Aerosol-generating article with converging section

Abstract

An aerosol generating article (10) for use with an aerosol generating apparatus to generate aerosols, the aerosol generating article (10) having a length extending in the x direction, a width extending in the y direction, and a thickness extending in the z direction, the aerosol generating article (10) comprising: a first planar outer surface (21); a second planar outer surface (22); one or more aerosol generating matrices; and a cavity (30) extending in the x direction between a first end and a second end of the cavity, wherein the cavity includes a converging segment (32) extending in the x direction between a first end and a second end of the converging segment (32), wherein the width of the converging segment (32) decreases along the length of the converging segment (32) from the first end to the second end, and wherein the length of the converging segment (32) is greater than the width of the converging segment (32) at the first end of the converging segment (32).

Description

Technical Field

[0001] This disclosure relates to an aerosol generating article. This disclosure also relates to an aerosol generating apparatus for use with the aerosol generating article. This disclosure further relates to an aerosol generating system comprising an aerosol generating article and an aerosol generating apparatus. Background Technology

[0002] A typical aerosol generation system includes an aerosol generation device and an aerosol generation article comprising an aerosol generation matrix. In use, the aerosol generation device is arranged to heat a heating element positioned near or in contact with the aerosol generation matrix, which heats the matrix and releases volatile compounds. These volatile compounds are then entrained in air drawn through the aerosol generation article. As the volatile compounds cool, they condense to form an aerosol that can be inhaled by a consumer.

[0003] Typical aerosol-generating articles can look similar to regular cigarettes and have similar dimensions. For example, such aerosol-generating articles can be substantially cylindrical and include an aerosol-generating matrix in addition to other components such as mouthpiece filter elements and cooling elements, which are arranged in strips and wrapped in cigarette paper.

[0004] However, a significant portion of the aerosol-generating matrix in these cylindrical aerosol-generating articles may not be adequately heated to form an aerosol during use. This is undesirable because the insufficiently heated portion of the aerosol-generating matrix affects the manufacturing and transportation costs of the aerosol-generating article, but not the aerosol delivered to the consumer. Furthermore, the components of these cylindrical aerosol-generating articles typically need to have the same or very similar outer diameters so that they can be assembled together, precisely aligned axially, and encased in cigarette paper. This can lead to increased manufacturing costs and complexity. Summary of the Invention

[0005] The purpose of this disclosure is to provide an aerosol generating article in which a significant portion of the aerosol generating matrix is ​​sufficiently heated during use to form an aerosol. The purpose of this disclosure is to provide an aerosol generating article in which the quality and quantity of the aerosol delivered to the user are optimized. The purpose of this disclosure is to provide an aerosol generating article with improved mechanical rigidity. The purpose of this disclosure is to provide an aerosol generating article that can be manufactured relatively efficiently and inexpensively.

[0006] According to this disclosure, an aerosol generating article is provided for use with an aerosol generating apparatus to generate aerosols. The aerosol generating article has a length extending in the x-direction, a width extending in the y-direction, and a thickness extending in the z-direction. The aerosol generating article may include a first planar outer surface. The first planar outer surface may extend in the x / y plane. The aerosol generating article may include a second planar outer surface. The second planar outer surface may extend in the x / y plane. The aerosol generating article may include one or more aerosol generating matrices. The aerosol generating article may include a cavity extending in the x-direction between a first end and a second end of the cavity. The cavity may include a converging segment. The converging segment may extend in the x-direction between a first end and a second end of the converging segment. The width of the converging segment may decrease along the length of the converging segment. The width of the converging segment may decrease along the length of the converging segment from the first end to the second end. The length of the converging segment may be greater than the width of the converging segment at the first end of the converging segment.

[0007] According to this disclosure, an aerosol generating article is provided for use with an aerosol generating apparatus to generate an aerosol, the aerosol generating article having a length extending in the x-direction, a width extending in the y-direction, and a thickness extending in the z-direction, the aerosol generating article comprising: one or more aerosol generating matrices; and a cavity extending in the x-direction between a first end and a second end of the cavity, wherein the cavity includes a converging segment extending in the x-direction between the first end and the second end of the converging segment, wherein the width of the converging segment decreases along the length of the converging segment from the first end to the second end, and wherein the length of the converging segment is greater than the width of the converging segment at the first end of the converging segment.

[0008] According to this disclosure, an aerosol generating article is provided for use with an aerosol generating apparatus to generate an aerosol, the aerosol generating article having a length extending in the x-direction, a width extending in the y-direction, and a thickness extending in the z-direction, the aerosol generating article comprising: a first planar outer surface; a second planar outer surface; one or more aerosol generating matrices; and a cavity extending in the x-direction between a first end and a second end of the cavity, wherein the cavity includes a converging segment extending in the x-direction between the first end and the second end of the converging segment, wherein the width of the converging segment decreases along the length of the converging segment from the first end to the second end, and wherein the length of the converging segment is greater than the width of the converging segment at the first end of the converging segment.

[0009] According to this disclosure, an aerosol generating article is provided for use with an aerosol generating apparatus to generate an aerosol, the aerosol generating article having a length extending in the x-direction, a width extending in the y-direction, and a thickness extending in the z-direction, the aerosol generating article comprising: a first planar outer surface extending in the x / y plane; a second planar outer surface extending in the x / y plane; one or more aerosol generating matrices; and a cavity extending in the x-direction between a first end and a second end of the cavity, wherein the cavity includes a converging segment extending in the x-direction between the first end and the second end of the converging segment, wherein the width of the converging segment decreases along the length of the converging segment from the first end to the second end, and wherein the length of the converging segment is greater than the width of the converging segment at the first end of the converging segment.

[0010] Therefore, the width of the convergent segment at the first end of the convergent segment is greater than the width of the convergent segment at the second end of the convergent segment.

[0011] Advantageously, the first and second planar outer surfaces allow good contact with the external heaters of the aerosol generating apparatus, particularly the planar external heaters, thereby providing effective heating of the aerosol generating matrix.

[0012] Advantageously, the aerosol-generating article of this disclosure can be heated substantially along its entire length and width, thereby allowing the entire aerosol-generating matrix to be sufficiently heated to generate an aerosol.

[0013] Advantageously, the airflow through the converging section of the cavity of the aerosol-generating article can be laminar. Therefore, minimal mixing is possible between the airflow passing through the converging section and adjacent to the wall of the aerosol-generating article and away from the center or central longitudinal axis of the converging section, and the airflow positioned towards the center of the converging section. Due to its proximity to the wall and surrounding environment, the airflow adjacent to the wall of the aerosol-generating article can be cooled to a greater extent compared to the airflow towards the center of the converging section. In the case of laminar airflow, the airflow towards the center of the converging section can be maintained at a desired temperature for better delivery of volatiles, such as nicotine and aerosol-forming agents including glycerol.

[0014] Vapor in a lower-temperature airflow is more likely to condense to form large droplets of the liquid aerosol matrix compared to vapor in a higher-temperature airflow. Therefore, laminar airflow in the converging section of the cavity, which results in less mixing of the cooler airflow at the sides with the warmer airflow toward the center, can advantageously reduce the condensation of vapor, especially vapor in the airflow toward the center of the cavity, and reduce the undesirable delivery of large droplets of the liquid aerosol matrix to the user.

[0015] During the initial aspiration phase of the user experience, a laminar airflow through the cavity is likely to be desirable. During this initial aspiration, the walls of the aerosol-generating article may be at ambient temperature. During use of the aerosol-generating article, the walls may become heated. Therefore, vapors generated during the initial aspiration phase are more likely to condense than vapors generated during subsequent aspiration phases. Thus, a laminar airflow may be particularly advantageous for avoiding the undesirable delivery of large droplets of the liquid aerosol-forming matrix to the user and for improving the delivery of volatiles.

[0016] The aerosol-generating article may include a frame located between the outer surfaces of a first plane and a second plane. Advantageously, the frame can allow the aerosol-generating article to be relatively thin while maintaining structural rigidity.

[0017] In the case where an aerosol-generating article includes a frame that at least partially defines a converging section of a cavity, the portion or section of the converging section defining the cavity may have increased width and radial thickness compared to other parts of the frame. This can improve the structural stiffness of both the frame and the aerosol-generating article. In particular, providing a converging section of the cavity can improve the structural stiffness of the aerosol-generating article without increasing its overall width.

[0018] Increasing the radial thickness or width of a frame segment can advantageously reduce the frame's permeability. Reducing frame permeability can improve the sealing of one or more aerosol-generating matrices in the aerosol-generating article, thereby improving the shelf life of the aerosol-generating article and the quality and quantity of aerosol delivered to the user. Reducing frame permeability ensures that air and aerosols travel along the desired airflow path through the aerosol-generating article. This can improve the quality and quantity of aerosol delivered to the user.

[0019] Advantageously, the aerosol-generating articles of this disclosure can be manufactured by a layered sheet material, which can be realized through a continuous manufacturing process, thereby producing aerosol-generating articles that are relatively easy and inexpensive to manufacture.

[0020] Increasing the radial thickness or width of a segment of the frame can provide increased area to allow the frame to adhere more easily and effectively to other components of the aerosol-generated article using adhesives, such as the first outer-plane layer forming the first outer-plane surface and the second outer-plane layer forming the second outer-plane surface. This can help increase the structural stiffness of the aerosol-generated article and prevent delamination. In cases where the frame is formed of multiple layers, increasing the width and area of ​​at least one segment of the frame may mean that the layers can adhere easily and firmly to each other. This can help increase the structural stiffness of the frame and prevent delamination. Preventing delamination of both the frame and the aerosol-generated article can advantageously reduce the air permeability of the frame and reduce unwanted airflow paths formed through the aerosol-generated article. This can improve the quality and quantity of aerosol delivered to the user.

[0021] The width of the converging segment can decrease along its entire length. In other words, the width of the converging segment can decrease from the first end to the second end of the converging segment along its length.

[0022] The width of the convergence section can be continuously reduced along the entire length of the convergence section.

[0023] The converging section may exclude portions whose width increases in the direction from the first end of the converging section to the second end of the converging section. The converging section may exclude portions with a constant width.

[0024] The width of the converging section at the second end of the converging section may be at least 30% of the width of the converging section at the first end of the converging section, at least 40% of the width of the converging section at the first end of the converging section, or at least 50% of the width of the converging section at the first end of the converging section.

[0025] The greater width of the converging section at the second end avoids abrupt and sudden changes in the cross-sectional area of ​​the cavity, and thus avoids abrupt and sudden changes in the cross-sectional area of ​​the airflow passage through the cavity. This could lead to a more laminar airflow passing through the converging section.

[0026] The width of the converging segment at the second end of the converging segment can be less than or equal to 90%, 80%, 70%, or 60% of the width of the converging segment.

[0027] The ratio of the width of the converging section at the second end to the width of the converging section at the first end can be selected based on the desired airflow characteristics through the converging section. The ratio of the width of the converging section at the second end to the width of the converging section at the first end can also be selected based on the desired shape and size of the cavity and the desired shape and size of the aerosol-generated article.

[0028] The width of the converging segment at the second end of the converging segment can be between 30% and 90% of the width of the converging segment at the second end of the converging segment, between 30% and 80% of the width of the converging segment at the second end of the converging segment, between 30% and 70% of the width of the converging segment at the second end of the converging segment, or between 30% and 60% of the width of the converging segment at the second end of the converging segment.

[0029] The width of the converging segment at the second end of the converging segment can be between 40% and 90% of the width of the converging segment at the second end of the converging segment, between 40% and 80% of the width of the converging segment at the second end of the converging segment, between 40% and 70% of the width of the converging segment at the second end of the converging segment, or between 40% and 60% of the width of the converging segment at the second end of the converging segment.

[0030] The width of the converging segment at the second end of the converging segment can be between 50% and 90% of the width of the converging segment at the second end of the converging segment, between 50% and 80% of the width of the converging segment at the second end of the converging segment, between 50% and 70% of the width of the converging segment at the second end of the converging segment, or between 50% and 60% of the width of the converging segment at the second end of the converging segment.

[0031] The difference in width between the first and second ends of the convergence section can be less than or equal to 6 mm, less than or equal to 5 mm, or less than or equal to 4 mm.

[0032] The difference in width between the first and second ends of the converging section can be at least 2 mm, at least 2.5 mm, or at least 3 mm.

[0033] The difference in width between the first and second ends of the converging section can be selected based on the desired airflow characteristics through the converging section. The difference in width between the first and second ends of the converging section can also be selected based on the desired shape and size of the cavity and the desired shape and size of the aerosol-generated article.

[0034] The difference in width between the first and second ends of the converging section can be between 2 mm and 6 mm, between 2 mm and 5 mm, or between 2 mm and 4 mm.

