Heating cigarette with heat conduction film

Abstract

The invention provides a heating cigarette with a heat conduction film. The heating cigarette comprises a combustion section, a cigarette core section and a filter tip section which are coaxially connected in sequence; the combustion section, the cigarette core section and the filter tip section are wrapped and formed by cigarette paper; the combustion section and the cigarette core section are both provided with coaxial hollow channels; and a high-thermal-conductivity film is attached to the inner surface of the hollow channel. When the heating cigarette works, high temperature generated by combustion of the combustion section is efficiently transmitted to the cigarette core section through two paths: firstly, rapid and directional radial and axial solid conduction is carried out through the high-thermal-conductivity film; and secondly, airflow transmission is carried out through a hollow channel. The two paths have a synergistic effect, so that the cigarette core section material is quickly, uniformly and fully heated, and sufficient and stable aerosol is efficiently released.

Description

Technical Field

[0001] This invention belongs to the field of cigarette technology, and specifically relates to a heated cigarette with a heat-conducting film. Background Technology

[0002] In recent years, heated tobacco products (HNB) have received widespread attention due to their potential to reduce the release of harmful components. Current mainstream products primarily rely on precision electronic devices (such as Ploom and IQOS) as an external heat source to precisely control the temperature of the tobacco. While these products effectively reduce combustion, their user experience is highly dependent on dedicated, rechargeable devices, leading to issues such as inconvenience in portability, battery anxiety, high maintenance costs, and a high barrier to entry for widespread adoption.

[0003] To overcome the reliance on specialized smoking devices, researchers hope to develop a self-heating cigarette (combustion-type heated cigarette) that provides heat through a combustible section (combustion section) of the product itself, directly heating the adjacent core section, which then releases the desired active ingredients.

[0004] CN207733658U discloses a three-section twisted carbon-heated cigarette. The heated cigarette sequentially includes a heat source section, an atomizing tobacco section, a cooling tobacco section, and a filter section. The cooling tobacco section is formed by rolling cigarette paper and then joining it to the filter section with tipping paper to form a cooling cigarette segment. The key feature is that the heat source section is formed by rolling sheet-like, strip-like, or filamentous carbon heat sources through cigarette paper; the atomizing tobacco section is formed by rolling a double-layer aluminum foil cigarette paper, consisting of an outer layer of cigarette paper and an inner layer of aluminum foil; the heat source section, atomizing tobacco section, and cooling cigarette segment are connected by a composite aluminum foil, which completely covers the atomizing tobacco section, with portions of the heat source section and cooling tobacco section covered at both ends; the composite aluminum foil is composed of upper and lower layers of cigarette paper and a middle layer of aluminum foil. This invention has a simple structure, reduces production costs, and provides better combustibility and a better atomization effect of the tobacco.

[0005] CN113907446A discloses a charcoal-heated cigarette, comprising a charcoal rod segment, a tobacco segment, a smoke extraction segment, and a filter segment arranged sequentially from upstream to downstream. The charcoal-heated cigarette may further include composite paper and an external wrapping element wrapped around the composite paper, tobacco segment, smoke extraction segment, and filter segment. The composite paper wraps a portion of the charcoal rod segment and a portion or all of the tobacco segment. The smoke extraction segment has a cavity extending in the axial direction, and its sidewalls have at least one sidewall through-hole communicating with the cavity. The external wrapping element has a wrapping element through-hole at a position corresponding to the sidewall through-hole, allowing external air to enter the smoke extraction segment. The charcoal-heated cigarette of the present invention allows air to bypass the tobacco segment during inhalation, thereby maintaining the tobacco material within a certain temperature range and ensuring the composition and concentration of the mainstream smoke.

[0006] However, the aforementioned self-heating products in the prior art face a technical obstacle: without the introduction of a heat-conducting design, the heat mainly relies on the axial solid material of the smoke core for conduction. These materials themselves are poor conductors of heat, and most of the heat cannot be effectively transferred to the smoke core section, but is lost into the environment or remains inside the combustion section. This directly leads to core defects such as low heat transfer efficiency from the combustion section to the smoke core section, uneven carbonization of the smoke core material, and low utilization rate. Summary of the Invention

[0007] To address the shortcomings of existing technologies, this invention provides a heated cigarette with a heat-conducting film. This heated cigarette solves the bottleneck problem of the inability to effectively utilize heat from the combustion stage in the cigarette core, thereby achieving a high-performance, commercially viable, and "on-demand" heated cigarette.

