Segment for flavor inhalation article containing terpenoid compound

Abstract

To provide a segment for a flavor inhalation article that suppresses crystallization of fragrance, which damages the product appearance over time.SOLUTION: Provided is a segment for a flavor inhalation article, the segment having a base material to which a molten liquid of a terpenoid compound has been added.SELECTED DRAWING: None

Description

[Technical field]

[0001] The present invention relates to a segment for a flavor inhalation article that contains a terpenoid compound. [Background technology]

[0002] Menthol and other terpenoid compounds are often used as cooling agents in compositions for internal or external use. There is a certain demand for smoking articles containing menthol. For example, Patent Document 1 discloses a method for adding flavorings to tobacco materials, and Patent Document 2 discloses a method for adding flavorings to filters. However, in smoking articles containing menthol, depending on the environmental conditions, menthol crystallizes and adheres to the container, etc., causing deterioration of the apparent quality of the product. As a method for suppressing crystallization, a method for preventing crystals from precipitating outward by increasing the basis weight of the cigarette paper has been proposed (Patent Document 3). Heating treatment is required to suppress crystallization outward. In addition, a method for adding 10 to 50% sterols to menthol has also been proposed (Patent Documents 4 and 5). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 6-277035 [Patent Document 2] Patent No. 4530371 [Patent Document 3] International Publication No. 2020 / 230577 [Patent Document 4] JP 2008-239986 A [Patent Document 5] JP 2008-214233 A Summary of the Invention [Problem to be solved by the invention]

[0004] As described above, various methods for suppressing the crystallization of flavors such as menthol during storage of a product have been proposed, but there is still room for improvement. In view of the above circumstances, an object of the present invention is to provide a filling for a flavor inhalation article that suppresses the crystallization of flavors that would damage the appearance of the product over time. [Means for solving the problem]

[0005] Menthol dissolves in ethanol and propylene glycol, but not in water or glycerin, so its crystallization behavior is presumed to be similar to that of fats and oils. The crystallization of fats and oils occurs when they are placed in a supercooled state below their melting point, and the effect is the same whether they are in a bulk system or an emulsion system. As shown in Figure 1, crystallization and its growth are said to occur through the following stages (Food Engineering Handbook, edited by the Japan Society for Food Engineering, Asakura Publishing Co., Ltd.). 1) Supercooled molecules M collide with each other and repeatedly combine and disperse. 2) Within this, crystal nuclei N appear whose size exceeds the critical radius. 3) Crystallized solid S appears on the surface of the crystal nucleus, forming a solid-liquid interface, and crystal growth continues because the effect of the free energy due to the volume reduction caused by crystallization is greater than the interfacial free energy. 4) The presence of impurities (e.g. tobacco sheets or cigarette papers) causes the crystal nuclei to have more interfaces than menthol alone, promoting crystallization. 5) Furthermore, the crystal nuclei combine together and grow until the crystals become visible to the naked eye.

[0006] Since the melting point of menthol is 42 to 45°C, it is feared that menthol will be in a supercooled state in an environment below 42°C, and then crystallize. However, menthol crystallization that impairs the appearance of the product does not occur in summer when the environmental temperature is about 30°C, but rather occurs in winter. Therefore, the inventors have focused on the fact that menthol exists in a state dissolved in a solvent in a smoking article. As shown in Patent Document 2, flavorings such as menthol are usually dissolved in a solvent such as propylene glycol and added as a solution. Since menthol exists in liquid form as long as the saturated concentration of the solution is not exceeded, crystals do not grow, but it is considered that if the environmental temperature drops, the saturated concentration also drops, and some of the menthol that cannot be dissolved in the solvent precipitates and crystals grow. From the above, the inventors have conceived the idea that if a terpene compound such as menthol exists in a crystalline state in a smoking article, the phenomenon of subsequent crystallization can be reduced, and the inventors have solved the above problem by adding a terpene compound as a melt to a base material.

