Aerosol generating component for a tobacco heating device and mouthpiece therefor

Abstract

To provide an aerosol generating component for a tobacco heating device that reduces the temperature of components in contact with the mouth and fingers of a user.SOLUTION: An aerosol generating component 100 for a tobacco heating device comprises an aerosol generating material 50, a mouth piece 10 downstream of the aerosol generating material, a first wrapper 60 comprising a first sheet material and circumscribing at least a portion of the aerosol generating material, and a second wrapper side 15a comprising a second sheet material and circumscribing at least a portion of the mouth piece, the side 15b. The thermal conductivity of the first sheet material is higher than the thermal conductivity of the second sheet material.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to aerosol-generating components for tobacco heating devices, mouthpieces therefor, and methods of making the aerosol-generating components and mouthpieces. [Background technology]

[0002] Certain tobacco industry products generate aerosols during use, which are inhaled by the user. For example, smoking articles, such as cigarettes, burn tobacco to produce tobacco smoke during use. Tobacco heating devices heat aerosol-generating materials, such as tobacco, to form an aerosol by heating the material without burning it. Such tobacco industry products typically include a mouthpiece through which the aerosol passes to the user's mouth. Summary of the Invention

[0003] According to some embodiments described herein, in a first aspect, there is provided an aerosol-generating component for a tobacco heating device, the aerosol-generating component comprising: an aerosol-generating material; a mouthpiece downstream of the aerosol-generating material; a first wrapper comprising a first sheet material and surrounding at least a portion of the aerosol-generating material; and a second wrapper comprising a second sheet material and surrounding at least a portion of the mouthpiece, wherein the thermal conductivity of the first sheet material is higher than the thermal conductivity of the second sheet material.

[0004] The thermal conductivity of the first sheet material is 0.06 Wm -1 K -1 It can be larger than that.

[0005] The thermal conductivity of the second sheet material is 0.06 Wm -1 K -1 It can be smaller than

[0006] The density of the first sheet material can be greater than the density of the second sheet material.

[0007] The second wrapper may have a greater thickness than the first wrapper.

[0008] According to some embodiments described herein, in a second aspect, there is provided a mouthpiece for an aerosol-generating component for a tobacco heating device, the mouthpiece comprising one or more wrappers, at least one of which has a viscosity of 0.2 g / cm 3 ~0.45g / cm 3 The sheet material has a density in the range of .

[0009] At least one of the one or more wrappers according to the second aspect has a tensile strength of 0.30 g / cm 3 ~0.45g / cm 3 The sheet material may have a density in the range of .

[0010] The wrapper or wrappers according to the second aspect, or each of the wrappers, may have a thickness in the range of 20 μm to 100 μm. The wrapper or wrappers according to the second aspect, or each of the wrappers, may have a thickness in the range of 30 μm to 70 μm.

[0011] The mouthpiece according to the second aspect may comprise a plurality of flaps, at least one of which comprises a porous material.

[0012] The mouthpiece according to the second aspect may comprise a body of filter material, at least one of the wrappers partially surrounding the body of filter material, and at least one of the wrappers partially surrounding the body of filter material having a density of 0.2 g / cm 3 ~0.45g / cm 3 This includes materials having densities in the range of

[0013] The mouthpiece according to the second aspect may further comprise a flavor-altering additive disposed within the body of filter material.

[0014] The flavor modifying additive may be contained within a breakable capsule.

[0015] The mouthpiece according to the second aspect may further include ventilation holes formed in the horn.

[0016] According to some embodiments described herein, in a third aspect there is provided an aerosol-generating component for a tobacco heating device, the aerosol-generating component comprising a mouthpiece according to the second aspect described above.

[0017] The aerosol-generating component according to the third aspect may further comprise an aerosol-forming material, which may comprise a tobacco material.

[0018] The components of the first and second aspects above may be substantially cylindrical in shape and may have a circumference in the range of 16mm to 19mm.

