WO2024057478A1

WO2024057478A1 - Flavor generation article, flavor generation system, and method for producing flavor generation article

Info

Publication number: WO2024057478A1
Application number: PCT/JP2022/034550
Authority: WO
Inventors: 光史松本
Original assignee: 日本たばこ産業株式会社
Priority date: 2022-09-15
Filing date: 2022-09-15
Publication date: 2024-03-21

Abstract

A flavor generation article for generating a flavor through heating. The article comprises a wrapping material for covering at least a portion of the surface of the flavor generation article and a folded or curved laminate disposed inside the wrapping material. The laminate includes a first sheet having a flavor generation base material and a second sheet disposed along the first sheet and the second sheet shrinks less than the first sheet upon heating.

Description

Flavor-generating article, flavor-generating system, and method for producing flavor-generating article

The present invention relates to a flavor-generating article, a flavor-generating system, and a method for producing a flavor-generating article.

BACKGROUND ART Conventionally, flavor-generating articles for absorbing flavors and the like without burning materials have been known. Such a flavor generating article has a flavor source containing a volatile component, and together with a flavor inhaler constitutes a flavor generating system. The flavor generating article can be an aerosol generating article that generates an aerosol. The flavor generating article is housed in the receptacle of the flavor inhaler and can be heated from inside or outside the flavor source. In Patent Documents 1 and 2, an aerosol-forming tobacco substrate having a susceptor therein is housed in an induction heating device, and the induction-heated susceptor heats the aerosol-forming tobacco substrate to generate an aerosol.

Japanese Patent No. 6789983 Japanese Patent No. 6843074

When the flavor-generating article is heated, the flavor-generating base material that is the flavor source contracts due to volatilization of volatile components, etc., and the flavor-generating base material may move or deform. In this case, there is a problem that the heating efficiency decreases due to a change in the relative position between the flavor generating base material and the heating element, such as separation of the flavor generating base material and the susceptor.

One of the objects of the present invention is to reduce at least one of movement and deformation of a flavor-generating base material due to heating of a flavor-generating article, and to suppress a decrease in heating efficiency.

According to the first aspect, a flavor-producing article is provided. This flavor-generating article is a flavor-generating article that generates flavor by heating, and includes a packaging material that covers at least a portion of the surface of the flavor-generating article, and a folded or curved packaging material that is placed inside the packaging material. The laminate includes a first sheet containing a flavor-generating base material, and a second sheet disposed along the first sheet, and the second sheet has a flavor-generating base material. In addition, it does not shrink as much as the first sheet.

According to the first aspect, at least one of movement and deformation of the flavor-generating base material due to heating of the flavor-generating article can be reduced, and a decrease in heating efficiency can be suppressed.

The gist of the second aspect is that in the first aspect, the second sheet is a sheet for reducing movement or deformation of the first sheet due to the heating.

According to the second aspect, it is possible to more reliably suppress a decrease in the heating efficiency of the flavor-producing article.

The gist of the third aspect is that in the first aspect or the second aspect, the second sheet includes paper.

According to the third aspect, the laminate can be easily processed while further reducing the movement or deformation of the first sheet due to the property of the paper that it does not easily shrink.

A gist of a fourth aspect is that in any of the first to third aspects, the second sheet includes pulp fibers.

According to the fourth aspect, since the strength of the second sheet is increased by the pulp, the laminate can be easily processed while further reducing movement or deformation of the first sheet.

In a fifth aspect, in any of the first to fourth aspects, the second sheet does not contain a flavor-generating base material or contains a flavor-generating base material at a lower concentration than the first sheet, and the second sheet includes a flavor-generating base material at a lower concentration than the first sheet. The main point is that the second sheet is not impregnated with liquid.

According to the fifth aspect, it is possible to efficiently generate flavor from the first sheet while reducing the cost and effort required to include the flavor generating base material during processing of the second sheet.

The gist of the sixth aspect is that in any of the first to fifth aspects, the second sheet is arranged on at least one surface of the first sheet.

According to the sixth aspect, it is possible to reduce movement or deformation of the first sheet toward the side where the second sheet is arranged.

In a seventh aspect, in the sixth aspect, the laminate includes a plurality of the first sheets stacked together, and the second sheet is arranged on both sides of the plurality of stacked first sheets. The gist is:

According to the seventh aspect, the movement or deformation of the first sheets can be further reduced by the second sheet supporting the plurality of first sheets from both sides.

The gist of the eighth aspect is that in any of the first to seventh aspects, the flavor-generating article includes a conductive material therein.

According to the eighth aspect, a conductive material can be used as a susceptor, and the susceptor is replaced every time the flavor-generating article is replaced, so that heating efficiency is reduced due to deposits on the heating element due to repeated flavor suction. No decline occurs.

The gist of a ninth aspect is that in the eighth aspect, the conductive material is a magnetic material.

According to the ninth aspect, heating can be performed efficiently due to the hysteresis loss of the magnetic material.

In a tenth aspect, in any one of the first to ninth aspects, the second sheet is located at least at a position where the curvature is the highest or a position where the curvature is equal to or greater than a predetermined value in the first sheet. The gist is that it is placed on the inside of a fold or curve.

According to the tenth aspect, it is possible to support a portion of the first sheet that tends to separate from a heat generating element such as a susceptor, reduce the separation, and further suppress a decrease in heating efficiency.

In an 11th aspect, in any of the 1st to 10th aspects, the laminate has a fold or curve that is displaced toward the side where the first surface of the laminate is disposed; The gist is to include a fold or curve that is displaced toward the side where the second surface is located on the back side of the first surface.

According to the eleventh aspect, the laminate can be made compact. Furthermore, the surface area of the susceptor that generates heat when heating the flavor-generating article can be increased, and heating efficiency can be increased.

A gist of a twelfth aspect is that in any of the first to eleventh aspects, the flavor-generating article is a tobacco stick.

