least 0.75 g / cm³.
[0023] By having these characteristics, the package can ensure an appropriate barrier against the aerosol and heat transfer characteristics similar to or improved than those of a conventional package heated to around 280°C. In particular, the inventors have discovered that the density of the paper forming the package being at least 0.75 g / cm3 ensures aerosol barrier characteristics similar to those of a multilayer package provided with a metal layer and better heat transfer characteristics.
[0024] In some embodiments, the paper has a density included in 0.75 - 1.1 g / cm3, preferably 0.75 - 1.0 g / cm3, more preferably 0.75 - 0.9 g / cm3, still more preferably 0.75 - 0.85 g / cm3. In some embodiments, the density of the paper is included in 0.76 - 1.1 g / cm3, preferably 0.76 - 1.0 g / cm3, more preferably 0.76 - 0.9 g / cm3, still more preferably 0.76 - 0.85 g / cm3. In some embodiments, the density of the paper is included in 0.77 - 1.1 g / cm3, preferably 0.77 - 1.0 g / cm3, more preferably 0.77 - 0.95 g / cm3, still more preferably 0.77 - 0.9 g / cm3.
[0025] According to some embodiments, the paper sheet substantially does not contain a filler selected from clay, titanium dioxide, talc, or gypsum. Alternatively, the paper sheet substantially does not contain a filler presenting an output product derived from minerals. These output products can be selected from clay, titanium dioxide, talc, or gypsum.
[0026] By an element being "substantially not contained", it is understood that the percentage of the dry weight of this element in the corresponding substance (e.g., the package) is less than a predetermined threshold. This predetermined threshold can be less than 2%, more preferably less than 1%, still more preferably less than 0.5%.
[0027] The absence of fillers reduces the number and volume of air voids (which can function as insulators) in the paper structure. Consequently, heat can be directly transferred from the cellulose to the aerosol-generating substrate, thereby significantly improving the efficiency of vapor generation.
[0028] According to some embodiments, the packaging does not contain a metal layer.
[0029] Preferably, the packaging also does not contain metal in the powder or film as a layer or filler in the paper. Therefore, the manufacture of the packaging can be particularly inexpensive and easy. Additionally, packaging consisting only of paper sheets can be easily wrapped around aerosol-generating substrates and cooling components for aerosol-generating articles. Finally, metal-free packaging can be recycled as ordinary paper waste.
[0030] In some embodiments, the packaging is non-porous. In particular, the porosity of the paper is less than 100 CU, preferably 0 to 80 CU. In one example, the paper has a porosity of 40 CU.
[0031] The paper sheets that form the packaging can be manufactured using calendering to increase the density of the paper.
[0032] According to some embodiments, the aerosol-generating substrate contains an aerosol-forming agent in an amount of at least 12% by weight, preferably at least 15% by weight, and most preferably 20-70% by weight, based on the dry weight of the substrate.
[0033] Suitable aerosol-forming agents include polyols (such as sorbitol, glycerol, and glycols such as propylene glycol or triethylene glycol) and non-polyols (such as monohydric alcohols, acids such as lactic acid, glycerol derivatives, triacetin, esters such as triethylene glycol diacetate and triethyl citrate, glycerin, or vegetable glycerin). In some embodiments, the aerosol-forming agent may be glycerol, propylene glycol, or a mixture of glycerol and propylene glycol.
[0034] According to some embodiments, the aerosol generating substrate further comprises tobacco particles and / or an inhalable agent, which contains at least one irritant and / or flavoring agent, and a gelling agent for gelling the aerosol generating substrate.
[0035] In some embodiments, the aerosol generating substrate further comprises a binder of a cellulose derivative (e.g., CMC), a hydroxyalkylated carbohydrate, starch, or a combination thereof.
[0036] In some embodiments, the gelling agent includes non-protein-containing polysaccharides, gellan gum, lecithin, agar, or a mixture thereof.
[0037] According to some embodiments, the cooling portion includes a cellulose-based material, an acetate or polymer material, or a combination thereof.
