KR102330282B1 - Aerosols generating article - Google Patents

Abstract

A heated aerosol-generating article is disclosed, comprising a tobacco raw material part and a filter part coupled to at least one end of both ends of the tobacco raw material part, wherein the aerosol-forming substrate of the tobacco raw material part has a particle diameter of 0.7 mm to 1.18 mm. In addition, a non-heating aerosol-generating article is disclosed, comprising a tobacco raw material part and a filter part coupled to at least one end of both ends of the tobacco raw material part, wherein the aerosol-forming substrate of the tobacco raw material part has a particle diameter of 0.2 mm to 0.6 mm.

Description

Aerosol-generating articles {AEROSOLS GENERATING ARTICLE}

The present disclosure provides an aerosol-generating article.

There is a growing demand for alternative methods that overcome the shortcomings of common aerosol-generating articles. For example, there is an increasing demand for methods and devices for generating aerosols as aerosol-forming substrates within aerosol-generating articles are heated rather than by combusting the aerosol-generating articles to generate an aerosol.

The aerosol-forming substrate is produced by mixing and kneading tobacco powder, a binder and water, and then compressing the mixture by applying pressure. The porosity and density of the aerosol-forming substrate vary depending on the particle size of the aerosol-forming substrate. The conventionally produced aerosol-forming substrate has low porosity and high density, so there is a problem that the amount of nicotine transfer is low when heated or unheated at low temperature. have.

In recent years, by changing the physical properties of the aerosol-forming substrate, studies for improving the transfer of nicotine even during low-temperature heating or non-heating are being actively researched.

Laid-open Patent Publication No. 10-2007-0107159

To provide an aerosol-generating article. In particular, by providing an aerosol-generating article comprising an aerosol-forming substrate having a high porosity and a low density, a sufficient amount of nicotine transfer can be generated even when the aerosol-generating article is heated or unheated at a low temperature. The technical problem to be achieved by the present embodiment is not limited to the technical problems as described above, and other technical problems may be inferred from the following embodiments.

As a technical means for achieving the above-described technical problem, the first aspect of the present disclosure is a tobacco raw material unit; and a filter unit coupled to at least one end of both ends of the tobacco raw material part, wherein the aerosol-forming substrate of the tobacco raw material part has a particle diameter of 0.7 mm to 1.18 mm.

In addition, the aerosol-forming substrate may provide a heated aerosol-generating article that is heated at 120 °C to 220 °C.

In addition, the tobacco powder included in the aerosol-forming substrate is surface-treated with a primary binder and then coated with a secondary binder, and the surface treatment using the primary binder applies a Top Spray method, The coating treatment using the tea binder is to apply a rotary spray (Tangential Spray) method, it may provide a heated aerosol-generating article.

In addition, the primary binder includes at least one of hydroxypropyl methylcellulose (HPMC) and gum (GUM), and the secondary binder is at least one of HPMC, GUM, and starch (STARCH). A heated aerosol-generating article may be provided, comprising one.

In addition, the filter unit may provide a heated aerosol-generating article that includes at least one of a tube structure, a cooling structure, and a cellulose acetate filter.

A second aspect of the present disclosure is a tobacco raw material unit; and a filter unit coupled to at least one end of both ends of the tobacco raw material part, wherein the aerosol-forming substrate of the tobacco raw material part has a particle diameter of 0.2 mm to 0.6 mm.

In addition, it is possible to provide a non-heating aerosol-generating article, wherein the pH adjusting agent is applied to the aerosol-forming substrate.

In addition, the tobacco powder included in the aerosol-forming substrate is surface-treated with a primary binder and then coated with a secondary binder, and the surface treatment using the primary binder applies a Top Spray method, The coating treatment using the tea binder may provide a non-heating aerosol-generating article that applies a tangential spray method.

In addition, the primary binder includes at least one of HPMCs and GUMs, and the secondary binder includes at least one of HPMCs, GUMs, and STARCHs. It can provide a non-heating aerosol-generating article. have.

In addition, the filter unit may provide a heated aerosol-generating article comprising at least one of a tube structure and a cellulose acetate filter.

1 schematically shows an aerosol-generating article according to an embodiment;
Fig. 2 is a diagram showing the configuration of an aerosol-generating article of a first type according to an embodiment;
3 is a diagram illustrating the configuration of an aerosol-generating article of a second type according to an embodiment.