According to the twelfth aspect, at least one of movement and deformation of the tobacco material due to heating of the flavor-generating article can be reduced, and a decrease in heating efficiency can be suppressed.

In a thirteenth aspect, in the twelfth aspect, when the second sheet is heated at a temperature of at least a portion of 300° C. to 400° C., the first sheet is heated along the direction in which the laminate extends. The gist is that it does not shrink more than the

According to the thirteenth aspect, it is possible to more reliably reduce at least one of the movement and deformation of the tobacco material due to heating of the flavor-generating article, and to suppress a decrease in heating efficiency.

According to a fourteenth aspect, a flavor generation system is provided. This flavor generation system includes the flavor generation article according to any one of the first to thirteenth aspects, and a flavor suction device that includes a heater that heats the flavor generation article or a coil that induction heats the flavor generation article. .

According to the fourteenth aspect, at least one of movement and deformation of the flavor-generating base material due to heating of the flavor-generating article can be reduced, and a decrease in heating efficiency can be suppressed.

According to a fifteenth aspect, a method for producing a flavor-generating article is provided. This method is a method for producing a flavor-generating article that generates flavor by heating, and includes the steps of: arranging a second sheet along a first sheet containing a flavor-generating base material to form a laminate; folding or curving the body; and wrapping the folded or curved laminate with a packaging material; Does not shrink.

According to the fifteenth aspect, it is possible to provide a flavor-generating article in which at least one of movement and deformation of the flavor-generating base material due to heating is reduced, and a decrease in heating efficiency is suppressed.

FIG. 1 is a perspective view schematically showing a flavor-generating article according to an embodiment. FIG. 2 is a side view schematically showing the flavor-generating article according to the embodiment. FIG. 3 is a sectional view of a first portion of the flavor-generating article according to the embodiment. FIG. 3 is a cross-sectional view of a second portion of the flavor-generating article according to the embodiment. It is a conceptual diagram showing the flavor generation system concerning the above-mentioned embodiment. It is a conceptual diagram for explaining the manufacturing method of the flavor generating article based on the said embodiment. FIG. 3 is a perspective view schematically showing a flavor-generating article according to Modification 1. FIG. FIG. 7 is a perspective view schematically showing a flavor-generating article according to Modification Example 2. FIG. FIG. 7 is a cross-sectional view schematically showing a flavor-generating article according to Modification Example 3. FIG. 7 is a cross-sectional view schematically showing a flavor-generating article according to Modification Example 5. FIG. 7 is a cross-sectional view schematically showing a flavor-generating article according to Modification Example 7. FIG. 3 is a conceptual diagram for explaining movement of a flavor-generating base material due to heating in a comparative example. FIG. 3 is a conceptual diagram for explaining movement of a flavor-generating base material due to heating in a comparative example.

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 redundant explanation will be omitted.

FIG. 1 is a perspective view schematically showing a flavor-generating article 10 of this embodiment. FIG. 2 is a side view schematically showing the flavor-generating article 10. The flavor generating article 10 includes a first portion 11 and a second portion 12. The boundary between the first portion 11 and the second portion 12 is schematically shown by a broken line BL. As shown in FIG. 2, the first portion 11 and the second portion 12 are arranged side by side along the central axis AX extending in the longitudinal direction of the flavor-generating article 10. As shown in FIG. The flavor-generating article 10 is stick-shaped as a whole. The flavor-generating article 10 is formed into a cylindrical shape centered on the central axis AX. The shape of the flavor-generating article 10 is not particularly limited as long as it can hold the laminate 15 described below. For example, the cross section of the flavor-generating article 10 perpendicular to the longitudinal direction may be flat or elliptical. The flavor-generating article 10 is configured to generate flavor by heating the first portion 11 and provide the flavor to a user who inhales the flavor-generating article 10 . The flavor-generating article 10 can generate flavor without requiring combustion by heating. The flavor-generating article 10 is preferably a tobacco stick, but is not particularly limited thereto as long as it can generate flavor by heating.

The first portion 11 functions as a flavor generating section that generates flavor by heating the first portion 11. When the flavor generating article 10 is a tobacco stick, the first portion 11 is a tobacco portion that generates tobacco flavor. The first portion 11 preferably has a rod shape, but is not limited to this as long as it can hold the laminate 15.

The second portion 12 is configured to allow the vapor or aerosol generated in the first portion 11 to pass through. This vapor or aerosol contains a flavoring substance. This vapor or aerosol is cooled in the second portion 12, the vapor becomes an aerosol, and the aerosol can be cooled to a temperature suitable for the user. In this way, since air flows from the first portion 11 to the second portion 12 when the user inhales, the side of the flavor-generating article 10 where the first portion 11 is arranged along the longitudinal direction can be called the upstream side, and the side where the second portion 12 is arranged can be called the downstream side. Note that, as long as the flavor-generating article 10 can provide the user with aerosol at an appropriate temperature, it is not necessary for the flavor-generating article 10 to include the second portion 12. Also, a portion having a structure similar to that of the second portion 12 may be provided upstream of the first portion 11. This can improve the appearance of the flavor-generating article 10, and in the case where a stopper 22 or the like shown in FIG. 4 is included, it can prevent the contents of the first portion 11 from jumping out of the first portion 11.

The first portion 11 includes a laminate 15 (FIG. 1) and a wrapper 60. The laminate 15 includes a susceptor 20, a flavor generation layer 30A, a flavor generation layer 30B, a suppression sheet 40A, and a suppression sheet 40B.

FIG. 3 is a cross-sectional view (AA cross-sectional view in FIG. 2) schematically showing the first portion 11 of the flavor-generating article 10. The flavor generation layer 30A includes flavor sheets 300A and 300B. The flavor generation layer 30B includes flavor sheets 300C and 300D. In the first part 11, an air channel 50 is formed between the laminate 15 and the wrapper 60. Hereinafter, the flavor generation layer 30A and the flavor generation layer 30B will be referred to as the flavor generation layer 30 without distinction. When the suppression sheet 40A and the suppression sheet 40B are referred to without distinction, they are referred to as the suppression sheet 40. Flavor sheets 300A, 300B, 300C, and 300D are referred to as flavor sheet 300 when each is referred to without distinction.