[0008] To achieve this objective, the present invention adopts the following technical solution: In a first aspect, the present invention provides a heated cigarette with a heat-conducting film, the heated cigarette comprising a combustion section, a core section and a filter section connected coaxially in sequence; The combustion section, the core section, and the filter section are formed by wrapping cigarette paper. Both the combustion section and the smoke core section are equipped with coaxial hollow channels; The inner surface of the hollow channel is covered with a highly thermally conductive thin film.

[0009] During operation, the heated cigarette of this invention generates high temperatures in the combustion section, which are efficiently transferred to the core section through two pathways: first, rapid and directional radial and axial solid conduction through the high thermal conductivity film; and second, airflow transmission through the hollow channel. The synergistic effect of these two pathways ensures that the core material is heated rapidly, uniformly, and thoroughly, thereby efficiently releasing a sufficient and stable amount of aerosol.

[0010] Preferably, a heat-conducting connector is provided between the combustion section and the smoke core section.

[0011] Preferably, the thermally conductive connector is a ceramic ring.

[0012] Preferably, a highly thermally conductive thin film is attached to the inner surface of the ceramic ring.

[0013] Preferably, the high thermal conductivity film includes any one or a combination of at least two of the following: graphene film, pyrolytic graphite film, carbon nanotube film, or metal foil.

[0014] Preferably, the high thermal conductivity film is a strip-shaped graphene film.

[0015] Preferably, the high thermal conductivity film is spirally attached to the inner surface of the hollow channel.

[0016] Preferably, the thickness of the graphene film is 30-120 μm (e.g., it can be 30 μm, 40 μm, 50 μm, 60 μm, 70 μm, 80 μm, 90 μm, 100 μm or 110 μm, etc.), and the thermal conductivity is ≥500 W / (m•K), for example, the thermal conductivity can be 600 W / (m•K), 700 W / (m•K), 800 W / (m•K), 900 W / (m•K) or 1000 W / (m•K, etc.).

[0017] Preferably, the high thermal conductivity film is a composite film, which is composed of a carbon nanotube film layer and a metal foil layer stacked together, and when it is attached to the inner surface of the hollow channel, the metal foil layer is located between the carbon nanotube film layer and the inner surface of the hollow channel.

[0018] Because carbon nanotube films are typically brittle and far less flexible and self-adhesive than metal foils, directly bonding them to complex inner walls (such as star-shaped or helical surfaces) is extremely difficult in terms of manufacturing processes, and it is challenging to ensure a tight thermally conductive contact. Furthermore, the ultra-high thermal conductivity of carbon nanotube films is primarily in the in-plane direction (axial direction). While directly bonding them to the inner wall facilitates axial heat transfer, it is not conducive to efficiently conducting heat radially to the contacting cigarette core material. Although metal foil may have slightly lower in-plane thermal conductivity, its radial heat diffusion is likely superior. Therefore, a metal foil-carbon nanotube layer combination can enable more efficient heat conduction.

[0019] Preferably, the carbon nanotube film layer and the metal foil layer are composited by a thermally conductive adhesive or by hot pressing.

[0020] In this invention, the high thermal conductivity film is disposed on the inner surface of the hollow channel in different structures, discontinuously covered (e.g., in parallel strips) or non-closed wound (e.g., in spirally spaced wrapping). This design allows the high thermal conductivity film to exert its high thermal conductivity while naturally forming channels between the film strips or spiral coils that allow airflow to pass along the axial direction, thus taking into account the airflow permeability and making the heat transfer in the combustion section more complete and efficient.

[0021] Preferably, the thickness of the composite film is 20-100 μm (e.g., it can be 20 μm, 30 μm, 40 μm, 50 μm, 60 μm, 70 μm, 80 μm or 90 μm, etc.), and the thermal conductivity is ≥350 W / (m•K), for example, the thermal conductivity can be 350 W / (m•K), 400 W / (m•K), 500 W / (m•K), 600 W / (m•K), 700 W / (m•K), 800 W / (m•K), 900 W / (m•K) or 1000 W / (m•K, etc.).

