TW201601644A - Filter for tobacco product and tobacco product - Google Patents

Abstract

The present invention provides a filter for tobacco product comprising a plurality of segments with different inner structure and provided a continuously in the length direction of the tobacco product, and comprising: a fragrance segment containing a hollow space covered by a paper article and holding fragrance capsules encapsulating fragrance in the hollow space, a first ring segment provided at a position closer to a cut tobacco end than the fragrance segment and having a ventilation hole provided at roughly the center of the cross section of the filter, and a second ring segment provided at a position closer to a mouthpiece end than the fragrance segment and having a ventilation hole with an inner radius smaller than the radius of the fragrance capsule provided at roughly the center of the cross section of the filter. The first ring segment and the second ring segment can block the ventilation holes by pushing in a radius direction of the filter, with the fragrance being carried, and have a predetermined recovering force.

Description

Filters and tobacco products for tobacco products

This invention relates to filters and tobacco products for use in tobacco products.

In the past, a cigarette in which a capsule containing a flavoring agent or the like and which can be broken by a pressure applied by a smoker is placed in a filter has been proposed (for example, Patent Document 1). Further, a technique of changing a fragrance by incorporating a special mechanism has been proposed (for example, Patent Documents 2 and 3). Further, there has been proposed a technique for adjusting the flavor of smoke or the amount of smoke by changing the constitution of the filter or the material of the filter (for example, Patent Documents 4 and 5).

Prior technical literature Patent literature

Patent Document 1: Japanese Patent Publication No. 2007-520204

Patent Document 2: Japanese Patent Publication No. 2013-515475

Patent Document 3: Japanese International Publication No. 2012/156697

Patent Document 4: Japan International Publication No. 2013/068398

Patent Document 5: Japanese Laid-Open Patent Publication No. 2003-274918

Conventionally, in order to reversibly change the strength of the fragrance, it is necessary to incorporate a special mechanism into the cigarette or to complicate the configuration of the filter itself.

The present invention has been made in view of the above problems, and an object thereof is to provide a technique capable of switching the intensity of flavor by a simple configuration.

A filter for a tobacco product according to one aspect of the present invention comprises a plurality of sections having different internal structures connected in the longitudinal direction of the tobacco product. The invention comprises: a fragrance segment containing a cavity covered by a paper member and holding a perfume capsule containing the fragrance in the cavity; disposed closer to the tobacco side than the fragrance segment and along a substantially center of the cross section of the filter a first annular section provided with a vent hole; and a second vent hole disposed closer to the suction port side than the fragrance section and having a smaller inner diameter than the diameter of the fragrance capsule along the approximate center of the transverse section of the filter Ring segment. The first annular segment and the second annular segment can block the vent hole by the radial pressing of the filter while holding the fragrance, and have a predetermined restoring force.

In this manner, the user presses or liberates a ring segment that is part of the filter with a finger, thereby blocking or opening the vent. Then, since the ring segment carries the fragrance, the strength of the fragrance can be switched in both directions by the user's operation. That is, the switching of the flavor intensity can be achieved with a simple configuration.

Further, in the first annular segment and the second annular segment, the sectional area of the vent hole can be restored to 0.3 mm ² or more after 30 seconds from the release of the pressing. In particular, when the cross-sectional area of the vent hole is restored to 0.3 mm ² or more after 30 seconds from the liberation of the pressing, the user can sufficiently enjoy the change in the flavor intensity during normal smoking. In other words, when the cross-sectional area of the vent hole is restored to 0.3 mm ² or more within 30 seconds, the user can sufficiently feel the change in the flavor intensity at the next suction (suction).

Further, the vent holes of the first annular segment and the second annular segment may have a diameter of 2.0 mm or more and 6.0 mm or less, and the lengths of the filters of the first annular segment and the second annular segment may be long in the longitudinal direction. It can be 15.0 mm or more and 32.0 mm or less. Specifically, according to this configuration, the switching of the flavor intensity can be sufficiently felt.

