Aerosol-generating article with planar frame

Abstract

An aerosol-generating article (1) for use with an aerosol-generating device to form an inhalable aerosol. The aerosol-generating article (1) comprises: a planar frame (100); a main air inlet (20); an aerosol outlet (30); an aerosolization chamber (40); and an aerosol-forming substrate (51, 52, 53). The planar frame (100) includes a planar upper surface (110), a planar lower surface (120), a proximal end (130), a distal end (140), and lateral sides (150, 160) extending between the proximal end (130) and the distal end (140). The main air inlet (20) is provided on a first lateral side (150) of the planar frame. The aerosol outlet (30) is provided on a proximal end (130) of the planar frame (100). The aerosolization chamber (40) is between the main air inlet (20) and the aerosol outlet (30). The aerosol-forming substrate (51, 52, 53) is located in the aerosolization chamber (40).

Description

[0001] The present disclosure relates to an aerosol-generating article and an aerosol-generating system including an aerosol-generating device and an aerosol-generating article.

[0002] Some known aerosol-generating systems include an aerosol-generating device having a power source (such as a battery), a controller, and a heating element for heating an aerosol-generating substrate. In some instances, the aerosol-generating substrate includes a tobacco strip or rod disposed in the aerosol-generating article. In use, the aerosol-generating article is inserted into a cavity of the aerosol-generating device, and the heating element penetrates the aerosol-generating substrate or is disposed around an exterior of the aerosol-generating substrate. Electrical power is supplied from the power source to the heating element to heat the aerosol-generating substrate, and volatile components of the aerosol-generating substrate are vaporized and released and condensed to form an aerosol that can be inhaled by a user. In some such aerosol-generating systems, the aerosol-generating article resembles a conventional cigarette having a similar cylindrical rod-shaped configuration.

[0003] In a known aerosol-generating system having an aerosol-generating article and an aerosol-generating device, an air inlet is provided at a distal end of the article and an air outlet is provided at a proximal end of the article. The aerosol-generating article is inserted into the device at its distal end. In order for air to reach the air inlet of the aerosol-generating article, an air passage is used to bypass device components such as control electronics, insulation, and electromagnetic shielding materials. Complex air passages can be difficult to manufacture and can increase manufacturing costs.

[0004] There is a desire to provide an improved aerosol-generating article for use with an aerosol-generating device.

[0005] According to the present disclosure, there is provided an aerosol-generating article for use with an aerosol-generating device to form an inhalable aerosol.

[0006] The aerosol-generating article may include a planar frame. The planar frame may include a planar upper surface. The planar frame may include a planar lower surface. The planar frame may include a proximal end. The planar frame may include a distal end. The planar frame may include lateral sides. The lateral sides may extend between the proximal end and the distal end. The aerosol-generating article may include a main air inlet. The main air inlet may be provided on the planar frame. The main air inlet may be provided on a first lateral side of the planar frame. The aerosol-generating article may include an aerosol outlet. The aerosol outlet may be provided on the planar frame. The aerosol outlet may be provided on the proximal end of the planar frame. The aerosol-generating article may include an aerosolization chamber. The aerosolization chamber may be between the main air inlet and the aerosol outlet. The aerosol-generating article may include an aerosol-generating substrate. The aerosol-generating substrate may be located in the aerosolization chamber.

[0007] According to the present disclosure, there is provided an aerosol - generating article for use with an aerosol - generating device to form an inhalable aerosol, the aerosol - generating article comprising:

[0008] A planar frame including a planar upper surface, a planar lower surface, a proximal end, a distal end, and lateral sides extending between the proximal end and the distal end;

[0009] A main air inlet disposed on a first lateral side of the planar frame;

[0010] An aerosol outlet disposed on the proximal end of the planar frame;

[0011] An aerosolization chamber between the main air inlet and the aerosol outlet; and

[0012] An aerosol - generating substrate located in the aerosolization chamber.

[0013] The aerosol - generating article has several advantages over known aerosol - generating articles.

[0014] - By providing the main air inlet on the first lateral side of the planar frame rather than on the distal end of the planar frame, device components such as control electronics, insulating materials, and electromagnetic shielding materials can be avoided. Thus, complex paths or multiple air - flow channels are not required, allowing for a simpler and more robust aerosol - generating article.

[0015] - By providing the main air inlet on the first lateral side of the planar frame and the aerosol outlet on the proximal end of the planar frame, the air - flow channel from the main air inlet to the aerosol outlet can diagonally cross the planar frame. Such an air - flow channel can cause a turbulent air flow, which provides a particularly suitable aerosol and an improved user experience. Compared with the case where the air - flow path directly spans the aerosol - generating substrate in the longitudinal direction, the diagonal air - flow path across the aerosol - generating substrate also provides a longer air - flow path. This improves aerosol - generation efficiency and provides a particularly effective aerosol - generating article. It also improves the uniformity of the generated aerosol.

[0016] As used herein, "planar" refers to features that are generally formed in a single Euclidean plane and do not wrap around or otherwise conform to fit curved or other non-planar shapes. A planar surface extends in two dimensions in a single Euclidean plane. The extension of a planar object in two dimensions in a single Euclidean plane is significantly greater than the extension in a third dimension perpendicular to the plane. More specifically, the extension of a planar object in a first dimension and a second dimension perpendicular to the first dimension is at least two times, five times, or ten times greater than the extension of the object in a third dimension perpendicular to the first and second dimensions. Advantageously, the planar components of the heating assembly can be easily handled during manufacturing and provide a robust construction.

[0017] As used herein, "aerosol-generating device" refers to a device that interacts with an aerosol-generating substrate to generate an aerosol.

[0018] As used herein, "aerosol-generating substrate" refers to a substrate capable of releasing volatile compounds that can form an aerosol. Such volatile compounds can be released by heating the aerosol-generating substrate.

[0019] As used herein, "aerosol-generating article" refers to an article that includes an aerosol-generating substrate that is capable of releasing volatile compounds that can form an aerosol. For example, an aerosol-generating article can be an article that generates an aerosol that can be directly inhaled by a user drawing on a mouthpiece at the proximal end or oral end of the aerosol-generating article, aerosol-generating device, or aerosol-generating system. The aerosol-generating article can be disposable.

[0020] As used herein, an "aerosol-generating system" refers to a combination of an aerosol-generating device and an aerosol-generating article. In an aerosol-generating system, the aerosol-generating article and the aerosol-generating device cooperate to generate an aerosol.

[0021] As used herein, "proximal end" refers to the user end or mouth end of an aerosol-generating device, an aerosol-generating article, or an aerosol-generating system. The proximal end of a component of an aerosol-generating device, an aerosol-generating article, or an aerosol-generating system is the end of the component closest to the user end or mouth end or mouthpiece end of the aerosol-generating device, an aerosol-generating article, or an aerosol-generating system. As used herein, "distal" refers to the end opposite the proximal end.

