KR20220028408A - Filter with improved flavor persistence and smoking article including the same - Google Patents

Abstract

A filter with improved flavor persistence and a smoking article including the same are provided. The filter according to some embodiments of the present disclosure comprises a filter plug which includes a filter material and a solid flavor bead which is positioned within the filter plug. The solid flavor bead can significantly improve flavor persistence of the filter by preventing a flavor substance from being rapidly consumed at the beginning of smoking, and allowing the flavor substance to be slowly consumed during smoking.

Description

FILTER WITH IMPROVED FLAVOR PERSISTENCE AND SMOKING ARTICLE INCLUDING THE SAME

The present disclosure relates to a filter having improved fragrance persistence and a smoking article comprising the same. More particularly, it relates to a filter capable of improving smoking satisfaction of a smoker by ensuring continuous flavor expression during smoking, and a smoking article including the same.

In order to satisfy smokers' preferences, smoking articles (e.g. cigarettes) are subjected to flavoring treatment in various ways. An example of a typical flavoring treatment method is a method of directly spraying a fragrance solution into a smoking material (e.g. leaf tobacco cut filler) or a filter plug. However, the exemplified methods have problems in that there is a limitation in the amount of fragrance added, the intended fragrance is not expressed, or the fragrance expression is sharply reduced during smoking.

Specifically, in the method of adding the hyangaek to the smoking material, it is difficult to add a large amount of the hyangaek because the smoking material and the hyangaek may coagulate with each other. In addition, an unintended fragrance may be expressed as the hyangaek deteriorates due to a high heating temperature (or combustion temperature) during smoking.

Next, the method of adding hyangaek to the filter plug may add a large amount of hyangaek compared to the above-described method, but this also has a limit in the amount of addition. Cellulose acetate fiber, which is a typical filter material constituting the filter plug, does not typically have a pore structure, so it cannot accommodate a large amount of perfume. In addition, cellulose acetate fibers do not well suppress the volatilization of the perfume penetrating into the pores due to their structural characteristics, and as a result, most of the perfume liquid is released in the early stage of smoking, and the flavor development may decrease rapidly toward the latter part of smoking.

In addition, there may be a problem in that the fragrance liquid is lost during the flavoring process or product storage due to the volatility of the flavor material in any way.

Recently, there has been proposed a flavoring treatment method in which a fragrance liquid is placed in a burstable capsule and added to a filter. The proposed method can prevent the loss of fragrance that occurs during product storage by using a capsule with high fragrance retention. However, when the capsule ruptures, the stored fragrance liquid is rapidly released. It cannot solve the problem of decreasing fragrance expression.

A technical problem to be solved through some embodiments of the present disclosure is to provide a filter with improved scent persistence and a smoking article including the same.

Another technical problem to be solved through some embodiments of the present disclosure is to provide a flavor article and a method of manufacturing the same that can ensure the effect of improving the fragrance lasting.

The technical problems of the present disclosure are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the description below.

In order to solve the above technical problem, a filter according to some embodiments of the present disclosure is a filter for a smoking article, comprising a filter plug including a filter material and solid flavor beads located in the filter plug. can

In some embodiments, the diameter of the flavor beads may be between 2.5 mm and 5.0 mm.

In some embodiments, the diameter of the flavor beads may be 30% to 80% of the diameter of the filter plug.

In some embodiments, the flavor beads may include a menthol material.

In some embodiments, the hardness of the flavor beads measured according to KSM-1802 may be 70% or more.

In some embodiments, the flavor beads are prepared by processing a flavor composition through a dry process, and the flavor composition may include a polysaccharide material, a flavor material, and a binder.

In some embodiments, the average flavor transfer amount according to the puff of the filter may be 0.5 mg/puff or more.

In some embodiments, the standard deviation of the flavor transfer amount according to the puff of the filter may be 0.5 mg/puff or less.

In order to solve the above technical problem, a smoking article according to some embodiments of the present disclosure may include a smoking material part and a filter part located downstream of the smoking material part and to which solid flavor beads are added.

According to some embodiments of the present disclosure described above, solid flavor beads may be included in the filter plug. Unlike the case where flavor substances (eg, volatile flavor substances) are added in liquid form, solid flavor beads do not volatilize and the flavor substances are gradually transferred during smoking, so that the flavor development can be maintained uniformly until the second half of smoking. there is.

In addition, as the flavor material is added in a solid state, the amount of the flavor material added may be increased. Accordingly, the overall flavor expression of the filter may be improved.

In addition, by manufacturing flavor beads through a tableting process, high-quality flavor beads can be easily manufactured at high speed.

In addition, by designing the flavor beads to have appropriate hardness and diameter, appropriate resistance to suction and flavor development can be ensured.

Effects according to the technical spirit of the present disclosure are not limited to the above-mentioned effects, and other effects not mentioned will be clearly understood by those skilled in the art from the following description.

1 to 3 are exemplary diagrams schematically illustrating a filter with improved fragrance persistence according to some embodiments of the present disclosure.
4 and 5 are exemplary views schematically illustrating a filter with improved fragrance expression according to some embodiments of the present disclosure.
6 is an exemplary flowchart schematically illustrating a method of manufacturing flavor beads according to some embodiments of the present disclosure.
7 is an exemplary diagram schematically illustrating a smoking article with improved scent persistence according to some embodiments of the present disclosure.
8-10 illustrate various types of smoking devices to which smoking articles according to some embodiments of the present disclosure may be applied.

Hereinafter, preferred embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. Advantages and features of the present disclosure, and methods of achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the technical spirit of the present disclosure is not limited to the following embodiments, but may be implemented in various different forms, and only the following embodiments complete the technical spirit of the present disclosure, and in the technical field to which the present disclosure belongs It is provided to fully inform those of ordinary skill in the art of the scope of the present disclosure, and the technical spirit of the present disclosure is only defined by the scope of the claims.

In adding reference numerals to the components of each drawing, it should be noted that the same components are given the same reference numerals as much as possible even though they are indicated on different drawings. In addition, in describing the present disclosure, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the present disclosure, the detailed description thereof will be omitted.

Unless otherwise defined, all terms (including technical and scientific terms) used herein may be used with the meaning commonly understood by those of ordinary skill in the art to which this disclosure belongs. In addition, terms defined in a commonly used dictionary are not to be interpreted ideally or excessively unless clearly specifically defined. The terminology used herein is for the purpose of describing the embodiments and is not intended to limit the present disclosure. In this specification, the singular also includes the plural unless specifically stated otherwise in the phrase.

In addition, in describing the components of the present disclosure, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are only for distinguishing the component from other components, and the essence, order, or order of the component is not limited by the term. When it is described that a component is “connected”, “coupled” or “connected” to another component, the component may be directly connected or connected to the other component, but another component is between each component. It should be understood that elements may be “connected,” “coupled,” or “connected.”

As used herein, “comprises” and/or “comprising” refers to a referenced component, step, operation and/or element of one or more other components, steps, operations and/or elements. The presence or addition is not excluded.

First, some terms used in various embodiments of the present disclosure will be clarified.

In the examples below, a "smoking article" means any product capable of smoking, whether based on tobacco, tobacco derivatives, expanded tobacco, reconstituted tobacco or tobacco substitutes. or any product capable of providing a smoking experience. For example, smoking articles may include smokeable products such as cigarettes, cigars, and cigarillos. As another example, smoking articles may include combustible smoking articles and heated smoking articles.

