Tobacco material, aerosol-generating article, and method of manufacturing tobacco material

Abstract

Embodiments of the present disclosure disclose a tobacco material including: a central portion including a flavor substance; and an outer portion including a tobacco blend, wherein the outer portion surrounds the central portion. Embodiments of the present disclosure also disclose an aerosol generating article and a method of manufacturing a tobacco material.

Description

Technical Field

[0001] Various embodiments of this disclosure relate to tobacco substances including flavoring substances and methods for manufacturing the tobacco substance. Background Technology

[0002] Recently, there has been an increase in demand for alternatives to traditional cigarettes. For example, there is a growing demand for devices that generate aerosols by heating aerosol-generating substances in aerosol-generating articles (e.g., cigarettes) without combustion. Summary of the Invention

[0003] Technical issues

[0004] To improve the tobacco flavor provided by aerosol-generated articles, flavoring substances can be added. However, given the high volatility of flavoring substances, a significant amount evaporates in the early stages of smoking, potentially resulting in a less even distribution of flavor throughout the smoking process.

[0005] The purpose of this disclosure is to provide a tobacco substance comprising flavoring substances and a method for manufacturing the tobacco substance.

[0006] The technical problems to be solved by this disclosure are not limited to those described above, and other objectives may be derived from the embodiments described below.

[0007] Technical solutions to the problem

[0008] According to an embodiment, the tobacco substance includes: a central portion containing a flavoring substance; and an outer portion comprising a tobacco mixture, wherein the outer portion is formed to surround the central portion.

[0009] According to an embodiment, a method for manufacturing a tobacco substance includes: forming a central portion by growing a first composition; and forming an outer portion to surround the central portion.

[0010] The means of solving the problem are not limited to this, and may include all constructions that a person skilled in the art could derive from the entire specification.

[0011] Beneficial effects of the present invention

[0012] According to various embodiments of this disclosure, tobacco substances can effectively contain flavor and can provide flavor evenly during the user's smoking.

[0013] According to various embodiments of this disclosure, the efficiency of the process for manufacturing tobacco substances can be improved, and the yield can be increased through the process.

[0014] The effects of this disclosure are not limited to these, and may include all effects that can be derived from the constructions described below. Attached Figure Description

[0015] Figure 1 This is a view of a tobacco substance according to an embodiment.

[0016] Figure 2A This is a view of a tobacco substance according to another embodiment.

[0017] Figure 2B This is a view of a tobacco substance according to another embodiment.

[0018] Figure 3A This is a view of a smoking article according to an embodiment.

[0019] Figure 3B This is a view of a smoking product according to another embodiment.

[0020] Figure 3C This is a view of a smoking product according to another embodiment.

[0021] Figure 3D This is a view of a smoking product according to another embodiment.

[0022] Figure 4 This is a flowchart of a method for manufacturing tobacco substances according to an embodiment.

[0023] Figure 5A and Figure 5B The first operation of a method for manufacturing tobacco substances according to an embodiment is shown.

[0024] Figures 5C to 5E A second operation of the method for manufacturing tobacco substances according to an embodiment is shown.

[0025] Figure 6 It is a graph showing the amount of menthol emitted from a series of inhaled tobacco substances according to an embodiment. Detailed Implementation

[0026] Regarding the terminology used to describe various embodiments, generally used terms are selected in consideration of the function of the structural elements in the various embodiments of this disclosure. However, the meanings of these terms may change depending on intent, judicial precedent, the emergence of new technologies, etc. Additionally, in some cases, less commonly used terms may be selected. In such cases, the meaning of the term will be described in detail in the corresponding section of the description of this disclosure. Therefore, the terminology used in the various embodiments of this disclosure should be defined based on the meanings and descriptions of the terms provided herein.

[0027] Furthermore, unless explicitly stated otherwise, the term "comprising" and variations such as "including" or "including" will be understood to mean including the stated element but not excluding any other element. Additionally, the terms "device," "component," and "module" described in the application refer to a unit for performing at least one function and operation, and can be implemented by hardware components or software components and combinations thereof.

[0028] Throughout the specification, "tobacco substance" may refer to any type of substance including components derived from the tobacco plant.

[0029] Throughout this specification, "tobacco particles" may refer to particles of a substance derived from the tobacco plant. For example, tobacco particles may include fine tobacco grains or tobacco powder.

