阅读说明：本技术 香味产生段、及具备其的香味产生物品以及香味吸取系统 (Fragrance generation segment, fragrance generation article provided with same, and fragrance suction system ) 是由 山田学 于 2018-06-22 设计创作，主要内容包括：本发明提供一种香味产生段、具备其的香味产生物品及香味吸取系统,该香味产生段具备第一香味产生部件及第二香味产生部件,上述第一香味产生部件及第二香味产生部件中至少一个香味产生部件包含多个层叠的香味产生片,且在至少一对相邻的上述香味产生片间具有该香味产生片彼此不接触的非接触部,上述片的主面与另一香味产生部件对置。该香味产生段提供良好的香味。(The present invention provides a fragrance generation segment, a fragrance generation article provided with the same and a fragrance suction system, wherein the fragrance generation segment is provided with a first fragrance generation component and a second fragrance generation component, at least one fragrance generation component in the first fragrance generation component and the second fragrance generation component comprises a plurality of laminated fragrance generation sheets, a non-contact part for preventing the fragrance generation sheets from being contacted with each other is arranged between at least one pair of adjacent fragrance generation sheets, and the main surface of each sheet is opposite to the other fragrance generation component. The flavour generation segment provides a good flavour.)

1. A scent generation section includes a first scent generation section and a second scent generation section,

at least one of the first and second flavor generating members includes a plurality of stacked flavor generating sheets, and a non-contact portion where the flavor generating sheets do not contact each other is provided between at least one pair of adjacent flavor generating sheets,

the main surface of the fragrance generating sheet faces another fragrance generating member.

2. The flavor generation segment of claim 1, wherein,

a contact portion where the flavor-generating sheets contact each other is further provided between at least one pair of adjacent flavor-generating sheets.

3. The flavor generation segment of claim 2, wherein,

the contact portion is formed between the contact portions, and the non-contact portion is formed between the contact portions.

4. The flavor generation segment of claim 1, wherein,

there is a space between the first and second scent generating elements.

5. The flavor generation segment of claim 4, wherein,

the first and second scent generation members include a heat conductive sheet,

the thermally conductive sheet is exposed in the space.

6. The flavor generation segment of claim 1, wherein,

at least one of the plurality of flavor-generating sheets is subjected to surface processing on a part or all of at least one surface.

7. The flavor generation segment of claim 6,

the surface processing is crimping processing.

8. The flavor generation segment of claim 1, wherein,

a wrapping cloth is provided on the outer side of the flavor generating member.

9. A flavor-producing article comprising the flavor-producing segment according to claim 1 and a filter, and capable of being sucked from the filter side.

10. A scent extraction system having the scent generation segment of claim 1 and a heater to heat the scent generation segment.

11. The scent extraction system of claim 10,

the scent generation section has a space between the first and second scent generation elements, and the heater has a shape in which at least a portion of the heater can be positioned within the space.

12. The scent extraction system of claim 11,

the first and second scent generation members include a heat conduction sheet exposed in the space, and the heat conduction sheet faces the heater.

13. The scent extraction system of claim 10,

the heater is a plate heater.

14. A method for manufacturing a flavor generation segment, the method for manufacturing the flavor generation segment according to claim 1, comprising:

a step (A) of placing the first flavor-generating material and the second flavor-generating material separately on a base material;

and a step B of folding the base material so that the upper surfaces of the two flavor-generating members face each other to form a rod-like segment.

15. The manufacturing method according to claim 14,

the step B further includes a step of forming a space between the two opposing flavor generating members.

16. The manufacturing method according to claim 14,

the step a further includes a step of providing an opening between the first flavor generating member and the second flavor generating member on the base.

17. A precursor of the flavor generation segment according to claim 1, comprising:

base material, and

a first flavor generating member and a second flavor generating member separately disposed on the base material,

at least one of the flavor generating members includes a plurality of flavor generating sheets stacked in parallel on a substrate, and a non-contact portion where the flavor generating sheets do not contact each other is provided between at least one pair of adjacent flavor generating sheets.

Technical Field

The present invention relates to a flavor generation segment, a flavor generation article provided with the same, and a flavor suction system.

Background

At present, as a substitute for cigarette, development of a non-combustion flavor-absorbing system has been advanced. For example, patent document 1 discloses a cartridge including a case having a recess for housing a flat heater and a laminate for absorbing tobacco material disposed on an inner surface of the case so as to be close to the heater through a wall of the recess of the case (fig. 4 of patent document 1).

Disclosure of Invention

Technical problem to be solved by the invention

In the non-combustion flavor-extracting system, it is required to obtain a more satisfactory flavor, but there is still room for improvement in the technique described in patent document 1. In view of the above circumstances, an object of the present invention is to provide a flavor generation segment capable of providing a good flavor, a flavor generation article including the same, and a flavor extraction system.

