Tobacco material containing flavoring substances and method for producing same - Patents.com

Abstract

One embodiment of the present disclosure provides a tobacco material that includes a core containing a flavoring material and an outer layer containing a tobacco mixture, the outer layer being formed over and surrounding the core.

Description

[Technical field]

[0001] The present invention relates to a tobacco material containing a flavoring material and a method for making the same. [Background technology]

[0002] Recently, there has been an increasing demand for alternatives to traditional cigarettes, such as devices that generate aerosols by heating an aerosol-generating material within an aerosol-generating article (e.g., a cigarette) without combustion. Summary of the Invention [Problem to be solved by the invention]

[0003] In order to improve the tobacco taste provided through the aerosol-generating article, a flavoring substance may be added to the aerosol-generating article, but if the flavoring substance is highly volatile, a large amount of the flavoring substance is evaporated at the beginning of smoking, and the flavoring substance is not provided uniformly throughout the entire smoking session.

[0004] The problem that the present disclosure seeks to solve is to provide a tobacco substance that includes a flavoring material, and a method for making the same.

[0005] The technical problem that the present disclosure aims to solve is not limited to the technical problem described above, and other technical problems can be inferred from the following examples. [Means for solving the problem]

[0006] In one embodiment, the tobacco material includes a core containing a flavorant and an outer layer containing a tobacco mixture, the outer layer also being formed to encase the core.

[0007] In one embodiment, the method of making a tobacco material also includes growing a first composition to form a core, and forming an outer layer over the core.

[0008] The means for solving the problem are not limited to the above, and the entire specification includes any matter that can be inferred by a person of ordinary skill in the art. Effect of the Invention

[0009] According to various embodiments of the present disclosure, the tobacco material can effectively retain flavor and provide the flavor uniformly throughout the user's smoking experience.

[0010] Various embodiments of the present disclosure may improve the efficiency of a process for producing tobacco material, thereby increasing production yields.

[0011] The effects of the present disclosure are not limited to those described above, but also include any effects that can be inferred from the configurations described below. [Brief description of the drawings]

[0012] [Figure 1] FIG. 1 illustrates a tobacco material according to one embodiment. [Figure 2A] FIG. 13 illustrates a tobacco material according to another embodiment. [Figure 2B] FIG. 13 illustrates a tobacco material according to another embodiment. [Figure 3A] 1 is a diagram illustrating a smoking article according to one embodiment. [Figure 3B] 13A and 13B are diagrams illustrating smoking articles according to other embodiments. [Figure 3C] 13A and 13B are diagrams illustrating smoking articles according to other embodiments. [Figure 3D] 13A and 13B are diagrams illustrating smoking articles according to other embodiments. [Figure 4] 1 is a flow chart of a method for producing a tobacco material according to one embodiment. [Figure 5A] FIG. 2 is a diagram illustrating a first step of a method for producing tobacco material according to one embodiment. [Figure 5B] FIG. 2 is a diagram illustrating a first step of a method for producing tobacco material according to one embodiment. [Figure 5C] 1 illustrates a second stage of a method for producing tobacco material according to one embodiment. [Figure 5D] 1 illustrates a second stage of a method for producing tobacco material according to one embodiment. [Figure 5E] 1 illustrates a second stage of a method for producing tobacco material according to one embodiment. [Figure 6] FIG. 2 illustrates a graph of menthol expression levels of tobacco materials in a puff series according to one embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] The terms used in this embodiment are currently widely used and common terms as much as possible, taking into consideration the functions in this disclosure, but they may vary depending on the intentions of the engineers in this field, precedents, or the emergence of new technologies. In addition, in certain cases, the applicant may arbitrarily select terms, and in such cases, the meanings of the terms will be described in detail in the relevant description of the invention. Therefore, the terms used in this disclosure must be defined based on the meanings of the terms and the overall content of this disclosure, rather than simply the names of the terms.

[0014] Throughout the specification, when a part "includes" a certain element, it does not mean excluding other elements, but also means including other elements, unless otherwise specified to the contrary. Furthermore, terms such as "... unit" and "... module" described in the specification mean a unit that processes at least one function or operation, which may be realized by hardware or software, or a combination of hardware and software.