[0030] Throughout this instruction manual, "smoking articles" may refer to articles used by a user for smoking. For example, smoking articles may include combustible cigarettes or non-combustible aerosol-generating articles heated by an aerosol-generating device.

[0031] Throughout the specification, "surface roughness" can refer to the degree of roughness of an object's surface. For example, surface roughness can be expressed by the centerline mean roughness (Ra) based on the KSB 0161 standard.

[0032] The terms used in this specification, including ordinal numbers such as "first" and "second," may be used to describe various components, but components should not be limited by these terms. These terms are used only to distinguish one component from another.

[0033] As used herein, expressions such as “at least one of…” modify the entire list of elements when placed after the list of elements, rather than the individual elements in the list. For example, the expression “at least one of a, b, and c” should be understood as: including only a, including only b, including only c, including both a and b, including both a and c, including both b and c, or including all of a, b, and c.

[0034] In the following description, the present disclosure will now be described more fully with reference to the accompanying drawings, in which exemplary embodiments of the present disclosure are shown to enable those skilled in the art to readily implement the present disclosure. However, the present disclosure may be implemented in many different forms and should not be construed as limited to the embodiments set forth herein.

[0035] The embodiments of this disclosure will now be described in detail with reference to the accompanying drawings.

[0036] Figure 1 This is a view of a tobacco substance according to an embodiment.

[0037] refer to Figure 1The tobacco substance 100 may include a central portion 110 containing flavor substances and an outer portion 120 containing a tobacco mixture. Specifically, the tobacco substance 100 may be formed with a core-shell structure in which the outer portion 120 surrounds the central portion 110. The tobacco substance 100 may generally have a spherical shape.

[0038] According to an embodiment, the central portion 110 may include a fragrance substance. More specifically, the central portion 110 may include a highly volatile fragrance substance. For example, the fragrance substance may include menthol. The central portion 110 may be formed to include at least one of a menthol solution and menthol crystals.

[0039] However, flavoring substances are not limited to menthol and can be modified in various ways depending on the manufacturer's design.

[0040] For example, aromatic substances can include vegetable spices such as cinnamon, sage, vanilla, chamomile, wintersweet, sweet tea, lavender, bergamot, lemon, orange, jasmine, ginger, vanilla, spearmint, peppermint, gum arabic, coffee, celery, sandalwood, cocoa, etc.

[0041] Fragrance substances can include animal fragrances, such as musk, ambergris, civet cat, and castoreum.

[0042] Fragrance substances can include alcohol compounds, such as geraniol, linalool, anethole, and eugenol. Fragrance substances can also include aldehyde compounds, such as vanillin, benzaldehyde, and anisaldehyde. Furthermore, fragrance substances can include ester compounds, such as isoamyl acetate, linalyl acetate, isoamyl propionate, and linalyl butyrate.

[0043] According to an embodiment, the central portion 110 may include flavoring substances and tobacco particles. The tobacco particles may include various types of tobacco powder. For example, the tobacco particles may include at least one type of tobacco powder selected from xanthophyll-type tobacco, burley tobacco, roasted tobacco, sun-dried tobacco, and air-dried tobacco.

[0044] According to the embodiment where the central portion 110 includes flavoring substances and tobacco particles, the flavoring substances can be laminated onto the seed portion formed from the tobacco particles. For example, after the tobacco particles are formed into seed portions of a predetermined size through a series of processes, a menthol solution can be laminated onto the seed portion of the formed tobacco particles, and then drying can be performed.

[0045] According to an embodiment, based on the total weight (100 wt%) of the central portion 110, at least 95 wt% of flavoring material may be included in the central portion 110. Therefore, the flavoring material can be evenly inhaled by the user during smoking. However, the weight percentage of the flavoring material is not limited to this and can be modified in various ways according to the manufacturer's design.

[0046] According to an embodiment, the central portion 110 may include a tobacco clump containing flavoring substances. For example, the central portion 110 may be formed from a clump comprising flavoring substances, tobacco particles, and a solvent (e.g., H2O). The viscosity of the central portion 110 may depend on the amount of solvent in the clump. Thereafter, even after removing the solvent, the central portion 110 may substantially comprise a suitable amount of water. Reference will be made below. Figures 5A to 5E Describe the detailed process of manufacturing the central section 110.

