SHISHA CARTRIDGE

Abstract

A shisha cartridge comprises a body defining a cavity. An aerosol-forming substrate is disposed in the cavity. The cartridge also comprises a heatable surface area. The ratio of the heatable surface area of the cartridge to the volume of the cavity is in a range from about 1 cm.sup.−1 to about 4 cm.sup.−1. The maximum inner width of the cavity may be 4 cm. The height of the cavity may be 3 cm or greater.

Claims

1. A shisha cartridge comprising: a body defining a cavity; an aerosol-forming substrate disposed in the cavity; and a heatable surface area in the cavity; wherein a ratio of the heatable surface area to a volume of the cavity is in a range from about 1 cm.sup.−1 to about 4 cm.sup.−1.

2. The shisha cartridge according to claim 1, wherein the ratio of the heatable surface area to the volume of the cavity is from about 1.2 cm.sup.−1 to about 3 cm.sup.−1.

3. The shisha cartridge according to claim 1, wherein the heatable surface area is from about 25 cm.sup.2 to about 100 cm.sup.2.

4. The shisha cartridge according to claim 1, wherein the heatable surface area is from about 25 cm.sup.2 to about 55 cm.sup.2.

5. The shisha cartridge according to claim 1, wherein the body has a length of about 10 cm or less.

6. The shisha cartridge according to claim 1, wherein the body has a length from about 3.5 cm to about 7 cm.

7. The shisha cartridge according to claim 1, wherein the body has an inner diameter of about 1 cm or greater.

8. The shisha cartridge according to claim 1, wherein the body has an inner diameter of about 1.5 cm to about 4 cm.

9. The shisha cartridge according to claim 1, wherein the volume of the cavity is from about 10 cm.sup.3 to about 50 cm.sup.3.

10. The shisha cartridge according to claim 1, wherein the volume of substrate in the cavity is from about 20 cm.sup.3 to about 25 cm.sup.3.

11. The shisha cartridge according to claim 1, wherein the aerosol-forming substrate comprises molasses.

12. The shisha cartridge according to claim 11, wherein a mass of the molasses is from about 3 g to about 25 g.

13. The shisha cartridge according to claim 1, wherein the heatable surface area is the surface area of the cavity.

14. The shisha cartridge comprising: a body defining a cavity having a maximum inner width of 4 cm; and an aerosol-forming substrate disposed in the cavity.

15. The shisha cartridge according to claim 14, wherein the cavity has a height of 3 cm or greater.

16. The shisha cartridge according to claim 15, wherein the height is greater than the width.

17. The shisha cartridge according to claim 15, wherein the cavity defines a heatable surface area, and wherein a ratio of the heatable surface area to a volume of the cavity is in a range from about 1 cm.sup.−1 to about 4 cm.sup.−1.

18. The shisha cartridge according to claim 17, wherein the cavity defines a cavity surface area, and wherein a ratio of the cavity surface area to a volume of the cavity is in a range from about 1 cm.sup.−1 to about 4 cm.sup.−1.

19. The shisha cartridge according to claim 1, wherein the body has a frustoconical shape.

20. The shisha cartridge according to claim 19, wherein the body comprises a top, a bottom and a sidewall extending between the top and the bottom, wherein the sidewall deviates from the longitudinal axis of the body at an angle of about 4.5°.

21. The shisha cartridge according to claim 1, wherein the body comprises a top, a bottom, a sidewall extending between the top and bottom and a bevelled edge between the bottom and the sidewall.

22. The shisha device according to claim 21, wherein the bevelled edge is at an angle to the bottom of between about 15° and about 20°.

23. A shisha system comprising: the shisha cartridge according to claim 1; and a shisha device comprising: a receptacle for receiving the cartridge; a heating element for heating the aerosol-generating substrate when the cartridge is received in the receptacle of the shisha device; a vessel having a liquid fill level and defining a head space above the liquid fill level; an aerosol conduit for conveying aerosol from the receptacle to below the liquid fill level in the vessel; and an outlet in communication with the head space.