[0035] The difference in width between the first and second ends of the converging section can be between 2.5 mm and 6 mm, between 2.5 mm and 5 mm, or between 2.5 mm and 4 mm.

[0036] The difference in width between the first and second ends of the converging section can be between 3 mm and 6 mm, between 3 mm and 5 mm, or between 3 mm and 4 mm.

[0037] The width of the converging section at its first end can be equal to the width of the cavity. In other words, the maximum width of the cavity can be at the first end of the converging section.

[0038] The converging section may extend for at least 30% of the length of the cavity. In other words, the converging section may have a length greater than or equal to 30% of the length of the cavity. The converging section may have a length greater than or equal to 40% or greater than or equal to 50% of the length of the cavity.

[0039] A longer convergence section can provide a slow convergence zone and avoid abrupt and sudden changes in the cross-sectional area of ​​the cavity, and thus avoid abrupt and sudden changes in the cross-sectional area of ​​the airflow passage through the cavity. Therefore, a longer convergence section can lead to a more laminar airflow passing through the convergence section.

[0040] The converging section may have a length less than or equal to 80%, 70%, or 60% of the length of the cavity.

[0041] The length of the converging section can be selected based on the desired balance between the desired airflow characteristics through the converging section and the desired shape and size of the cavity, and based on the desired shape and size of the aerosol-generated article.

[0042] The converging segment may have a length between 30% and 90% of the length of the cavity, between 30% and 80% of the length of the cavity, between 30% and 70% of the length of the cavity, or between 30% and 60% of the length of the cavity.

[0043] The converging segment may have a length between 40% and 90% of the length of the cavity, between 40% and 80% of the length of the cavity, between 40% and 70% of the length of the cavity, or between 40% and 60% of the length of the cavity.

[0044] The converging segment may have a length between 50% and 90% of the length of the cavity, between 50% and 80% of the length of the cavity, between 50% and 70% of the length of the cavity, or between 50% and 60% of the length of the cavity.

[0045] For example, the width of the converging segment at the second end of the converging segment can be between 30% and 90% of the width of the converging segment at the first end of the converging segment, and the converging segment can have a length between 30% and 80% of the length of the converging segment.

[0046] The length of the converging segment is greater than the width of the converging segment at its first end. The length of the converging segment can be at least 1.2 times, at least 1.5 times, or at least 2 times the width of the converging segment at its first end. The length of the converging segment can be at most 3 times the width of the converging segment at its first end.

[0047] The difference between the width of the converging segment at its first end and the width of the converging segment at its second end, divided by the length of the converging segment, can be less than or equal to 1 mm / mm, less than or equal to 0.8 mm / mm, less than or equal to 0.6 mm / mm, or less than or equal to 0.4 mm / mm. For example, in the case where the converging segment has a width of 6 mm at its first end, a width of 3 mm at its second end, and a length of 10 mm, the difference between the width of the converging segment at its first end and the width of the converging segment at its second end, divided by the length of the converging segment, is 0.3 mm / mm.

[0048] The difference between the width of the converging section at the first end of the converging section and the width of the converging section at the second end of the converging section, divided by the length of the converging section, can be greater than or equal to 0.1 mm / mm.

[0049] The difference between the width of the converging section at the first end of the converging section and the width of the converging section at the second end of the converging section, divided by the length of the converging section, can be between 0.1 mm / mm and 1 mm / mm, between 0.1 mm / mm and 0.8 mm / mm, between 0.1 mm / mm and 0.6 mm / mm, or between 0.1 mm / mm and 0.4 mm / mm.

[0050] The difference between the width of the converging section at its first end and the width at its second end, divided by the length of the converging section, represents the rate of change of the width of the converging section along its length. A decrease in the rate of change of width can promote more laminar airflow through the converging section.

[0051] Aerosol-generating articles include one or more aerosol-generating matrices.

[0052] The converging section of the cavity may be substantially free of aerosol-generating matrix.

[0053] The converging section of the cavity can be essentially empty.

[0054] The aerosol-generating article has a length extending in the x-direction. The aerosol-generating article has a width extending in the y-direction. The aerosol-generating article has a thickness extending in the z-direction.

[0055] The aerosol-generating article can be substantially flat or substantially planar. In particular, the thickness of the aerosol-generating article can be less than both its length and width. For example, the thickness of the aerosol-generating article can be less than 50% of both its length and width. Advantageously, a smaller thickness can provide a smaller temperature gradient or difference across the thickness of the aerosol-generating matrix during heating.

[0056] Aerosol-generated articles can have a quadrilateral hexahedral shape. Aerosol-generated articles can have a rectangular prism shape. Aerosol-generated articles can have a cuboid shape. Aerosol-generated articles can have a prism shape. Aerosol-generated articles can have a right-angled prism shape.

[0057] Aerosol-generating articles may have a laminated or layered structure; for example, an aerosol-generating article may include at least two layers or be formed of at least two layers. In particular, as discussed in more detail below, an aerosol-generating article may include at least two of the following: a first outer layer, a second outer layer, a frame, a first frame layer, a second frame layer, a third frame layer, a first aerosol-generating matrix layer, and a second aerosol-generating matrix layer.

[0058] Essentially all aerosol-generated articles, except for one or more aerosol-generating matrices and (if present) adhesives, can be paper or cardboard.

[0059] Aerosol-generated products may contain less than 5% cellulose acetate. Aerosol-generated products may contain less than 3% cellulose acetate. Aerosol-generated products may contain less than 1% cellulose acetate.

[0060] The aerosol-generated article may include a frame. The frame may be located between the outer surface of a first plane and the outer surface of a second plane.

[0061] A frame can at least partially define a cavity. A frame can at least partially define the converging segments of a cavity.

[0062] The frame can be a planar frame.

[0063] The frame can define frame openings extending through its thickness. These frame openings can define or form airflow pathways for the aerosol-generating article. The frame openings can also define or form cavities in the aerosol-generating article. For example, the frame can have a hollow cuboid shape or a square hollow tube shape. As another example, the frame can have a cross-section that is annular in shape, preferably an annular cross-section in the x / y plane.

[0064] The frame may include an outer surface. The outer surface may extend in a lateral direction, for example, between a first planar outer surface and a second planar outer surface. The outer surface may at least partially define or form one or more outer surfaces of the aerosol-generating article. For example, the outer surface may at least partially define or form one or more outer walls of the aerosol-generating article. The outer surface may define or surround a frame orifice. The outer surface may define or surround a cavity.

[0065] The frame may include an inner surface. The inner surface may extend in a transverse direction, for example, between a first planar outer surface and a second planar outer surface. The inner surface may define or form the outer wall of a frame orifice. The inner surface may define or form the outer wall of a cavity. The inner surface may define or surround a frame orifice extending through the thickness of the frame. The inner surface may define or surround a cavity.

[0066] The outer surface of the frame can define or surround the inner surface of the frame. The inner and outer surfaces of the frame can be concentric.

[0067] An aerosol-generating article may include one or more outer walls extending between a first planar outer surface and a second planar outer surface. The one or more outer walls may collectively define the entire lateral external region of the aerosol-generating article. A frame may at least partially define each of the one or more outer walls. The one or more outer walls may define or surround a cavity. The frame may define at least 60%, at least 70%, at least 80%, or at least 90% of the entire lateral external region of the aerosol-generating article.

[0068] The frame may include a peripheral wall. The peripheral wall may define or surround at least a portion of the cavity. The peripheral wall may define or surround at least a portion of a frame opening extending through the thickness of the frame.

[0069] The peripheral wall may be defined or formed by the outer surface and inner surface of the frame. The peripheral wall may at least partially define or form one or more outer surfaces or walls of the aerosol-generating article. The peripheral wall may define or form the outer wall of a frame orifice. The peripheral wall may define at least a portion of a cavity. The peripheral wall may define a cavity. The peripheral wall may define or form the outer wall of a cavity.

[0070] The peripheral walls can define or define at least a portion of the cavity.

[0071] The peripheral walls may have a radial thickness. The radial thickness may be defined (e.g., in the x / y plane) as the minimum distance between the outer surface and the inner surface of the frame.

[0072] The peripheral wall may have a radial thickness greater than or equal to 0.5 mm. The peripheral wall may have a radial thickness greater than or equal to 1.5 mm. The peripheral wall may have a radial thickness greater than or equal to 2.5 mm.

[0073] The peripheral wall may have a radial thickness of less than or equal to 3.5 mm. The peripheral wall may have a radial thickness of less than or equal to 2.5 mm.

[0074] The peripheral wall may have a radial thickness between 0.5 mm and 3.5 mm.

[0075] Advantageously, it has been found that peripheral walls with a radial thickness between 0.5 mm and 3.5 mm provide good structural strength to aerosol-generating articles without using excessive materials that could increase manufacturing costs, and can limit the amount of heat that is undesirably transferred to the frame rather than the aerosol-generating matrix.

[0076] The peripheral wall may include a front wall and a rear wall. The front wall is located at the upstream end or first end of the peripheral wall. The rear wall is located at the downstream end or second end of the peripheral wall.

[0077] The peripheral wall may include one or more sidewalls extending from the front wall to the rear wall. The peripheral wall may include a first sidewall extending from the front wall to the rear wall. As discussed below, the first sidewall may include a first converging sidewall segment and a first parallel sidewall segment, or may be composed of a first converging sidewall segment and a first parallel sidewall segment. The peripheral wall may include a second sidewall extending from the front wall to the rear wall. As discussed below, the second sidewall may include a second converging sidewall segment and a second parallel sidewall segment, or may be composed of a second converging sidewall segment and a second parallel sidewall segment.

[0078] The perimeter wall of the frame may include a first converging sidewall segment and a second converging sidewall segment.

[0079] The first converging sidewall segment may have length. The second converging sidewall segment may have length.

[0080] The first and second converging sidewall segments may both define at least a portion of the converging segment of the cavity. The first and second converging sidewall segments may define at least a portion of the length of the converging segment of the cavity. The first and second converging sidewall segments may define the entire length of the converging segment of the cavity.

[0081] A first converging sidewall segment may extend from a first end of the converging segment of the cavity to a second end of the converging segment of the cavity. A second converging sidewall segment may extend from a first end of the converging segment of the cavity to a second end of the converging segment of the cavity.

[0082] The second converging sidewall segment may be opposite the first converging sidewall segment. This allows the width of the converging segment of the partition cavity between the first and second converging sidewall segments to be defined.

[0083] The first and second convergent sidewall segments may not be parallel to each other. Neither the first nor the second convergent sidewall segment may be parallel to the x-direction.

[0084] The width of one or both of the first and second converging sidewall sections may increase along the x-direction. The width of one or both of the first and second converging sidewall sections may increase along the x-direction from the first end of the converging section toward the second end of the converging section. The width of one or both of the first and second converging sidewall sections may decrease along the x-direction from the second end of the converging section toward the first end of the converging section. The width of one or both of the first and second converging sidewall sections may increase along the x-direction from the first end of the converging section to the second end of the converging section.

[0085] The inner surface of the first converging sidewall segment may define at least a portion of the converging segment of the cavity. The inner surface of the second converging sidewall segment may define at least a portion of the converging segment of the cavity.

[0086] The inner surfaces of the first converging sidewall section and the inner surfaces of the second converging sidewall section may form an angle of less than or equal to 35 degrees, less than or equal to 30 degrees, less than or equal to 25 degrees, or less than or equal to 20 degrees relative to each other.

[0087] The first and second converging sidewall sections have inner surfaces that are at a smaller angle to each other, which can promote a more laminar airflow.

[0088] The inner surfaces of the first converging sidewall section and the second converging sidewall section may be at an angle of at least 5 degrees or at least 10 degrees relative to each other.

[0089] The angles between the inner surfaces of the first and second converging sidewall sections relative to each other can be selected based on the desired airflow characteristics through the converging sections, the overall shape and size of the cavity, and the overall shape and size of the aerosol-generated article.

[0090] The inner surfaces of the first converging sidewall section and the second converging sidewall section may be at an angle between 5 and 35 degrees, 5 and 30 degrees, 5 and 25 degrees, or 5 and 20 degrees relative to each other.

[0091] The inner surfaces of the first converging sidewall section and the second converging sidewall section may be at an angle between 10 and 35 degrees, 10 and 30 degrees, 10 and 25 degrees, or 10 and 20 degrees relative to each other.

[0092] The inner surface of the first converging sidewall section may be planar. The inner surface of the second converging sidewall section may be planar. The inner surfaces of both the first and second converging sidewall sections may be planar.

[0093] The converging section of the cavity can have a cross-section that is essentially trapezoidal in the x / y plane.

