KR102450719B1 - Cooling structure for smoking articles and smoking articles containing the same - Google Patents

Abstract

According to some embodiments of the present invention, a first surface extending on a plane formed by the upstream and downstream directions of the smoking article, that is, a first direction and a second direction perpendicular to the first direction, and a second surface opposite to the first surface A cooling structure for smoking articles formed of a cooling sheet including a base sheet having two sides and a phase change material pattern formed by regular patterning of phase change materials on the first surface of the base sheet, and the cooling structure Smoking items are provided.

Description

COOLING STRUCTURE FOR SMOKING ARTICLES AND SMOKING ARTICLES CONTAINING THE SAME}

The present invention relates to a cooling structure for a smoking article and a smoking article including the same, and more particularly, to a cooling structure in which a phase change material pattern is formed on a base sheet and a smoking article including the same.

Smoking articles are generally provided with a filter part that filters some components included in the aerosol, and has a cooling performance that allows the user to inhale the aerosol generated by the recent combustion or heating of the smoking material part at an appropriate temperature. Various studies on eggplant filters are being conducted.

On the other hand, if the cooling structure is designed in consideration of only the cooling effect of the aerosol as in the prior art, there may be a problem that the sensory characteristics such as the tobacco taste or harmonious taste inherent in smoking articles are impaired, and the tobacco taste given to each product when the user smokes. There is also a disadvantage that the flavor expression characteristics are not constant.

The present invention has been devised to solve the above problems, and an object of the present invention is to provide a sufficient cooling effect of the aerosol and at the same time do not impair the intrinsic sensory characteristics of smoking articles, and further increase the flavor by the expression of flavor during smoking. An object of the present invention is to provide a cooling structure for smoking articles that can be secured and a smoking article including the same.

The technical problems of the present invention 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 following description.

According to some embodiments of the present invention for solving the above problems, a first surface extending on a plane formed by an up-and-down direction (hereinafter, referred to as a first direction) of a smoking article and a second direction perpendicular to the first direction; , A base sheet provided with a second surface opposite to the first surface; and a phase change material pattern formed by regularly patterning phase change materials on the first surface of the base sheet.

The cooling structure may be formed by rolling or clamping the cooling sheet in the first direction as an axis and in the second direction. When the cooling structure is formed by rolling the cooling sheet, the lower end of each of the phase change materials is in contact with the first surface of the base sheet and supports the base sheet, and the upper end of each of the phase change materials is It may be in contact with the second surface of the base sheet and support the base sheet.

In some embodiments, the base sheet may be a cellulose sheet, and the phase change materials may be formed of a material including sugars. Preferably, the phase change materials may be composed of a material including at least one of fructose, glucose, maltose, galactose, sugar, and mannitol.

In some embodiments, the base sheet includes an upstream first region and a second region positioned downstream of the first region, wherein first phase change materials are formed in the first region and the second region Second phase change materials having a composition different from that of the first phase change materials may be formed.

Meanwhile, the base sheet may extend 5 mm to 20 mm in the first direction and 50 mm to 300 mm in the second direction.

The cooling structure may have a porosity of 40% to 80% in the first direction.

In some embodiments, the phase change material pattern may have a matrix structure or a honeycomb structure.

Meanwhile, a pitch in a first direction between phase change materials adjacent to each other in the first direction among the phase change materials may be greater than a pitch in a second direction between phase change materials adjacent to each other in the second direction.

According to some embodiments of the present invention, a smoking material unit; a cooling structure located downstream of the smoking material part; and a mouthpiece positioned downstream of the cooling structure, wherein the cooling structure includes a cooling structure formed by winding a cooling sheet on which phase change materials are regularly patterned on a base sheet.

In some embodiments, the smoking article may further include a support structure in which one end is in contact with the smoking material unit downstream of the smoking material unit and the cooling structure and the other end opposite to the one end are in contact with the cooling structure upstream of the cooling structure. .

The cooling structure for a smoking article of the present invention has a structure in which a cooling sheet having a phase change material pattern formed on a base sheet is wound, thereby providing a sufficient cooling effect of an aerosol and improving the intrinsic sensory characteristics of a smoking article, and furthermore, when smoking It is also possible to secure an increase in the sense of flavor due to the expression of the fragrance.