[0015] Throughout the specification, "tobacco material" may refer to any form of material that contains components derived from the tobacco plant.

[0016] Throughout the specification, "tobacco particles" can mean particles of material derived from the tobacco plant. For example, tobacco particles can be tobacco particles or tobacco powder.

[0017] Throughout the specification, "smoking article" can mean an article used by a user to inhale smoke, for example, a combustion cigarette or an aerosol-producing article that is heated, without being burned, by an aerosol-generating device.

[0018] Throughout the specification, "surface roughness (Ra: roughness average)" may refer to the degree of roughness of an object surface. For example, the surface roughness may be expressed by the centerline average roughness (Ra) according to the KS B 0161 standard.

[0019] As used herein, terms including ordinal numbers, such as "first" or "second," may be used to describe various elements, but the elements are not limited by the terms. The terms are used to distinguish one element from another.

[0020] As used herein, phrases such as "at least one of" preceding a list of elements modify the entire list of elements and not the individual elements of the list. For example, phrases such as "at least one of a, b, and c" should be understood to include a alone, b alone, c alone; a and b, a and c, b and c, or a, b, and c.

[0021] In the following, with reference to the accompanying drawings, the embodiments of the present disclosure will be described in detail so that those skilled in the art can easily carry out the present disclosure. However, the present disclosure may be embodied in various different forms and is not limited to the embodiments described herein.

[0022] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings.

[0023] FIG. 1 is a diagram illustrating tobacco material according to one embodiment.

[0024] 1, the tobacco material 100 also includes a central portion 110 that includes a flavoring material, and an outer layer 120 that includes a tobacco mixture. Specifically, the tobacco material 100 is formed to have a core-shell structure, with the outer layer 120 surrounding the central portion 110. The tobacco material 100 may have a generally sphere shape.

[0025] In one embodiment, the core 110 also includes a flavoring. Specifically, the core 110 also includes a highly volatile flavoring. For example, the flavoring may include menthol. The core 110 is also formed via at least one of a menthol solution and menthol crystals.

[0026] However, the flavoring material is not limited to menthol, and may be changed in various ways depending on the design of the manufacturer.

[0027] For example, the flavoring substances may include botanical flavors such as cinnamon, sage, herbs, chamomile, hay, sweet tea, lavender, bergamot, lemon, orange, cinnamon, jasmine, ginger, vanilla, spearmint, peppermint, acacia, coffee, celery, sandalwood, and cocoa.

[0028] Flavoring substances may also include animal flavors such as mosquito, ambergris, civet, and castoreum.

[0029] The flavoring substances may be alcohol compounds such as geraniol, linalool, anethole, eugenol, etc. The flavoring substances may be aldehyde compounds such as vanillin, benzaldehyde, anisaldehyde, etc. The flavoring substances may be ester compounds such as isoamyl acetate, linalyl acetate, isoamyl propionate, linalyl butyrate, etc.

[0030] In one embodiment, the core 110 also includes flavorants and tobacco particles. The tobacco particles may include various types of tobacco powder. For example, the tobacco particles may include at least one of flue-cured, burley, flue-cured, sun-cured, and air-cured tobacco powder.

[0031] In one embodiment, when the core 110 includes a flavoring material and tobacco particles, the flavoring material may be layered onto the seeds formed from the tobacco particles. For example, if the tobacco particles are formed into tobacco particle seeds of a certain size through a series of processes, a menthol solution may be layered onto the formed tobacco particle seeds and then dried.

[0032] In one embodiment, the flavoring material of the center portion 110 is at least 95 parts by weight (wt%) based on 100 parts by weight of the center portion, so that the flavoring material provided during the user's smoking time can be uniformly transferred. However, the weight ratio of the flavoring material is not limited thereto and can be variously changed according to the design of the manufacturer.

[0033] In one embodiment, the core 110 is formed via a tobacco dough that includes flavorings. For example, the core 110 is formed via a dough that includes flavorings, tobacco particles, and a solvent (e.g., water (H2O)). The viscosity of the core 110 depends on the amount of solvent in the dough. After the solvent is removed, the core 110 still has a substantially adequate moisture content. The process by which the core 110 is manufactured will be described below with reference to Figures 5A to 5E.