Further, the first annular segment, the second annular segment, and the fragrance segment can be formed by coating the outer periphery thereof with a paper member having oil repellency or water repellency. In this way, the fragrance can be inhibited from oozing out to the periphery of the tobacco product. Further, according to the paper member having oil repellency or water repellency, the strength of the filter portion can be generally improved as compared with the paper member used in the conventional paper roll.

The filter may further include a filter segment not provided with a vent hole on the side closest to the tobacco. In this way, the adsorption of tar or nicotine and the cooling effect of the smoke can be obtained, and when the tobacco rod containing the tobacco is connected to the filter, the fragrance component can be inhibited from moving to the cut tobacco. Further, by providing a normal filter segment having no through hole, the tobacco yarn can be restricted from moving toward the suction port side through the vent hole. Further, a vent hole (through hole) may be provided in the roll paper or the filter paper wound around the filter segment to adjust the ventilation resistance of the entire filter. In the case where the first annular segment, the second annular segment, and the fragrance segment have a cavity inside, it is difficult to adjust the overall ventilation resistance even if a ventilation hole is provided. The above-described condition of the filter segment is suitable for the adjustment of the ventilation resistance.

When the fragrance is menthol, the menthol may be added in an amount of 10,000 ppm/cig. or more and 40,000 ppm/cig. or less. If it is in this range, sufficient switching of the flavor intensity can be felt, and crystallization or exudation of menthol to the paper material can be suppressed.

Further, a tobacco product according to another aspect of the present invention has a stem portion including shredded tobacco and the above filter. According to this tobacco product, the switching of the flavor intensity can be achieved with a simple configuration.

Means for solving the problems of the present invention can also be used in combination.

According to the present invention, it is possible to provide a technique capable of switching the intensity of flavor by a simple configuration.

1‧‧ ‧ Cigarettes

11‧‧‧Tobacco rod

12‧‧‧ Filter section

121‧‧‧Filter section

122‧‧‧ ring segment (1st ring segment)

123‧‧‧Cylinder section

124‧‧‧ ring segment (2nd ring segment)

125‧‧‧Roll paper

126‧‧‧ Spice Capsules

1221, 1241‧‧‧Ring

1222, 1242‧‧ vents

Fig. 1 is a perspective view showing an example of a cigarette.

Fig. 2 is a perspective view showing an example of a filter portion.

Fig. 3 is a longitudinal sectional view showing an example of a filter portion.

Fig. 4 is a longitudinal sectional view showing an example of a filter portion after pressing.

Fig. 5 is a longitudinal sectional view of a filter portion for explaining the measurement of the degree of restoration.

Fig. 6 (A) to (C) are schematic views for explaining the steps of measuring the degree of restoration.

Fig. 7 is a table showing the results of the recovery rate (area after weighting/area before weighting) for the sample.

Fig. 8 is a longitudinal sectional view of a filter portion for explaining a configuration of a filter portion used for functional evaluation.

Fig. 9 is a table for explaining the constitution of the filter portion used for the functional evaluation.

Figure 10 is a table showing the results of the sensory evaluation.

Figure 11 is a line graph showing the results of the functional evaluation.

Fig. 12 is a bar graph showing the difference between the average value of the mint sensation at the time of opening and the closed hole in different batches.

Fig. 13 is a table showing the results of evaluation of the cooling sensation of the mint when the amount of the fragrance added was 5,000 ppm/cig. and the length of the CH was 15.0 mm.

Fig. 14 is a table showing the evaluation results of the mint sensation when the amount of the fragrance added was 5,000 ppm/cig. and the length of the CH was 20.0 mm.

Fig. 15 is a table showing the results of evaluation of the cooling sensation of the mint when the amount of the fragrance added was 5,000 ppm/cig. and the length of the CH was 27.0 mm.

Fig. 16 is a table showing the results of evaluation of the cooling sensation of the mint when the amount of the fragrance added was 5,000 ppm/cig. and the length of the CH was 32.0 mm.

Figure 17 shows that when the amount of flavor added is 5,000 ppm/cig., the CH in the longitudinal column and the CH in the transverse column are the difference between the average value of the cooling sensation in the opening and the average value of the cooling sensation in the closed cell. table.