Since the present invention can apply various transformations and can have various embodiments, specific embodiments are illustrated in the drawings and described in detail in the detailed description. Effects and features of the present invention, and a method of achieving them, will become apparent with reference to the embodiments described below in detail in conjunction with the drawings. However, the present invention is not limited to the embodiments disclosed below and may be implemented in various forms.

In the following examples, the singular expression includes the plural expression unless the context clearly dictates otherwise.

In the following embodiments, terms such as include or have means that the features or components described in the specification are present, and the possibility of adding one or more other features or components is not excluded in advance.

In the following embodiments, when it is said that a part such as a film, region, or component is on or on another part, it is not only when it is directly on the other part, but also another film, region, component, etc. is interposed therebetween. Including cases where there is

In the drawings, the size of the components may be exaggerated or reduced for convenience of description. For example, since the size and thickness of each component shown in the drawings are arbitrarily indicated for convenience of description, the present invention is not necessarily limited to the illustrated bar.

Hereinafter, with reference to the accompanying drawings, embodiments of the present invention will be described in detail so that those of ordinary skill in the art can easily implement them. However, the present invention may be embodied in various different forms and is not limited to the embodiments described herein.

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

1 schematically shows an aerosol-generating article according to an embodiment;

Referring to FIG. 1 , the aerosol-generating article 1 may include a tobacco raw material unit 10 and a filter unit 11 .

Tobacco raw material unit 10 may include an aerosol-forming substrate and a tobacco wrapper surrounding it. The tobacco raw material part 10 may have a cylindrical shape, and the aerosol-forming substrate generates smoke and/or aerosol from a heated or non-heated aerosol-generating article, and the generated smoke and/or aerosol is passed through the filter part 11 . May be inhaled by smokers.

On the other hand, when the heating temperature of the tobacco raw material part 10 is too low, the amount of nicotine transfer is small and when it is too high, taste characteristics such as burnt taste may decrease. Accordingly, the tobacco raw material unit 10 may be heated at 120 °C to 220 °C, preferably at 170 °C. In the case of pH treatment on the tobacco raw material part 10, it may be preferably heated at 120 °C.

The filter unit 11 may be coupled to at least one end of both ends of the tobacco raw material unit 10 . The filter part 11 and the tobacco raw material part 10 may be connected by a tip paper which wraps the filter part 11 and the tobacco raw material part 10 together. For example, the tip paper may wrap the entire filter unit 11 and a part of the tobacco raw material unit 10 . Meanwhile, the filter unit may be coupled to at least one end of both ends of the tobacco raw material unit 10 .

The aerosol-forming substrate comprises tobacco powder. In one embodiment, the tobacco powder may be tobacco leaf flakes, tobacco stems and/or tobacco fines generated during tobacco processing. Tobacco powder may include ground tobacco leaves, ground reconstituted tobacco, and the like. For example, tobacco powder may include burley species, xanthoma species, oriental species, sphagnum hornwort, bulging stems, and platelets.

The aerosol-forming substrate also includes a binder. By spraying the binder into the tobacco powder, the overall particle size of the aerosol-forming substrate and the porosity of the aerosol-forming substrate can be controlled. For example, the binder may include at least one of hydroxypropyl methylcellulose (HPMC), gum, pullulan, carboxymethyl cellulose, and starch. .

On the other hand, the particle size of the aerosol-forming substrate can be measured by checking the particle size passed through a scanning electron microscope (SEM) analysis or a sieve shaker (sieve shaker). However, the particle size measurement method is not limited thereto.

In one embodiment, the overall particle size of the aerosol-forming substrate can be adjusted to a predetermined size by spraying the primary binder on the tobacco powder. The primary binder may include at least one of hydroxypropyl methylcellulose (HPMC) or gum (GUM) having a high binding force. In addition, the tobacco powder sprayed with the primary binder has a weak hardness and may be broken due to friction due to amorphous and irregular surface properties. The surface properties of the aerosol-forming substrate can be improved by spraying the tobacco powder with the secondary binder to smooth the spherical shape. The secondary binder may include at least one of HPMCs, GUMs, and starches (STARCH).