Means for solving the problems

The present inventors have found that a flavor generation segment having a specific structure can solve the above problems, and have completed the present invention. That is, the above problem is solved by the following invention.

[1] A scent generation section includes a first scent generation section and a second scent generation section,

at least one of the first and second flavor generating members includes a plurality of stacked flavor generating sheets, and a non-contact portion where the flavor generating sheets do not contact each other is provided between at least one pair of adjacent flavor generating sheets,

the main surface of the fragrance generating sheet faces another fragrance generating member.

[2] The flavor generation segment according to [1], wherein a contact portion where the flavor generation sheets contact each other is further provided between at least one pair of adjacent flavor generation sheets.

[3] The flavor generation segment according to [2], wherein there are two or more of the contact portions, and the non-contact portion is formed between the contact portions.

[4] The scent generation section according to any one of [1] to [3], wherein a space is provided between the first scent generation element and the second scent generation element.

[5] The scent generation section according to [4], wherein the first scent generation member and the second scent generation member include a heat conductive sheet,

the thermally conductive sheet is exposed in the space.

[6] The flavor generation segment according to any one of [1] to [5], wherein at least one of the plurality of flavor generation sheets is subjected to surface processing on a part or all of at least one surface.

[7] The flavor producing segment according to [6], wherein the surface processing is a crimping processing.

[8] The flavor generation segment according to any one of [1] to [7], wherein a wrapping cloth is provided outside the flavor generation member.

[9] A flavor-generating article which comprises the flavor-generating segment according to any one of the above [1] to [8] and a filter and which can be sucked from the filter side.

[10] A flavor extraction system comprising the flavor generation segment according to any one of [1] to [8] and a heater for heating the flavor generation segment.

[11] The scent extraction system of [10], wherein the scent generation segment has a space between the first and second scent generation elements, the heater being shaped such that at least a portion of the heater is positionable within the space.

[12] The scent extraction system according to [11], wherein the first and second scent generation parts include a heat conduction sheet exposed in the space, and the heat conduction sheet faces the heater.

[13] The flavor extraction system according to any one of [10] to [12], wherein the heater is a flat plate heater.

[14] A method for producing the flavor-producing segment according to any one of [1] to [8], comprising:

a step (A) of placing the first flavor-generating material and the second flavor-generating material separately on a base material;

and a step B of folding the base material so that the upper surfaces of the two flavor-generating members face each other to form a rod-like segment.

[15] The production method according to [14], wherein the step B further includes a step of forming a space between the two opposing flavor-generating members.

[16] The production method according to [14] or [15], wherein the step A further comprises a step of providing an opening between the first flavor-generating material and the second flavor-generating material on the substrate.

[17] A precursor of the flavor-producing segment according to any one of [1] to [8], comprising:

base material, and

a first flavor generating member and a second flavor generating member separately disposed on the base material,

at least one of the flavor generating members includes a plurality of flavor generating sheets stacked in parallel on a substrate, and a non-contact portion where the flavor generating sheets do not contact each other is provided between at least one pair of adjacent flavor generating sheets.

Effects of the invention

The invention provides a fragrance generation segment capable of providing good fragrance, a fragrance generation article with the same and a fragrance absorption system.

Drawings

Fig. 1 is a schematic view of a flavor extraction system of the present invention.

Fig. 2A is a diagram showing an outline of a flavor generation segment of the present invention.

Fig. 2B is a diagram showing an outline of a part of the flavor generation section of the present invention.

Fig. 2C is a diagram showing one state of the stacked flavor-generating sheets.

Fig. 2D is a diagram showing a gap provided in the stacked flavor-generating sheets.

Fig. 3 is a diagram showing an outline of the flavor-generating article of the present invention.

Fig. 4 is a diagram showing the arrangement of the heater.

Fig. 5 is a diagram showing an outline of the method for producing a flavor-producing segment according to the present invention.

Fig. 6 is a diagram showing an outline of the method for producing a flavor-generating segment according to the present invention.

Fig. 7 is a diagram showing an outline of the method for producing a flavor-generating article according to the present invention.

Fig. 8A is a diagram showing an outline of the method for producing a flavor-generating article according to the present invention.

Fig. 8B is a diagram showing an outline of the method for producing a flavor-generating article according to the present invention.

Fig. 9 is a diagram showing an outline of a method for manufacturing a flavor suction system according to the present invention.

Fig. 10 is a diagram showing one embodiment of the arrangement of the flavor-generating sheet.

Detailed Description

In the present invention, the scent generation section is a substrate for generating scent. The fragrance generating article comprises at least a fragrance generating section, and is an article capable of generating fragrance or a rod-shaped article capable of absorbing fragrance. The scent generating article comprises a scent generating segment, but the scent generating segment itself can also be a scent generating article. The fragrance extracting system refers to a combination of a fragrance generating article and a heating unit provided with a heater.