[0047] According to an embodiment, the outer portion 120 may include a tobacco mixture. The tobacco mixture may include tobacco particles, which include various types of tobacco powder. For example, the tobacco particles may include tobacco powder from at least one type selected from xanthophyll-type tobacco, burley tobacco, roasted tobacco, sun-dried tobacco, and air-dried tobacco.

[0048] According to an embodiment, the outer portion 120 may include a tobacco clump containing tobacco particles. For example, the outer portion 120 may include a clump containing tobacco particles and a solvent. The viscosity of the outer portion 120 may depend on the amount of solvent in the clump. Thereafter, even if the solvent is removed, the outer portion 120 may substantially comprise a suitable amount of water. Reference will be made below. Figures 5A to 5E Describe the detailed process of manufacturing the external part 120.

[0049] According to an embodiment, the central portion 110 may have a diameter D1. For example, D1 may be from about 0.01 mm to about 0.3 mm. More specifically, D1 may be from about 0.01 mm to about 0.15 mm. However, the diameter of the central portion 110 is not limited to this. According to an embodiment, the outer portion 120 may have a diameter D2. For example, D2 may be from about 0.5 mm to about 1.99 mm. More specifically, D2 may be from about 0.65 mm to about 1.99 mm. However, the diameter of the outer portion 120 is not limited to this.

[0050] According to the embodiments, the amount of aroma substance released from tobacco substance 100 and the duration of aroma substance release can vary depending on the diameter of the outer portion 120. For example, when the diameter of the outer portion 120 is equal to or greater than about 2 mm, the duration of aroma substance release may be delayed, and therefore the amount of aroma substance released during smoking may be uneven. When the diameter of the outer portion 120 is less than about 0.5 mm, the duration of aroma substance release may begin earlier, and therefore the aroma substance may not be released evenly during smoking. When the diameter of the outer portion 120 is from about 0.5 mm to about 1.99 mm, the duration of aroma substance release in the central portion 110 can become suitable for uniform release of the aroma substance.

[0051] According to an embodiment, the tobacco substance 100 may include about 5.0 wt% to about 8.0 wt% water. When the tobacco substance 100 contains water within the said numerical range, at least one of the rigidity, aroma retention properties, and aroma emission properties of the tobacco substance 100 may be improved. If the tobacco substance 100 contains less than about 5.0 wt% water, the aroma emission properties of the tobacco substance 100 may be reduced. On the other hand, if the tobacco substance 100 contains more than about 8.0 wt% water, the tobacco substance 100 may have low rigidity.

[0052] The central portion 110 may contain about 8.0 wt% to about 15.0 wt% water. When the central portion 110 contains water within the said numerical range, at least one of the aroma retention characteristics and aroma emission characteristics of the central portion 110 may be improved. Furthermore, when the water content of the central portion 110 is higher than that of the outer portion 120, the tobacco material 100 may have high rigidity and excellent aroma retention and aroma emission characteristics.

[0053] According to an embodiment, the tobacco substance 100 may have a viscosity of about 5 cp to about 200 cp. When the tobacco substance 100 has a viscosity within the said numerical range, at least one of the rigidity, aroma retention properties, and aroma emission properties of the tobacco substance 100 can be improved. The viscosity of the tobacco substance 100 can be adjusted by the amount of water.

[0054] According to the embodiment, the tobacco material 100 may have a rigidity of 90% or higher. Specifically, the tobacco material 100 may have a rigidity of about 95% to about 99.9%. "Rigidity of the tobacco material" is a characteristic related to elasticity and resilience, and can represent the degree of resistance relative to a pressure applied vertically to the tobacco material 100. "Rigidity of the tobacco material" can be measured using a rigidity measuring device and calculated according to the following formula.

[0055] Stiffness (%) = [Da] * 100 / D

[0056] (D: Diameter of the tobacco material, a: Distance (mm) of tobacco material compressed by 300g weight)

[0057] According to an embodiment, the tobacco substance 100 may have a density of about 0.60 g / cc to about 0.90 g / cc. Specifically, the tobacco substance 100 may have a density of about 0.62 g / cc to about 0.75 g / cc. According to an embodiment, the central portion 110 of the tobacco substance 100 may have a density of about 0.50 g / cc to about 0.70 g / cc.

[0058] According to an embodiment, the tobacco material 100 may have a surface roughness Ra of about 0.1 to about 10.0. Referring below... Figure 2A and Figure 2B Describe in detail aspects of the surface roughness Ra of tobacco material 100.

