Crumb Tobacco Base

Abstract

The present invention relates to an aerosol-releasing substrate for use in a heated device, which is breathable and comprises an inhalable agent containing tobacco particles and / or at least one of a stimulant and / or a flavor. The substrate further comprises a gelling agent for gelling the aerosol-releasing substrate, a disintegrant and / or a thickening stabilizer, and 30 to 70% of a humectant. The aerosol-releasing substrate further has a soft, granular texture. The present invention also relates to a method for making a breathable, soft, granular aerosol-releasing substrate for use in a heated device, comprising: a) forming a mixture by mixing an inhalable agent containing tobacco particles and / or at least one of a stimulant and / or a flavor, a gelling agent for gelling the aerosol-releasing substrate, a disintegrant and / or a thickening stabilizer, and 30 to 70% of a humectant; and b) forming a soft granular structure from the mixture.

Description

[Technical field]

[0001] The present invention relates to a particulate aerosol-releasing substrate comprising tobacco particles, a gelling agent, a disintegration stabilizer, and herein 10-80% of a humectant. Additionally, the present invention relates to a method for producing the particulate aerosol-releasing substrate. [Background technology]

[0002] Electronic cigarettes (e-cigarettes) are popular and widespread. They have created a need and potential for novel tobacco products that are vaporized and inhaled by the smoker. These e-cigarettes or similar devices, such as e-pipes, typically generate aerosols by heating a liquid containing flavors, e.g., water and optionally an aerosol-forming agent, such as nicotine. However, this can result in an uneven smoking profile, where the flavor of the puffs experienced can vary significantly, e.g., due to insufficient extraction of key compounds in the liquid. This has led consumers to seek alternatives to heated but not burned tobacco products.

[0003] Meanwhile, heat-not-burn devices, which can be used to heat tobacco instead of burning it, have become increasingly popular. These heat-not-burn devices provide tobacco-based vapor and can be filled with several tobacco products that will be heated to approximately 350°C by activating an electric heater. Tobacco products suitable for use in heat-not-burn devices require a large surface area and at least a certain amount of aerosol-forming agent. Such tobacco products are, for example, foamed tobacco, tobacco sticks, or simply reconstituted tobacco. Tobacco sticks include crushed tobacco leaves compressed into a stick, containing a small amount of humectant, and surrounded by a plastic capsule. Due to the closed air bubbles in foamed tobacco, tobacco sticks have a smaller surface area and therefore less airflow through the substrate.

[0004] Due to their fragility and shape, both foamed tobacco and tobacco sticks are difficult to handle and therefore difficult to load into the pods of heated devices. Furthermore, due to the low aeration of foamed tobacco and the fixed amount of humectants in the tobacco sticks and reconstituted tobacco, the vape yield of these tobacco products is also low. Summary of the Invention

[0005] It is therefore an object of the present invention to provide an aerosol-emitting tobacco substrate that is easy to administer, easy to handle, particularly easy to load into the pods of heated devices, and further has the ability to produce more vape than conventional tobacco products.

[0006] The above-mentioned problems are solved by an aerosol-releasing substrate for use in a heated device, comprising an inhalable agent that is breathable and contains at least one of tobacco particles and / or stimulants and / or flavors, a gelling agent for gelling the aerosol-releasing substrate, a disintegration inhibitor and / or a thickening stabilizer, and 30-70% of a moisturizing agent. The aerosol-releasing substrate further has a soft granular texture.

[0007] Since the humectant generates aerosol when it is heated, the aerosol-releasing substrate can release a large amount of aerosol when it has a soft structure and contains a humectant that is spread in an amount of 30% of the composition of the substrate. Therefore, the substrate can generate a much larger amount of aerosol / vape than a conventional tobacco product. What is beneficial for a large amount of humectant is the granular texture, since the particles generally have a large outer surface that additionally provides aerosol / vape release. Furthermore, due to the granular texture, the substrate can be easily administered and filled into the pod of a heated device or other container, for example, for transporting and dispensing the substrate.