[0022] As used herein, "upper surface" and "lower surface" are relative terms that are used to refer to opposing surfaces of a feature such as an aerosol generating device, a heating assembly, a heating element, an aerosol generating article or a planar frame. During normal use of the feature, the upper surface may be located above the lower surface, but it will be appreciated that alternative orientations of the feature during use are possible.

[0023] As used herein, "length" refers to the maximum dimension of a feature in the longitudinal direction of the feature.

[0024] As used herein, "width" refers to the maximum dimension of a feature in the transverse direction of the feature. The transverse direction is perpendicular to the longitudinal direction.

[0025] As used herein, "thickness" and "depth" refer to the maximum dimension of a feature in a direction perpendicular to the longitudinal direction of the feature and perpendicular to the transverse direction of the feature. The terms "thickness" and "depth" may be used interchangeably herein.

[0026] As used herein, the term "aerosol former" may refer to any suitable known compound or mixture of compounds that promotes the formation of an aerosol in use. The aerosol may be a dense and stable aerosol. The aerosol may be substantially heat-resistant to degradation at the operating temperature of the aerosol-generating substrate or aerosol-generating article. Suitable aerosol formers included in the aerosol-generating substrate are known in the art and include, but are not limited to: polyols such as triethylene glycol, propylene glycol, 1,3-butanediol, and glycerol; esters of polyols such as glycerol mono-, di-, or triacetate; and aliphatic esters of mono-, di-, or polycarboxylic acids such as dimethyl dodecanedioate and dimethyl tetradecanedioate. Glycerol may be particularly preferably used as the aerosol former. The aerosol former content described with respect to the first and second aerosol-generating substrates may also be considered as the glycerol content.

[0027] As used herein, the terms "upstream" and "downstream" refer to the relative position of an element or a part of an element with respect to the direction in which air or aerosol is conveyed through the aerosol-generating article during use.

[0028] As used herein, unless otherwise specified, the term "bulk density" refers to the bulk density based on dry weight. The bulk density of the aerosol-generating substrate (or segment) can be calculated by measuring or otherwise determining the total dry weight of the aerosol-generating substrate (or segment) and dividing it by the volume of the aerosol-generating substrate (or segment).

[0029] The planar frame may have a width, a length, and a thickness. The length may be greater than the width. The width may be greater than the thickness. The thickness may not exceed 0.5 times the length. The thickness may not exceed 0.5 times the width. The thickness may be the thickness of the first lateral side. The length may be the dimension between the proximal end and the distal end of the planar frame. The width may be the dimension between the first lateral side and the second lateral side of the planar frame. The thickness may be the dimension between the planar upper surface and the planar lower surface of the planar frame.

[0030] The planar frame can have a length between about 20 millimeters and about 45 millimeters. Preferably, the planar frame has a length between about 25 millimeters and about 40 millimeters. The planar frame can have a width between about 9 millimeters and about 17 millimeters. Preferably, the planar frame has a width between about 11 millimeters and about 15 millimeters. The planar frame can have a thickness between about 2.5 millimeters and about 7 millimeters. Preferably, the planar frame has a thickness between about 3 millimeters and about 5 millimeters.

[0031] The first lateral side extends between the proximal end and the distal end. The first lateral side can have a length between the proximal end and the distal end. The first lateral side can extend between the planar upper surface and the planar lower surface. The first lateral side can have a width between the planar upper surface and the planar lower surface. The first lateral side can have a length between about 20 millimeters and about 45 millimeters. Preferably, the first lateral side has a length between about 25 millimeters and about 40 millimeters. The first lateral side can have a width between about 2.5 millimeters and about 7 millimeters. Preferably, the first lateral side has a width between about 3 millimeters and about 5 millimeters. The length of the first lateral side can be in the length direction of the planar frame. The first lateral side can be substantially rectangular.

[0032] The planar frame can include a second lateral side. The second lateral side can be arranged opposite to the first lateral side. The atomization chamber can be between the first lateral side and the second lateral side. The second lateral side can have a length between the proximal end and the distal end. The second lateral side can extend between the proximal end and the distal end. The second lateral side can extend between the planar upper surface and the planar lower surface. The second lateral side can have a width between the planar upper surface and the planar lower surface. The second lateral side can have a length between about 20 millimeters and about 45 millimeters. Preferably, the second lateral side has a length between about 25 millimeters and about 40 millimeters. The second lateral side can have a width between about 2.5 millimeters and about 7 millimeters. Preferably, the second lateral side has a width between about 3 millimeters and about 5 millimeters. The length of the second lateral side can be in the length direction of the planar frame. The second lateral side can be substantially rectangular.

[0033] The proximal end can extend between the planar upper surface and the planar lower surface. The proximal end can have a width between the planar upper surface and the planar lower surface. The proximal end can extend between the first lateral side and the second lateral side. The proximal end can have a length between the first lateral side and the second lateral side. The proximal end can have a length between about 9 millimeters and about 17 millimeters. Preferably, the proximal end has a length between about 11 millimeters and about 15 millimeters. The proximal end can have a width between about 2.5 millimeters and about 7 millimeters. Preferably, the proximal end has a width between about 3 millimeters and about 5 millimeters. The proximal end can be substantially rectangular.

[0034] The distal end can extend between a planar upper surface and a planar lower surface. The distal end can have a width between the planar upper surface and the planar lower surface. The distal end can extend between a first lateral side and a second lateral side. The distal end can have a length between the first lateral side and the second lateral side. The distal end can have a length between about 9 millimeters and 17 millimeters. Preferably, the distal end has a length between about 11 millimeters and 15 millimeters. The distal end can have a width between about 2.5 millimeters and 7 millimeters. Preferably, the distal end has a width between about 3 millimeters and 5 millimeters. The distal end can be substantially rectangular.

[0035] The planar upper surface can extend between the proximal end and the distal end. The planar upper surface can extend between the first lateral side and the second lateral side. The planar upper surface can have a length between about 20 millimeters and 45 millimeters. Preferably, the planar upper surface has a length between about 25 millimeters and 40 millimeters. The planar upper surface can have a width between about 9 millimeters and 17 millimeters. Preferably, the planar upper surface has a width between about 11 millimeters and 15 millimeters. The length of the planar upper surface can be in the length direction of the planar frame. The width of the planar upper surface can be in the width direction of the planar frame. The planar upper surface can have a thickness of at most 55 micrometers. The planar upper surface can have a thickness between 25 micrometers and 55 micrometers, preferably between 25 micrometers and 45 micrometers, more preferably between 30 micrometers and 45 micrometers. The planar upper surface can be substantially rectangular.