The laminate 15 includes a plurality of layers including a susceptor 20, a flavor generation layer 30, and a suppression sheet 40. The laminate 15 has at least one of a folded structure formed by folding a plurality of layers and a curved structure formed by bending a plurality of layers. Thereby, while arranging the laminate 15 inside the first portion 11, the surface area of the susceptor 20 that generates heat when heating the flavor-generating article 10 can be increased, and heating efficiency can be improved. From a similar point of view, the laminate 15 has a fold or curve that is displaced toward the side where the first surface S1 is arranged, and a second surface S2 on the back side of the first surface S1 in the laminate 15. It is preferable to include a fold or a curvature that is displaced toward the opposite side. In the illustrated example, the laminate 15 extends in the longitudinal direction of the flavor-generating article 10 and has an S-shaped cross section. However, the cross section of the laminate 15 is not limited to the S-shape, but may be a U-shape, a Z-shape, or a shape including three or more folds or curves. The laminate 15 preferably extends in the longitudinal direction of the flavor generating article 10 from the viewpoint of forming the air channels 50, but is not limited thereto.

In the laminate 15, the flavor sheet 300B, the flavor sheet 300A, and the suppression sheet 40A are arranged in this order in a direction away from the susceptor 20 on the first surface S1 side of the susceptor 20. Furthermore, on the second surface S2 side of the susceptor 20, a flavor sheet 300C, a flavor sheet 300D, and a suppression sheet 40B are arranged in this order in a direction away from the susceptor 20. Although it is preferable that the susceptor 20 and the flavor generation layer 30 are in contact with each other from the viewpoint of increasing heating efficiency, there may be a gap between the susceptor 20 and the flavor generation layer 30 as long as the desired heating efficiency is obtained. .

The susceptor 20 includes a conductive member. In other words, flavor generating article 10 includes a conductive material therein. This conductive material may be a metal such as stainless steel or a non-metallic material such as carbon graphite. From the viewpoint of efficiently generating heat due to hysteresis loss during induction heating, this conductive material is preferably a magnetic material. Examples of magnetic materials include ferritic stainless steel such as SUS430. The susceptor 20 generates heat due to the flow of an induced current as the magnetic field changes, thereby heating the flavor generation layer 30. When the flavor sheet 300 is heated by the susceptor 20 placed in advance on the flavor-generating article 10, the susceptor 20 is also replaced every time the flavor-generating article 10 is replaced, so that deposits may not be formed on the heating element due to repeated flavor suction. This has the advantage that heating efficiency does not decrease due to Furthermore, the flavor sheet 300 and the heating element can be arranged in more appropriate positions to improve heating efficiency.

It is preferable that the susceptor 20 has a plate shape from the viewpoint of increasing the surface area to improve heating efficiency and being easy to fold or curve. From the same viewpoint, the susceptor 20 may include conductive particles, and the susceptor 20 may be a plurality of conductive particles dispersed in the flavor sheet 300. For example, the susceptor 20 can be made of a conductive magnetic material, such as ferritic stainless steel, processed into particles. In the illustrated example, flavor generating layers 30A and 30B are arranged on the first surface S1 side and the second surface S2 side of the susceptor 20, respectively. However, the flavor generating layer 30 may be arranged only on one side of the susceptor 20. In other words, the susceptor may be arranged between the plurality of flavor sheets 300 as in the illustrated example, or may be arranged outside the flavor generation layer 30 in the flavor generation article 10.

The flavor generation layer 30 includes one or more flavor sheets 300. Flavor sheet 300 includes a flavor generating base material. Since the flavor generating layer 30 is constituted by the flavor sheet 300, it can be easily processed into a shape that matches the susceptor 20, and heating efficiency can be improved. Furthermore, since the tobacco leaves and the like can be made into a sheet without the need to chop them, the flavor-generating layer 30 can be efficiently processed.

The flavor-generating base material is a material that releases gaseous flavor substances when heated. Preferably, the flavor generating base material is a tobacco material. Examples of tobacco materials include materials obtained by processing dried tobacco leaves, tobacco extracts (extracts with water, organic solvents, or mixed solutions thereof), and the like. Tobacco leaves do not need to be chopped if they can be processed into sheets, but they may be chopped. The type of tobacco is not limited, and yellow varieties, burley varieties, orient varieties, native varieties, and other Nicotiana tabacum varieties, Nicotiana rustica varieties, etc. can be used. The flavor-generating base material can alternatively or additionally include at least one of a flavoring agent, a cooling agent, and a flavoring agent. Note that when the flavor-generating base material includes chopped plant material such as chopped tobacco leaves, the chopped plant material may be present between the susceptor 20 and the suppression sheet 40 or between the plurality of suppression sheets 40. It may also be configured to be filled.

The flavor sheet 300 can include an aerosol source. An aerosol source is a material that is vaporized by heating and cooled to produce an aerosol, or is atomized to produce an aerosol. Known aerosol sources can be used, examples of which include glycerin, polyhydric alcohols such as propylene glycol (PG), triethyl citrate (TEC), triacetin, and the like.

The flavor sheet 300 can include a binder or pulp. A binder is an adhesive for bonding fibers together. As the binder, for example, guar gum, xanthan gum, CMC (carboxymethylcellulose), CMC-Na (sodium salt of carboxymethylcellulose), pullulan and hydroxypropylcellulose (HPC), methylcellulose, hydroxylmethylcellulose, etc. can be used. The pulp can improve the strength of the flavor sheet 300. The flavor sheet 300 can be made of a sheet-like base material such as paper or nonwoven fabric to which a flavor-generating base material, an aerosol source, and the like are added.