1. Flavor generation segment

Fig. 2A shows a mode of the flavor-producing segment of the present invention. In FIG. 2A, 1a is a first flavor generating part, 1b is a second flavor generating part, 10 is a flavor generating sheet, 10_outIs the outermost fragrance-generating sheet, 10_inThe fragrance-generating sheet is the innermost layer, 14 is a space, and 16 is a heat-conductive sheet. The first flavor generating member 1a and the second flavor generating member 1b are disposed to face each other. In this case, the main surfaces of the two flavor generating members are preferably arranged to face each other, and more preferably, the main surfaces are arranged in parallel. In fig. 2A, two flavor generating members are constituted by a plurality of flavor generating sheets, but one flavor generating member may be constituted by 1 flavor generating sheet or may be constituted by a flavor generating block. In the present invention, a sheet means a shape having a pair of substantially parallel main surfaces and side surfaces. The sheet is preferably produced by papermaking. The flavor-generating block is preferably produced by a method other than papermaking, such as injection molding or extrusion molding. The shape of the flavor-generating block is not limited, but may be a cube, a rectangular parallelepiped, a cylinder, an elliptic cylinder, or the like, and is preferably a rectangular parallelepiped. In this aspect, two flavor generating members are disposed so that the main surface of the flavor generating sheet faces the flavor generating block. In view of the flavor transfer efficiency, it is preferable that the two flavor generating members are constituted by a plurality of flavor generating sheets, and therefore, the present invention will be described below by way of example.

The shape of the flavor-generating segment 1 of the present invention is not limited, but is preferably columnar. The flavor-generating segment 1 of the present invention preferably has a columnar shape satisfying a shape defined as follows, the aspect ratio of which is 1 or more.

Length-width ratio h/w

W is the width of the bottom surface of the columnar body, h is the height, and h ≧ W is preferred. The shape of the bottom surface is not limited, and may be polygonal, rounded polygonal, circular, elliptical, or the like, and the width w is a diameter in the case of a circular bottom surface, a major diameter in the case of an elliptical bottom surface, or a diameter of a circumscribed circle or a major diameter of a circumscribed ellipse in the case of a polygonal bottom surface or rounded polygonal bottom surface. For example, when a flavor-generating segment having a bottom surface shape as shown in fig. 2a (ii) is obtained by rolling up a flavor-generating sheet of the form shown in fig. 2a (i) with a wrapping cloth described later, the bottom surface thereof has an elliptical shape, and therefore, the width w of the bottom surface can be regarded as the major axis of the circumscribed ellipse. When the length is compared with the length perpendicular thereto, the former becomes the width w and the latter becomes the height h. In view of ease of manufacture and the like, the bottom surface is preferably polygonal, and more preferably quadrangular. Preferably, the fragrance generating section 1 has a height h of about 5mm to 20mm and a width w of about 2mm to 5 mm. Although not shown, the flavor-generating segment 1 may have a wrapping cloth at the outermost portion. The wrapping cloth may be roll paper, or may be constituted by the flavor-generating sheet 10. The cover cloth may be configured by the base material 6 as described later.

The flavor-generating sheet is a sheet that generates a flavor, and examples thereof include a sheet in which a component that can generate a flavor is supported on a sheet base material, and a sheet made of a material that generates a flavor. A plurality of fragrance generating sheets are laminated to constitute a fragrance generating member. The lamination means that the main surfaces of the flavor-generating sheets are arranged to overlap each other. However, since at least one pair of adjacent flavor-generating sheets has a non-contact portion, the present invention is stacked such that the entire surfaces of the adjacent flavor-generating sheets do not contact each other. That is, when the flavor generating member includes 3 or more flavor generating sheets, if one pair of sheets has a non-contact portion, the other pair of sheets can be in contact with each other over the entire surface. However, in the present invention, it is preferable to have a non-contact portion between all the sheets in consideration of the flavor transfer efficiency and the like.

Examples of the component capable of generating flavor include flavor components contained in tobacco materials and flavor components such as menthol. Examples of the sheet base include tobacco materials such as compressed tobacco particles and tobacco powder. In the present invention, a tobacco material is preferred as the sheet base material. That is, the flavor-generating sheet is preferably a tobacco sheet in which a component capable of generating flavor as needed is supported on a base sheet of a tobacco material. The fragrance generating sheet may also generate aerosol with heating. In order to promote the generation of aerosol, an aerosol source such as a polyhydric alcohol such as glycerin, propylene glycol, and 1, 3-butanediol may be further added. The amount of the aerosol source added is preferably 5 to 50 wt%, more preferably 10 to 30 wt%, based on the dry weight of the flavor-generating sheet. In addition, polyhydric alcohols such as glycerin, propylene glycol, and 1, 3-butanediol may be added as flavor components. In the case where an aerosol source is included or a fragrance component generates aerosol, the fragrance-generating sheet is also an aerosol-generating sheet.