Fig. 18 is a table showing the results of evaluation of the cooling sensation of the mint when the amount of the fragrance added was 10,000 ppm/cig. and the length of the CH was 15.0 mm.

Fig. 19 is a table showing the results of evaluation of the cooling sensation of the mint when the amount of the fragrance added was 10,000 ppm/cig. and the length of the CH was 20.0 mm.

Figure 20 shows the amount of flavor added is 10,000ppm/cig., CH length is Table of evaluation results of mint coolness at 27.0 mm.

Fig. 21 is a table showing the results of evaluation of the cooling sensation of the mint when the amount of the fragrance added was 10,000 ppm/cig. and the length of the CH was 32.0 mm.

Fig. 22 shows that when the amount of flavor added is 10,000 ppm/cig., the CH in the longitudinal column and the CH in the transverse column are the difference between the average value of the cooling sensation of the mint in the opening and the average value of the cooling sensation in the closed cell. table.

Hereinafter, embodiments of the cigarette of the present invention will be described based on the drawings.

"Implementation" <The composition of cigarettes>

Fig. 1 is a perspective view showing an example of the cigarette of the embodiment. The cigarette 1 has an almost cylindrical shape and includes a tobacco rod 11 and a filter portion (also referred to simply as "filter") 12. The tobacco rod 11 is formed by wrapping a tobacco yarn in a roll paper. The filter portion 12 is formed by wrapping a raw material paper and a molded paper roll with a fiber or the like formed of a fibrous material such as cellulose acetate, and retaining a capsule containing the fragrance inside. In the present embodiment, the unit of the constituent portion in which the cigarette 1 is connected in the axial direction is referred to as a segment. The axial direction means the longitudinal direction of the cigarette 1. The plurality of segments are wound by a paper member such as a molded paper to form the filter portion 12. Further, the tobacco rod 11 and the filter portion 12 are further wound and connected by a paper material like a filter paper, thereby forming the cigarette 1. The curved surface of the cigarette 1 having almost cylindrical shape (that is, the tobacco rod 11 and the filter portion 12) is also referred to as a side surface. Further, as described later, for example, menthol can be used as the fragrance.

Fig. 2 is a perspective view showing an example of the filter unit 12 of the present embodiment. The filter portion 12 includes a filter segment 121, an annular segment 122, a cavity segment 123, an annular segment 124, and a roll paper 125. The filter portion 12 is formed by winding a side surface thereof with a roll paper 125 to join a plurality of segments. The ring segment 122 is also referred to as a first ring segment or CH (Center Hole) 1, and the ring segment 124 is referred to as a second ring segment or CH (Center Hole) 2. The filter section 121 is formed by a generally cylindrical acetate filter. Further, the cylindrical annular segment 122 is provided with an acetate filter through which a vent hole 1222 is formed along a substantially center of a cross section thereof (that is, a cross section parallel to the bottom surface and the upper surface of the filter portion 12). The mouth is formed. An annular portion formed by the filaments around the vent hole 1222 is also referred to as an annular portion 1221. The cavity section 123 is a region where the inside becomes a void, and the fragrance capsule 126 is held inside. The fragrance capsule 126 is, for example, a capsule containing a liquid or powdery flavor component. Further, the annular section 124 is formed by an acetate filter provided with a vent hole 1242 penetrating along a substantially center of a cross section of the cylindrical shape. The cross-sectional surface has an inner diameter of the almost circular vent hole 1242. Since the diameter of the fragrance capsule 126 is smaller, the fragrance capsule 126 cannot move toward the suction side. An annular portion formed by the filaments around the vent hole 1242 is also referred to as an annular portion 1241. Conveniently, the cavity section 123 of the fragrance capsule is also referred to as the fragrance section.

When the perfume is in the form of a liquid, an aqueous or oily fragrance can be used. Further, the user can destroy the fragrance capsule 126 by pressing the fragrance capsule 126 or the like from the outside of the filter portion 12. When the fragrance capsule 126 is destroyed, the fragrance component inside the fragrance capsule 126 is released, and the fragrance ingredient is It is carried on the annular segment 122 and the annular segment 124. In addition, at least a portion of the flavoring component is vaporized or sprayed, and the user can attract the component to feel the flavor. The fragrance capsule 126 can be made using established techniques.