The suppression sheet 40 is disposed along the flavor sheet 300 and is a sheet for reducing movement or deformation of the flavor sheet 300 due to heating of the flavor generating article 10. The suppression sheet 40 shrinks less than the flavor sheet 300 when heated to generate flavor from the flavor-generating article 10. In other words, the degree of contraction of the suppression sheet is greater than the degree of contraction of the flavor sheet 300. It is configured to be small. The movement and deformation of the flavor sheet 300 may be caused by contraction of the flavor sheet 300 due to heating. For example, if there is a portion of the flavor sheet 300 that is sandwiched and fixed between the susceptor 20 and the wrapper 60, the flavor sheet 300 contracts toward the fixed portion, and other portions of the flavor sheet 300 move or It will transform. Movement or deformation of the folded or curved flavor sheet 300 may cause separation between the susceptor 20, which is a heating element, and the flavor sheet 300, and may reduce heating efficiency. By disposing the suppressing sheet 40, which is less likely to shrink than the flavor sheet 300, along the flavor sheet 300, the suppressing sheet 40 suppresses the flavor sheet 300 so as to limit the range in which the shrinkable flavor sheet 300 can move or deform. It is possible to support the flavor sheet 300 and reduce the above-described movement or deformation of the flavor sheet 300 during the heating. As long as the reduction in heating efficiency due to movement or deformation of the flavor sheet 300 can be suppressed to a desired degree, the suppression sheet 40 may be in contact with the flavor sheet 300, or there may be a gap between the flavor sheet 300 and the suppression sheet 40. Good too. In the illustrated example, the flavor generation layer 30 includes a plurality of laminated flavor sheets 300, and suppressing sheets 40 are arranged on both sides of a portion of the laminate 15 made up of the plurality of flavor sheets 300. Thereby, the suppression sheet 40 supports the flavor sheet 300 from both sides, and movement or deformation of the flavor sheet 300 can be further reduced.

FIG. 12 is a cross-sectional view schematically showing a flavor-producing article 110 of a comparative example without the suppression sheet 40. Flavor generating article 110 includes a susceptor 120, flavor sheets 310A, 310B, 310C and 310D, and a wrapper 160. Flavor sheets 310B and 310C are in contact with both sides of susceptor 120, respectively.

FIG. 13 is a cross-sectional view schematically showing the flavor-generating article 110 after heating for flavor suction. In the illustrated example, the flavor sheet 300 shrinks due to heating in a part of the area around the susceptor 120 and is separated from the susceptor 120. In this case, it becomes difficult for the heat of the susceptor 120 to be transmitted to the separated portions of the flavor sheets 310B and 310C, resulting in a decrease in heating efficiency.

Returning to FIG. 3, in this embodiment, at least one of movement and deformation of the flavor sheet 300 is reduced by supporting the flavor sheet 300 with a suppressing sheet 40 that does not shrink more than the flavor sheet 300 during heating. Suppresses the decline in heating efficiency. In addition, in the laminated body 15, the suppression sheet 40 is arrange|positioned on both the 1st surface S1 side and the 2nd surface S2 side. However, the suppression sheet 40 only needs to be formed on at least one surface of the laminate 15. Thereby, it is possible to reduce movement or deformation of the flavor sheet 300 toward the side where the suppression sheet 40 is disposed.

It is preferable that the suppression sheet 40 includes a material that shrinks less than the flavor sheet 300 when heated for flavor suction. It is preferable that the suppression sheet 40 is paper or contains paper. Thereby, the suppressing sheet 40 can easily process the laminate 15 while reducing movement or deformation of the flavor sheet 300 due to the property of paper that does not easily shrink. From the same viewpoint, it is preferable that the suppression sheet 40 contains pulp fibers. Here, paper refers to paper manufactured by adhering plant and other fibers together, and also includes synthetic paper manufactured using synthetic polymers and paper blended with fibrous inorganic materials. Here, the fibrous inorganic material can include at least one of ceramic fibers and glass fibers. Pulp fiber is an aggregate of cellulose fibers extracted from plants such as wood, and is usually used as a raw material for paper. Examples of the pulp fiber include waste paper pulp, chemical pulp, and mechanical pulp. The material included in the suppression sheet 40 is not particularly limited as long as it can reduce movement or deformation of the flavor sheet 300 during heating, and nonwoven fabric or the like may be used.

Although it is preferable that the suppression sheet 40 is not impregnated with liquid, it is not limited thereto. If the suppression sheet 40 is impregnated with a liquid, the contraction of the suppression sheet 40 may be accelerated due to volatilization of the liquid due to heating. If the suppression sheet 40 is not impregnated with liquid, it is possible to prevent the flavor sheet 300 from becoming difficult to support due to such contraction of the suppression sheet 40.

The suppression sheet 40 may or may not contain a flavor-generating base material. From the viewpoint of supporting the flavor sheet 300, the suppression sheet 40 may be placed at a farther distance than the flavor sheet 300 with respect to the susceptor 20, which is a heating element. Therefore, from the viewpoint of efficiently generating flavor, the suppression sheet 40 may not contain a flavor-generating base material or may contain a flavor-generating base material at a lower concentration than the flavor sheet 300. For example, the suppression sheet 40 does not contain a flavor-generating base material or contains a flavor-generating base material at a lower concentration than the concentration of the flavor-generating base material in the flavor sheet 300, and the suppression sheet 40 is not impregnated with a liquid. It can be done. Thereby, while efficiently generating flavor from the flavor sheet 300, it is possible to reduce the cost and effort required to include the flavor generating base material during processing of the suppression sheet 40. The suppression sheet 40 may have a coating on the surface facing the flavor sheet 300. The composition of this coating is not particularly limited as long as it can suppress the liquid components of the flavor sheet 300 from transferring to the suppression sheet 40, and it can be made of, for example, a resin. Thereby, the function of the suppression sheet 40 to reduce movement or deformation of the flavor sheet 300 can be suppressed from deteriorating by the time the user uses the flavor generating article 10.