First, a description will be given of a flavor-generating sheet as a raw material before lamination.

1) Modulation

When the flavor-generating sheet is an aerosol-generating sheet, preferably a tobacco sheet, the tobacco sheet can be suitably produced by a known method such as paper making, slurry, rolling, or the like. Specifically, the paper can be produced by a method including the following steps. 1) Coarsely pulverizing dried tobacco material, and extracting with water to separate into water extract and residue. 2) The aqueous extract was dried under reduced pressure and concentrated. 3) The slurry was added to the residue, and after fiberization by a refiner, papermaking was performed. 4) Adding the concentrated solution of water extract into the paper sheet, drying, and making into tobacco sheet. In this case, a step of removing a part of the components such as nitrosamine may be added (see Japanese patent application laid-open No. 2004-510422). In the case of the thick slurry method, the slurry can be produced by a method including the following steps. 1) The aqueous slurry binder and the crushed tobacco are mixed. 2) The mixture is thinly spread (cast) and dried. In addition, as described in international publication No. 2014/104078, a nonwoven-fabric-like tobacco sheet produced by a method including the following steps can be used. 1) Mixing the powdered tobacco material with a binder. 2) The mixture was held by a nonwoven fabric. 3) The laminate was formed into a predetermined shape by thermal fusion to obtain a nonwoven-fabric-like tobacco sheet. The composition of the tobacco sheet is not particularly limited, and for example, the content of the tobacco material is preferably 50 to 95 wt% based on the total weight of the tobacco sheet. The tobacco sheet may contain a binder, and examples of the binder include guar gum, xanthan gum, CMC (carboxymethyl cellulose), CMC-Na (sodium salt of carboxymethyl cellulose), and the like. The amount of the binder is preferably 2 to 20 wt% based on the total weight of the tobacco sheet. The tobacco flakes may also contain other additives. Examples of the additive include fillers such as slurry. As mentioned above, the tobacco flakes contain ingredients that can produce a flavor. In the present invention, a plurality of tobacco flakes are used, but the tobacco flakes may have the same composition or physical properties, or some or all of the tobacco flakes may have different compositions or physical properties. In the case where the flavor-generating sheet is other than a tobacco sheet, for example, a sheet using a plant pulp other than tobacco raw materials as a sheet base material can be used.

2) Size, etc

The shape of the flavor-generating sheet is not limited, but the shape of the main surface of the sheet is preferably a quadrangle. The thickness is not limited, but is preferably 200 μm to 2mm, more preferably 200 to 600 μm, in consideration of the high efficiency of heat exchange, the strength of the flavor-generating segment, and the like. The thickness of each flavor-generating sheet may be the same or different. In the case of the flavor-generating segment 1, the length parallel to the height h thereof is referred to as a flavor-generating sheet length L, and the length orthogonal thereto is referred to as a width W. The height h and the flavor-producing sheet length L may be the same or different. For example, in the case where the fragrance generation section has a wrapping cloth having a length h, the height of the fragrance generation section is h. The length L of the flavor-generating sheet wrapped around the wrapping cloth may be shorter than h. Preferably L is the same in all flavour generating tablets. In the case of stacking the flavor-generating sheets as shown in fig. 2A, W is preferably the same for all flavor-generating sheets. As shown in fig. 2C, when the two long sides of the flavor-generating sheet are bent and laminated or when the flavor-generating sheet is bent and laminated, W constituting the flavor-generating sheet of the outermost layer is preferably larger than W constituting the flavor-generating sheet of the innermost layer. In the embodiment shown in fig. 2C, the opposing flavor-generating sheet ends may also contact each other.

3) Surface working

At least one of the plurality of flavor-generating sheets is preferably subjected to surface processing on a part or all of at least one surface. In the present invention, the surface processing means processing for forming a plurality of irregularities on at least one main surface, i.e., the front surface or the back surface of the flavor-generating sheet. The surface processing method is not particularly limited, and known processes such as crimping, embossing, half-cutting, and the like can be used. In the present invention, the crimping process is a process of providing wrinkles in the sheet. For example, by passing the flavor-generating sheet between a pair of rollers having a plurality of projections on the surface thereof, it is possible to perform crimping processing by providing wrinkles extending perpendicularly to the sheet conveying direction on both the surface and the back surface of the flavor-generating sheet. The convex portion provided on the roller extends orthogonally to the sheet conveying direction. The distance between the apexes of the protrusions provided on the roller is preferably 0.5 to 2.0 mm. Therefore, the pitch of the flavor-generating sheets is preferably 0.5 to 2.0 mm. The pitch of the flavor-generating sheets is preferably 1.5 to 20% with respect to the width of the flavor-generating segment. When the average thickness of the sheet is set to T_avIn the case, the height H of the unevenness formed by curling is preferably 1.05T_av～1.59T_av. The height H is defined as the distance from the sheet bottom to the sheet top when the sheet subjected to the crimping process is placed on a horizontal plane. The embossing and the die pressing are processes in which a convex processing tool is pressed against a sheet to form a concave portion on one surface or both surfaces of the sheet, and the half-cutting process is performed on the sheetThe sheet is provided with a notch having a depth enough not to cut the sheet, preferably a depth equal to or less than half the thickness of the sheet, on one or both surfaces of the sheet. A cutter or a laser can be used for the half-cut processing. As described later, when the fragrance generating sheet is a fragrance generating member, the non-contact portion, preferably a gap described later, can be formed efficiently by performing surface processing on the fragrance generating sheet. The pitch between the apexes of the projections of the flavor-generating sheet may be completely the same or different in the same sheet. The pitch between the apexes of the projections of each flavor-generating sheet may be different or the same for each sheet.