[0038] According to some embodiments, the packaging extends around the article axis along the entire length of the cooling portion and the substrate portion. In other words, the packaging extends along the longitudinal axis from the inlet end to the outlet end of the article, and the same and unique packaging can be used to enclose both the cooling portion and the aerosol-generating substrate. This packaging may be made from a single sheet of paper, and advantageously, no other packaging or layers are used to enclose at least partially the cooling portion and / or the aerosol-generating substrate.
[0039] According to some embodiments, the packaging separates the cooling portion and is in direct contact with the aerosol-generating substrate. This means that no additional packaging or layer is provided between the aerosol-generating substrate and the packaging made from a single sheet of paper.
[0040] According to some embodiments, the cooling portion is directly adjacent to the aerosol generating substrate. This means that there is no intermediate segment or component (e.g., a filter segment) between the aerosol generating substrate and the cooling portion.
[0041] In some embodiments, the article has a rod shape extending along the article axis. In particular, the rod may have a substantially constant cross-section having a circular, elliptical, or rectangular shape. In the case of a rectangular cross-section, the rod may have rounded or angular edges.
[0042] In a preferred embodiment, the article has a flat rectangular parallelepiped shape extending along the article axis.
[0043] It is understood that at least one of the aerosol-generating article or a part thereof (cooling portion or aerosol-generating substrate) is in a "flat rectangular parallelepiped shape" and extends between two first parallel longitudinal planes and two second parallel longitudinal planes perpendicular to the first parallel longitudinal planes, and the distance between the second parallel longitudinal planes is at least three times, preferably five times, and more preferably ten times, the distance between the first parallel longitudinal planes.
[0044] For example, in some embodiments, the aerosol-generating article may have a length of 10 to 40 mm, a width of 10 to 30 mm, a depth of 0.5 to 3 mm, and a surface area of 100 to 600 mm².
[0045] The present invention also relates to a method for producing an aerosol-generating article as defined above. The method is: - The step of forming a cooling section by wrapping the packaging around the mandrel, - The manufacturing method includes the step of removing the mandrel from the cooling section at the end of the process.
[0046] Therefore, the mandrel can be used to form the shape of the cooling section during manufacturing. For example, the cross-sectional shape of the mandrel may substantially correspond to the cross-sectional shape of the cooling section.
[0047] The manufacturing process may further include placing the aerosol-generating substrate inside the substrate portion using a mandrel.
[0048] These features allow the mandrel to be used to first position the aerosol-generating substrate and then to form a cooling section. Positioning may involve positioning the generating substrate and the mandrel adjacent to each other before forming the cooling section. For example, the aerosol-generating substrate may first be positioned on a sheet with the intention of forming a package. The mandrel may be positioned next to the aerosol-generating substrate on the sheet, aligned with the aerosol-generating substrate. The sheet is then wound around the article axis, and thus the cooling section and the mandrel can be removed. Thus, the aerosol-generating article can be manufactured in a particularly fast and inexpensive manner.
[0049] The present invention and its advantages are given as non-limiting examples and will be better understood by reading the following description, which is made with reference to the accompanying drawings. [Brief explanation of the drawing]
[0050] [Figure 1] This is a schematic diagram of an aerosol generating assembly comprising an aerosol generating device and an aerosol generating article according to the present invention. [Figure 2] Figure 1 is a perspective view of an aerosol-generating article. [Figure 3] Figure 1 is a partially disassembled perspective view of an aerosol-generating article. [Figure 4] This is a schematic diagram of the manufacturing method according to the present invention. [Modes for carrying out the invention]
[0051] Before describing the present invention, it should be understood that the present invention is not limited to the structural details disclosed in the following description. Those skilled in the art who benefit from this disclosure will see that other embodiments of the invention are possible and can be implemented or performed in various ways.