[0034] In one embodiment, the outer layer 120 also includes a tobacco blend, the tobacco blend including tobacco particles that include various types of tobacco powder, for example, the tobacco particles including at least one of flue-cured, burley, flue-cured, sun-cured, and air-cured tobacco powder.

[0035] In one embodiment, the outer layer 120 is also formed through a tobacco knead containing tobacco particles. For example, the outer layer 120 is also formed through a knead containing tobacco particles and a solvent. The viscosity of the outer layer 120 also depends on the amount of solvent in the knead. After that, even if the solvent is removed, the outer layer 120 also has a substantial moisture content. A specific process for manufacturing the outer layer 120 will be described later with reference to Figures 5A to 5E.

[0036] In one embodiment, the central portion 110 may have a diameter D1. For example, D1 may be about 0.01 to about 0.3 mm. Specifically, D1 may be about 0.01 to about 0.15 mm. However, the diameter of the central portion 110 is not limited thereto. In one embodiment, the outer layer portion 120 may have a diameter D2. For example, D2 may be about 0.5 to about 1.99 mm. Specifically, D2 may be about 0.65 to about 1.99 mm. However, the diameter of the outer layer portion 120 is not limited thereto.

[0037] In one embodiment, the amount and timing of flavorant release from the tobacco material 100 also vary depending on the diameter of the outer layer 120. For example, if the diameter of the outer layer 120 is greater than or equal to about 2 mm, the flavorant release may be delayed, resulting in a non-uniform amount of flavorant released during smoking. If the diameter of the outer layer 120 is less than about 0.5 mm, the flavorant release may be accelerated, resulting in a non-uniform release of the flavorant during smoking. If the diameter of the outer layer 120 is between about 0.5 and 1.99 mm, the release of flavorant from the center 110 may begin at a substantially appropriate time such that the flavorant may be released uniformly.

[0038] In one embodiment, the tobacco material 100 may have a moisture content of about 5.0 to about 8.0 parts by weight. By having the tobacco material 100 contain moisture in the above-mentioned range, the tobacco material 100 may have improved at least one of hardness, flavor retention, and flavor release. If the tobacco material 100 has a moisture content of less than about 5.0 parts by weight, the flavor release of the tobacco material 100 may be reduced. On the other hand, if the tobacco material 100 has a moisture content of more than about 8.0 parts by weight, the tobacco material 100 may have low hardness.

[0039] The center portion 110 may have a moisture content of about 8.0 to about 15.0 parts by weight. When the center portion 110 contains moisture within the above-mentioned range, at least one of the characteristics of aroma retention and aroma release may be improved. Furthermore, since the moisture content of the center portion 110 is higher than the moisture content of the outer layer portion 120, the tobacco material 100 has excellent hardness, aroma retention, and aroma release.

[0040] In one embodiment, the tobacco material 100 may have a viscosity of about 5 to about 200 cp. By having the tobacco material 100 have a viscosity in the above numerical range, the tobacco material 100 may have at least one of excellent hardness, aroma retention, and aroma development. The viscosity of the tobacco material 100 may also be adjusted by the moisture content.

[0041] In one embodiment, the tobacco material 100 may have a hardness of about 90% or more. Specifically, the tobacco material 100 may have a hardness of about 95% to about 99.9%. "Hardness of a tobacco material" is a physical property related to elasticity and resilience, and may refer to the degree to which the tobacco material 100 resists pressure applied in a vertical direction. "Hardness of a tobacco material" is measured using a hardness meter and calculated according to the following formula:

[0042] (Number 1) Hardness (%)=[Da]*100 / D

[0043] (D: diameter of tobacco material, a: distance (mm) that tobacco material is pushed by 300g weight)

[0044] In one embodiment, the tobacco material 100 may have a density of about 0.60 to about 0.90 g / cc. Specifically, the tobacco material 100 may have a density of about 0.62 to about 0.75 g / cc. In one embodiment, the central portion 110 of the tobacco material 100 may have a density of about 0.50 to about 0.70 g / cc.