[0008] Furthermore, it is contemplated that the aerosol-releasing substrate has a particle size of more than 0.3 mm, preferably more than 0.5 mm and preferably more than 1.0 mm and / or a particle size of less than 10 mm, preferably less than 5 mm and preferably less than 3 mm. The particle size of the aerosol-releasing substrate is most preferably 0.3 mm to 4 mm and particularly preferably more than 0.4 mm. These particle sizes are optimal for administering the substrate. Moreover, such sizes allow a sufficient number of substrate particles to be loaded into the pod of the heated device. Small particles with said sizes are particularly useful for emitting aerosols. Such small particles have a larger outer surface than larger particles and therefore can emit much more aerosol than larger particles. On the other hand, very small particles less than 0.1 mm may not contain enough tobacco particles and / or particles of inhalable agent to release enough flavor to concentrate the aerosol. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] According to a preferred embodiment, the weight of tobacco and / or inhalable agent is more than 5% by weight of the aerosol-emitting substrate, preferably more than 10% by weight and preferably more than 20% by weight, and / or the weight of tobacco and / or inhalable agent is less than 70% by weight of the aerosol-emitting substrate, preferably less than 60% by weight, preferably less than 40% by weight. Most preferred is an amount of tobacco between 30% and 40% by weight of the substrate.

[0010] This ensures that there is a sufficient amount of tobacco flavor and stimulants within the substrate. If the amount of tobacco is increased, for example to more than 50% by weight of the substrate, the amount of other components, such as humectants or stabilizers, must be reduced, and the substrate may become too brittle and unstable, or may emit too little vape.

[0011] In a preferred embodiment, the tobacco and / or inhalable agent contains at least one type of tobacco, extract of tobacco and / or at least one non-tobacco flavouring, whereby the tobacco type has a particle size (Dv90) of more than 100 μm, preferably more than 200 μm, preferably more than 400 μm, preferably more than 500 μm and / or a particle size of less than 1000 μm, preferably less than 900 μm, preferably less than 800 μm, preferably less than 700 μm, preferably less than 600 μm.

[0012] Preference is given to a log-normal particle distribution of tobacco and / or inhalable agent particles within the substrate. It is further possible for the tobacco particles to have different particle sizes or for the particles to contain at least two or more fractions, for example a first fraction with a particle size between 50 μm and 100 μm mixed with a second fraction with a particle size between 400 μm and 600 μm, or a first fraction with particles with a size less than 50 μm and a second fraction with particles with a size greater than 50 μm.

[0013] Preferred may be a mixture of a first fraction with a particle size of more than 600 μm and a second fraction with a particle size of less than 400 μm. With tobacco, tobacco extract and / or inhalable agent of a particular particle size, the coarseness of the substrate particles can be adjusted. Particles less than 50 μm, preferably less than 100 μm, are difficult to process, whereas particles greater than 1000 μm are not useful here, since the number of tobacco particles in the substrate particle may be too small to release sufficient flavor and / or stimulant to produce an aerosol.

[0014] In a preferred embodiment, the tobacco, extracts of tobacco and / or inhalable agents may preferably be any compound, mixture, particulate matter and / or solution that can be inhaled, for example as a gas and / or aerosol, and that contains and / or carries at least one of the following stimulants, for example caffeine, guarana, and combinations thereof. The tobacco may further essentially contain at least one type of tobacco, preferably at least two or more different types of tobacco. The use of a blend of different types of tobacco allows the flavor to be adjusted, and the flavor to be adjusted to a flavor preferred by the consumer.