[0019] According to some embodiments described herein, in a fourth aspect, there is provided a method of manufacturing an aerosol-generating component for a tobacco heating device, the method comprising, in any order: enclosing the aerosol-generating material in a first wrapper comprising a first sheet material such that the first wrapper surrounds at least a portion of the aerosol-generating material; positioning a mouthpiece downstream of the aerosol-generating material; encasing the mouthpiece within a second wrapper comprising a second sheet material such that the second wrapper surrounds at least a portion of the mouthpiece; The thermal conductivity of the first sheet material is greater than the thermal conductivity of the second sheet material.

[0020] According to some embodiments described herein, in a fifth aspect, there is provided a method of manufacturing a mouthpiece according to the second aspect described above, the method comprising providing a body of filter material; 3 ~0.45g / cm 3and wrapping a sheet material having a density in the range of about 1 / 2 to about a body of filter material.

[0021] Embodiments of the present invention will now be described, by way of example only, with reference to the accompanying drawings, in which: [Brief explanation of the drawings]

[0022] [Figure 1] 1 is a cross-sectional side view of a tobacco industry product including a mouthpiece. [Figure 2] 1 is a cross-sectional side view of a further tobacco industry product including a mouthpiece; [Figure 3] FIG. 3 is a cross-sectional view of the mouthpiece shown in FIG. 2. [Figure 4] FIG. 1 is a flow diagram illustrating a method of manufacturing an aerosol-generating component for a tobacco heating device. [Figure 5] FIG. 1 is a flow diagram illustrating a method of manufacturing a mouthpiece. DETAILED DESCRIPTION OF THE INVENTION

[0023] As used herein, the term "tobacco industry products" is intended to include smoking articles, including combustible smoking articles and their components, such as cigarettes, cigarillos, cigars, pipe or rolling tobacco (whether based on tobacco, tobacco derivatives, effervescent tobacco, reconstituted tobacco, tobacco substitutes, or other smoking materials), electronic smoking articles and their components, such as e-cigarettes, heating devices that release compounds from a substrate material without combustion (the substrate material can be tobacco, tobacco derivatives, effervescent tobacco, reconstituted tobacco, tobacco substitutes, or other smoking materials), their components, such as tobacco heating products and components of tobacco heating products, including aerosol-generating components and mouthpieces for such components, hybrid systems for generating aerosols from combinations of substrate materials, such as hybrid systems including liquid, gel, or solid substrates, and aerosol-free nicotine delivery articles and their components, such as articles containing breathable powders. The above article components include consumable smoking article components, mouthpieces, filter units, filter plugs, filter inserts, and tubes for use in products such as smoking articles.

[0024] The tobacco industry products described herein can be consumable components for use in heating devices, such as aerosol-generating components for tobacco heating devices. Alternatively, the tobacco industry products described herein can be combustion smoking articles selected from the group consisting of cigarettes, cigarillos, and cigars.

[0025] Tobacco industry products, such as consumable components and smoking articles, are often named according to the length of the product: "regular" (usually in the 68-75 mm range, e.g., about 68 mm to about 72 mm), "short" or "mini" (68 mm or less), "king size" (usually in the 75-91 mm range, e.g., about 79 mm to about 88 mm), "long" or "super king" (usually in the 91-105 mm range, e.g., about 94 mm to about 101 mm), and "ultra long" (usually in the 91-105 mm range, e.g., about 94 mm to about 101 mm).

[0026] They are also named according to the circumference of the product: "Regular" (approximately 23-25mm), "Wide" (over 25mm), "Slim" (approximately 22-23mm), "Demi-Slim" (approximately 19-22mm), "Super Slim" (approximately 16-19mm), and "Micro Slim" (less than approximately 16mm).

[0027] Thus, a cigarette in a king size super slim configuration, for example, would have a length of about 83 mm and a circumference of about 17 mm. Regular king size cigarettes, preferred by many consumers, have a circumference of 23-25 ​​mm and an overall length of 75-91 mm.

[0028] Each configuration can be manufactured with a different mouthpiece length, with smaller mouthpieces generally being used with smaller length and circumference configurations. Typically, the mouthpiece length will range from about 15 mm, associated with a short, regular configuration, to 30 mm, associated with an ultra-long, super slim configuration. The tipping paper will be longer than the mouthpiece, e.g., 3-10 mm, so that the tipping paper covers the mouthpiece and overlaps the tobacco rod to connect the mouthpiece to the tobacco rod.

