KR102790355B1 - Tobacco material comprising flavor material and method of manufacturing the same - Google Patents

Abstract

The present disclosure relates to a tobacco material comprising a flavoring substance and a method for producing the same. The tobacco material has a core-shell structure and can produce a unique flavor.

Description

{TOBACCO MATERIAL COMPRISING FLAVOR MATERIAL AND METHOD OF MANUFACTURING THE SAME}

The present disclosure provides a tobacco material comprising a flavoring substance and a method for producing the same.

In recent years, there has been an increasing demand for alternatives to aerosol-generating articles. For example, there has been an increasing demand for devices that generate aerosols by heating the aerosol-generating material within an aerosol-generating article, rather than by burning the aerosol-generating article (e.g., a cigarette).

The problem that the present disclosure seeks to solve is to provide a tobacco material including a flavoring substance and a method for producing the same.

The technical problems to be achieved by the present disclosure are not limited to the technical problems described above, and other technical problems can be inferred from the following examples.

The present disclosure may provide a tobacco material having a core-shell structure, comprising a core comprising a first tobacco mixture and a shell comprising a second tobacco mixture, wherein the first tobacco mixture comprises first tobacco particles and a first flavouring material, and the second tobacco mixture comprises second tobacco particles.

In addition, the present disclosure can provide a method for producing a tobacco material, comprising a first step of growing a first composition to form a core and a second step of forming a shell surrounding the core.

The means for solving the problem are not limited to those described above, and may include all matters that can be inferred by a person skilled in the art from the entire specification.

The tobacco material according to the embodiment can effectively retain flavor and continuously provide flavor to the user even during the second half of smoking.

In addition, according to the manufacturing method according to the embodiment, a tobacco material can be manufactured through a relatively simple process, and the manufacturing yield can be improved.

The effects of the present disclosure are not limited to those described above, and may include all effects that can be inferred from the composition described below.

FIG. 1 is a drawing illustrating a tobacco material according to one embodiment.
FIG. 2a is a drawing illustrating a tobacco material according to one embodiment.
FIG. 2b is a drawing illustrating a tobacco material according to one embodiment.
FIG. 3a is a drawing illustrating a smoking article according to one embodiment.
FIG. 3b is a drawing illustrating a smoking article according to one embodiment.
FIG. 3c is a drawing illustrating a smoking article according to one embodiment.
FIG. 3D is a drawing illustrating a smoking article according to one embodiment.
Figure 4 is a flow chart of a method for manufacturing a tobacco material according to one embodiment.
FIG. 5a is a diagram illustrating a first step of a method for manufacturing a tobacco material according to one embodiment.
FIG. 5b is a diagram illustrating a second step of a method for manufacturing a tobacco material according to one embodiment.

The terms used in the examples are selected from the most widely used general terms possible while considering the functions in the present disclosure, but they may vary depending on the intention of engineers working in the field, precedents, the emergence of new technologies, etc. In addition, in certain cases, there are terms arbitrarily selected by the applicant, and in this case, the meanings thereof will be described in detail in the description of the relevant invention. Therefore, the terms used in the present disclosure should be defined based on the meanings of the terms and the overall contents of the present disclosure, rather than simply the names of the terms.

Throughout the specification, when a part is said to "include" an element, this does not mean that it excludes other elements, but rather that it may include other elements, unless otherwise specifically stated. In addition, terms such as "... part", "... module", etc. described in the specification mean a unit that processes at least one function or operation, which may be implemented by hardware or software, or a combination of hardware and software.

Throughout the specification, the term "core-shell structure" means a structure in which a core is positioned inside and a shell is positioned outside the core. For example, the core-shell structure may mean a capsule structure in which a core is surrounded by a film.

Throughout the specification, “tobacco material” means any form of material containing constituents derived from the tobacco plant.

Throughout the specification, "tobacco particle" means a particle form of a component derived from a tobacco plant. For example, the tobacco particle may be a tobacco grain or tobacco powder.

Throughout the specification, a "smoking article" means an article used by a user to smoke. The smoking article may be, for example, a combustible cigarette, or may be an aerosol-generating article that is heated without combustion by an aerosol-generating device.

Throughout the specification, "surface roughness" means the roughness of the surface of an object. For example, surface roughness can be expressed as centerline average roughness (Ra) according to KS B 0161.

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 for the purpose of distinguishing one element from another.