The annular segment 122 and the annular segment 124 of the present embodiment can block (close) the vent hole 1222 and the vent hole 1242 by pressing in the radial direction, and have a predetermined restoring force, and open the hole without applying a force. .

<action>

3 and 4 are longitudinal cross-sectional views showing an example of the filter portion 12. Fig. 3 shows a normal state in which no force is applied to the filter portion 12. That is, in the filter portion 12 shown in Fig. 3, the vent hole 1222 and the vent hole 1242 pass through the center of the annular segment 122 and the annular segment 124. Fig. 4 is a view showing an example of a state in which the user presses the filter portion 12 in the radial direction of the cross section. That is, the vent hole 1222 and the vent hole 1242 are closed at the vicinity of the center in the longitudinal direction of the filter portion 12. At this time, the fragrance capsule 126 existing inside the cavity section 123 is pinched by the inner side of the roll paper 125, and the fragrance component contained therein is released. In Fig. 4, the arrow indicates the direction of the force applied to the filter portion 12 by the user's pressing. Further, the annular segment 122 and the annular segment 124 of the present embodiment have a predetermined restoring force, and when the force is released from the pressed state shown in Fig. 4, the force is shifted to the unapplied force shown in Fig. 3. State. That is, the opening state of FIG. 3 and the closed state of FIG. 4 can be switched by the user's motion.

In the state of no force shown in Fig. 3, mainstream smoke is mainly introduced into the use through the vent hole 1222 and the vent hole 1242 during smoking. The mouth of the person. The arrow with a single dotted line indicates the orientation of the mainstream smoke that is attracted by the user. On the other hand, in the pressed state shown in FIG. 4, the mainstream smoke is introduced into the oral cavity of the user through a part of the annular portion 1221 and the annular portion 1241. Here, since the annular portion 1221 and the annular portion 1241 carry the fragrance, in the pressed state shown in Fig. 4, more spices can be provided than the state in which the force is not applied as shown in Fig. 3 The ingredients are introduced into the mouth of the user. That is, in the cigarette 1 of the present embodiment, the user presses or liberates the annular segment 122 and the annular segment 124 which are a part of the filter 12 with a finger, whereby the flavor intensity can be switched in both directions.

<Structure of annular segment and recovery of vent hole>

Next, the result of measuring the degree of restoration of the sectional area of the vent hole when the diameter of the vent hole and the axial direction of the annular segment and the cavity segment (the longitudinal direction of the filter) are changed. Fig. 5 is a longitudinal cross-sectional view showing a part of the filter portion 12 for explaining the measurement of the degree of restoration. Fig. 5 is a longitudinal cross-sectional view showing a portion of the filter portion 12 integrally formed by winding the annular segment 122, the cavity segment 123, and the annular segment 124 with the roll paper 125. In the measurement of the degree of restoration, the diameter of the vent hole 1222 of the annular segment 122 and the diameter of the vent hole 1242 of the annular segment 124 are the same, and it is called a CH (Center Hole) diameter. Further, the length in the axial direction of the annular segment 122 (in other words, the length of the vent hole 1222) is referred to as CH length 1, and the length in the axial direction of the cavity segment 123 is referred to as Cavity length. Similarly, the length in the axial direction of the annular segment 124 (in other words, the length of the vent hole 1242) is referred to as CH length 2.

The details of the annular segment and the cavity segment of the measuring object are as follows Hereinafter, the diameters of the vent hole 1222 and the vent hole 1242 are 2.0 mm, 3.2 mm, 5.0 mm, and 6.0 mm. Further, the length in the axial direction of the annular segment is 5.0 mm, 7.0 mm, and 14.0 mm. The specification (specification) of the fiber yarn is set to 5.0Y47000 and the plasticizer dose is 12% for the user who uses the general filter. The outer diameter of the cross section of the annular section 122, the cavity section 123, and the annular section 124 is about 7.5 mm, which is the same as that of a general cigarette.