[0022] Preferably, the cross-sectional area of ​​the hollow channel is 20-35% of the cross-sectional area of ​​the heated cigarette, for example, it can be 21%, 23%, 25%, 28%, 30%, 32% or 34%, etc.

[0023] Preferably, the cross-section of the hollow channel is any one of circular, star-shaped, cross-shaped, or multi-lobed.

[0024] Preferably, the combustion section is made of carbon powder and plant fiber.

[0025] Preferably, the mass ratio of the toner to the plant fiber is 1:(3-5), for example, it can be 1:3, 1:3.2, 1:3.5, 1:3.8, 1:4, 1:4.2, 1:4.5 or 1:4.8, etc.

[0026] Preferably, the porosity of the combustion section is ≥50%, for example, it can be 55%, 60%, 65%, 70% or 75%, etc.

[0027] In addition to the hollow channel, the combustion section of the present invention is also provided with a high porosity in its matrix material to ensure that the combustion section can be ignited and maintain stable and complete combustion, while providing a passage for the hot gas flow generated by combustion to the core section.

[0028] Preferably, the components of the core segment include tobacco raw materials, smoking agents, tobacco flavorings, and adhesives.

[0029] Preferably, the components of the tobacco core segment include, by weight, 15-25 parts of tobacco raw material (e.g., 16, 18, 20, 22, or 24 parts), 2-6 parts of smoke-generating agent (e.g., 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, or 6 parts), 0.01-0.25 parts of tobacco flavoring (e.g., 0.01, 0.05, 0.1, 0.15, 0.2, or 0.25 parts), and 0.1-0.5 parts of adhesive (e.g., 0.1, 0.2, 0.3, 0.4, or 0.5 parts).

[0030] Preferably, the tobacco raw material includes any one or a combination of at least two of tobacco sheets, tobacco pellets, or shredded tobacco.

[0031] Preferably, the tobacco flavoring includes any one or a combination of at least two of vanillin, succinate, 2-acetylpyrazine, 2,3,5-trimethylpyrazine, isoamyl isovalerate, menthyl acetate, phenethyl alcohol, furanone, or geraniol.

[0032] Preferably, the adhesive comprises any one or a combination of at least two of sodium alginate, sodium carboxymethyl cellulose, methyl cellulose, hydroxypropyl methyl cellulose, chitosan, guar gum, or cellulose acetate.

[0033] Preferably, the smoke-generating agent comprises any one or a combination of at least two of propylene glycol, glycerin, or sorbitol.

[0034] Preferably, the filter tip is made of cellulose acetate or polylactic acid.

[0035] All the specific point values ​​within the above range can be selected, and will not be elaborated on here.

[0036] Compared with the prior art, the present invention has the following beneficial effects: (1) The present invention achieves a breakthrough improvement in thermal efficiency by building a high-efficiency heat conduction channel (a combination of hollow channel and high thermal conductivity film): the built-in high thermal conductivity film constructs a "heat conduction bridge" from the heat source to the reaction zone, realizing the directional and efficient transport of combustion heat, solving the core problem of heat "not being able to be transferred, not being able to be transferred quickly, and not being able to be retained", and the heat utilization rate is expected to be increased several times.

[0037] (2) The technical solution of the present invention not only considers the enhancement of heat conduction (through the heat-conducting film), but also ensures the requirements of heat convection and combustion reaction itself (through the pore structure of the combustion section, the airflow channel, the structure of the high thermal conductivity film and the bonding method).

[0038] (3) By setting a high thermal conductivity film in both the combustion section and the core section, and supplementing it with a specific thermally conductive connector, the present invention can ensure the rapid establishment and high uniformity of the internal temperature field of the core section, completely avoid local overheating or insufficient heating, and significantly improve the consistency between the number of suction ports. Detailed Implementation

[0039] The technical solution of the present invention will be further illustrated below through specific embodiments. Those skilled in the art should understand that the embodiments described are merely illustrative of the present invention and should not be construed as limiting the invention in any way.