Description

[0090] Reference will now be made to the drawings, which depict one or more aspects described in this disclosure. However, it will be understood that other aspects not depicted in the drawings fall within the scope and spirit of this disclosure. Like numbers used in the figures refer to like components. However, it will be understood that the use of a number to refer to a component in a given figure is not intended to limit the component in another figure labeled with the same number. In addition, the use of different numbers to refer to components in different figures is not intended to indicate that the different numbered components cannot be the same or similar to other numbered components. The figures are presented for purposes of illustration and not limitation. Schematic drawings presented in the figures are not necessarily to scale.

[0091] FIG. 1 is a schematic sectional view of a cartridge without aerosol-forming substrate.

[0092] FIG. 2 is a schematic sectional view of a cartridge with aerosol-forming substrate.

[0093] FIG. 3 is a top-down plan view of a top of a cartridge.

[0094] FIG. 4 is a bottom-up plan view of a bottom of a cartridge.

[0095] FIG. 5 is schematic perspective view of a cartridge.

[0096] FIG. 6 is a schematic top-down plan view of a cartridge with a top removed showing a thermal bridge disposed in a cavity.

[0097] FIG. 7 is a schematic top-down plan view of a cartridge with a top removed showing a thermal bridge disposed in a cavity.

[0098] FIGS. 8-9 are schematic drawings of sectional views of cartridges.

[0099] FIG. 10 is a schematic sectional view of a shisha device.

[0100] FIG. 11A is an image of a thermal bridge used in a cartridge.

[0101] FIG. 11B is a top-down image of a cartridge with its top removed. The thermal bridge of FIG. 11A is disposed in the cavity of the cartridge.

[0102] FIG. 11C is a side image of a cartridge having a sidewall slit for accommodating a portion of the thermal bridge, such as the thermal bridge depicted in FIG. 11A.

[0103] FIG. 11D is a side image of the cartridge depicted in FIG. 11C in which the thermal bridge of FIG. 11A is inserted.

[0104] FIG. 12 is a top-down image of a cartridge with its top removed, revealing a thermal bridge disposed in the cavity.

[0105] FIG. 13 is a graph showing the total aerosol mass per puff generated using a variety of cartridge designs.

[0106] FIG. 14 is a graph of heatable surface area (S.sub.H) obtainable by cartridges having various dimensions, with and without thermal bridges.

[0107] FIG. 15 is a plot of absolute and relative evaporated molasses for various cartridge designs.

[0108] FIG. 16 is a plot of total aerosol mass produced for various cartridge designs.

[0109] FIG. 17 is a plot of absolute and relative evaporated molasses for cartridges containing different amounts of molasses.

[0110] FIG. 18 is a plot of total aerosol mass produced for cartridges containing different amounts of molasses.

[0111] Referring to FIGS. 1-2, a cartridge 200 has body 210 defining a cavity 218 in which an aerosol-forming substrate 300 may be disposed. The body 210 includes a top 215, bottom 213, and a sidewall 212. The body 210 may be formed from one or more parts. For example, the top 215 or bottom 213 may be removably attached from the sidewall 212 to allow the aerosol-forming substrate 300 to be disposed in the cavity 218. The cartridge 200 has a length (I) and width (w) referred to herein as the inner diameter. The cartridge 200 has a heatable surface area (S.sub.H) inside the cavity 215, which is a surface area capable of transferring heat applied to the exterior of the body, for example, by a heating element of a shisha device, to aerosol-forming substrate 300 in the cavity 218. The cavity 218 has a volume such that the ratio of the ratio of the heatable surface area (S.sub.H) of the body 210 to the volume of the cavity 218 is in range from about 1 cm.sup.−1 to about 4 cm.sup.−1. The aerosol-forming substrate 300 occupies a volume within the cavity 218. Preferably, the ratio of heatable surface area of the body 210 in the cavity 218 (S.sub.H) to the volume of the aerosol-forming substrate 300 in the cavity 218 is in range from about 1 cm.sup.−1 to about 4 cm.sup.−1. Such ratios allow for the aerosol-forming substrate 300 to produce desired amount of aerosol mass without prematurely depleting the aerosol-forming substrate 300.