In the following embodiments, a “smoking material” may mean a material that generates smoke and/or aerosol or is used for smoking. For example, the smoking material may comprise tobacco material. Tobacco material may include, for example, tobacco leaf pieces, tobacco stems or materials processed therefrom, and the like. As a more specific example, the tobacco material may include pulverized tobacco leaves, pulverized reconstituted tobacco, expanded cut filler, expanded stems and leaflets, and the like. However, the present invention is not limited thereto.

In the following examples, "upstream" or "upstream direction" means a direction away from the smoker's bend, and "downstream" or "downstream direction" means a direction approaching from the smoker's bend. can do. The terms upstream and downstream may be used to describe the relative positions of elements constituting the smoking article. For example, in the smoking article 100 illustrated in FIG. 7 , the filter unit 120 is located downstream or downstream of the smoking material unit 110 , and the smoking material unit 110 is upstream of the filter unit 120 . or located in the upstream direction.

In the following embodiments, “longitudinal direction” may mean a direction corresponding to the longitudinal axis of the smoking article.

In the following embodiments, "puff" refers to inhalation of the user, and inhalation may refer to a situation in which the user's mouth or nose is drawn into the user's mouth, nasal cavity, or lungs. .

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

1 is an exemplary diagram schematically illustrating a filter 1 having improved fragrance persistence according to some embodiments of the present disclosure.

A filter 1 according to embodiments may function as a filter of a combustion smoking article or a heated smoking article, and as shown in FIG. 1 , a filter plug 10 and a filter wrapper wrapping the same, as shown in FIG. 1 . (11; eg plug wrap). However, only the components related to the embodiment of the present disclosure are illustrated in FIG. 1 . Accordingly, those of ordinary skill in the art to which the present disclosure pertains can see that other general-purpose components other than those shown in FIG. 1 may be further included. Hereinafter, each component of the filter 1 will be described.

The filter plug 10 may comprise a filter material with a filtering function for fumes and/or aerosols. The filter material may include, but is not limited to, for example, cellulose acetate fibers, cellulosic material (e.g. paper), and the like. In addition, the filter material may further comprise at least one filter material well known in the art. For example, the filter material may further comprise an adsorbent comprising carbon, activated carbon, and the like.

As shown, the solid flavor beads 20 may be located in the filter plug 10 . For example, the flavor beads 20 may be introduced into the filler plug 10 during the manufacturing process of the filter 1 . Here, the solid flavor beads 20 may refer to flavor articles in which flavor substances exist in a solid state. For example, the flavor beads 20 may be manufactured in the form of a tablet through a dry process (eg, a tableting process) of a flavor material such as menthol. However, the scope of the present disclosure is not limited thereto. An example of a method for manufacturing the flavor beads 20 will be briefly described later with reference to FIG. 6 .

Solid flavor beads 20 can provide a variety of advantages, including:

First, in terms of fragrance persistence, since the flavor beads 20 exist in a solid state in the filter plug 10 during smoking, there is no problem of rapid migration of flavor substances at the beginning of smoking. For example, when a volatile flavor substance such as menthol is added in liquid form (eg, when perfume is sprayed on a filter material or exists as a liquid in a capsule), most of the flavor substance is transferred at the beginning of smoking, and the There is no choice but to sharply decrease the flavor. However, when the flavor material is processed into a solid bead and added, the flavor development can be maintained uniformly throughout smoking because the flavor material is gradually transferred as smoke and/or aerosol passes through the flavor beads 20 during smoking. there is. In this regard, reference will be made to Experimental Examples 1 and 2 further.

Next, in terms of flavor development, when the flavor material is added in the form of solid beads, the amount of the flavor material can be easily increased, thereby improving the overall flavor development of the filter 1 . For example, when the flavoring substance is injected into the filter plug in a liquid form, more than a certain amount of the flavoring liquid cannot be added due to the liquid capacity of the filter plug. This is because, when the liquid capacity is exceeded, the added perfume may flow out of the filter plug and contaminate the wrapper. However, when the flavor material is added in the form of solid beads, it is not affected by the liquid capacity of the filter plug, and thus the amount of the flavor material can be easily increased. In this regard, reference will be made to Experimental Examples 1 and 2 further.

Next, in terms of flavor dissipation, since the solid flavor beads 20 do not volatilize, the flavor substance content in the filter plug 10 can be maintained regardless of the storage period. On the other hand, when the flavor material is added in a liquid form, the flavor development property of the filter is inevitably deteriorated over time because the flavor material is volatilized during the process or during product storage.

On the other hand, the number, arrangement position, hardness, size (eg diameter), shape, composition component / ratio, addition amount, etc. of the flavor beads 20 may be variously designed or manufactured, and the specific specifications thereof may vary depending on the embodiment. there is.

In some embodiments, as illustrated in FIG. 1 , the number of flavor beads 20 is one, and the flavor beads 20 may be located near the center of the cylinder of the filter plug 10 . In this case, the smoke and/or aerosol may be in precise contact with the flavor beads 20 to enhance the flavor development. However, the scope of the present disclosure is not limited thereto, and the number of flavor beads 20 may be two or more.

For reference, it may be preferable to add a small number of flavor beads 20 of a certain size or larger than adding a large number of fine-sized flavor beads 20 in terms of fragrance expression and fragrance durability. This is because the flavor beads 20 of a certain size or larger have a large contact area with smoke and/or aerosol, so that flavor material transfers well, and the contact area is maintained until the latter half of smoking, so that continuous flavor development can be ensured. .

Also, in some embodiments, flavor beads 20 may be formed in a spherical shape as illustrated in FIG. 1 . In this case, since the contact area between the smoke and/or aerosol and the flavor beads 20 can be maximized during smoking, the flavor development of the flavor beads 20 can be further improved. However, the scope of the present disclosure is not limited to the form illustrated in FIG. 1 , and the flavor beads 20 may be designed or manufactured in other forms.

Also, in some embodiments, the hardness of flavor beads 20 may be greater than or equal to about 70%. Preferably, the hardness may be greater than or equal to about 80%, about 85%, about 90%, or about 93%. More preferably, the hardness may be about 85% to 99%, about 90% to 98%, about 90% to 97%, or about 93% to 97%. Within this numerical range, appropriate resistance to suction and flavor development can be ensured (see Experimental Example 3). For example, if the hardness of the flavor beads 20 is too small, the flavor beads 20 may be crushed during the process (e.g. the flavor bead 20 input process) and fine powder may be generated in the filter plug 10 . Conversely, if the hardness of the flavor beads 20 is too large, the flavor material may not migrate well or the suction resistance of the filter 1 may be increased. For reference, the hardness of the flavor beads 20 may be measured based on KSM-1802, which is a Korean national standard activated carbon test method.