[0040] Example 1 This embodiment provides a heated cigarette with a heat-conducting film. The heated cigarette (7.9 mm in diameter) includes a combustion section (16 mm in length), a heat-conducting connector, a core section (20 mm in length), and a filter section (30 mm in length) connected coaxially in sequence. The combustion section, heat-conducting connector, core section, and filter section are formed by wrapping cigarette paper. The combustion section, heat-conducting connector, and smoke core section are all provided with coaxial hollow channels; The material of the thermally conductive connector is thermally conductive ceramic; The cross-sectional area of ​​the hollow channel is 25% of the cross-sectional area of ​​the heated cigarette; The cross-section of the hollow channel is star-shaped; A highly thermally conductive thin film is attached to the inner surface of the hollow channel; The high thermal conductivity film is composed of a carbon nanotube film layer and a metal foil layer stacked together. The metal foil is located between the carbon nanotube film and the inner surface of the hollow channel; The thickness of the high thermal conductivity film is 50 μm, and the thermal conductivity is 400 W / (m•K); The combustion section is made of plant fiber and carbon powder in a mass ratio of 4:1. The porosity of the combustion section is 55%; The components of the tobacco core segment, by weight, are 22 parts tobacco raw material, 5 parts smoking agent, 0.15 parts tobacco flavoring and 0.3 parts adhesive; The tobacco raw material is tobacco pellets; The smoke-generating agent is a combination of propylene glycol and glycerin in a mass ratio of 1:1; The tobacco flavoring is a combination of vanillin and menthyl acetate in a mass ratio of 2:3; The adhesive is sodium alginate by mass ratio; The filter tip section is made of cellulose acetate.

[0041] Example 2 This embodiment provides a heated cigarette with a heat-conducting film. The heated cigarette (7.9 mm in diameter) includes a combustion section (16 mm in length), a heat-conducting connector, a core section (20 mm in length), and a filter section (30 mm in length) connected coaxially in sequence. The combustion section, heat-conducting connector, core section, and filter section are formed by wrapping cigarette paper. The combustion section, heat-conducting connector, and smoke core section are all provided with coaxial hollow channels; The material of the thermally conductive connector is thermally conductive ceramic; The cross-sectional area of ​​the hollow channel is 30% of the cross-sectional area of ​​the heated cigarette. The hollow channel has a circular cross-section; A highly thermally conductive thin film is attached to the inner surface of the hollow channel; The high thermal conductivity film is a strip-shaped graphene film; The thickness of the high thermal conductivity film is 50 μm, and the thermal conductivity is 500 W / (m•K); The high thermal conductivity film is spirally attached to the inner surface of the hollow channel; The combustion section is made of plant fiber and carbon powder in a mass ratio of 3:1. The porosity of the combustion section is 60%; The components of the tobacco core segment, by weight, are 20 parts tobacco raw material, 6 parts smoking agent, 0.25 parts tobacco flavoring and 0.4 parts adhesive; The tobacco raw material is shredded tobacco; The smoke-generating agent is a combination of propylene glycol and glycerin in a mass ratio of 1:3; The tobacco flavoring is a combination of 2-acetylpyrazine, 2,3,5-trimethylpyrazine, and isoamyl isovalerate in a mass ratio of 2:2:3. The adhesive is sodium carboxymethyl cellulose by mass ratio; The filter tip section is made of cellulose acetate.

[0042] Example 3 This embodiment provides a heated cigarette with a heat-conducting film. The only difference between the heated cigarette and Embodiment 1 is that it does not have a heat-conducting connector. The rest of the structure and the components used are the same as those in Embodiment 1.

[0043] Example 4 This embodiment provides a heated cigarette with a heat-conducting film. The only difference between the heated cigarette and Embodiment 1 is that the porosity of the combustion section is 40%, while the rest of the structure and components used are the same as those in Embodiment 1.

[0044] Example 5 This embodiment provides a heated cigarette with a heat-conducting film. The only difference between the heated cigarette and Embodiment 1 is that the cross-sectional area of ​​the hollow channel is 15% of the cross-sectional area of ​​the heated cigarette. The rest of the structure and the components used are the same as those in Embodiment 1.

[0045] Example 6 This embodiment provides a heated cigarette with a heat-conducting film. The only difference between the heated cigarette and Embodiment 1 is that the cross-sectional area of ​​the hollow channel is 40% of the cross-sectional area of ​​the heated cigarette. The rest of the structure and the components used are the same as those in Embodiment 1.