[0094] The outer surface of the first converging sidewall segment can be planar. The outer surface of the second converging sidewall segment can be planar. Both the outer surfaces of the first and second converging sidewall segments can be planar.

[0095] The outer surface of the first converging sidewall segment can be substantially parallel to the outer surface of the second converging sidewall segment.

[0096] The outer surfaces of both the first and second converging sidewall sections can be parallel to the x-direction.

[0097] The converging section can be positioned toward the second end or downstream end of the cavity. The converging section can extend to the second end of the cavity.

[0098] The converging segment of the cavity may extend to the posterior wall of the peripheral wall. The first and second converging sidewall segments of the peripheral wall may both extend to the posterior wall of the peripheral wall.

[0099] The converging section may be positioned toward a second or downstream end of the aerosol-generating article. The converging section may extend to the air outlet of the aerosol-generating article. Specifically, one or more inner surfaces of the converging section may extend to the air outlet of the aerosol-generating article. The width of the converging section at its second end may be substantially the same as the width of the air outlet.

[0100] The cavity may not include another converging segment located immediately downstream of the converging segment. In the case where the cavity includes another segment located immediately downstream of the converging segment and extending from the second end of the converging segment toward the second end of the cavity, the width of this other segment may not decrease abruptly from the second end of the converging segment or the first end of this other segment toward the second end of this other segment or the second end of the cavity along the length of this other segment.

[0101] The cavity may include a non-converging segment. The non-converging segment of the cavity may extend from a first or upstream end of the non-converging segment to a second or downstream end of the non-converging segment.

[0102] The cavity may include parallel segments. The parallel segments of the cavity have a constant width along their entire length. The parallel segments of the cavity may extend from a first or upstream end of the parallel segment to a second or downstream end.

[0103] The periphery of the frame may include a first parallel sidewall segment and a second parallel sidewall segment. The first parallel sidewall segment and the second parallel sidewall segment may be opposite each other. The separation between the first parallel sidewall segment and the second parallel sidewall segment may define the width of the parallel segment of the cavity.

[0104] The first parallel sidewall segment may have a length. The second parallel sidewall segment may have a length. The first parallel sidewall segment may be parallel to the second parallel sidewall segment. The first and second parallel sidewall segments may both be parallel to the x-direction. The first and second parallel sidewalls may both extend in the x / z plane.

[0105] The first parallel sidewall segment and the second parallel sidewall segment can both define at least a portion of the parallel segment of the cavity. The first parallel sidewall segment and the second parallel sidewall segment can define at least a portion of the length of the parallel segment of the cavity. The first parallel sidewall segment and the second parallel sidewall segment can define the entire length of the parallel segment of the cavity.

[0106] The first parallel sidewall segment may extend from the first end of the parallel segment of the cavity to the second end of the parallel segment of the cavity. The parallel converging sidewall segment may extend from the first end of the parallel segment of the cavity to the second end of the parallel segment of the cavity.

[0107] The widths of both the first and second parallel sidewall sections can be constant along the x-direction.

[0108] The inner surface of the first parallel sidewall segment may define at least a portion of the parallel segment of the cavity. The inner surface of the second parallel sidewall segment may define at least a portion of the parallel segment of the cavity.

[0109] The inner surface of the first parallel sidewall section can be planar. The inner surface of the second parallel sidewall section can be planar. Both the inner surfaces of the first and second parallel sidewall sections can be planar.

[0110] The parallel sections of the cavity can have a cross-section that is substantially rectangular or square in the x / y plane.

[0111] The parallel section can be positioned toward the first end or the upstream end of the cavity.

[0112] The parallel segment may extend to the first end of the cavity. The parallel segment may be located upstream of the cavity or at the first end. In other words, the first end of the parallel segment may be at the first end of the cavity.

[0113] The parallel segment of the cavity may extend to the anterior wall of the peripheral wall. The first and second parallel sidewall segments of the peripheral wall may both extend to the posterior wall of the peripheral wall.

[0114] The parallel section can be positioned towards the first or upstream end of the aerosol-generating article. The parallel section can extend to the air inlet of the aerosol-generating article.

[0115] A parallel segment of a cavity can be located adjacent to a converging segment of the cavity. A parallel segment of a cavity can be immediately adjacent to a converging segment of the cavity. The cavity may not include a segment located between the parallel segment and the converging segment. A parallel segment of a cavity can be located upstream of the converging segment of the cavity. For example, the second end of the parallel segment of a cavity can coincide with the first end of the converging segment of the cavity.

[0116] A first parallel sidewall segment may extend from the front wall of the peripheral wall to a first converging sidewall segment. Specifically, the first parallel sidewall segment may extend from the front wall of the peripheral wall to a first end of the first converging sidewall segment. The first converging sidewall segment may extend from the first parallel sidewall segment to the rear wall of the peripheral wall. Specifically, the first converging sidewall segment may extend from a second end of the first parallel sidewall segment to the rear wall of the peripheral wall.

[0117] The second parallel sidewall segment may extend from the front wall of the peripheral wall to the second converging sidewall segment. Specifically, the second parallel sidewall segment may extend from the front wall of the peripheral wall to a first end of the second converging sidewall segment. The second converging sidewall segment may extend from the second parallel sidewall segment to the rear wall of the peripheral wall. Specifically, the second converging sidewall segment may extend from a second end of the second parallel sidewall segment to the rear wall of the peripheral wall.

[0118] The aerosol generating article may include an airflow path or passage extending from an air inlet of the aerosol generating article to an air outlet of the aerosol generating article through both a parallel section and a converging section of the cavity. During use of the aerosol generating article, air may be drawn into the aerosol generating article through the air inlet at a first end of the aerosol generating article, enter the parallel section of the cavity, then enter the converging section of the cavity, and then exit the aerosol generating article through the air outlet.

[0119] The width of the parallel section of the cavity can correspond to the width of the converging section of the cavity at the first end of the converging section.

[0120] Parallel segments may have a length greater than or equal to 20%, 30%, or 40% of the length of the cavity.

[0121] Parallel segments may have a length less than or equal to 70%, 60%, or 50% of the length of the cavity.

[0122] Parallel segments may have a length between 20% and 70%, 20% and 60%, or 20% and 50% of the cavity length. Parallel segments may have a length between 30% and 70%, 30% and 60%, or 30% and 50% of the cavity length. Parallel segments may have a length between 40% and 70%, 40% and 60%, or 40% and 50% of the cavity length.

[0123] The length of a cavity can be equal to the sum of the lengths of the parallel segments and the converging segments. A cavity can be composed of parallel segments and converging segments.

[0124] At least one of the one or more aerosol generating matrices may be positioned toward a first or upstream end of the aerosol generating article. At least one of the one or more aerosol generating matrices may be located in a parallel section of the cavity.

[0125] At least one of the one or more aerosol generating matrices may have a length substantially the same as the length of the parallel segment of the cavity. The at least one or more aerosol generating matrices may be located within the parallel segment of the cavity and extend from a first end of the parallel segment to a second end of the parallel segment.

[0126] The shape and size of the parallel sections of the cavity can be configured to accommodate at least one aerosol generating matrix from one or more aerosol generating matrices. This allows the aerosol generating matrix to be effectively heated during use of the aerosol generating article.

[0127] At least one of the one or more aerosol generating matrices may have a length less than the length of the parallel segment of the cavity.

[0128] At least one of the one or more aerosol generating matrices may be spaced apart from the second end of the parallel segment in the x-direction. At least one or more aerosol generating matrices may be located in the parallel segment of the cavity and extend from the first end of the parallel segment toward the second end of the parallel segment.

[0129] At least one of the one or more aerosol generating matrices may be spaced apart from the first end of the parallel segment in the x-direction. At least one or more aerosol generating matrices may be located in the parallel segment of the cavity and extend from the second end of the parallel segment to the first end of the parallel segment.

[0130] At least one of the one or more aerosol generating matrices may be spaced apart from both the first end and the second end of the parallel segment in the x-direction.

[0131] At least one of the one or more aerosol generating matrices may have a width substantially the same as the width of the parallel segment of the cavity.

[0132] Converging sections with reduced width can prevent aerosol-generating matrix from migrating into the convergent sections.

[0133] The frame may be made of or contain biodegradable materials. The frame may be made entirely of biodegradable materials.

[0134] The frame may be made of or contain cellulose-based materials. Cellulose-based materials may include cellulose-based material sheets. Cellulose-based materials may include cellulose fibers. Cellulose-based materials may be paper, paperboard, or cardboard. The frame may be made of or contain plant materials such as tobacco. The frame may be made entirely of cellulose-based materials. The frame may not be an aerosol-generating matrix. The frame may contain less than or equal to 5%, less than or equal to 2%, or less than or equal to 1% aerosol forming agent by dry weight.

[0135] The perimeter walls of the frame can be made of or contain biodegradable materials. The perimeter walls of the frame can be made entirely of biodegradable materials.

[0136] The perimeter walls of the frame may be made of or contain cellulose-based materials. Cellulose-based materials may include cellulose-based material sheets. Cellulose-based materials may include cellulose fibers. Cellulose-based materials may be paper, paperboard, or cardboard. The perimeter walls of the frame may be made of or contain plant materials such as tobacco. The perimeter walls of the frame may be made entirely of cellulose-based materials. The perimeter walls of the frame may not be an aerosol-generating matrix. The perimeter walls of the frame may contain less than or equal to 5%, less than or equal to 2%, or less than or equal to 1% aerosol forming agent by dry weight.

[0137] Aerosol-generating articles may include one or more receptor materials. Frames may include one or more receptor materials. One or more receptor materials may be in thermal contact with the aerosol-generating matrix. One or more receptor materials may be in thermal contact with the cavity. One or more receptor materials may be included within the material of the frame. For example, one or more receptor materials may be included within the peripheral wall of the frame.

[0138] One or more receptor materials can be one or more receptor material particles, strips, threads, or filaments. One or more receptor materials can be one or more receptor material sheets or layers. One or more receptor material sheets or layers can be in the form of a receptor material mesh.

[0139] The receptor material in any form may contain one or more materials selected from the following: aluminum, iron and iron alloys, nickel and nickel alloys, cobalt alloys, stainless steel alloys, copper alloys, carbon, expanded carbon, and graphite.

[0140] The frame may have a thickness greater than or equal to 50% of the thickness of the aerosol-generating article. The frame may have a thickness greater than or equal to 70% of the thickness of the aerosol-generating article. The frame may have a thickness greater than or equal to 90% of the thickness of the aerosol-generating article. The frame may have a thickness greater than or equal to 95% of the thickness of the aerosol-generating article.

[0141] The frame may have a thickness less than or equal to 95% of the thickness of the aerosol-generating article. The frame may have a thickness less than or equal to 90% of the thickness of the aerosol-generating article. The frame may have a thickness less than or equal to 70% of the thickness of the aerosol-generating article.

[0142] The frame may have a thickness between 50% and 95% of the thickness of the aerosol-generating article. Alternatively, the frame may have a thickness between 70% and 95% of the thickness of the aerosol-generating article.

[0143] The frame may have a thickness greater than or equal to 1 mm, greater than or equal to 2 mm, greater than or equal to 3 mm, or greater than or equal to 4 mm. The frame may have a thickness less than or equal to 5.5 mm, less than or equal to 4.5 mm, less than or equal to 3.5 mm, less than or equal to 2.5 mm, or less than or equal to 1.5 mm. The frame may have a thickness between 1 mm and 5.5 mm. Preferably, the frame may have a thickness between 1.5 mm and 5.5 mm.

[0144] The frame may have a length equal to the length of the aerosol-generating article. The frame may have a length that is at least 90% of the length of the aerosol-generating article. The frame may have a length that is at least 95% of the length of the aerosol-generating article.

[0145] The frame may have a width equal to the width of the aerosol-generating article. The frame may have a width that is at least 90% of the width of the aerosol-generating article.

[0146] The frame can be a single, integral component. Alternatively, the frame can comprise two or more layers. That is, the frame can have a laminated structure. Advantageously, the properties of each layer can be individually optimized depending on the relative distance between the layer and the aerosol generating matrix or the heater of the aerosol generating device.

[0147] The frame may include a first frame layer and a second frame layer. The first frame layer and the second frame layer may be the only layers of the frame. That is, the frame may include no more than two layers or may include exactly two layers. Frame openings may be defined to pass through both the first frame layer and the second frame layer.

[0148] A framework may include a first frame layer, a second frame layer, and a third frame layer. The second frame layer may be located between the first and third frame layers. The first, second, and third frame layers may be the only layers of the framework. That is, a framework may include no more than three layers or may include exactly three layers.