[0052] As used herein, the terms “aerosol generating device” or “device” may include a vaping device that delivers an aerosol to a user, including an aerosol for vaping, using a heating element which is described in more detail below. The device may be portable. “Portable” may mean a device used when held by a user. The device may be adapted to generate a variable amount of aerosol by operating a heating element over a variable amount of time (as opposed to a metered dose of aerosol) and may be controlled by a trigger. The trigger may be user-activated, such as a smoking button and / or an inhalation sensor. The inhalation sensor may also be sensitive to inhalation intensity and duration, enabling the delivery of a variable amount of vapor (to mimic the smoking effect of conventional combustion-type smoking articles such as cigarettes, cigars, or pipes). The device may include a temperature control unit that drives the temperature of the heating element and / or heated aerosol-generating material (aerosol precursor) to a specified target temperature and then maintains the temperature at a target temperature that enables efficient aerosol generation.
[0053] As used herein, the term “aerosol” may include a suspension of vaporizable material as one or more solid particles, droplets, or gases. Such suspension may be a gaseous phase containing air. In this specification, aerosol generally refers to / may include vapor. An aerosol may contain one or more components of vaporizable material.
[0054] Figure 1 shows an aerosol generating assembly 10 comprising an aerosol generating device 11 and an aerosol generating article 12. The aerosol generating article 12 is intended to work with the aerosol generating device 11 to generate an aerosol, as will be described in more detail below.
[0055] Referring to Figure 1, the aerosol generating device 11 comprises a device body 15 extending along the device axis Y between a closed end 16 and an open end 17. The open end 17 presents an opening into which an aerosol generating article 12 can be inserted into the device 11. The device body 15 divides the internal space of the device 11 to accommodate various elements designed to perform different functions of the device 11. This internal space may accommodate, for example, a battery for supplying power to the device 11, a control module for controlling the operation of the device 11, a heating chamber 60 for heating the aerosol generating article 12, and so on. In the example in Figure 1, only the heating chamber 60 is shown. In particular, the heating chamber 60 is designed to accommodate at least partially the aerosol generating article 12. In the example in Figure 1, the heating chamber 60 may be located, for example, adjacent to the opening formed by the open end 17 of the device body 15. The heating chamber 60 may, for example, extend along the device axis Y and have a cup shape. The heating chamber 60 may comprise a heater designed to heat at least a portion of the aerosol generating article 12. The heater includes, for example, a pair of heating plates, designed to heat opposing walls of the aerosol-generating article 12, facing each other, as will be described in more detail below. Each heating plate may include or be made of metal or ceramic. The metal is preferably stainless steel (e.g., SAE316L). According to other embodiments, the heater includes any other means or materials suitable for heating the aerosol-generating article, such as a heating blade or magnetic coil that interacts with a heat induction element in contact with the aerosol substrate.
[0056] In the example shown in Figure 2, the aerosol-generating article 12 has a flat rectangular parallelepiped shape. In other words, in this example, the aerosol-generating article 12 is a flat rectangular parallelepiped extending along the article axis X between the inlet end 18 and the outlet end 19, and having external dimensions L × W × D. In a typical example, the length L of the article 12 along the article axis X is substantially equal to 33 mm, while the width W and depth D are substantially equal to 12 mm and 1.2 mm, respectively. In another example, the values L, W, and D can be selected within, for example, a range of ±40%. The depth D of the aerosol-generating article 12 is formed by a pair of parallel walls 23A, 23B, hereafter referred to as side walls 23A, 23B, and the width W of the aerosol-generating article 12 is formed by a pair of parallel walls 24A, 24B, hereafter referred to as wider walls 24A, 24B. In the example in Figure 2, the aerosol-generating article 12 has a flat shape, so that each wider wall 24A, 24B is, for example, at least 5 times, and preferably 10 times, wider than each side wall 23A, 23B. The flat shape of the aerosol-generating article 12 is therefore defined by the ratio (greater than 5, and preferably greater than 10) between each wider wall 24A, 24B and each side wall 23A, 23B. In some embodiments, the edges between the side walls and the wider walls 23A, 23B, 24A, 24B may be rounded. In other examples, the aerosol-generating article 12 may have any other suitable shape, such as a cylindrical shape (i.e., a rod shape) with a circular, elliptical, or rectangular cross-section.