[0007] The above problems are solved by the present invention described below. Aspect 1 A segment for a flavor inhalation article having a substrate to which a melt of a terpenoid compound has been added. Aspect 2 The segment of embodiment 1, wherein the terpenoid compound is a terpene alcohol. Aspect 3 The segment of embodiment 2, wherein the terpene alcohol is menthol. Aspect 4 A segment according to any one of aspects 1 to 3, wherein the segment is a flavor absorbing segment or a filter segment. Aspect 5 The segment comprises a columnar packing having a radius L as a substrate, The amount of the terpenoid compound present in a region of 0.5 L in a direction perpendicular to the longitudinal direction from the central axis of the packing is defined as C; When the amount of the terpenoid compound present in a region of more than 0.5L to L in a direction perpendicular to the longitudinal direction from the central axis of the segment is E, C / E≧1.25; A segment according to any one of embodiments 1 to 4. Aspect 6 6. The segment of embodiment 5, wherein C / E≧1.5. Aspect 7 The segment of embodiment 6, wherein C / E≧2. Aspect 8 A flavor absorbing segment or a filter segment comprising the segment according to any one of aspects 1 to 7. Aspect 9 A flavor inhalation article comprising the segment according to embodiment 8. Effect of the Invention

[0008] The present invention can provide a filling for a flavor inhalation article that inhibits crystallization of a flavor over time, which deteriorates the appearance of the flavor. [Brief description of the drawings]

[0009] [Figure 1] Diagram outlining crystallization and its growth [Diagram 2] Diagram illustrating the concentration of terpenoid compounds in segments [Diagram 3] FIG. 1 shows the degree of crystallization in Examples and Comparative Examples. [Figure 4] FIG. 1 shows the degree of crystallization in Examples and Comparative Examples. [Diagram 5] Diagram showing the crystallization behavior of menthol melt and menthol solution [Figure 6] FIG. 1 is a diagram showing an embodiment of a non-combustion heating type tobacco flavor inhalation article. [Figure 7] FIG. 1 shows an embodiment of a non-combustion heating type tobacco flavor inhalation system. [Figure 8] FIG. 1 is a diagram illustrating one embodiment of a segment manufacturing method. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] The present invention will be described in detail below. In the present invention, "X to Y" includes the extreme values ​​X and Y.

[0011] 1. Segment for flavor inhalation products The segment for the flavor inhalation article is a member constituting the flavor inhalation article, and in one embodiment, refers to a member having a filler and a wrapper. The segment for the flavor inhalation article has a base material to which a melt of a terpenoid compound is added.

[0012] (1) Terpenoid compounds Terpenoid compounds are terpene derivatives that have polar functional groups such as hydroxyl and carbonyl groups. Terpene is a general term for secondary metabolites of plants, insects, fungi, etc. that have a hydrocarbon skeleton with isoprene as a structural unit. It is a name given to a group of 10-carbon compounds that were originally found in large quantities in essential oils, and therefore has been systematized based on 10 carbons. Terpenes with 10, 15, 20, and 30 carbons are also called monoterpenes, sesquiterpenes, diterpenes, and triterpenes, respectively. In the present invention, monoterpenoids are preferred, and examples thereof include terpene alcohols such as menthol, geraniol, linalool, nerol, bornol, thymol, terpineol, and eucalyptol, menthone, camphor, piperitone, linalyl acetate, menthyl acetate, eucalyptol, and lime oil. Among them, terpene alcohols are preferred, and menthol is more preferred.

[0013] The terpenoid compound is added to the substrate as a melt, which will be described later. The melt is a liquid obtained by placing the terpenoid compound in an environment above its melting point. For example, in the case of a compound that is solid at room temperature (20°C), such as menthol, it refers to a liquid obtained by heating to the melting point (42°C) or higher. In addition, in the case of a compound that is liquid at room temperature (20°C), such as linalool, it refers to the liquid compound itself. The temperature of the melt is not limited as long as it is a temperature at which the terpenoid compound is melted. However, if the temperature is too high, the compound may decompose. From this viewpoint, the temperature of the melt is lower than the decomposition temperature, preferably "melting point + 20°C" or lower, more preferably "melting point + 10°C" or lower.

[0014] The method of adding the terpenoid compound to the substrate is not limited. For example, the melt can be injected or applied to the substrate using a syringe. Alternatively, the substrate can be immersed in the melt to impregnate the substrate with the terpenoid compound.