Here, "5.0" indicating the specification of the fiber yarn indicates that the single fineness is 5.0 denier, "Y" indicates that the cross-sectional shape is Y-shaped, and "47000" indicates that the total fineness is 47,000 denier. The general fiber used in the filter has a single fineness of about 1.5 to 8.0 denier, and the cross-sectional shape is circular, elliptical, Y-shaped, X-shaped, I-shaped, etc., and the total fineness is about 15,000 to 50,000 dan. Ni.

The measurement system was a submersible instrument "RE2-33005S" (manufactured by Yamato Corporation). Further, the plunger size was set to 35 mm, and the compression speed was set to 1.0 mm/sec. The image analysis system uses the image analysis software "WinRoof" (manufactured by Mitani Corporation). The environmental conditions were set to a temperature of 22 ° C ± 2 ° C and a humidity of 60 % ± 5% RH.

Figure 6 is a diagram for explaining the measurement procedure. The measurement steps are as shown in the following steps (1) to (9).

(1) 20 μl of ethanol was added to the annular portion 1221 of the annular segment 122 and the annular portion 1241 of the annular segment 124 for 30 seconds.

(2) As shown in the upper stage (A) of FIG. 6, the cross-sectional shape of the vent hole 1222 and the vent hole 1242 is photographed by the camera 2 (that is, the cylindrical annular section 122, the cavity section 123, and the cavity section 123 are viewed from the bottom surface or the upper surface, And the shape of the vent hole 1222 and the vent hole 1242 in the annular section 124). Vent profile, from the ring segment 122 And shooting on both sides of the ring segment 124.

(3) As shown in the middle section (B) of Fig. 6, the short side direction (i.e., the radial direction of the transverse section) of the annular section 122, the cavity section 123, and the annular section 124 is compressed by the plunger 3. (added).

(4) When the compressive stress of the annular segment 122, the cavity segment 123, and the annular segment 124 reaches 60 Newtons (N), the compressed state is maintained for 10 seconds at the time.

(5) As shown in the lower section (C) of Fig. 6, the annular segment 122 is liberated from the compression, and the state in which the force is not applied is continued for 30 seconds.

(6) The above (3) to (5) (that is, (B) and (C) of Fig. 6) were repeated 7 times in total.

(7) The cross-sectional shape of the vent hole 1222 and the vent hole 1242 is taken by the method of the above (2).

(8) The cross-sectional area of the vent hole 1222 and the vent hole 1242 taken in the above (2) and (7) was measured using an image analysis software.

(9) For the other samples (the annular segment 122, the cavity segment 123, and the annular segment 124) which were produced in the same specifications, the above-mentioned (1) to (8) were repeated five times in total, and the average of the measured values was calculated.

60N is the finger grip of the index finger and thumb of the average male. In addition, the number of repetitions of 7 times is the average number of suctions (attractions) of one cigarette.

Fig. 7 is a table showing the results of the above-described measurement using the following samples (1) to (7), and the results of the recovery rate (area after weighting/area before weighting) were obtained. As long as the vent hole is not crushed and cannot be recovered at all (that is, as long as the recovery rate is not almost zero), a certain degree of flavor intensity switching can be felt.

(1) CH diameter: 2.0 mm, CH length 1: 5.0 mm, Cavity length: 5.0 mm, CH length 2: 14.0 mm

(2) CH diameter: 3.2 mm, CH length 1: 5.0 mm, Cavity length: 5.0 mm, CH length 2: 14.0 mm

(3) CH diameter: 3.2 mm, CH length 1: 5.0 mm, Cavity length: 2.5 mm, CH length 2: 14.0 mm

(4) CH diameter: 2.0 mm, CH length 1: 7.5 mm, Cavity length: 5.0 mm, CH length 2: 7.5 mm

(5) CH diameter: 3.2 mm, CH length 1: 7.5 mm, Cavity length: 5.0 mm, CH length 2: 7.5 mm