[0057] The aerosol-generating article 12 includes a base portion 25 and a cooling portion 26 arranged continuously along the article axis X, as shown in Figures 2 and 3. The base portion 25 may be slightly longer than, for example, the cooling portion 26. For example, the length L2 of the base portion 25 along the article axis X may be substantially equal to 18 mm, and the length L1 of the cooling portion 26 along the article axis X may be substantially equal to 15 mm. The base portion 25 defines the inlet end 18 of the article 12, and the cooling portion 16 defines the outlet end 19 of the article 12. The base portion 25 and the cooling portion 26 may be fixed to each other by a packaging body 31 extending around the article axis X. In this case, the packaging body 31 forms the side walls and wider walls 23A, 23B, 24A, 24B of the aerosol-generating article 12.
[0058] The base material portion 25 of the aerosol generating article 12 is designed to be received into the heating chamber 60 of the aerosol generating device 11 (for example, through an opening formed by the device body 15) such that the article axis X and the device axis Y coincide, as shown in Figure 1. Each of the wider wall portions 24A, 24B corresponding to the base material portion 25 of the article 12 is designed to be heated by the heating chamber 60 of the device 11. In particular, according to some embodiments, each of these portions is designed to be in contact with a heating plate forming a heater, as described above. In some embodiments, only one of the corresponding portions of the wider walls 24A, 24B is designed to be heated by the heater. According to some other embodiments, at least a portion of at least one of the walls 23A, 23B, 24A, 24B is designed to be heated indirectly (i.e., without contact) by the heater of the heating chamber 6, for example by convection.
[0059] The base portion 25 includes an aerosol generating base material 35 shown in Figure 3. The aerosol generating base material 35 extends along the entire length of the base portion 25 and forms a solid structure that can release aerosols when heated. This solid structure may, for example, form a substantially rectangular parallelepiped shape. In some examples, the solid structure forms aerosol channels on its surface that conduct aerosols. In some examples, the solid structure may have a corrugated shape in each cross-section, as shown in Figure 3. In this example, the corrugated shape defines a plurality of protruding regions and a plurality of valley regions. Each valley region forms an aerosol channel between its surface and the inner surface 36 of the packaging 31. Each protruding region is in direct contact with the inner surface 36 of the packaging 31. The aerosol generating base material 35 includes an aerosol-forming agent and a binder. The aerosol generating base material 35 further includes tobacco particles and / or an inhalable agent, which contains at least one irritant and / or flavoring agent and a gelling agent for gelling the aerosol generating base material.
[0060] According to different embodiments, the cooling portion 26 is designed to form a mouthpiece by itself, or to be received inside an external mouthpiece that can be attached to the device body 15. The cooling portion 26 is intended to function as a cooler that cools the vapor before the user inhales. The cooling portion 26 is hollow, and advantageously, completely hollow. In other words, the cooling portion 26 has a void that is separated only by the inner surface 36 of the packaging 31.
[0061] Preferably, the packaging 31 is formed from a single sheet of paper. This sheet then forms the inner surface 36 of the packaging 31 as described above, and its outer surface designed to be heated by the heater. The packaging 31 extends along the article axis X between the inlet end 18 and the outlet end 19. In other words, the packaging 31 extends along the entire length of the base material portion 25 and the cooling portion 26. Thus, the packaging 31 completely covers the aerosol-generating base material 35 and the cooling portion 26, while maintaining that the ends 18, 19 are not covered transversely. In particular, the packaging is tightly wrapped around the cigarette portion without adhesive. The packaging can be bonded to the cooling portion with adhesive.
[0062] According to a specific example, the packaging 31, preferably a single paper sheet forming the packaging, defines the following characteristics:
[0063] [Table 1]
[0064] These properties ensure the necessary mechanical resistance to form the hollow cooling portion 26 relative to the packaging 31.
[0065] The packaging 31 is preferably essentially non-porous. The porosity of the packaging is preferably less than 100 CU.