It is preferable that the suppression sheet 40 shrinks less than the flavor sheet 300 along the direction in which the laminate 15 extends during heating for flavor suction. This is because the amount of contraction in the direction in which the flavor sheet 300 extends is larger than the amount of contraction in the normal direction of the flavor sheet 300, and contributes more strongly to the movement and deformation of the flavor sheet 300.

In order to generate tobacco flavor, heating at a temperature such as 300°C to 400°C is suitable. Therefore, when the flavor-generating article 10 is a tobacco stick, the suppressing sheet 40 is heated at a temperature of at least a portion of 300° C. to 400° C. along the direction in which the laminate 15 extends. It is preferable that there is no shrinkage. Thereby, movement or deformation of the flavor sheet 300 containing tobacco can be reduced, and a decrease in tobacco heating efficiency can be suppressed. For example, when the flavor-generating article 10 is a tobacco stick, the suppression sheet 40 shrinks less than the flavor sheet 300 along the direction in which the laminate 15 extends when heated at 300°C or 350°C.

The air channel 50 is a space inside the first portion 11 that communicates the upstream side and the downstream side of the first portion 11, and is configured to allow air to pass therethrough. The form of the air channel 50 is not particularly limited as long as the flavor can be inhaled at a temperature acceptable to the user. In the illustrated example, the air channel 50 is formed between the laminate 15 and the wrapper 60, but the air channel 50 may be formed inside the laminate 15. The wrapper 60 is made of a packaging material such as paper, and covers at least a portion of the surface of the flavor-generating article 10. The laminate 15 is arranged inside the wrapper 60. In the illustrated example, the wrapper 60 is cylindrical, but the shape of the wrapper 60 is not particularly limited as long as it can accommodate the laminate 15 and allow the user to inhale the flavor.

FIG. 4 is a sectional view taken along line BB in FIG. 2, schematically showing a cross section of the second portion 12. The second portion 12 includes a cylindrical wrapper 60 and a stopper 22 located inside the wrapper 60. Thus, the wrapper 60 preferably extends from the first portion 11 to the second portion 12, but is not limited thereto.

The stopper 22 can prevent the laminate 15 from moving from the first portion 11 toward the second portion 12. Specifically, in this embodiment, at least a portion of the stopper 22 of the second portion 12 is located on the same radius as the stacked body 15 when viewed from the longitudinal direction. In other words, at least a portion of the stopper 22 is located so as to contact the stacked body 15 in the longitudinal direction. In this embodiment, the stopper 22 may be a paper whose both ends are connected to different positions on the inner surface of the cylindrical wrapper 60 and whose length between the ends is longer than the diameter of the wrapper 60. The stopper 22 is not limited to this, and may take any form that can prevent the laminate 15 from moving from the first portion 11 toward the second portion 12. For example, the stopper 22 may be a sheet whose cross section forms a chord connecting any two points on the wrapper 60.

Note that the second portion 12 may have a size or shape that matches the human mouth so that it can be used as a mouthpiece. Further, the second portion 12 may not include the stopper 22, and may be composed of only a cylindrical side wall, for example. Alternatively, the second portion 12 may further include a filter or the like that allows the flavor substance to pass through. The shape and material of such a filter are not particularly limited. The second portion 12 may include a filter filled with cellulose acetate or a paper filter filled with paper or non-woven fabric. For example, the second portion 12 can include a center hole filter consisting of a cylindrical sidewall filled with cellulose acetate fibers. The second portion 12 may be a combination of these filters.

FIG. 5 is a conceptual diagram showing the flavor generation system 1000 according to this embodiment. The flavor generation system 1000 includes the above-described flavor generation article 10 and a flavor inhaler 500. The flavor generation system 1000 is configured such that a user heats the flavor generation article 10 using the flavor inhaler 500 and inhales the generated flavor.

The flavor inhaler 500 includes a housing 510 and an induction coil 520. The housing 510 has an opening 513 through which the flavor-generating article 10 can pass, and a hollow space that communicates with the outside of the flavor inhaler 500 through the opening 513. The inner side wall 511 and bottom wall 512 of the casing 510 function as a storage section C1 that stores the flavor-generating article 10. The housing 510 is made of, for example, a resin, in particular, PC (polycarbonate), ABS (acrylonitrile-butadiene-styrene) resin, PEEK (polyetheretherketone), or a polymer alloy containing multiple types of polymers, or the like. It can be made of metal such as aluminum.

The induction coil 520 is electrically connected to a control device and a battery (not shown), and is configured to be able to change the magnetic field of the housing portion C1 and heat the susceptor 20 by induction under the control of the control device. In the illustrated example, an opening 513 and a housing portion C1 are formed around the longitudinal center axis AX1 of the flavor inhaler 500. The flavor inhaler 500 can heat the flavor-generating article 10 by induction, and the positions and shapes of each part are not particularly limited as long as the user can inhale the flavor generated from the flavor-generating article 10.

The flavor sheet 300 is called a first sheet, and the suppression sheet 40 is called a second sheet. The flavor-generating article 10 of the present embodiment is an article that generates flavor by heating, and includes a wrapper 60 that covers at least a portion of the surface of the flavor-generating article 10, and a folded or A curved laminate 15, the laminate 15 comprising a first sheet containing a flavor generating base material and a second sheet disposed along the first sheet, the second sheet being In addition, it shrinks less than the first sheet. Thereby, at least one of the movement and deformation of the flavor-generating base material due to the heating can be reduced, and a decrease in heating efficiency can be suppressed.