Meanwhile, the binder may be sprayed onto the tobacco powder in a tangential spray, top spray, or bottom spray method. In one embodiment, the surface treatment using the primary binder applies the Top Spray method and the coating treatment using the secondary binder is to improve the surface properties of the aerosol-forming substrate by applying the tangential spray method. can

In the surface treatment process, the size of the initial granules may be rapidly formed by applying the primary binder in a top spray method, and the porosity in the granules may be increased. Thereafter, in the coating treatment process, the secondary binder is applied in a rotational spraying manner, so that the surface of the granules is thinly coated and a hard spherical shape can be formed.

The aerosol-forming substrate comprises water. Water can improve the integrity of the aerosol-forming substrate.

The aerosol-forming substrate may comprise a pH adjusting agent. In one embodiment, the aerosol-forming substrate of an unheated aerosol-generating article may comprise a pH adjusting agent. For example, the pH adjusting agent may include potassium carbonate, sodium hydrogen carbonate, or a mixture thereof. The pH adjusting agent may adjust the pH of the aerosol-forming substrate to an alkaline side, thereby promoting flavor ingredient release from the aerosol-forming substrate. Therefore, even when the aerosol-generating article is not heated, it is possible to bring about the same taste expression effect as when the aerosol-generating article is heated.

In addition, the tobacco raw material part 10 may contain other additives such as wetting agents, flavoring agents and/or organic acids. For example, the wetting agent may include at least one of glycerin, propylene glycol, ethylene glycol, dipropylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, and oleyl alcohol. The humectant keeps the moisture in the granules at an appropriate level, softens the inherent taste, and enriches the amount of atomization. Also, for example, flavoring agents include licorice, sucrose, fructose syrup, isosweet, cocoa, lavender, cinnamon, cardamom, celery, fenugreek, cascarilla, sandalwood, bergamot, geranium, honey essence, rose. oil, vanilla, lemon oil, orange oil, mint oil, cinnamon, caraway, cognac, jasmine, chamomile, menthol, cinnamon, ylang-ylang, sage, spearmint, ginger, coriander or coffee and the like.

The filter unit 11 may include a filter plug and a cigarette filter wrapper surrounding the filter plug. The filter plug may comprise a fibrous or filamentous acetate tow. The filter plug may consist of a mono filter or multiple filters, and may include an adsorbent containing carbon, activated carbon, or the like. Also, a capsule containing a flavoring substance may be located inside the filter plug.

The aerosol-forming substrate contained in the tobacco raw material portion 10 of the heated or non-heated aerosol-generating article may include tobacco powder, a binder, and water. The aerosol-forming substrate may be in the form of granules composed of tobacco powder and a binder. The unheated aerosol-generating article may further comprise a pH adjusting agent. However, the material included in the aerosol-forming substrate is not limited thereto. On the other hand, the density of the aerosol-forming substrate varies according to the particle size of the aerosol-forming substrate, and the porosity of the aerosol-forming substrate varies according to the porosity of the matrix in the aerosol-forming substrate. The porosity and density properties of the aerosol-forming substrate can determine the amount of nicotine transfer and the taste properties of the aerosol-generating article 1 .

The aerosol-forming substrate produced by mixing and kneading tobacco powder, a binder, and water, and then applying pressure to it, has low porosity and high density. The aerosol-generating article 1 comprising an aerosol-forming substrate with low porosity and high density has low nicotine transfer and low taste properties.

In order to increase the nicotine transfer amount and taste characteristics of the aerosol-generating article 1, the particle size of the aerosol-forming substrate may be adjusted to increase porosity and decrease density. In one embodiment, the particle size of the aerosol-forming substrate may be adjusted by spraying the binder onto the tobacco powder in a rotational spraying manner.

Tables 1 and 2 below control the particle size of the aerosol-forming substrate to be used in heated and non-heated aerosol-generating articles, and are the results of evaluating 'nicotine transfer amount throughout the year' and 'taste characteristics' according to the change in particle size.

Table 1 below shows the results of evaluation of 'nicotine migration amount throughout the year' and 'sweet taste characteristics' measured according to the particle size of an aerosol-forming substrate to be used in a heated aerosol-generating article.