[0149] One or more aerosol generating matrices may comprise an aerosol generating matrix layer. Advantageously, the aerosol generating matrix layer can be made thin and thus heats up rapidly and releases volatile compounds to form aerosols. Advantageously, the aerosol generating matrix layer can be positioned close to the heater of the aerosol generating device.

[0150] The aerosol generation matrix layer may contain an aerosol generation material. The aerosol generation material may be any aerosol generation material described herein. The aerosol generation material may be in the form of an aerosol generation material sheet. The aerosol generation material sheet may be any aerosol generation material sheet described herein. The aerosol generation matrix layer may be an aerosol generation material sheet and may be made entirely of an aerosol generation material sheet.

[0151] The aerosol generation matrix layer can be positioned between the frame and the outer surface of the first plane. The aerosol generation matrix layer can be positioned between the frame and the outer surface of the second plane. The aerosol generation matrix layer can be in physical contact with the frame and can be bonded to the frame.

[0152] The aerosol generating matrix layer can be positioned between the frame and the outer packaging. The outer packaging is discussed in more detail below. The aerosol generating matrix layer can be in physical contact with both the frame and the outer packaging, and can be bonded to both.

[0153] The aerosol generation matrix layer can be positioned between the frame and the first planar outer layer. The aerosol generation matrix layer can also be positioned between the frame and the second planar outer layer. The first and second planar outer layers are discussed in more detail below. The aerosol generation matrix layer can be in physical contact with both the frame and the first planar outer layer, and can be bonded to both. The aerosol generation matrix layer can be in physical contact with both the frame and the second planar outer layer, and can be bonded to both.

[0154] The aerosol-generating matrix layer may cover the ends of the cavity. The aerosol-generating matrix layer may define at least a portion of the cavity. The aerosol-generating matrix layer may define or form the walls of the cavity, such as a first cavity end wall or a second cavity end wall. Advantageously, the aerosol-generating matrix layer may therefore be located in or at least partially define or form a gas flow path, thereby allowing the released volatile compounds to rapidly form aerosols.

[0155] One or more aerosol generating matrices may include a first aerosol generating matrix layer and a second aerosol generating matrix layer. Advantageously, compared to using a single aerosol generating matrix layer, the first and second aerosol generating matrix layers can allow for the rapid generation of aerosols of a satisfactory volume.

[0156] The first aerosol generating matrix layer may contain an aerosol generating material. The aerosol generating material may be any aerosol generating material described herein. The aerosol generating material may be in the form of an aerosol generating material sheet. The aerosol generating material sheet may be any aerosol generating material sheet described herein. The first aerosol generating matrix layer may be an aerosol generating material sheet and may be made entirely of an aerosol generating material sheet.

[0157] The second aerosol generating matrix layer may contain an aerosol generating material. The aerosol generating material may be any aerosol generating material described herein. The aerosol generating material may be in the form of an aerosol generating material sheet. The aerosol generating material sheet may be any aerosol generating material sheet described herein. The second aerosol generating matrix layer may be an aerosol generating material sheet and may be made entirely of an aerosol generating material sheet.

[0158] The first aerosol generation matrix layer can be positioned between the frame and the outer surface of the first plane. The first aerosol generation matrix layer can be in physical contact with the frame and can be bonded to the frame.

[0159] The first aerosol generating matrix layer can be positioned between the frame and the outer packaging. The first aerosol generating matrix layer can be in physical contact with both the frame and the outer packaging, and can be bonded to both the frame and the outer packaging.

[0160] The first aerosol generation matrix layer can be positioned between the frame and the first planar outer layer. The first aerosol generation matrix layer can be in physical contact with both the frame and the first planar outer layer, and can be bonded to both the frame and the first planar outer layer.

[0161] The second aerosol-generating matrix layer can be positioned between the frame and the outer surface of the second plane. The second aerosol-generating matrix layer can be in physical contact with the frame and can be bonded to the frame.

[0162] The second aerosol generating matrix layer can be positioned between the frame and the outer packaging. The second aerosol generating matrix layer can be in physical contact with both the frame and the outer packaging, and can be bonded to both.

[0163] The second aerosol generating matrix layer can be positioned between the frame and the second planar outer layer. The second aerosol generating matrix layer can be in physical contact with both the frame and the second planar outer layer, and can be bonded to both the frame and the second planar outer layer.

[0164] The first and second aerosol generating matrix layers may cover the opposite ends of the cavity. The first and second aerosol generating matrix layers may define or form the opposite end walls of the cavity. That is, the frame, the first and second aerosol generating matrix layers may jointly define the cavity.

[0165] One or more of the aerosol generating matrix layer, the first aerosol generating matrix layer, and the second aerosol generating matrix layer may have a thickness of 100 micrometers or more, 200 micrometers or more, 300 micrometers or more, 400 micrometers or more, or 500 micrometers or more.

[0166] One or more of the aerosol generating matrix layer, the first aerosol generating matrix layer, and the second aerosol generating matrix layer may have a thickness of less than or equal to 600 micrometers, less than or equal to 500 micrometers, less than or equal to 400 micrometers, less than or equal to 300 micrometers, or less than or equal to 300 micrometers.

[0167] One or more of the aerosol generating matrix layer, the first aerosol generating matrix layer, and the second aerosol generating matrix layer may have a thickness between 100 micrometers and 600 micrometers, between 200 micrometers and 500 micrometers, between 200 micrometers and 400 micrometers, or between 200 micrometers and 300 micrometers.

[0168] The aerosol generation matrix layer may have a length substantially the same as the length of the frame. The aerosol generation matrix layer may have a length substantially the same as the length of the aerosol-generated article.

[0169] The first aerosol-generating matrix layer may have a length substantially the same as the length of the frame. The first aerosol-generating matrix layer may have a length substantially the same as the length of the aerosol-generated article.

[0170] The second aerosol-generating matrix layer may have a length substantially the same as the length of the frame. The second aerosol-generating matrix layer may have a length substantially the same as the length of the aerosol-generated article.

[0171] The aerosol generation matrix layer may have a width substantially the same as the width of the frame. The aerosol generation matrix layer may have a width substantially the same as the width of the aerosol generation article.

[0172] The first aerosol generation matrix layer may have a width substantially the same as the width of the frame. The first aerosol generation matrix layer may have a width substantially the same as the width of the aerosol generation article.

[0173] The second aerosol-generating matrix layer may have a width substantially the same as the width of the frame. The second aerosol-generating matrix layer may have a width substantially the same as the width of the aerosol-generated article.

[0174] The first planar outer surface can be an upper planar surface, and the second planar outer surface can be a lower planar surface. The first planar outer surface can be positioned parallel to the second planar outer surface. The first planar outer surface can extend in the x / y plane. The second planar outer surface can extend in the x / y plane. The second planar outer surface can be spaced apart from the first planar outer surface in the z-direction or the lateral direction. The distance between the first and second planar outer surfaces in the z-direction or the lateral direction can define the thickness of the aerosol-generated article.

[0175] Aerosol-generating articles may include outer packaging. The outer packaging may be hydrophobic. The outer packaging may contain hydrophobic materials.

[0176] The outer packaging may define or form a first planar outer surface. The outer packaging may define or form a second planar outer surface. The outer packaging may define or form both the first and second planar outer surfaces.

[0177] The outer packaging may define or surround the frame. The outer packaging may be in physical contact with the frame and may be attached to the frame. The outer packaging may cover opposite ends of the cavity. The outer packaging may define or form opposite end walls of the cavity, such as a first cavity end wall and a second cavity end wall. That is, the frame and the outer packaging may together define the cavity.

[0178] The outer packaging may define or surround the frame and the aerosol-generating matrix layer. The outer packaging may be in physical contact with both the frame and the aerosol-generating matrix layer, and may be bonded to both.

[0179] The outer packaging may define or surround the frame, the first aerosol generating matrix layer, and the second aerosol generating matrix layer. The outer packaging may be in physical contact with both the first and second aerosol generating matrix layers, and may be bonded to both the first and second aerosol generating matrix layers.

[0180] The aerosol-generating article may include a first outer plane layer and a second outer plane layer. The first outer plane layer may be the upper layer, and the second outer plane layer may be the lower layer.

[0181] The first outer plane layer may define or form a first outer plane surface. The first outer plane layer may extend in the x / y plane. The second outer plane layer may define or form a second outer plane surface. The second outer plane layer may extend in the x / y plane.

[0182] The frame can be positioned between the first outer plane layer and the second outer plane layer. The cavity can be defined by the frame, the first outer plane layer, and the second outer plane layer.

[0183] The first planar outer layer may be in physical contact with the frame and may be bonded to the frame. The first planar outer layer may cover the end of the cavity. The first planar outer layer may define or form the wall of the cavity, such as a first cavity end wall or top wall.

[0184] The second outer plane layer may be in physical contact with the frame and may be bonded to the frame. The second outer plane layer may cover the ends of the cavity. The second outer plane layer may define or form the walls of the cavity, such as second cavity end walls or bottom walls.

[0185] The first and second outer plane layers may cover opposite ends of the cavity. The first and second outer plane layers may define or form opposite end walls of the cavity, such as the first cavity end wall or top wall and the second cavity end wall or bottom wall. That is, the frame, the first and second outer plane layers may together define the cavity.

[0186] At least one of the one or more aerosol generating matrices may be located between the first outer plane layer and the second outer plane layer.

[0187] The first planar outer layer may be spaced apart from the frame (e.g., in the lateral direction). For example, the aerosol generating matrix layer or the first aerosol generating matrix layer may be positioned between the first planar outer layer and the frame. The first planar outer layer may be in physical contact with the aerosol generating matrix layer or the first aerosol generating matrix layer, and may be bonded to the aerosol generating matrix layer or the first aerosol generating matrix layer.

[0188] The second outer plane layer may be spaced apart from the frame (e.g., in the lateral direction). For example, the aerosol generating matrix layer or the second aerosol generating matrix layer may be positioned between the second outer plane layer and the frame. The second outer plane layer may be in physical contact with the aerosol generating matrix layer or the second aerosol generating matrix layer, and may be bonded to the aerosol generating matrix layer or the second aerosol generating matrix layer.

[0189] The first outer plane may be hydrophobic. The first outer plane may contain a hydrophobic material. The second outer plane may be hydrophobic. The second outer plane may contain a hydrophobic material.

[0190] One or more of the outer packaging material, the first planar outer layer, and the second planar outer layer may contain or be made of cellulosic materials. Cellulosic materials may be paper, cigarette paper, tobacco paper, cardboard, wood, textiles, natural fibers, or synthetic fibers.

[0191] One or more of the outer packaging, the first planar outer layer, and the second planar outer layer may be an aerosol generating matrix comprising aerosol generating material. The aerosol generating material may be any aerosol generating material described herein. In particular, the aerosol generating material may be in the form of an aerosol generating material sheet. The aerosol generating material sheet may be any aerosol generating material sheet described herein. Alternatively, one or more of the outer packaging, the first planar outer layer, and the second planar outer layer may not include any aerosol generating material, particularly in embodiments comprising an aerosol generating matrix layer, a first aerosol generating matrix layer, a second aerosol generating matrix layer, or an aerosol generating matrix positioned within a cavity. One or more of the outer packaging, the first planar outer layer, and the second planar outer layer may be substantially nicotine-free.

[0192] One or more of the outer packaging material, the first planar outer layer, and the second planar outer layer may have a thickness greater than or equal to 25 micrometers, greater than or equal to 30 micrometers, greater than or equal to 35 micrometers, greater than or equal to 40 micrometers, or greater than or equal to 45 micrometers.

[0193] One or more of the outer packaging, the first planar outer layer, and the second planar outer layer may have a thickness of less than or equal to 55 micrometers, less than or equal to 50 micrometers, less than or equal to 45 micrometers, less than or equal to 40 micrometers, or less than or equal to 35 micrometers.

[0194] One or more of the outer packaging, the first planar outer layer, and the second planar outer layer may have a thickness between 25 micrometers and 55 micrometers, between 25 micrometers and 45 micrometers, or between 30 micrometers and 45 micrometers.

[0195] One or more of the outer packaging, the first planar outer layer, and the second planar outer layer may have a length substantially the same as the length of the frame. One or more of the outer packaging, the first planar outer layer, and the second planar outer layer may have a length substantially the same as the length of the aerosol-generating article.

[0196] One or more of the first and second outer plane layers may have a width substantially the same as the width of the frame. One or more of the first and second outer plane layers may have a width substantially the same as the width of the aerosol-generated article.

[0197] The cavity may have a thickness greater than or equal to 0.5 mm. The cavity may have a thickness greater than or equal to 1.5 mm. The cavity may have a thickness greater than or equal to 2.5 mm. The cavity may have a thickness greater than or equal to 3.5 mm.