[0036] The planar lower surface can extend between the proximal end and the distal end. The planar lower surface can extend between the first lateral side and the second lateral side. The planar lower surface can have a length between about 20 millimeters and 45 millimeters. Preferably, the planar lower surface has a length between about 25 millimeters and 40 millimeters. The planar lower surface can have a width between about 9 millimeters and 17 millimeters. Preferably, the planar lower surface has a width between about 11 millimeters and 15 millimeters. The length of the planar lower surface can be in the length direction of the planar frame. The width of the planar lower surface can be in the width direction of the planar frame. The planar lower surface can have a thickness of at most 55 micrometers. The planar lower surface can have a thickness between 25 micrometers and 55 micrometers, preferably between 25 micrometers and 45 micrometers, more preferably between 30 micrometers and 45 micrometers. The planar lower surface can be substantially rectangular.

[0037] The planar frame can have a longitudinal axis. The longitudinal axis of the planar frame can be the central axis of the planar frame. The longitudinal axis of the planar frame can extend in the length direction of the planar frame. The aerosol outlet can be at or near the longitudinal axis. The aerosol outlet can intersect the longitudinal axis.

[0038] The distance between the main air inlet and the distal end of the planar frame can be at most 20% of the length of the planar frame. The distance between the main air inlet and the distal end of the planar frame can be at most 15% of the length of the planar frame. The distance between the main air inlet and the distal end of the planar frame can be at most 10% of the length of the planar frame. The main air inlet can be disposed close to the distal end of the planar frame. This has the advantage of increasing the length of the air flow path between the main air inlet and the aerosol outlet, thereby improving the efficiency of aerosol generation. The distance between the main air inlet and the distal end of the planar frame can be at least 5% of the length of the planar frame. The distance between the main air inlet and the distal end of the planar frame can be at least 10% of the length of the planar frame.

[0039] The main air inlet can be directly connected to the inlet channel. The inlet channel can connect the main air inlet to the aerosolization chamber. The inlet channel can extend in the width direction of the planar frame. The inlet channel can be aligned with the distal end of the planar frame. The inlet channel can be parallel to the distal end of the planar frame.

[0040] One or both of the main air inlet and the inlet channel can be disposed at an angle between 45 degrees and 135 degrees with respect to the aerosol outlet. Preferably, one or both of the main air inlet and the inlet channel are disposed at an angle between 60 degrees and 120 degrees with respect to the aerosol outlet. More preferably, one or both of the main air inlet and the inlet channel are disposed at an angle of substantially 90 degrees with respect to the aerosol outlet. This has the advantage of increasing the proportion of the air flow that diagonally advances from the main air inlet to the aerosol outlet.

[0041] The aerosolization chamber can be downstream of the main air inlet. The aerosol outlet can be downstream of the aerosolization chamber. The aerosolization chamber can be substantially enclosed. The aerosolization chamber can be substantially enclosed by the upper surface, lower surface, proximal end, distal end, and lateral sides of the planar frame. The aerosolization chamber can be defined between the upper surface, lower surface, proximal end, distal end, and lateral sides of the planar frame. The aerosolization chamber can extend over at least 50%, preferably at least 60%, more preferably at least 70% of the planar frame. This provides an effective use of the space within the planar frame.

[0042] The planar upper surface can include paper. The planar upper surface can include paper-based foil. The planar upper surface can include a polymer. The planar upper surface can include a biopolymer laminated foil. The planar upper surface can have a permeability between 10 CORESTA units and 35 CORESTA units.

[0043] One or more of the proximal end, distal end, and lateral sides may include one or more of the following: carton, cardboard, paper, paper-based material, laminate, biopolymer, biopolymer laminate foil. At least 50 wt% of the aerosol-generating article may be paper or cardboard. In addition to the aerosol-forming substrate, at least 55 wt%, or at least 60 wt%, or at least 65 wt%, or at least 70 wt%, or at least 75 wt%, or at least 80 wt%, or at least 85 wt%, or at least 90 wt% of the aerosol-generating article may be paper or cardboard.

[0044] The planar lower surface may include a heat-conductive material. The planar lower surface may be impermeable. The planar lower surface may include an impermeable material. The planar lower surface may include one or more of the following: paper, paper-based foil, paper and biopolymer laminate foil. The planar lower surface may have a thickness between about 1.1 microns and about 4.5 microns. The planar lower surface may have a basis weight between about 45 g / m² and 140 g / m². Preferably, the planar lower surface has a basis weight between about 50 g / m² and 110 g / m². The planar lower surface may have a permeability of about 1 to 25 CORESTA units. Preferably, the planar lower surface has a permeability of about 1 to 5 CORESTA units. The planar lower surface may be configured to transfer heat between the heating element of the aerosol-generating device and the aerosol-forming substrate. The planar lower surface may have a coating. The planar lower surface may have a coating on the upper side of the planar lower surface. The planar lower surface may have a coating on the side in contact with the aerosol-forming substrate. The coating may be impermeable. The coating may be an impermeable laminate layer. The coating may have a thickness between about 0.75 microns and about 1.5 microns. The coating may include a food-grade material. The coating may include a Food and Drug Administration (FDA) food and beverage industry grade composition. The coating may include materials classified according to Title 21 of the Code of Federal Regulations, FDA regulations. The coating may include a copolymer-based dispersion. The coating may include acrylate and styrene, or be an acrylate and styrene copolymer dispersion. The coating may include a styrene-butadiene copolymer, or be a styrene-butadiene copolymer dispersion. The styrene-butadiene copolymer dispersion may have been applied as an aqueous dispersion of styrene-butadiene copolymer during the paper processing. The aqueous dispersion of styrene-butadiene copolymer may have a solids content of about 50%.

[0045] The main air inlet may be the only air inlet of the aerosolization chamber. The main air inlet may be the only air inlet in the planar frame. Alternatively, one or more additional inlets may be provided for the aerosolization chamber. One or more additional inlets may be provided in the planar frame. The main air inlet may be larger than, smaller than, or equal to the size of the other one or more inlets.

[0046] An aerosol-generating article may include a ventilation air inlet. The ventilation air inlet may be configured to allow external air to access an airflow path between the aerosolization chamber and the aerosol outlet. The ventilation air inlet may be provided between the aerosolization chamber and the aerosol outlet. This has the advantage of allowing additional air to be added to the aerosol after the aerosol has left the aerosol-forming substrate. This allows the aerosol to be conditioned, cooled, and diluted, thus providing an improved user experience.

[0047] The ventilation air inlet may be provided near the proximal end of the planar frame. The distance between the ventilation air inlet and the proximal end of the planar frame may be at most 10% of the length of the planar frame. The distance between the ventilation air inlet and the proximal end of the planar frame may be at least 5% of the length of the planar frame. This allows the aerosol-generating article to have a simple and robust design. Preferably, the distance between the ventilation air inlet and the proximal end of the planar frame is at least 5% of the length of the planar frame. This allows the aerosol-generating article to have a simple and robust design. The ventilation air inlet may be closer to the aerosolization chamber than to the aerosol outlet. This allows the aerosol-generating article to have a simple and robust design. The distance between the ventilation air inlet and the proximal end of the planar frame may be at most 10% of the length of the planar frame. The ventilation air inlet may be positioned such that when the aerosol-generating article is received in an aerosol-generating device, it is outside the aerosol-generating device. This allows for a simple and effective airflow path to the aerosol outlet.