First, Health Canada smoking conditions (particulate form) were applied for evaluation in Table 1 below. An aerosol-forming substrate applied with a fluidized bed process (top spray method and tangential spray method) was used to evaluate the 'year-round nicotine transfer amount' and 'sweet taste characteristics', and the aerosol-forming substrate was heated at 170°C. heated. As can be seen in Table 1 below, the annual nicotine transfer amount and 'sweet taste characteristics' according to the particle size of the aerosol-forming substrate were evaluated in the range of 0.3 to 1.18 mm particle diameter of the aerosol-forming substrate. The amount of nicotine transition throughout the year is the result of measuring the amount of nicotine (μg) generated per 10 puffs (10p).

aerosol-forming substrate particle size
(mm) Year-round nicotine transition (μg/10p) taste characteristics 0.3 to 0.5 13.1 Relatively weak tobacco taste and dusty odor 0.5 to 0.7 16.6 Good taste characteristics 0.7 to 1.18 21.7 Moderate level of tobacco taste and clean taste

As can be seen from Table 1, when the particle diameter of the aerosol-forming substrate was 0.3 to 0.5 mm, the annual nicotine transfer amount was 13.1 μg/10p, and a relatively weak tobacco taste and a dusty odor occurred. In addition, when the particle size of the aerosol-forming substrate was 0.5 to 0.7 mm, the amount of nicotine transfer throughout the year was 16.6 μg/10p, and the taste characteristics were good. In addition, when the particle diameter of the aerosol-forming substrate was 0.7 to 1.18 mm, the nicotine transfer amount throughout the year was 21.7 μg/10 p, and the taste characteristics were good due to the moderate level of tobacco taste and clean taste.

As a result of evaluation of 'nicotine migration amount throughout the year' and 'taste characteristic' measured according to the particle size of the aerosol-forming substrate in heated aerosol-generating articles, when the particle diameter of the aerosol-forming substrate is 0.5 to 1.18 mm, the sensory properties are good compared to the nicotine migration amount did. In addition, it is preferable to set the particle diameter of the aerosol-forming substrate to 0.5 to 1.18 mm even in consideration of process workability. Preferably, the particle diameter of the aerosol-forming substrate may be set to 0.7 to 1.18 mm.

Table 2 below shows the evaluation results of 'nicotine migration amount throughout the year' and 'sweet taste characteristics' measured according to the particle size of the aerosol-forming substrate in a non-heating aerosol-generating article.

First, Health Canada smoking conditions (particulate form) were applied for evaluation in Table 2 below. An aerosol-forming substrate applied with a pH adjuster was used for evaluation of 'nicotine transfer throughout the year' and 'sweet taste characteristics'. As can be seen in Table 2 below, the annual nicotine transfer amount and 'sweet taste characteristics' according to the particle size of the aerosol-forming substrate were evaluated in the range of 0.2 to 1.2 mm particle diameter of the aerosol-forming substrate.

Aerosol-forming substrate particle size (mm) Year-round nicotine transition (μg/10p) taste characteristics 0.2 to 0.6 27.18 Expression of tobacco taste characteristics (good taste characteristics) 0.6 to 1.0 9.26 Low nicotine transition (low taste characteristics) 1.0 to 1.2 6.06 Low nicotine transition (low taste characteristics)

As can be seen from Table 2 above, when the particle diameter of the aerosol-forming substrate is 0.2 to 0.6 mm, the annual nicotine transfer amount is 27.18 μg/10p and the tobacco taste characteristic was expressed, and the taste characteristic was favorable. In addition, when the particle diameter of the aerosol-forming substrate was 0.6 to 1.0 mm, the nicotine migration amount throughout the year was 9.26 μg/10p, and the nicotine migration amount was low and the taste characteristics were low. In addition, when the particle diameter of the aerosol-forming substrate was 1.0 to 1.2 mm, the annual nicotine migration amount was 6.06 μg/10p, and the nicotine migration amount was low and the taste characteristics were low.

As a result of evaluating 'nicotine migration amount throughout the year' and 'taste characteristics' measured according to the particle size of the aerosol-forming substrate in the non-heating aerosol-generating article, when the particle diameter of the aerosol-forming substrate was 0.2 to 0.6 mm, the taste characteristics were good, and the aerosol-forming substrate had good taste characteristics. As the particle size of the forming substrate increased, the taste characteristics were lower.