[0198] The cavity may have a thickness of 4.5 mm or less. The cavity may have a thickness of 3.5 mm or less. The cavity may have a thickness of 2.5 mm or less. The cavity may have a thickness of 1.5 mm or less.

[0199] The cavity may have a thickness between 0.5 mm and 4.5 mm. The cavity may have a thickness between 1 mm and 4.5 mm. Preferably, the cavity may have a thickness between 2.8 mm and 3.3 mm.

[0200] The cavity may have a length greater than or equal to 14 mm. The cavity may have a length greater than or equal to 18 mm. The cavity may have a length greater than or equal to 22 mm. The cavity may have a length greater than or equal to 30 mm. The cavity may have a length greater than or equal to 38 mm.

[0201] The cavity may have a length of 40 mm or less. The cavity may have a length of 34 mm or less. The cavity may have a length of 28 mm or less. The cavity may have a length of 22 mm or less. The cavity may have a length of 18 mm or less.

[0202] The cavity can have a length between 14 mm and 40 mm. The cavity can have a length between 14 mm and 34 mm. The cavity can have a length between 24 mm and 28 mm.

[0203] The cavity may have a width greater than or equal to 4.5 mm. The cavity may have a width greater than or equal to 7 mm. The cavity may have a width greater than or equal to 11 mm.

[0204] The cavity may have a width of 13 mm or less. The cavity may have a width of 11 mm or less. The cavity may have a width of 7 mm or less. The cavity may have a width of 5 mm or less.

[0205] The cavity may have a width between 4.5 mm and 13 mm. The cavity may have a width between 7 mm and 10 mm. The cavity may have a width between 7.5 mm and 8.5 mm.

[0206] The cavity may have a length between 14 mm and 40 mm, a width between 4.5 mm and 13 mm, and a thickness between 0.5 mm and 4.5 mm.

[0207] Preferably, the cavity may have a length between 20 mm and 30 mm, a width between 7 mm and 10 mm, and a thickness between 2.5 mm and 4 mm.

[0208] Most preferably, the cavity may have a length of 26 mm, a width of 8 mm, and a thickness of 3.1 mm.

[0209] The cavity may have a volume greater than or equal to 30 cubic millimeters, greater than or equal to 100 cubic millimeters, greater than or equal to 300 cubic millimeters, greater than or equal to 500 cubic millimeters, greater than or equal to 700 cubic millimeters, greater than or equal to 900 cubic millimeters, greater than or equal to 1000 cubic millimeters, greater than or equal to 2000 cubic millimeters, or greater than or equal to 30 cubic millimeters.

[0210] The cavity may have a volume of less than or equal to 3500 cubic millimeters, less than or equal to 2500 cubic millimeters, less than or equal to 1500 cubic millimeters, less than or equal to 1000 cubic millimeters, less than or equal to 800 cubic millimeters, less than or equal to 600 cubic millimeters, less than or equal to 500 cubic millimeters, less than or equal to 400 cubic millimeters, or less than or equal to 300 cubic millimeters.

[0211] The cavity may have a volume between 30 cubic millimeters and 3500 cubic millimeters. The cavity may have a volume between 30 cubic millimeters and 2500 cubic millimeters. The cavity may have a volume between 100 cubic millimeters and 1500 cubic millimeters. The cavity may have a volume between 100 cubic millimeters and 1000 cubic millimeters.

[0212] The cavity can be essentially empty.

[0213] One or more aerosol generating matrices may include an aerosol generating matrix positioned within a cavity. The aerosol generating matrix positioned within the cavity may fill the cavity.

[0214] The aerosol-generating matrix positioned within the cavity may contain aerosol-generating materials. These aerosol-generating materials can be any aerosol-generating materials described herein. For example, the aerosol-generating material may be in the form of shredded aerosol-generating materials.

[0215] Aerosol-generating materials can be in the form of aerosol-generating material sheets. Aerosol-generating material sheets can be any aerosol-generating material sheet described herein. For example, an aerosol-generating material sheet can be a homogenized tobacco material sheet.

[0216] Aerosol-generating material sheets can extend the entire length of the cavity. Aerosol-generating material sheets can extend the entire width of the cavity.

[0217] Aerosol generating material sheets can be aggregated aerosol generating material sheets. That is, aerosol generating material sheets can be wound, folded, or otherwise compressed or contracted substantially perpendicular to the transverse direction of the aerosol generating article.

[0218] The aerosol generating material sheet can be a rolled aerosol generating material sheet. The aerosol generating material sheet can be a corrugated aerosol generating material sheet. A rolled or corrugated aerosol generating material sheet may include multiple parallel corrugations. For example, a rolled aerosol generating material sheet may include multiple substantially parallel peaks and valleys.

[0219] Multiple parallel ripples can be defined by a ripple profile, which can be sinusoidal, triangular, rectangular, trapezoidal, circular, or parabolic.

[0220] Multiple parallel corrugations can define or form multiple channels between the aerosol generating material sheet and one or more walls of the cavity. These multiple channels can be longitudinally extending channels. They can also be laterally extending channels. The multiple channels can define or form at least a portion of an airflow passage extending between the air inlet and air outlet of the aerosol generating article.

[0221] Aerosol-generating materials may contain one or more organic materials, such as tobacco, peppermint, tea, and clove. Aerosol-generating materials may include one or more of the following: herbaceous plant leaves, tobacco leaves, fragments of tobacco ribs, reconstituted tobacco, homogenized tobacco such as cast leaves, extruded tobacco, expanded tobacco, aerosol-generating films, and gel compositions.

[0222] Aerosol-generating materials can be in the form of shredded aerosol-generating materials. Shredded aerosol-generating materials can include one or more of the following: strips and strands of aerosol-generating materials, such as strips and strands of tobacco or homogenized tobacco material. Shredded aerosol-generating materials can also be in the form of shredded homogenized tobacco material sheets.

[0223] Aerosol-generating materials can be shredded fillers. Specifically, aerosol-generating materials can be tobacco shredded fillers. As used herein, the term "shredded filler" is used to describe blends of shredded plant material, such as tobacco plant material, particularly including one or more of leaves, processed stems and ribs, and homogenized plant material.

[0224] Aerosol-generating materials can be in the form of aerosol-generating material sheets. As used herein, the term "sheet" describes a layered element whose width and length are significantly greater than its thickness. Aerosol-generating material sheets can be plant material sheets. Aerosol-generating material sheets can be tobacco material sheets. Aerosol-generating material sheets can be homogenized tobacco material sheets, such as cast leaf materials.

[0225] Aerosol-generating materials may include one or more aerosol forming agents. Suitable aerosol forming agents are well known in the art and include, but are not limited to, one or more aerosol forming agents selected from: polyols, such as propylene glycol, polyethylene glycol, triethylene glycol, 1,3-butanediol, and glycerol; esters of polyols, such as mono-, di-, or triacetic acid esters; and aliphatic esters of mono-, di-, or polycarboxylic acids, such as dimethyl dodecanoate and dimethyl tetradecanoate. Particularly preferred aerosol forming agents are one or both of glycerol and propylene glycol, or a combination of glycerol and propylene glycol. The aerosol forming agent may consist of glycerol or propylene glycol, or a combination of glycerol and propylene glycol.

[0226] Aerosol-generating materials may have an aerosol forming agent content of 1%, 2%, 5%, 10%, or 15% by weight on a dry weight basis. Aerosol-generating materials may also have an aerosol forming agent content of 15% or more by weight on a dry weight basis, for example, 20% or more by weight on a dry weight basis, or 25% or more by weight on a dry weight basis, or 30% or more by weight on a dry weight basis, or 40% or more by weight on a dry weight basis, or 50% or more by weight on a dry weight basis.

[0227] Aerosol generating materials may have an aerosol forming agent content of less than or equal to 30% by weight, less than or equal to 25% by weight, or less than or equal to 20% by weight on a dry weight basis.

[0228] The aerosol generating material may have an aerosol forming agent content of between 5% and 30% by weight, between 5% and 25% by weight, or between 5% and 20% by weight on a dry weight basis.

[0229] The aerosol generating material may have an aerosol forming agent content of between 10% and 30% by weight, between 10% and 25% by weight, or between 10% and 20% by weight on a dry weight basis.

[0230] Aerosol-generating materials may contain nicotine. Aerosol-generating materials may contain natural nicotine, synthetic nicotine, or a combination of natural and synthetic nicotine.

[0231] The aerosol-generating material may contain at least 0.5% by weight of nicotine, at least 1% by weight of nicotine, at least 1.5% by weight of nicotine, or at least 2% by weight of nicotine. That is, the aerosol-generating material may have a nicotine content of at least 0.5% by weight, at least 1% by weight, at least 1.5% by weight, or at least 2% by weight.

[0232] The aerosol-generating material can be in the form of multiple beads. The multiple beads can have an average particle size between 0.1 mm and 4 mm, for example, between 0.5 mm and 4 mm.

[0233] The term "bead" refers to discrete solid particles formed from an aerosol-generating matrix. Beads can have a rounded, typically spherical, form. Other terms may be used to define the matrix, such as "particle."

[0234] Offering aerosol-generating material as multiple beads offers several advantages. Beads are easier to handle compared to other aerosol-forming matrices such as fine powders or filament fillers. Beads flow easily and can therefore reliably and consistently fill the cavities of aerosol-generating articles during manufacturing. This allows for a consistent and reproducible loading of the aerosol-forming matrix into each article during manufacturing. Beads can also be handled cleaner than powders and filament fillers, which can lead to dust in the plant and potential leakage from aerosol-generating articles during transport or use. By selecting beads with appropriate bead size and particle size distribution, airflow through the cavities of aerosol-generating articles can be controlled more reproducibly than with filament filler matrices.

[0235] When the particle is not perfectly spherical, but the diameter of the particle is mentioned, the term "diameter" can refer to the maximum size of the particle. Alternatively, the term "diameter" can refer to the diameter of a perfectly spherical particle having the same volume as an imperfectly spherical particle.

[0236] As used herein, the term "average particle size" can refer to index average particle size. Other methods for determining average particle size are known. Therefore, average particle size can be, for example, volume average particle size.

[0237] Aerosol generating materials can be in the form of aerosol generating material encapsulations, which include packaging that at least partially surrounds the aerosol generating material.

[0238] Encapsulations of aerosol-generating materials can occupy 15% to 100% of the cavity's internal volume. Encapsulations of aerosol-generating materials can occupy 30% to 100% of the cavity's internal volume. Encapsulations of aerosol-generating materials can occupy 50% to 100% of the cavity's internal volume. Encapsulations of aerosol-generating materials can occupy 50% to 80% of the cavity's internal volume. Encapsulations of aerosol-generating materials can occupy 50% to 70% of the cavity's internal volume.

[0239] Aerosol-generating articles may include an air inlet and an air outlet. Aerosol-generating articles may include an airflow passage extending between the air inlet and the air outlet. The airflow passage may extend through a cavity between the air inlet and the air outlet. The airflow passage may extend from the air inlet to the air outlet. The airflow passage may extend through a cavity from the air inlet to the air outlet. The airflow passage may extend through a converging section of the cavity from the air inlet to the air outlet. The airflow passage may extend through both a parallel section and a converging section of the cavity from the air inlet to the air outlet.

[0240] An air inlet may be defined by the front wall of the aerosol-generating article. An air inlet may be defined by a frame and may extend through the frame. An air inlet may be defined by the peripheral wall of the frame. An air inlet may extend through the peripheral wall of the frame. An air inlet may be defined by the front wall of the frame or the front wall of the peripheral wall of the frame. An air inlet may extend through the front wall of the frame or the front wall of the peripheral wall of the frame. An air outlet may be defined by the rear wall of the aerosol-generating article. An air outlet may be defined by the frame and may extend through the frame. An air outlet may be defined by the peripheral wall of the frame. An outlet may extend through the peripheral wall of the frame. An air outlet may be defined by the rear wall of the frame or the rear wall of the peripheral wall of the frame.

[0241] The air inlet can have a circular, oval, square, or rectangular cross-section. The air outlet can have a circular, oval, square, or rectangular cross-section.

[0242] An air inlet may be defined by and extend through the outer surface of a first plane. An air inlet may be defined by an outer packaging material and extend through it. An air inlet may be defined by the outer packaging material and an aerosol generation matrix layer and extend through both. An air inlet may be defined by the outer packaging material and a first aerosol generation matrix layer and extend through both. An air inlet may be defined by the outer layer of a first plane and an aerosol generation matrix layer and extend through both. An air inlet may be defined by the outer layer of a first plane and a first aerosol generation matrix layer and extend through both.