[0112] Referring now to FIGS. 3-4, the top 215 and bottom 213 of the body may have a plurality of apertures 217, 216 to allow air flow through the cartridge, when the cartridge is in use. The apertures 216, 217 of the top 215 and bottom 213 may be aligned. The apertures 217, 216 may be blocked when the cartridge is stored prior to use. For example, the apertures 216, 217 may be blocked by a releasable liner (not shown).

[0113] FIG. 5 is a schematic perspective view of a cartridge 200. The sidewall 212 defines a frustroconical shape. The bottom 213 defines a plurality of apertures to allow air flow through the cartridge 200. The top comprises a flange 219 that extends from the sidewall 212. The flange 219 may rest on shoulder of a receptacle of a shisha device so that cartridge 200 may be readily removed from the receptacle after use by grasping the flange.

[0114] FIG. 6 is a schematic top-down view into a cavity 218 of a cartridge 200. A thermal bridge having two arms 221, 223 that span the cavity 218 and contact the sidewall 212 is shown. The arms 221, 223 may also contact the bottom 213. The thermal bridge increases the heatable surface area in the cavity 218 (S.sub.H) relative to a cartridge of the same dimensions that does not include a thermal bridge.

[0115] FIG. 7 is a schematic top-down view into a cavity 218 of a cartridge 200. A cylindrical thermal bridge 220 is disposed in the cavity 218. The thermal bridge 220 contacts the bottom 213 of the cartridge 200. The thermal bridge 220 increases the heatable surface area in the cavity 218 (S.sub.H) relative to a cartridge of the same dimensions that does not include the thermal bridge.

[0116] FIGS. 8-9 are schematic sectional views of cartridges 200. The cartridges 200 have a sidewall 212 a top 215 and a bottom 213 that together define a cavity 218 into which an aerosol generating substrate (not shown) may be disposed. The cartridge 200 in FIG. 8 includes a generally flat bottom 213 with slightly rounded edges, and the cartridge 200 in FIG. 9 includes a generally frustoconical bottom 213. Otherwise, the cartridges 200 in FIGS. 8-9 are substantially the same.

[0117] The cartridges 200 have a flange 219 at the top 215. The flange 219 may rest on a shoulder of a receptacle of a shisha device so that cartridge 200 may be readily removed from the receptacle after use by grasping the flange. The flange may also help to prevent over-insertion of the cartridge 200 into the receptacle.

[0118] The cavity 218 has a maximum inner width (Wt) and a height (h). In the case of a frustoconical shaped cartridge 200, the maximum inner width (Wt) may be substantially at the top of the cartridge 200. The maximum inner width (Wt) in the example illustrated in FIG. 8 may be about 2.98 cm, and the height (h) may be about 3.63 cm. The bottom of the cavity 218 has a width (Wb). The width of the bottom of the cavity (Wb) may be about 2.43 cm.

[0119] The bottom 213 of the container 200 in FIG. 9 is generally frustoconical. As can be seen in FIG. 9, width Wb is generally measured at a position where the angle of the sidewall 212 changes plane. In some embodiments, such as the example of FIG. 9, the sidewall of the bottom portion 213 deviates from a flat bottom at an angle β. Angle β may be about 18°. The width (Wc) of the smaller bottom portion may be about 0.84 cm. We may be measured at a longitudinal position at which the width of the cavity is at a minimum. In the example of FIG. 9, the maximum inner width (Wt) may be about 2.98 cm, the height (h) may be about 3.83 cm, the bottom width (Wb) may be about 2.43 cm and the width of the smaller bottom portion (Wc) may be about 0.84 cm.

[0120] The body of the cartridges 200 in FIGS. 8-9 are generally frustoconical. The sidewalls 212 deviate from the longitudinal axis at an angle α. Angle α may be about 4.5°.