[0048] The ventilation air inlet may be provided on a lateral side of the planar frame. This provides an aerosol-generating device that is easy to manufacture. The ventilation air inlet may be provided on a first lateral side of the planar frame. By providing the main air inlet and the ventilation air inlet on the same lateral side, a simple and robust design is achieved.

[0049] The ventilation air inlet may have a smaller cross-sectional area than the main air inlet. The main air inlet and the ventilation air inlet may be configured such that at least 70% of the air reaching the aerosol outlet comes from the main air inlet. The main air inlet and the ventilation air inlet may be configured such that 10% to 75% of the air reaching the aerosol outlet comes from the ventilation air inlet. Preferably, the main air inlet and the ventilation air inlet are configured such that 15% to 55% of the air reaching the aerosol outlet comes from the ventilation air inlet. The aerosol may be diluted by the air from the ventilation air inlet by about 15% to 55%. The main air inlet and the ventilation air inlet may be configured such that at most 30% of the air reaching the aerosol outlet comes from the ventilation air inlet. This has the advantage of obtaining an improved aerosol at the aerosol outlet, the improved aerosol being both cooled to a suitable temperature and having a suitable concentration.

[0050] An aerosol-generating article may include an outlet passage. The ventilation air inlet may be directly connected to the outlet passage. This has the advantage of providing a simple aerosol-generating article that can generate a particularly suitable aerosol.

[0051] The aerosol-generating article may include a ventilation air passage connecting the ventilation air inlet to the outlet passage. The ventilation air passage may extend in the width direction of the planar frame. The ventilation air passage may be aligned with the proximal end of the planar frame. The ventilation air passage may be parallel to the proximal end of the planar frame. The ventilation air passage may be closer to the atomization chamber than to the aerosol outlet.

[0052] The outlet passage may extend from the atomization chamber to the aerosol outlet. The outlet passage may taper towards the aerosol outlet. The outlet passage may have a shape that converges and then diverges as it extends from the atomization chamber to the aerosol outlet. The outlet passage may extend at an angle of at most 40 degrees, preferably 30 degrees, with respect to the longitudinal direction.

[0053] The outlet passage may have a distal end connected to the atomization chamber. The distal end of the outlet passage may be close to the second lateral side of the planar frame. By having a main air inlet on the first lateral side and an outlet passage with a distal end close to the second lateral side, the air flow must diagonally cross the atomization chamber from the first lateral side to the second lateral side. This provides a longer air flow path than the case where the air flow path directly spans the aerosol-generating substrate in the longitudinal direction. This provides a particularly effective aerosol-generating article and improves the uniformity of aerosol generation. By providing the outlet passage, the aerosol outlet may be at a lateral position different from the distal end of the outlet passage. For example, the aerosol outlet may be at a substantially central position, such as close to or intersecting the longitudinal axis of the aerosol-generating article.

[0054] The aerosol-generating article may include a cooling chamber. The cooling chamber may be configured to cool and homogenize the aerosol passing through from the atomization chamber. The cooling chamber may be downstream of the atomization chamber. The cooling chamber may be provided between the atomization chamber and the aerosol outlet. This allows the aerosol to be cooled and homogenized.

[0055] The cooling chamber may be substantially enclosed by a planar upper surface, a planar lower surface, and lateral sides. The aerosol-generating article may include an inner wall to separate the atomization chamber from the cooling chamber. The cooling chamber may be substantially enclosed by a planar upper surface, a planar lower surface, lateral sides, a proximal end, and an inner wall.

[0056] The cooling chamber may have a width that is substantially the same as the width of the aerosolization chamber. The cooling chamber may have a depth that is substantially the same as the depth of the aerosolization chamber. The cooling chamber may have a length that is less than the length of the aerosolization chamber. The length of the cooling chamber may be less than half the length of the aerosolization chamber. The length of the cooling chamber may be less than one-third of the length of the aerosolization chamber.

[0057] The ventilation air inlet may be directly connected to the cooling chamber. This allows for the conditioning, cooling, and dilution of the aerosol, thereby providing an improved user experience. This is particularly advantageous when the aerosol-generating article is used in a warm environment (such as an environment with a temperature above approximately 31 degrees Celsius). This is also particularly advantageous when the aerosol-generating article is used in a humid environment (such as an environment with a relative humidity above approximately 90%).

[0058] The ventilation air inlet may be aligned with the distal end of the cooling chamber. The ventilation air inlet may be at the same longitudinal position as the distal end of the cooling chamber.

[0059] The aerosol-generating article may include a ventilation air passage connecting the ventilation air inlet to the cooling chamber. The ventilation air passage may extend in the width direction of the planar frame. The ventilation air passage may be aligned with the proximal end of the planar frame. The ventilation air passage may be parallel to the proximal end of the planar frame. The ventilation air passage may be aligned with the distal end of the cooling chamber. The ventilation air passage may be collinear with the distal end of the cooling chamber.

[0060] The aerosolization chamber may be connected to the cooling chamber by a connecting passage. The connecting passage may be disposed near the second lateral side of the planar frame, the second lateral side being opposite the first lateral side. The connecting passage may extend in the longitudinal direction of the planar frame.

[0061] The aerosol-generating article may include an outlet passage extending from the cooling chamber to the aerosol outlet. The outlet passage may have a distal end connected to the cooling chamber. The distal end may be near the first lateral side of the planar frame. This arrangement allows the airflow to pass diagonally through the cooling chamber, which induces a turbulent airflow and increases the airflow path, thereby improving aerosol uniformity and cooling, and providing an improved user experience. This also provides an efficient use of the space within the aerosol-generating article.

[0062] The aerosol-forming substrate may include nicotine. The aerosol-forming substrate may include one or more of the following: aerosol formers, tobacco, plant materials, flavorants, aerosol volume enhancers. Suitable types of materials for use in the aerosol-forming substrate include, for example, tobacco cut filler, homogenized tobacco materials such as cast leaf, aerosol-forming films, and gel compositions.

[0063] The aerosol - generating substrate may include a plurality of aerosol - generating segments. At least two of the aerosol - generating segments may differ from each other in at least one of size, shape, aerosol - forming agent content, and bulk density. The aerosol - generating substrate may include three aerosol - generating segments. The three aerosol - generating segments may differ from each other in at least one of size, shape, aerosol - forming agent content, and bulk density. All the aerosol - generating segments may differ from each other in at least one of size, shape, aerosol - forming agent content, and bulk density.

[0064] The aerosol - generating substrate may be in contact with the lower surface of the planar frame. The aerosol - generating substrate may be deposited on the lower surface of the planar frame.