In addition, when the phase change material pattern is formed of the sugar materials according to embodiments of the present invention, it is possible to provide the user with an aerosol cooled to a uniform temperature even while the smoking material part is gradually heated, and furthermore, the phase change It is possible to further maximize the cooling effect by the latent heat of the material.

Furthermore, when the phase change material is formed in the pattern according to the embodiments of the present invention, the air flow by the user's aerosol suction operation can pass through the entire area of the cooling structure evenly, and accordingly, the phase change material formed in the cooling structure It is possible to maximize the cooling performance and fragrance expression performance by the

1 is a view exemplarily showing the configuration of a non-combustible smoking article to which a cooling structure according to some embodiments of the present invention is employed.
2 is a view exemplarily showing the configuration of a combustion type smoking article employing a cooling structure according to some embodiments of the present invention.
3 is a conceptual diagram schematically illustrating a cooling structure according to some embodiments of the present invention.
4 is a view schematically showing a state in which a cooling structure according to some embodiments of the present invention is deployed, FIG. 5 is a plan view of area A of FIG. 4 , and FIG. 6 is a cross-sectional view of area A of FIG. 4 .
7 is a plan view of the cooling structure according to some other embodiments of the present invention, viewed from a region corresponding to the region A of FIG. 4 .
8 is an evaluation result of sensory characteristics of smoking articles according to some embodiments of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Advantages and features of the present invention 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 present invention is not limited to the embodiments published below, but may be implemented in various different forms, and only these embodiments make the publication of the present invention complete, and common knowledge in the art to which the present invention pertains It is provided to fully inform those who have the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout.

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 the present invention belongs. In addition, terms defined in a commonly used dictionary are not to be interpreted ideally or excessively unless clearly defined in particular.

Also, in the present specification, the singular form may also include a plural form unless otherwise specified in the text. As used herein, “comprises” and/or “comprising” refers to the presence of one or more other components, steps, operations and/or elements mentioned. or addition is not excluded.

As used herein, terms including an ordinal number, such as 'first' or 'second', may be used to describe various elements, but the elements should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another.

Throughout the specification, 'smoking articles' may refer to articles that can generate aerosols, such as cigarettes (cigarettes) and cigars. Smoking articles may include an aerosol-generating material or an aerosol-forming substrate. In addition, smoking articles may include solid materials based on tobacco raw materials, such as leaf tobacco, cut filler, reconstituted tobacco, and the like. Smoking materials may contain volatile compounds.

In addition, in the description of smoking articles, 'upstream' or 'upstream direction' means a direction away from the user's mouth smoking a smoking article, and 'downstream' or 'downstream direction' refers to a direction away from the user's mouth smoking a smoking article. It means the approaching direction. For example, in the smoking article 100 shown in FIG. 1 , the smoking material unit 110 is positioned upstream or upstream of the cooling structure 130 .

1 is a view exemplarily showing the configuration of a non-combustible smoking article to which a filter for smoking articles according to some embodiments of the present invention is employed.

Referring to FIG. 1 , the smoking article 100 may include a smoking material unit 110 , a support structure 120 , a cooling structure 130 , a mouthpiece unit 140 , and a wrapper 150 . Although not shown, at least one of the smoking material unit 110 , the support structure 120 , the cooling structure 130 , and the mouthpiece unit 140 is packaged in separate wrappers before being packaged by the wrapper 150 . can be For example, the smoking material unit 110 is wrapped by a smoking material wrapper (not shown), and at least one of the support structure 120 , the cooling structure 130 , and the mouthpiece unit 140 is provided with a filter wrapper (not shown). ) can be packed.

The smoking material unit 110 may be filled with raw tobacco leaf, leaf tobacco, or a mixture of leaf tobacco and leaf tobacco. The mixture may be filled in the smoking material unit 110 in the form of a sheet or cut filler. The smoking material unit 110 may have an elongated rod shape and may have various lengths, circumferences and diameters. In addition, the smoking material unit 110 may include an aerosol generating material. For example, the aerosol generating material may include, but is not limited to, at least one of glycerin, propylene glycol, ethylene glycol, dipropylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol and oleyl alcohol. Furthermore, the smoking material portion 110 may contain other additive substances such as flavoring agents, wetting agents and/or acetate compounds.

The support structure 120 may be a tube-shaped structure including a hollow 120H therein. In addition, the support structure 120 may be manufactured by inserting a structure such as a film or a tube made of the same or different material in the interior (ie, the hollow 120H).