[0121] The cartridge 200 in FIG. 8 has in internal surface area defined by the sidewalls 212, the top 215, and the bottom 213 of about 41.5 cm.sup.2. The internal surface area of the cavity 218 defined by the sidewalls 212 only is about 29.6 cm.sup.2. The volume defined by the cavity 218 is about 20.6 cm.sup.3. The ratio of the internal surface area of the cavity 218 defined by the sidewalls 212 to the volume defined by the cavity 218 is about 1.4 cm.sup.−1. The ratio of the internal surface area of the cavity 218 defined by the sidewalls 212, the top 215, and the bottom 213 to the volume defined by the cavity 218 is about 2 cm.sup.−1.

[0122] The cartridge 200 in FIG. 9 has in internal surface area defined by the sidewalls 212, the top 215, and the bottom 213 of about 42 cm.sup.2. The internal surface area of the cavity 218 defined by the sidewalls 212 only is about 29.9 cm.sup.2. The volume defined by the cavity 218 is about 21.4 cm.sup.3. The ratio of the internal surface area of the cavity 218 defined by the sidewalls 212 to the volume defined by the cavity 218 is about 1.4 cm.sup.−1. The ratio of the internal surface area of the cavity 218 defined by the sidewalls 212, the top 215, and the bottom 213 to the volume defined by the cavity 218 is about 2 cm.sup.−1.

[0123] FIG. 10 is a schematic sectional view of an example of a shisha device 100. The device 100 includes a vessel 17 defining an interior volume configured to contain liquid 19 and defining a headspace outlet 15 above a fill level for the liquid 19. The liquid 19 preferably comprises water, which may optionally be infused with one or more colorants, one or more flavorants, or one or more colorants and one or more flavorants. For example, the water may be infused with one or both of botanical infusions or herbal infusions.

[0124] The device 100 also includes an aerosol-generating element 130. The aerosol-generating element 130 includes a receptacle 140 configured to receive a cartridge 200 containing an aerosol-generating substrate. The aerosol-generating element 130 also includes a heating element 160 that forms at least one surface of the receptacle 140. In the depicted embodiment, the heating element 160 defines the top and side surfaces of the receptacle 140. The aerosol-generating element 130 also includes a fresh air inlet channel 170 that draws fresh air into the device 100. A portion of the fresh air inlet channel 170 is formed by the heating element 160 to heat the air before the air enters the receptacle 140. The pre-heated air then enters the cartridge 150 (or substrate that is not a cartridge), which is also heated by heating element 160, to carry aerosol generated by aerosol generating substrate. The air exits an outlet of the aerosol-generating element 130 and enters a conduit 190.

[0125] The conduit 190 carries the air and aerosol into the vessel 17 below the level of the liquid 19. The air and aerosol may bubble through the liquid 19 and exit the headspace outlet 15 of the vessel 17. A hose 20 may be attached to the headspace outlet 15 to carry the aerosol to the mouth of a user. A mouthpiece 25 may be attached to, or form a part of, the hose 20.

[0126] The air flow path of the device, in use, is depicted by thick arrows in FIG. 10.

[0127] The mouthpiece 25 may include an activation element 27. The activation element 27 may be a switch, button or the like, or may be a puff sensor or the like. The activation element 27 may be placed at any other suitable location of the device 100. The activation element 27 may be in wireless communication with the control electronics 30 to place the device 100 in condition for use or to cause control electronics to activate the heating element 160; for example, by causing power supply 35 to energize the heating element 140.

[0128] The control electronics 30 and power supply 35 may be located in any suitable position of the aerosol generating element 130 other than the bottom portion of the element 130 as depicted in FIG. 1.