[0015] In another embodiment, the inhalable agent and / or flavoring may be selected from the group consisting of, but not limited to, menthol, natural and / or artificial botanical flavors, sugars, animal flavors, and other flavorings known for use in conventional e-liquids, such as, but not limited to, cinnamon, sage, herbs, chamomile, kudzu (Pueraria lobata), sweet tea (Hydrangeae dulcis folium), clove, lavender, cardamom, cloves, nutmeg, bergamot, geranium, honey essence, rose oil, lemon, orange, cinnamon, caraway, jasmine, ginger, coriander, vanilla extract, spearmint, peppermint, cassia, coffee, celery, cascarilla, sandalwood, cocoa, ylang ylang, fennel, anise, licorice, carob (St John's The flavors may be selected from the following: bread, prune extract and peach extract; monosaccharides such as glucose, fructose, isomerized sugar and caramel; cocoa, such as powder and extract; esters such as isoamyl acetate, linalyl acetate, isoamyl propionate and linalyl butyrate; ketones such as menthone, ionones, damascenone and ethyl maltol; alcohols such as geraniol, linalool, anethole and eugenol; aldehydes such as vanillin, benzaldehyde and anisaldehyde; lactones such as γ-undecalactone and γ-nonalactone; animal flavors such as musk, ambergris, civet and beaver; and hydrocarbons such as limonene and pinene and combinations thereof. Such flavors or others may be used alone or in combination. The inhalable agent and / or flavour and / or combination of flavours may also be combined with at least one or more tobaccos such that the flavour of the substrate can be tailored to the consumer's optimum preferred flavour.

[0016] In a preferred embodiment, the humectant comprises glycerol, propylene glycol, ethanol and / or water. In addition, the humectant can comprise, but is not limited to, other alcohol and / or glycol derivatives, sebacate esters and / or mixtures thereof. A glycol derivative that can be used in certain embodiments is propylene glycol, and a suitable sebacate ester can be di-2-ethylhexyl sebacate. In addition, any possible combination of compounds belonging to the above-mentioned classes can be used. For example, a combination of glycerol and propylene glycol can be used as an aerosol former. The majority of these humectants are flavorless, and therefore do not mask the inherent flavor of tobacco, tobacco extracts and / or inhalable agents, such as flavors. However, flavorless humectants can still generate aerosols and vapes that carry the flavor of tobacco, tobacco extracts and / or inhalable agents, such as flavors. Moreover, the humectant contributes to the consistency and moldability of the substrate.

[0017] In yet another preferred embodiment, the amount of the mixture of propylene glycol and glycol is more than 10% by weight, preferably more than 20% by weight, preferably more than 30% by weight and / or less than 70% by weight, preferably less than 60% by weight, preferably less than 50% by weight of the substrate. Said ratio of propylene glycol to glycerol is 80:20 to 20:80, preferably 30:70 to 70:30, preferably 40:60 to 60:40, and ideally about 35:65. Glycerol and propylene glycol can be used in the same weight percentages, but also with different weight percentages, preferably more than 10%, preferably more than 30%, preferably more than 40% glycerol, as well as less than 90%, preferably less than 80%, preferably less than 70% glycerol in combination with more than 10%, preferably more than 30%, preferably more than 40% and less than 90%, preferably less than 80%, preferably less than 70% propylene glycol. Highly preferred is an excess of glycerol over propylene glycol.

[0018] The amount of propylene glycol can be 10% to 20% by weight of the base material, while the amount of glycerol is 20% to 30% by weight of the base material. Ideally, the maximum amount of propylene glycol to obtain a granular texture is 40% by weight of the base material. Thus, these two components can be suitably set in terms of their ratio. The ratio of propylene glycol to glycerol affects the base viscosity of the base material, with more glycerol resulting in a higher viscosity and therefore a better texture and moldability of the base material.

[0019] In a preferred embodiment, the amount of humectant, including for example water, glycol and / or propylene glycol, is greater than 10% by weight, preferably greater than 20% by weight, preferably greater than 30% by weight and less than 90% by weight, preferably less than 80% by weight, preferably less than 70% by weight, by weight of the substrate. Preferably, the humectant comprises water in an amount of greater than 1% by weight, preferably greater than 2% by weight, preferably greater than 3% by weight and / or less than 20% by weight, preferably less than 10% by weight, preferably less than 6% by weight, and ideally between 2% and 5% by weight, by weight of the aerosol-emitting substrate. Such an amount of humectant ensures the processability of the substrate during manufacture and releases a sufficient vape during smoking.