[0243] An air inlet may be defined by and extend through the outer surface of the second plane. An air inlet may be defined by an outer packaging layer and a second aerosol generating matrix layer, and extend through both. An air inlet may be defined by the outer surface of the second plane and the aerosol generating matrix layer, and extend through both. An air inlet may be defined by the outer surface of the second plane and the second aerosol generating matrix layer, and extend through both.

[0244] An air outlet may be defined by and extend through the outer surface of a first plane. An air outlet may be defined by an outer packaging material and extend through it. An air outlet may be defined by the outer packaging material and an aerosol generation matrix layer and extend through both. An air outlet may be defined by the outer packaging material and a first aerosol generation matrix layer and extend through both. An air outlet may be defined by the outer surface of a first plane and an aerosol generation matrix layer and extend through both. An air outlet may be defined by the outer surface of a first plane and a first aerosol generation matrix layer and extend through both.

[0245] An air outlet may be defined by and extend through the outer surface of the second plane. An air outlet may be defined by an outer packaging layer and a second aerosol generating matrix layer, and extend through both. An air outlet may be defined by the outer surface of the second plane and the aerosol generating matrix layer, and extend through both. An air outlet may be defined by the outer surface of the second plane and the second aerosol generating matrix layer, and extend through both.

[0246] One or both of the air inlet and air outlet may have an equivalent diameter greater than or equal to 0.1 mm, greater than or equal to 0.4 mm, greater than or equal to 0.7 mm, or greater than or equal to 1.0 mm.

[0247] One or both of the air inlet and air outlet may have an equivalent diameter of less than or equal to 3 mm, less than or equal to 2.7 mm, less than or equal to 2.4 mm, or less than or equal to 2.1 mm. The air inlet may have an equivalent diameter of less than or equal to 2.7 mm, less than or equal to 1.8 mm, or less than or equal to 1.5 mm.

[0248] One or both of the air inlet and air outlet may have an equivalent diameter between 0.1 mm and 3 mm, between 0.1 mm and 2.4 mm, between 0.4 mm and 2.1 mm, between 0.4 mm and 1.8 mm, between 0.7 mm and 1.5 mm, or between 1.0 mm and 1.5 mm.

[0249] The air inlet may have a width smaller than the width of the cavity. The air outlet may have a width smaller than the width of the cavity. The air inlet may have a thickness smaller than the thickness of the cavity. The air outlet may have a thickness smaller than the thickness of the cavity.

[0250] One or both of the air inlet and air outlet may have a width between 0.3 mm and 3 mm or between 0.5 mm and 2 mm.

[0251] One or both of the air inlet and air outlet may have a thickness between 0.3 mm and 3 mm or between 0.5 mm and 2 mm.

[0252] Preferably, the air inlet may have a width between 0.3 mm and 3 mm and a thickness between 0.3 mm and 3 mm.

[0253] Preferably, the air outlet may have a width between 0.3 mm and 3 mm and a thickness between 0.3 mm and 3 mm.

[0254] Advantageously, an aerosol generating article having an air outlet or air inlet with a width between 0.3 mm and 3 mm and a thickness between 0.3 mm and 3 mm can provide a relatively large inlet or outlet opening, while allowing for improved retention of the aerosol generating matrix within the aerosol generating article. Improved retention of the aerosol generating matrix within the aerosol generating article reduces the risk of the aerosol generating matrix falling out of the aerosol generating article.

[0255] The ratio of the width to the thickness of the air inlet can be between 0.33 and 3. The ratio of the width to the thickness of the air inlet can be between 0.5 and 1.5. The ratio of the width to the thickness of the air inlet can be between 0.75 and 1.25.

[0256] The ratio of the width to the thickness of the air outlet can be between 0.33 and 3. The ratio can be between 0.5 and 1.5. The ratio can be between 0.75 and 1.25.

[0257] Aerosol-generating articles may include multiple air inlets. One or each of the air inlets may have one or more of the features of air inlets described herein.

[0258] Aerosol-generating articles may include multiple air outlets. One or each of the air outlets may have one or more of the features of air outlets described herein.

[0259] Aerosol generating articles may include a filter element positioned downstream of the aerosol forming matrix. Aerosol generating articles may include a filter element positioned downstream of a cavity. Aerosol generating articles may include a filter element at least partially positioned within an air outlet. Aerosol generating articles may include a filter element positioned within a cavity and potentially at a downstream end of the cavity.

[0260] Aerosol generating articles may include a filter element positioned upstream of the aerosol forming matrix. Aerosol generating articles may include a filter element positioned upstream of a cavity. Aerosol generating articles may include a filter element at least partially positioned within an air inlet. Aerosol generating articles may include a filter element positioned within a cavity and potentially positioned at the upstream end of the cavity.

[0261] Filter elements may include one or more segments of fibrous filter material. Suitable fibrous filter material will be known to those skilled in the art. Filter elements may contain cellulose acetate.

[0262] The ratio between the length and thickness of the aerosol-generated article, and the ratio between the width and thickness of the aerosol-generated article, can be greater than 2:1, greater than 5:1, greater than 10:1, greater than 12:1, or greater than 15:1.

[0263] The ratio between the length and thickness of the aerosol-generated article, and the ratio between the width and thickness of the aerosol-generated article, can be less than 15:1, less than 12:1, less than 10:1, less than 5:1, or less than 2.5:1.

[0264] The ratio between the length and thickness of the aerosol-generated article, and the ratio between the width and thickness of the aerosol-generated article, can be between 2:1 and 15:1, between 2:1 and 12:1, between 2:1 and 10:1, or between 5:1 and 10:1.

[0265] The ratio between the length and width of aerosol-generated products can be greater than 1:1, greater than 2:1, greater than 3:1, greater than 4:1, or greater than 5:1.

[0266] The ratio between the length and width of the aerosol-generated product can be less than 10:1, less than 8:1, less than 5:1, less than 4:1, less than 3:1, or less than 2:1.

[0267] The ratio between the length and width of the aerosol-generated article can be between 1:1 and 10:1, between 1:1 and 5:1, between 1:1 and 4:1, between 1:1 and 3:1, between 2:1 and 4:1, or between 2:1 and 3:1.

[0268] Aerosol-generated products may have a length greater than or equal to 15 mm, greater than or equal to 20 mm, greater than or equal to 25 mm, greater than or equal to 30 mm, greater than or equal to 35 mm, or greater than or equal to 40 mm.

[0269] Aerosol-generated articles may have a length of less than or equal to 45 mm, less than or equal to 40 mm, less than or equal to 35 mm, or less than or equal to 30 mm.

[0270] Aerosol-generated articles may have a length between 15 mm and 45 mm, between 20 mm and 40 mm, between 20 mm and 35 mm, or between 25 mm and 30 mm.

[0271] Aerosol-generated articles may have a width of 3 mm or more, 5 mm or more, 7.5 mm or more, 9 mm or more, 11 mm or more, or 13 mm or more.

[0272] Aerosol-generated articles may have a width of less than or equal to 17 mm, less than or equal to 15 mm, less than or equal to 12.5 mm, less than or equal to 11 mm, or less than or equal to 9 mm.

[0273] Aerosol-generated articles may have a width between 3 mm and 17 mm, between 5 mm and 15 mm, between 7.5 mm and 12.5 mm, or between 9 mm and 11 mm.

[0274] The width of the aerosol-generating article may be constant along at least 80%, at least 90%, or at least 95% of the length of the aerosol-generating article. Alternatively, the width of the aerosol-generating article may be constant along substantially the entire length of the aerosol-generating article.

[0275] Aerosol-generated products may have a thickness of 1 mm or more, 1.5 mm or more, 2 mm or more, 2.5 mm or more, 3 mm or more, 3.5 mm or more, 4 mm or more, or 4.5 mm or more.

[0276] Aerosol-generated products may have a thickness of less than or equal to 5.5 mm, less than or equal to 5 mm, less than or equal to 4.5 mm, less than or equal to 4 mm, less than or equal to 3.5 mm, less than or equal to 3 mm, less than or equal to 2.5 mm, or less than or equal to 2 mm.

[0277] Aerosol-generated articles may have a thickness between 1 mm and 5 mm, between 1.5 mm and 5 mm, between 2 mm and 4.5 mm, between 2.5 mm and 4 mm, or between 3 mm and 3.5 mm.

[0278] For example, aerosol-generated articles may have a length between 15 mm and 45 mm, a width between 5 mm and 15 mm, and a thickness between 1 mm and 5 mm.

[0279] According to this disclosure, an aerosol generating apparatus is provided for receiving an aerosol generating article as disclosed herein. The aerosol generating apparatus includes a cavity sized to receive at least a portion of the aerosol generating article. The aerosol generating apparatus includes a heater or heating device, a power source for supplying power to the heater or heating device, and a controller for controlling the power supply to the heater or heating device. The aerosol generating apparatus is configured to heat at least one of one or more aerosol generating matrices to form an aerosol, such as an inhalable aerosol. The aerosol generating apparatus may be configured to heat each of one or more aerosol generating matrices to form an aerosol, such as an inhalable aerosol.

[0280] According to this disclosure, an aerosol generation system includes an aerosol generation apparatus as disclosed herein and an aerosol generation article as disclosed herein. The system may include a plurality of such articles for use with the aerosol generation apparatus.

[0281] As used herein, the term "aerosol-generating article" refers to an article that includes an aerosol-generating matrix. The article may be heated during use to generate an inhalable aerosol and deliver it to the consumer.

[0282] As used herein, the term "aerosol-generating matrix" refers to a matrix that can release volatile compounds (e.g., compounds that are cooled and condensed during use to generate aerosols) when heated.

[0283] As used herein, the term "aerosol generating apparatus" refers to an apparatus that, in use, interacts with (e.g., heating) an aerosol generating matrix of an aerosol generating article to generate an aerosol.

[0284] As used herein, the term "plane" refers to a feature that is typically formed in a single Euclidean plane and does not surround or otherwise conform to fit a curved or other non-planar shape. A planar surface may extend in two dimensions within a single Euclidean plane. The extension of a planar object in the two dimensions within a single Euclidean plane may be significantly greater than its extension in a third dimension perpendicular to that plane. More specifically, the extension of a planar object in the first dimension and the second dimension perpendicular to the first dimension may be at least two, five, or ten times greater than its extension in the third dimension perpendicular to the first and second dimensions.

[0285] As used in this article, the term "lateral" refers to the direction extending between the outer surfaces of the first and second planes. The lateral direction can also be referred to as the "z-direction".

[0286] As used herein, the term "longitudinal" refers to a direction perpendicular to the transverse direction. For example, the direction between the front and rear walls of an aerosol-generating article. The longitudinal direction can also be referred to as the "x-direction".

[0287] As used herein, the term "lateral" refers to a direction perpendicular to both the transverse and longitudinal directions. For example, the direction from the first sidewall to the second sidewall of an aerosol-generating article. The lateral direction can also be referred to as the "y-direction."

[0288] As used herein, the term “thickness” refers to the maximum dimension in the transverse direction of an aerosol-generating article or a component of an aerosol-generating article.

[0289] As used herein, the term “length” refers to the maximum dimension of an aerosol-generating article or a component of an aerosol-generating article in the longitudinal direction.

[0290] As used herein, the term “width” refers to the maximum dimension of an aerosol-generating article or a component of an aerosol-generating article in the lateral direction.

[0291] As used herein, the terms “upstream” and “downstream” refer to the relative position of a component or portion of an aerosol-generating article with respect to the direction in which air or aerosol is transported through the aerosol-generating article during use. The “upstream end” of an aerosol-generating article, a component of an aerosol-generating article, or a portion of a component of an aerosol-generating article may be referred to as the “first end” or “far end” of the aerosol-generating article, a component of an aerosol-generating article, or a portion of a component of an aerosol-generating article, respectively. The “downstream end” of an aerosol-generating article, a component of an aerosol-generating article, or a portion of a component of an aerosol-generating article may be referred to as the “second end” or “proximal end” of the aerosol-generating article, a component of an aerosol-generating article, or a portion of a component of an aerosol-generating article, respectively.

[0292] As used in this article, the term "bulk density" can refer to the total weight of the aerosol-generating matrix divided by the total volume of the aerosol-generating matrix.

[0293] As used herein, the term "aerosol forming agent" can refer to any suitable known compound or mixture of compounds that promotes the formation of aerosols in use. Aerosols can be dense and stable. Aerosols can be substantially heat-resistant and degrade at the operating temperatures of the aerosol-generating matrix or aerosol-generating article.

[0294] As used herein, unless otherwise stated, the term "aerosol forming agent content" may refer to the aerosol forming agent content as a percentage on a dry weight basis.