Also, in some embodiments, the diameter of the flavor beads 20 may be between about 1.5 mm and 6.0 mm. Preferably, the diameter is about 2.0 mm to 5.0 mm, about 2.5 mm to 4.5 mm, 2.5 mm to 4.0 mm, about 2.5 mm to 3.5 mm, about 3.0 mm to 4.5 mm, about 3.0 mm to 4.0 mm or about 3.0 mm to 3.5 mm. Within this numerical range, fragrance development, fragrance persistence, and an appropriate level of resistance to suction can be guaranteed, and advantages in the process (e.g. reduction in defect rate/difficulty level, speed of the process) can also be secured. For example, when the diameter of the flavor beads 20 is too small, the flavor material may not be sufficiently included in the flavor beads 20 to deteriorate the flavor development, or the flavor material may move rapidly in the beginning to reduce the flavor durability. In addition, the difficulty of the flavor bead 20 manufacturing process is rapidly increased, and the defect rate and manufacturing cost may increase. Conversely, when the diameter of the flavor beads 20 is too large, the flavor beads 20 block the airflow path, thereby increasing the suction resistance may occur. In this regard, reference is made to Experimental Example 3 further.

Also, in some embodiments, the diameter of the flavor beads 20 may be about 20% to 88% of the diameter of the filter plug 10 . Preferably, the diameter is about 20% to 80%, about 20% to 75%, about 25% to 70%, about 30% to 70%, 35% to 65%, about the diameter of the filter plug 10 . 40% to 60%, or about 45% to 55%. For example, when the diameter of the filter plug 10 is about 7.7 mm, the diameter of the flavor beads 20 may be about 2.0 mm to 4.0 mm. As another example, when the diameter of the filter plug 10 is about 7 mm, the diameter of the flavor beads 20 may be about 1.8 mm to about 3.8 mm. Within this numerical range, fragrance development, fragrance persistence, and an appropriate level of resistance to suction can be guaranteed (see Experimental Example 3), and process advantages (eg, reduced defect rate/difficulty reduction, process speed) can also be secured. .

Also, in some embodiments, the added amount of the flavor beads 20 may be about 15 mg to 50 mg, preferably about 20 mg to 45 mg, about 25 mg to 40 mg, or about 30 mg to 35 mg. Within this numerical range, fragrance development, fragrance persistence, and appropriate resistance to suction can be ensured.

Further, in some embodiments, the diameter of the flavor beads 20 is about 2.5 mm to 4.0 mm, and the amount added may be about 20 mg to 45 mg, about 25 mg to 40 mg, or about 30 mg to 35 mg. Within this numerical range, fragrance development, fragrance persistence, and appropriate resistance to suction can be ensured.

Also, in some embodiments, flavor beads 20 may be prepared by processing a flavor composition comprising a polysaccharide material, a flavor material, and a binder. Here, the polysaccharide material may be, for example, a crystalline cellulose material, but is not limited thereto. In addition, the flavoring material may include various substances capable of imparting flavor to the smoke and/or aerosol, such as menthol.

Also, in some embodiments, the flavor composition may consist of about 20% to 80% by weight polysaccharide material, about 5% to 70% by weight flavor material, and about 10% to 70% by weight binder. . However, the scope of the present disclosure is not limited thereto.

Also, in some embodiments, the content of the flavor material included in the flavor beads 20 may be about 7 mg or more. Preferably, the content may be about 10 mg, about 12 mg, about 14 mg, or about 16 mg or more. Within this numerical range, the fragrance development and fragrance persistence of the filter 1 may be improved together.

Next, the filter wrapper 11 may refer to a wrapping material that wraps at least a portion of the filter plug 10 . The filter wrapper 11 may be made of a porous or non-porous wrapping material. The filter wrapper 11 may be made of, for example, a paper material, but the scope of the present disclosure is not limited thereto.

In some embodiments, a flavor article (not shown, hereinafter "flavor sheet") processed into a sheet form may be disposed inside the filter wrapper 11 . The flavor sheet (not shown) may be disposed in various ways, such as wrapping at least a portion of the filter plug 10 or attaching to a specific region of the filter wrapper 11 . The flavor sheet (not shown) is prepared by mixing LM-pectin with flavor substances and thickening polysaccharides (eg carrageenan, agar, gellan gum, etc.) It can be prepared through a process of standing to cool at ℃ ~ 40 ℃) and a process of heating and drying the cooled raw material slurry at a predetermined temperature (eg 70 ℃ ~ 100 ℃). Here, LM-pectin can lower the viscosity of the raw material slurry because it does not gel when cooled, and can improve the safety and manufacturing convenience of the flavor sheet by enabling the raw material slurry to be prepared without adding an emulsifier. However, the manufacturing method of the flavor sheet is not limited to these examples. According to this embodiment, by disposing the flavor sheet in the filter 1, the flavor expression of the filter 1 can be further improved.

Meanwhile, FIG. 1 illustrates that the filter 1 has a single filter structure as an example. However, this is only for convenience of understanding, and the filter 1 may have a multi-filter structure or may have a different structure.

For example, as shown in FIG. 2 , the filter 1 may have a multi-filter structure including a first filter segment 12 and a second filter segment 13 . Although FIG. 2 illustrates that the filter 1 is composed of two filter segments 12 and 13 as an example, the number of filter segments may be three or more. In this case, the flavor beads 20 may be located in at least one of the first filter segment 12 and the second filter segment 13 .

As another example, as shown in FIG. 3 , the filter 1 may include a plurality of filter segments 14 , 15 and a cavity formed by them, wherein the flavor beads 20 are disposed in the cavity. may be located.

So far, the filter 1 with improved fragrance persistence according to some embodiments of the present disclosure has been described with reference to FIGS. 1 to 3 . As described above, the flavor material may be processed into a solid bead form and included in the filter plug 10 . Unlike the case where the flavor material is added in a liquid form, the solid flavor beads 20 gradually migrate during smoking, so that the flavor development can be maintained uniformly until the latter half of smoking. Furthermore, since the input amount of the flavor substance can be easily increased, the overall flavor expression of the filter 1 can also be improved.

Hereinafter, with reference to FIGS. 4 and 5 , the filter 2 with improved fragrance expression according to some embodiments of the present disclosure will be described.

4 and 5 are exemplary cross-sectional views schematically illustrating a filter 2 with improved fragrance expression according to some embodiments of the present disclosure. In particular, FIGS. 4 and 5 show that the filter 2 has a double filter structure as an example, and the direction of the arrow in FIGS. 4 and 5 indicates the movement path of smoke (eg mainstream smoke) and/or aerosol, The thickness of the arrow indicates the amount of movement of smoke and/or aerosol.

As shown in FIG. 4 , the filter 2 may include a first filter segment 22 , a second filter segment 23 , and a filter wrapper 21 surrounding the filter segments 22 and 23 . In addition, flavor beads 20 may be positioned within the second filter segment 23 . However, in some other embodiments, the flavor beads 20 may be located in the first filter segment 22 . In this case, the first filter segment 22 has a structure similar to that of the second filter segment 23 . can be done

Detailed specifications such as diameters and lengths of the first filter segment 22 and the second filter segment 23 may be designed in various ways. For example, the length of the first filter segment 22 may be about 12 mm and the length of the second filter segment 23 may be about 15 mm. However, the present invention is not limited thereto.

The second filter segment 23 may include a core portion 232 and an outer portion 231 , and may be designed to generate a difference in suction resistance between the core portion 232 and the outer portion 231 . More specifically, the core portion 232 may be designed (manufactured) to have a lower suction resistance than that of the outer portion 231 . In this case, the movement of mainstream smoke is concentrated toward the core portion 232 during smoking, so that the flavor development of the flavor beads 20 may be further improved. For example, the transfer amount of flavor substances may be increased due to concentration of mainstream smoke, and flavor development may be further improved.