[0029] Tobacco industry products, including smoking articles and their components, aerosol-generating components and mouthpieces described herein, can be made in any of the configurations described above, including, but not limited to:

[0030] As used herein, the terms "upstream" and "downstream" are relative terms defined with respect to the direction of mainstream aerosol (e.g., smoke) being drawn through a tobacco industry product or component in use.

[0031] The filter material described herein can include cellulose acetate fiber tow. The filter material can also be formed using other materials used to form fibers, such as polyvinyl alcohol (PVOH), polylactic acid (PLA), polycaprolactone (PCL), poly(1-4 butanediol succinate) (PBS), poly(butylene adipate-cotterephthalate) (PBAT), starch-based materials, paper, cotton, aliphatic polyester materials, and polysaccharide polymers, or combinations thereof. The filter material can be plasticized with a plasticizer suitable for the filter material, such as triacetin, when the filter material is cellulose acetate tow, or can be unplasticized. The tow can have any suitable specifications, such as fibers with a "Y" shape or other cross-section, a filament denier of 2.5 to 15 denier per filament, e.g., 8.0 to 11.0 denier per filament, and a total fineness of 5,000 to 50,000, e.g., 10,000 to 20,000.

[0032] As used herein, the term "tobacco material" refers to any material containing tobacco or its derivatives or substitutes. The term "tobacco material" can include one or more of tobacco, tobacco derivatives, foamed tobacco, reconstituted tobacco, or tobacco substitutes. Tobacco materials can include one or more of ground tobacco, tobacco fiber, cut tobacco, extruded tobacco, tobacco stems, reconstituted tobacco, and / or tobacco extract.

[0033] As used herein, the terms "flavoring agent" and "flavoring agent" refer to materials that, where local regulations permit, can be used to create a desired taste or aroma in products for adult consumers. They include extracts (e.g., licorice, hydrangea, magnolia leaf, chamomile, fenugreek, clove, menthol, Japanese mint, aniseed, cinnamon, herbs, wintergreen, cherry, berry, peach, apple, Drambuie, bourbon, Scotch, whiskey, spearmint, peppermint, lavender, cardamom, celery, cascarilla, nutmeg, sandalwood, bergamot, geranium, honey essence, rose oil, vanilla, lemon oil, orange oil, cassia, caraway, cognac, jasmine, ylang-ylang, They may contain additives such as sage, fennel, bell pepper, ginger, anise, coriander, coffee, or mint oil derived from any species of Mentha, flavor enhancers, bitter taste receptor site blockers, sensory receptor site activators or stimulants, sugars and / or sugar substitutes (e.g., sucralose, acesulfame potassium, aspartame, saccharin, cyclamate, lactose, sucrose, glucose, fructose, sorbitol, or mannitol), and other additives such as charcoal, chlorophyll, minerals, botanicals, or breath fresheners. They may be imitation, synthetic, or natural ingredients, or mixtures thereof. They may be in any suitable form, such as an oil, liquid, or powder.

[0034] In the figures described herein, like reference numerals are used to illustrate equivalent features, items or components.

[0035] FIG. 1 is a cross-sectional side view of a consumable component 100 for use in a tobacco industry product, in this case a heating device.

[0036] The consumable component 100 comprises a mouthpiece 10 and a cylindrical rod of aerosol-forming material 50, in this case tobacco material, connected to the mouthpiece 10. In this example, the consumable component 100 has a circumference of about 17 mm (i.e., a super slim configuration).

[0037] In other examples, the tobacco industry product may be a smoking article, such as a cigarette of any of the configurations described herein, in which the mouthpiece may include a filter for filtering smoke produced by the smoking article.