[0065] The aerosol - generating substrate may be spaced apart from the upper surface of the planar frame. An air gap may exist between the aerosol - generating substrate and the upper surface of the planar frame. An air gap may exist between the upper surface of the aerosol - generating substrate and the upper surface of the planar frame.

[0066] The first lateral side may be a first lateral side wall. The second lateral side may be a second lateral side wall. The proximal end may be a proximal end wall. The distal end may be a distal end wall. The planar upper surface may be a planar upper surface wall. The planar lower surface may be a planar lower surface wall. The proximal end wall may be a mouthpiece portion. One or both of the planar lower surface and the planar upper surface may be a material layer.

[0067] The aerosol - generating article may be disposed in an aerosol - generating system. The aerosol - generating system may include an aerosol - generating device.

[0068] The aerosol - generating device may have a length between about 110 millimeters and 200 millimeters. Preferably, the aerosol - generating device has a length between about 120 millimeters and 150 millimeters. The aerosol - generating device may have a width between about 20 millimeters and 45 millimeters. Preferably, the aerosol - generating device has a width between about 25 millimeters and 35 millimeters. The aerosol - generating device may have a thickness between about 20 millimeters and 45 millimeters. Preferably, the aerosol - generating device has a thickness between about 25 millimeters and 35 millimeters.

[0069] The aerosol - generating device may include a heating element. The heating element may be a resistive heating element. The heating element may include an inductor. The heating element may include a susceptor. The heating element may include a plurality of inductors. The heating element may include a plurality of susceptors. The heating element may be one heating plate or multiple heating plates. The heating element may be disposed on the inner wall of the device. The inner wall may be a solid wall. The inner wall may not be porous.

[0070] The draw resistance of the aerosol-generating article can be defined by the airflow rate through the main air inlet and the inlet channel. If the aerosol-generating article has a ventilation air inlet, the draw resistance can be defined by the airflow rate through the ventilation air inlet, the ventilation air channel, the main air inlet, and the inlet channel.

[0071] The draw resistance of the aerosol-generating article can be between 50 and 220 mmH2O. The draw resistance of the aerosol-generating article is preferably between 70 and 140 mmH2O.

[0072] According to the present disclosure, there is provided an aerosol-generating system for forming an inhalable aerosol. The aerosol-generating system can include an aerosol-generating article. The aerosol-generating system can include an aerosol-generating device. The aerosol-generating article can include a planar frame. The planar frame can include a planar lower surface. The planar frame can include a proximal end. The planar frame can include a distal end. The planar frame can include lateral sides. The lateral sides can extend between the proximal end and the distal end. The aerosol-generating article can include a main air inlet. The main air inlet can be provided on a first lateral side of the planar frame. The aerosol-generating article can include an aerosol outlet. The aerosol outlet can be provided on the proximal end of the planar frame. The aerosol-generating article can include an aerosol-generating substrate. The aerosol-generating substrate can be located in an aerosolization chamber. The aerosol-generating device can include a heating element. The heating element can be configured to heat the aerosol-generating substrate to form an aerosol. The aerosol-generating device can include a device housing. The device housing can have a planar inner surface. The aerosol-generating article can be configured to be inserted into the device. The aerosol-generating article can be configured to be inserted into the device to form an aerosolization chamber between the lower surface of the aerosol-generating article and the inner surface of the device. The aerosol-generating substrate can be located in the aerosolization chamber.

[0073] According to the present disclosure, there is provided an aerosol-generating system for forming an inhalable aerosol, comprising an aerosol-generating article and an aerosol-generating device;

[0074] The aerosol-generating article includes:

[0075] A planar frame including a planar lower surface, a proximal end, a distal end, and lateral sides extending between the proximal end and the distal end;

[0076] A main air inlet provided on a first lateral side of the planar frame;

[0077] An aerosol outlet provided on the proximal end of the planar frame;

[0078] An aerosol-generating substrate,

[0079] The aerosol-generating device includes:

[0080] A heating element configured to heat the aerosol - forming substrate to form an aerosol,

[0081] and a device housing having an in - plane inner surface;

[0082] wherein the aerosol - generating article is configured to be inserted into the device to form:

[0083] an aerosolization chamber between a lower surface of the aerosol - generating article and the inner surface of the device, and the aerosol - forming substrate is located in the aerosolization chamber.

[0084] The aerosol - generating article may include a ventilation air inlet which, when the aerosol - generating article is received in the aerosol - generating device, may be located outside the aerosol - generating device. When the aerosol - generating article is received in the cavity of the aerosol - generating device, the ventilation air inlet may be located outside the aerosol - generating device. When the aerosol - generating article is received in the aerosol - generating device, the main air inlet may be located inside the aerosol - generating device. The aerosol - generating device may include a device air inlet. When the aerosol - generating article is received in the aerosol - generating device, the device air inlet may be aligned with the main air inlet.

[0085] When the aerosol - generating article is received in the aerosol - generating device, the heating element may be close to the planar lower surface of the aerosol - generating article. The heating element may include a plurality of segments. The number of segments of the heating element may be the same as the number of segments of the aerosol - forming substrate. Each segment of the heating element may be aligned with a corresponding segment of the aerosol - forming substrate.

[0086] The aerosol - generating device may include one or more of the following: a power source configured to supply power to the heating element; control electronics; a power source; and a port. The control electronics may include an electronics control unit. The power source may include a battery, such as a lithium - ion battery. The port may be a power port. The port may be a data port. The port may be a power and data port.

[0087] The aerosol - generating article of the aerosol - generating system may include any one of the aerosol - generating article features described herein.

[0088] 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.

[0089] Example Ex1. An aerosol-generating article for use with an aerosol-generating device to form an inhalable aerosol, the aerosol-generating article comprising:

[0090] A planar frame comprising a planar upper surface, a planar lower surface, a proximal end, a distal end, and lateral sides extending between the proximal end and the distal end;

[0091] A main air inlet provided on a first lateral side of the planar frame;

[0092] An aerosol outlet provided on the proximal end of the planar frame;

[0093] An aerosolization chamber between the main air inlet and the aerosol outlet; and

[0094] An aerosol-generating substrate located in the aerosolization chamber.

[0095] Example Ex2. The aerosol-generating article according to Example Ex1, wherein the planar frame has a longitudinal axis, and the aerosol outlet is at or near the longitudinal axis.

[0096] Example Ex3. The aerosol-generating article according to Example Ex1 or Example Ex2, wherein the main air inlet is provided near the distal end of the planar frame.

[0097] Example Ex4. The aerosol-generating article according to any one of Examples Ex1 to Ex3, wherein the distance between the main air inlet and the distal end of the planar frame is at most 10% of the length of the planar frame.

[0098] Example Ex5. The aerosol-generating article according to any one of Examples Ex1 to Ex4, wherein the main air inlet is provided at an angle between 45 degrees and 135 degrees with respect to the aerosol outlet.