Below, with reference to the attached drawings, embodiments of the present disclosure are described in detail so that those skilled in the art can easily practice the present disclosure. However, the present disclosure may be implemented in various different forms and is not limited to the embodiments described herein.

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

FIG. 1 is a drawing illustrating a tobacco material (100) according to one embodiment.

The tobacco material (100) may have a core-shell structure and may include a core (110) including a first tobacco mixture and a shell (120) including a second tobacco mixture. Specifically, the first tobacco mixture may be positioned at the center of the tobacco material (100), and the second tobacco mixture may be positioned at the outside of the tobacco material (100). The first tobacco mixture may be partially or completely surrounded by the second tobacco mixture.

The core (110) may comprise a first tobacco blend. The first tobacco blend may comprise first tobacco particles and a first flavouring material.

The first tobacco particle may be, for example, but is not limited to, tobacco powder having a size of about 0.1 to about 0.3 mm.

The first tobacco particle may comprise various types of tobacco powder. The first tobacco particle may comprise, for example, at least one of tobacco powder of yellow tobacco, Burley tobacco, and traditional tobacco (Hwa-dried tobacco, Yang-dried tobacco, and Eum-dried tobacco).

The first flavoring agent may be a substance that produces a specific flavor. For example, the first flavoring agent may include a plant-based flavoring agent such as cinnamon, sage, herbs, chamomile, bergamot, cinnamon, jasmine, ginger, vanilla, spearmint, peppermint, acacia, coffee, celery, sandalwood, or cocoa.

As another example, the first flavoring agent may include animal-derived flavorings such as musk, ambergris, civet, and castor oil.

As another example, the first flavoring substance may be an alcohol compound, such as menthol, geraniol, linalool, anethole, eugenol, and the like. In addition, the first flavoring substance may be an aldehyde compound, such as vanillin, benzaldehyde, anisaldehyde, and the like. In addition, the first flavoring substance may be an ester compound, such as isoamyl acetate, linalyl acetate, isoamyl propionate, linalyl butyrate, and the like. The first flavoring substance may preferably be menthol.

The first flavoring agent may be included in an amount of about 20 parts by weight or less based on 100 parts by weight of the first tobacco mixture. However, the present disclosure is not particularly limited thereto, and various weights of the first flavoring agent may be included.

The first tobacco mixture may be, for example, a tobacco paste comprising first tobacco particles and a first flavoring material. The first tobacco mixture may have an appropriate viscosity by being formed using a solvent such as water or ethanol. Even after the solvent is removed, the first tobacco mixture may have moisture. The process for producing the first tobacco mixture is described in detail below.

The shell (120) may include a second tobacco mixture. The second tobacco mixture may include second tobacco particles. For the second tobacco particles, the description for the first tobacco particles described above may be applied identically or similarly.

The second tobacco mixture may be, for example, a tobacco paste comprising second tobacco particles. The second tobacco mixture may have an appropriate viscosity by being formed using a solvent such as water or ethanol. Even after the solvent is removed, the second tobacco mixture may have moisture. The process for producing the second tobacco mixture is described in detail below.

In one embodiment, the second tobacco blend may further comprise a second flavouring agent. For the second flavouring agent, the description given above for the first flavouring agent may be applied identically or similarly.

When the second tobacco mixture further includes a second flavoring substance, the tobacco material (100) can generate flavor even on the surface of the shell (120). Accordingly, the tobacco material (100) can generate flavor from before smoking to the early stage of smoking.

The core (110) may have a diameter d1. d1 may be, for example, about 0.1 to about 0.5 mm, but is not necessarily limited thereto. The shell (120) may have a diameter d2. d2 may be, for example, about 0.4 to about 1.2 mm, but is not necessarily limited thereto.

The tobacco material (100) may have a moisture content of about 5.0 to about 8.0 parts by weight. When the tobacco material (100) includes moisture within the aforementioned numerical range, the tobacco material (100) may have improved at least one of hardness, flavor retention, and flavor development properties. When the tobacco material (100) has moisture content of less than about 5.0 parts by weight, the flavor development properties of the tobacco material (100) may be reduced. When the tobacco material (100) has moisture content of more than about 8.0 parts by weight, the tobacco material (100) may have low hardness.

Meanwhile, the core (110) may have a moisture content of about 8.0 to about 15.0 parts by weight. Since the core (110) includes moisture in the aforementioned numerical range, the core (110) may have improved at least one of the characteristics of flavor retention and flavor development. In addition, since the moisture content of the core (110) is higher than the moisture content of the shell (120), the tobacco material (100) may have excellent hardness, flavor retention, and flavor development.