[0038] The rod of aerosol-generating material 50 is wrapped with a first wrapper 60 such that the first wrapper 60 surrounds the sides of the rod of aerosol-generating material 50. In this case, the first wrapper 60 is made of paper. The first wrapper 60 directly contacts the rod of aerosol-generating material 50. The first wrapper 60 has a density of 0.60 g / cm in this example. 3 It has a thickness of 40 μm and a density of 24 g / m 2 In an alternative example, the first wrapper 60 is formed from a material having a basis weight of 0.5 to 1.0 g / cm 3 , for example, 0.50 to 0.70 g / cm 3 The rod of aerosol-generating material 50 is 42 mm long, but can be any length between 20 mm and 80 mm, such as between 30 mm and 60 mm, or between 35 mm and 55 mm. A connecting wrapper 70, in this case made of paper, overlies the first wrapper 60 and connects the mouthpiece 10 to the rod of aerosol-generating material 50.

[0039] The consumable component 10 includes one or more secondary wrappers, in this case an inner wrapper 15a and an outer wrapper 15b, each at least partially surrounding the mouthpiece 10. Each of the inner wrapper 15a and outer wrapper 15b is formed from a sheet material, in this case paper. In this example, the density of the outer secondary wrapper 15b is 0.38 g / cm 3 The outer second wrapper 15b has a thickness of 60 μm and a weight of 23 g / m 2 At least one of the inner and outer second wrappers 15a, 15b has a basis weight of 0.2 to 0.45 g / cm 3The sheet material forming at least one of the inner and outer second wrappers 15a, 15b may include a sheet material having a density in the range of 0.30 g / cm 3 ~0.45g / cm 3 , or 0.35g / cm 3 ~0.45g / cm 3 The density can range from 0.01 to 0.1.

[0040] The sheet material forming the first wrapper 60 has a higher thermal conductivity than that of the sheet material forming one or each of the second wrappers 15a, 15b. This can be achieved by selecting appropriate values ​​for the densities of the first and second wrappers 60, 15a, 15b. The thermal conductivity of the sheet material forming the first wrapper 60 is 0.07 Wm -1 K -1 In another example, the thermal conductivity of the sheet material forming the first wrapper 60 is 0.06 Wm -1 K -1 The thermal conductivity of the sheet material forming the first wrapper 60 can be, for example, 0.06 Wm -1 K -1 ~1.2Wm -1 K -1 Between, for example, 0.08 and 1.1 Wm -1 K -1 The thermal conductivities stated herein are those of the material forming the relevant sheet wrapper, regardless of the thickness of the wrapper.

[0041] The thermal conductivity of the sheet material forming the outer second wrapper 15b is 0.04 Wm -1 K -1 and the thermal conductivity of the sheet material forming the inner second wrapper 15a is 0.07 Wm -1 K -1 In another example, the thermal conductivity of the sheet material forming one or both of the inner and outer second wrappers 15a, 15b is 0.06 Wm -1 K -1 Less than, for example, 0.02 Wm -1 K -1 ~0.06Wm -1 K-1 It is between.

[0042] Thermal conductivity can be measured using known techniques, such as using a Model C-2500-HTS Thermal Conductivity System available from International Thermal Instrument Company, Inc., Del Mar, Calif., USA. Instrument calibration and test characteristics can follow current ASTM C177 standards.

[0043] In this example, mouthpiece 10 is described as including two second wrappers 15a, 15b, but the number of second wrappers is not limited thereto. Mouthpiece 10 can include three or more second wrappers, or alternatively, can include a single second wrapper, whether it is inner second wrapper 15a or outer second wrapper 15b. In cases where three second wrappers are present, additional intermediate wrappers can be provided between the inner and outer second wrappers 15a, 15b. The outermost of the at least three second wrappers 15b can be arranged to have low density and / or low thermal conductivity characteristics as defined herein.