[0046] Example 7 This embodiment provides a heated cigarette with a thermally conductive film. The only difference between the heated cigarette and Embodiment 1 is that the high thermal conductivity film is only a metal foil, while the rest of the structure and components used are the same as in Embodiment 1.

[0047] Example 8 This embodiment provides a heated cigarette with a thermally conductive film. The only difference between this heated cigarette and that of Embodiment 1 is that the high thermal conductivity film is a carbon nanotube film; the rest of the structure and components are the same as in Embodiment 1. Because the carbon nanotube film in this embodiment is too brittle and flexible, and the process cost of attaching it to the inner wall of the hollow channel would be too high, no further testing was conducted.

[0048] Example 9 This embodiment provides a heated cigarette with a thermally conductive film. The only difference between the heated cigarette and the one in Embodiment 2 is that the long strip graphene film is laid side by side (without gaps between the two films) and attached to the inner surface of the hollow channel. The rest of the structure and the components used are the same as those in Embodiment 2.

[0049] Comparative Example 1 This comparative example provides a heated cigarette, which differs from Example 1 only in that it does not have a highly thermally conductive film attached inside the hollow channel; the rest of the structure and components used are the same as in Example 1.

[0050] Comparative Example 2 This comparative example provides a conventional combustion heated cigarette, which includes a combustion section, a core section, and a filter section connected coaxially in sequence. The combustion section, the core section, and the filter section are formed by wrapping cigarette paper. The composition and materials of the combustion section, core section and filter section of the heated cigarette are the same as in Example 3.

[0051] Test Example 1 Thermocouple temperature sensors were inserted at two different radial positions on the cigarette core segment (the first position was 3 mm from the end of the cigarette core near the combustion section, and the second position was 8 mm from the end of the cigarette core near the combustion section). The insertion points were the same for the heated cigarettes in Examples 1-9 and Comparative Examples 1-2, with an insertion depth of 2 mm. The cigarettes were then smoked on a smoking machine at a frequency of 30 s / puff and a volume of 55 mL / puff. After 300 s of smoking, the internal temperature of the cigarette core segment at different positions was recorded on the 8th puff, and the average temperature and temperature difference between the two points were calculated. After smoking, the cigarette core segment was disassembled, and the carbonization effect of the cigarette core segment was compared and analyzed.

[0052] Carbonization effect analysis method: The hot airflow through the tobacco section flows from the end furthest from the filter tip towards the end closest to the filter tip. The carbonization of the core material in the tobacco section begins at the end furthest from the filter tip and gradually progresses longitudinally towards the end closest to the filter tip. Since the carbonization of the core material is affected by the heat conduction and heat transfer of the regulating section, the carbonization of the core material cross-section is relatively uniform. Therefore, the heating effect of the core material can be compared by analyzing the longitudinal carbonization length. In this invention, the total length of the tobacco core section is taken as 100 mm, and the percentage of the carbonized length to the total length represents the carbonization effect of the core material. The results are shown in Table 2.

[0053] Table 1 As shown in Table 1, compared with the conventional combustion heated cigarettes of Comparative Example 2, the heated cigarettes of Examples 1-3 have hollow channels in the core section and combustion section, combined with a high thermal conductivity film, constructing a "thermal bridge" from the heat source to the reaction zone. This achieves directional and efficient transport of combustion heat, resulting in significantly better carbonization of the core. Compared with Example 3, Example 1 has a more uniform internal temperature in the core section due to the addition of thermally conductive connectors.

[0054] As can be seen from the comparison between Example 1 and Example 4, the porosity of the combustion section also affects heat conduction. If the porosity of the combustion section is small, the combustion is incomplete, the heat supplied to the core section is reduced, and the carbonization efficiency of the core material is reduced.

[0055] As can be seen from Examples 1 and 5-6, if the cross-sectional area of ​​the hollow channel is too small, it will affect the airflow to the body, and thus affect the heat conduction; if it is too large, the heat flow will be smooth, but because the amount of tobacco in the core section is too small, the overall combustion material will be reduced, and the heat provided to the core section will be reduced, which will ultimately affect the carbonization effect of the core.

[0056] A comparison between Example 1 and Example 7 shows that when only metal foil is used as a high thermal conductivity film, its heat conduction effect is poor.