[0015] The amount of the terpenoid compound is not limited, but can be 0.1 to 10% by weight, and preferably about 3 to 7% by weight, per gram of bone dry weight of the substrate.

[0016] When the terpenoid compound is added to the substrate in this manner, it is possible to avoid crystals growing on the surface of the substrate over time, which would impair the appearance of the product, or crystals growing in the storage container, which would impair the appearance of the product. The reason for this is not limited, but is presumed to be as follows. If the terpenoid compound is present in the segment in a supercooled state, crystals will grow on the surface of the filling over time, or the volatilized terpenoid compound will adhere to the wall of the storage container and grow crystals there. As a result, the appearance of the product will be impaired. However, when a melt of the terpenoid compound is added to the substrate, the terpenoid compound will crystallize and stabilize in the substrate, and crystal growth in other places will be suppressed. As a result, the appearance of the product will be suppressed from being impaired. In one embodiment, the crystallinity of the terpenoid compound in the substrate when the melt is added is 80% or more, 90% or more, or 95% or more. The crystallinity can be quantified by measuring the crystallization peak using thermal analysis such as DSC.

[0017] (2) Base material The substrate is a material constituting a segment. From the viewpoint of exhibiting the effects of the present invention more significantly, the segment is preferably a flavor absorbing segment or a filter segment substrate. In other words, the substrate is preferably a material for a flavor absorbing segment or a material for a filter.

[0018] Examples of the base material for the flavor absorbing segment material include a filler and a wrapper. The filler is composed of tobacco raw materials. The tobacco raw materials are raw materials derived from plants of the genus Nicotiana. The tobacco raw materials are not limited, but are preferably tobacco leaves, lamina, midrib, remaining stem, or shreds from the viewpoint of availability. The tobacco leaves are a collective term for harvested tobacco leaves before aging. One form of aging includes curing. The lamina is tobacco leaves that have been deboned, and the removed midrib is the midrib. The remaining stem is the stem that remains in the field after tobacco harvesting. The shreds are aged tobacco leaves, midribs, etc. that have been chopped into a predetermined size. Among them, the midrib that has been chopped into a predetermined size is also called midrib shreds. These may be subjected to a harmonizing process. The harmonizing process refers to adjusting the state to make the moisture content constant. For example, the lamina can be harmonizing processed by storing it at 22°C and 60% for 24 hours or more. The upper limit of the storage time is not limited, but it is preferably within 30 hours. If the raw material has a high moisture content, the raw material swells, which makes it easier for the medium to diffuse into the cells, and the aroma components present inside the cells to move to the outside. On the other hand, if the raw material has a high moisture content, it becomes necessary to dry it after processing. From these points of view, the moisture content of the raw material after conditioning is preferably 5 to 40% by weight, more preferably 10 to 30% by weight. Alternatively, the tobacco raw material may be a tobacco sheet produced by a known method, or may be shredded or strand shredded from the sheet. Also, a known wrapper can be used.

[0019] The substrate of the filter material may include a filler and a wrapper. The filler may be composed of fibers, such as cellulose acetate fibers, and a filtration material, such as a sheet material, such as paper or a polymer sheet. The wrapper may be any of the known materials.

[0020] The concentration of the terpenoid compound in the filling may be uniform or may vary. For example, when the filling is cylindrical, the concentration can be high at the center axis and low at the periphery. This embodiment is particularly useful when the filling is a tobacco segment filling. This embodiment is explained with reference to FIG. 2. FIG. 2 is a cross-sectional view perpendicular to the longitudinal direction of a cylindrical segment 1 in which a cylindrical filling 21 is filled in a wrapper 22. When the radius of the filling is L, the amount of the terpenoid compound present in a region of 0.5L from the center axis of the filling in the direction perpendicular to the longitudinal direction is C, and the amount of the terpenoid compound present in a region of more than 0.5L to L from the center axis in the direction perpendicular to the longitudinal direction is E. C / E is preferably 1.25 or more, more preferably 1.5 or more, and even more preferably 2 or more.