On the other hand, in the case of using an aerosol-forming substrate to which a pH adjuster is applied in a non-heating aerosol-generating article, the particle diameter of the aerosol-forming substrate may be set to 0.2 to 1.0 mm in consideration of sensory characteristics and process workability compared to the amount of nicotine transfer. Preferably, the particle diameter of the aerosol-forming substrate may be set to 0.2 to 0.6 mm.

2 is a diagram schematically illustrating the configuration of an aerosol-generating article of a first type according to an embodiment.

Referring to FIG. 2 , the aerosol-generating article 2 may include a first filter segment 20 , an aerosol-forming substrate 21 , a second filter segment 22 , and a third filter segment 23 . The aerosol-generating article 2 can be used in heated aerosol-generating devices and non-heated aerosol-generating devices.

On the other hand, the structure of the aerosol-generating article 2 shown in FIG. 2 is only an example, and some components may be omitted. For example, the aerosol-generating article 2 may not include one or more of the first filter segment 20 , the second filter segment 22 , and the third filter segment 23 .

In one embodiment, each of the first filter segment 20 , the aerosol-forming substrate 21 , the second filter segment 22 , and the third filter segment 23 may be wrapped by a separate wrapper. In addition, the aerosol-generating article 2 as a whole is wrapped around the periphery of a wrapper that wraps each of the first filter segment 20 , the aerosol-forming substrate 21 , the second filter segment 22 , and the third filter segment 23 . It can be double wrapped by another wrapper. However, the manner in which the aerosol-generating article 2 and the parts constituting it are packaged by the wrapper is not limited thereto.

The first filter segment 20 may be a cellulose acetate filter. In addition, the first filter segment 20 may be composed of a paper filter and a porous molding. For example, the length of the first filter segment 20 may be 4 to 15 mm, but is not limited thereto. In addition, the first filter segment 20 may be colored and may be flavored. Meanwhile, a capsule containing a flavor material may be positioned inside the first filter segment 20 .

The aerosol-forming substrate 21 may include tobacco powder, a binder, and water.

The tobacco powder contained in the aerosol-forming substrate 21 may be tobacco leaf flakes, tobacco stems, and/or tobacco fines generated during tobacco processing. Tobacco powder may include ground tobacco leaves, ground reconstituted tobacco, and the like. For example, tobacco powder may include burley species, xanthoma species, oriental species, sphagnum hornwort, bulging stems, and platelets.

The aerosol-forming substrate also includes a binder. By spraying the binder into the tobacco powder, it is possible to control the overall particle size of the aerosol-forming substrate and improve the surface properties of the aerosol-forming substrate. For example, the binder may include at least one of hydroxypropyl methylcellulose (HPMC), gum, pullulan, carboxymethyl cellulose, and starch. .

In addition, the aerosol-forming substrate 21 may include a pH adjusting agent. According to one embodiment, when manufacturing granules or plate-shaped sheets of the aerosol-forming substrate 21, a pH adjusting agent may be added to the tobacco raw material. In addition, since the aerosol-forming substrate 21 may include granules composed of a pH adjusting agent, the aerosol-forming substrate 21 may include granules composed of tobacco raw materials and granules composed of a pH adjusting agent. Examples of the pH adjusting agent may be calcium carbonate, sodium hydrogen carbonate, calcium oxide, and the like. The pH adjusting agent may adjust the pH of the aerosol-forming substrate 21 to the alkaline side, thereby promoting the release of flavor components from the aerosol-forming substrate 21 . Therefore, even when the aerosol-generating article 2 is not heated, it is possible to bring about the same taste expression effect as when the aerosol-generating article 2 is heated.

In addition, the aerosol-forming substrate 21 may contain other additive substances such as wetting agents, flavoring agents and/or organic acids. For example, the wetting agent may include at least one of glycerin, propylene glycol, ethylene glycol, dipropylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, and oleyl alcohol. Also, for example, flavoring agents include licorice, sucrose, fructose syrup, isosweet, cocoa, lavender, cinnamon, cardamom, celery, fenugreek, cascarilla, sandalwood, bergamot, geranium, honey essence, rose. oil, vanilla, lemon oil, orange oil, mint oil, cinnamon, caraway, cognac, jasmine, chamomile, menthol, cinnamon, ylang-ylang, sage, spearmint, ginger, coriander or coffee and the like.