[0129] FIGS. 11-18 are discussed below in the Examples. FIG. 11A is an image of an embodiment of a thermal bridge used in a cartridge. FIG. 11B is a top-down image of an embodiment of a cartridge with its top removed. The thermal bridge of FIG. 9A is disposed in the cavity of the cartridge in FIG. 11B. FIG. 11C is a side image of an embodiment of a cartridge having a sidewall slit for accommodating a portion of the thermal bridge, such as the thermal bridge depicted in FIG. 11A. FIG. 11D is a side image of the cartridge depicted in FIG. 11C in which the thermal bridge of FIG. 11A is inserted. FIG. 12 is a top-down image of an embodiment of a cartridge with its top removed, revealing a thermal bridge disposed in the cavity. FIG. 13 is a graph showing the total aerosol mass per puff generated using a variety of cartridge designs. FIG. 14 is a graph of heatable surface area (S.sub.H) obtainable by cartridges having various dimensions, with and without thermal bridges. FIG. 15 is a plot of absolute and relative evaporated molasses for various cartridge designs. FIG. 16 is a plot of total aerosol mass produced for various cartridge designs. FIG. 17 is a plot of absolute and relative evaporated molasses for cartridges containing different amounts of molasses. FIG. 18 is a plot of total aerosol mass produced for cartridges containing different amounts of molasses.

[0130] The specific embodiments described above are intended to illustrate the invention. However, other embodiments may be made without departing from the scope of the invention as defined in the claims, and it is to be understood that the specific embodiments described above are not intended to be limiting.

[0131] As used herein, the singular forms “a,” “an,” and “the” encompass embodiments having plural referents, unless the content clearly dictates otherwise.

[0132] As used herein, “or” is generally employed in its sense including “and/or” unless the content clearly dictates otherwise. The term “and/or” means one or all the listed elements or a combination of any two or more of the listed elements.

[0133] As used herein, “have,” “having,” “include,” “including,” “comprise,” “comprising” or the like are used in their open-ended sense, and generally mean “including, but not limited to”. It will be understood that “consisting essentially of,” “consisting of,” and the like are subsumed in “comprising,” and the like.

[0134] The words “preferred” and “preferably” refer to embodiments of the invention that may afford certain benefits, under certain circumstances. However, other embodiments may also be preferred, under the same or other circumstances. Furthermore, the recitation of one or more preferred embodiments does not imply that other embodiments are not useful, and is not intended to exclude other embodiments from the scope of the disclosure, including the claims.

[0135] Any direction referred to herein, such as “top,” “bottom,” “left,” “right,” “upper,” “lower,” and other directions or orientations are described herein for clarity and brevity are not intended to be limiting of an actual device or system. Devices and systems described herein may be used in a number of directions and orientations.

EXAMPLES

Example 1: Cylindrical Cartridges

[0136] Presented below are non-limiting examples illustrating the effect of various cartridge designs on production of aerosol from aerosol-forming substrate disposed in shisha cartridges. Each cartridge contained 10 g of commercially available tobacco molasses (Al-Fakher) having a calculated volume of about 31.5 cm.sup.3.

[0137] Three cartridge designs were tested. Each cartridge was cylindrical and made from aluminium. The cartridges had a length of 55 mm and an inner diameter of 27 mm. One cartridge contained no thermal bridge and had a heatable surface area in the cavity (S.sub.H) of about 52 cm.sup.2. Another cartridge included a 0.2 mm thick copper plate (see FIGS. 11A-D) in the shape of a T, which spanned the cavity to provide a total S.sub.H of about 69 cm.sup.2. Another cartridge further included a 0.2 mm thick copper plate having an S shaped cross section that spanned the cavity (see FIG. 12) to provide a S.sub.H of about 90 cm.sup.2.

[0138] The cartridges were placed in communication with a conduit. A frustroconical nozzle made of high temperature epoxy resin having an exit orifice of 3 mm was incorporated into the conduit. The exit orifice of the nozzle was about 55 mm from cartridge outlet. The conduit extended below a liquid level in a vessel. Aerosol exiting an outlet in communication with a headspace above the liquid level of the vessel was collected.

[0139] The cartridges were heated using a wire wound heating element set at a constant temperature of 200 degree Celsius.