The support structure 120 may be manufactured using cellulose acetate. Accordingly, in a situation in which the heater of the aerosol generating device (not shown) that heats the smoking article 100 to form an aerosol is inserted into the smoking article 100, the material in the smoking material part 110 is moved backward (that is, downstream direction) can be prevented, and the cooling effect of the aerosol can also be generated.

The cooling structure 130 may serve as a cooling member for cooling the aerosol generated by heating the smoking material unit 110 by a heater (not shown) of the aerosol generating device. Accordingly, the user can inhale the aerosol cooled to an appropriate temperature.

On the other hand, the cooling structure 130 of the present invention may have a structure in which a base sheet having a phase change material pattern formed thereon is wound so as to have a sufficient cooling effect of the aerosol and to improve the sensory characteristics of a smoking article. It will be described later with reference to FIGS. 3 to 7 .

The mouthpiece 140 may serve as a filter for finally delivering the aerosol delivered from the upstream to the user by being located at the downstream end of the smoking article 100 . In some embodiments, the mouthpiece 140 may be a cellulose acetate filter. Although not shown, the mouthpiece 140 may be made of a recessed filter, and the mouthpiece 140 may include at least one crushable capsule (not shown) containing a flavor component.

The wrapper 150 may prevent the smoking article 100 from being burned. In addition, the wrapper 150 may prevent the holder of the aerosol generating device (not shown) from being contaminated by substances generated in the smoking article 100 .

Meanwhile, although not shown, the smoking article 100 may further include a front end filter segment bordering the smoking material unit 110 upstream of the smoking material unit 110 and having an aerosol channel (in this case, a support structure) (120) may be omitted). The front-end filter segment can prevent the smoking material part 110 from leaving the smoking article 300, and it is also possible to prevent the aerosol liquefied from the smoking material part 110 from flowing down to the outside of the smoking article during smoking. have.

On the other hand, the cooling structure according to the embodiments of the present invention may be applied as a component of a combustion type cigarette to be described later with reference to FIG.

2 is a diagram exemplarily illustrating the configuration of a combustion type smoking article 200 to which a cooling structure is employed according to some embodiments of the present invention.

Referring to FIG. 2 , the smoking article 200 may include a smoking material part 210 , a cooling structure 220 , a mouthpiece part 230 , a coupling wrapper 240 , and a tipping wrapper 250 .

Meanwhile, although the smoking article 200 in this embodiment is illustrated as a dual filter having two filters, that is, a cooling structure 220 and a mouthpiece 230, the filter unit is not limited thereto. For example, it is natural that the smoking article 200 may be provided as a mono filter composed of only the cooling structure 220 or as a triple filter having a total of three filters including the cooling structure 220 . Hereinafter, a case in which the filter unit of the smoking article 200 is configured as a dual filter will be described as an example.

The smoking material unit 210 may be filled with raw tobacco leaf, leaf tobacco, or a mixture of leaf tobacco and leaf tobacco. The mixture may be filled in the smoking material unit 210 in the form of a sheet or cut filler. The smoking material unit 210 may have an elongated rod shape and may have various lengths, circumferences, and diameters. In addition, the smoking material unit 210 may include an aerosol generating material. For example, the aerosol generating material may include, but is not limited to, at least one of glycerin, propylene glycol, ethylene glycol, dipropylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol and oleyl alcohol. Furthermore, the smoking material portion 210 may contain flavoring agents, wetting agents, and/or other additive materials such as acetate compounds.

The smoking material part 210 may be wrapped by the smoking material wrapper 210a. Although not shown, the smoking material wrapper 210a may have a double wrapper structure, and further, the smoking material wrapper 210a may be a low ignition cigarette paper in which one or more Low Ignition Propensity (LIP) bands (not shown) are formed. have.

The cooling structure 220 may have a structure in which a base sheet having a phase change material pattern formed thereon is wound so as to have a sufficient cooling effect of the aerosol and improve the sensory characteristics of a smoking article. It will be described later with reference to .

The mouthpiece unit 230 may be disposed downstream of the smoking material unit, and may be a region through which the user passes immediately before inhaling the aerosol material generated from the smoking material unit. The mouthpiece unit 230 may be formed of various materials, for example, may be a cellulose acetate filter. On the other hand, the mouthpiece unit 230 may be a filter processed by the TJNS method.