The tobacco material (100) may not include a binder. Generally, in order for the tobacco mixture to be manufactured firmly, the tobacco material (100) may include a binder such as hydroxypropylmethylcellulose (HPMC) or carboxymethylcellulose (CMC). However, according to the present disclosure, the tobacco material (100) may have excellent properties such as durability, hardness, and viscosity even without including the above-described binder.

The tobacco material (100) may have a viscosity of about 5 to about 200 cp. When the tobacco material (100) has a viscosity within the aforementioned numerical range, the tobacco material (100) may have at least one of hardness, flavor retention, and flavor development properties improved. The viscosity of the tobacco material (100) may be adjusted depending on the moisture content.

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%. The "hardness of the tobacco material" is a physical property related to elasticity and resilience, and means the degree of resistance to pressure applied in a vertical direction to the tobacco material (100). The "hardness of the tobacco material" is measured using a hardness measuring device, and is calculated through the following calculation formula.

Hardness (%) = [D-a]*100 / D

(D: diameter of tobacco material, a: distance (mm) that the tobacco material is pressed by a 300 g weight)

The tobacco material (100) may have a density of about 0.60 to about 0.90 g/cc. Preferably, the tobacco material (100) may have a density of about 0.62 to about 0.75 g/cc.

The tobacco material (100) may have a surface roughness (Ra) of about 0.1 to about 10.0. The surface roughness of the tobacco material (100) will be described in detail with reference to FIGS. 2a and 2b below.

The tobacco material (100) can generate a flavor when burned or heated by including a flavoring material in the core (110). As an example, if the shell (120) does not include a flavoring material, the tobacco material (100) may not generate a flavor due to the flavoring material in the early stage of smoking.

As another example, when a first flavoring material is included in the core (110) and a second flavoring material is included in the shell (120), the tobacco material (100) can generate a flavor by the second flavoring material in the early part of smoking, and the tobacco material (100) can generate a flavor by the first flavoring material in the middle and late part of smoking. Accordingly, a smoker can be provided with a flavor that changes over time while smoking.

FIG. 2a is a drawing illustrating a tobacco material (200) according to one embodiment.

Referring to FIG. 2a, the tobacco material (200) includes a core (210) and a shell (220). The core (210) may include a first tobacco mixture, and the shell (220) may include a second tobacco mixture. The descriptions given above in FIG. 1 may be applied identically or similarly to the core (210) and the shell (220).

The tobacco material (200) may have a sphere shape as a whole. Since the core (210) has a sphere shape, the shell (220) formed around the core (210) may also have a sphere shape. The surface of the shell (220) may have a surface roughness (Ra) of, for example, about 0.1 to about 10.0. Since the surface of the shell (220) has a surface roughness within the above-described numerical range, the flavor development property of the tobacco material (200) may be improved, and a somewhat smooth surface may be formed. Therefore, when a plurality of tobacco materials (200) are filled into a smoking article (not shown), the amount of the filled tobacco materials (200) may be increased.

Additionally, by controlling the porosity of the surface of the shell (220), the flavor development of the tobacco material (200) can be controlled.

FIG. 2b is a drawing illustrating a tobacco material (300) according to one embodiment.

Referring to FIG. 2b, the tobacco material (300) includes a core (310) and a shell (320). The core (310) may include a first tobacco mixture, and the shell (320) may include a second tobacco mixture. The descriptions given above in FIG. 1 may be applied identically or similarly to the core (310) and the shell (320).

The tobacco material (300) may be irregularly shaped overall. In the process of manufacturing the tobacco material (300), if the shape of the core (310) is not completely spherical, the shape of the shell (320) growing while surrounding the core (310) may also not be completely spherical. Accordingly, as shown in FIG. 2b, the tobacco material (300) may have an uneven shape. In this case, the surface of the shell (320) may have a surface roughness of about 5.0 to about 10.0. The greater the surface roughness of the surface of the shell (320), the better the flavor development. In addition, if a plurality of tobacco materials (300) are filled into a smoking article (not shown), the plurality of tobacco materials (300) may be stably held in the smoking article by frictional force, and the surface area of the tobacco materials (300) may be increased, thereby increasing the amount of nicotine transferred when heated.

FIG. 3a is a drawing illustrating a smoking article (400) according to one embodiment. The smoking article (400) may be, for example, a combustion cigarette.