(6) CH diameter: 5.0 mm, CH length 1: 7.5 mm, Cavity length: 5.0 mm, CH length 2: 7.5 mm

(7) CH diameter: 6.0 mm, CH length 1: 7.5 mm, Cavity length: 5.0 mm, CH length 2: 7.5 mm

As shown in the row of the recovery rate, when the CH diameter is 5.0 mm, the recovery rate is the highest, and when the CH diameter is less than 5.0 mm, the recovery rate increases as the CH diameter increases. However, even if the CH diameter is 2.0 mm, the vent holes are not crushed and cannot be recovered. Therefore, the CH diameter can be arbitrarily determined within a range of 2.0 mm or more and 6.0 mm or less. Further, according to the comparison between the sample (2) and the sample (3), when the Cavity length was 2.5 mm and 5.0 mm, the recovery rate of the cross-sectional area of the vent hole did not show a significant difference. Therefore, in the range where the Cavity length is approximately 2.5 mm or more and 5.0 mm or less, the preferable size of the flavor capsule can be appropriately selected. Further, according to the sample (1) to the sample (7), there was no case where the vent hole was crushed and could not be recovered. In addition, such as samples As shown in (1) to (5), even if the lengths of CH length 1 and CH length 2 are different, the recovery rate does not show a significant difference between the annular segments integrally formed by the molding paper. Further, when the same CH diameter and the same Cavity length are long, the total length of the two annular segments (CH length 1 + CH length 2) is longer, and the recovery rate is large. Therefore, even if a filter portion composed of a plurality of segments is used, if the total length of the two annular segments in the axial direction is 15.0 mm or more, a recovery rate of about 0.1 can be expected (for example, refer to the sample of Fig. 7 (4). )). In order to secure the area where the user crushes with the finger or the area where the user smokes, the length of the annular segment (CH length 1 and CH length 2) is preferably 15.0 mm or more in total.

<Composition and Functional Evaluation of Annular Segments>

Next, the results of the sensory evaluation of the samples (1) to (7) after the restoration shown in Fig. 7 were measured. As shown in Fig. 8, the sample used for the functional evaluation includes the filter segment 121 in addition to the segments shown in the samples (1) to (7) of Fig. 7. Further, the length in the axial direction of the filter segment 121 is referred to as a Filter length. The other configuration is the same as the example of Fig. 5.

The plastic dose of the annular portion 1221 of the annular segment 122 and the annular portion 1241 of the annular segment 124 was set to 12%. Further, the specifications of the filter segment, the annular portion 1221 of the annular segment 122, and the annular portion 1241 of the annular segment 124 are both set to 2.8Y35000. Fig. 9 is a table for explaining the constitution of the filter portion used for the functional evaluation. The lot (Lot) 1 to Batch 7 shown in Fig. 9 are set to have a CH length of 5.0 mm to 14.0 mm, a Cavity length of 2.5 mm or 5.0 mm, and a full length of the filter portion. Adjust the filter length to be 30.0mm. CH length 1, Cavity of batch 1 to batch 7 shown in Fig. 9 The length and the CH length 2 correspond to the CH length 1, the Cavity length, and the CH length 2 of the samples (1) to (7) shown in Fig. 7, respectively. Further, 20 μl of an ethanol-solvent L-Menthol solution was added to the annular section 122 and the annular section 124 by means of a syringe. The menthol concentration was 10,000 ppm per cigarette when the amount of tobacco was 650 mg.

The evaluation team was the three reviewers and the evaluation results were the average of the three. The evaluation step is repeated three times at any tempo (1) in the state in which the ring segment is not pressed (ie, the opening state (also referred to as "Open"), and (2) in the ring segment. Attraction under the state (ie, the closed-cell state, also known as "Close"). Then, VAS (Visual Analogue Scale) was used to evaluate the intensity of each fragrance (also referred to as "mint coolness") in a total of 6 times (also referred to as "1st" to "6th"). The VAS has a scale of 0 to 100, using a scale of 100 when the mint sensation is most strongly felt.