[0021] 2. Segment manufacturing method The segment is manufactured through a process of adding the melt of the terpenoid compound to the base material. The method of addition is as described above. When the base material is a filler, it is preferable to add the melt to the base material immediately before wrapping with a wrapper. As described above, in a columnar filler, it is preferable that the terpenoid compound concentration is high near the central axis, and adding the melt to the base material immediately before wrapping with a wrapper can efficiently increase the concentration near the central axis. Specifically, a case in which tobacco shreds are used as the base material will be described with reference to FIG. 8. In the figure, 100 is a wrapper that is continuously supplied. 102 is a tobacco shred supplying device that supplies tobacco shreds 104 onto the wrapper. 106 is a melt supplying device that supplies a melt of the terpenoid compound. 108 is a convergence tube that wraps the wrapper to which the tobacco shreds to which the melt has been added are supplied to form a segment precursor 1'. The segment precursor 1' is cut to a desired size. In this manner, a segment 1 equipped with a filler can be manufactured. That is, the segment is produced through the steps of supplying a wrapper, supplying tobacco shreds on the wrapper, supplying the melt to the tobacco shreds, and winding the wrapper with the tobacco shreds through a convergence tube. It is preferable that the wrapper and the tobacco shreds are supplied continuously.

[0022] The same applies when the filler is a filter filler. That is, the filter is manufactured by the steps of supplying a wrapper, supplying a filter material (e.g., cellulose acetate fibers) on the wrapper, supplying the melt to the material, and winding the wrapper with the material through a convergence tube. The wrapper and filter material are preferably supplied continuously.

[0023] 2. Segment for flavor inhalation products (1) Flavor-inhaling segment In one embodiment, the flavor inhalation segment comprises a wrapper and a filling material filled in the wrapper, the filling material being obtained by adding a melt of the terpenoid compound to a substrate. The filling material contains a flavor source. When the flavor source contains a tobacco raw material, the flavor inhalation segment is also called a tobacco segment. A known wrapper can be used. The size of the flavor inhalation segment may also be known.

[0024] (2) Filter segment The filter segment includes a wrapper and a filler formed by adding a melt of the terpenoid compound to a substrate, the filler being filled in the wrapper. In the present invention, the filter segment may be referred to as a "filter." The filler used in the filter includes the filter material described above. A known wrapper can be used. The structure and size of the filter may also be known.

[0025] 3. Flavor suction products In the present invention, the term "flavor inhalation article" refers to an article for a user to inhale a flavor. Among flavor inhalation articles, those containing tobacco or components derived from tobacco are also referred to as "tobacco flavor inhalation article". Tobacco flavor inhalation articles are broadly classified into "combustion type tobacco flavor inhalation article" (also simply referred to as "smoking article") that generates a flavor by combustion, and "non-combustion type tobacco flavor inhalation article" that generates a flavor without combustion. Furthermore, non-combustion type tobacco flavor inhalation articles are broadly classified into "non-combustion heating type tobacco flavor inhalation article" that generates a flavor by heating, and "non-combustion non-heating type tobacco flavor inhalation article" that generates a flavor without heating. The segment containing the filling of the present invention is suitable for combustion type tobacco flavor inhalation article (smoking article) and non-combustion heating type tobacco flavor inhalation article. As the smoking article, a known article having a tobacco segment and a filter segment can be used. Hereinafter, the flavor inhalation article will be described using a combustion heating type tobacco flavor inhalation article as an example.

[0026] FIG. 6 shows one embodiment of a non-combustion heating type tobacco flavor inhalation article. As shown in the figure, the non-combustion heating type tobacco flavor inhalation article 20 includes a tobacco segment 20A, a cylindrical cooling segment 20B having perforations on the circumference, and a filter segment 20C. The non-combustion heating type tobacco flavor inhalation article 20 may include other members. The axial length of the non-combustion heating type tobacco flavor inhalation article 20 is not limited, but is preferably 40 to 90 mm, more preferably 50 to 75 mm, and even more preferably 50 to 60 mm or less. The circumferential length of the non-combustion heating type tobacco flavor inhalation article 20 is preferably 16 to 25 mm, more preferably 20 to 24 mm, and even more preferably 21 to 23 mm. For example, an embodiment in which the tobacco segment 20A has a length of 20 mm, the cooling segment 20B has a length of 20 mm, and the filter segment 20C has a length of 7 mm can be mentioned. The lengths of these individual members can be appropriately changed according to the manufacturing suitability, the required quality, and the like. FIG. 6 shows an embodiment in which the first segment 25 is disposed, but it is also possible to dispose the first segment 25 and to dispose only the second segment 26 downstream of the cooling segment 20B.