The cooling structure 220 and the mouthpiece 230 may be wrapped by at least one wrapper 220a, 230a, 240 . For example, the cooling structure 220 is packaged by the first wrapper 220a, the mouthpiece unit 230 is packaged by the second wrapper 230a, and the cooling structure 220 and the mouthpiece unit 230 are packaged. may be combined wrapped by a bonding wrapper 240 . Meanwhile, it goes without saying that some of the wrappers 220a , 230a , and 240 may be omitted, unlike shown in FIG. 2 .

The first wrapper 220a , the second wrapper 230a , and the combined wrapper 240 may apply the same wrapper to each other, but is not limited thereto, and wrappers having different characteristics may be applied. For example, some wrappers among the first wrapper 220a, the second wrapper 230a, and the bonding wrapper 240 may be porous wrappers, and some wrappers may be non-porous wrappers. As another example, some wrappers among the first wrapper 220a, the second wrapper 230a, and the combined wrapper 240 may be oil-resistant wrappers, and some wrappers may be non-oil-resistant wrappers.

The smoking material unit 210 packaged by the smoking material wrapper 210a and the filters 220 and 230 packaged by the bonding wrapper 240 may be combinedly packaged by the tipping wrapper 250 . That is, at least a portion of the smoking material unit 210 and the filters 220 and 230 may be further wrapped by the tipping wrapper 250 and physically coupled thereto.

The tipping wrapper 250 may be made of the same wrapper as any one of the first wrapper 220a, the second wrapper 230a, and the bonding wrapper 240, but is not limited thereto.

3 to 6 are views for explaining in more detail the cooling structures 130 and 220 described with reference to FIGS. 1 to 2 . That is, the winding cooling sheet C1 shown in FIG. 3 (a) or the winding cooling sheet C2 shown in FIG. 3 (b) is employed as the cooling structures 130 and 220 described above. can be

Specifically, FIG. 3 is a conceptual diagram schematically illustrating a wound cooling sheet according to some embodiments of the present invention, and FIG. 4 is a diagram schematically illustrating a state in which a cooling sheet according to some embodiments of the present invention is deployed. and FIG. 5 is a plan view of area A of FIG. 4 , and FIG. 6 is a cross-sectional view of area A of FIG. 4 .

3 to 6 , the cooling sheet 10 may include a base sheet 11 and a phase change material 12 formed by patterning the base sheet 11 .

Such a cooling sheet 10 is rolled roundly in a roll shape (or a vortex shape, etc.) to have an airflow path AP as shown in Fig. 3 (a), or as shown in Fig. 3 (b) It can be employed as the cooling structures 130 and 220 of the smoking articles 100 and 200 in various ways, such as being clamped to have an airflow path AP in the wrapper 20 surrounded by a cylindrical shape. The cooling sheet 10 is wound along the X-axis direction with the Y-axis of FIGS. 3 to 6 (ie, the up-stream direction of the smoking article) as an axis, and accordingly, the airflow path AP of the cooling structure is in the Y-axis direction. can be formed according to

In some embodiments, when the cooling sheet 10 is wound in the form of a roll as shown in (a) of FIG. 3 , the base sheet 11 may be wound while being spaced apart from each other with the phase change material 12 interposed therebetween. That is, the first surface of the base sheet 11 on which the phase change material 12 is patterned is supported on one end of the phase change material 12 (that is, the lower end of the phase change material 12), and the base sheet ( 11), the second surface on which the phase change material 12 is not patterned opposite the first surface is the other end of the phase change material 12 opposite to the one end (ie, the upper side of the phase change material 12 ). end) is supported and spaced apart and can be wound.

On the other hand, the length (10yL) of the smoking article up-and-down direction (Y-axis direction, hereinafter the first direction) of the base sheet 11 is the length (10xL) of the direction perpendicular to the first direction (X-axis direction, hereinafter the second direction) could be shorter. For example, the first direction length 10yL of the base sheet 11 may be approximately 5 mm to 20 mm, and the second direction length 10xL of the base sheet 11 may be approximately 50 mm to 300 mm, but is limited thereto not.

The base sheet 11 may be, for example, a cellulose sheet such as paper or PLA (Poly Lactic Acid).