Referring to FIG. 3A, a smoking article (400) may include a first portion (410) and a second portion (420). The first portion (410) may be a tobacco rod, and the second portion (420) may be a filter segment.

The first portion (410) may include a plurality of tobacco materials (411). The tobacco materials (411) may be tobacco materials having a core-shell structure as described above. The first portion (410) may be ignited by a user and combusted.

The second portion (420) may be a filter segment. The second portion (420) may include a filter material. For example, the second portion (420) may be a cellulose acetate filter. The second portion (420) may be a cylindrical filter or a hollow filter, but there is no particular limitation on the shape of the second portion (420). The user may smoke while holding the second portion (420) in his/her mouth.

When the first portion (410) is burned, flavors may be generated from multiple tobacco materials (411). For example, when the tobacco material (411) contains menthol in the core, menthol flavor may not be generated in the early part of smoking, but may be generated in the middle and late part of smoking.

As another example, when the tobacco material (411) contains menthol in the core and also contains menthol on the surface of the shell, a menthol flavor may be generated before smoking and in the early part of smoking, and the menthol flavor may be continuously generated in the middle and late part of smoking.

FIG. 3b is a drawing illustrating a smoking article (500) according to one embodiment. The smoking article (500) may be, for example, an article that is heated without being combusted to generate an aerosol.

A smoking article (500) may include 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 along a longitudinal direction.

The first portion (510) may include a tobacco material (511). The tobacco material (511) may be a tobacco material having a core-shell structure as described above. The first portion (510) may further include an aerosol-generating material. The aerosol-generating material may be, for example, applied to a surface of the tobacco material (511). The aerosol-generating material may be, for example, at least one of glycerin, propylene glycol, ethylene glycol, dipropylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, and oleyl alcohol. The first portion (510) may be heated by an aerosol-generating device (not shown).

The second part (520) may be a support member that supports the smoking article (500). As a specific 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.

The third part (530) may be a cooling unit that cools the airflow. As a specific example, the third part (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 air from outside the smoking article (500) may be introduced. The third part (530) may serve to cool the aerosol generated from the first part (510).

The fourth portion (540) may be a filter segment. The fourth portion (540) may include a filter material. For example, the fourth portion (540) may be a cellulose acetate filter. The fourth portion (540) may be a cylindrical filter or a hollow filter, but there is no particular limitation on the shape of the fourth portion (540). The user may smoke while holding the fourth portion (540) in his/her mouth.

FIG. 3c is a drawing illustrating a smoking article (600) according to one embodiment. The smoking article (600) may be, for example, an article that is heated without being combusted to generate an aerosol.

Referring to FIG. 3c, the smoking article (600) may include 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 along the longitudinal direction.

The first portion (610) may be a filter segment. For example, the first portion (610) may be a cellulose acetate filter having a specific shape of hollow space therein. As a specific example, the first portion (610) may be a cellulose acetate filter having a human-shaped hollow space, but is not necessarily limited thereto.

The second portion (620) may include a tobacco material (621). The tobacco material (621) may be a tobacco material having a core-shell structure as described above. The second portion (620) may further include an aerosol-generating material. The aerosol-generating material may be applied to a surface of the tobacco material (621), 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, for example. The second portion (620) may be heated by an aerosol-generating device (not shown).

The third portion (630) may be a cooling unit that cools the airflow. As a specific 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 air from outside the smoking article (600) may be introduced. The third portion (630) may serve to cool the aerosol.

The fourth portion (640) may be a filter segment. The fourth portion (640) may include a filter material. For example, the fourth portion (640) may be a cellulose acetate filter. The fourth portion (640) may be a cylindrical filter or a hollow filter, but there is no particular limitation on the shape of the fourth portion (640). The user may smoke while holding the fourth portion (640) in his/her mouth.

FIG. 3D is a drawing illustrating a smoking article (700) according to one embodiment. The smoking article (700) may be, for example, an article that is heated without being combusted to generate an aerosol.

Referring to FIG. 3d, the smoking article (700) may include 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 along the longitudinal direction.

The first portion (710) may be an aerosol-generating substrate. The aerosol-generating substrate may include, for example, a paper sheet impregnated with an aerosol-generating material. The aerosol-generating material may be, for example, at least one of glycerin, 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 device (not shown).