Next, the laminated flavor-generating sheet will be described.

1) Laminated multiple fragrance generating sheet

At least one fragrance generating member is configured by laminating a plurality of fragrance generating sheets 10. The number of the stacked flavor-generating sheets 10 is preferably 2 to 15. By setting the number of the fragrance generation sheets to the above number, a sufficient amount of fragrance component can be generated, and a sufficient space can be secured as a gap described later, and the transmission efficiency of generated fragrance can be improved. The total weight of the flavor generating parts 1a and 1b contained in the flavor generating section is preferably 130mg to 685mg, and preferably 200mg to 350 mg. The weight of each flavor-producing sheet 10 is appropriately selected so as to achieve the total weight.

As described above, the flavor generating sheet contains an aerosol source such as glycerin, but the weight of the aerosol source contained in each flavor generating sheet is preferably adjusted so that the aerosol is uniformly delivered throughout the inhalation. For example, as shown in fig. 10(a), a case may be considered in which positions a to C are specified outward from the center of the flavor-generating segment, and sheets having the same thickness are present in the region including the positions. In this case, if the weight of the aerosol source is the same for each patch, the weight of the aerosol source is the same for the average thickness of the patch. Therefore, the amount of aerosol source that can be generated at the A, B, C position can be set to be substantially the same.

On the other hand, in the case where the area including the position has the different thickness of the patch (fig. 10(b)), even if the weight of the aerosol source is the same for each patch, the weight of the aerosol source is different for the average thickness of the patch, and therefore the amount of aerosol source that can be generated at the position A, B, C is different. In this case, if the sheet is designed so as to satisfy the following relationship, the amounts of aerosol sources that can be generated at the position A, B, C can be made substantially the same.

X/a＝Y/b＝Z/c

a: the thickness of the sheet a covering the a position,

x: weight of aerosol source contained in sheet A covering position A

b: the thickness of the sheet B covering the B site,

y: weight of aerosol source contained in sheet B covering position B

c: the thickness of the sheet C covering the position C,

z: weight of aerosol source contained in sheet C covering the C position

Such a design may also be made, for example, by providing a difference in surface finish on the inner and outer surfaces of the sheet. Specifically, a mode in which a plurality of half cuts are provided on the inner surface and a small number of half cuts are provided on the surface is considered.

In addition, in the sheet disposed on the inner side and the sheet disposed on the outer side, by changing the weight of the flavor component and the fragrance component contained in the sheet, the flavor can be changed at a desired timing during the absorption.

Since the flavor-generating sheets are stacked so as to have a non-contact portion between adjacent sheets, a non-contact portion where the flavor-generating sheets do not contact each other is provided between at least one pair of adjacent flavor-generating sheets.

2) Non-contact part

Preferably, two or more contact portions where the flavor-generating sheets contact each other are provided between a pair of adjacent flavor-generating sheets. The non-contact portion formed between the contact portions is referred to as a "gap". A portion or all of the gap preferably extends from the front end to the back end of the scent-generating segment. This can secure a flavor flow path and improve flavor transfer efficiency, and can transfer heat from the heater to the flavor-generating sheet on the outside through the contact portion, thereby improving heat transfer efficiency.

The method of providing the gap between a pair of adjacent flavor-generating sheets is not particularly limited, and for example, the gap can be formed by subjecting at least one flavor-generating sheet to the above-described surface treatment or the like. Specifically, a gap can be provided by a combination of a flavor-generating sheet provided with irregularities by surface processing and a flat flavor-generating sheet (fig. 2d (i)), and by making the positions of the protrusions of the flavor-generating sheets provided with irregularities by surface processing not to be the same, even if the phases of the irregularities are deviated (fig. 2d (ii)). In fig. 2D, C denotes a contact portion and V denotes a gap. The method of shifting the phase is not limited, and examples thereof include a method of changing the pitch of surface processing for each flavor-generating sheet. The contact portion may be bonded or not. In the case where the flavor-generating sheet includes a plurality of projections provided by surface treatment, at least one of the projections may be in contact with an adjacent flavor-generating sheet. The longitudinal direction of the projection formed on the rolled sheet is preferably parallel or substantially parallel to the longitudinal direction of the flavor-producing segment. The longitudinal direction of the projection is a direction in which the ridge extends, and is a direction perpendicular to the sheet conveying direction during processing by the crimping roller.