[0059] Figure 2A This is a view of a tobacco substance according to another embodiment.

[0060] refer to Figure 2A The tobacco substance 200 may include a central portion 210 containing flavor substances and an outer portion 220 containing a tobacco mixture. More specifically, the tobacco substance 200 may be formed having the outer portion 220 surrounding the central portion 210. (Refer to above) Figure 1 The description of the central part 210 and the outer part 220 is given, so the same description is omitted here.

[0061] According to an embodiment, the tobacco substance 200 may have a spherical shape as a whole. According to an embodiment, when the central portion 210 of the tobacco substance 200 has a spherical shape, the outer portion 220 surrounding the central portion 210 may also have a spherical shape.

[0062] According to an embodiment, the outer portion 220 of the tobacco material 200 may have a predetermined surface roughness Ra.

[0063] For example, the outer portion 220 may have a surface roughness Ra of about 0.1 to about 5.0, forming a substantially smooth surface. When the outer portion 220 has a substantially smooth surface, the amount of tobacco substance 200 that may be included in a smoking article (not shown) may be increased. Furthermore, by adjusting the porosity of the surface of the outer portion 220, the aroma emission characteristics of the tobacco substance 200 can be adjusted.

[0064] As another example, the outer portion 220 may have a surface roughness Ra of about 5.0 to about 10.0. When the outer portion 220 has a surface roughness Ra within the above-mentioned numerical range, a substantially rough surface can be formed. As the surface roughness Ra of the outer portion 220 increases, the aroma emission characteristics can be improved. When multiple tobacco substances 200, including the outer portion 220 with a substantially rough surface, are included in a smoking article (not shown), the multiple tobacco substances 200 can be stably held by the smoking article due to the increased friction, and the amount of nicotine released can increase due to the increased surface area of ​​the tobacco substances 200.

[0065] Figure 2B This is a view of a tobacco substance according to another embodiment.

[0066] refer to Figure 2BThe tobacco substance 300 may include a central portion 310 containing flavor substances and an outer portion 320 containing a tobacco mixture. More specifically, the tobacco substance 300 may be formed with the outer portion 320 surrounding the central portion 310. (See above for reference.) Figure 1 The description of the central part 310 and the outer part 320 is given, so the same description is omitted.

[0067] According to the embodiment, the tobacco material 300 may have a twisted spherical shape. For example, during the manufacturing process of the tobacco material 300, when the shape of the central portion 310 is not substantially spherical, the shape of the outer portion 320 that grows to surround the central portion 310 may also not be substantially spherical. Therefore, as... Figure 2B As shown, tobacco substance 300 can have an amorphous shape.

[0068] For example, the outer portion 320 may have a surface roughness Ra of about 0.1 to about 5.0. When the surface roughness Ra of the outer portion 320 is within the above-mentioned range, a substantially smooth surface can be formed. When the outer portion 320 has a substantially smooth surface, the amount of tobacco substance 300 that may be included in a smoking article (not shown) may be increased. Furthermore, by adjusting the porosity of the surface of the outer portion 320, the aroma emission characteristics of the tobacco substance 300 can be adjusted.

[0069] As another example, the outer portion 320 may have a surface roughness Ra of about 5.0 to about 10.0. When the outer portion 320 has a surface roughness Ra within the above-mentioned numerical range, a substantially rough surface can be formed. As the surface roughness Ra of the outer portion 320 increases, the aroma emission characteristics can be improved. When multiple tobacco substances 300, including the outer portion 320 with a substantially rough surface, are included in a smoking article (not shown), the multiple tobacco substances 300 can be stably held by the smoking article due to the increased friction, and the amount of inhaled nicotine can be increased due to the increased surface area of ​​the tobacco substances 300.

[0070] Figure 3A This is a view of a smoking article according to an embodiment.

[0071] refer to Figure 3A The smoking article 400 may include a first portion 410 and a second portion 420. The first portion 410 may be a smoking stick, and the second portion 420 may be a filter section. For example, the smoking article 400 may be a combustible cigarette.

[0072] According to an embodiment, the first part 410 may include a variety of tobacco substances 411. The tobacco substance 411 may correspond to... Figures 1 to 2BThe tobacco substances 100, 200, and 300. According to the embodiment, the first part 410 can be ignited and burned by the user.