[0027] 1) Tobacco segment 20A The filler 21 in the tobacco segment 20A is prepared as described above. The filler 21 contains tobacco raw materials as a base material, and is therefore hereinafter also referred to as "tobacco filler" 21. The method of filling the tobacco filler 21 into the wrapper 22 is not particularly limited, and for example, the tobacco filler 21 may be wrapped in the wrapper 22, or the tobacco filler 21 may be filled into a cylindrical wrapper 22. When the tobacco filler 21 has a longitudinal direction such as a rectangular shape, it may be filled so that the longitudinal direction is in an unspecified direction within the wrapper 22, or may be filled so that it is aligned in the axial direction of the tobacco segment 20A or aligned in a direction perpendicular thereto. When the tobacco segment 20A is heated, the tobacco components, aerosol-generating base material, and water contained in the tobacco filler 21 are vaporized and are available for inhalation.

[0028] 2) Cooling segment 20B The cooling segment 20B is preferably constructed of a tubular member. The tubular member may be, for example, a cardboard tube 23 formed by processing cardboard into a cylindrical shape. The cooling segment 20B may also be formed of a sheet of thin material that is wrinkled and then pleated, gathered, or folded to form a channel. For example, such a material may be a sheet material selected from the group consisting of polyethylene, polypropylene, polyvinyl chloride, polyethylene terephthalate, polylactic acid, cellulose acetate, and aluminum foil. The total surface area of ​​the cooling segment 20B is appropriately adjusted taking into account the cooling efficiency, and may be, for example, 300 to 1000 mm. 2 / mm. The cooling segment 20B is preferably provided with perforations 24. The presence of the perforations 24 allows outside air to be introduced into the cooling segment 20B during inhalation. As a result, the vaporized components of the aerosol generated by heating the tobacco segment 21A come into contact with the outside air, and as their temperature drops, they are liquefied, forming an aerosol. The diameter (diameter) of the perforations 24 is not particularly limited, but may be, for example, 0.5 to 1.5 mm. The number of perforations 24 is not particularly limited, and may be one or two or more. For example, a plurality of perforations 24 may be provided on the circumference of the cooling segment 20B.

[0029] The cooling segment 20B may be rod-shaped with an axial length of, for example, 7 to 28 mm. For example, the axial length of the cooling segment 20B may be 18 mm. The cooling segment 20B may have a substantially circular axial cross-sectional shape with a diameter of 5 to 10 mm. For example, the diameter of the cooling segment may be about 7 mm.

[0030] 3) Filter segment 20C The configuration of the filter segment 20C is not limited as long as it includes the above-mentioned filler. The filler used in the filter is hereinafter also referred to as "filter filler". For example, the filter segment 20C may be composed of one or more filler layers. The outside of the filler layer may be wrapped with one or more wrappers. The airflow resistance of the filter segment 20C can be appropriately changed depending on the amount, material, etc. of the filter filler filled in the filter segment 20C. For example, when the filter filler is cellulose acetate fiber, the airflow resistance can be increased by increasing the amount of cellulose acetate fiber filled in the filter segment 20C. The packing density of the cellulose acetate fiber is 0.13 to 0.18 g / cm. 3 The airflow resistance is a value measured by an airflow resistance measuring device (product name: SODIMAX, manufactured by SODIM).

[0031] The circumferential length of the filter segment 20C is not particularly limited, but is preferably 16 to 25 mm, more preferably 20 to 24 mm, and even more preferably 21 to 23 mm. The axial length (horizontal direction in FIG. 6) of the filter segment 20C can be selected from 4 to 10 mm, and is selected so that the airflow resistance is 15 to 60 mmH2O / seg. The axial length of the filter segment 20C is preferably 5 to 9 mm, and more preferably 6 to 8 mm. The cross-sectional shape of the filter segment 20C is not particularly limited, but may be, for example, a circle, an ellipse, a polygon, or the like. In addition, a destructible capsule containing a fragrance, fragrance beads, or a fragrance may be directly added to the filter segment 20C.