[0140] The generated aerosol was collected using a total of 10 Cambridge pads whose weight was recorded before and after the shisha experience. The total duration of the experience corresponds to 105 puffs. To achieve the desired puffing experience, four Programmable Dual Syringe Pumps (PDSP) manufactured by Pomac BV (Tolbert, Groninen, Netherlands) were used simultaneously to create the following puffing regime: [0141] Puff volume: 530 mL [0142] Puff duration: 2600 ms [0143] Duration between puffs: 17 s

[0144] The experimental setup was arranged such that only two of the ten Cambridge pads collect the generated aerosol at a given moment. Every 21 puffs, a check valve ensured that the aerosol was diverted to the correct pair of Cambridge pads. As a consequence, the production of aerosol could be monitored as a function of time.

[0145] The evaporated mass of the molasses was determined by comparing the weight of the molasses before and after the shisha experience.

[0146] In addition, the total aerosol mass and evaporated mass was determined for a charcoal operated shisha using similar conditions.

[0147] The results from the various cartridge designs are shown in FIG. 13 and Table 1. In FIG. 13 the TAM per puff is shown after the initial 20 puffs. In FIG. 13, the curve labeled (1) represents the results from the charcoal operated shisha device, the curve labeled (2) represents the cartridge having the S.sub.H of about 52 cm.sup.2, the curve labeled (3) represents the cartridge having the S.sub.H of about 69 cm.sup.2, and the curve labeled (4) represents the cartridge having the S.sub.H of about 90 cm.sup.2.

TABLE-US-00001 TABLE 1 TAM and mass evaporated Cartridge Cartridge Cartridge (S.sub.H = 52 cm.sup.2) (S.sub.H = 69 cm.sup.2) (S.sub.H = 90 cm.sup.2) Puff Charcoal (mg/puff) (mg/puff) (mg/puff) 20 12.7 8.7 9.5 12.0 40 17.8 12.7 14.5 17.0 60 18.3 15.9 18.0 19.7 80 16.6 16.9 18.9 20.3 106 14.6 17.3 19.2 19.2 Total 1696 mg 1370 mg 1684 mg 1853 mg Evapo- 3.5 g 2.8 g 3.41 g 3.97 g rated

[0148] The cartridges tested had a ratio of S.sub.H to volume of aerosol-forming substrate (tobacco molasses) of between 1.5 cm.sup.−1 (for the S.sub.H=52 cm.sup.2 cartridge) and 3 cm.sup.−1 (for the S.sub.H=90 cm.sup.2).

[0149] The charcoal operated shisha used for these experiments consumed 3.5 g having a S.sub.H of 25 cm.sup.2. Since the thermal transfer through convection is much smaller in the electric shisha, only 2.8 g are consumed for S.sub.H=52 cm.sup.2. As a consequence, the total TAM collected for the electrically heated shisha is only ˜80% of the charcoal operated shisha for this cartridge (1700 mg vs. 1370 mg). Notably, the aerosol mass production was substantially less during the first 21 puffs where a TAM of 8.7 mg/puff was collected for the S.sub.H=52 cm.sup.2 cartridge relative to the 12.7 mg/puff obtained with the charcoal operated shisha. However, increasing S.sub.H to 90 cm.sup.2 brought the results obtained with the electric shisha to values similar to the charcoal operated shisha. In this case, the consumption of molasses increased to 3.9 g and the total TAM collected to 1850 mg, and the TAM collected during the first puffs increases to 12.0 mg/puff.

[0150] To illustrate design considerations to achieve a desired ratio of S.sub.H to volume of aerosol-forming substrate, reference is made to FIG. 14. In FIG. 14, the bottom trace indicates the S.sub.H calculated for a cylinder with a volume of 31.5 cm.sup.3 of different diameters. The corresponding length is shown on the upper x-axis. The calculated results show that cartridges with a length of almost 18 cm are needed to achieve a S.sub.H of 90 cm.sup.2 if not thermal bridge is employed. However, such lengths are not practical for most shisha devices.

[0151] The trace labelled D/3 indicates the S.sub.H calculated for a cylinder having the same dimensions as the bottom trace, but with a cylindrical thermal bridge having a diameter equivalent to a third of the cartridge's diameter. The trace labelled D/2 indicates the S.sub.H calculated for a cylinder having the same dimensions as the bottom trace, but with a cylindrical thermal bridge having a diameter equivalent to half the cartridges diameter. As shown, the thermal bridges quickly increase the S.sub.H to provide a cartridge having more desirable dimensions. For example, the cartridges may have a length of less than 10 cm and have a S.sub.H of 90 cm.sup.2.