The second portion (720) may be a nicotine generating substrate. The second portion (720) may include a tobacco material (721). The tobacco material (721) may be a tobacco material having a core-shell structure as described above. In addition, the second portion (720) may include, for example, a paper sheet impregnated with the tobacco material (721) and the aerosol generating material. The second portion (720) may be heated by an aerosol generating device (not shown).

The third portion (730) may be a cooling unit that cools the airflow. As a specific 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 air from outside the smoking article (600) may be introduced. The third portion (730) may serve to cool the aerosol.

The fourth portion (740) may be a filter segment. The fourth portion (740) may include a filter material. For example, the fourth portion (740) may be a cellulose acetate filter. The fourth portion (740) may be a cylindrical filter or a hollow filter, but there is no particular limitation on the shape of the fourth portion (740). The user may smoke while holding the fourth portion (740) in his/her mouth.

Fig. 4 is a flow chart of a method (S100) for manufacturing a tobacco material according to one embodiment. Referring to Fig. 4, the method (S100) for manufacturing a tobacco material may include a first step (S110) and a second step (S120).

The first step (S110) may be a step of growing the first composition to form a core of a tobacco material. The first composition may include tobacco powder, water, and a flavoring material. Specifically, the first composition may include about 0.1 to about 20 volume % of the flavoring material. For example, the first composition may be a tobacco paste containing the flavoring material.

Specifically, in the first step (S110), the first composition can be suspended in the chamber and can be dried with hot air for about 6 hours while supplying water at a temperature of about 60° C. or less.

The second step (S120) may be a step of forming a shell surrounding the core of the tobacco material. The shell may be formed from a second composition. The second composition may include tobacco powder and water. Specifically, the second composition may include about 40 to about 70 volume % of tobacco powder and about 30 to about 60 volume % of water. For example, the second composition may be a tobacco paste.

The tobacco material manufactured through the first step (S110) and the second step (S120) may have a core-shell structure.

The core manufactured in step 1 (S110) may have a moisture content of about 8% to about 15% based on the total weight of the tobacco material. Additionally, the core may have a hardness of about 85% to about 95%.

The shell manufactured in the second step (S120) has the characteristics of relatively low moisture content and high hardness compared to the core. The tobacco material manufactured through the second step (S120) can have a moisture content of about 5% to about 8% based on the total weight. In addition, the shell can have a hardness of about 95% to about 99.9%. Accordingly, the tobacco material can have a hardness of about 95% to about 99.9%.

The first step (S110) and the second step (S120) are described in detail with reference to FIGS. 5a and 5b below.

FIG. 5a is a diagram illustrating a first step (S110) of a method for manufacturing a tobacco material according to one embodiment.

Referring to FIG. 5A, a device for manufacturing a tobacco material may include a storage unit (1100), a supply unit (1200), and a chamber (1300). The storage unit (1100) may store a first composition (A1). The supply unit (1200) may supply the first composition (A1) from the storage unit (1100) to the chamber (1300). The chamber (1300) may be a place where the first composition (A1) is formed into a core of a tobacco material. The chamber (1300) may include an inlet (1310) through which air is introduced from the outside.

The first step (S110) may include a step in which the first composition (A1) is moved from the storage unit (1100) to the supply unit (1200). Accordingly, the first composition (A1) may be introduced from the supply unit (1200) into the chamber (1300).

The first composition (A1) can be grown under conditions of a temperature of about 30° C. or higher to about 60° C. or lower and a wind pressure of about 1.5 bar or lower in the chamber (1300). External air can be introduced from the outside to the inside of the chamber (1300) through the inlet (1310). Accordingly, the first composition (A1) can grow while being entangled with each other, and a core (S) of a tobacco material can be formed.

FIG. 5b is a drawing illustrating a second step (S120) of a method for manufacturing a tobacco material according to one embodiment. As for a device for manufacturing a tobacco material, the contents described above in FIG. 5a may be applied identically or similarly.

Referring to FIG. 5b, in the second step (S120), the core (S) generated in the first step (S110) is positioned in the chamber (1300), and the second composition (A2) can be introduced into the chamber (1300) from the supply unit (1200).

The second composition (A2) can be grown around the core (S) under conditions of a temperature of about 50° C. or higher to about 90° C. or lower and a wind pressure of about 1.5 bar or lower in the chamber (1300). External air can be introduced from the outside to the inside of the chamber (1300) through the inlet (1310). Accordingly, the second composition (A2) can be grown into a shell by being entangled around the core (S). Through the first step (S110) and the second step (S120), a tobacco material having a core-shell structure can be obtained.