[0032] The filter segment 20C may have a center hole portion as the first segment 25. The center hole portion is composed of a first packed layer 25a having one or more hollow portions and an inner plug wrapper (inner wrapping paper) 25b that covers the packed layer. The center hole portion has a function of increasing the strength of the mouthpiece portion. The center hole portion may not have the inner plug wrapper 25b, and its shape may be maintained by thermoforming. The filter segment 20C may have a second segment 26. The second segment 26 is composed of a second packed layer 26a and an inner plug wrapper (inner wrapping paper) 26b that covers the packed layer. The second packed layer 26a may be a rod with an inner diameter of φ5.0 to φ1.0 mm, which is packed with cellulose acetate fibers at a high density and hardened by adding a plasticizer containing triacetin in an amount of 6 to 20% by weight based on the weight of cellulose acetate. Since the second packed layer has a high fiber packing density, air and aerosol flow only through the hollow portion during inhalation, and hardly flow through the second packed layer. Since the second filling layer inside the center hole portion is a fiber filling layer, the feel from the outside during use is less likely to cause discomfort to the user.

[0033] The first filling layer 25a and the second filling layer 26a are connected by an outer plug wrapper (outer wrapping paper) 27. The outer plug wrapper 27 can be, for example, a cylindrical paper. The tobacco segment 20A, the cooling segment 20B, and the first filling layer 25a and the second filling layer 26a that have already been connected are connected by a mouthpiece lining paper 28. These connections can be made, for example, by applying a glue such as a vinyl acetate glue to the inner surface of the mouthpiece lining paper 28 and winding the three components. These components may be connected in multiple parts using multiple lining papers. Either or both of the first filling layer 25a and the second filling layer 26a can contain the filter filling material, but from the viewpoint of ease of manufacture, it is preferable that the second filling layer 26a contains the filter filling material.

[0034] A combination of a non-combustion heating type tobacco flavor inhalation article and a heating device for generating an aerosol is also referred to as a non-combustion heating type tobacco flavor inhalation system. An example of the system is shown in Fig. 7. In the figure, the non-combustion heating type tobacco flavor inhalation system includes a non-combustion heating type tobacco flavor inhalation article 20 and a heating device 10 that heats a tobacco segment 20A from the outside.

[0035] The heating device 10 includes a body 11, a heater 12, a metal tube 13, a battery unit 14, and a control unit 15. The body 11 has a cylindrical recess 16, and the heater 12 and the metal tube 13 are disposed at a position corresponding to the tobacco segment 20A to be inserted therein. The heater 13 may be a heater using electric resistance, and is heated by being supplied with power from the battery unit 14 in response to an instruction from a control unit 15 that controls temperature. The heat generated by the heater 12 is transferred to the tobacco segment 20A through the metal tube 13, which has high thermal conductivity. In the figure, the heating device 10 is shown as heating the tobacco segment 20A from the outside, but may be heating from the inside. The heating temperature by the heating device 10 is not particularly limited, but is preferably 400°C or less, more preferably 150 to 400°C, and even more preferably 200 to 350°C. The heating temperature refers to the temperature of the heater of the heating device 10. EXAMPLES

[0036] [Example 1] Tobacco shreds were wrapped in a wrapper by a conventional method to produce tobacco segments in which the wrapper was filled with tobacco shreds. However, immediately before the wrapping, menthol was added to the tobacco shreds to add flavor. The flavoring was carried out by garniture injection (GI), in which menthol was heated above its melting point (45°C) and the resulting molten liquid was injected into the tobacco shreds using a nozzle. The amount of flavoring added was 15 mg per 1 g of bone dry weight of the tobacco shreds.

[0037] The tobacco segments were sealed in a container and stored at 5°C for 4 days, and the state of adhesion of menthol crystals to the container was observed. As a result, as shown in Figure 3(1), no crystals were observed.