Example 2: Frustroconical Cartridges

[0152] The effect of cartridge shape on various performance aspects were tested. The performance of cartridges having various frustroconical designs were compared to a cylindrical cartridge.

[0153] The cartridges were cylindrical and made from aluminium. The cylindrical cartridge had a length of 41.25 mm and an inner diameter of 27 mm (C 27). The frustroconical cartridges each had a length of 41.25 mm and an upper inner diameter of 27 mm. The lower inner diameters of the frustroconical cartridges were 22 mm (LD 22), 18 mm (LD 18) and 14 mm (LD 14). The tops and bottoms of each cartridge contained 19 holes, each hole having a 2 mm diameter.

[0154] Substrate temperature and total aerosol mass produced from each cartridge was tested as indicated in Example 1 above.

[0155] In one experiment, each cartridge contained 10 g of commercially available tobacco molasses (Al-Fakher), and the temperature of the substrate was monitored as the cartridge was heated, and the time for the substrate to reach 80° C. was determined. The results are presented below in Table 2.

TABLE-US-00002 TABLE 2 Amount of time for substrate to reach 80° C. Cartridge Time (min) C 27 4 LD 22 4.5 LD 18 5 LD 14 5.5

[0156] The time to reach 80° C. may be directly related to time to first puff. Accordingly, a cylindrical cartridge (C 27) may allow for more rapid initial heating and allow for the first puff to be taken more quickly. However, the longer times associated with the frustroconical cartridges (LD 22, LD 18, and LD 14) may more closely mimic time to first puff associated with conventional charcoal-based shisha devices and thus may maintain certain ritual aspects of such conventional devices.

[0157] In another experiment, C 27, LD 22, and LD 18 cartridges containing 10 g of molasses were heated and total aerosol mass and mass of evaporated molasses were measured.

[0158] Relative to the C 27 cartridge, the LD 22 cartridge was heated for an additional 30 seconds prior to testing and the LD 18 cartridge was heated for an additional 60 seconds based on the results presented in Table 2 above.

[0159] The mass of evaporated molasses is shown in FIG. 15, and the total aerosol mass produced is shown in FIG. 16. As shown in FIG. 16, the most total aerosol mass was observed with the LD 22 cartridge. As indicted in FIG. 15, the amount of evaporated molasses increased with decreasing lower diameters of the cartridges.

[0160] In another experiment, the total aerosol mass and evaporated molasses was measured for a C 27 cartridge containing 10 g of molasses and for LD 22 cartridges containing 10 g, 8 g, and 6 g of molasses. Relative to the C 27 cartridge, the LD 22 cartridges were heated for an additional 30 seconds prior to testing based on the results presented in Table 2 above.

[0161] The mass of evaporated molasses is shown in FIG. 17, and the total aerosol mass produced is shown in FIG. 18. As shown in FIG. 18, the total aerosol mass was similar between LD 22 cartridges containing 10 g and 8 g of molasses, suggesting that less molasses may be employed. In addition, the LD 22 cartridges containing 6 g of molasses exhibited increased total aerosol mass for the first sixty puffs relative to the C 27 cartridge containing 10 g of molasses, suggesting that shape of cartridge may have a substantial impact on total aerosol production and amount of molasses that may be employed.

[0162] Thus, cartridges for shisha devices are described. Various modifications and variations of the invention will be apparent to those skilled in the art without departing from the scope and spirit of the invention. Although the invention has been described in connection with specific preferred embodiments, it should be understood that the invention as claimed should not be unduly limited to such specific embodiments. Indeed, various modifications of the described modes for carrying out the invention which are apparent to those skilled in the mechanical arts, chemical arts, and aerosol generating article manufacturing or related fields are intended to be within the scope of the following claims.