The difference in suction resistance between the outer part 231 and the core part 232 may be about 15 mmWG or more, and preferably about 20 mmWG, 30 mmWG, or 40 mmWG or more. Within this numerical range, a mainstream smoke concentration effect can be ensured and adequate suckability can also be provided. However, the scope of the present disclosure is not limited thereto.

A method of achieving the difference in suction resistance between the outer portion 231 and the core portion 232 may be varied, and the specific method may vary according to an embodiment.

As an example, a difference in suction resistance may be achieved through a difference in denier of the fiber material (e.g. difference in monodenier, difference in total denier). As a specific example, the difference in suction resistance may be achieved by configuring the outer portion 231 with a fiber material of low denier (monodenier) and forming the core portion 232 with a fiber material of high denier (monodenier). In general, the smaller the monodenier, the thinner the fiber, and the filter made of a thin fiber material has a high suction resistance as well as an excellent removal ability. Therefore, by adjusting the monodenier of the fiber material, the difference in suction resistance can also be adjusted.

In the above example, the monodenier difference between the fiber material included in the core part 232 and the fiber material included in the outer part 231 may preferably be about 0.9 (dpf) or more, more preferably about 1, It can be 3 or 5 or more. In addition, the monodenier of the fiber material included in the core part 232 is preferably about 5 or 5.9 or more, and more preferably about 7, 8, or 9 or more. For example, the monodenier of the fiber material included in the core portion 232 may be about 5 to 30, about 5.5 to 27, about 5.9 to 25, or about 7 to 21. In addition, the monodenier of the fiber material included in the outer portion 231 is preferably about 8, 7, or 6 or less, and more preferably, about 5 or 4 or less. For example, the monodenier of the fiber material included in the outer portion 231 may be about 3 to 8, about 3.5 to 7.5, about 4 to 7, or about 5 to 6. Within this numerical range, a difference in suction resistance between the outer part 231 and the core part 232 is guaranteed, and an appropriate removal ability may also be secured.

In addition, the total denier difference between the fiber material included in the core part 232 and the fiber material included in the outer part 231 may be preferably about 5,000 or more, and more preferably about 7,000, 10,000, or 15,000 or more. can In addition, the total denier of the fiber material included in the core part 232 is preferably about 27,000 or 25,000 or less, and more preferably, about 22,000, 18,000, or 16,000 or less. For example, the total denier of the fiber material included in the core part 232 may be about 13,000 to 27,000, about 14,000 to 26,000, about 15,000 to 25,000, or about 17,000 to 22,000. In addition, the total denier of the fiber material included in the outer part 231 is preferably about 20,000, 23,000, 25,000, or 27,000 or more, and more preferably, about 28,000, 32,000, or 38,000 or more. For example, the total denier of the fiber material included in the outer portion 231 may be about 23,000 to 40,000, about 24,000 to 38,000, about 25,000 to 35,000, or about 26,000 to 32,000. Within this numerical range, a difference in suction resistance between the outer part 231 and the core part 232 is guaranteed, and an appropriate removal ability may also be secured.

As another example, a difference in suction resistance may be achieved from a difference in the shape of the cross-section of the fiber material. Specifically, by configuring the outer portion 231 with a fiber material having an X or Y cross-sectional shape and forming the core portion 232 from a fiber material having a circular cross-sectional shape, a difference in suction resistance can be achieved. This is because, in general, the X or Y cross-sectional shape tends to increase the suction resistance compared to the circular shape.

As another example, a difference in suction resistance can be achieved from a difference in arrangement of fiber materials. Specifically, a difference in suction resistance may be achieved by configuring the outer portion 231 with a fiber material arranged more irregularly than the core portion 232 . This is because, in general, the more the fibers are arranged side by side, the easier the airflow path is secured to reduce the suction resistance, and the more irregularly arranged, the more the suction resistance increases.

As another example, a difference in attraction resistance may be achieved based on a combination of the above-described examples.

Meanwhile, in some embodiments, as shown in FIG. 5 , the cross-section of the core part 232 may have a tapered shape. For example, the core part 232 may have a shape (e.g. a cone-like shape) in which the area becomes smaller toward the end of the mouthpiece. Also, as described above, a difference in suction resistance may exist between the outer portion 231 and the core portion 232 . In this case, the structural characteristics of the core part 232 are added to the difference in suction resistance, so that the mainstream smoke concentration effect can be further strengthened, and thus the flavor expression of the flavor beads 20 can be maximized.

For reference, FIG. 5 illustrates that the inclination angle in the clockwise direction with respect to the longitudinal axis of the core part 232 is constant as an example, but this is only for convenience of understanding, and the inclination angle is varied in various patterns (eg, gradually increasing). / decrease), and the inclination of the core part 232 may have a curved shape (eg, convex/concave). Accordingly, the scope of the present disclosure is not limited by the example illustrated in FIG. 5 .

So far, the filter 2 with improved fragrance expression according to some embodiments of the present disclosure has been described with reference to FIGS. 4 and 5 . As described above, smoke and/or aerosol may be concentrated toward the flavor beads 20 located in the core part 232 through the difference in suction resistance between the core part 232 and the outer part 231 . Accordingly, the flavor expression of the filter 2 may be further improved during smoking.

Hereinafter, a method of manufacturing the above-described flavor beads 20 will be briefly described with reference to FIG. 6 .

6 is an exemplary flowchart schematically illustrating a method of manufacturing flavor beads 20 according to some embodiments of the present disclosure. However, this is only a preferred embodiment for achieving the purpose of the present disclosure, and it goes without saying that some steps may be added or deleted as necessary.

As shown in FIG. 6 , the manufacturing method of the flavor beads 20 may start in step S20 of compounding the flavor composition. In this step, the composition components and the composition ratio of the flavor composition may vary depending on the embodiment.

In some embodiments, a flavor composition may be prepared by combining a polysaccharide material, a flavor material (e.g. a flavor material in a solid state) and a binder. The polysaccharide material may serve to form the skeleton of the flavor beads 20 , and may include, but is not limited to, a crystalline cellulose material. The flavor material is a material capable of imparting flavor to smoke and/or aerosol, and may include, but is not limited to, a menthol material in a solid powder form. The binder may include any material capable of enhancing the bonding force between the materials constituting the flavor composition. The blended flavor composition may be in powder form, but the scope of the present disclosure is not limited thereto.

In the above-described embodiments, the content of the polysaccharide material may be about 20% by weight or more. Preferably, the content may be about 30% by weight, 40% by weight, or 45% by weight or more. In addition, the content of the polysaccharide material may be about 80% by weight or less. Within this numerical range, flavor beads 20 having an appropriate density and/or hardness can be prepared.

In addition, the content of flavoring substances may be about 5% by weight or 15% by weight or more. Preferably, the content may be about 30% by weight, 40% by weight, 50% by weight or 60% by weight. In addition, the content of the flavor material may be about 70% by weight or less. Within this numerical range, the flavor development and flavor persistence of the flavor beads 20 may be improved.