The maximum value Gmax of the distance between the layers of the adjacent two flavor-generating sheets is preferably larger than the maximum value Tmax of the thickness of at least one flavor-generating sheet in the adjacent two flavor-generating sheets. This situation can be confirmed by the following method. As shown in fig. 2B, in a certain cross section of the flavor generation segment 1, the interlayer distance n formed between the nth sheet and the (n +1) th sheet is measured, and the maximum value g (n) max is determined. Then, the thickness of the nth sheet and the thickness of the (n +1) th sheet are measured, and the maximum values T (n) max and T (n +1) max are determined and compared. The measurement was performed for all layers. For example, when the number of sheets is 4, the measurement is performed for 3 layers. Then, it was confirmed that the following was satisfied in the cross section.

G₍₁₎max＞T₍₁₎max or G₍₁₎max＞T₍₂₎max

G₍₂₎max＞T₍₂₎max or G₍₂₎max＞T₍₃₎max

G₍₃₎max＞T₍₃₎max or G₍₃₎max＞T₍₄₎max

When any cross section is satisfied, the relationship means that the maximum value Gmax of the distance between the two adjacent flavor-generating sheets is larger than the maximum value Tmax of the thickness of at least one flavor-generating sheet of the two adjacent flavor-generating sheets. When the measurement is difficult because the flavor-generating sheet 10 is not fixed, the following measurement is preferably performed. First, the flavor-producing segment 1 is impregnated with a low-viscosity curable resin (e.g., an epoxy resin), and the non-contact portion is filled with the resin, and then the resin is cured to prepare a sample for measurement. Subsequently, the measurement was performed while cutting the sample.

The proportion of the total amount of non-contact portions in the flavor-generating segment (hereinafter, referred to as "void ratio") is preferably 0.10 to 0.40, more preferably 0.15 to 0.36, and particularly preferably 0.25 to 0.33. By setting the porosity to a preferable range, fragrance can be effectively supplied. Further, by setting the porosity to a more preferable range, efficient release of the flavor component contained in the sheet in the flavor generation section can be maintained from the start to the end of the absorption.

3) Heat conducting fin

The flavor generating members 1a and 1b may also have a heat conductive sheet 16. The position of the heat conductive sheet 16 is not limited, but in one embodiment, as shown in fig. 2A, it is preferably exposed to the space 14. As the heat conductive sheet, a metal sheet such as aluminum can be used.

4) Space(s)

As shown in fig. 2A, the fragrance generating section 1 may have a space 14 between the fragrance generating members 1a and 1 b. The flavor generating segment 1 is preferably disposed so that the direction perpendicular to the stacking direction is parallel to the longitudinal direction of the flavor generating article 2, that is, so that the height h is parallel to the longitudinal direction of the flavor generating article 2, and therefore, the space 14 preferably extends also along the longitudinal direction of the flavor generating article 2. The cross-sectional area of the space is preferably 5% to 46%, more preferably 15% to 46%, of the cross-sectional area of the fragrance generating section 1. The center of the space 14 may also be on an axis passing through the center of the cross-section of the fragrance generating section 1, i.e. the central axis, but may also be off the central axis. For example, when the thickness of the fragrance generation section 1 in the stacking direction is 2R, the center O' of the space 14 may be deviated from the center O of the fragrance generation section 1 by about 0.1R to 0.7R in the stacking direction. The position of the center O' of the space 14 can also be deviated from the center O of the fragrance generating section 1 by adjusting the thickness of the fragrance generating parts 1a and 1 b.

While the above description describes the case where two flavor generating members are constituted by a plurality of flavor generating sheets, as described above, one flavor generating member may not be constituted by a plurality of flavor generating sheets. In this case, the flavor generating member may be constituted by one flavor generating sheet 10 or a flavor generating block thicker than the flavor generating sheet. The thickness of the flavor-generating block is not limited, but may be about 2 to 10 times the thickness of the flavor-generating sheet. The flavour-generating block may be prepared, for example, by forming a composition comprising the tobacco material and the binder into a desired shape. Examples of the shape include a cylinder and an elliptic cylinder. Examples of the molding method include methods other than papermaking, such as extrusion molding, injection molding, thick paste foam molding, and molding by 3D printing. The scent generating block can also have an open cell structure that is breathable along the length.