[0073] According to an embodiment, the second portion 420 may be a filter segment including a filter material. For example, the second portion 420 may be a cellulose acetate (CA) filter. The second portion 420 may be a cylindrical filter or a hollow filter, but the shape of the second portion 420 is not particularly limited. The user can smoke by holding the second portion 420 in his or her mouth.

[0074] According to the embodiment, when the first portion 410 is burned, a flavor can be generated from various tobacco substances 411. For example, when menthol, as a flavoring substance, is contained in the central portion of the tobacco substance 411, the menthol flavor can be released after the initial stage of smoking has passed.

[0075] Figure 3B This is a view of a smoking product according to another embodiment.

[0076] refer to Figure 3B The smoking article 500 may include a first part 510, a second part 520, a third part 530, and a fourth part 540. The first part 510, the second part 520, the third part 530, and the fourth part 540 may be arranged sequentially along the longitudinal direction of the smoking article 500. For example, the smoking article 500 may generate an aerosol when heated without combustion.

[0077] According to an embodiment, the first part 510 may include a variety of tobacco substances 511. The tobacco substance 511 may correspond to... Figures 1 to 2B The tobacco substances 100, 200, and 300. According to an embodiment, the first portion 510 may further include an aerosol-generating substance. The aerosol-generating substance can be sprayed onto the surface of the tobacco substance 511. For example, the aerosol-generating substance may include at least one of glycerol, propylene glycol, ethylene glycol, dipropylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, and oleyl alcohol. According to an embodiment, the first portion 510 may be heated by an aerosol-generating device (not shown).

[0078] According to an embodiment, the second part 520 may be a support member that supports the smoking article 500. For example, the second part 520 may be a hollow filter. The second part 520 may connect the first part 510 and the third part 530 and support both the first part 510 and the third part 530.

[0079] According to an embodiment, the third portion 530 may be a cooler configured to cool the airflow (i.e., aerosol). For example, the third portion 530 may be a hollow tube or a paper tube. The hollow tube or paper tube may include a ventilation area (not shown) through which outside air can flow into the smoking article 500. The third portion 530 may cool the aerosol generated from the first portion 510.

[0080] According to an embodiment, the fourth portion 540 may be a filter segment including a filter material. For example, the fourth portion 540 may be a cellulose acetate (CA) filter. The fourth portion 540 may be a cylindrical filter or a hollow filter, but the shape of the fourth portion 540 is not particularly limited. The user can smoke by holding the fourth portion 540 in his or her mouth.

[0081] Figure 3C This is a view of a smoking product according to another embodiment.

[0082] refer to Figure 3C The smoking article 600 may include a first part 610, a second part 620, a third part 630, and a fourth part 640. The first part 610, the second part 620, the third part 630, and the fourth part 640 may be arranged sequentially along the longitudinal direction of the smoking article 600. For example, the smoking article 600 may generate an aerosol when heated without combustion.

[0083] According to the embodiment, the first portion 610 may be a filter tip segment. For example, the first portion 610 may be a cellulose acetate (CA) filter tip with a cavity of a predetermined shape. Specifically, the first portion 610 may be a CA filter tip with a cavity in the shape of a "human", but is not limited thereto.

[0084] According to an embodiment, the second part 620 may include tobacco substance 621. Tobacco substance 621 may correspond to... Figures 1 to 2B The tobacco substances 100, 200, and 300. According to an embodiment, the second part 620 may also include an aerosol-generating substance. For example, the aerosol-generating substance may include at least one selected from glycerol, propylene glycol, ethylene glycol, dipropylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, and oleyl alcohol. The second part 620 may be heated by an aerosol-generating device (not shown).

[0085] According to an embodiment, the third portion 630 may be a cooler configured to cool the airflow (i.e., aerosol). For example, the third portion 630 may be a hollow tube or a paper tube. The hollow tube or paper tube may include a ventilation area (not shown) through which outside air flows into the smoking article 600.

[0086] According to an embodiment, the fourth portion 640 may be a filter segment including a filter material. For example, the fourth portion 640 may be a cellulose acetate (CA) filter. The fourth portion 640 may be a cylindrical filter or a hollow filter, but the shape of the fourth portion 640 is not particularly limited. The user can smoke by holding the fourth portion 640 in his or her mouth.

[0087] Figure 3D This is a view of a smoking product according to another embodiment.