In addition, the content of the binder may be about 10% by weight or more. Preferably, the content may be about 20% by weight, 30% by weight, or 40% by weight or more. In addition, the content of the binder may be about 70% by weight or less. Within this numerical range, flavor beads 20 having an appropriate density and/or hardness can be prepared.

In some embodiments, the flavor composition may include 20% to 80% by weight polysaccharide material, 5% to 70% by weight flavor material, and 10% to 70% by weight binder. Within this numerical range, high-quality flavor beads 20 can be easily manufactured.

Steps S40 to S80 relate to a tableting process, which is one of various dry processes, and may be performed using a tablet press well known in the art. However, the scope of the present disclosure is not limited thereto, and the flavor beads 20 may be manufactured through other processes.

In step S40, a filling process may be performed. For example, the flavor composition may be filled into a mold in a tableting machine.

In step S60, a pressing process may be performed. For example, the flavor composition may be compressed into beads by applying pressure to a mold filled with the flavor composition.

In step S80, a discharging process may be performed. For example, the flavor beads 20 formed through the pressing process may be discharged from the mold of the tableting machine. The discharged flavor beads 20 may be introduced into the filter plug 10 during the manufacturing process of the filters (e.g. 1 and 2) later.

So far, it has been described with respect to the manufacturing method of the flavor beads 20 according to some embodiments of the present disclosure with reference to FIG. 6 . According to the above-described method, the high-quality flavor beads 20 can be easily manufactured through the tableting process.

Hereinafter, with reference to FIG. 7 , a smoking article 100 with improved fragrance persistence according to some embodiments of the present disclosure will be described.

7 is an exemplary diagram schematically illustrating a smoking article 100 with improved fragrance persistence in accordance with some embodiments of the present disclosure.

As shown in FIG. 7 , the smoking article 100 may include a filter unit 120 , a smoking material unit 110 , and a wrapper 130 . However, only the components related to the embodiment of the present disclosure are illustrated in FIG. 7 . Accordingly, those of ordinary skill in the art to which the present disclosure pertains can see that other general-purpose components other than those shown in FIG. 7 may be further included. Hereinafter, each component of the smoking article 100 will be described.

The filter unit 120 may perform a filtering function for smoke and/or aerosol generated by the smoking material unit 110 . The filter unit 120 may be located downstream of the smoking material unit 110 and connected to the downstream end of the smoking material unit 110 . For example, the filter unit 120 and the smoking material unit 110 may have a cylindrical shape, are aligned in the longitudinal axis direction, and may be connected by a tipping wrapper. The tipping wrapper may connect at least a portion of the filter unit 120 and at least a portion of the smoking material unit 110 together to connect the filter unit 120 and the smoking material unit 110 . Where the filter portion 120 forms the downstream end of the smoking article 100 , the filter portion 120 may also function as a mouthpiece in contact with the smoker's mouth.

As illustrated, the filter unit 120 may be a filter including flavor beads 20 . For example, the filter unit 120 may correspond to the filters 1 and 2 described with reference to FIGS. 1 to 5 . For clarity of the present disclosure, further description of the filter unit 120 will be omitted.

Next, the smoking material unit 110 may include a smoking material capable of generating smoke and/or aerosol as it burns or is heated. That is, smoking article 100 may be a combustible smoking article or a heated smoking article used with a smoking device (e.g. 1000 in FIGS. 8-10 ). The smoking material unit 110 may further include a wrapper for wrapping the smoking material. In addition, the smoking material unit 110 may be located upstream of the filter unit 120 and connected to the upstream end of the filter unit 120 . Smoke and/or aerosol generated by the smoking material unit 110 may be inhaled through the filter unit 120 through the smoker's mouth.

Smoking material may include, for example, tobacco material. Tobacco material may include, for example, tobacco leaf pieces, tobacco stems or materials processed therefrom, and the like. As a more specific example, the tobacco material may include pulverized tobacco leaves, pulverized reconstituted tobacco, expanded cornflower, expanded stems and leaflets, and the like.

In some embodiments, the smoking material may further include 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. Wetting agents can keep moisture in the tobacco material at an appropriate level, softening its intrinsic taste, and enriching the amount of atomization. In addition, flavoring agents include, for example, 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, clove extract (or clove substance) or coffee can do.

In some embodiments, the smoking material unit 110 may further include a material that acts as a sound generating factor during combustion (ie, generates a combustion sound) (hereinafter, “sound generating material”). The sound-generating material may consist, for example, of 15% to 90% by weight carbohydrate material, 5% to 45% glycerin by weight and 3% to 43% water by weight, and is formed in the form of beads ( eg beads having a diameter of about 0.8 mm to 2.0 mm). The surprising fact that carbohydrate substances (eg starch, agar, pectin) generate sound during combustion was revealed during the course of continuous research. was confirmed to occur. According to the present embodiment, an auditory effect and an olfactory effect by the flavor beads 20 are further provided during smoking, so that a more improved smoking experience can be provided to the smoker.

On the other hand, the flavor transfer amount (eg, flavor transfer amount per puff) of the smoking article 100 or the filter unit 120 is determined by the physical properties (eg hardness, density, diameter) of the flavor beads 20 , the content of flavor substances, and the filter unit ( 120) may vary depending on the structure of the

In some embodiments, the average flavor transfer per puff of smoking article 100 may be greater than or equal to about 0.5 mg/puff. Preferably, the average flavor transfer amount according to the puff may be about 1.0 mg/puff, about 1.5 mg/puff, 2.0 mg/puff, or 2.5 mg/puff or more. In this regard, reference will be made to Experimental Examples 1 and 2 further.

In some embodiments, the standard deviation of the amount of flavor transfer across puffs of smoking article 100 may be less than or equal to about 1.0 mg/puff. Preferably, the standard deviation may be about 0.7 mg/puff, 0.6 mg/puff, 0.5 mg/puff, 0.4 mg/puff, 0.3 mg/puff, or 0.3 mg/puff or less. In this regard, reference will be made to Experimental Examples 1 and 2 further.

So far, the smoking article 100 with improved scent persistence according to some embodiments of the present disclosure has been described with reference to FIG. 7 . As described above, since the solid flavor beads 20 are injected into the filter unit 120 , the flavor expression and scent durability of the smoking article 100 can be improved during smoking. Accordingly, the smoker's smoking satisfaction may be greatly improved.

Hereinafter, an exemplary smoking device 1000 to which the smoking article 100 according to some embodiments of the present disclosure may be applied will be briefly described with reference to FIGS. 8 to 10 .

8-10 illustrate various types of smoking device 1000 to which smoking article 100 in accordance with some embodiments of the present disclosure may be applied. Specifically, Fig. 8 illustrates a cigarette-type smoking device, and Figs. 9 and 10 illustrate a hybrid type smoking device in which a cigarette and a liquid aerosol-forming substrate are used together.

First, as shown in FIG. 8 , the smoking device 1000 may include a housing, a heater 1300 , a control unit 1200 , and a battery 1100 . However, only components related to the embodiment of the present disclosure are illustrated in FIG. 8 . Accordingly, one of ordinary skill in the art to which the present disclosure pertains can know that other general-purpose components other than those shown in FIG. 8 may be further included. For example, the smoking device 1000 may further include an output module (eg motor, display) for outputting the state of the device and/or an input module (eg button) for receiving a user input (eg device on/off, etc.) may include Hereinafter, each component of the smoking device 1000 will be described.