[0020] In a preferred embodiment, the stabilizer comprises carboxymethylcellulose and / or hydroxyalkylated carbohydrates. Preferably, purified carboxymethylcellulose is used, such as Ceroga 4550 C or CEKOL® 2000 (CERoeper GmbH). The stabilizer, such as carboxymethylcellulose, acts as a binder to make the substrate friable, further helps to prevent its collapse, and thickens it.

[0021] Another preferred embodiment includes a gelling agent that is a non-protein containing polysaccharide and / or is gellan gum, lecithin, agar and / or mixtures thereof. The gelling agent, especially gellan gum and preferably Gellan gum Roeper 700f, makes the substrate jelly-like so that it is moldable and even sieveable. The gelling agent keeps the substrate soft and fluffy. Without the gelling agent, the substrate would be too hard and too brittle.

[0022] In a preferred embodiment, the bulk density of the aerosol-emitting substrate is greater than or equal to 100 kg / m 3 More than 200 kg / m 3 More than 250 kg / m 3 and / or 500 kg / m 3 Less than 400 kg / m 3 Less than 350 kg / m 3 Ideally, the density is between 300 and 250 kg / m 3 The low density ensures good thermal conductivity and therefore the desired level of aerosol generation for the substrate. 3 ~350kg / m 3 The low density improves fluid flow through the substrate.

[0023] In a preferred embodiment, the aerosol-emitting substrate is suitable for being loaded into a pod. If the substrate is suitable for being loaded into a pod, the substrate can be used in e-cigarettes and similar heated devices.

[0024] The aim is to provide more breathability, as follows: a) forming a mixture by mixing an inhalable agent containing at least one of tobacco particles and / or stimulants and / or flavors, a gelling agent for gelling an aerosol-releasing substrate, a disintegration inhibitor and / or a thickening stabilizer, and 30-70% of a humectant; b) forming a soft granular structure from the mixture.

[0025] Preferably, the granular aerosol-releasing substrate produced in steps a) and b) has a composition and / or properties in accordance with one or more of the embodiments described above and below, and may in particular in accordance with the embodiments related to claims 1 to 10. Preferably, the liquid component and / or the humectant are mixed first, followed by at least one component of the gelling agent, preferably more or all of the gelling agent to create a mixture. Ideally, the mixture is aerated during mixing of the mixture, either mechanically or otherwise, such as by a jet of air. Such an order is beneficial for production, since it ensures good control of the soft consistency of the substrate. However, the various components of the gelling agent may be mixed before the liquid component, and / or the liquid component may be mixed with the gelling agent in the same step.

[0026] More solid ingredients, such as stabilizers, tobacco and / or inhalables, can then be added to the mixture of liquid and gelling ingredients. In that way, the consistency of the mixture can be best adjusted and processed. However, the order of adding ingredients to the mixture can be varied to best fit the production line. After the step of mixing the base ingredients is completed, in step b, the mixture is formed into a granular structure. To form the granular structure, the mixture is preferably sieved into a granular texture or the mixture is fed into an extruder. Another step can include crushing or milling the particles of the mixture or the sieved mixture to reduce the particle size to a much smaller size. Small particle size advantageously allows for high aerosol release and is easily administrable and processable.

[0027] In a preferred embodiment, an intermediate step between steps a) and b) comprises feeding the substrate to an extruder, and step b) comprises extruding and cutting the substrate through a die with at least one hole. Ideally, the die has a large number of holes. Preferably, the components of the mixture are placed in separate barrels and then fed to the extruder. After extruding the substrate, the substrate is cut by a cutting element such as a knife or a rotary knife. The number of holes in the die preferably depends on the desired size of the substrate granules and the size of the die. Ideally, the size of the holes depends on the desired size of the substrate granules, so that it is greater than 50 μm, preferably greater than 100 μm, preferably greater than 200 μm and / or less than 1000 μm, preferably greater than 900 μm, preferably greater than 800 μm. Taking into account industrial scale production, extrusion of the substrate is beneficial to reduce costs and make production more efficient.