FIG. 6 is a conceptual diagram for explaining the method for manufacturing the flavor-generating article 10. In forming the laminate 15, a step of forming an intermediate laminate 70, which is an intermediate body in which the susceptor 20, the flavor sheet 300, and the suppression sheet 40 are laminated, is performed. In this step, the susceptor 20, the flavor sheet 300, and the suppression sheet 40 are arranged to overlap based on the order of lamination in the laminate 15, and the laminate 70 is formed. In the above example, in the laminate 15, the suppression sheet 40A, the flavor sheet 300A, the flavor sheet 300B, the susceptor 20, the flavor sheet 300C, the flavor sheet 300D, and the suppression sheet 40B are arranged in this order. Therefore, in the illustrated example, from the lower layer to the upper layer, the suppressing sheet 40A, the flavor sheet 300A, the flavor sheet 300B, the susceptor 20, the flavor sheet 300C, the flavor sheet 300D, and the suppressing sheet 40B, which are not folded or curved, are arranged in this order. A laminate 70 is formed in which are arranged. In the laminate 70, the suppression sheet 40 is arranged along the flavor sheet 300. After the step of forming the laminate 70, a folding or curving step of the laminate 70 is performed (arrow A1).

In the folding or curving step, the laminate 70 is subjected to at least one of folding and curving to form the laminate 15. The method of folding and curving is not particularly limited. When forming the S-shaped laminate 15, the center part 80 of the laminate 70 is sandwiched and fixed between plate-shaped or rod-shaped members, and the parts above and below the center part 80 of the laminate 70 are fixed. , these parts can be biased in opposite directions using guide members or the like having shapes corresponding to the shapes of these parts. In addition, further curving of the laminate 70 may be performed by inserting the laminate 70 inside a rotating tube. After the folding or bending step of the laminate 70, a packaging step is performed (arrow A2). Note that the method of folding and curving the laminate 70 is not particularly limited as long as the laminate 15 having a desired shape can be formed.

In the packaging step, the laminate 15, the stopper 22, etc. arranged on one side of the laminate 15 are wrapped by the wrapper 60, and the flavor-generating article 10 is formed.

In the method for manufacturing the flavor-generating article 10 of the present embodiment, the suppression sheet 40 is arranged along the flavor sheet 300 containing the flavor-generating base material to form a laminate 70, and the laminate 70 is folded or The method includes curving and wrapping the folded or curved laminate 15 with a packaging material. Thereby, the flavor-generating article 10 in which reduction in heating efficiency is suppressed can be manufactured without requiring sophisticated and complicated manufacturing equipment.

The following modifications are also within the scope of the present invention, and can be combined with the above embodiments or other modifications. In the following modified examples, parts having the same structures and functions as those in the above-described embodiment will be referred to with the same reference numerals, and descriptions thereof will be omitted as appropriate.

(Modification 1)
In the embodiments described above, the flavor-generating article 10 may not include the susceptor 20.

FIG. 7 is a cross-sectional view schematically showing a flavor-generating article 10A of this modification. The flavor-generating article 10A has the same configuration as the flavor-generating article 10 of the above-described embodiment, but differs in that it has a laminate 15A instead of the laminate 15.

The laminate 15A includes a flavor generation layer 30C and suppression sheets 40A and 40B, and does not include a susceptor. The flavor generation layer 30C includes one or more flavor sheets 300. In the laminate 15A, the suppression sheet 40A, the flavor generation layer 30C, and the suppression sheet 40B are laminated in this order. The suppression sheet 40 is arranged along the flavor generation layer 30C and is configured to reduce movement or deformation of the flavor sheet 300 when the flavor generation article 10 is heated. In the illustrated example, the laminate 15A extends in the longitudinal direction of the flavor-generating article 10A, and has an S-shaped cross section. However, the shape of the outline of the laminate 15A can be made into various shapes similarly to the laminate 15 as long as it can come into contact with a pin heater to be described later.

It is preferable that the flavor-generating article 10A of this modification is heated by a pin heater. The pin heater includes a rod-shaped or plate-shaped heating element extending in the longitudinal direction of the pin heater. The heating element is inserted into the flavor generating layer 30C along the longitudinal direction of the flavor generating article 10A. The mode of heating is not particularly limited as long as the temperature of the heating element can be raised to a desired level, but heating can be performed, for example, by Joule heat using electric power supplied from a battery (not shown) to the heating element. The pin heater heats the flavor generation layer 30C from the inside. During heating, movement or deformation of the flavor sheet 300 is reduced by the suppressing sheet 40, and a decrease in heating efficiency is suppressed.

(Modification 2)
In the embodiments described above, the flavor-generating article 10 may include a roll-shaped laminate 15.

FIG. 8 is a perspective view schematically showing a flavor-generating article 10B of this modification. The flavor-generating article 10B has the same configuration as the flavor-generating article 10 of the above-described embodiment, but differs in that it has a laminate 15B instead of the laminate 15. The laminate 15B is curved and arranged inside the wrapper 60 so as to surround the hollow 600, and has a roll shape. The laminated body 15B extends along the circumferential direction while gradually shortening the distance from the central axis AX. The laminate 15B includes a flavor generation layer 30D and a suppression sheet 40C disposed along the flavor generation layer 30D and inside the flavor generation layer 30D. In the laminate 15B, the suppressing sheet 40C and the flavor generating layer 30D are arranged one or more times in this order radially outward. The flavor generation layer 30D includes one or more flavor sheets 300 that extend along the circumferential direction while gradually shortening the distance from the central axis AX. Here, the "circumferential direction" and the "radial direction" are the circumferential direction and the radial direction of a rotating coordinate system centered on the central axis AX of the flavor-generating article 10B.

It is preferable that the flavor-generating article 10B of this modification is heated by a peripheral heating type heater. The outer periphery heating type heater is arranged on the outer periphery side of the storage section C1 of the flavor inhaler 500, and heats the flavor generating article 10B stored in the storage section C1 from the outside. This heating causes the flavor sheet 300 to contract and be moved or deformed radially inward. However, in this modification, the suppression sheet 40C can reduce the movement or deformation of the flavor sheet 300, and can suppress a decrease in heating efficiency.