[0088] refer to Figure 3D The smoking article 700 may include a first part 710, a second part 720, a third part 730, and a fourth part 740. The first part 710, the second part 720, the third part 730, and the fourth part 740 may be arranged sequentially along the longitudinal direction of the smoking article 700. For example, the smoking article 700 may generate an aerosol when heated without combustion.

[0089] According to an embodiment, the first portion 710 may be an aerosol generating matrix. For example, the aerosol generating matrix may include a paper sheet impregnated with an aerosol generating substance. The aerosol generating substance may include at least one of glycerol, propylene glycol, ethylene glycol, dipropylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, and oleyl alcohol. The first portion 710 may be heated by an aerosol generating apparatus (not shown).

[0090] According to one embodiment, the second portion 720 may be a nicotine-generating matrix. According to another embodiment, the second portion 720 may include tobacco substance 721. Tobacco substance 721 may correspond to... Figures 1 to 2B The tobacco substances 100, 200, and 300. According to an embodiment, the second portion 720 may include tobacco substance 721 and a paper sheet impregnated with an aerosol-generating substance. The second portion 720 may be heated by an aerosol-generating device (not shown).

[0091] According to an embodiment, the third portion 730 may be a cooler configured to cool the airflow (i.e., aerosol). For example, the third portion 730 may be a hollow tube or a paper tube. The hollow tube or paper tube may include a ventilation area (not shown) through which outside air flows into the smoking article 700.

[0092] According to an embodiment, the fourth portion 740 may be a filter segment including a filter material. For example, the fourth portion 740 may be a cellulose acetate (CA) filter. The fourth portion 740 may be a cylindrical filter or a hollow filter, but the shape of the fourth portion 740 is not particularly limited. The user can smoke by holding the fourth portion 740 in his or her mouth.

[0093] Figure 4This is a flowchart of a method for manufacturing tobacco substances according to an embodiment.

[0094] refer to Figure 4 The method S100 for manufacturing tobacco substances may include a first operation S110 and a second operation S120.

[0095] According to an embodiment, the first operation S110 may correspond to the operation of forming a central portion of the tobacco substance by causing the first composition to grow. According to an embodiment, the first composition may comprise a flavoring substance and water. Specifically, the first composition may comprise about 95 wt% to about 99 wt% of the flavoring substance and about 1 wt% to about 5 wt% of water. According to another embodiment, the first composition may comprise a flavoring substance, tobacco powder, and water. Specifically, the first composition may comprise about 95 wt% to about 99 wt% of the flavoring substance, about 0.14 wt% to about 0.71 wt% of the tobacco powder, and about 0.86 wt% to about 4.29 wt% of water. For example, the amount of water contained in the first composition may be about six times the amount of tobacco powder in the first composition.

[0096] According to an embodiment, in the first operation S110, the first composition can be floated in a room, supplied with water at a temperature of about 60°C or lower, and dried with hot air for about six hours.

[0097] According to an embodiment, the second operation S120 may correspond to the operation of forming an outer portion surrounding the formed central portion using the second composition. According to an embodiment, the second composition may include tobacco powder and a solvent. The solvent may include a water-ethanol solution. Specifically, the second composition may contain about 14 wt% to about 15 wt% tobacco powder, about 51 wt% to about 52 wt% water, and about 34 wt% to about 35 wt% ethanol.

[0098] According to the embodiment, the amount of water included in the central portion formed in the first operation S110 can be about 8% to about 15% of the total weight of the tobacco material. In addition, the central portion can have a rigidity of about 85% to about 95%.

[0099] According to the embodiment, the outer portion formed in the second operation S120 can have a relatively lower water content and higher rigidity than the central portion. The amount of water contained in the tobacco material formed by the second operation S120 can be about 5% to about 8% of the total weight of the tobacco material. Furthermore, the outer portion can have a rigidity of about 95% to about 99.9%. Therefore, the tobacco material can have a rigidity of about 95% to about 99.9%.

[0100] The following will refer to Figures 5A to 5EThe first operation S110 and the second operation S120 are described in detail. Specifically, the first operation S110 can be found below. Figures 5A to 5C The second operation S120 is described below. Figures 5D to 5E describe.

[0101] Figure 5A and Figure 5B The first operation of a method for manufacturing tobacco substances according to an embodiment is shown.