The second composition (A2) may contain ethanol, unlike the first composition. By adding ethanol to the second composition (A2), the drying time of the shell may be reduced, and the hardness and roughness of the shell may be adjusted. In addition, by adding ethanol to the second composition (A2), the shell may be sterilized and an odor may be removed.

In one embodiment, in the first step (S110), the first composition (A1) may be grown at a lower temperature than the second composition (A2) in the second step (S120). Since the first composition (A1) includes the first flavoring material, growing it at a lower temperature than the second composition (A2) may be advantageous in improving the flavor retention and flavor expression properties of the tobacco material.

Although not shown in FIG. 5b, the method for manufacturing a tobacco material may further include a third step. The third step may be a step of adding a second flavoring material to the surface of the tobacco material having a core-shell structure formed in the second step. The second flavoring material may be, for example, a material usable as the first flavoring material, and the second flavoring material may be sprayed onto the surface of the shell of the tobacco material.

In one embodiment, when the core-shell structured tobacco material manufactured through the first to third steps is heated or burned, the tobacco material can emit aroma by the second aroma material before smoking and during the early part of smoking, and the tobacco material can emit aroma by the first aroma material during the middle and late part of smoking.

Those skilled in the art related to the present embodiment will understand that the above-described description can be implemented in a modified form without departing from the essential characteristics thereof. Therefore, the disclosed embodiments should be considered from an illustrative rather than a restrictive perspective. The scope of the invention is indicated by the claims, not the above description, and all differences within the scope equivalent thereto should be construed as being included in the invention.

100, 200, 300: Tobacco material 1300: Chamber
110, 210, 310: Core 1310: Inlet
120, 220, 320: Shell A1: First composition
400: Smoking article A2: Second composition
410: Part 1 S: Core
411: Tobacco Substances
420: Part 2
500, 600, 700: Smoking Items
510, 610, 710: Part 1
520, 620, 720: Part 2
530, 630, 730: Part 3
540, 640, 740: Part 4
S100: Method for producing tobacco material
S110: Stage 1
S120: Stage 2
1100: Storage
1200: Supply Department

Claims (13)

It has a core-shell structure,
a core comprising a first tobacco mixture; and
A shell comprising a second tobacco mixture and surrounding the core;
The first tobacco mixture comprises first tobacco particles and a first flavouring substance,
A tobacco material, wherein the second tobacco mixture comprises second tobacco particles, a second flavouring material different from the first flavouring material, and moisture. In paragraph 1,
The above tobacco material is a tobacco material containing 5.0 to 8.0 parts by weight of moisture based on 100 parts by weight of the entire tobacco material. delete In paragraph 1,
A tobacco material, wherein the first tobacco mixture comprises 20 parts by weight or less of the first flavoring material, based on 100 parts by weight of the first tobacco mixture. In paragraph 1,
A tobacco material, wherein the core has a diameter of 0.1 to 0.5 mm and the shell has a diameter of 0.4 to 1.2 mm. In paragraph 1,
The above tobacco material is a tobacco material having a viscosity of 5 to 200 cp. In paragraph 1,
The above tobacco material is a tobacco material having a surface roughness (Ra) of 0.1 to 10.0. A tobacco rod comprising a tobacco material according to claim 1; and
A smoking article comprising a filter segment; A first step of forming a core by growing a first composition comprising tobacco powder, water, and a first flavoring material;
A second step of growing a second composition comprising tobacco powder and water to form a shell surrounding the core; and
A method for producing a tobacco material, comprising: a third step of adding a second flavoring material, different from the first flavoring material, to the surface of the shell; In Article 9,
The above first step is,
A step of introducing the first composition into a chamber;
A step of growing the first composition under conditions of a temperature of 30°C or higher and 60°C or lower, and a wind pressure of 1.5 bar or lower; and
A step of obtaining the core from the first composition grown above;
A method for producing a tobacco material, comprising: In Article 9,
The second step above is,
A step of positioning the core in the chamber and introducing the second composition;
A step of growing the second composition around the core under conditions of a temperature of 50°C or higher and 90°C or lower and a wind pressure of 1.5 bar or lower; and
A step of obtaining a tobacco material having a core-shell structure from the above-mentioned grown core and second composition;
A method for producing a tobacco material, comprising: In Article 9,
A method for producing a tobacco material, wherein the first composition comprises 0.1 to 20 volume % of the first flavouring substance. delete