[0295] As used in this article, a "sensor" refers to a conductive element that heats up when subjected to a changing magnetic field. This may be a result of eddy currents and / or hysteresis losses induced in the sensor element.

[0296] As used in this article, the term "hydrophobicity" refers to the water-repellent properties of a surface. A useful way to determine this is by measuring the water contact angle. The water contact angle is the angle through which the liquid passes when a liquid / vapor interface encounters a solid surface, as conventionally measured. It quantifies the wettability of a solid surface by a liquid via Young's equation.

[0297] As used herein, the term “equivalent diameter” of an opening or orifice is used to refer to the diameter of a circular opening or orifice having the same cross-sectional area as the opening or orifice.

[0298] The invention is defined in the claims. However, a non-exhaustive list of non-limiting examples is provided below. Any one or more features of these examples may be combined with any one or more features of another example, embodiment, or aspect described herein.

[0299] EX1: An aerosol generating article for use with an aerosol generating apparatus to generate an aerosol, the aerosol generating article having a length extending in the x direction, a width extending in the y direction, and a thickness extending in the z direction, the aerosol generating article comprising: one or more aerosol generating matrices, and a cavity extending in the x direction between a first end of the cavity and a second end of the cavity.

[0300] EX2: An aerosol-generated article based on EX1, comprising a first planar outer surface and a second planar outer surface.

[0301] EX3: An aerosol-generated article according to EX2, wherein the first planar outer surface extends in the x / y plane, and wherein the second planar outer surface extends in the x / y plane.

[0302] EX4: An aerosol-generating article according to any one of EX1 to EX3, wherein the cavity includes a converging section extending in the x direction between a first end of the converging section and a second end of the converging section.

[0303] EX5: An aerosol-generated article according to EX4, wherein the width of the converging section decreases from the first end to the second end of the converging section along the length of the converging section.

[0304] EX6: An aerosol-generated article based on EX4 or EX5, wherein the width of the converging section decreases continuously along the entire length of the converging section.

[0305] EX7: An aerosol-generating article according to any one of EX4 to EX6, wherein the width of the converging section at the second end of the converging section is at least 30% of the width of the converging section at the first end of the converging section.

[0306] EX8: An aerosol-generating article according to any one of EX4 to EX7, wherein the width of the converging section at the second end of the converging section is less than or equal to 90% of the width of the converging section.

[0307] EX9: An aerosol-generating article according to any one of EX4 to EX8, wherein the difference in width between the first and second ends of the converging section is less than or equal to 6 mm.

[0308] EX10: An aerosol-generating article according to any one of EX4 to EX9, wherein the difference in width between the converging section at the first end and the second end of the converging section is at least 2 mm.

[0309] EX11: An aerosol-generating article according to any one of EX4 to EX10, wherein the converging section extends along at least 30% of the length of the cavity.

[0310] EX12: An aerosol-generating article according to any one of EX4 to EX11, wherein the converging section has a length less than or equal to 80% of the length of the cavity.

[0311] EX13: An aerosol-generating article according to any one of EX4 to EX12, wherein the length of the converging section is greater than the width of the converging section at the first end of the converging section.

[0312] EX14: An aerosol-generating article according to any one of EX4 to EX13, wherein the length of the converging section is at least 1.2 times the width of the converging section at a first end of the converging section.

[0313] EX15: An aerosol-generating article according to any one of EX4 to EX14, wherein the difference between the width of the converging section at the first end of the converging section and the width of the converging section at the second end of the converging section, divided by the length of the converging section, is less than or equal to 1 mm / mm.

[0314] EX16: An aerosol-generating article according to any one of EX4 to EX15, wherein the difference between the width of the converging section at the first end of the converging section and the width of the converging section at the second end of the converging section, divided by the length of the converging section, is greater than or equal to 0.1 mm / mm.

[0315] EX17: An aerosol-generating article according to any one of EX4 to EX15, wherein the converging section of the cavity is substantially empty.

[0316] EX18: An aerosol-generating article according to any one of EX1 to EX17, wherein the aerosol-generating article is a flat or planar aerosol-generating article.

[0317] EX19: An aerosol-generated article according to any one of EX2 to EX18, comprising a frame located between the first planar outer surface and the second planar outer surface.

[0318] EX20: An aerosol-generated article according to EX19, wherein the frame includes a peripheral wall that defines or defines at least a portion of the cavity.

[0319] EX21: An aerosol-generated article according to EX20, wherein the peripheral wall includes a front wall, a rear wall, and one or more side walls extending between the front wall and the rear wall.

[0320] EX22: An aerosol-generated article according to EX20 or EX21, wherein the peripheral wall includes a first converging sidewall section and a second converging sidewall section that define at least a portion of the length of a converging section of the cavity.

[0321] EX23: An aerosol-generated article according to EX22, wherein the width of one or both of the first converging sidewall section and the second converging sidewall section increases along the x-direction.

[0322] EX24: An aerosol-generated article according to EX22 or EX23, wherein the inner surfaces of the first converging sidewall section and the inner surfaces of the second converging sidewall section form an angle of less than or equal to 35 degrees relative to each other.

[0323] EX25: An aerosol-generating article according to any one of EX22 to EX24, wherein the inner surfaces of the first converging sidewall section and the inner surfaces of the second converging sidewall section form an angle of 5 degrees or more relative to each other.

[0324] EX26: An aerosol-generating article according to any one of EX22 to EX25, wherein the outer surfaces of both the first converging sidewall section and the second converging sidewall section may be parallel to the x-direction.

[0325] EX27: An aerosol-generating article according to any one of EX4 to EX26, wherein the converging section is positioned toward or at the second or downstream end of the cavity.

[0326] EX28: An aerosol-generated article according to any one of EX1 to EX27, wherein the cavity includes a parallel section.

[0327] EX29: An aerosol-generated article according to EX28, wherein the parallel section is positioned toward or located at the first or upstream end of the cavity.

[0328] EX30: An aerosol-generated article according to EX28 or EX29, wherein the parallel section is located upstream of the converging section.

[0329] EX31: An aerosol-generated article according to any one of EX28 to EX30, wherein the width of the parallel section is equal to the width of the converging section at the first end of the converging section.

[0330] EX32: An aerosol-generated article according to any one of EX28 to EX31, wherein the parallel section has a length greater than or equal to 20% of the length of the cavity.

[0331] EX33: An aerosol-generated article according to any one of EX28 to EX32, wherein the parallel section has a length less than or equal to 70% of the length of the cavity.

[0332] EX34: An aerosol generating article according to any one of EX28 to EX33, wherein at least one of the one or more aerosol generating matrices is located in a parallel section of the cavity.

[0333] EX35: An aerosol-generated article according to any one of EX20 to EX34, wherein the peripheral wall is formed of paper, paperboard or cardboard.

[0334] EX36: An aerosol-generating article according to any one of EX1 to EX35, wherein the aerosol-generating article or the frame has a laminated structure.

[0335] EX37: An aerosol generating article according to any one of EX1 to EX36, wherein the one or more aerosol generating matrices comprise an aerosol generating material sheet defining at least a portion of the cavity.

[0336] EX38: An aerosol-generating article according to any one of EX2 to EX37, including an outer packaging, said outer packaging defining or forming at least one of the first planar outer surface and the second planar outer surface.

[0337] EX39: An aerosol generating article according to any one of EX1 to EX38, wherein each of the one or more aerosol generating matrices contains at least 5% by weight of an aerosol forming agent on a dry weight basis.

[0338] EX40: An aerosol-generating article according to any one of EX1 to EX39, including an air inlet and an air outlet.

[0339] EX41: An aerosol-generating article according to EX40, comprising an airflow passage extending through the cavity between the air inlet and the air outlet.

[0340] EX42: An aerosol-generating article according to EX40 or EX41, wherein the air inlet is defined by the frame, such as by the peripheral wall of the frame, such as by the front wall.

[0341] EX43: An aerosol generating article according to any one of EX45 to EX47, wherein the air outlet is defined by the frame, such as by the peripheral wall of the frame, such as by the rear wall.

[0342] EX44: An aerosol-generating article according to any one of EX40 to EX43, comprising an airflow path or passage extending from the air inlet to the air outlet through the cavity, such as a parallel section and a converging section through the cavity.

[0343] EX45: An aerosol generation system comprising: an aerosol generation article according to any one of EX1 to EX44, and an aerosol generation apparatus configured to heat at least one aerosol generation matrix of one or more aerosol generation matrices of the aerosol generation article.

[0344] EX46: An aerosol generation system according to EX45, wherein the aerosol generation apparatus includes a cavity sized to receive at least a portion of the aerosol-generated article, a heater, a power source for supplying power to the heater, and a controller for controlling the power supply to the heater. Attached Figure Description

[0345] The examples will now be described further with reference to the accompanying drawings, in which:

[0346] Figure 1 A perspective view of an aerosol-generated article according to the present disclosure is shown;

[0347] Figure 2 It shows Figure 1 An exploded perspective view of the aerosol-generated product;

[0348] Figure 3 An exploded perspective view of an aerosol-generated article according to the present disclosure is shown;

[0349] Figure 4 A perspective view of an aerosol-generated article according to the present disclosure is shown;

[0350] Figure 5 A perspective view of an aerosol-generated article according to the present disclosure is shown;

[0351] Figure 6 An exploded perspective view of an aerosol-generated article according to the present disclosure is shown;

[0352] Figure 7 A perspective view of an aerosol-generated article according to the present disclosure is shown;

[0353] Figure 8 An exploded perspective view of an aerosol-generated article according to the present disclosure is shown;

[0354] Figure 9 A schematic cross-sectional view of an aerosol generating apparatus according to the present disclosure is shown; and

[0355] Figure 10 A schematic cross-sectional view of the aerosol generation system is shown, in which... Figure 8 The aerosol generating apparatus is combined with the aerosol generating article of this disclosure. Detailed Implementation

[0356] Figure 1 An aerosol-generating article 10 is shown, comprising a first outer plane layer 24 forming a first outer plane surface 21, a second outer plane layer 25 forming a second outer plane surface 22, and a frame 50 positioned between the first outer plane layer 24 and the second outer plane layer 25. Both the first outer plane layer 24 and the second outer plane layer 25 comprise an aerosol-generating matrix containing an aerosol-generating material, i.e., tobacco. However, it should be understood that in some embodiments, only one of the first outer plane layer 24 and the second outer plane layer 25 may comprise an aerosol-generating matrix. Alternatively or additionally, the aerosol-generating matrix may be positioned elsewhere within the aerosol-generating article 10.

[0357] The aerosol generating article 10 has a length extending in the x-direction, a width extending in the y-direction, and a thickness extending in the z-direction. The aerosol generating article 10 has a length of 30 mm, a width of 10 mm, and a thickness of 3.1 mm.

[0358] The aerosol-generating article 10 is a substantially flat aerosol-generating article or a substantially planar aerosol-generating article. Specifically, the thickness of the aerosol-generating article 10 is less than 50% of both its length and width. The aerosol-generating article 10 has a generally rectangular cuboid shape and a laminated structure formed by a first planar outer layer 24, a frame 50, and a second planar outer layer 25. (The following text is about...) Figure 2In more detail, the first outer plane layer 24, the frame 50, and the second outer plane layer 25 are bonded together with an adhesive, particularly guar gum.

[0359] Figure 2 It shows Figure 1 An exploded view of the aerosol-generated product 10.

[0360] Frame 50 has a length of 30 mm, a width of 10 mm, and a thickness of 2.7 mm. Frame 50 is made of cardboard and defines a frame opening extending through the thickness of frame 50. The frame opening at least partially forms cavity 30. Cavity 30 has a length of 26 mm, a width of 6 mm, and a thickness of 2.7 mm. Cavity 30 is substantially empty.

[0361] The frame 50 has an inner frame surface 52 extending in the z-direction or lateral direction between a first planar outer surface 21 and a second planar outer surface 22. The inner frame surface 52 defines an outer wall of a cavity. The frame 50 has an outer frame surface 53 extending in the z-direction or lateral direction between the first planar outer surface 21 and the second planar outer surface 22. The outer frame surface 53 at least partially defines one or more outer surfaces of an aerosol-generating article, such as a front wall 13 and a rear wall 14.

[0362] The frame 50 includes a peripheral wall 51 that defines the cavity 30. More specifically, the peripheral wall 51 is defined by an inner surface 52 and an outer surface 53 of the frame.

[0363] Cavity 30 includes a parallel section 31 and a converging section 32. The converging section 32 has a width that decreases from a first end to a second end.