The base sheet 11 may be formed by patterning a phase change material (PCM) 12 . The phase change material 12 is, for example, fatty acids such as caprylic acid, lauric acid, and undecylenic acid, monohydroxy alcohols such as 1-tetradecanol, sugars, ketones, ethers, amides, polymerization It may be made of a material containing at least one of retention and fatty acid esters, PLA.

In some embodiments, the phase change material 12 may be formed of a material including at least one of saccharide materials such as fructose, glucose, maltose, galactose, sugar, and mannitol.

Preferably, the phase change material 12 may be formed of a material in which at least two or more of the sugar materials are mixed. More preferably, the phase change material 12 may include first to third sugar materials. For example, the phase change material 12 may include about 15% to 30% by weight of the first saccharide material, about 25% to 40% by weight of the second saccharide material, and about 10% to 30% by weight of the third saccharide material It may contain a sugar substance. Here, the first saccharide material may include at least one of fructose and glucose, the second saccharide material may include at least one of maltose and galactose, and the third saccharide material may include at least one of sugar and mannitol. . When the phase change material 12 is selected in this way, it is possible to provide the user with an aerosol cooled to a uniform temperature even while the smoking material part is gradually heated, and furthermore, it is possible to provide a desired aerosol by the flavor expression of the phase change material 12 . Sensory characteristics can also be secured.

In some embodiments, the base sheet 11 may be patterned with a phase change material having a different composition according to an area. Specifically, the first phase change material is disposed in the first upstream region of the base sheet 11 (region S1 in FIG. 5 ), and in the second region downstream of the base sheet 11 (ie region S2 in FIG. 5 ). A second phase change material may be formed in the remaining regions except for the first region.

Preferably, the first phase change material includes at least one of the second saccharide material and the third saccharide material, and the second phase change material includes at least one of the first saccharide material and the second saccharide material. can For example, the first phase change material may include at least one of maltose, galactose, sugar, and mannitol, and the second phase change material may include at least one of fructose, glucose, maltose, and galactose. Considering that the aerosol temperature in each of the upstream region and the downstream region of the cooling structure is different, when the phase change material of different composition is patterned on the base sheet, the cooling effect by the latent heat of the phase change material can be further maximized. can

In some embodiments, each of the patterned phase change materials 12 may have a substantially truncated cone shape with a smooth edge. That is, each of the patterned phase change materials 12 may have an approximately circular shape in a plan view (see FIG. 5 ), and may have an approximately trapezoidal shape with soft corners in a cross-sectional view (see FIG. 6 ).

Each of the phase change materials 12 may have a substantially regular pattern and be formed on the base sheet 11 .

Preferably, the first direction pitch 12y between the phase change materials adjacent to each other in the up-and-down direction (the Y-axis direction, hereinafter the first direction) of the smoking article and the direction perpendicular to the first direction (X-axis direction, hereinafter the second direction) ), the second direction pitch 12x between the phase change materials adjacent to each other may be about 0.5 mm to 5 mm. Here, more preferably, the height 12t of each of the phase change materials is greater than the diameter 12d of each of the phase change materials, and the second direction pitch 12x is greater than the diameter 12d of each of the phase change materials, The first direction pitch 12y may be greater than the second direction pitch 12x.

When the phase change material is formed with the pattern as described above, the airflow caused by the user's aerosol suction operation can pass through the entire area of the cooling structure evenly, and accordingly, the cooling performance and flavor are expressed by the phase change material formed in the cooling structure. While maximizing the performance, it is possible to minimize the stimulation of smoking caused by excessive heat exposure of the phase change material located in a specific part.

On the other hand, the size conditions of the phase change material are premised on the premise that the wound cooling sheet, that is, the cooling structures 130 and 220 of FIG. 1 or 2, has a porosity of about 40% to 80% in the up-stream direction of the smoking article. It is desirable to meet

7 is a plan view of the cooling structure according to some other embodiments of the present invention, viewed from a region corresponding to the region A of FIG. 4 .

The phase change material 12 may form a matrix structure arrangement in a plan view as shown in FIG. 5 , or may form a honeycomb structure arrangement in a plan view as shown in FIG. 7 .

In this case, similar to that described with reference to FIG. 5 , the second direction pitch 12x is larger than the diameter 12d of each of the phase change materials, and the first direction pitch 12y is the second direction pitch ( 12x), and more preferably, the first direction pitch 12y is about 1.5 to 3 times the second direction pitch 12x.

When the phase change material has such a pitch and is arranged in a honeycomb structure, it is possible to increase the length of the actual aerosol airflow path from the upstream end to the downstream end of the cooling structure while maintaining an appropriate level of suction resistance. can be further maximized.

Hereinafter, the configuration of the present invention and its effects will be described in more detail through Examples and Comparative Examples. However, these examples are for explaining the present invention in more detail, and the scope of the present invention is not limited to these examples.

Comparative Example 1

For the example, a heated cigarette having a structure of a smoking material part, a support structure, a cooling structure and a mouthpiece part like the smoking article 100 shown in FIG. of cellulose acetate (CA) tube filter was used, and a CA tube filter with an inner diameter of 4.2 mm was used as the cooling structure. As for the mouthpiece, a TJNS (Transfer Jet Nozzle System) filter in which about 6 mg of menthol fragrance is flavored was used.

Comparative Example 2

A heated cigarette was prepared in the same manner as in Comparative Example 1, except that the cooling structure was used as a polylactic acid (PLA) woven material.

Example 1

A cooling structure having about 50% porosity prepared by forming a phase change material pattern using a material in which about 50% by weight of fructose and about 50% by weight of glucose are mixed on a cellulose-based base sheet and winding it is used. Except for, the same heated cigarette as in Comparative Example 1 was prepared. Specifically, the phase change material pattern is arranged in a matrix structure as shown in FIG. 5, the first direction pitch 12y is about 2 mm, the second direction pitch 12x is about 1.5 mm, and the height of each phase change material 12t was formed under the condition of about 1 mm and a diameter 12d of each phase change material of about 0.7 mm.

Example 2

A heated cigarette similar to Example 1 was prepared, except that a phase change material pattern was formed using a material in which about 30% by weight of fructose, about 40% by weight of galactose, and about 30% by weight of sugar were mixed.

Example 3

A heated cigarette similar to Example 2 was prepared, except that the phase change material pattern was arranged in a honeycomb structure as shown in FIG. 7 . The first direction pitch 12y is about 2.5 mm, the second direction pitch 12x is about 1.5 mm, the height 12t of each phase change material is about 1 mm, and the diameter 12d of each phase change material is about 0.7 mm. was formed under the condition of

Experimental Example: Smoking Sensory Evaluation of Cigarettes

In order to confirm the sensory characteristics of each comparative example and each example, the taste intensity, sucking property, mainstream smoke sensation, atomization amount, irritation, and harmonious taste of the cigarettes according to Comparative Examples 1 to 2 and Examples 1 to 3, which differed only in the cooling structure application configuration, , and sensory evaluations for sweetness satisfaction with mainstream smoke and overall smoking satisfaction were conducted, and the results are shown in Table 1. The sensory evaluation was conducted for 18 evaluation panel members using cigarettes for each Example 4 weeks after manufacture, and a total score of 7 was used as the standard.

On the other hand, although not included in this experimental example, relatively poor suckability satisfaction and cooling lasting performance were observed in the case in which the first direction pitch 12y is smaller than the second direction pitch 12x, and the height of the phase change material In the case where (12t) is smaller than the diameter (12d) of the phase change material, deviations for each individual cigarette occurred due to partial tilting or agglomeration in the winding process of the cooling sheet 10, and thus were excluded from Table 1 below.

division Comparative Example 1 Comparative Example 2 Example 1 Example 2 Example 3 taste intensity 4.1 4.2 3.9 4.2 4.0 suckability
satisfaction 4.3 3.8 4.5 4.5 4.6 mainstream smoke
heat sensitivity 5.1 4.6 3.8 3.9 3.5 mainstream smoke
Cooling Persistence 3.1 3.3 4.7 5.5 5.8 negligible amount 4.8 4.7 4.6 4.7 4.3 pepper 4.4 4.5 4.1 4.2 4.0 harmony 5.1 5.0 4.9 5.3 4.9 mainstream smoke
Sweetness Satisfaction 3.8 3.9 5.1 5.0 5.0 Overall
Smoking Satisfaction 4.9 5.0 5.2 5.5 5.4

Referring to Table 1, in all of Examples and Comparative Examples, there was no significant difference in taste strength, atomization amount, and harmonious taste characteristics, but in all Examples 1 to 3 to which the cooling structure of the present invention was applied, Comparative Example Compared to 1 and 2, superior suckability satisfaction, mainstream smoking intensity, stimulation, and overall smoking satisfaction characteristics were shown, and in particular, it was confirmed that mainstream smoke persistence and mainstream smoke sweetness satisfaction characteristics were significantly superior to those of Comparative Examples. Sensory characteristics for each example In the case of Example 1, although similar to Examples 2 and 3, the effect of improving suckability and reducing heat intensity was shown, but showed slightly lower mainstream smoke cooling continuity characteristics compared to Examples 2 and 3, which was employed in the phase change material pattern. It was judged to be due to the difference in the materials used.

In the case of Example 2, the best harmonious taste and overall smoking satisfaction characteristics were exhibited, and in the case of Example 3, although the amount of atomization was slightly lowered compared to other examples, it can be confirmed that it has the best effect of reducing heat intensity and cooling lasting characteristics.

Although not included in the sensory evaluation items of Table 1, it was confirmed that in Examples 1 to 3, the central portion of the mouthpiece was relieved compared to Comparative Examples 1 and 2, and through this, it was found that the dispersion effect of mainstream smoke was also excellent.

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.

10: cooling sheet 11: base sheet 12: phase change material
100: smoking article 110: smoking material part
120: support structure 130: cooling structure
140: mouthpiece 150: wrapper

Claims (12)

A cooling structure for smoking articles, comprising:
A base sheet having a first surface extending on a plane formed by an up-and-down direction (hereinafter, referred to as a first direction) of a smoking article and a second direction perpendicular to the first direction, and a second surface opposite to the first surface ; and
It is formed as a cooling sheet including; a plurality of phase change material patterns in which phase change materials are regularly patterned on the first surface of the base sheet,
Each of the plurality of phase change material patterns is formed in a truncated cone shape on the first surface of the base sheet,
The plurality of phase change material patterns are arranged in a matrix structure on the first surface of the base sheet.
The method of claim 1,
wherein the cooling structure is formed by rolling or clamping the cooling sheet in the first direction as an axis and in the second direction.
3. The method of claim 2,
When the cooling structure is formed by rolling the cooling sheet,
A lower end of each of the phase change materials is in contact with the first surface of the base sheet and supports the base sheet, and an upper end of each of the phase change materials is in contact with the second surface of the base sheet and is in contact with the base sheet A cooling structure for smoking articles, characterized in that it supports the.
The method of claim 1,
The base sheet is a cellulose sheet,
The cooling structure for smoking articles, characterized in that the phase change materials are composed of a material containing sugars.
5. The method of claim 4,
The phase change material is a cooling structure for a smoking article, characterized in that it is composed of a material comprising at least one of fructose, glucose, maltose, galactose, sugar and mannitol.
6. The method of claim 5,
the base sheet includes an upstream first area and a second area located downstream of the first area;
The cooling structure for a smoking article, characterized in that first phase change materials are formed in the first region and second phase change materials having a composition different from that of the first phase change materials are formed in the second region.
The method of claim 1,
The base sheet extends 5 mm to 20 mm in the first direction and 50 mm to 300 mm in the second direction, the cooling structure for smoking articles.
The method of claim 1,
The cooling structure for a smoking article, characterized in that it has a porosity of 40% to 80% in the first direction.
delete The method of claim 1,
Among the phase change materials, a pitch in a first direction between phase change materials adjacent to each other in the first direction is greater than a pitch in a second direction between phase change materials adjacent to each other in the second direction. cooling structure.
smoking material department;
a cooling structure located downstream of the smoking material part; and
and a mouthpiece located downstream of the cooling structure,
The cooling structure is formed by winding a cooling sheet including a plurality of phase change material patterns in which phase change materials are regularly patterned on a base sheet,
Each of the plurality of phase change material patterns is formed in a truncated cone shape on one surface of the base sheet,
and a cooling structure in which the plurality of phase change material patterns are arranged in a matrix structure on one surface of the base sheet.
12. The method of claim 11,
Smoking article including a cooling structure, characterized in that it further comprises a support structure having one end in contact with the smoking material part downstream of the smoking material part and in contact with the cooling structure and the other end opposite to the one end upstream of the cooling structure. .

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