[0028] Preferably, the mixture is mixed at ambient or low temperature conditions, and in particular at ambient temperature. Ambient temperature is thereby considered to be room temperature. Preferably, the temperature is above 5°C, preferably above 10°C, preferably above 15°C and below 100°C, preferably below 80°C, preferably below 60°C. The temperature is optimally between 18°C ​​and 40°C, preferably between 20°C and 30°C. However, it is possible for the components of the mixture to be mixed at above 100°C, preferably above 80°C, preferably above 50°C. The mixing step at ambient conditions avoids the activation of the binder before using the aerosol-releasing substrate.

[0029] In a preferred embodiment, the mixture is aged between step a) and step b).Ideally, the aging step is carried out at ambient or low temperature conditions.Using the aging step, the mixture becomes more solid and the agglomeration of the mixture is reduced.Therefore, the mixture can be sieved without agglomeration.

[0030] In a preferred embodiment, the mixture is aged for 1-10 hours, preferably 2-8 hours, and / or at a temperature below 60° C. Preferably, the mixture is aged in a closed container or box to ensure that the aging conditions are constant and not disturbed, for example due to fluctuations in temperature, pressure and / or humidity. The aging time may optimally be more than 1 hour, preferably more than 2 hours, preferably more than 4 hours and less than 40 hours, preferably less than 20 hours, preferably less than 10 hours. The optimal duration may be 1-24 hours, preferably 2-6 hours, preferably 3-5 hours. The mixture will have the best properties after being aged for a few hours or less.

[0031] In a preferred embodiment, steps a), b) and especially further intermediate steps are carried out at a temperature below 60° C., ideally at ambient temperature. Ambient temperature is considered to be room temperature. The temperature is above 5° C., preferably above 10° C., preferably above 15° C. and below 100° C., preferably below 80° C., preferably below 60° C. The temperature is optimally between 18° C. and 40° C., preferably between 20° C. and 30° C. However, it is possible that the components of the mixture are mixed at above 100° C., preferably above 80° C., preferably above 50° C. These temperatures will provide the best aging conditions to preserve the important properties of the mixture and to allow sufficient humectants to remain in the mixture without heating the mixture.

[0032] In a preferred embodiment, during step b the mixture is sieved to a particle size of more than 0.1 mm, preferably more than 0.5 mm, preferably more than 1 mm and / or to a particle size of less than 10 mm, preferably less than 5 mm, preferably less than 3 mm. Particles smaller than 0.1 mm are difficult to process. For this reason, larger particles are preferred. The larger the particles, the better they are processed. However, extremely large particles cannot be handled and / or cannot be packed into the pods of heated articles. EXAMPLES

[0033] The present invention will now be described in detail with reference to the following examples, which are illustrative only and are not intended to limit the scope of the present invention. Table 1a: Components used in Inventive Sample 1.

[0034] [Table 1]

[0035] Example 1a: Table 1 shows the components used in an exemplary embodiment of a soft particulate aerosol-releasing substrate. The soft aerosol-releasing substrate contains 40% to 50% humectant by weight of the aerosol-releasing substrate. The humectant includes 2% to 6% water, 10% to 20% propylene glycol, and 20% to 30% glycerol by weight of the substrate. This amount of humectant produces a soft consistency of the substrate.

[0036] The particulate aerosol-releasing substrate further contains a gelling agent, particularly in the form of gellan gum, in an amount of 4% to 8% by weight, based on the weight of the aerosol-releasing substrate. The gelling agent also serves to soften the substrate. The disintegration inhibitor and / or thickening stabilizer or binder, particularly based on cellulose and in particular on cellulose derivatives such as carboxymethylcellulose, is present in an amount of 14% to 20% by weight, based on the weight of the aerosol-releasing substrate.