[0044] The connecting wrapper 70 may alternatively be a second wrapper or may be one of a plurality of second wrappers. In particular, the density of the material forming the connecting wrapper 70 is 0.38 g / cm 3 The connecting wrapper 70 can have a thickness of about 60 μm and a weight of about 23 g / m 2 Alternatively, the density of the material forming the connecting wrapper 70 may be between 0.2 and 0.45 g / cm. 3 range, e.g., 0.30 g / cm 3 ~0.45g / cm 3 , or 0.35g / cm 3 ~0.45g / cm 3 The thermal conductivity of the sheet material forming the connecting wrapper 70 can be in the range of 0.04 Wm -1 K -1 In another example, the thermal conductivity of the connection wrapper 70 can be 0.06 Wm-1 K -1 Less than, for example, 0.02 Wm -1 K -1 and 0.06Wm -1 K -1 It is between.

[0045] During use, component 100 can be inserted into a heating device (not shown) such that at least a portion of mouthpiece 10 protrudes from the heating device and can be inserted into a user's mouth. An aerosol is generated by heating aerosol-generating material 50 using the heating device. The aerosol generated by aerosol-generating material 50 passes through mouthpiece 10 and into the user's mouth.

[0046] Because the sheet material forming the first wrapper 60 has a higher thermal conductivity than that of the sheet material forming one or both of the second wrappers 15 a, 15 b, heat transfer into, out of, and within the component 100 can be improved compared to component designs where similar thermal conductivities are exhibited by the first and second wrappers. The component construction described herein results in more heat being conducted into the aerosol-forming material 50 through each unit thickness of the first wrapper 60 than through each unit thickness of the second wrapper(s) that at least partially surround the mouthpiece 10. This construction allows for better heat conduction into the rod of aerosol-forming material 50 during use to facilitate aerosol generation, while simultaneously reducing heat conduction through one or both of the second wrappers 15 a, 15 b, reducing the temperature of the component that contacts the user's mouth or fingers.

[0047] One or both of the second wrappers 15a, 15b may have a thickness greater than that of the first wrapper 60. For example, the thickness of one or both of the second wrappers 15a, 15b may be between 42 μm and 80 μm, e.g., between 42 μm and 70 μm, or between 50 μm and 70 μm. The thickness of the first wrapper 60 may be between 20 and 50 μm, e.g., between 30 and 45 μm.

[0048] Alternatively or additionally, the density of the sheet material forming the first wrapper 60 may be higher than the density of the sheet material forming one or both of the second wrappers 15 a, 15 b. Again, this aids in heat conduction through the first wrapper 60 compared to heat conduction through one or both of the second wrappers 15 a, 15 b.

[0049] As an example, 0.2 g / cm 3 ~0.45g / cm 3 Providing the second wrapper with a sheet material having a density in the range of 0.50 g / cm provides a reduction in heat conduction through the wrapper. The sheet material forming the first wrapper 60 may be in the range of 0.50 g / cm. 3 ~0.70g / cm 3 The density of the granular material may be 0.015 to 0.015.

[0050] In some examples, one or both of the second wrappers 15a, 15b can have a thickness in the range of 20 μm to 100 μm, or in the range of 30 μm to 70 μm. For example, one or each of the second wrappers 15a, 15b can have a thickness of about 60 μm. For example, the outer second wrapper can have a thickness of about 60 μm. The inner second wrapper can have a thickness of about 40 μm.

[0051] One or both of the second wrappers 15a, 15b (or a single second wrapper, if applicable) as described herein can comprise a porous sheet material. Porous material in this context means a material having an air permeability greater than 200 Coresta units. The porous sheet material of the second wrapper(s) can have an air permeability greater than 500, 1000, 1500, or 2000 Coresta units (CU). The porous sheet material of the second wrapper(s) can have an air permeability of 2000 to 8000 CU. Preferably, the porous sheet material of the second wrapper(s) has a porosity greater than 2500 CU. Paper can be used as such a sheet material. Alternatively, one or both of the second wrappers 15a, 15b (or a single second wrapper, if applicable) as described herein may comprise a non-porous sheet material having an air permeability of less than 200 CU. In this case, a barrier coating or similar modification to the material may be used to provide the correct level of air permeability while retaining, for example, the desired density and / or thermal conductivity values.

[0052] The first wrapper 60 as described herein can include a non-porous sheet material. Non-porous material in this context means a material having an air permeability of less than 200 CU. The non-porous sheet material of the first wrapper can have an air permeability of less than 150, 125, or 100 CU. The sheet material of the first wrapper can have an air permeability of, for example, 75 CU.