[0045] In one embodiment, the tobacco material 100 may have a surface roughness (Ra) of about 0.1 to about 10.0. More specific details regarding the surface roughness of the tobacco material 100 are discussed below with reference to Figures 2A-2B.

[0046] FIG. 2A is a diagram illustrating a tobacco material according to another embodiment.

[0047] 2A, the tobacco material 200 also includes a central portion 210 including a flavoring material, and an outer layer portion 220 including a tobacco mixture. Specifically, the tobacco material 200 is also formed such that the outer layer portion 220 surrounds the central portion 210. The central portion 210 and the outer layer portion 220 have been described above with reference to FIG. 1, and therefore the same content may be omitted.

[0048] In one embodiment, the tobacco material 200 may have a generally spherical shape. In one embodiment, when the central portion 210 of the tobacco material 200 has a spherical shape, the outer layer 220 formed to encase the central portion 210 may also have a spherical shape.

[0049] In one embodiment, the outer layer 220 of the tobacco material 200 may have a preset surface roughness (Ra (roughness average)).

[0050] For example, the outer layer 220 may have a surface roughness of about 0.1 to 5.0, which forms a substantially smooth surface. When the outer layer 220 has a substantially smooth surface, the amount of tobacco material 200 that is also included in the smoking article (not shown) may be increased. Also, by adjusting the surface porosity of the outer layer 220, the flavor development of the tobacco material 200 may be adjusted.

[0051] As another example, the outer layer 220 may have a surface roughness of about 5.0 to 10.0. When the outer layer 220 has a surface roughness in the above-mentioned numerical range, a substantially rough surface may be formed. The greater the surface roughness of the surface of the outer layer 220, the more improved the aroma expression may be. When a plurality of tobacco substances 200 including an outer layer 220 having a substantially rough surface are included in a smoking article (not shown), the plurality of tobacco substances 200 may be stably held in the smoking article due to increased frictional force, the surface area of ​​the tobacco substances 200 may be increased, and the amount of nicotine released when heated may be increased.

[0052] FIG. 2B is a diagram illustrating a tobacco material according to another embodiment.

[0053] 2B, the tobacco material 300 also includes a central portion 310 including a flavoring material, and an outer layer portion 320 including a tobacco mixture. Specifically, the tobacco material 300 is also formed such that the outer layer portion 320 surrounds the central portion 310. The central portion 310 and the outer layer portion 320 have been described above with reference to FIG. 1, and therefore the same content may be omitted.

[0054] In one embodiment, the tobacco material 300 may have a distorted spherical shape. For example, if the central portion 310 is not substantially spherical during the manufacturing process of the tobacco material 300, the outer layer 320 that grows around the central portion 310 may also not be substantially spherical. As a result, the tobacco material 300 may have an irregular shape, as shown in FIG. 2B.

[0055] For example, the outer layer 320 may have a surface roughness of about 0.1 to 5.0. When the outer layer 320 has a surface roughness in the above-mentioned numerical range, a substantially smooth surface may be formed. When the outer layer 320 has a substantially smooth surface, the amount of tobacco material 300 contained in the smoking article (not shown) may be increased. In addition, the flavor development of the tobacco material 300 may be adjusted by adjusting the porosity of the surface of the outer layer 320.

[0056] As another example, the outer layer 320 may have a surface roughness of about 5.0 to 10.0. When the outer layer 320 has a surface roughness in the above-mentioned numerical range, a substantially rough surface may be formed. The greater the surface roughness of the surface of the outer layer 320, the more improved the flavor expression may be. When a smoking article (not shown) contains a plurality of tobacco substances 300 including an outer layer 320 having a substantially rough surface, the plurality of tobacco substances 300 may be stably held in the smoking article due to increased frictional force, and the surface area of ​​the tobacco substances 300 may be increased, resulting in an increased amount of nicotine transfer when heated.

[0057] FIG. 3A is a diagram illustrating a smoking article according to one embodiment.