[0364] The peripheral wall 51 includes a front wall 13 and a rear wall 14. A parallel section 31 extends from the front wall 13 to a converging section 32. The converging section 32 extends from the parallel section 31 to the rear wall 14. Thus, the converging section 32 is located downstream of the parallel section. During use of the aerosol generating article 10, air is drawn into the article through the air inlet 11 of the aerosol generating article 10, then through the parallel section 31 of the cavity 30, then through the converging section 32 of the cavity 30, and then out of the aerosol generating article 10 through the air outlet 12 of the aerosol generating article 10.

[0365] The peripheral wall 51 includes a first sidewall and an opposing second sidewall 62. The front wall 13, rear wall 14, first sidewall 61, and second sidewall together define the perimeter of the cavity. The first sidewall includes a first parallel sidewall portion 61 and a first converging sidewall portion 71. The first parallel sidewall portion 61 extends from the front wall 13 to a first end of the first converging sidewall portion 71. The first converging sidewall portion 71 extends from a second end of the first parallel sidewall portion 61 to the rear wall 14. The second sidewall includes a second parallel sidewall portion 62 and a second converging sidewall portion 72. The second parallel sidewall portion 62 extends from the front wall 13 to a first end of the second converging sidewall portion 72. The second converging sidewall portion 72 extends from a second end of the second parallel sidewall portion 71 to the rear wall 14.

[0366] Both the first converging sidewall portion 71 and the second converging sidewall portion 72 have a width that increases from the first end of the converging section 32 to the second end of the converging section 32. This can provide structural rigidity for the aerosol-generating article 10.

[0367] The outer surfaces of both the first converging sidewall portion 71 and the second converging sidewall portion 72 are parallel to the x-direction.

[0368] The converging section 32 has a length of 13 mm, a width of 6 mm at its first end, a width of 3 mm at its second end, and a thickness of 2.7 mm. Therefore, the length of the converging section 32 is greater than the width of the converging section 32 at its first end.

[0369] Parallel section 32 has a length of 13 mm, a constant width of 6 mm along the entire length of parallel section 32, and a thickness of 2.7 mm.

[0370] The first outer plane layer 24 and the second outer plane layer 25 have a thickness of 200 micrometers and are in physical contact with the frame 50. The first outer plane layer 24 and the second outer plane layer 25 are bonded to the frame with adhesive 15. The first outer plane layer 24 defines at least a portion of the cavity 30. The second outer plane layer 25 defines at least a portion of the cavity 30.

[0371] Air inlet 11 and air outlet 12 are defined by and extend through the peripheral wall 51 of frame 50. Air inlet 11 and air outlet 12 each have a rectangular cross-section, a width of 3 mm, and a thickness of 0.9 mm. An airflow passage extends through cavity 30 between air inlet 11 and air outlet 12.

[0372] Figure 3 It shows the relationship with Figure 1An exploded view of an aerosol-generating article similar to the one described in Figure 10, except that the first outer plane layer 24 and the second outer plane layer 25 do not include an aerosol-generating matrix. Instead, an aerosol-generating matrix 40 is positioned within the parallel section 31 of the cavity 30. The aerosol-generating matrix 40 comprises an aerosol-generating material in the form of tobacco shredded filler and has an aerosol forming agent content of 5% by weight (dry weight). The tobacco shredded filler can be encapsulated in packaging. As shown, the aerosol-generating matrix 40 fills the entire volume of the parallel section 31 of the cavity 30. Figure 3 In one example, the aerosol generating matrix 40 has a filling density of about 0.87, a density of about 0.3 g / cm³, and a mass of about 55 mg. In another example, the aerosol generating matrix 40 may have different filling densities, different densities, and different masses. For example, the aerosol generating matrix may have a filling density of 0.64, a density of 0.35 g / cm³, and a mass of about 47 mg.

[0373] The converging section 32 of cavity 30 is empty. In particular, the aerosol generating matrix 40 does not extend into the converging section 32 of cavity 30.

[0374] Figure 4 It shows the relationship with Figure 1 and Figure 3 Aerosol generating article 10 is similar to aerosol generating article 10, except that... Figure 4 The aerosol-generating article 10 includes an outer packaging 23 that defines a first planar outer surface 21 and a second planar outer surface 22 in place of the first planar outer layer 24 and the second planar outer layer 25.

[0375] Figure 5 It shows the relationship with Figure 1 Aerosol generating article 10 is similar to aerosol generating article 10, except that... Figure 5 The aerosol generating article 10 also includes a first aerosol generating matrix layer 41 and a second aerosol generating matrix layer 42. The first aerosol generating matrix layer 41 and the second aerosol generating matrix layer 42 are formed from aerosol generating material sheet. Specifically, the homogenized tobacco material sheet has an aerosol forming agent content of 5% by weight (dry weight). The first aerosol generating matrix layer 41 and the second aerosol generating matrix layer 42 each have a length equal to the length of the aerosol generating article 10, a width equal to the width of the aerosol generating article 10, and a thickness of 200 micrometers. That is, the aerosol generating article 10 has a length of 30 millimeters, a width of 10 millimeters, and a thickness of 3.5 millimeters.

[0376] The first aerosol generating matrix layer 41 and the second aerosol generating matrix layer 42 are in physical contact with the frame 50 and are bonded to the frame with adhesive 15. The first aerosol generating matrix layer 41 defines at least a portion of the cavity 30. The second aerosol generating layer 42 defines at least a portion of the cavity 30.

[0377] The first planar outer layer 24 is in physical contact with the first aerosol generating matrix layer 41 and is bonded together with adhesive 15. The second planar outer layer 25 is in physical contact with the second aerosol generating matrix layer 42 and is bonded together with adhesive 15.

[0378] Figure 6 It shows the relationship with Figure 5 An exploded view of aerosol generating article 10 similar to that of aerosol generating article 10, the difference being that the aerosol generating matrix 40 is as described above. Figure 3 The aerosol generating matrix 40 is positioned within the parallel section 31 of the cavity 30. The aerosol generating matrix 40 comprises an aerosol generating material in the form of tobacco shredded filler and has an aerosol forming agent content of 5% by weight (dry weight). As shown, the aerosol generating matrix 40 fills the entire volume of the parallel section 31 of the cavity 30.

[0379] Figure 7 It shows the relationship with Figure 5 Aerosol generating article 10 is similar to aerosol generating article 10, except that... Figure 7 The aerosol-generating article 10 includes an outer packaging 23 that defines a first planar outer surface 21 and a second planar outer surface 22 in place of the first planar outer layer 24 and the second planar outer layer 25.

[0380] Figure 8 It shows the relationship with Figure 3 This is a similar aerosol-generating article to the previous one, except that the aerosol-generating matrix 40 does not fill the entire parallel section 31 of the cavity 30. Instead, the aerosol-generating matrix 40 is spaced apart from and does not contact the front wall 13. The aerosol-generating matrix 40 also does not extend to the second or downstream end of the parallel section 31, or to the first or upstream end of the converging section 32. The width of the encapsulated aerosol-generating matrix 40 is less than the width of the parallel section 31 of the cavity 30.

[0381] Figure 9A schematic cross-sectional view of an aerosol generating apparatus 90 configured for use with the aerosol generating article 10 described herein is shown. The aerosol generating apparatus 90 is an elongated aerosol generating device extending between a proximal end 91 and a distal end 92. The aerosol generating apparatus 90 includes a battery 93, a controller 94, a first heater 95, and a second heater 96 located within a housing 97. The controller 94 controls the power supply from the battery 93 to the first heater 95 and the second heater 96. A cavity 1000 is defined in the apparatus 90, having an opening 1010 defined in the proximal end 91 of the apparatus 90. The opening 1010 is rectangular in shape and sized to accommodate the cross-section of the aerosol generating article 10. The cavity 1000 includes an upper planar surface 1020 and a lower planar surface 1030. A first heater 95 is located in the upper planar surface 1020 to heat the first planar outer surface 21 of the aerosol generating article 10 inserted into the cavity 1000, and a second heater 96 is located in the lower planar surface 1030 to heat the second planar outer surface 22 of the aerosol generating article 10 inserted into the cavity 1000. The device 90 includes an air inlet 98 defining an airflow path configured to allow air to flow from outside the device into the cavity 1000.

[0382] Figure 10 A schematic cross-sectional view of the aerosol generation system is shown, in which... Figure 9 Aerosol generating device 90 and Figure 1 The aerosol generating article 10 is engaged. There is virtually no tolerance between the first planar outer surface 21 and the second planar outer surface 22 of the aerosol generating article 10 and the inner surfaces 1020 and 1030 of the cavity 1000. Therefore, there is a tight fit between the aerosol generating article 10 and the aerosol generating device 90. The device is operable when the consumer has inserted the aerosol generating article 10 into the cavity 1000. A first heater 95 heats the first planar outer surface 21 of the aerosol generating article 10, and a second heater 96 heats the second planar outer surface 22 of the aerosol generating article, and thus heats the aerosol generating matrix. The volatile components of the aerosol generating matrix evaporate and condense in the cavity 30 of the aerosol generating article 10 to form an aerosol. The consumer inhales the aerosol by suctioning from the end of the aerosol generating article 10, which includes an air outlet 12. Once the volatile components of the aerosol generating matrix have been exhausted, the aerosol generating article 10 is removed from the cavity 1000 and disposed of.

[0383] For the purposes of this specification and the appended claims, unless otherwise stated, all figures representing quantities, quantities, percentages, etc., shall be understood to be modified by the term "about" in all cases. Furthermore, all ranges include the disclosed maximum and minimum points, and include any intermediate ranges that may or may not be specifically listed herein. Thus, in this document, the number A is understood to be A ± 10% of A. In this document, the number A may be considered to be a value within the general standard error of the measurement of the property modified by the number A. In certain instances used in the appended claims, the number A may deviate from the percentages listed above, provided that the amount of deviation from A does not materially affect the essential and novel features of the claimed invention. Moreover, all ranges include the disclosed maximum and minimum points, and include any intermediate ranges that may or may not be specifically listed herein.

Claims

1. An aerosol generating article for use with an aerosol generating apparatus to generate an aerosol, the aerosol generating article having a length extending in the x-direction, a width extending in the y-direction, and a thickness extending in the z-direction, the aerosol generating article comprising: First plane outer surface; Second plane outer surface; One or more aerosol-generating matrices; as well as A cavity extending in the x-direction between a first end and a second end of the cavity. The cavity includes a converging segment that extends in the x-direction between a first end and a second end of the converging segment. The width of the convergence segment decreases from the first end to the second end along the length of the convergence segment, and The length of the converging segment is greater than the width of the converging segment at the first end of the converging segment.

2. The aerosol generating article according to claim 1, wherein the width of the converging section decreases continuously along the entire length of the converging section from the first end of the converging section to the second end of the converging section.

3. The aerosol generating article according to claim 1 or 2, wherein the width of the converging section at the second end of the converging section is between 30% and 90% of the width of the converging section at the first end of the converging section.

4. The aerosol generating article according to any of the preceding claims, wherein the width of the converging section at the second end of the converging section is between 40% and 80% of the width of the converging section at the first end of the converging section.

5. The aerosol generating article according to any of the preceding claims, wherein the difference between the width of the converging segment at the first end of the converging segment and the width of the converging segment at the second end of the converging segment, divided by the length of the converging segment, is less than or equal to 1 mm / mm.

6. The aerosol generating article according to any of the preceding claims, wherein the length of the converging section is greater than or equal to 30% of the length of the cavity.

7. The aerosol generating article according to any of the preceding claims, comprising a frame positioned between the first planar outer surface and the second planar outer surface, wherein the frame includes a peripheral wall defining or defining at least a portion of the cavity.

8. The aerosol generating article of claim 7, wherein the peripheral wall includes a first converging sidewall segment and a second converging sidewall segment opposite to the first converging sidewall segment, and wherein both the first converging sidewall segment and the second converging sidewall segment define at least a portion of the length of the converging segment of the cavity.

9. The aerosol-generating article of claim 8, wherein the width of one or both of the first converging sidewall section and the second converging sidewall section increases along the x-direction.

10. The aerosol generating article according to claim 8 or 9, wherein the inner surfaces of the first converging sidewall section and the second converging sidewall section are at an angle relative to each other, and wherein the angle is less than or equal to 35 degrees.

11. The aerosol generating article according to any one of claims 8 to 10, wherein the outer surface of the first converging sidewall section is substantially parallel to the outer surface of the second converging sidewall section.

12. The aerosol generating article according to any of the preceding claims, wherein the converging section is positioned toward the second end of the cavity.

13. The aerosol generating article according to any of the preceding claims, wherein the cavity includes a non-converging section positioned toward a first end of the cavity.

14. The aerosol generating article of claim 13, wherein one or more aerosol generating matrices are located in the non-converging section of the cavity.

15. The aerosol generating article according to any of the preceding claims, wherein the converging section of the cavity is empty.

Images