[0102] Reference Figure 5A An apparatus for manufacturing tobacco substances may include a chamber 900, a first reservoir 910, a second reservoir 920, and a supply section 930. According to an embodiment, the first reservoir 910 may store a first composition, and the second reservoir 920 may store a second composition. For example, the first reservoir 910 may include a first composition containing a flavoring substance and water. The second reservoir 920 may include a second composition containing tobacco powder and a solvent. As another example, the first reservoir 910 may include a first composition comprising a flavoring substance, tobacco powder, and water.

[0103] According to one embodiment, the first storage unit 910 and the second storage unit 920 can be connected to the supply section 930 via a first valve 915 and a second valve 925, respectively. For example, when the first valve 915 is open, the first composition stored in the first storage unit 910 can be supplied to the chamber 900 via the supply section 930. Simultaneously, the second valve 925 can remain closed. As another example, when the second valve 925 is open, the second composition stored in the second storage unit 920 can be supplied to the chamber 900 via the supply section 930. Simultaneously, the first valve 915 can remain closed.

[0104] According to the implementation method, the first operation (e.g., Figure 4 The first operation (S110) may include supplying the first composition 940 from the first reservoir 910 to the chamber 900 via the supply section 930. For example, the first composition 940 may be sprayed into the chamber 900.

[0105] refer to Figure 5B The first operation S110 may include the operation of growing the first composition 940 injected into the chamber 900 under predetermined conditions. For example, the predetermined conditions under which the first composition 940 may grow may include a temperature in the range of about 30°C to about 60°C and a wind pressure equal to or less than 1.5 bar.

[0106] According to an embodiment, the first composition 940 can grow into a seed portion 960 having a first size under predetermined conditions. For example, when the first composition 940 is supplied to a chamber 900 and outside air 950 is introduced from the outside under predetermined conditions, the first composition 940 can grow into a seed portion 960 having the first size. Subsequently, over time, the seed portion 960 having the first size can grow into a seed portion 962 having a second size, and the seed portion 962 having the second size can grow into a seed portion 964 having a third size.

[0107] Figures 5C to 5E A second operation of the method for manufacturing tobacco substances according to an embodiment is shown.

[0108] Reference Figure 5C The second operation (e.g., Figure 4 The second operation S120 may include positioning the central portion 970 formed in the first operation S110 within the chamber 900. For example, the central portion 970 formed in the first operation S110 may represent a first composition grown into a seed portion having a predetermined size. Here, the predetermined size may represent the diameter of the central portion (e.g., Figure 1 The diameter of the central part (D1) can vary depending on the manufacturer's design.

[0109] According to an embodiment, the central portion 970 formed in the first operation S110 can accumulate at the bottom of the chamber 900. Here, the central portion 970 can have a predetermined water content that will not cause multiple central portions 970 to adhere together. For example, the central portion 970 can be grown under conditions including a temperature range of about 30°C to about 60°C and a wind pressure equal to or lower than about 1.5 bar. Then, the central portion 970 can be dried to include the predetermined water content, and then the central portion 970 can accumulate at the bottom of the chamber 900.

[0110] refer to Figure 5D The second operation S120 may include fluidizing the central portion 970 located in the chamber 900. According to an embodiment, the central portion 970 may be fluidized when outside air 950 is introduced into the chamber 900 from the outside under predetermined conditions. For example, the predetermined conditions for fluidizing the central portion 970 may include a temperature in the range of about 50°C to about 90°C and a wind pressure equal to or lower than about 1.5 bar.

[0111] According to an embodiment, the second operation S120 may include supplying the second composition 980 from the second reservoir 920 into the chamber 900 via the supply section 930. For example, the second composition 980 may be sprayed into the chamber 900.

[0112] According to an embodiment, the second composition 980 supplied from the second reservoir 920 can grow to surround the central portion 970. For example, friction may occur between the central portion 970 and the second composition 980 as the central portion 970 moves upward through the outside air 950 in the chamber 900 and the second composition 980 supplied from the second reservoir 920 moves downward in the chamber 900. Through friction, the second composition 980 can grow around the central portion 970 to surround it.

[0113] refer to Figure 5E The second operation S120 may include the accumulation of final tobacco material 990 in chamber 900, wherein the second composition 980 grows to surround the central portion 970. For example, the final tobacco material 990 formed in the second operation S120 may represent material grown into particles of a predetermined size. Here, the predetermined size may represent the diameter of the tobacco material (e.g., from about 0.8 mm to about 2.0 mm), which may vary according to the manufacturer's design.