[0099] Example Ex6. The aerosol-generating article according to any one of Examples Ex1 to Ex5, wherein the main air inlet is provided at an angle between 60 degrees and 120 degrees with respect to the aerosol outlet.

[0100] Example Ex7. The aerosol-generating article according to any one of Examples Ex1 to Ex6, wherein the main air inlet is provided at an angle of substantially 90 degrees with respect to the aerosol outlet.

[0101] Example Ex8. The aerosol-generating article according to any one of Examples Ex1 to Ex7, wherein the aerosolization chamber is defined between the upper surface, the lower surface, the proximal end, the distal end, and the lateral sides of the planar frame.

[0102] Example Ex9. An aerosol-generating article according to any one of Examples Ex1 to Ex8, comprising a ventilation air inlet disposed between the aerosolization chamber and the aerosol outlet.

[0103] Example Ex10. An aerosol-generating article according to Example Ex9, wherein the ventilation air inlet is disposed near the proximal end of the planar frame.

[0104] Example Ex11. An aerosol-generating article according to Example Ex9 or Example Ex10, wherein the distance between the ventilation air inlet and the proximal end of the planar frame is at most 10% of the length of the planar frame.

[0105] Example Ex12. An aerosol-generating article according to any one of Examples Ex9 to Ex11, wherein the ventilation air inlet is disposed on a lateral side of the planar frame.

[0106] Example Ex13. An aerosol-generating article according to any one of Examples Ex9 to Ex12, wherein the ventilation air inlet is disposed on a first lateral side of the planar frame.

[0107] Example Ex14. An aerosol-generating article according to any one of Examples Ex9 to Ex13, wherein the ventilation air inlet has a smaller cross-sectional area than the main air inlet.

[0108] Example Ex15. An aerosol-generating article according to any one of Examples Ex9 to Ex14, wherein the main air inlet and the ventilation air inlet are configured such that at most 30% of the air reaching the aerosol outlet comes from the ventilation air inlet.

[0109] Example Ex16. An aerosol-generating article according to any one of Examples Ex9 to Ex15, wherein the main air inlet and the ventilation air inlet are configured such that at least 70% of the air reaching the aerosol outlet comes from the main air inlet.

[0110] Example Ex17. An aerosol-generating article according to any one of Examples Ex9 to Ex16, wherein the ventilation air inlet is positioned such that when the aerosol-generating article is received in an aerosol-generating device, it is outside the aerosol-generating device.

[0111] Example Ex18. An aerosol-generating article according to any one of Examples Ex1 to Ex17, comprising an outlet channel extending from the aerosolization chamber to the aerosol outlet.

[0112] Example Ex19. The aerosol-generating article according to Example Ex18, wherein the outlet channel has a distal end connected to the aerosolization chamber, the distal end being close to the second lateral side of the planar frame, the second lateral side being opposite to the first lateral side.

[0113] Example Ex20. The aerosol-generating article according to Example Ex18 or Ex19 when dependent on any one of Examples Ex9 to Ex17, wherein the ventilation air inlet is directly connected to the outlet channel.

[0114] Example Ex21. The aerosol-generating article according to Example Ex20, which includes a ventilation air channel connecting the ventilation air inlet to the outlet channel.

[0115] Example Ex22. The aerosol-generating article according to any one of Examples Ex1 to Ex21, which includes a cooling chamber provided between the aerosolization chamber and the aerosol outlet.

[0116] Example Ex23. The aerosol-generating article according to Example Ex22, wherein the cooling chamber is substantially enclosed by the planar upper surface, the planar lower surface, and the lateral sides.

[0117] Example Ex24. The aerosol-generating article according to Example Ex22 or Example Ex23, which includes an outlet channel extending from the cooling chamber to the aerosol outlet.

[0118] Example Ex25. The aerosol-generating article according to Example Ex24, wherein the outlet channel has a distal end connected to the cooling chamber, the distal end being close to the first lateral side of the planar frame.

[0119] Example Ex26. The aerosol-generating article according to any one of Examples Ex22 to Ex25 when dependent on any one of Examples Ex9 to Ex17, wherein the ventilation air inlet is directly connected to the cooling chamber.

[0120] Example Ex27. The aerosol-generating article according to any one of Example Ex26, which includes a ventilation air channel connecting the ventilation air inlet to the cooling chamber.

[0121] Example Ex28. The aerosol-generating article according to any one of Examples Ex22 to Ex27, wherein the aerosolization chamber is connected to the cooling chamber through a connecting channel, the connecting channel being provided close to the second lateral side of the planar frame, the second lateral side being opposite to the first lateral side.

[0122] Example Ex29. An aerosol-generating article according to any one of Examples Ex1 to Ex28, wherein the aerosol-generating substrate comprises a plurality of aerosol-generating segments, at least two of the aerosol-generating segments being different from each other in at least one of size, shape, aerosol-forming agent content, and bulk density.

[0123] Example Ex30. An aerosol-generating article according to any one of Examples Ex1 to Ex29, wherein the aerosol-generating substrate comprises three aerosol-generating segments.

[0124] Example Ex31. An aerosol-generating article according to any one of Examples Ex1 to Ex30, wherein the planar frame has a width, a length, and a thickness, the length being greater than the width, and the width being greater than the thickness.

[0125] Example Ex32. An aerosol-generating article according to Example Ex31, wherein the planar frame has a length, a width, and a thickness, the thickness being no more than 0.5 times the length and no more than 0.5 times the width.

[0126] Example Ex33. An aerosol-generating article according to Example Ex31 or Example Ex32, wherein the depth is the depth of the first lateral side.

[0127] Example Ex34. An aerosol-generating system comprising an aerosol-generating device and an aerosol-generating article according to any one of Examples Ex1 to Ex33,

[0128] The aerosol-generating device comprises a heating element.

[0129] Example Ex35. An aerosol-generating system for forming an inhalable aerosol, comprising an aerosol-generating article and an aerosol-generating device;

[0130] The aerosol-generating article comprises:

[0131] A planar frame comprising a planar lower surface, a proximal end, a distal end, and lateral sides extending between the proximal end and the distal end;

[0132] A main air inlet provided on a first lateral side of the planar frame;

[0133] An aerosol outlet provided on the proximal end of the planar frame;

[0134] An aerosol-generating substrate,

[0135] The aerosol-generating device comprises:

[0136] A heating element configured to heat the aerosol-generating substrate to form an aerosol,

[0137] and a device housing having an inner planar surface;

[0138] wherein the aerosol-generating article is configured to be inserted into the device to form:

[0139] an aerosolization chamber between a lower surface of the aerosol-generating article and the inner surface of the device, the aerosol-generating substrate being located in the aerosolization chamber.

[0140] Example Ex36. The aerosol-generating system according to Example Ex34 or Example Ex35, wherein when the aerosol-generating article is received in the aerosol-generating device, the ventilation air inlet is located outside the aerosol-generating device.