[0066] To manufacture the aerosol-generating article 12 according to the present invention, a sheet intended to form a packaging 31 may first be positioned on a support, as shown in part A of Figure 4. The sheet may include fold lines extending in the axial direction. Next, the aerosol-generating substrate 35 may be positioned within a portion of the packaging 31 intended to form one of the wider walls 24A, 24B of the substrate portion 25. The substrate 35 may be positioned using a mandrel 70 from the end of the packaging 31 designed to form an exit end 19, for example, as shown in part B of Figure 4. The mandrel 70 may be movable along the article axis X. Next, before removing the mandrel 70, the packaging 31 may be wrapped around the mandrel 70 to form a hollow cooling portion 26, as shown in part C of Figure 4. Thus, the mandrel 70 serves as a support for forming the hollow cooling portion 26. Finally, the mandrel may be removed from the exit end 19 of the assembled aerosol-generating article 12, as shown in part D of Figure 4.
Claims
1. an aerosol generating article (12) for delivering an aerosol when heated in an aerosol generating device (11), It extends along the article axis (X) between the inlet end (18) and the outlet end (19), and has a flat rectangular parallelepiped shape that extends along the article axis (X), The aerosol generating article (12) - Cooling section (26), - Positioned continuously with the cooling portion (26) along the article axis (X), and including the aerosol generating substrate (35), - A packaging body (31) is arranged to enclose the base material portion (25) and the cooling portion (26), Equipped with, The cooling portion (26) is completely hollow and forms the outlet end (19) of the aerosol generating article (12). The packaging (31) includes paper having a basis weight in the range of 75 g / m² to 120 g / m² and a thickness in the range of 95 μm to 160 μm. Aerosol-generating article (12).
2. The aerosol generating article (12) according to claim 1, wherein the basis weight of the paper is 85 to 110 g / m2, preferably 95 to 103 g / m2.
3. The aerosol generating article (12) according to claim 2, wherein the basis weight of the paper is substantially equal to 100 g / m2.
4. The aerosol generating article (12) according to any one of claims 1 to 3, wherein the thickness of the paper is in the range of 100 μm to 150 μm, more preferably 100 μm to 140 μm, more preferably 100 μm to 130 μm, and even more preferably 100 μm to 125 μm.
5. The aerosol generating article (12) according to claim 4, wherein the thickness of the paper is substantially equal to 125 μm.
6. The aerosol generating article (12) according to any one of claims 1 to 5, wherein the density of the paper is at least 0.75 g / cm³.
7. The aerosol generating article (12) according to any one of claims 1 to 6, wherein the packaging (31) is formed from a single sheet of paper.
8. The aerosol-generating article (12) according to any one of claims 1 to 7, wherein the packaging (31) does not contain a metal layer.
9. The aerosol generating article (12) according to any one of claims 1 to 8, wherein the aerosol generating substrate (35) contains an aerosol forming agent in an amount of at least 12% by weight, preferably at least 15% by weight, and most preferably 20 to 70% by weight, based on the dry weight of the substrate.
10. The aerosol generating article (12) according to any one of claims 1 to 9, wherein the packaging (31) extends along the entire length of the cooling portion (26) and the base material portion (25) around the article axis (X).
11. The aerosol generating article (12) according to any one of claims 1 to 10, wherein the packaging (31) separates the cooling portion (26) and is in direct contact with the aerosol generating substrate (35).
12. The aerosol generating article (12) according to any one of claims 1 to 11, wherein the cooling portion (26) is directly adjacent to the aerosol generating substrate (35).
13. The aerosol-generating article (12) according to any one of claims 1 to 12, wherein the packaging (31) is formed from a folded paper sheet made along a fold line extending along the article axis (X), and preferably the fold line defines a pair of opposing side walls (23A, 23B) and a pair of opposing, wider walls (24A, 24B).
14. - The step of forming a cooling portion (26) by wrapping the packaging around the mandrel, - The final step of the manufacturing method is to remove the mandrel from the cooling section (26), A method for producing an aerosol-generating article (12) according to any one of claims 1 to 13, including the method described above.
15. - The step of placing the aerosol generating substrate (35) inside the substrate portion (25) using the mandrel, The manufacturing method according to claim 14, further comprising: