JP7333484B2 - Flavor-generating article - Google Patents

Description

The present invention relates to flavor generating articles.

Conventionally, flavor-generating articles for inhaling flavor or the like without burning materials are known (for example, Patent Literature 1 and Patent Literature 2). Such a flavor generating article has a flavor source containing tobacco containing a volatile component, and can be directly heated from inside the flavor source by inserting a heater or the like inside the flavor source.

WO2020/002165 International Publication No. 2020/007879

So-called internally heated heating devices, in which the flavor source is internally heated by a heater such as a heating blade or heating pin or a susceptor, can directly heat the flavor source to a high temperature. However, in order to heat the outer circumference of the flavor source to a high temperature, the heat may be radiated from the outer circumference of the flavor source in contact with the device, so the heating efficiency is not very good. In order to efficiently heat the flavor source with such an internal heating type heating device and deliver the aerosol source contained in the flavor source to the mouthpiece side, the direction and density of the tobacco material inside the flavor source must be controlled by the heater. inserted and properly maintained. However, if the filling amount of the tobacco material before the heater is inserted is reduced in order to achieve this, the hardness of the flavor source cannot be maintained, resulting in poor rolling or tipping during the production of the flavor-generating article. there is a risk of On the other hand, increasing the fill amount to prevent poor rolling or tipping will make it difficult for the heater to insert into the flavor source when inserting the flavor generating article into the heating device.

SUMMARY OF THE INVENTION It is an object of the present invention to improve the firmness of the flavor source-containing portion of a flavor generating article without increasing the fill level.

According to a first aspect, a flavor generating article is provided. The flavor generating article has a first portion and a second portion longitudinally adjacent the first portion. The first portion has a flavor source containing tobacco, an inner wrapping paper around which the flavor source is wrapped, and an outer wrapping paper around which the outer circumference of the inner wrapping paper is wrapped. The inner wrapping paper is thicker than the outer wrapping paper and has a plurality of grooves along the longitudinal direction on at least either its inner or outer surface. At least one of the plurality of grooves has a dam portion provided inside the groove.

According to the first mode, since the flavor source is wrapped with the inner wrapping paper that is thicker than the outer wrapping paper, the strength of the first portion can be improved without increasing the filling amount of the flavor source. In other words, while the strength of the first portion generally increases as the volumetric filling rate increases, the strength of the first portion can be improved by the inner wrapping paper. Therefore, the filling amount of the flavor source can be widened, and the degree of freedom in design can be improved. Specifically, the filling amount of the flavor source can be changed according to the desired taste. Also, the inner wrapping paper has a plurality of grooves on at least one of its inner surface or outer surface. If the groove is, for example, half-cut or debossed, the inner wrapping paper can be easily folded along the groove when the flavor source is wrapped around the inner wrapping paper. As a result, the inner wrapping paper can be made of a material having a certain degree of rigidity, such as cardboard, and the strength of the first portion can be improved. Furthermore, when the grooves are formed on the inner surface of the inner wrapping paper, even if a force is applied in the direction (radial direction) to crush the first portion, the plurality of half-cuts or debosses are deformed so as to be crushed, defining the half-cuts or debosses. Since the inner surfaces of the inner wrapping paper come into contact with each other and repel each other, the shape of the first portion is easily maintained. Further, by arranging the dam portion in the groove, the groove is less likely to be crushed, and the strength of the first portion can be improved. Further, according to the first embodiment, the amount of air passing through the groove can be reduced by the dam portion. As a result, when the user inhales the flavor-generating article, the amount of air passing through the inside of the flavor source can be increased, and the amount of flavor and/or aerosol delivered from the flavor source can be increased. Therefore, according to the first embodiment, the strength of the first portion can be improved without increasing the filling amount of the flavor source, so that the density of the flavor source can be easily increased by inserting a heater for internal heating. It is possible to achieve a strength of the first portion that allows the first portion and the second portion to be easily wrapped, for example, with tipping paper.

A second aspect is characterized in that, in the first aspect, each of the plurality of grooves has at least one dam portion.

According to the second aspect, the strength of the first portion can be further improved, and the amount of air passing through each of the plurality of grooves can be reduced. As a result, when the user inhales the flavor-generating article, the amount of air passing through the inside of the flavor source can be further increased, and the amount of flavor and/or aerosol delivered from the flavor source can be increased.

A third embodiment is characterized in that, in the second embodiment, the dam portion of each of the plurality of grooves is arranged at a different position in the longitudinal direction from the dam portion provided in the adjacent groove. .

According to the third aspect, each of the dam portions is arranged dispersedly in the longitudinal direction, so that the strength in a wider range of the first portion can be improved.

A fourth embodiment is, in the second or third embodiment, the dam portion closest to the second portion in the longitudinal direction and the dam portion closest to the second portion in the longitudinal direction among the dam portions of each of the plurality of grooves. The gist is that the distance in the longitudinal direction from the dam portion farther from the two portions is 50% or more and 90% or less of the length of the flavor source in the longitudinal direction.

According to the fourth aspect, each of the dam portions is arranged dispersedly in the longitudinal direction, so that the strength in a wider range of the first portion can be improved. If the distance is less than 50% of the length of the flavor source in the longitudinal direction, the strength of the first portion in the longitudinal direction is uneven. When the above distance is more than 90% of the length in the longitudinal direction of the flavor source, the rod, which is the raw material of the flavor-generating article, is cut at a position including the dam portion, and the dam portion is crushed, thereby reducing the function of the dam portion ( reduction of air and improvement in strength of the first portion). However, even if the dam portion is cut when the rod is cut, the function of the dam portion will not be impaired if the shape of the dam portion remains in the groove while being maintained.

A fifth embodiment is any one of the first to fourth embodiments, wherein the plurality of grooves includes a plurality of first grooves extending along the longitudinal direction on the inner surface of the inner wrapping paper, and the dam portion includes the plurality of and a first dam portion provided inside the first groove of the.

According to the fifth aspect, since a plurality of first grooves are provided on the inner surface of the inner wrapping paper, the gaps inside the inner wrapping paper are reduced by the tobacco entering the first grooves, thereby improving the strength of the first portion. can be done. Further, according to the fifth embodiment, the first dam portion is arranged in the first groove, so that the first groove is less likely to be crushed, and the strength of the first portion can be improved. Further, according to the fifth aspect, the amount of air passing through the first groove can be reduced by the first dam portion. As a result, when a user inhales the flavor-generating article, an increased amount of air may pass near the center of the flavor source, which may increase the delivery of flavor and/or aerosol generated from the flavor source.

A sixth aspect is characterized in that, in the fifth aspect, the width of the plurality of first grooves in a state in which the flavor source is wrapped in the inner wrapping paper is 0.5 mm or more and 2.0 mm or less.

According to the sixth mode, tobacco can easily enter the first groove. When the width of the first groove is less than 0.5 mm, it becomes difficult for tobacco to enter. Further, when the width of the first groove exceeds 2.0 mm, the width of the first groove is too large, and the strength of the first portion may decrease compared to when the width of the first groove is within the above range. be.

A seventh aspect is characterized in that, in the fifth or sixth aspect, the depth of the plurality of first grooves is 0.1 mm or more and 1.5 mm or less.

According to the seventh mode, tobacco can easily enter the first groove. If the depth of the first groove is less than 0.1 mm, it becomes difficult for tobacco to enter. Further, when the width of the first groove is more than 2.0 mm, the depth of the first groove is too large, and the strength of the first portion is lowered as compared with the case where the depth of the first groove is within the above range. There is fear.

An eighth aspect is characterized in that, in any one of the fifth to seventh aspects, the flavor source includes strand-shaped tobacco arranged in the longitudinal direction.

According to the eighth embodiment, since the tobacco is arranged in the longitudinal direction in a strand shape, the tobacco easily enters the first groove. The strength of one portion can be further improved. In this specification, the term “longitudinal direction” includes a direction inclined within 20° with respect to the longitudinal direction of the first portion.

A ninth aspect is characterized in that, in the eighth aspect, the width of the strand-shaped tobacco in a direction perpendicular to the longitudinal direction is 0.5 mm or more and 2.0 mm or less.

According to the ninth form, the strand-shaped tobacco can easily enter into the first groove having appropriate width and depth.

A tenth aspect is characterized in that, in the eighth aspect or the ninth aspect, the thickness of the strand-shaped tobacco in a direction orthogonal to the longitudinal direction is 0.1 mm or more and 0.5 mm or less.

According to the tenth form, the strand-shaped tobacco can easily enter into the first groove having appropriate width and depth.

According to an eleventh embodiment, in any one of the first to tenth embodiments, the plurality of grooves includes a plurality of second grooves along the longitudinal direction on the outer surface of the inner wrapping paper, and the dam portion includes the plurality of wherein the flavor generating article has a gap corresponding to the second groove between the outer surface of the inner wrapping paper and the inner surface of the outer wrapping paper. is the gist.

According to the eleventh form, since there is a gap between the outer surface of the inner wrapping paper and the inner surface of the outer wrapping paper, when the flavor generating article is heated from the inside, the heat of the flavor source is suppressed from being transferred to the outside. can be done. As a result, the flavor-generating article is efficiently heated, so that the amount of electric power for heating the flavor source can be suppressed, or the time for heating the flavor source to a predetermined temperature can be shortened. Furthermore, the heat transfer to the device for heating the flavor generating article is reduced, and the temperature rise of the device is suppressed. Further, if the second groove is half-cut or debossed, for example, the inner wrapping paper can be easily folded along the half-cut or debossed portion when the flavor source is wrapped around the inner wrapping paper. As a result, the inner wrapping paper can be made of a material having a certain degree of rigidity, such as cardboard, and the strength of the first portion can be improved. In addition, since the second dam portion is arranged in the second groove, the second groove is less likely to be crushed, and the strength of the first portion can be improved. Further, according to the eleventh form, the amount of air passing through the second groove can be reduced by the second dam portion. As a result, when the user inhales the flavor-generating article, the amount of air passing through the inside of the flavor source can be increased, and the amount of flavor and/or aerosol delivered from the flavor source can be increased.

A twelfth embodiment is the eleventh embodiment, wherein the second portion has a hollow member arranged on a side adjacent to the first portion, and the plurality of grooves of the inner wrapping paper are arranged in the longitudinal direction of the inner wrapping paper. said hollow member having a hollow channel and a fill layer defining said hollow channel, said fill layer of said hollow member proximate ends of said plurality of grooves. or arranged to close the ends of the plurality of grooves.

According to the twelfth form, since the filling layer of the hollow member is arranged so as to be close to or close to the end of the groove, the amount of air passing through the groove can be reduced. As a result, when the user inhales the flavor-generating article, the amount of air passing through the inside of the flavor source can be increased, and the amount of flavor and/or aerosol delivered from the flavor source can be increased.

A thirteenth aspect is characterized in that, in any one of the first to twelfth aspects, the inner wrapping paper has a corrugated cross-sectional shape in a cross section orthogonal to the longitudinal direction.

According to the thirteenth form, since the inner wrapping paper is corrugated paper, the strength of the first portion in the longitudinal direction and the lateral direction can be improved. In this case, when the flavor source is wrapped with corrugated paper, the concave portion located on the inner surface corresponds to the first groove, and the concave portion located on the outer surface corresponds to the second groove.

A fourteenth aspect is characterized in that, in any one of the first to thirteenth aspects, the inner wrapping paper has a basis weight of 40 g/m ² or more and 150 g/m ² or less.

1 is a schematic side cross-sectional view of a heating system including a flavor generating article according to the present embodiments; FIG. 2 is an enlarged view of the chamber shown in FIG. 1; FIG. FIG. 3 is a cross-sectional view showing an example of a cross-sectional shape of a chamber taken along arrow 3-3 shown in FIG. 2; FIG. 3 is a cross-sectional view showing an example of a cross-sectional shape of a chamber taken along arrow 3-3 shown in FIG. 2; FIG. 3 is a cross-sectional view showing an example of a cross-sectional shape of a chamber taken along arrow 3-3 shown in FIG. 2; 1 is a cross-sectional view of a flavor generating article; FIG. It is an exploded perspective view of a base material part. It is a perspective view of inner wrapping paper. It is the side view which looked at the inner wrapping paper from the longitudinal direction. It is sectional drawing orthogonal to the longitudinal direction of a base-material part. FIG. 11 is a perspective view of an inner wrapping paper according to another example; FIG. 9 is a side view of the inner wrapping paper shown in FIG. 8 as seen from the longitudinal direction; FIG. 11 is a cross-sectional view orthogonal to the longitudinal direction of a base member according to another example; FIG. 11 is a perspective view of an inner wrapping paper according to still another example; FIG. 12B is a side view of the inner wrapping paper shown in FIG. 12A as seen from the longitudinal direction;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings described below, the same or corresponding components are denoted by the same reference numerals, and duplicate descriptions are omitted. In this specification, the term "longitudinal direction" refers to the longitudinal direction of the flavor-generating article, in other words, the direction in which the flavor-generating article is inserted into the heating device. Moreover, in this specification, the term "transverse direction" refers to a direction perpendicular to the longitudinal direction.

FIG. 1 is a schematic side cross-sectional view of a heating system including a flavor generating article according to the present embodiment. A heating system 10 according to this embodiment has a flavor generating article 100 and a heating device 20 . Heating device 20 is preferably a portable or handheld device. As shown in FIG. 1 , the heating device 20 has a battery 22 , a PCB (Printed Circuit Board) 24 , a housing 30 and a heating unit 40 . Flavor-generating article 100 has a smokable substance 102 including a flavor source that is heated by heating device 20 . A detailed configuration of the flavor-generating article 100 will be described later.

Heating device 20 is configured to atomize smokable substance 102 contained in flavor-generating article 100 . The smokable material 102 forms part of the flavor-generating article 100, for example in the shape of a longitudinal column. Flavor-generating article 100 can be, for example, a tobacco stick in which smokable material 102 comprises tobacco. Battery 22 stores power for use by heating device 20 . For example, battery 22 is a lithium ion battery. Battery 22 may be rechargeable by an external power source.

The PCB 24 is composed of a CPU, memory, etc., and controls the operation of the heating device 20 . For example, the PCB 24 starts heating the smokable substance 102 in response to user manipulation of an input device, such as a push button or slide switch (not shown), and stops heating the smokable substance 102 after a certain period of time. The PCB 24 may terminate heating of the smokable material 102 even before a certain amount of time has elapsed since the start of heating of the smokable material 102 when the number of puffs by the user exceeds a certain value. For example, a puff action is detected by a sensor (not shown).

Alternatively, the PCB 24 may initiate heating of the smokable material 102 upon initiation of the puffing action and terminate heating of the smokable material 102 upon termination of the puffing action. The PCB 24 may terminate heating of the smokable material 102 even before the end of the puffing action if a certain amount of time has passed since the beginning of the puffing action. In this embodiment, PCB 24 is positioned between battery 22 and heating unit 40 .

In the illustrated example, the heating device 20 is configured to receive a stick-shaped flavor generating article 100 . Also, as shown, battery 22 , PCB 24 , and heating unit 40 may be arranged in the direction that flavor generating article 100 is inserted into heating device 20 . The housing 30 is a housing that houses the battery 22 , PCB 24 and heating unit 40 . The housing 30 has an air inlet 30a for supplying air to the heating unit 40, and an insertion end 32 having an opening 34 in which a chamber to be described later is accommodated.

The heating unit 40 has a heating section 42 and a chamber 50 . The heating portion 42 has a shape that allows it to be inserted into the smokable substance 102 and is configured to heat the smokable substance 102 from the inside. Specifically, the heating portion 42 has a blade portion 42 a that is inserted into the smokable substance 102 and a holder portion 42 b for securing the heating portion 42 to the housing 30 . Blade portion 42 a is the portion that contacts smokable substance 102 when flavor-generating article 100 is positioned at a desired position within chamber 50 . The blade portion 42a can have, for example, a resin substrate and a heating track formed on its surface. A lead wire 43 for supplying power from the battery 22 to the blade portion 42a is connected to the blade portion 42a. The heating section 42 may have a susceptor that is induction-heated by an induction coil. In that case, the smokable substance 102 is heated by inserting the susceptor inside the smokable substance 102 and inductively heating it with an induction coil (not shown).

FIG. 2 is an enlarged view of chamber 50 shown in FIG. As shown in FIG. 2, chamber 50 has an opening 51 that receives flavor generating article 100 . Chamber 50 has a side wall 52 surrounding smokable material 102 and a bottom wall 54 against which an end of smokable material 102 abuts. Bottom wall 54 has an opening 54a for supplying air to the end of smokable material 102 . Air entering from air inlet 30a of housing 30 due to the user's inhalation of flavor-generating article 100 reaches smokable substance 102 through opening 54a of chamber 50 and is delivered into the user's mouth along with the aerosol or flavor generated from smokable substance 102. be done.

Also, the heating device 20 may be provided with a first gap S1 between the housing 30 and the outer peripheral surface of the side wall 52 of the chamber 50 . This can suppress or reduce heat transfer from the blade portion 42a and the heated smokable substance 102 to the housing 30 through the first gap S1. Therefore, the temperature rise of the surface of the housing 30 can be reduced, and heat removal from the smokable substance 102 by the chamber 50 can be reduced. In particular, since it is possible to reduce the heat taken from the outer peripheral side of the smokable substance 102, it is possible to generate a more sufficient aerosol from the smokable substance 102 even in the second half of the smoking motion. Moreover, since the heat transfer to the chamber 50 can also be suppressed or reduced, the heat transfer to the inside of the heating device 20 via the chamber 50 can also be reduced.

The illustrated chamber 50 may be configured to be movable relative to the housing 30 along the direction of insertion of the flavor generating article 100 . Specifically, the side wall 52 of the chamber 50 may not be fixed to the housing 30 and may be configured to be slidable relative to the opening 34 of the housing 30 . Although not shown, the heating device 20 is provided with operating means such as a lever for moving the chamber 50 along the insertion direction of the flavor generating article 100, thereby moving the chamber 50 connected to the operating means in the direction of inserting the flavor generating article 100. be able to. Thus, after use of the flavor-generating article 100 , with the smokable substance 102 disposed within the chamber 50 , the chamber 50 is moved toward the insertion end 32 so that the smokable substance 102 , such as tobacco, is flavored. The smokable substance 102 can be removed from the blade portion 42a while preventing or reducing spillage from the generating article 100. FIG.

Next, the cross-sectional shape of the chamber 50 will be described. 3A to 3C are cross-sectional views showing examples of cross-sectional shapes of the chamber 50 taken along line 3-3 shown in FIG. As shown in FIG. 3A, the side wall 52 of the chamber 50 has a retaining portion 56a that contacts the outer peripheral surface of the smokable substance 102 to retain the smokable substance 102, and a spacing portion 56b that is spaced apart from the smokable substance 102. . The holding portions 56 a and the spacing portions 56 b are alternately arranged along the circumferential direction of the chamber 50 . The holding portion 56a and the separating portion 56b are connected by a flat wall surface, and the cross section of the chamber 50 is formed in a star shape.

In the example shown in FIG. 3B, the chamber 50 has a substantially circular cross section, and a plurality of substantially plate-shaped holding members 58 are formed on the inner surface of the side wall 52 of the chamber 50 . A plurality of holding members 58 may be formed on the inner surface of the side wall 52 of the chamber 50 at regular intervals along the circumferential direction. Retaining member 58 has one end connected to side wall 52 and another end for contacting and retaining smokable substance 102 .

According to the example chamber 50 shown in FIGS. 3A and 3B, a second gap S2 is provided between the inner peripheral surface of the side wall 52 of the chamber 50 and the smokable substance 102 of the flavor generating article 100 contained in the chamber 50. be done. By providing the second gap S2, an air insulation layer is formed around the smokable substance 102, and the heat generated from the blade portion 42a of the heating part 42 is transferred to the chamber 50 and the housing 30 through the second gap S2. can be suppressed or reduced. Therefore, the temperature rise of the surface of the housing 30 can be reduced, and heat removal from the smokable substance 102 by the chamber 50 can be reduced. In particular, heat loss from the outer peripheral side of smokable material 102 can be reduced, so that aerosol or flavor can be generated more fully from smokable material 102 even in the second half of the smoking motion.

In the example shown in FIG. 3C, side walls 52 of chamber 50 have inner and outer walls 52a and 52b of generally circular cross-section. A space defined by the inner wall 52a and the outer wall 52b is sealed, and a sodium-based heat insulating material 57, for example, can be enclosed in the space. The inner diameter of the inner wall 52a is substantially the same as the inner diameter of the smokable substance 102, and substantially the entire inner surface of the inner wall 52a functions as a retaining surface to retain the smokable substance 102.

The cross-sectional shape of the side wall 52 of the chamber 50 is not limited to the shapes shown in FIGS. 3A to 3C, and may be any shape.

Next, the configuration of the flavor generating article 100 according to this embodiment will be described. FIG. 4 is a cross-sectional view of the flavor generating article 100. As shown in FIG. In the embodiment shown in FIG. 4, the flavor generating article 100 includes a flavor source 111, an inner wrapping paper 120 that wraps the flavor source 111, and a first wrapping paper 112 (outer wrapping paper) that wraps around the outer circumference of the inner wrapping paper 120. and a base portion 100A (corresponding to an example of the first portion), and a mouthpiece portion 100B (corresponding to an example of a second portion) forming an end opposite to the base portion 100A. have) and The mouthpiece portion 100B is arranged adjacent to the base portion 100A in the longitudinal direction. The inner wrapping paper 120 is preferably made of a nonflammable material at 200°C. Also, the thermal conductivity of the inner wrapping paper 120 is preferably 0.3 w/(m·K) or less. In this case, the heat of the flavor source 111 is less likely to be transmitted to the outside of the flavor generating article 100, and the heating unit 42 can heat the flavor source 111 efficiently. The thermal conductivity of the inner wrapping paper 120 can be measured, for example, with a rapid thermal conductivity meter QTM-500 manufactured by Kyoto Electronics Industry Co., Ltd.

The smokable material 102 shown in Figures 1 and 2 includes a flavor source 111 and may also include an aerosol source to improve smoking palatability. The base material portion 100A and the mouthpiece portion 100B are connected by a second wrapping paper 113 different from the first wrapping paper 112 . However, it is also possible to omit the second wrapping paper 113 and use the first wrapping paper 112 to connect the base portion 100A and the mouthpiece portion 100B.

The mouthpiece portion 100B in FIG. 4 has a hollow segment 116 (corresponding to an example of a hollow member), a filter portion 115, and a paper tube portion 114 arranged between the hollow segment 116 and the filter portion 115. . That is, the hollow segment 116 is located at the end adjacent to the base portion 100A in the mouthpiece portion 100B. Hollow segment 116 has, for example, one or more hollow channels 116a and a fill layer 116b that defines hollow channels 116a. Since the packing layer 116b has a high fiber packing density, air, flavor, or aerosol will flow mostly through the hollow channels 116a and hardly through the packing layer 116b when inhaled. In the flavor-generating article 100, shortening the length of the filter portion 115 and replacing it with the hollow segment 116 increases the delivery amount of flavor or aerosol when it is desired to reduce the reduction of the aerosol component in the filter portion 115 due to filtration. effective for The flavor-generating article 100 may also include paper filters, or may combine some of the hollow segments 116, acetate filters, or paper filters.

Although the mouthpiece 100B in FIG. 4 is composed of three segments, in the present embodiment, the mouthpiece 100B may be composed of one or two segments, or four or more segments. It may be composed of segments. For example, the hollow segment 116 may be omitted, and the paper tube portion 114 and the filter portion 115 may be arranged adjacent to each other to form the mouthpiece portion 100B. Further, the paper tube portion 114 may be filled with a cooling member such as a phase-changing material such as polylactic acid.

In the embodiment shown in FIG. 4, the longitudinal length of the flavor generating article 100 is preferably 40 mm to 90 mm, more preferably 50 mm to 75 mm, even more preferably 50 mm to 60 mm. The circumference of the flavor generating article 100 is preferably 15 mm to 25 mm, more preferably 17 mm to 24 mm, even more preferably 20 mm to 23 mm. In addition, the length of the base material portion 100A in the flavor generating article 100 is preferably 10 mm to 20 mm, the length of the first wrapping paper 112 is preferably 10 mm to 20 mm, the length of the hollow segment 116 is preferably 5 mm to 10 mm, and the paper The length of the tube portion 114 is preferably 10 mm to 40 mm, and the length of the filter portion 115 is preferably 5 mm to 20 mm, but the length of each of these segments can be changed as appropriate depending on manufacturing suitability, required quality, etc. can. Further, as shown in the figure, the members on the downstream side of the flavor source 111 may be integrally connected to the flavor source 111 by a second wrapping paper 113, or these downstream members may be provided separately and connected to the first wrapping paper. may be integrally connected to the flavor source 111 by .

In this embodiment, the flavor source 111 of the flavor generating article 100 may contain an aerosol source that is heated at a predetermined temperature to generate an aerosol. The type of aerosol source is not particularly limited, and extracts from various natural products and/or constituents thereof can be selected depending on the application. The aerosol source is preferably a polyhydric alcohol and can be, for example, glycerin, propylene glycol, triacetin, 1,3-butanediol, and mixtures thereof. The content of the aerosol source in the flavor source 111 is not particularly limited, and is usually 5% by weight or more, preferably 10% by weight or more, from the viewpoint of sufficiently generating an aerosol and imparting a good flavor and taste. It is usually 50% by weight or less, preferably 20% by weight or less.

The flavor source 111 of the flavor generating article 100 in this embodiment is preferably constructed by arranging strands of tobacco in the longitudinal direction of the flavor generating article 100 . It is preferable that 50% by weight or more of the strand-shaped tobacco contained in the flavor source 111 be arranged in the longitudinal direction. Strand-shaped tobacco can be formed, for example, by pulverizing dried tobacco leaves to have an average particle size of about 20 μm to 200 μm, processing them into sheets, and cutting them into strands. As used herein, the term "strand" means a cord or strip having a width equal to or greater than the thickness of the sheet-like tobacco leaves. The tobacco material is not particularly limited, and known materials such as lamina and backbone can be used. The range of the content of the flavor source 111 in the flavor generating article 100 is, for example, 200 mg to 400 mg, preferably 250 mg to 320 mg, when the circumference is 22 mm and the length is 20 mm. The moisture content of the flavor source 111 is, for example, 8% to 18% by weight, preferably 10% to 16% by weight. Such a water content suppresses the occurrence of winding stains, and improves the winding aptitude at the time of manufacturing the base material portion 100A. For example, dried tobacco leaves cut into pieces having a width of 0.8 mm to 1.2 mm may be used. Also, the flavor source 111 may contain one or more flavors. The type of flavoring agent is not particularly limited, but menthol is preferable from the viewpoint of imparting a good smoking taste.

In this embodiment, the first wrapping paper 112 and the second wrapping paper 113 of the flavor generating article 100 can be made from base paper having a basis weight of, for example, 20 gsm to 65 gsm, preferably 25 gsm to 45 gsm. The thickness of the first wrapping paper 112 and the second wrapping paper 113 is not particularly limited, but is 10 μm to 100 μm, preferably 20 μm to 75 μm, from the viewpoint of rigidity, air permeability, and ease of adjustment during paper manufacturing. , more preferably 30 μm to 50 μm.

In this embodiment, the first wrapping paper 112 and the second wrapping paper 113 of the flavor generating article 100 may include fillers. The content of the filler can be 10% to 60% by weight, preferably 15% to 45% by weight, based on the total weight of the first wrapping paper 112 and the second wrapping paper 113 . In this embodiment, it is preferred that the filler be 15% to 45% by weight for the preferred basis weight range (25 gsm to 45 gsm). Examples of fillers that can be used include calcium carbonate, titanium dioxide, and kaolin. Paper containing such a filler exhibits a bright white color that is preferable from the viewpoint of appearance when used as wrapping paper for the flavor-generating article 100, and can permanently maintain its whiteness. By including a large amount of such fillers, for example, the ISO whiteness of the wrapping paper can be increased to 83% or higher. Moreover, from the practical viewpoint of using them as the wrapping paper of the flavor generating article 100, the first wrapping paper 112 and the second wrapping paper 113 preferably have a tensile strength of 8 N/15 mm or more. This tensile strength can be increased by lowering the filler content. Specifically, the tensile strength can be increased by making the content of the filler less than the upper limit of the content of the filler shown in each basis weight range exemplified above.

The flavor-generating article 100 of this embodiment includes the inner wrapping paper 120 in order to improve the hardness of the base material portion 100A without increasing the filling amount. FIG. 5 is an exploded perspective view of the base member 100A. 6A is a perspective view of the inner wrapping paper 120. FIG. FIG. 6B is a side view of the inner wrapping paper 120 viewed from the longitudinal direction. FIG. 7 is a cross-sectional view orthogonal to the longitudinal direction of the base material portion 100A. As shown in FIGS. 5 to 7, the inner wrapping paper 120 around which the flavor source 111 is wrapped has a plurality of first grooves 120a along the longitudinal direction on its inner surface. The plurality of first grooves 120a may be partially formed in the longitudinal direction of the inner wrapping paper 120, but preferably extend from one longitudinal end to the other longitudinal end of the inner wrapping paper 120. As shown in FIG. Also, the inner wrapping paper 120 is thicker than the first wrapping paper 112 . In this specification, the terms “inner surface of the inner wrapping paper 120” and “outer surface of the inner wrapping paper 120” refer to a surface corresponding to the inner surface and the outer surface of the inner wrapping paper 120 wrapped with the flavor source 111, respectively. means

The plurality of first grooves 120a in the illustrated example can be half-cut or debossed. Half-cuts or debosses can be formed by notching the surface of the inner wrapping paper 120, cutting a portion of the surface, or compressing the surface. Half-cuts or debosses may also be formed by laser machining. That is, half-cutting or debossing can also be referred to as cutting lines or indentation lines formed on the surface of the inner wrapping paper 120 . As shown in FIG. 7 , in the flavor generating article 100 of this embodiment, at least part of the tobacco constituting the flavor source 111 enters the first grooves 120 a of the inner wrapping paper 120 .

According to the flavor generating article 100 shown in FIGS. 5 to 7, since the inner wrapping paper 120 is thicker than the first wrapping paper 112, the flavor source 111 is wrapped around the base material without increasing the filling amount of the flavor source 111. The strength of 100A can be improved. In other words, while the strength of the base material portion 100A generally increases as the volumetric filling rate increases, the strength of the base material portion 100A can be increased by the inner wrapping paper 120 . Therefore, the filling amount of the flavor source 111 can be widened, and the degree of freedom in design can be improved. Specifically, the filling amount of the flavor source 111 can be changed according to the desired taste. In addition, since the inner wrapping paper 120 has a plurality of half-cut or debossed first grooves 120a on its inner surface, when the inner wrapping paper 120 is wrapped with the flavor source 111, the inner wrapping paper 120 can be pushed along the first grooves 120a. becomes easier to bend. As a result, the inner wrapping paper 120 can be made of a material having a certain degree of rigidity, such as cardboard, and the strength of the base material portion 100A can be improved. The basis weight of the inner wrapping paper 120 is preferably 40 g/m ² or more and 150 g/m ² or less. Furthermore, even if a force is applied in a direction (radial direction) to crush the base material portion 100A, the plurality of half-cuts or debosses are deformed so as to be crushed, and the inner surfaces of the inner wrapping paper 120 defining the half-cuts or debosses come into contact with each other. , the shape of the base portion 100A is easily maintained. Furthermore, the tobacco enters the first groove 120a, thereby reducing the gap inside the inner wrapping paper 120 and improving the strength of the base material portion 100A. In addition, when the tobacco constituting the flavor source 111 is in a strand shape, the tobacco easily enters the first groove 120a, further reducing the gap inside the inner wrapping paper 120 and further improving the strength of the base member 100A. be able to.

Furthermore, the flavor generating article 100 shown in FIGS. 5 to 7 has a first dam portion 130 in which at least one of the plurality of first grooves 120a is provided inside the first groove 120a. The first dam portion 130 may be formed of any material that is difficult or impermeable to air, for example, by curing an adhesive. Also, the plurality of first grooves 120a of the inner wrapping paper 120 can be formed by thermoforming, and the first dam portions 130 correspond to the first grooves 120a and the first dam portions 130 when the first grooves 120a are thermoformed. It may be formed by thermoforming the inner wrapper 120 in a mold that does. The first dam portion 130 is positioned inside the first groove 120a, and is configured to suppress the flow of air in the first groove 120a.

As shown in FIG. 6A, the first dam portion 130 has a top surface 130a and side surfaces 130b. In the illustrated example, the first dam portion 130 is formed such that the angle formed by the top surface 130a and the side surface 130b is approximately a right angle. It may be rounded so as to be chamfered. The first dam portion 130 may have a height that is less than the depth of the first groove 120a, but as shown in FIG. 6B, the first dam portion 130 is at least as deep as the first groove 120a. It preferably has a height and is configured to completely fill a portion of the first groove 120a in the longitudinal direction. More specifically, as shown in FIG. 11B, first dam portion 130 is preferably formed to connect the apexes of adjacent crests that define first groove 120a. Thereby, the air passing through the first groove 120a can be blocked.

According to the flavor generating article 100 shown in FIGS. 5 to 7, the first dam portion 130 can reduce the amount of air passing through the first groove 120a. As a result, it becomes difficult for air to pass through the first grooves 120a, so that when the user inhales the flavor-generating article 100, the amount of air passing near the center of the flavor source 111 can be increased. The resulting flavor and/or aerosol delivery can be increased. Further, by arranging the first dam portion 130 in the first groove 120a, the first groove 120a is less likely to be crushed, and the strength of the base portion 100A can be improved.

Therefore, according to the flavor-generating article 100 of the present embodiment, the strength of the base material portion 100A can be improved without increasing the filling amount of the flavor source 111 . For this reason, while adjusting the density of the flavor source 111 to such an extent that the blade portion 42a for internal heating can be easily inserted, the base portion 100A and the mouthpiece portion 100B are wrapped with the second wrapping paper 113 (tipping paper). The strength of the base material portion 100A to the extent that it can be easily wound can be achieved.

In the flavor generating article 100 shown in FIGS. 5-7, each of the plurality of first grooves 120a preferably has at least one first dam portion 130. As shown in FIG. As a result, the strength of the base material portion 100A can be further improved, and the amount of air passing through each of the plurality of first grooves 120a can be reduced. As a result, when the user inhales the flavor-generating article 100, a greater amount of air may pass near the center of the flavor source 111, increasing the delivery of flavor and/or aerosol generated from the flavor source 111. be able to. In this case, the first dam portion 130 of each of the plurality of first grooves 120a is preferably arranged at a different position in the longitudinal direction from the first dam portion 130 provided in the adjacent first groove 120a. As a result, the first dam portions 130 are arranged separately in the longitudinal direction, so that the strength of the base portion 100A in a wider range can be improved.

Among the first dam portions 130 of each of the plurality of first grooves 120a, the first dam portion 130 closest to the suction port 100B in the longitudinal direction and the first dam portion 130 furthest from the suction port 100B in the longitudinal direction. , the distance L1 (see FIG. 6A) in the longitudinal direction is preferably 50% or more and 90% or less of the length of the flavor source 111 in the longitudinal direction. If the distance L1 is less than 50% of the length of the flavor source 111 in the longitudinal direction, the strength of the base material portion 100A in the longitudinal direction may be uneven. When the distance L1 is more than 90% of the length of the flavor source in the longitudinal direction, the rod, which is the raw material of the flavor-generating article 100, is cut at a position including the first dam portion 130, and the first dam portion 130 is crushed. As a result, the functions of the first dam portion 130 (reduction of air and improvement in strength of the base portion 100A) may be impaired. However, even if the first dam portion 130 is cut when cutting the rod, the function of the first dam portion 130 is not impaired as long as the shape of the first dam portion 130 is maintained and remains in the first groove 120a. .

FIG. 8 is a perspective view of an inner wrapping paper 120 according to another example. FIG. 9 is a side view of the inner wrapping paper 120 shown in FIG. 8 as seen from the longitudinal direction. FIG. 10 is a cross-sectional view perpendicular to the longitudinal direction of a base material portion 100A according to another example. As shown in FIGS. 8 to 10, the inner wrapping paper 120 around which the flavor source 111 is wrapped has, in addition to a plurality of first grooves 120a, a plurality of second grooves 120b along the longitudinal direction on its outer surface. The “outer surface of the inner wrapping paper 120” means the outer surface of the inner wrapping paper 120 when the flavor source 111 is wrapped.

The illustrated inner wrapping paper 120 is obtained by processing a sheet material forming the inner wrapping paper 120 into a corrugated shape, specifically, a triangular wave shape. Therefore, the first groove 120a and the second groove 120b of the illustrated inner wrapping paper correspond to the recesses on the inner surface and the outer surface of the inner wrapping paper 120 formed in a corrugated shape, respectively. The inner wrapping paper 120 shown in FIG. 8 can be manufactured, for example, by passing acetate paper or the like through an embossing roller (corrugated roller) to form a triangular wave pattern.

As shown in FIG. 10 , in the flavor generating article 100 of the present embodiment, at least part of the tobacco forming the flavor source 111 enters the first grooves 120 a of the inner wrapper 120 . 10, the inner wrapping paper 120 of the flavor generating article 100 has a plurality of second grooves 120b, so that a plurality of grooves are formed between the outer surface of the inner wrapping paper 120 and the inner surface of the first wrapping paper 112. It has a gap S3 corresponding to the second groove 120b.

According to the examples shown in FIGS. 8 to 10, since there is a gap S3 between the outer surface of the inner wrapping paper 120 and the inner surface of the first wrapping paper 112, when the flavor generating article 100 is heated from the inside, the flavor source 111 can suppress the heat from being transferred to the outside. As a result, the flavor-generating article 100 is efficiently heated, so that the amount of power required to heat the flavor source 111 can be reduced, or the time required to heat the flavor source 111 to a predetermined temperature can be shortened. Moreover, heat transfer to the heating device 20 that heats the flavor-generating article 100 is reduced, and an increase in the temperature of the heating device 20 is suppressed. Further, the formation of the space S3 allows the inner wrapping paper 120 to be deformed when the blade portion 42a is inserted into the flavor source 111, thereby facilitating the insertion of the blade portion 42a into the flavor source 111. The plurality of second grooves 120b may be partially formed in the longitudinal direction of the inner wrapping paper 120, but preferably extend from one longitudinal end to the other longitudinal end of the inner wrapping paper 120. As shown in FIG. Thereby, the volume of the space S3 corresponding to the second groove 120b can be increased, and the heat insulation effect of the space S3 corresponding to the second groove 120b can be improved.

In addition, since the inner wrapping paper 120 is a corrugated sheet (corrugated paper), the strength of the base material portion 100A in the longitudinal direction and the lateral direction can be improved.

A plurality of second grooves 120b can also be formed by half-cutting or debossing the outer surface of the inner wrapping paper 120 shown in FIGS. Also, only the outer surface of the inner wrapping paper 120 may be half-cut or debossed to form a plurality of second grooves 120b. In these cases as well, the space S3 is formed between the outer surface of the inner wrapping paper 120 and the inner surface of the first wrapping paper 112, so that when the flavor generating article 100 is heated from the inside, the heat of the flavor source 111 is transferred to the outside. can be suppressed from being transmitted to In addition, when the flavor source 111 is wrapped around the inner wrapping paper 120, the inner wrapping paper 120 can be easily folded along the half-cut or deboss. As a result, the inner wrapping paper 120 can be made of a material having a certain degree of rigidity, such as cardboard, and the strength of the base material portion 100A can be improved.

Furthermore, the flavor generating article 100 shown in FIGS. 8 to 10 has a second dam portion 140 in which at least one of the plurality of second grooves 120b is provided inside the second groove 120b. The second dam portion 140 can be formed by recessing a wave-like protrusion from the inner surface of the inner wrapping paper 120 toward the outer surface. Also, the second dam portion 140 may be formed of any material that is difficult or impermeable to air, for example, and may be formed by curing an adhesive, for example. In addition, the plurality of first grooves 120a and second grooves 120b of the inner wrapping paper 120 can be formed by thermoforming, and the second dam portion 140 is formed by thermoforming the first grooves 120a and the second grooves 120b. It can be formed by thermoforming the inner wrapping paper 120 in a mold corresponding to the groove 120a, the second groove 120b, and the second dam portion 140. FIG. The second dam portion 140 is positioned inside the second groove 120b, and is configured to restrict the flow of air in the second groove 120b.

As shown in FIG. 8, the second dam portion 140 has an upper surface 140a and side surfaces 140b. In the illustrated example, the second dam portion 140 is formed such that the angle formed by the top surface 140a and the side surface 140b is substantially a right angle. It may be rounded so as to be chamfered. The second dam portion 140 may have a height that is less than the depth of the second groove 120b, but as shown in FIG. 9, the second dam portion 140 is at least as deep as the second groove 120b. It preferably has a height and is configured to completely fill a portion of the second groove 120b. More specifically, as shown in FIG. 9, the second dam portion 140 is preferably formed to connect the apexes of adjacent crests that define the second groove 120b. Thereby, the air passing through the second groove 120b can be blocked.

According to the flavor generating article 100 shown in FIGS. 8 to 10, the second dam portion 140 can reduce the amount of air passing through the second groove 120b. As a result, it becomes difficult for air to pass through the second groove 120b, so that when the user inhales the flavor-generating article 100, the amount of air passing near the center of the flavor source 111 can be increased. The resulting flavor and/or aerosol delivery can be increased. Further, by arranging the second dam portion 140 in the second groove 120b, the second groove 120b is less likely to be crushed, and the strength of the base portion 100A can be improved.

In the flavor generating article 100 shown in FIGS. 8-10, each of the plurality of second grooves 120b preferably has at least one second dam portion 140. As shown in FIG. As a result, the strength of the base material portion 100A can be further improved, and the amount of air passing through each of the plurality of second grooves 120b can be reduced. As a result, when the user inhales the flavor-generating article 100, the amount of air passing through the interior of the flavor source 111 can be further increased, and the amount of flavor and/or aerosol delivered from the flavor source 111 can be increased. can be done. In this case, the second dam portion 140 of each of the plurality of second grooves 120b is preferably arranged at a position different in the longitudinal direction from the second dam portion 140 provided in the adjacent second groove 120b. As a result, the second dam portions 140 are arranged separately in the longitudinal direction, so that the strength of the base portion 100A can be improved over a wider range.

In addition, among the second dam portions 140 of each of the plurality of second grooves 120b, the second dam portion 140 closest to the suction port 100B in the longitudinal direction and the second dam portion 140 furthest from the suction port 100B in the longitudinal direction. , the distance L2 (see FIG. 8) in the longitudinal direction is preferably 50% or more and 90% or less of the length of the flavor source 111 in the longitudinal direction. If the distance L2 is less than 50% of the length of the flavor source 111 in the longitudinal direction, the strength of the base material portion 100A in the longitudinal direction may be uneven. If the distance L2 is more than 90% of the length of the flavor source in the longitudinal direction, the rod, which is the raw material of the flavor-generating article 100, will be cut at a position including the second dam portion 140, and the second dam portion 140 will be crushed. As a result, the function of the second dam portion 140 (reduction of air and improvement in strength of the base portion 100A) may be impaired. However, even if the second dam portion 140 is cut when the rod is cut, if the shape of the second dam portion 140 is maintained and remains in the second groove 120b, the function of the second dam portion 140 is not impaired. .

In the examples shown in FIGS. 8 to 10, since there is a gap S3 between the inner wrapping paper 120 and the first wrapping paper 112, when the second groove 120b extends from one longitudinal end to the other longitudinal end of the inner wrapping paper 120, The ventilation resistance of the space S3 can be smaller than the ventilation resistance of the air passing through the inside of the inner wrapping paper 120, that is, the flavor source 111. In this case, when the user inhales the flavor-generating article 100, a large amount of air passes through the gap S3, and the flavor or aerosol generated from the flavor source 111 may not be efficiently delivered to the user's mouth. Therefore, in the examples shown in FIGS. 8-10, the filling layer 116b of the hollow segment 116 shown in FIG. may be placed in Thereby, the amount of air passing through the second groove 120b can be reduced. As a result, when the user inhales the flavor-generating article 100, the amount of air passing through the inside of the flavor source 111 can be increased, and the amount of flavor and/or aerosol delivered from the flavor source 111 can be increased. can.

FIG. 11A is a perspective view of inner wrapping paper 120 according to still another example. FIG. 11B is a longitudinal side view of the inner wrapping paper 120 shown in FIG. 11A. The inner wrapping paper 120 shown in FIGS. 11A and 11B is obtained by processing the sheet material forming the inner wrapping paper 120 into a corrugated shape, specifically, a substantially sinusoidal shape. Therefore, the first groove 120a and the second groove 120b of the inner wrapping paper 120 shown in the figure respectively correspond to the concave portion on the inner surface and the concave portion on the outer surface of the inner wrapping paper 120 formed in a corrugated shape. As shown in FIGS. 11A and 11B, the inner wrapping paper 120 of the present embodiment is not limited to the triangular corrugated paper shown in FIGS. 8 and 9, and substantially sinusoidal corrugated paper can be employed. Note that the shape of the wave is not limited to this, and any wave shape can be adopted. The inner wrapping paper 120 shown in FIG. 10 can be manufactured, for example, by passing acetate paper or the like through an embossing roller (corrugated roller) to form a substantially sinusoidal pattern.

In the illustrated example, the inner wrapping paper 120 has a first dam portion 130 and a second dam portion 140 in the first groove 120a and the second groove 120b, respectively. The first dam portion 130 can be formed by recessing a wavy protrusion from the outer surface of the inner wrapping paper 120 toward the inner surface. Similarly, the second dam portion 140 can be formed by recessing a wave-like protrusion from the inner surface of the inner wrapping paper 120 toward the outer surface. Also, the first dam portion 130 and the second dam portion 140 may be formed of any material that is difficult or impermeable to air, for example, and may be formed by curing an adhesive, for example. Also, the plurality of first grooves 120a and second grooves 120b of the inner wrapping paper 120 may be formed by thermoforming, and the first dam portion 130 and the second dam portion 140 may be formed by thermoforming the first grooves 120a and the second grooves 120b. , the inner wrapping paper 120 may be thermoformed in a mold corresponding to the first groove 120a, the second groove 120b, the first dam portion 130, and the second dam portion 140. As shown in FIG.

As shown in FIGS. 11A and 11B, the cross-sectional shape orthogonal to the longitudinal direction of the inner wrapping paper 120 may have a substantially sinusoidal cross-sectional shape. Further, when the inner wrapping paper 120 has the first groove 120a and the second groove, it may have the first dam portion 130 and the second dam portion 140, or the first dam portion 130 or the second dam portion 140 You may have only one of

In the inner wrapping paper 120 described above, the width of the first groove 120a is preferably 0.5 mm or more and 2.0 mm or less. This allows the tobacco to easily enter the first grooves 120a when the tobacco is in the form of strands arranged in the longitudinal direction. When the width of the first groove 120a is less than 0.5 mm, it becomes difficult for the strand-shaped tobacco to enter. As a result, there is a possibility that the filling amount of the flavor source 111 cannot be sufficiently reduced, or that the strength of the base material portion 100A cannot be secured sufficiently. Further, when the width of the first groove 120a exceeds 2.0 mm, the width of the first groove 120a is too large, and the strength of the base portion 100A is reduced compared to when the width of the first groove 120a is within the above range. It is likely to decline. The width of the second groove 120b may also be the same as the width of the first groove 120a.

Moreover, in the inner wrapping paper 120 described above, the depth of the first groove 120a is preferably 0.1 mm or more and 1.5 mm or less. This allows the tobacco to easily enter the first grooves 120a when the tobacco is in the form of strands arranged in the longitudinal direction. If the depth of the first groove 120a is less than 0.1 mm, it becomes difficult for the strand-shaped tobacco to enter. As a result, there is a possibility that the filling amount of the flavor source 111 cannot be sufficiently reduced, or that the strength of the base material portion 100A cannot be secured sufficiently. Further, when the width of the first groove 120a exceeds 2.0 mm, the depth of the first groove 120a is too large, and the depth of the base portion 100A is larger than when the depth of the first groove 120a is within the above range. Strength may decrease. The depth of the second groove 120b may also be the same as the depth of the first groove 120a.

In the flavor source 111 described above, the width of the strand-shaped tobacco in the direction orthogonal to the longitudinal direction is preferably 0.5 mm or more and 2.0 mm or less. This allows the strand-shaped tobacco to easily enter the first groove 120a having an appropriate width and depth.

Moreover, in the flavor source 111 described above, the thickness of the strand-shaped tobacco in the direction orthogonal to the longitudinal direction is preferably 0.1 mm or more and 0.5 mm or less. This allows the strand-shaped tobacco to easily enter the first groove 120a having an appropriate width and depth.

In the flavor generating article 100 described above, when the flavor source 111 is wrapped with the inner wrapping paper 120, it is preferable that one end and the other end of the inner wrapping paper 120 do not overlap. In other words, it is preferable that the inner wrapping paper 120 wraps the flavor source 111 so that one end and the other end of the inner wrapping paper 120 are substantially in contact with each other or have a slight gap between the one end and the other end. This can prevent the cross-sectional shape of the base material portion 100A from being distorted due to the one end and the other end of the inner wrapping paper 120 overlapping each other. When the first wrapping paper 112 is wrapped around the outer circumference of the inner wrapping paper 120, one end and the other end of the first wrapping paper 112 are overlapped, and the one end and the other end are adhered with an adhesive or the like. obtain.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and various modifications can be made within the scope of the technical ideas described in the claims, specification and drawings. is possible. Any shape or material that is not directly described in the specification and drawings is within the scope of the technical concept of the present invention as long as it produces the action and effect of the present invention.

100: Flavor-generating article 100A: Base material portion 100B: Mouthpiece portion 111: Flavor source 112: First wrapping paper 116: Hollow segment 116a: Hollow channel 116b: Filling layer 120: Inner wrapping paper 120a: First groove 120b: Second groove 130: first dam portion 140: second dam portion L1: distance S3: gap

Claims (14)

a first part;
a second portion longitudinally adjacent to the first portion;
The first portion comprises
a flavor source comprising tobacco;
an inner wrapping paper for wrapping the flavor source;
and an outer wrapping paper that wraps around the outer circumference of the inner wrapping paper,
The inner wrapping paper is thicker than the outer wrapping paper and has a plurality of grooves along the longitudinal direction at least on either the inner surface or the outer surface thereof,
A flavor generating article, wherein at least one of the plurality of grooves has a dam provided inside the groove. In the flavor generating article according to claim 1,
A flavor generating article, wherein each of the plurality of grooves has at least one of the dam portions. In the flavor generating article according to claim 2,
The flavor generating article, wherein the dam portion of each of the plurality of grooves is arranged at a different position in the longitudinal direction from the dam portion provided in the adjacent groove. In the flavor generating article according to claim 2 or 3,
in the longitudinal direction of the dam portion closest to the second portion in the longitudinal direction and the dam portion furthest from the second portion in the longitudinal direction among the dam portions of each of the plurality of grooves; The flavor generating article, wherein the distance is 50% or more and 90% or less of the length of the flavor source in the longitudinal direction. In the flavor generating article according to any one of claims 1 to 4,
The plurality of grooves includes a plurality of first grooves along the longitudinal direction on the inner surface of the inner wrapping paper,
The flavor generating article, wherein the dam section includes a first dam section provided inside the plurality of first grooves. In the flavor generating article according to claim 5,
The flavor generating article, wherein the width of the plurality of first grooves in the state where the flavor source is wrapped in the inner wrapping paper is 0.5 mm or more and 2.0 mm or less. In the flavor generating article according to claim 5 or 6,
The flavor generating article, wherein the depth of the plurality of first grooves is 0.1 mm or more and 1.5 mm or less. In the flavor generating article according to any one of claims 5 to 7,
The flavor-generating article, wherein the flavor source includes strands of tobacco arranged in the longitudinal direction. In the flavor generating article according to claim 8,
The flavor generating article, wherein the width of the strand-shaped tobacco in the direction perpendicular to the longitudinal direction is 0.5 mm or more and 2.0 mm or less. In the flavor generating article according to claim 8 or 9,
The flavor generating article, wherein the thickness of the strand-shaped tobacco in a direction orthogonal to the longitudinal direction is 0.1 mm or more and 0.5 mm or less. In the flavor generating article according to any one of claims 1 to 10,
The plurality of grooves includes a plurality of second grooves along the longitudinal direction on the outer surface of the inner wrapping paper,
The dam section includes a second dam section provided inside the plurality of second grooves,
The flavor generating article has a gap corresponding to the second groove between the outer surface of the inner wrapping paper and the inner surface of the outer wrapping paper. A flavor generating article according to claim 11,
the second portion has a hollow member located on a side adjacent to the first portion;
The plurality of second grooves of the inner wrapping paper extend from one longitudinal end to the other longitudinal end of the inner wrapping paper,
the hollow member has a hollow channel and a fill layer defining the hollow channel;
The flavor generating article, wherein the filling layer of the hollow member is positioned adjacent to or closing ends of the plurality of second grooves. In the flavor generating article according to any one of claims 1 to 12,
The flavor generating article, wherein the inner wrapping paper has a corrugated cross-sectional shape in a cross section orthogonal to the longitudinal direction. In the flavor generating article according to any one of claims 1 to 13,
A flavor generating article, wherein the inner wrapping paper has a basis weight of 40 g/m ² or more and 150 g/m ² or less.