[0037] In the aerosol-releasing substrate, tobacco is present in the form of particles, where the tobacco particle content is 30% to 40% by weight of the aerosol-releasing substrate. The size of the tobacco particles is preferably 0.4 mm to 0.8 mm. Larger size particles do not fit into the final particle size of the aerosol-releasing substrate, which is 0.4 mm to 3 mm in size, but the majority of the granules (90% by volume) are in the range of 0.8 mm to 2.5 mm. The particle size of the aerosol-releasing substrate and the tobacco particle size are measured by a Malvern 3000 laser diffraction particle size analyzer (v3.62) under dry dispersion.

[0038] The aerosol-emitting substrate is further 300 kg / m 3 The bulk density is determined by measuring the volume of three pieces of sample weighing 31.0±0.3g poured into a steel cylindrical bucket. The average value obtained from the density test results is calculated. Example 1b:

[0039] [Table 2]

[0040] The tobacco particles contain nicotine as a stimulant. Due to the high amount of tobacco particles, the release of nicotine is higher compared to Example 1, and therefore the sensory impact is also higher than that of Example 1. The size of the tobacco particles in this example is preferably 600 μm. Water is used to activate the binder that together forms a thickening stabilizer. Preferably, the binder is carboxymethylcellulose (CMC), more preferably Ceroga 4550C. The aerosol releasing substrates of Examples 1a and 1b contain the same visual and tactile properties. Example 2: To produce a soft particulate aerosol-releasing substrate, an exemplary embodiment of the method provides the following procedure.

[0041] First, the liquid components of the aerosol-releasing base, such as water, propylene glycol, and glycerin, are mixed at ambient conditions, particularly at room temperature, preferably at a mixing speed of level 5 for 3 minutes to create a mixture. Thus, the mixture is not heated. In the next step, a gelling agent in the form of gellan gum is added to the mixture, followed by tobacco particles and a stabilizer in the form of a cellulose derivative. During the entire mixing procedure, the mixture is aerated mechanically by a mixer or by a jet of air. Preferably, the mixture is mixed in a Kenwood mixer. Preferably, the mixture is mixed at a mixing speed of level 5 for 3 minutes after each addition of the components. The mixture is then removed from the mixer and the mixture is further mixed manually, or alternatively, mixed in the mixer at the lowest mixing speed until a homogenous color of the mixture is achieved.

[0042] After the mixture is created, it is aged in a closed container for at least 4 hours, preferably 24 hours, at ambient conditions, in particular at room temperature. The mixture is then neither actively heated nor actively dried, meaning that it is not affected by the heat technically generated during aging. Furthermore, the conditions are constant during the entire aging period. To form a granular structure, the mixture is finally sieved into a granular texture using a 1.7 mm sieve. Preferably, the mixture is sieved through a 1.7 mm sieve for 5 minutes at 280 rpm. This sieving process is repeated until the entire mixture has been sieved. The aerosol-releasing substrate now preferably contains a moisture content of 15.94%. Example 3: The process is carried out similarly to Example 2, except that the ingredients are placed in separate barrels and then fed into an extruder in which they are mixed at ambient conditions. Final shaping into granules is carried out using a die with multiple holes and a rotating knife which cuts the extruded aerosol-emitting substrate.

[0043] The applicant reserves the right to claim all features disclosed in the present application as essential features of the invention, insofar as they are novel, individually or in combination, in the light of the prior art. It should further be noted that the figures describe features that may be advantageous individually. Those skilled in the art will immediately recognize that a particular feature disclosed in a figure may be advantageous without the need to incorporate other features from this figure. Moreover, those skilled in the art will recognize that advantages may develop from a combination of various features disclosed in one or various figures.