[0058] 3A, the smoking article 400 includes a first portion 410 and a second portion 420. The first portion 410 is a tobacco rod, and the second portion 420 is a filter segment. For example, the smoking article 400 is a combustible cigarette.

[0059] In one embodiment, first portion 410 also includes a plurality of tobacco material 411. Tobacco material 411 may be the tobacco material of Figures 1-2B. In one embodiment, first portion 410 may be lit and combusted by a user.

[0060] In one embodiment, the second portion 420 is a filter segment containing a filter material. For example, the second portion 420 is a cellulose acetate (CA) filter. The second portion 420 can be a cylindrical filter or a hollow filter, but there is no particular limit to the shape of the second portion 420. A user can inhale while holding the second portion 420 in his / her mouth.

[0061] In one embodiment, when first portion 410 is burned, flavor may be generated from the plurality of tobacco substances 411. For example, if menthol is included as a flavoring substance in the center of tobacco substance 411, the menthol flavor may be expressed after the initial smoking phase has passed.

[0062] FIG. 3B is a diagram illustrating a smoking article according to another embodiment.

[0063] 3B, the smoking article 500 also includes a first portion 510, a second portion 520, a third portion 530, and a fourth portion 540. The first portion 510, the second portion 520, the third portion 530, and the fourth portion 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.

[0064] In one embodiment, first portion 510 also includes a plurality of tobacco material pieces 511. Tobacco material 511 may be the tobacco material of FIGS. 1-2B. In one embodiment, first portion 510 further includes an aerosol generating material. The aerosol generating material may be applied to a surface of tobacco material 511. For example, the aerosol generating material may be at least one of glycerin, propylene glycol, ethylene glycol, dipropylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, and oleyl alcohol. In one embodiment, first portion 510 is also heated by an aerosol generating device (not shown).

[0065] In one embodiment, the second part 520 also serves as a support for supporting the smoking article 500. For example, the second part 520 may be a hollow filter. The second part 520 may serve to connect and support the first part 510 and the third part 530 to each other.

[0066] In one embodiment, the third portion 530 is also a cooling portion that cools the airflow (i.e., aerosol). For example, the third portion 530 is a hollow tube or a paper tube. The hollow tube or the paper tube includes a ventilation area (not shown) through which external air can flow into the smoking article 500. The third portion 530 can play a role in cooling the aerosol generated in the first portion 510.

[0067] In one embodiment, the fourth portion 540 is a filter segment containing a filter material. For example, the fourth portion 540 is a cellulose acetate (CA) filter. The fourth portion 540 may be a cylindrical filter or a hollow filter, but there is no particular limit to the shape of the fourth portion 540. A user can inhale while holding the fourth portion 540 in his / her mouth.

[0068] FIG. 3C is a diagram illustrating a smoking article according to another embodiment.

[0069] 3C, the smoking article 600 also includes a first portion 610, a second portion 620, a third portion 630, and a fourth portion 640. The first portion 610, the second portion 620, the third portion 630, and the fourth portion 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.

[0070] In one embodiment, the first portion 610 is also a filter segment. For example, the first portion 610 is also a cellulose acetate (CA) filter having a specific shape of hollow inside. Specifically, the first portion 610 is also a cellulose acetate filter having a "human"-shaped hollow, but is not limited thereto.

[0071] In one embodiment, second portion 620 also includes tobacco material 621. Tobacco material 621 may be the tobacco material of Figures 1-2B. In one embodiment, second portion 620 further includes an aerosol generating material. For example, the aerosol generating material may be at least one of glycerin, propylene glycol, ethylene glycol, dipropylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, and oleyl alcohol. Second portion 620 is also heated by an aerosol generating device (not shown).

[0072] In one embodiment, the third portion 630 is also a cooling portion that cools the airflow (i.e., the aerosol). For example, the third portion 630 is a hollow tube or a paper tube. The hollow tube or the paper tube includes a ventilation area (not shown) through which external air can flow into the smoking article 600. The third portion 630 can play a role in cooling the aerosol.