The housing may form the appearance of the smoking device 1000 . In addition, the housing may form an accommodation space for accommodating the cigarette 2000 . The cigarette 2000 accommodated in the accommodation space may generate smoke and/or aerosol as it is heated by the heater 1300, and the generated smoke and/or aerosol may be inhaled through the user's mouth. Here, the cigarette 2000 may correspond to the smoking article 100 according to some embodiments of the present disclosure described above.

Next, the heater 1300 may generate smoke and/or aerosol by heating the cigarette 2000 accommodated in the accommodation space. Although FIG. 8 illustrates that the heater 1300 is implemented as an internal heating type as an example, this is only for convenience of understanding, and the heater 1300 may be implemented as an external heating type. In addition, the heater 1300 may be implemented as an electrically resistive heater or may be implemented as an induction heating type. As such, if the cigarette 2000 can be heated to generate smoke and/or aerosol, the heater 1300 may be implemented in any manner.

Next, the controller 1200 may control the overall operation of the smoking device 1000 . For example, the controller 1200 may control operations of the heater 1300 and the battery 1100 , and may also control operations of other components included in the smoking device 1000 . The controller 1200 may control the power supplied by the battery 1100 and the heating temperature of the heater 1300 . Also, the controller 1200 may determine whether the smoking device 1000 is in an operable state by checking the state of each of the components of the smoking device 1000 .

The controller 1200 may be implemented by at least one processor. The processor may be implemented as an array of a plurality of logic gates, or may be implemented as a combination of a general-purpose microprocessor and a memory in which a program executable in the microprocessor is stored. In addition, those of ordinary skill in the art to which the present disclosure pertains can clearly understand that the controller 1200 may be implemented with other types of hardware.

Next, battery 1100 may supply power used to operate smoking device 1000 . For example, the battery 1100 may supply power to the heater 1300 , and may supply power required for the controller 1200 to operate.

In addition, the battery 1100 may supply electric power required to operate electrical components such as a display (not shown), a sensor (not shown), and a motor (not shown) installed in the smoking device 1000 .

Hereinafter, another type of smoking device 1000 will be described with reference to FIGS. 9 and 10 .

9 and 10 are exemplary diagrams schematically illustrating a hybrid smoking device 1000 in which a cigarette 2000 and a liquid aerosol-forming substrate are used together. Specifically, FIG. 9 illustrates a device 1000 in which a vaporizer 1400 and a cigarette 2000 are arranged in parallel, and FIG. 10 is a device in which a vaporizer 1400 and a cigarette 2000 are arranged in series ( 1000) is exemplified. However, the scope of the present disclosure is not limited to these examples, and the arrangement shape of the inside of the smoking device 1000 may be modified.

9 or 10 , smoking device 1000 may further include vaporizer 1400 . However, this is only a preferred embodiment for achieving the purpose of the present disclosure, and it goes without saying that some components may be added or omitted as necessary. For clarity of the present disclosure, a description of content overlapping with the smoking device 1000 illustrated in FIG. 8 will be omitted.

The vaporizer 1400 may vaporize a liquid aerosol-forming substrate to generate an aerosol. For example, the vaporizer 1400 may be configured to include a liquid reservoir for storing a liquid aerosol-forming substrate, a wick for absorbing the stored liquid, and a liquid vaporizing element for vaporizing the absorbed liquid. At this time, the liquid-phase vaporizing element may be implemented as a heating element, may be implemented as a vibrating element that vaporizes the liquid phase through ultrasonic vibration, or may be implemented in other forms. Also, the scope of the present disclosure is not limited to these examples, and the vaporizer 1400 may be implemented in other manners. For example, the vaporizer 1400 may be implemented in a structure that does not include a wick.

The aerosol generated by the vaporizer 1400 may pass through the cigarette 2000 and be inhaled through the user's mouth. The liquid-phase vaporizing element of the vaporizer 1400 may be controlled by the controller 1200 .

So far, various types of smoking devices 1000 to which the smoking article 100 according to some embodiments of the present disclosure may be applied have been described with reference to FIGS. 8 to 10 . However, as mentioned above, the smoking article 100 may be manufactured as an article (e.g. combustion type cigarette) that provides a smoking experience through combustion.

Hereinafter, the configuration of the aforementioned filters 1 and 2 or the smoking article 100 and their effects will be described in more detail through Examples and Comparative Examples. However, since the following embodiments are only some examples of the filters 1 and 2 or the smoking article 100 , the scope of the present disclosure is not limited to these embodiments.

Example 1

A combustion cigarette having the same structure as the smoking article 100 illustrated in FIG. 7 was manufactured. Specifically, a combustion type cigarette having a length of about 84 mm and a diameter of about 7.7 mm (about 24.2 mm in circumference) was prepared, and one flavored bead prepared according to the method illustrated in FIG. . Menthol was used as the flavor material of the flavor beads, the menthol content of the flavor beads was about 7 mg, the diameter of the flavor beads was about 3.0 mm, and the hardness of the flavor beads measured according to KSM-1802 was about 98%. In addition, when preparing flavor beads, about 45% by weight of crystalline cellulose material, about 20% by weight of wheat flour, and about 35% by weight of other materials (e.g. binder, etc.) were blended to prepare a flavor composition. In addition, cut filler to which menthol flavor is not applied was used as the smoking material of the cigarette.

Example 2

A combustion-type cigarette similar to Example 1 was prepared, except that the flavor beads had a menthol content of about 14 mg and the flavor beads had a hardness of about 97%. When preparing flavor beads, about 45% by weight of crystalline cellulose material, about 40% by weight of menthol powder, and about 15% by weight of other substances (eg, binder, etc.) were blended to prepare a flavor composition.

Example 3

A combustion cigarette similar to Example 1 was prepared, except that the flavor beads had a menthol content of about 18 mg and the flavor beads had a hardness of about 96%. When preparing flavor beads, about 30% by weight of crystalline cellulose material, about 50% by weight of menthol powder, and about 20% by weight of other substances (e.g. binder, etc.) were blended to prepare a flavor composition.

Example 4

A heated cigarette having the same structure as the smoking article 100 illustrated in FIG. 7 was manufactured. Specifically, a heating-type cigarette having a length of about 48 mm and a diameter of about 7.0 mm (about 22 mm in circumference) was prepared, and flavor beads having the same specifications as those of Example 1 were added to the filter when manufacturing the cigarette. In addition, cut filler to which menthol flavor is not applied was used as the smoking material of the cigarette.

Example 5

A heated cigarette similar to Example 4 was prepared, except that the flavor beads had a menthol content of about 14 mg and the flavor beads had a hardness of about 97%. When preparing flavor beads, about 45% by weight of crystalline cellulose material, about 40% by weight of menthol powder, and about 15% by weight of other substances (e.g. binder, etc.) were blended to prepare a flavor composition.

Example 6

A heated cigarette similar to Example 4 was prepared, except that the flavor beads had a menthol content of about 18 mg and the flavor beads had a hardness of about 96%. When preparing flavor beads, about 30% by weight of crystalline cellulose material, about 50% by weight of menthol powder, and about 20% by weight of other substances (e.g. binder, etc.) were blended to prepare a flavor composition.