The particle diameter of the aerosol-forming substrate 21 may be in the range of 0.2 to 1.2 mm. In order to increase the nicotine transfer amount and taste characteristics of the aerosol-generating article 2 , the particle size of the aerosol-forming substrate 21 may be adjusted to increase porosity and decrease density. In one embodiment, when the aerosol-forming substrate 21 is used in a non-heating aerosol-generating device, preferably, the particle diameter of the aerosol-forming substrate 21 may be in the range of 0.2 to 0.6 mm. In another embodiment, when the aerosol-forming substrate 21 is used in a heated aerosol-generating device, preferably, the particle diameter of the aerosol-forming substrate 21 may range from 0.7 to 1.18 mm. On the other hand, the aerosol-forming substrate 21 may be heated at 120 °C to 220 °C, preferably at 170 °C.

In addition, the aerosol-forming substrate 21 may be flavored. According to one embodiment, when manufacturing granules or platelets of the aerosol-forming substrate 21 , a flavoring material may be added to the tobacco raw material, and according to another embodiment, granules or platelet sheets of the aerosol-forming substrate 21 . A flavoring substance may be added to it. The flavoring substance may be a substance in a liquid state or a solid state. In addition, the flavoring material may be a natural product such as herbal granules, and may be a material such as silica, zeolite, or dextrin containing a flavoring component.

The second filter segment 22 may consist of a filter comprising at least one flavor capsule. For example, the second filter segment 22 may be a cellulose acetate filter into which at least one flavor capsule is inserted. In addition, the second filter segment 22 may be composed of a filter in which a flavoring material is mixed. For example, the second filter segment 22 may consist of a cellulose acetate filter or a reset filter having a hollow therein.

The third filter segment 23 may be composed of a tube filter or a recess filter having a hollow therein, and may include a capsule.

Further, at least one of the first filter segment 20 , the aerosol-forming substrate 21 , the second filter segment 22 , and the third filter segment 23 may be flavored. As the method of the flavoring treatment, it may be a method in which a flavoring treatment is performed when manufacturing a filter, or a method of inserting a thread into the filter.

Meanwhile, the first filter segment 20 , the second filter segment 22 , and the third filter segment 23 are not limited to the cellulose acetate filter, and a filter material such as PLA may be applied.

3 is a diagram schematically illustrating the configuration of a second type aerosol-generating article according to an embodiment.

Referring to FIG. 3 , the aerosol-generating article 3 may include an aerosol-forming substrate 30 , a first filter segment 31 , a cooling structure 32 and a second filter segment 33 . The aerosol-generating article 3 can be used in heated aerosol-generating devices and non-heated aerosol-generating devices.

Meanwhile, the structure of the aerosol-generating article 3 shown in FIG. 3 is only an example, and some components may be omitted or new components may be added. For example, the aerosol-generating article 3 may not include one or more of the first filter segment 31 , the cooling structure 32 and the second filter segment 33 .

In one embodiment, each of the aerosol-forming substrate 30 , the first filter segment 31 , the cooling structure 32 , and the second filter segment 33 may be wrapped by a separate wrapper. Further, the aerosol-generating article 3 as a whole is wrapped around the periphery of a wrapper that wraps each of the aerosol-forming substrate 30 , the first filter segment 31 , the cooling structure 32 and the second filter segment 33 . Can be double wrapped by wrapper. However, the manner in which the aerosol-generating article 3 and the parts constituting it are packaged by the wrapper is not limited thereto.

The aerosol-forming substrate 30 may include tobacco powder, a binder, and water.

The tobacco powder contained in the aerosol-forming substrate 30 may be tobacco leaf flakes, tobacco stems, and/or tobacco fines generated during tobacco processing. Tobacco powder may include ground tobacco leaves, ground reconstituted tobacco, and the like. For example, tobacco powder may include burley species, xanthoma species, oriental species, sphagnum hornwort, bulging stems, and platelets.

The aerosol-forming substrate also includes a binder. By spraying the binder into the tobacco powder, it is possible to control the overall particle size of the aerosol-forming substrate and improve the surface properties of the aerosol-forming substrate. For example, the binder may include at least one of hydroxypropyl methylcellulose (HPMC), gum, pullulan, carboxymethyl cellulose, and starch. .