[0073] In one embodiment, the fourth portion 640 is a filter segment containing a filter material. For example, the fourth portion 640 is a cellulose acetate (CA) filter. The fourth portion 640 can be a cylindrical filter or a hollow filter, but there is no particular limit to the shape of the fourth portion 640. A user can inhale while holding the fourth portion 640 in his / her mouth.

[0074] FIG. 3D is a diagram illustrating a smoking article according to another embodiment.

[0075] 3D, the smoking article 700 also includes a first portion 710, a second portion 720, a third portion 730, and a fourth portion 740. The first portion 710, the second portion 720, the third portion 730, and the fourth portion 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.

[0076] In one embodiment, the first portion 710 is also an aerosol-generating substrate. For example, the aerosol-generating substrate may include a paper sheet impregnated with an aerosol-generating substance. The aerosol-generating substance may be at least one of glycerin, propylene glycol, ethylene glycol, dipropylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, and oleyl alcohol. The first portion 710 is also heated by an aerosol generating device (not shown).

[0077] In one embodiment, second portion 720 is also a nicotine-producing substrate. In one embodiment, second portion 720 also includes tobacco material 721. Tobacco material 721 may be the tobacco material of Figures 1-2B. In one embodiment, second portion 720 also includes tobacco material 721 and a paper sheet impregnated with an aerosol generating material. Second portion 720 is also heated by an aerosol generating device (not shown).

[0078] In one embodiment, the third portion 730 is also a cooling portion for cooling the airflow (i.e., the aerosol). For example, the third portion 730 is a hollow tube or a paper tube. The hollow tube or the paper tube also includes a ventilation area (not shown) through which outside air can flow into the smoking article 700.

[0079] In one embodiment, the fourth portion 740 is a filter segment containing a filter material. For example, the fourth portion 740 is a cellulose acetate (CA) filter. The fourth portion 740 may be a cylindrical filter or a hollow filter, but there is no particular limit to the shape of the fourth portion 740. A user can inhale while holding the fourth portion 740 in his / her mouth.

[0080] FIG. 4 is a flow chart of a method for producing a tobacco material according to one embodiment.

[0081] Referring to FIG. 4, the method for producing a tobacco material (S100) also includes a first step (S110) and a second step (S120).

[0082] According to one embodiment, the first step (S110) is also a step of growing a first composition to form a tobacco material core. In one embodiment, the first composition also includes flavoring material and water. Specifically, the first composition also includes about 95-99 parts by weight of flavoring material and about 1-5 parts by weight of water. In another embodiment, the first composition also includes flavoring material, tobacco powder, and water. Specifically, the first composition also includes about 95-99 parts by weight of flavoring material, about 0.14-0.71 parts by weight of tobacco powder, and about 0.86-4.29 parts by weight of water. For example, the first composition also includes about 6 times more water than tobacco powder.

[0083] In one embodiment, the first composition in the first step (S110) can be suspended in a chamber, supplied with water at a temperature of about 60° C. or less, and dried with hot air for about 6 hours.

[0084] According to one embodiment, the second step (S120) also includes forming an outer layer around the formed core using a second composition. In one embodiment, the second composition includes tobacco powder and a solvent. The solvent includes water and an ethyl alcohol solution. Specifically, the second composition includes about 14 to 15 parts by weight of tobacco powder, about 51 to 52 parts by weight of water, and about 34 to 35 parts by weight of ethanol.

[0085] In one embodiment, the center produced in the first step (S110) may have a moisture content of about 8% to about 15% of the total weight of the tobacco material, and may have a hardness of about 85% to about 95%.

[0086] In one embodiment, the outer layer portion produced in the second step (S120) is characterized by a relatively low moisture content and high hardness compared to the center portion. The moisture content of the tobacco material produced through the second step (S120) is about 5% to about 8% of the total weight of the tobacco material. The outer layer portion may have a hardness of about 95% to about 99.9%. Thus, the tobacco material may have a hardness of about 95% to about 99.9%.

[0087] The first step (S110) and the second step (S120) will be described in detail below with reference to Figures 5A to 5E. In particular, the first step (S110) will be described with reference to Figures 5A to 5C, and the second step (S120) will be described with reference to Figures 5D and 5E.