[0053] Tables 1 and 2 below set out various examples of wrapper configurations that can be used in the consumable components described herein, as well as the associated densities (Table 1) and thermal conductivities (Table 2) of the wrappers. [Table 1] [Table 2]

[0054] Mouthpiece 10 further includes a cylindrical body of filter material 12, in this example, cellulose acetate tow. The body of filter material 12 may be approximately 8 mm to 14 mm in length. In this example, the body of filter material 12 is 10 mm in length. The tow has a denier per filament (dpf) of 9.5 and a total fineness of 12,000. Second wrappers 15a, 15b partially surround the body of filter material 12.

[0055] Mouthpiece 10 further comprises a first tube segment 16 and a second tube segment 17. First tube segment 16 is disposed upstream of the body of filter material 12, while second tube segment 17 is disposed downstream of the body of filter material 12. Second tube segment 17 forms a recess at the mouth end of mouthpiece 10. Outer second flaps 15b connect inner second flaps 15a to first tube segment 16 and second tube segment 17. In this example, first tube segment 16 is 25 mm long, and second tube segment 17 is 6 mm long. In other examples, one or both of the tube segments may be omitted.

[0056] In this example, the first and second tubing segments 16, 17 are formed from one or more layers of stiff paper. In another example, one or both of the tubing segments can be formed from a filter material, such as cellulose acetate.

[0057] In this example, ventilation holes (not shown) are formed in the tip material 70, the outer second wrapper 15b, and the first tubing segment 16. This construction provides ventilation into the mouthpiece 10 at a location upstream of the body of filter material 12. The ventilation holes can be formed in these components by laser drilling or mechanical drilling.

[0058] The ventilation holes can be located between about 17 mm and about 25 mm from the mouth end of the consumable 100. In this example, the ventilation holes are located about 18 mm from the mouth end of the consumable 100. In other examples, ventilation holes can be formed in the tipping material 70, the outer second wrapper 15b, and the second tubing segment 17 to provide ventilation into the mouthpiece at a location downstream of the body of the filter material 12.

[0059] Figure 2 is a cross-sectional side view of a further tobacco industry product. The further tobacco industry product is a modified consumable component 100' that is substantially the same as the consumable component 100 described above with respect to Figure 1. Differences are explained below.

[0060] The modified consumable component 100' includes a mouthpiece 10'. The mouthpiece 10' includes a flavor-modifying additive disposed within the body of filter material 12. In this example, the flavor-modifying additive is contained within a rupturable capsule 20. In other examples, the flavor-modifying additive can be provided as a flavor-carrying thread, or other aerosol modifier can be disposed within the body of filter material 12.

[0061] In this example, a single capsule 20 is used. The capsule 20 is completely embedded within the filter material 12. In other words, the capsule 20 is completely surrounded by the filter material 12. In other examples, multiple breakable capsules, for example, two, three, or more breakable capsules, can be disposed within the filter material 12. In examples where multiple capsules are used, the individual capsules may be identical to one another or may differ from one another in terms of size and / or capsule payload.

[0062] The capsule 20 has a core-shell structure. In other words, the capsule 20 includes a shell that encapsulates a liquid flavoring, which can be any one of the flavorings described herein. The capsule shell can be ruptured by a user to release the flavoring into the filter material 12. Forming at least one of the second wrappers 15a, 15b from a non-porous material can serve to prevent the liquid flavoring from leaking through the wrapper when the capsule 20 is broken. For example, the inner second wrapper 15a can include a barrier coating to render the material substantially impermeable to the liquid flavoring. Alternatively or additionally, the outer second wrapper 15b can include a barrier coating to render the material substantially impermeable to the liquid flavoring.

[0063] During use, a user can remove consumable components from the heating device midway through use in order to break the capsule 20. As explained above, the use of second wrappers 15a, 15b, which provide reduced heat transfer, reduces the user's exposure to heat when gripping the wrappers to remove consumable components and break the capsule 20.