(Modification 3)
In the embodiment described above, the suppression sheet 40 may be arranged at a position corresponding to a specific shape of the flavor sheet 300.

FIG. 9 is a cross-sectional view schematically showing a flavor-generating article 10C of this modification, and corresponds to a cross-sectional view of the first portion 11A of the flavor-generating article 10C. The flavor-generating article 10C has the same configuration as the flavor-generating article 10 of the above-described embodiment, but differs in that it includes suppressing sheets 41A and 41B instead of suppressing sheets 40A and 40B. Suppressing sheets 41A and 41B cover only part of the surfaces of opposing flavor sheets 300A and 300D, respectively.

Regarding FIG. 13 related to the above-mentioned comparative example, the inventor discovered that the flavor sheets 310B and 310C are removed from the susceptor 120 at the folded or curved inner portion P10 of the susceptor 120 due to shrinkage of the flavor sheets 310A, 310B, 310C and 310D due to heating. We found that it is particularly easy to separate.

Returning to FIG. 9, in this modification, the suppression sheet 41A is arranged so as to cover the position P1 with the highest curvature in the flavor sheet 300A. Moreover, the suppression sheet 41B is arranged so as to cover the position P2 with the highest curvature in the flavor sheet 300D. Alternatively, the suppression sheet 41A or 41B may be arranged to cover the portion of the flavor sheet 300 where the curvature is equal to or greater than a predetermined value. Thereby, it is possible to support the portion of the flavor sheet 300 that tends to separate from the susceptor 20, reduce separation, and suppress a decrease in heating efficiency. From the same point of view and from the viewpoint of efficiently arranging the suppression sheets 41A, 41B, the suppression sheets 41A, 41B are placed only at the position of the highest curvature in the flavor sheet 300, or only at the position where the curvature is equal to or higher than a predetermined value. , may be placed inside the fold or curve of the flavor sheet 300. When referring to the suppression sheets 41A and 41B without distinguishing them, they are referred to as the suppression sheet 41. Note that the number of suppression sheets 41 arranged in the flavor-generating article 10C is not particularly limited, and may be 1 or 3 or more.

(Modification 4)
In the embodiment described above, shrinkage of the flavor sheet 300 may be suppressed by adjusting the density of the flavor sheet 300.

The flavor sheet 300 does not need to have a uniform density. The higher the density of the flavor sheet 300, the less the flavor sheet 300 tends to shrink. Therefore, in the flavor sheet 300, it is preferable to make the density of the curved part higher than the density of other parts, and the density of the part where the curvature is a predetermined value or more may be higher than the density of other parts. For example, in FIG. 3, the flavor-generating article 10 is arranged so that the density is higher at a position P1 of the flavor sheet 300A with the highest curvature, or at a portion of the flavor sheet 300A where the curvature is greater than or equal to a predetermined value, than at other portions. Can be set. In this way, in the flavor generating article 10 of this modification, the density of the flavor sheet 300 can be changed based on the curvature of the flavor sheet 300. Note that in this modification, the flavor-generating article 10 does not need to include the suppression sheet 40. Even in this case, shrinkage of the flavor sheet 300 can be suppressed.

(Modification 5)
In the embodiment described above, the flavor sheet 300 may be coated based on the curvature of the flavor sheet 300 to suppress shrinkage of the flavor sheet 300.

FIG. 10 is a cross-sectional view schematically showing the flavor-generating article 10D of this modification, and corresponds to a cross-sectional view of the first portion 11B of the flavor-generating article 10D. Flavor-generating article 10D has the same configuration as flavor-generating article 10 of the above-described embodiment, but differs in that flavor sheets 300E and 300F are provided instead of flavor sheets 300A and 300D, respectively.

The flavor sheet 300E is provided with a coating 3000 at the highest curvature position P100 in the flavor sheet 300E, or at a portion of the flavor sheet 300E where the curvature is equal to or greater than a predetermined value. The composition of coating 3000 is not particularly limited as long as it is less likely to shrink than flavor sheet 300E. Coating 3000 can include, for example, a resin or an inorganic compound such as water glass or calcium carbonate. Similarly to the flavor sheet 300E, the coating 3000 is formed on the flavor sheet 300F at a position based on the curvature.

Alternatively or additionally to the coating 3000, the flavor sheet 300E is coated with a material such as a resin that does not easily shrink at the position P100 with the highest curvature in the flavor sheet 300E, or in a portion of the flavor sheet 300E where the curvature is equal to or greater than a predetermined value. The flavor sheet 300E may have a two-layer structure, or may have a thicker flavor sheet 300E. In this way, a portion of the flavor sheet 300E may have two or more layers based on the curvature. In this modification, the flavor-generating article 10D does not need to include the suppression sheet 40. Even in this case, shrinkage of the flavor sheet 300 can be suppressed.

(Modification 6)
In the embodiment described above, the flavor sheet 300 and the susceptor 20 may be bonded together using an adhesive such as glue. As this glue, for example, a vinyl acetate adhesive can be used. Thereby, it is possible to suppress the flavor sheet 300 from separating from the susceptor 20. Alternatively, the adhesive may be used to bond between the plurality of flavor sheets 300 or between the flavor sheets 300 and the suppression sheet 40. Thereby, movement or deformation of the flavor sheet 300 can be reduced, and separation of the flavor sheet 300 from the susceptor 20 can be suppressed. The adhesive can be applied between the flavor sheet 300 and the susceptor 20, between the plurality of flavor sheets 300, and at least one between the flavor sheet 300 and the suppression sheet 40.

(Modification 7)
In the embodiment described above, a member that suppresses movement or deformation of the laminate 15 may be placed between the laminate 15 and the wrapper 60. Thereby, movement or deformation of the flavor sheet 300 can be further suppressed.