In addition, the aerosol-forming substrate 30 may include a pH adjusting agent. According to one embodiment, when manufacturing the granular or plate-like sheet of the aerosol-forming substrate 30, a pH adjusting agent may be added to the tobacco raw material. In addition, since the aerosol-forming substrate 30 may include granules composed of a pH adjusting agent, the aerosol-forming substrate 30 may include granules composed of tobacco raw materials and granules composed of a pH adjusting agent. Examples of the pH adjusting agent may be calcium carbonate, sodium hydrogen carbonate, calcium oxide, and the like. The pH adjusting agent may adjust the pH of the aerosol-forming substrate 30 to the alkaline side, and thus may promote release of flavor components from the aerosol-forming substrate 30 . Therefore, even when the aerosol-generating article 3 is unheated, it is possible to bring about the same taste expression effect as when the aerosol-generating article 3 is heated.

In addition, the aerosol-forming substrate 30 may contain other additive substances such as wetting agents, flavoring agents and/or organic acids. For example, the wetting agent may include at least one of glycerin, propylene glycol, ethylene glycol, dipropylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, and oleyl alcohol. Also, for example, flavoring agents include licorice, sucrose, fructose syrup, isosweet, cocoa, lavender, cinnamon, cardamom, celery, fenugreek, cascarilla, sandalwood, bergamot, geranium, honey essence, rose. oil, vanilla, lemon oil, orange oil, mint oil, cinnamon, caraway, cognac, jasmine, chamomile, menthol, cinnamon, ylang-ylang, sage, spearmint, ginger, coriander or coffee and the like.

The particle diameter of the aerosol-forming substrate 30 may be in the range of 0.2 to 1.2 mm. In order to increase the nicotine transfer amount and taste characteristics of the aerosol-generating article 3 , the particle size of the aerosol-forming substrate 30 may be adjusted to increase porosity and decrease density. In one embodiment, when the aerosol-forming substrate 30 is used in a non-heating aerosol-generating device, preferably, the particle diameter of the aerosol-forming substrate 30 may be in the range of 0.2 to 0.6 mm. In another embodiment, when the aerosol-forming substrate 30 is used in a heated aerosol-generating device, preferably, the particle diameter of the aerosol-forming substrate 30 may range from 0.7 to 1.18 mm. On the other hand, the aerosol-forming substrate 30 may be heated at 120 °C to 220 °C, preferably at 170 °C.

In addition, the aerosol-forming substrate 30 may be flavored. According to one embodiment, a flavoring material may be added to the tobacco raw material during the manufacture of granules or plate leaf sheets of the aerosol-forming substrate 30 , and according to another embodiment, granules or plate leaf sheets of the aerosol-forming substrate 30 . A flavoring substance may be added to it. The flavoring substance may be a substance in a liquid state or a solid state. In addition, the flavoring material may be a natural product such as herbal granules, and may be a material such as silica, zeolite, or dextrin containing a flavoring component.

The first filter segment 31 may be a cellulose acetate filter. For example, the first filter segment 31 may be a tube-shaped structure including a hollow therein. The length of the first filter segment 31 may be an appropriate length within the range of 4 mm to 30 mm, but is not limited thereto. Preferably, the length of the first filter segment 31 may be 10 mm, but is not limited thereto.

The diameter of the hollow included in the first filter segment 31 may be an appropriate diameter within the range of 3 mm to 4.5 mm, but is not limited thereto.

When the first filter segment 31 is manufactured, the hardness of the first filter segment 31 can be adjusted by adjusting the content of the plasticizer.

In order to prevent the size of the first filter segment 31 from being reduced over time, the outer edge of the first filter segment 31 may be manufactured to be wrapped by a wrapper. Accordingly, the first filter segment 31 can be easily combined with other components (eg, other filter segments).

In addition, the first filter segment 31 may be manufactured by inserting a structure such as a film or a tube made of the same or different material inside (eg, hollow).

The first filter segment 31 may be manufactured using cellulose acetate. Accordingly, when the heater is inserted, the inner material of the aerosol-forming substrate 30 may be prevented from being pushed back, and the cooling effect of the aerosol may be generated.

The cooling structure 32 cools the aerosol generated by the heater heating the aerosol-forming substrate 30 . Thus, the user can inhale the aerosol cooled to a suitable temperature.

The length or diameter of the cooling structure 32 may be variously determined depending on the shape of the aerosol-generating article 3 . For example, the length of the cooling structure 32 may be appropriately employed within the range of 7 mm to 30 mm. Preferably, the length of the cooling structure 32 may be about 14 mm, but is not limited thereto.