[0064] Providing a second wrapper surrounding the mouthpiece with a density in the range described herein also provides a softer surface against which the user must press to break the capsule.

[0065] In this example, capsule 20 is spherical and has a diameter of about 3 mm. In other examples, capsules of other shapes and sizes can be used. The total weight of the capsule can range from about 10 mg to about 50 mg.

[0066] In this example, capsule 20 is positioned at a longitudinally central location within the body of filter material 12. That is, capsule 20 is positioned so that its center is 5 mm from each end of the body of filter material 12. In other examples, capsule 20 can be positioned at a location other than a longitudinally central location within the body of filter material, i.e., closer to the downstream end of the body of filter material than the upstream end, or closer to the upstream end of the body of filter material than the downstream end. Mouthpiece 10' is preferably configured so that capsule 20 and ventilation holes are longitudinally offset from one another within mouthpiece 10'.

[0067] A cross section of mouthpiece 10' is shown in Figure 3. This figure shows capsule 20, the body of filter material 12, and wrappers 15a, 15b. In this example, capsule 20 is centered on the longitudinal axis (not shown) of mouthpiece 10'. Wrappers 15a, 15b are concentrically disposed around the cylindrical body of filter material 12.

[0068] In the examples described above, the body of filter material is disposed toward the mouth end of the consumable. Alternatively or additionally, the body of filter material may be disposed at the opposite (distal) end of the consumable.

[0069] In the examples described above, the mouthpiece includes a single body of filter material. In other examples, the mouthpiece may include multiple bodies of filter material. The mouthpiece may include cavities between the bodies of filter material.

[0070] Also provided herein is a method of manufacturing an aerosol-generating component for a tobacco heating device. The method is shown in Figure 4 and includes, in any order, wrapping an aerosol-generating material in a first sheet wrapper such that the first sheet wrapper surrounds at least a portion of the aerosol-generating material (S101), disposing a mouthpiece downstream of the aerosol-generating material (S102), and wrapping the mouthpiece in a second sheet wrapper such that the second sheet wrapper surrounds at least a portion of the mouthpiece, wherein the first sheet wrapper has a thermal conductivity greater than the thermal conductivity per unit thickness of the second sheet wrapper (S103). S102 and S103 can alternatively be performed in reverse order, such that the mouthpiece is wrapped in the second sheet wrapper before being disposed downstream of the aerosol-generating material.

[0071] Also presented herein is a method of manufacturing a mouthpiece. The method is shown in FIG. 5 and includes providing a body of filter material (S201) and filtering the material to a concentration of 0.2 g / cm. 3 ~0.45g / cm 3 and wrapping (S202) a sheet material having a density in the range of about 1 / 2 to 1 / 2 of the filter material around the body of filter material.

[0072] For the purpose of addressing various problems and advancing the art, this entire disclosure illustrates various embodiments by way of example, in which the claimed invention(s) can be practiced to provide superior aerosol-generating components. The advantages and features of the present disclosure are merely those of a representative sample of embodiments and are not exhaustive and / or exclusive. They are presented to aid in understanding and teach the claimed features. It is to be understood that the advantages, embodiments, examples, functions, features, structures, and / or other aspects of the present disclosure should not be considered limitations on the disclosure as defined by the claims or on equivalents thereof, and that other embodiments may be utilized and changes may be made without departing from the scope and / or spirit of the present disclosure. Various embodiments may suitably comprise, consist of, or essentially consist of various combinations of the disclosed elements, components, features, parts, steps, means, etc. Additionally, the present disclosure encompasses other inventions not currently claimed but which may be claimed in the future.

Claims

[Claim 1] 1. An aerosol-generating component for a tobacco heating device, said aerosol-generating component comprising: an aerosol-generating material; and a mouthpiece downstream of the aerosol-forming material; a first wrapper including a first sheet material and surrounding at least a portion of the aerosol-forming material; a second wrapper including a second sheet material and surrounding at least a portion of the mouthpiece; The aerosol-generating component, wherein the thermal conductivity of the first sheet material is greater than the thermal conductivity of the second sheet material.

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