[0088] 5A and 5B illustrate a first stage of a method for producing tobacco material according to one embodiment.

[0089] 5A, the tobacco material manufacturing apparatus includes a chamber 900, a first storage unit 910, a second storage unit 920, and a supply unit 930. In one embodiment, the first storage unit 910 can store a first composition, and the second storage unit 920 can store a second composition. For example, the first storage unit 910 can include a first composition including a flavoring substance and water. The second storage unit 920 can include a second composition including tobacco powder and a solvent. In another example, the first storage unit 910 can include a first composition including a flavoring substance, tobacco powder, and water.

[0090] In one embodiment, the first storage unit 910 and the second storage unit 920 may be connected to the supply unit 930 via a first valve 915 and a second valve 925, respectively. For example, when the first valve 915 is in an open state, the first composition stored in the first storage unit 910 may be supplied to the chamber 900 via the supply unit 930. Meanwhile, the second valve 925 is also maintained in a closed state. In another example, when the second valve 925 is in an open state, the second composition stored in the second storage unit 920 may be supplied to the chamber 900 via the supply unit 930. Meanwhile, the first valve 915 is also maintained in a closed state.

[0091] In one embodiment, the first step (e.g., first step (S110) (FIG. 4)) may include supplying the first composition 940 from the first storage unit 910 to the chamber 900 via the supply unit 930. For example, the first composition 940 may be sprayed into the chamber 900.

[0092] 5B, the first step (S110) also includes a step of growing the first composition 940 sprayed in the chamber 900 under certain conditions. For example, the certain conditions under which the first composition 940 can grow may mean a temperature range of about 30° C. to about 60° C. and a wind pressure of about 1.5 bar or less.

[0093] In one embodiment, the first composition 940 may grow into a first size seed 960 under certain conditions. For example, when the first composition 940 is supplied to the chamber 900 while external air 950 under certain conditions is introduced from the outside, the first composition 940 may grow into a first size seed 960. Then, over time, the first size seed 960 may grow into a second size seed 962, and the second size seed 962 may grow into a third size seed 964.

[0094] 5C-5E illustrate a second stage of a method for producing tobacco material according to one embodiment.

[0095] Referring to FIG. 5C, the second step (e.g., second step (S120) (FIG. 4)) may include positioning the center portion 970 formed in the first step (S110) in the chamber 900. For example, the center portion 970 formed in the first step (S110) may represent a first composition grown into a seed having a predetermined size. In this case, the predetermined size may represent the diameter of the center portion (e.g., diameter D1 (FIG. 1)), which may vary depending on the manufacturer's design.

[0096] In one embodiment, the central portion 970 formed in the first step (S110) may be accumulated in the lower portion of the chamber 900. At this time, the central portion 970 may have a certain moisture content between the multiple central portions 970 such that they do not stick to each other. For example, the central portion 970 may be grown under a temperature range of about 30° C. to about 60° C. and a wind pressure of about 1.5 bar or less. Thereafter, the central portion 970 is dried to have the aforementioned certain moisture content, and then accumulated in the lower portion of the chamber 900.

[0097] 5D, the second step (S120) also includes fluidizing the center portion 970 located in the chamber 900. In one embodiment, the center portion 970 may be fluidized by external air 950 being introduced into the chamber 900 from the outside under certain conditions. For example, the certain conditions for fluidizing the center portion 970 may be a temperature range of about 50° C. to about 90° C. and a wind pressure of about 1.5 bar or less.

[0098] In one embodiment, the second step (S120) also includes supplying the second composition 980 from the second storage portion 920 through the supply portion 930 into the chamber 900. For example, the second composition 980 is also sprayed into the chamber 900.

[0099] In one embodiment, the second composition 980 provided from the second storage unit 920 may grow while surrounding the central portion 970. For example, the central portion 970 may move to the upper portion of the chamber 900 due to the external air 950, and the second composition 980 provided from the second storage unit 920 may move to the lower portion of the chamber 900, causing friction between the central portion 970 and the second composition 980. Based on the frictional force, the second composition 980 may grow while surrounding the periphery of the central portion 970.