[0038] The radius of the filling in the tobacco segment is L, and the amount of menthol present in a region of 0.5 L from the central axis of the tobacco segment in a direction perpendicular to the longitudinal direction, and the amount of menthol present in a region of more than 0.5 L to L in a direction perpendicular to the longitudinal direction were quantified as follows. [Menthol analysis conditions] A certain amount of tobacco shreds was collected from the above area, and 40 mL of methanol containing an internal standard (n-octadecane) was added and shaken for 3 hours for extraction. The supernatant was collected in a vial and measured by GC-FID. Column: DB-ALC1 30m, 0.32mm, 1.8μm

[0039] The results are shown in Table 1. It was clear that the amount of menthol in the center (C) was about twice as much as the amount of menthol in the outer part (E).

[0040] [Table 1]

[0041] [Comparative Example 1] A tobacco segment was produced in the same manner as in Example 1, except that flavoring was performed using a menthol solution instead of the GI method. The tobacco segment was sealed in a container and stored at 5°C for 4 days, and the state of adhesion of menthol crystals to the container was observed. As a result, the adhesion of crystals was confirmed, as shown in Figure 3 (2).

[0042] [Example 2] Tobacco segments were prepared in the same manner as in Example 1, except that the ratio of the menthol content C in the center to the menthol content E in the outer portion was set to 1.25 to 1.5 and 2.0. Combustion-type smoking articles were prepared using the tobacco segments by a standard method. The smoking articles were stored at 5°C for 4 days, and then the cross section of the tip of the tobacco segment was observed. As shown in Figures 4(1) and (2), no crystal adhesion was observed.

[0043] [Comparative Example 2] A comparative tobacco segment was prepared in the same manner as in Comparative Example 1, and a combustion-type smoking article was prepared and evaluated in the same manner as in Example 2, except that the comparative tobacco segment was used. As shown in Figure 4 (3), adhesion of crystals was observed.

[0044] [Reference example] The crystallization behavior of menthol melt was observed when it was left at room temperature. As a result, crystallization was confirmed as shown in Figure 5 (1). On the other hand, the crystallization behavior of a solution obtained by dissolving menthol in ethanol was observed when it was left at room temperature. As a result, as shown in Figures 5 (2) and (3), no crystallization was confirmed. Figure 5 (3) shows a saturated solution, and it is clear from this result that menthol exists in a supercooled state in the solution. [Explanation of symbols]

[0045] N: Crystal nuclei larger than the critical radius M Supercooled molecules S Crystallized solid 1 Segment with filling 10 Heating device 11. Body 12 Heater 13 Metal tube 14 Battery unit 15 Control Unit 16 Recess 17 Ventilation holes 20 Non-combustion heating type flavor inhalation products 20A Tobacco Segment 20B Cooling segment 20C Filter Segment 21 Tobacco filling 22 Rapper 23 Paper tube 24 perforation 25 First Segment 25a 1st packed bed 25b Inner plug wrapper 26 Second Segment 26a 2nd packed bed 26b Inner plug wrapper 27 Outer plug wrapper 28 Lining Paper 100 consecutively delivered wrappers 102 Tobacco cutting supply device 104 Tobacco Cutting 106 Melt supply device for supplying melt of terpenoid compound 108 Convergence Tube 1' segment precursor

Claims

1. A segment for a flavor inhalation article having a substrate to which a melt of a terpenoid compound has been added.

2. The segment of claim 1 , wherein the terpenoid compound is a terpene alcohol.

3. The segment of claim 2 , wherein the terpene alcohol is menthol.

4. The segment according to any one of claims 1 to 3, wherein the segment is a flavor absorbing segment or a filter segment.

5. The segment comprises a columnar packing having a radius L as a substrate, The amount of the terpenoid compound present in a region of 0.5 L in a direction perpendicular to the longitudinal direction from the central axis of the packing is defined as C; When the amount of the terpenoid compound present in the region of more than 0.5L to L in the direction perpendicular to the longitudinal direction from the central axis of the segment is E, C / E≧1.25; A segment according to any one of claims 1 to 4.

6. 6. The segment of claim 5, wherein C / E > 1.

5.

7. The segment of claim 6 , wherein C / E≧2.

8. A flavour absorbing segment or a filter segment comprising a segment according to any one of claims 1 to 7.

9. A flavor inhalation article comprising the segment according to claim 8.

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