Claims

1. It is breathable, and - an inhalable agent containing at least one of tobacco particles and / or stimulants and / or flavors; a gelling agent for gelling the aerosol-releasing substrate; - a disintegration inhibitor and / or a thickening stabilizer, Contains 30-70% moisturizer, having a particle size of more than 0.3 mm and / or less than 10 mm; The bulk density of the aerosol-emitting substrate is less than 500 kg / m 3 ; Aerosol releasing substrate.

2. 10. The aerosol-releasing substrate of claim 1, wherein the aerosol-releasing substrate has a particle size greater than 0.5 mm and / or less than 5 mm.

3. 3. The aerosol-emitting substrate of claim 1, wherein the weight of the tobacco particles and / or the inhalable agent is greater than 5% by weight of the aerosol-emitting substrate, and / or the weight of the tobacco particles and / or the inhalable agent is less than 70% by weight of the aerosol-emitting substrate.

4. 4. The aerosol-releasing substrate of claim 1, wherein the tobacco particles and / or inhalable agents contain at least one type of tobacco, an extract of tobacco and / or at least one non-tobacco flavouring, and wherein the tobacco type has a particle size greater than 100 μm (Dv90) and / or a particle size less than 1000 μm.

5. The aerosol-releasing substrate of any one of claims 1 to 4, wherein the humectant comprises glycerol, propylene glycol, ethanol and / or water.

6. 6. The aerosol-releasing substrate of claim 1, wherein the ratio of propylene glycol to glycerol is from 80:20 to 20:

80.

7. 7. The aerosol releasing substrate of claim 1, wherein the viscosity stabilizing agent comprises carboxymethylcellulose and / or a hydroxyalkylated carbohydrate.

8. 8. The aerosol-releasing substrate according to claim 1 , wherein the anti-disintegrant and / or thickening stabilizer is greater than 8% by weight and / or less than 30% by weight of the aerosol-releasing substrate.

9. 9. The aerosol releasing substrate of claim 1, wherein the gelling agent is a non-protein containing polysaccharide and / or comprises gellan gum, lecithin, agar and / or mixtures thereof.

10. 10. The aerosol-releasing substrate according to claim 1 , wherein the gelling agent in the aerosol-releasing substrate is greater than 2% by weight and / or less than 12% by weight, by weight of the aerosol-releasing substrate.

11. The bulk density of the aerosol-emitting substrate is 100 kg / m ３ The aerosol-releasing substrate according to any one of claims 1 to 10, wherein the aerosol-releasing substrate has a viscosity of more than 1000 MPa.

12. 12. An aerosol-releasing substrate according to any one of the preceding claims, wherein the aerosol-releasing substrate is suitable for being filled into pods.

13. It is breathable and has the following: a) forming a mixture by mixing an inhalable agent containing at least one of tobacco particles and / or stimulants and / or flavors, a gelling agent for gelling an aerosol-releasing substrate, a disintegration inhibitor and / or a thickening stabilizer, and 30-70% of a humectant; b) forming a granular structure from the mixture; The bulk density of the aerosol-emitting substrate is less than 500 kg / m 3 ; A method for making a particulate aerosol-emitting substrate for use in a heated device.

14. 14. The method of claim 13, wherein step b) comprises sieving the mixture to produce the granular structure.

15. 15. The method of claim 14, wherein an intermediate step between steps a) and b) comprises feeding the aerosol-releasing substrate into an extruder, and step b) comprises extruding and cutting the aerosol-releasing substrate through a die comprising a plurality of holes.

16. The method according to any one of claims 13 to 15, wherein the mixture is aged.

17. The method according to claim 13 or 16, wherein the mixture is aged for 1 to 10 hours and / or at a temperature below 60°C.

18. 18. The method according to any one of claims 13 to 17, wherein the process is carried out at a temperature below 60°C.

19. The method according to any one of claims 13 to 18, wherein the mixture is sieved to a particle size greater than 0.3 mm and / or less than 10 mm.

20. The bulk density of the aerosol-emitting substrate is 100 kg / m ３ The method according to any one of claims 13 to 19, wherein the

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