[0100] 5E, the second step (S120) may include accumulating a final tobacco material 990 formed by growing the second composition 980 around the central portion 970 in the chamber 900. For example, the final tobacco material 990 formed in the second step (S120) may refer to a material grown into granules having a predetermined size. In this case, the predetermined size may refer to the diameter of the tobacco material (e.g., about 0.8 to 2.0 mm), which may vary depending on the manufacturer's design.

[0101] In one embodiment, the first composition in the first step (S110) may be grown at a lower temperature than the second composition in the second step (S120), since the first composition contains a flavoring material, growing the first composition at a lower temperature than the second composition may improve the flavor retention and flavor development of the tobacco material.

[0102] FIG. 6 illustrates a graph of menthol expression levels for tobacco materials in a puff series according to one embodiment.

[0103] 6, the graph corresponding to Comparative Example 600 shows the amount of menthol expressed in the puff series when menthol is contained in the medium in a conventional form. In one embodiment, the graph corresponding to Example 610 shows the amount of menthol expressed in the puff series when menthol is contained in the medium and / or filter in the form of a tobacco material according to the present disclosure.

[0104] According to Comparative Example 600, it can be seen that the amount of menthol expressed is the highest in the early smoking stage (e.g., 3-5 times) corresponding to the beginning of smoking, and the amount of menthol expressed is the lowest in the later smoking stage (e.g., 10-14 times). In other words, as smoking progresses, the amount of menthol expressed decreases rapidly, so that the user can hardly feel the flavor of menthol in the latter half of smoking.

[0105] It can be seen that in the early smoking stage, the amount of menthol expressed by Example 610 is less than that of Comparative Example 600. However, it can be seen that in the later smoking stage, the amount of menthol expressed by Example 610 is greater than that of Comparative Example 600. That is, according to Example 610, the amount of menthol expressed as smoking progresses increases substantially gradually, so that the user can uniformly feel the flavor of menthol throughout the entire smoking time.

[0106] It will be understood by those skilled in the art that the present invention may be embodied in modified forms without departing from the essential characteristics of the above description. Therefore, the disclosed embodiments should be considered from an explanatory perspective, not a limiting one. The scope of the present invention is defined by the claims, not the above description, and all differences within the scope of the claims should be interpreted as being included in the present invention.

Claims

1. In tobacco substances, a central portion containing a flavoring substance; an outer layer including a tobacco mixture and surrounding the core; The tobacco material, wherein said core portion has a diameter of 0.01 to 0.15 mm and said outer layer portion has a diameter of 0.5 to 1.99 mm.

2. 10. The tobacco substance of claim 1, wherein the core further comprises tobacco particles and the flavoring material comprises menthol.

3. 2. The tobacco material of claim 1, wherein the tobacco material comprises 5.0 to 8.0 parts by weight of moisture per 100 parts by weight of the tobacco material.

4. 2. The tobacco material of claim 1, wherein said center portion comprises at least about 95 parts by weight of said flavoring material per 100 parts by weight of said center portion.

5. 10. The tobacco material of claim 1, wherein the tobacco material has a viscosity of from 5 to 200 cp.

6. 2. The tobacco material of claim 1, wherein the tobacco material has a surface roughness (Ra) of 0.1 to 10.

0.

7. The tobacco material of claim 1 , wherein the tobacco material has a spherical shape.

8. A tobacco rod comprising the tobacco material of claim 1; and a filter segment.

9. 1. A method for producing a tobacco material, comprising: growing a first composition to form a core; forming an outer layer over the core; A method of producing a tobacco material, wherein said core portion has a diameter of 0.01 to 0.15 mm and said outer layer portion has a diameter of 0.5 to 1.99 mm.

10. The step of forming the core portion comprises: spraying the first composition into a chamber; and growing the sprayed first composition at a temperature between 30° C. and 60° C. and at a wind pressure of 1.5 bar or less.

11. The step of forming the outer layer portion includes: placing the formed core within a chamber; Fluidizing the center portion at a temperature of 50° C. to 90° C. and an air pressure of 1.5 bar or less; and spraying the fluidized center with a second composition.

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