[0141] Example Ex37. The aerosol-generating system according to any one of Examples Ex34, 35 or 36, wherein when the aerosol-generating article is received in the aerosol-generating device, the heating element is close to a planar lower surface of the aerosol-generating article.

[0142] Example Ex38. The aerosol-generating system according to any one of Examples Ex34 to Ex37, wherein the aerosol-generating device includes a power source configured to supply power to the heating element.

[0143] Example Ex39. The aerosol-generating system according to any one of Examples Ex34 to Ex38, wherein the aerosol-generating device includes control electronics.

[0144] The examples will now be further described with reference to the accompanying drawings, in which:

[0145] Figure 1 is a cross-sectional schematic view of a first embodiment of an aerosol-generating article according to the present disclosure;

[0146] Figure 2 is a cross-sectional schematic view of a first embodiment of an aerosol-generating article according to the present disclosure;

[0147] Figure 3 shows an air flow through the aerosol-generating article Figure 1 schematic diagram of;

[0148] Figure 4 is a cross-sectional schematic view of a second embodiment of an aerosol-generating article according to the present disclosure;

[0149] Figure 5 is a cross-sectional schematic view of a third embodiment of an aerosol-generating article according to the present disclosure;

[0150] Figure 6 shows an air flow through the aerosol-generating articleFigure 5 Schematic diagram;

[0151] Figure 7 Cross-sectional schematic diagram of a fourth embodiment of an aerosol-generating article according to the present disclosure;

[0152] Figure 8 Cross-sectional schematic diagram of a fourth embodiment aerosol-generating article in an aerosol-generating system including an aerosol-generating device; and

[0153] Figure 9 is Figure 8 Cross-sectional schematic diagram of an aerosol-generating system. Detailed implementation

[0154] Figure 1 Shows a cross-section through a first embodiment of an aerosol-generating article 1 according to the present disclosure.

[0155] The aerosol-generating article 1 includes: a planar frame 100; a main air inlet 20; an aerosol outlet 30; and an aerosolization chamber 40.

[0156] The planar frame 100 includes a proximal end 130, a distal end 140, and lateral sides 150, 160 extending between the proximal end 130 and the distal end 140. As Figure 2 shown, the planar frame 100 includes a planar upper surface 110 and a planar lower surface 120.

[0157] The main air inlet 20 is provided on the first lateral side 150 of the planar frame 100. The main air inlet 20 is provided near the distal end 140 of the planar frame. The main air inlet 20 is provided at an angle of substantially 90 degrees with respect to the aerosol outlet 30. The main air inlet 20 is connected to the aerosolization chamber 40 through an inlet passage 21.

[0158] The aerosol outlet 30 is provided on the proximal end 130 of the planar frame 100. The planar frame 100 has a longitudinal axis 101 extending from the distal end 140 of the planar frame 100 to the proximal end 130. The aerosol outlet 30 is at the longitudinal axis 101. Specifically, the longitudinal axis 101 passes through the aerosol outlet 30. The aerosol outlet 30 is connected to the aerosolization chamber 40 through an outlet passage 31. The outlet passage 31 is directly connected to the aerosolization chamber 40 at the distal end 34 of the outlet passage 31. The distal end 34 is near the second lateral side 160 of the planar frame 100.

[0159] The aerosolization chamber 40 is between the main air inlet 20 and the aerosol outlet 30. The aerosolization chamber 40 is defined between the upper surface 110, the lower surface 120, the proximal end 130, the distal end 140, and the lateral sides 150, 160 of the planar frame.

[0160] The aerosol - forming substrates 51, 52, 53 are located in the aerosolization chamber 40. In Figure 1 and 2 schematic views, the aerosol - forming substrate is arranged as a first section 51, a second section 52, and a third section 53.

[0161] As Figure 2 best seen, the aerosol - forming substrates 51, 52, 53 are arranged in the aerosolization chamber 40 such that there is an air gap 41 between the aerosol - forming substrates 51, 52, 53 and the upper surface 110.

[0162] Figure 3 shows Figure 1 the aerosol - generating article, where the arrows indicate the air flow through the aerosol - generating article. As Figure 3 shown, air can enter the planar frame 100 at the main air inlet 20. Then, the air crosses the air gap 41 in the aerosolization chamber 40 across the upper surfaces of the aerosol - forming substrates 51, 52, 53. The air flow diagonally crosses the aerosolization chamber 40 from the first lateral side 150 and the distal end 140 towards the second lateral side 160 and the proximal end 130. When the air approaches the proximal end 130 of the planar frame 100, it passes through the outlet channel 31 to reach the aerosol outlet 30. When the air passes through the outlet channel 31, it moves away from the second lateral side 160 towards the longitudinal axis 101 of the planar frame 100.

[0163] Figure 4 shows a cross - section through a second embodiment of the aerosol - generating article 1 according to the present disclosure. The second - embodiment aerosol - generating article 1 is identical to the first - embodiment aerosol - generating article except that it includes a ventilation air inlet 60 and a ventilation air channel 61.

[0164] The ventilation air inlet 60 is provided between the aerosolization chamber 40 and the aerosol outlet 30. The ventilation air inlet 60 is directly connected to the outlet channel 31. The ventilation air inlet 60 is provided near the proximal end 130 of the planar frame 100. The ventilation air inlet 60 is provided on the first lateral side 150 of the planar frame 100. The ventilation air inlet 60 has a smaller cross - sectional area than the main air inlet 20. The ventilation air channel 61 connects the ventilation air inlet 60 to the outlet channel 30.

[0165] Figure 5Shows a cross-section through a third embodiment of the aerosol-generating article 1 according to the present disclosure. The third embodiment aerosol-generating article 1 is the same as the first embodiment aerosol-generating article 1 except that it includes a cooling chamber 70 and a connecting channel 71. The cooling chamber 70 is disposed between the aerosolization chamber 40 and the aerosol outlet 30. The cooling chamber 70 is separated from the aerosolization chamber 40 by an inner wall 72. The cooling chamber 70 is substantially enclosed by a planar upper surface 110, a planar lower surface 120, and lateral sides 150, 160. The connecting channel 70 is disposed adjacent to the second lateral side 160 of the planar frame 100. The outlet channel 31 extends from the cooling chamber 70 to the aerosol outlet 30. The outlet channel 31 has a distal end 34 connected to the cooling chamber 70, and the distal end 34 is adjacent to the first lateral side 150 of the planar frame.