FIG. 11 is a cross-sectional view schematically showing the flavor-generating article 10E of this modification, and corresponds to a cross-sectional view of the first portion 11C of the flavor-generating article 10E. The flavor-generating article 10E has a similar configuration to the flavor-generating article 10 of the above-described embodiment, but a suppressing member is provided between the suppressing sheet 40A and the wrapper 60 and between the suppressing sheet 40B and the wrapper 60 in the air channel 50. It differs in that it includes 90.

The suppressing member 90 is configured to suppress movement or deformation of the laminate 15 when coming into contact with the laminate 15. The shape of the suppressing member 90 is not particularly limited as long as it can suppress movement or deformation of the laminate 15. The suppressing member 90 is preferably rod-shaped from the viewpoint of being disposed in the first portion 11C extending in the longitudinal direction, and may be cylindrical or columnar. In the illustrated example, the suppressing member 90 is cylindrical and has a circular cross section, but the suppressing member 90 may have an elliptical or polygonal cross section. The material of the suppressing member 90 is not particularly limited as long as it can suppress the movement or deformation of the laminate 15, but it is preferable that the suppressing member 90 includes a material that is less susceptible to heat shrinkage than the laminate 15. The suppressing member 90 can include, for example, paper, pulp mold, heat-resistant resin, or the like.

The suppressing member 90 is arranged at a position to support the curved portion of the flavor sheet 300 from inside via the suppressing sheet 40. In this way, it is preferable that the suppressing member 90 be disposed inside the fold or curve of the flavor sheet 300 from the viewpoint of firmly supporting the portion of the flavor sheet 300 that is likely to move or deform. The position of the suppressing member 90 is not particularly limited as long as the movement or deformation of the laminate 15 can be suppressed, and for example, the suppressing member 90 may be in contact with the center or end of the laminate 15. In the illustrated example, two suppressing members 90 are arranged in the first portion 11C. However, the number of suppressing members 90 in the first portion 11C is not particularly limited, and may be one or three or more. Note that the laminate 15 may not include the suppressing sheet 40 and the suppressing member 90 may be in contact with the flavor sheet 300. Even in such a case, movement or deformation of the flavor sheet 300 can be suppressed.

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. Note that any shape or material not directly described in the specification or drawings is within the scope of the technical idea of the present invention as long as it achieves the action and effect of the present invention.

10, 10A, 10B, 10C, 10D, 10E, 110: Flavor generating article 11, 11A, 11B, 11C: First portion 12: Second portion 15, 15A, 15B, 70: Laminated body 20, 120: Susceptor 22: Stopper 30, 30A, 30B, 30C, 30D: Flavor generation layer 40, 40A, 40B, 41, 41A, 41B: Suppression sheet 50: Air channel 60, 160: Wrapper 90: Suppression member 300, 300A, 300B, 300C, 300D , 300E, 300F, 310A, 310B, 310C, 310D: Flavor sheet 500: Flavor suction device 510: Housing 511: Side wall 512: Bottom wall 520: Induction coil 1000: Flavor generation system 3000: Coating AX: Center of flavor generation article Axis AX1: Central axis C1 of the flavor inhaler: Storage section S1: First surface S2: Second surface

Claims

A flavor-generating article that generates flavor by heating,
a packaging material that covers at least a portion of the surface of the flavor-generating article;
a folded or curved laminate disposed inside the packaging material,
The laminate includes:
a first sheet containing a flavor-generating base material;
a second sheet arranged along the first sheet,
The second sheet is a flavor-producing article in which the second sheet shrinks less than the first sheet when heated.
The flavor-generating article according to claim 1, wherein the second sheet is a sheet for reducing movement or deformation of the first sheet due to the heating.
The flavor-generating article according to claim 1 or 2, wherein the second sheet includes paper.
The flavor-generating article according to any one of claims 1 to 3, wherein the second sheet contains pulp fibers.
The second sheet does not contain a flavor-generating base material or contains a flavor-generating base material at a lower concentration than the first sheet,
The flavor-generating article according to any one of claims 1 to 4, wherein the second sheet is not impregnated with a liquid.
The flavor-generating article according to any one of claims 1 to 5, wherein the second sheet is arranged on at least one surface of the first sheet.
The flavor-generating article according to claim 6, wherein the laminate includes a plurality of the first sheets stacked together, and the second sheet is arranged on both sides of the plurality of stacked first sheets.
The flavor-generating article according to any one of claims 1 to 7, wherein the flavor-generating article contains a conductive material therein.
The flavor-generating article according to claim 8, wherein the conductive material is a magnetic material.
10. The method according to claim 1, wherein the second sheet is arranged inside the fold or curve of the first sheet at least at a position where the curvature is highest or a position where the curvature is equal to or higher than a predetermined value in the first sheet. The flavor-generating article according to any one of the items.
The laminate is folded or curved to the side where the first surface of the laminate is disposed, and the laminate is displaced to the side where the second surface behind the first surface is disposed. 11. A flavor generating article according to any one of claims 1 to 10, comprising a folding or curving.
The flavor-generating article according to any one of claims 1 to 11, wherein the flavor-generating article is a tobacco stick.
13. The second sheet shrinks less than the first sheet along the direction in which the laminate extends when heated at a temperature of at least a portion of 300°C to 400°C. flavor-generating articles.
The flavor-generating article according to any one of claims 1 to 13,
A flavor generation system comprising: a heater for heating the flavor generation article; or a flavor suction device equipped with a coil for inductively heating the flavor generation article.
A method for producing a flavor-generating article that generates flavor by heating, the method comprising:
arranging a second sheet along the first sheet containing the flavor-generating base material to form a laminate;
folding or curving the laminate;
Wrapping the folded or curved laminate with a packaging material;
Equipped with
The method for producing a flavor-generating article, wherein the second sheet shrinks less than the first sheet during the heating.