Examples 7 to 12

A combustion-type cigarette similar to Example 3 was prepared, except that the diameter of the flavor beads was different. The diameters of the flavor beads added to the combustion cigarette according to Examples 7 to 12 were 2.0mm, 2.5mm, 3.5mm, 4.0mm, 4.5mm, and 5.0mm, respectively.

Examples 13 to 15

A combustion-type cigarette was prepared in the same manner as in Example 3, except that the hardness of the flavor beads was different. The hardness of the flavor beads added to the combustion cigarette according to Examples 13 to 15 was 90%, 94%, and 98%, respectively.

Examples 16-21

A heated cigarette was prepared in the same manner as in Example 6, except that the diameter of the flavor beads was different. The diameters of the flavor beads added to the heated cigarette according to Examples 16 to 21 were 2.0mm, 2.5mm, 3.5mm, 4.0mm, 4.5mm, and 5.0mm, respectively.

Comparative Example 1

A combustion type cigarette similar to Example 1 was prepared, except that a cellulose acetate filter to which a menthol material was added in a liquid form was used. Specifically, a TJNS filter in which a menthol fragrance liquid was sprayed into a cellulose acetate filter was used, and a capsule containing a menthol fragrance liquid was added into the TJNS filter, and the total amount of menthol added was about 10 mg.

Comparative Example 2

A heated cigarette similar to Example 4 was prepared, except that a filter to which a menthol material was added in a liquid form was used. Specifically, a TJNS filter in which a menthol fragrance liquid was sprayed into a cellulose acetate filter was used, and a capsule containing a menthol fragrance liquid was added into the TJNS filter, and the total amount of menthol added was about 10 mg.

Table 1 below summarizes the conditions of the cigarettes according to Examples 1 to 21 and Comparative Examples 1 and 2.

division cigarette type aromatization Menthol added amount (mg) Diameter (mm) Hardness(%) Example 1 combustion type bead
/1ea 7 3.0 98 Example 2 14 97 Example 3 18 96 Example 4 heating type 7 98 Example 5 14 97 Example 6 18 96 Example 7 combustion type 18 2.0 Example 8 2.5 Example 9 3.5 Example 10 4.0 Example 11 4.5 Example 12 5.0 Example 13 3.0 90 Example 14 3.0 94 Example 15 3.0 98 Example 16 heating type 2.0 96 Example 17 2.5 Example 18 3.5 Example 19 4.0 Example 20 4.5 Example 21 5.0 Comparative Example 1 combustion type TJNS+Capsule 10 - - Comparative Example 2 heating type TJNS+Capsule 10 - -

Experimental Example 1: Evaluation of flavor development and flavor persistence for combustion-type cigarettes

An experiment was conducted to evaluate the flavor development and flavor persistence for the combustion-type cigarettes according to Examples 1 to 3 and Comparative Example 1. For the evaluation of fragrance development and fragrance persistence, the amount of menthol transfer per puff during smoking was measured. The experiment was conducted according to the HC (Health Canada) smoking conditions using an automatic smoking device in a smoking room with a temperature of about 20 °C and a humidity of about 62.5%, and the amount of menthol per puff was measured 5 times based on 6 puffs per time. It was calculated as an average value for the results. The experimental results are shown in Table 2 below.

division
(menthol
added amount) Menthol transfer amount per puff (mg/puff) One 2 3 4 5 6 gun
amount of fulfillment Average Standard
Deviation Example 1
(7mg) 1.08 0.96 1.21 1.23 1.33 1.28 7.09 1.182 0.137 Example 2
(14mg) 2.29 2.03 2.13 2.29 2.26 2.28 13.28 2.213 0.109 Example 3 (18 mg) 2.46 2.76 2.68 2.68 2.71 2.81 16.1 2.683 0.120 Comparative Example 1
(10mg) 1.53 0.73 0.64 0.44 0.37 0.2 3.91 0.652 0.470

Referring to Table 2, it was found that the average menthol transfer amount according to the puff of the combustion cigarette according to the Examples greatly exceeded that of Comparative Example 1. In particular, even in the case of Example 1 in which the amount of menthol added was smaller than that of Comparative Example 1, it was found that the average menthol transfer amount exceeded that of Comparative Example 1. This is considered to be because the menthol fragrance liquid is lost due to its own volatilization, and this reduces the actual transfer amount during smoking. As a result, it can be seen that the flavor development of the combustion-type cigarette according to the Examples is superior to that of Comparative Example 1. Furthermore, it can be seen that adding the menthol material in a solid form can add a large amount of the menthol material more easily than adding the menthol material in a liquid form, which is effective in improving the flavor development of the combustion-type cigarette.

In addition, the combustion-type cigarettes according to the Examples showed a very small variation in the amount of menthol transfer according to the puff compared to Comparative Example 1. For example, it can be seen that the standard deviation of the amount of menthol transfer according to the puff of Example 3 is about 1/4 of that of Comparative Example 1. In particular, in the case of Comparative Example 1, it can be seen that the amount of menthol transfer rapidly decreases toward the second half of the puff. On the other hand, it can be seen that the menthol transfer amount for each puff of the combustion-type cigarette according to the embodiments does not change significantly even when going to the second half of the puff. As such, it can be seen that the flavor persistence of the combustion-type cigarette according to the Examples is much superior to that of Comparative Example 1.

Experimental Example 2: Evaluation of flavor development and flavor persistence for a heated cigarette

An experiment was conducted to evaluate the flavor development and flavor persistence for the heated cigarettes according to Examples 4 to 6 and Comparative Example 2. The experimental method was performed in the same manner as in Experimental Example 1 described above, and the menthol transfer amount for each puff was calculated as an average value of the results of 5 measurements based on 12 puffs per time. The experimental results are shown in Tables 3 and 4 below.

division
(menthol
added amount) Menthol transfer amount per puff (mg/puff) One 2 3 4 5 6 7 8 9 Example 4
(7mg) 0.59 0.53 0.41 0.51 0.56 0.45 0.51 0.56 0.41 Example 5
(14mg) 0.98 0.99 1.01 1.02 1.05 1.07 1.07 1.1 1.12 Example 6 (18 mg) 1.18 1.2 1.16 1.17 1.19 1.19 1.2 1.21 1.23 Comparative Example 2
(10mg) 0.59 0.42 0.47 0.45 0.32 0.37 0.25 0.21 0.15

division
(menthol
added amount) Menthol transfer amount per puff (mg/puff) 10 11 12 gun
amount of fulfillment Average Standard
Deviation Example 4
(7mg) 0.67 0.61 0.57 6.38 0.532 0.079 Example 5
(14mg) 1.17 1.18 1.19 12.95 1.079 0.074 Example 6
(18mg) 1.24 1.16 1.16 14.29 1.191 0.027 Comparative Example 2
(10mg) 0.12 0.18 0.1 3.63 0.303 0.158

Referring to Tables 3 and 4, it was found that, similar to Experimental Example 1, the average amount of menthol transfer according to the puff of the heated cigarette according to Examples greatly exceeded that of Comparative Example 2. In particular, even in the case of Example 4 in which the amount of menthol added was smaller than that of Comparative Example 2, it was found that the average menthol transfer amount exceeded that of Comparative Example 2. As a result, it can be seen that the flavor development of the heating-type cigarette according to the Examples is superior to that of Comparative Example 2.