[0166] Figure 6 Shows Figure 5 the aerosol-generating article 1, where the arrows indicate the airflow through the aerosol-generating article 1. As Figure 6 shown, air can enter the planar frame 100 at the main air inlet 20. Then, the air crosses the air gap 41 in the aerosolization chamber 40 across the upper surfaces of the aerosol-generating substrates 51, 52, 53. The airflow diagonally crosses the aerosolization chamber 40 from the first lateral side 150 and the distal end 140 towards the second lateral side 160 and the proximal end 130. When the air approaches the proximal end 130 of the planar frame 100, it crosses the connecting channel 71 to reach the cooling chamber 70. Then, the air crosses the cooling chamber 70 towards the first lateral side 150 and the proximal end 130 of the planar frame 100, and crosses the outlet channel 31 to reach the aerosol outlet 30. When the air crosses the outlet channel 31, it moves away from the first lateral side 150 towards the longitudinal axis 101 of the planar frame 100.

[0167] Figure 7 Shows a cross-section through a fourth embodiment of the aerosol-generating article 1 according to the present disclosure. The fourth embodiment aerosol-generating article 1 is the same as the third embodiment aerosol-generating article 1 except that it includes a ventilation air inlet 60 and a ventilation air channel 61. The ventilation air inlet 60 is directly connected to the cooling chamber 70. The ventilation air channel 61 connects the ventilation air inlet 60 to the cooling chamber 70.

[0168] Figure 8 Shows the fourth embodiment aerosol-generating article 1 in an aerosol-generating system 3 including an aerosol-generating device 2.

[0169] The aerosol-generating device 2 includes a cavity 202 configured to receive the aerosol-generating article 1. The aerosol-generating system 3 is configured such that when the aerosol-generating article 1 is received in the aerosol-generating device 2, the ventilation air inlet 60 is outside the aerosol-generating device 2.

[0170] The aerosol-generating device 2 includes a control unit 206, a power source 207, and a power and data port 209. The aerosol-generating device 2 includes heating elements 203, 204, 205. The heating elements 203, 204, 205 are arranged in three sections. When the aerosol-generating article 1 is received in the aerosol-generating device 2, the heating elements 203, 204, 205 are close to the planar lower surface 120 of the aerosol-generating article 1. As Figure 9 best seen in, each section of the heating elements 203, 204, 205 is aligned with the corresponding sections 51, 52, 53 of the aerosol-generating article 1.

[0171] When the aerosol-generating article 1 is received in the aerosol-generating device 2, the main air inlet 20 of the aerosol-generating article is located within the aerosol-generating device 2. The aerosol-generating device 2 includes a device air inlet 208. When the aerosol-generating article 1 is received in the aerosol-generating device 2, the device air inlet 208 is aligned with the main air inlet 20 such that air can flow through the device air inlet 208, through the main air inlet 20, and through the aerosol-generating article 1.

[0172] In Figure 8 and 9 the aerosol-generating system 3 shown, the aerosol-generating article 1 shown includes an aerosolization chamber 40 defined between a planar upper surface 110 and a planar lower surface 120. However, the aerosol-generating article 1 may not include a planar upper surface 110, and the aerosolization chamber 40 may be defined between the planar lower surface 120 and the planar inner surface 210 of the aerosol-generating device 2.

[0173] It should be understood that the features of different embodiments may be combined.

[0174] For the purposes of this specification and the appended claims, unless otherwise indicated, all numbers expressing quantities, amounts, percentages, etc. should be understood to be modified in all instances by the term "about". Additionally, all ranges include the disclosed maximum and minimum points, and include any intermediate ranges therebetween, whether or not specifically enumerated herein. Thus, in this context, the number A is understood as A ± 10% A. In this context, the number A may be regarded as including values within the normal standard error for measurements of the property modified by the number A. In some cases used in the appended claims, the number A may deviate from the percentage recited above, provided that the amount by which A deviates does not substantially affect the basic and novel features of the claimed invention. Additionally, all ranges include the disclosed maximum and minimum points, and include any intermediate ranges therebetween, whether or not specifically enumerated herein.

Claims

1. An aerosol - generating article for use with an aerosol - generating device to form an inhalable aerosol, the aerosol - generating article comprising: A planar frame including a planar upper surface, a planar lower surface, a proximal end, a distal end, and lateral sides extending between the proximal end and the distal end; A main air inlet disposed on a first lateral side of the planar frame; An aerosol outlet disposed on the proximal end of the planar frame; An aerosolization chamber between the main air inlet and the aerosol outlet; And An aerosol - generating substrate located in the aerosolization chamber.

2. The aerosol - generating article according to claim 1, wherein the planar frame has a longitudinal axis, and the aerosol outlet is at or near the longitudinal axis.

3. The aerosol - generating article according to claim 1 or claim 2, wherein the main air inlet is disposed near the distal end of the planar frame.

4. The aerosol - generating article according to any one of the preceding claims, comprising a ventilation air inlet disposed between the aerosolization chamber and the aerosol outlet.

5. The aerosol - generating article according to claim 4, wherein the ventilation air inlet is disposed near the proximal end of the planar frame.

6. The aerosol - generating article according to claim 4 or claim 5, wherein the ventilation air inlet is disposed on the first lateral side of the planar frame.

7. The aerosol - generating article according to any one of claims 4 to 6, wherein the main air inlet and the ventilation air inlet are configured such that at most 30% of the air reaching the aerosol outlet comes from the ventilation air inlet.

8. The aerosol - generating article according to any one of claims 4 to 7, wherein the ventilation air inlet is positioned so as to be outside the aerosol - generating device when the aerosol - generating article is received in the aerosol - generating device.

9. The aerosol - generating article according to any one of the preceding claims, comprising an outlet channel extending from the aerosolization chamber to the aerosol outlet.

10. The aerosol - generating article according to claim 9, wherein the outlet channel has a distal end connected to the aerosolization chamber, the distal end being near a second lateral side of the planar frame, the second lateral side being opposite the first lateral side.

11. The aerosol - generating article according to claim 9 or claim 10 when dependent on any one of claims 4 to 7, wherein the ventilation air inlet is directly connected to the outlet channel.

12. The aerosol - generating article according to any one of the preceding claims, comprising a cooling chamber disposed between the aerosolization chamber and the aerosol outlet.

13. The aerosol - generating article according to claim 12, wherein the ventilation air inlet is directly connected to the cooling chamber.

14. An aerosol - generating system comprising an aerosol - generating device and an aerosol - generating article according to any one of the preceding claims, The aerosol - generating device includes a heating element.

15. An aerosol generating system for forming an inhalable aerosol, comprising an aerosol generating article and an aerosol generating device; The aerosol generating article comprises: A planar frame, the planar frame comprising a planar lower surface, a proximal end, a distal end, and a lateral side extending between the proximal end and the distal end; A main air inlet provided on a first lateral side of the planar frame; An aerosol outlet provided on the proximal end of the planar frame; An aerosol generating substrate, The aerosol generating device comprises: A heating element configured to heat the aerosol generating substrate to form an aerosol, And a device housing having a planar inner surface; Wherein the aerosol generating article is configured to be inserted into the device to form: An aerosolization chamber between the lower surface of the aerosol generating article and the inner surface of the device, the aerosol generating substrate being located in the aerosolization chamber.

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