2. Fragrance generating article

Fig. 3 shows one mode of a fragrance-generating article. In fig. 3, 2 is a flavor-producing article, 1 is a flavor-producing segment, 20 is a mouthpiece, 22 is a filter, 24 is a cavity, and 26 is a support member. As described above, the support member and the chamber may be provided in any manner on the fragrance generating article. The mouthpiece 20 is a member having a mouthpiece portion, and may include a filter 22. The size of the mouthpiece 20 is not limited, but it is preferably the same width as the flavor generation section 1 and the length is preferably 26 to 50 mm. In the present invention, a direction toward the suction port portion is sometimes referred to as a downstream direction.

The filter 22 is preferably made of a material generally used in this field, such as a cellulose acetate filter. The length of the filter 22 is preferably 12 to 60% of the total length of the mouthpiece 20.

The chamber 24 is a space, and ventilation may be provided on the side of the cloth covering forming the chamber 24. The chamber 24 has a function of cooling the heated fragrance, appropriately mixing the fragrance with air, and modulating the fragrance. The length of the chamber 24 is preferably 8-77% of the total length of the mouthpiece 20. In addition, the chamber 24 may be replaced with a cooling element. The cooling element may be, for example, a polylactic acid sheet, and a product obtained by crimping a plurality of polylactic acid sheets may be used as the cooling element.

The support member 26 enhances the strength and shape retention of the scent generating article. The support member 26 is preferably made of a material generally used in this field, such as heat-resistant plastic, e.g., cellulose acetate or polyether ether ketone (PEEK), silicon, or ceramics. For example, as shown in fig. 7, the two support members may be arranged such that the main surfaces thereof face each other. The length of the support member 26 is preferably 14 to 77% of the total length of the mouthpiece 20.

3. Fragrance suction system

The fragrance suction system of the present invention is provided with a heater. The heater preferably non-combustively, more preferably electrically, heats the flavour generation segment. The heater preferably includes a heating unit provided with a power supply or the like. Fig. 1 shows one embodiment of the flavor extraction system of the present invention. In the figure, 1 is a flavor generation segment, 20 is a mouthpiece, 22 is a filter, 30 is a heater, and 32 is a heating unit.

The shape of the heater 30 is not limited, and it is preferable to have a shape in which a part of the heater 30 can be disposed in the space 14 of the fragrance generation section. For example, a sheet heater, a flat plate heater, or a cylindrical heater may be used. The sheet heater is a flexible sheet heater, and examples thereof include a heater comprising a film (having a thickness of about 20 to 225 μm) of a heat-resistant polymer such as polyimide. The flat plate heater is a rigid flat plate heater (having a thickness of about 200 to 500 μm), and examples thereof include a heater having a resistance circuit on a flat plate base and a heating portion formed by the resistance circuit. The cylindrical heater is a hollow or solid cylindrical heater, and for example, a heater having a resistance circuit on an outer peripheral surface and a heating portion as the portion is included. The cross-sectional shape of the cylindrical heater may be circular, elliptical, polygonal, rounded polygonal, or the like.

The heater may be arranged arbitrarily, and a preferred embodiment will be described below with reference to fig. 4. Fig. 4 shows a cross section of the aroma extraction system of the invention, viewed from the longitudinal end. In FIG. 4, 30 denotes a heater, and 10 denotes a flavor-generating sheet.

As shown in fig. 4(A, C), the heater 30 is disposed in the space 14. Fig. 4A shows a mode in which the flat plate-like heater 30 is disposed in the space. Although not shown, the flavor generation section 1 preferably has a heat conductive sheet laminated together with the flavor generation sheet 10, and more preferably, the heat conductive sheet and the heater 30 face each other. Thus, the flat plate-like heater is suitable for heating the flavor-generating sheet 10 from the inside.

As shown in fig. 4(B, D), the heater 30 is disposed outside the fragrance generating sheet 10out on the outermost layer. In the case where the flavor generating section 1 includes a wrapping cloth, the heater 30 may be disposed outside the wrapping cloth. Thus, the sheet heater is suitable for a case where the flavor-generating sheet 10 is heated from the outside or from the middle. In this embodiment, the flavor-generating segment 1 also preferably has a heat-conductive sheet laminated together with the flavor-generating sheet 10, and more preferably the heat-conductive sheet is adjacent to the heater 30.

4. Manufacturing method

As described above, the flavor generation segment 1 may be the flavor generation article 2, and here, an article including the flavor generation segment 1 and a filter or the like is described as the flavor generation article 2.

(1) Method for producing flavor-producing segment

The method for producing the flavor-emitting segment 1 of the present invention is not limited, but it is preferably produced through the following steps.