In addition, it was found that the variation in the amount of menthol transfer according to the puff was very small in the heating-type cigarettes according to the Examples compared to Comparative Example 2. For example, it can be seen that the standard deviation of the amount of menthol transfer according to the puff of Example 6 is about 1/5 of that of Comparative Example 2. In particular, in the case of Comparative Example 2, it can be seen that the amount of menthol transfer rapidly decreases toward the latter part of the puff, which is thought to be due to the rapid transfer of menthol in the early part of the puff due to the volatility of the menthol flavoring solution even in a heated cigarette. On the other hand, it can be seen that the transfer amount of menthol for each puff of the heated cigarette according to the embodiments does not change significantly even when going to the second half of the puff. As a result, it can be seen that the flavor persistence of the heated cigarette according to the Examples is much superior to that of Comparative Example 2. In addition, it can be seen that the above-described filters 1 and 2 can be sufficiently utilized to improve the flavor development and flavor persistence of not only combustion-type cigarettes but also heating-type cigarettes.

Experimental Example 3: Evaluation of suction resistance of cigarettes according to the diameter and hardness of flavor beads

For the cigarettes according to Examples 7 to 21, an experiment was conducted to measure the effect of the size and hardness of flavor beads on the resistance to aspiration of the cigarette. Specifically, for the combustion-type cigarettes according to Examples 7 to 15 and the heating-type cigarettes according to Examples 16 to 21, the suction resistance was repeatedly measured 5 times, and the average and deviation of the measurement results were calculated. The resistance to aspiration of each cigarette was measured according to ISO 6565:2011. The experimental results for the combustion-type cigarette are shown in Table 5 below, and the experimental results for the heating-type cigarette are shown in Table 6 below.

division
(Diameter/Hardness) Suction resistance (mmWG) Average Deviation Example 3
(3.0mm/96%) 161.2 2.08 Example 7
(2.0mm/96%) 150.2 3.78 Example 8
(2.5mm/96%) 153.4 2.12 Example 9
(3.5mm/96%) 165.4 1.58 Example 10
(4.0mm/96%) 162.3 1.78 Example 11
(4.5mm/96%) 169.5 3.01 Example 12
(5.0mm/96%) 175.3 4.01 Example 13
(3.0mm/90%) 156.2 2.26 Example 14
(3.0mm/94%) 158.2 2.33 Example 15
(3.0mm/98%) 168.2 1.46 Comparative Example 1 160.2 1.53

division Suction resistance (mmWG) Average Deviation Example 6
(3.0mm/96%) 60.1 2.78 Example 16
(2.0mm/96%) 55.3 4.81 Example 17
(2.5mm/96%) 58.2 2.48 Example 18
(3.5mm/96%) 61.5 3.01 Example 19
(4.0mm/96%) 60.3 3.89 Example 20
(4.5mm/96%) 71.2 4.31 Example 21
(5.0mm/96%) 75.5 4.51 Comparative Example 2 60.8 3.12

Referring to Tables 5 and 6, there was no significant difference in resistance to suction between the cigarettes according to Examples and Comparative Examples. Accordingly, it can be seen that even if the solid flavor beads are put into the filter, the suction resistance of the cigarette is not significantly affected.

However, referring to the experimental results for Examples 3 and 7 to 12, it was found that the suction resistance slightly increased as the diameter of the flavor beads increased. For example, in the case of the combustion cigarette according to Example 12, the resistance to suction was measured to be about 170 mmWG/84 mm or more. Through this, it can be seen that the size of the flavor beads has a slight effect on the suction resistance, and it can be seen that it is preferable to input flavor beads of an appropriate size when manufacturing a filter for a combustion cigarette. For example, it can be seen that the diameter of the flavor beads is preferably from about 2.0 mm to about 4.5 mm or from about 2.5 mm to about 4.0 mm, considering that the typical suction resistance of a burning cigarette is about 160 mmWG/84 mm.

In addition, in the experimental results of the heating-type cigarette according to Examples 6 and 16 to 21, a tendency similar to that of the combustion-type cigarette was shown. Therefore, it can be seen that it is preferable to add flavor beads of an appropriate size even when the filter of the heated cigarette is manufactured. For example, considering that the typical suction resistance of a heated cigarette is about 60 mmWG/48 mm, it can be seen that the diameter of the flavor beads is preferably about 2.0 mm to 4.5 mm or about 2.5 mm to about 4.0 mm.

On the other hand, referring to the experimental results for Examples 3 and 13 to 15, it was found that the suction resistance slightly increased as the hardness of the flavor beads increased. Through this, it can be seen that the hardness of the flavor beads has a slight effect on the suction resistance, and it can be seen that it is preferable to input flavor beads of an appropriate hardness when manufacturing a filter for a combustion cigarette. For example, it can be seen that the hardness of flavor beads is preferably about 90% to 98%, considering that the typical suction resistance of the combustion-type cigarette is about 160 mmWG/84 mm.

The configuration of the filters 1 and 2 or the smoking article 100 and the effects thereof have been described in more detail through various examples and comparative examples so far.

Although embodiments of the present disclosure have been described with reference to the accompanying drawings, those of ordinary skill in the art to which the present disclosure pertains may practice the present disclosure in other specific forms without changing the technical spirit or essential features. can understand that there is Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive. The protection scope of the present disclosure should be interpreted by the following claims, and all technical ideas within the equivalent range should be interpreted as being included in the scope of the technical ideas defined by the present disclosure.

1, 2: filter
10: filter plug
11, 21: Rapper
12, 13, 14, 15, 22, 23: filter segment
16: cavity
20: flavor beads
100: smoking article
110: smoking material part
120: filter unit
130: rapper
1000: smoking device
1100: battery
1200: control
1300: heater
1400: vaporizer
2000: Cigarette

Claims (11)

A filter for a smoking article, comprising:
a filter plug comprising filter material; and
solid flavor beads located within the filter plug;
filter. According to claim 1,
The diameter of the flavor beads is 2.5 mm to 5.0 mm,
filter. According to claim 1,
The diameter of the flavor beads is 30% to 80% of the diameter of the filter plug,
filter. According to claim 1,
wherein said flavor beads comprise a menthol substance;
filter. According to claim 1,
The hardness of the flavor beads measured according to KSM-1802 is 70% or more,
filter. According to claim 1,
The flavor beads are prepared by processing the flavor composition through a dry process,
wherein the flavor composition comprises a polysaccharide material, a flavor material and a binder;
filter. 7. The method of claim 6,
The flavor composition comprises:
20% to 80% by weight of a polysaccharide material,
5% to 70% by weight of flavoring substances and
10% to 70% by weight of the binder,
filter. 7. The method of claim 6,
wherein the flavoring material is in the form of a solid powder,
filter. According to claim 1,
The average flavor transfer amount according to the puff of the filter is 0.5 mg/puff or more,
filter. According to claim 1,
The standard deviation of the flavor transfer amount according to the puff of the filter is 0.5 mg/puff or less,
filter. smoking material department; and
It is located downstream of the smoking material section and comprises a filter section to which solid flavor beads are added.
smoking articles.

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