The cooling structure 32 may be made of pure polylactic acid or by combining polylactic acid with other degradable polymers. For example, the cooling structure 32 may be manufactured through an extrusion method or a fiber weaving method. The cooling structure 32 may be manufactured in various shapes to increase the surface area per unit area (ie, the surface area in contact with the aerosol).

For example, the cooling structure 32 may be fabricated by weaving fibers made of polylactic acid. In this case, a flavoring solution may be applied to the fibers made of polylactic acid. Alternatively, the cooling structure 32 may be manufactured by using a separate fiber coated with a flavoring solution and a fiber made of polylactic acid together. In addition, the polylactic acid fiber may be dyed in a predetermined color, and the cooling structure 32 may be manufactured using the dyed fiber.

The second filter segment 33 may also be a cellulose acetate filter. For example, the second filter segment 33 may be made of a recess filter, but is not limited thereto. The length of the second filter segment 33 may be appropriately employed within the range of 4 mm to 30 mm. For example, the length of the second filter segment 33 may be about 12 mm, but is not limited thereto.

In the process of manufacturing the second filter segment 33 , the flavor may be generated by spraying a flavoring liquid on the second filter segment 33 . Alternatively, a separate fiber to which the flavoring liquid is applied may be inserted into the second filter segment 33 . The aerosol generated by the aerosol-forming substrate 30 is cooled as it passes through the cooling structure 32 , and the cooled aerosol is delivered to the user through the second filter segment 33 . Accordingly, when the flavoring element is added to the second filter segment 33 , the effect of enhancing the durability of the flavor delivered to the user may occur.

In addition, at least one capsule (not shown) may be included in the second filter segment 33 . Here, the capsule (not shown) may have a structure in which the liquid containing the fragrance is wrapped with a film. For example, the capsule (not shown) may have a spherical or cylindrical shape.

Those of ordinary skill in the art related to the present embodiment will understand that it can be implemented in a modified form within a range that does not deviate from the essential characteristics of the above description. Therefore, the disclosed methods are to be considered in an illustrative rather than a restrictive sense. The scope of the present invention is indicated in the claims rather than the foregoing description, and all differences within the scope equivalent thereto should be construed as being included in the present invention.

Claims (10)

Tobacco Raw Material Department; and
Includes; a filter unit coupled to at least one end of the both ends of the tobacco raw material unit;
The aerosol-forming substrate of the tobacco raw material has a particle diameter of 0.7mm to 1.18mm,
Tobacco powder included in the aerosol-forming substrate is surface-treated with a primary binder and then coated with a secondary binder, and the surface treatment using the primary binder applies a Top Spray method, and the secondary binder The coating treatment using a rotary spray (Tangential Spray) will apply the method, a heated aerosol-generating article. The method of claim 1,
wherein the aerosol-forming substrate is heated at 120°C to 220°C. delete The method of claim 1,
The primary binder includes at least one of hydroxypropyl methylcellulose (HPMC) and gum (GUM), and the secondary binder includes at least one of HPMC, GUM, and starch (STARCH). A heated aerosol-generating article comprising: The method of claim 1,
wherein the filter unit comprises at least one of a tube structure, a cooling structure and a Cellulose Acetate filter. Tobacco Raw Material Department; and
Includes; a filter unit coupled to at least one end of the both ends of the tobacco raw material unit;
The aerosol-forming substrate of the tobacco raw material has a particle diameter of 0.2mm to 0.6mm,
Tobacco powder included in the aerosol-forming substrate is surface-treated with a primary binder and then coated with a secondary binder, and the surface treatment using the primary binder applies a Top Spray method, and the secondary binder The coating treatment using a rotary spray (Tangential Spray) will apply a method, non-heating aerosol-generating article. 7. The method of claim 6,
An unheated aerosol-generating article, wherein a pH adjusting agent is applied to the aerosol-forming substrate. delete 7. The method of claim 6,
The primary binder comprises at least one of HPMCs and GUMs, and the secondary binder comprises at least one of HPMCs, GUMs, and STARCHs. 7. The method of claim 6,
Wherein the filter unit comprises at least one of a tube structure and a Cellulose Acetate filter.

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