Step A: a step of placing the first flavor-generating member and the second flavor-generating member separately on a base material

And a step B: a step of folding the base material so that the upper surfaces of the two flavor generating members face each other to form a flavor generating section 1

The method is explained with reference to fig. 5. In fig. 5, 100 denotes a fragrance generation segment precursor, 1a denotes a first fragrance generation element, 1b denotes a second fragrance generation element, and 6 denotes a base material. In fig. 5(i), both the first flavor generating element 1a and the second flavor generating element 1b include a plurality of flavor generating sheets 10 stacked in parallel on the substrate with a gap between the adjacent flavor generating sheets 10, but at least one flavor generating element may include a plurality of stacked flavor generating sheets 10 with a gap between the adjacent flavor generating sheets 10. The first flavor generating element 1a and the second flavor generating element 1b are separately mounted. The separate placement means that the fragrance emitting member is placed so that the upper surfaces thereof face each other in the step B. The plurality of stacked flavor-generating sheets 10 may be locally in contact to such an extent that a gap can be formed between the sheets.

Next, the laminated body 100 is bent along the dotted line portion so that the upper surfaces of the two flavor-generating members face each other, thereby forming a rod-shaped flavor-generating segment 1. It is preferable that a space 14 is provided between the first flavor generating element 1a and the second flavor generating element 1b opposed to each other in the flavor generating segment 1. The size of the space 14 may be adjusted according to the thickness of the flavor generating member, or an opening may be provided in the bottom surface of the flavor generating segment 1 obtained in this way, but as shown in fig. 6, the flavor generating segment 1 may be formed using a laminate 100 in which openings 60 are provided in advance in divided portions. The manufacturing method may further include a step of wrapping the flavor-generating segment 1 with wrapping cloth.

In the case of bending and stacking the flavor-generating sheets 10 as shown in fig. 2C, the flavor-generating sheets 10 may be bent in advance and stacked, or flat flavor-generating sheets 10 may be bent after stacked.

The number of folds in step B can be appropriately set according to the manner in which the first flavor generating element 1a and the second flavor generating element 1B are arranged. For example, as shown in fig. 5(ii), the first flavor-generating member 1a and the second flavor-generating member 1b may be arranged on the substrate 6 so that the center lines thereof are not on the same line. Fig. 5(ii) is a view of the fragrance generation segment precursor 100 viewed from above. In this case, the flavor generation segment 1 can be manufactured by folding the dotted line portions of 4 portions.

As shown in fig. 5(iii), a plurality of first flavor-generating components 1a and second flavor-generating components 1b may be disposed on the base 6. In this case, the separate arrangement in the step a means that the first flavor generating member 1a and the second flavor generating member 1b are separately arranged in a direction orthogonal to the conveying direction (indicated by an arrow in the figure) of the base material 6. In this embodiment, after cutting with a single-dot chain line, the flavor generation segment 1 can be produced as shown in fig. 5 (i).

The base material 6 may be made of any material, but preferably has flexibility to such an extent that it can be bent; has barrier properties to such an extent that the fragrance-producing component does not exude to the outer surface. As a preferable material, cigarette paper for cigarettes and tipping paper for cigarette filters satisfying the above characteristics can be used.

(2) Method for producing flavor-generating article

By inserting a filter or the like into the bottom of the flavor-generating segment 1 produced as described above, the flavor-generating article 2 can be produced. Alternatively, the aroma generating item 2 may be manufactured as shown in fig. 7. Fig. 7 is a view of the laminate viewed in the transverse direction. Specifically, a laminate 100 in which the filter element 22 and the cooling element 26 are placed in separate portions is prepared, and the base material is folded so that the upper surfaces of the two flavor generating elements face each other.

Further, the method may further include a step of wrapping the flavor-generating article 2 with wrapping cloth. Alternatively, if the blank 62 is provided sufficiently in the width direction of the base material 6, and the base material is folded, and the blank 62 is folded to form the side wall, the cover cloth can be formed by the base material 6 (fig. 8a (a)). In this embodiment, the base material 6 can be regarded as a wrapping cloth, but a wrapping cloth (outermost member) may be additionally provided on the outer side of the wrapping cloth. Alternatively, a flavor-producing segment wrapped with a wrapper and a filter wrapped with a wrapper may be prepared separately and joined by a known method (fig. 8a (b)). For example, the joint portion is wrapped with cigarette tipping paper or the like so as not to cause a leak, whereby both can be joined.

As shown in fig. 8b (i), an opening may be provided in the blank space 62 to form a heater insertion port 64. As shown in fig. 8b (ii), the blank 62 may be provided with a bent portion 66. As shown in fig. 8b (iii), the strength of the flavor-generating article 2 can be increased by bonding the bent portion 66 to the side wall of the flavor-generating article 2.

(3) Method for manufacturing fragrance suction system 3

By providing the heater 30 in the flavor generation segment 1 or the flavor generation article 2 manufactured as described above, the flavor adsorbing system 3 can be manufactured. The method of disposing the heater 30 is not limited, but as shown in fig. 9, it is preferable to insert the heater 30 into the space 14 of the fragrance generating section 1.