[0057] As can be seen from the comparison between Example 2 and Example 9, the spiral bonding method between the long strip films can form a channel that allows airflow to pass through along the axial direction, thereby making the heat transfer of the combustion section more complete and efficient.

[0058] As can be seen from the comparison between Comparative Example 1 and Example 1, the use of a high thermal conductivity film can greatly improve the efficiency of heat utilization, thereby making the carbonization of the cigarette core more complete.

[0059] The applicant declares that the present invention is illustrated by the above embodiments to provide a heated cigarette with a heat-conducting film, but the present invention is not limited to the above embodiments, that is, it does not mean that the present invention must rely on the above embodiments to be implemented. Those skilled in the art should understand that any improvements to the present invention, equivalent substitutions of the raw materials of the product of the present invention, addition of auxiliary components, selection of specific methods, etc., all fall within the protection scope and disclosure scope of the present invention.

[0060] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0061] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not describe the various possible combinations separately.

Claims

1. A heated cigarette with a heat-conducting film, characterized in that, The heated cigarette includes a combustion section, a core section, and a filter section that are coaxially connected in sequence. The combustion section, the core section, and the filter section are formed by wrapping cigarette paper. Both the combustion section and the smoke core section are equipped with coaxial hollow channels; The inner surface of the hollow channel is covered with a highly thermally conductive thin film.

2. The heated cigarette as described in claim 1, characterized in that, A heat-conducting connector is provided between the combustion section and the smoke core section; Preferably, the thermally conductive connector is made of thermally conductive ceramic. Preferably, the thermally conductive ceramic has a hollow channel; Preferably, a highly thermally conductive thin film is attached to the inner surface of the thermally conductive ceramic hollow channel.

3. The heated cigarette as described in claim 1 or 2, characterized in that, The high thermal conductivity film includes any one or a combination of at least two of the following: graphene film, pyrolytic graphite film, carbon nanotube film, or metal foil.

4. The heated cigarette as described in claim 3, characterized in that, The high thermal conductivity film is a strip-shaped graphene film; Preferably, the graphene film is spirally attached to the inner surface of the hollow channel.

5. The heated cigarette as described in claim 4, characterized in that, The graphene film has a thickness of 30-120 μm and a thermal conductivity of ≥500 W / (m•K).

6. The heated cigarette as described in claim 3, characterized in that, The high thermal conductivity film is a composite film, which is composed of carbon nanotube film layer and metal foil layer stacked together. When it is attached to the inner surface of the hollow channel, the metal foil layer is located between the carbon nanotube film layer and the inner surface of the hollow channel. Preferably, the thickness of the composite film is 20-100 μm, and the overall axial thermal conductivity is ≥350 W / (m•K).

7. The heated cigarette as described in any one of claims 1-6, characterized in that, The cross-sectional area of ​​the hollow channel is 20-35% of the cross-sectional area of ​​the heated cigarette; Preferably, the cross-section of the hollow channel is any one of circular, star-shaped, cross-shaped, or multi-lobed.

8. The heated cigarette as described in any one of claims 1-7, characterized in that, The combustion section is made of plant fiber and carbon powder; Preferably, the porosity of the combustion section is ≥50%.

9. The heated cigarette as described in any one of claims 1-8, characterized in that, The components of the core segment include tobacco raw materials, smoking agents, tobacco flavorings, and adhesives; Preferably, the tobacco raw material includes any one or a combination of at least two of tobacco sheets, tobacco pellets, or shredded tobacco; Preferably, the tobacco flavoring includes any one or a combination of at least two of vanillin, succinate, 2-acetylpyrazine, 2,3,5-trimethylpyrazine, isoamyl isovalerate, menthyl acetate, phenethyl alcohol, furanone, or geraniol. Preferably, the adhesive comprises any one or a combination of at least two of sodium alginate, sodium carboxymethyl cellulose, methyl cellulose, hydroxypropyl methyl cellulose, chitosan, guar gum, or cellulose acetate; Preferably, the smoke-generating agent comprises any one or a combination of at least two of propylene glycol, glycerin, or sorbitol.

10. The heated cigarette as described in any one of claims 1-9, characterized in that, The filter tip is made of cellulose acetate or polylactic acid.

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