[0114] According to an embodiment, the first composition can be grown in the first operation S110 at a temperature lower than that of the second composition grown in the second operation S120. Since the first composition may include flavor substances, growing the first composition at a temperature lower than that of the second composition can improve the flavor retention and flavor release properties of the tobacco substances.

[0115] Figure 6 A graph showing the amount of menthol emitted from a series of inhaled tobacco substances according to an embodiment is presented.

[0116] refer to Figure 6 The graph corresponding to Comparative Embodiment 600 can indicate the amount of menthol released during a series of inhalations when menthol is contained in the media portion in the form according to the prior art. According to Embodiment 610, the graph corresponding to Embodiment 610 can indicate the amount of menthol released during a series of inhalations when menthol is contained in the media portion and / or filter in the form of tobacco material according to the present disclosure.

[0117] According to Comparative Embodiment 600, the amount of menthol released is greatest in the early stages of smoking (e.g., from the third to the fifth puff), corresponding to the initial phase of smoking, and least in the later stages of smoking (e.g., from the tenth to the fourteenth puff). In other words, the amount of menthol released may decrease dramatically as smoking progresses. Therefore, near the end of smoking, the user may hardly experience the aroma of menthol.

[0118] In the initial stage of smoking, the amount of menthol emitted according to Embodiment 610 can be less than the amount of menthol emitted according to Comparative Embodiment 600. However, in the later stage of smoking, the amount of menthol emitted according to Embodiment 610 can be greater than the amount of menthol emitted according to Comparative Embodiment 600. That is, according to Embodiment 610, the amount of menthol emitted can gradually increase as smoking progresses, so the user can experience the aroma of menthol evenly throughout the smoking time.

[0119] Those skilled in the art related to this embodiment will understand that various changes in form and detail may be made therein without departing from the scope of the above features. The disclosed methods should be considered descriptive only and not for limiting purposes. The scope of this disclosure should be defined by the appended claims, and all differences from the equivalents described in the claims will be interpreted as being included within the scope of protection defined by the claims.

Claims

1. A tobacco substance for use in aerosol-generating articles, wherein, The tobacco substance includes: The central portion, said central portion including a fragrance substance; and The outer portion, comprising a tobacco mixture and surrounding the central portion, The central portion has a diameter of 0.01 mm to 0.3 mm, and the outer portion has a diameter of 0.5 mm to 1.99 mm. The water content in the central portion is higher than that in the outer portion, and The tobacco substance contains 5.0 wt% to 8.0 wt% water relative to the total weight of the tobacco substance.

2. The tobacco substance according to claim 1, wherein, The central portion also includes tobacco particles, and the flavoring substance includes menthol.

3. The tobacco substance according to claim 1, wherein, The central portion comprises at least 95 wt% of the aroma substance relative to the total weight of the central portion.

4. The tobacco substance according to claim 1, wherein, The central portion has a diameter of 0.01 mm to 0.15 mm, and the outer portion has a diameter of 0.65 mm to 1.99 mm.

5. The tobacco substance according to claim 1, wherein, The tobacco substance has a viscosity of 5 cp to 200 cp.

6. The tobacco substance according to claim 1, wherein, The tobacco material has a surface roughness Ra of 0.1 to 10.

0.

7. The tobacco substance according to claim 1, wherein, The tobacco substance has a spherical shape.

8. An aerosol-generating product, wherein, The aerosol-generating products include: Tobacco sticks, the tobacco sticks comprising tobacco material according to any one of claims 1-7; and Filter tip section.

9. A method for manufacturing a tobacco substance for aerosol generation articles according to any one of claims 1-7, wherein, The method includes: The central portion is formed by enlarging the first composition; and The outer portion is formed to surround the central portion.

10. The method according to claim 9, wherein, The central portion includes: Spraying the first composition into the chamber; and The first composition is enlarged at a temperature of 30°C to 60°C and a wind pressure equal to or less than 1.5 bar.

11. The method according to claim 9, wherein, The external portion includes: Position the central portion formed therein within the room; The central portion is fluidized at a temperature of 50°C to 90°C and at a wind pressure equal to or less than 1.5 bar; and The second composition is sprayed onto the fluidized central portion.

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