The table of Fig. 10 has items of batch 1 to batch 7 in the vertical column, and has 3 times of Open (1st, 3rd, 5th) and 3 times of closing (1nd, 6th) and 2nd in the horizontal column (2nd, Each item such as 4th and 6th), and the difference between the average value at the time of Open and the average value at the time of Close, and the value indicating each evaluation result are displayed. Figure 11 is a line graph showing the results of the evaluation. In each batch, the switching of the flavor intensity was felt at both Open and Close. In addition, Fig. 12 is a graph showing the difference between the average value at the time of Open shown in Fig. 10 and the average value at the close in the bar graph for the different batches. The difference in flavor intensity between Open and Close, a slight difference can be observed between batches, but in any batch, full flavor intensity can be felt. Switching.

<Function of the length of the annular segment, the diameter of the vent, and the amount of fragrance added and the intensity of the flavor>

Next, the functional evaluation of the length of the annular segment, the diameter of the vent hole, and the flavor intensity (also referred to as "mint coolness") in the open state and the closed state when the amount of the flavor added is different will be described.

The annular section of the measurement target is a diameter (also referred to as "CH diameter") of the vent holes of 2.0 mm, 3.2 mm, 5.0 mm, and 6.0 mm. Further, the length in the axial direction of the annular segment (also referred to as "CH length") is 15.0 mm, 20.0 mm, 27.0 mm, and 32.0 mm. In the present functional evaluation, a filter composed of one segment (annular segment) was used. According to the samples (1) to (5) of Fig. 7, it is understood that even if a plurality of segments are used, the total length in the axial direction of the annular segment is increased, and the recovery rate of the cross-sectional area of the vent hole is also increased. In the evaluation, the entire length of the ring segment was set to one segment for evaluation. The specifications of the fiber yarn are set to 5.0Y47000 and the plastic dose is 12%. The fragrance was injected into the concentration of 20 μl of 2 concentrations of L-Menthol by means of a syringe. When the amount of cut tobacco is 650 mg, the amount of each concentration is equivalent to 5,000 ppm/cig. and 10,000 ppm/cig.

The functional evaluation was carried out in the same manner as in Batch 1 to Batch 7 shown in Figure 9. That is, the evaluation team was the three reviewers, and the interactions Open and Close were repeated 6 times (6 times of suction), and the feeling of mint was evaluated by VAS. The evaluation results are the average of 3 digits.

Figures 13 to 16 show that the amount of flavor added is A table of evaluation results of the mint sensation at 5,000 ppm/cig. In each table, there are CH diameters (2.0 mm, 3.2 mm, 5.0 mm, and 6.0 mm) in the vertical column, and 3 times of Open (1st, 3rd, 5th) and 3 times of closure in the horizontal column from 1st to 6th. Each item such as the average value of (2nd, 4th, and 6th), and the difference between the average value at the time of Open and the average value at the time of Close, and the values indicating the respective evaluation results are displayed.

In addition, Fig. 17 is a table showing the difference between the average value of the CH in the vertical column and the average value in the horizontal column and the opening in the CH column.

The difference between the average values of the evaluation results at the time of Open and Close can be said to be a numerical value indicating the difference in the intensity of the fragrance. When the amount of the fragrance added was 5,000 ppm/cig., the switching of the flavor intensity was expressed as a numerical value in any of the CH diameter and the CH length. Further, as shown in Fig. 17, the CH diameter and the CH length do not indicate a large difference in the difference in flavor intensity between Open and Close.

Fig. 18 to Fig. 21 are tables showing the evaluation results of the cooling sensation of the mint when the amount of the fragrance added was 10,000 ppm/cig. In each table, there are CH diameters (2.0 mm, 3.2 mm, 5.0 mm, and 6.0 mm) in the vertical column, and 3 times of Open (1st, 3rd, 5th) and 3 times of closure in the horizontal column from 1st to 6th. Each item such as the average value of (2nd, 4th, and 6th), and the difference between the average value at the time of Open and the average value at the time of Close, and the values indicating the respective evaluation results are displayed.

In addition, the 22nd figure shows the difference between the average value of the CH in the vertical column and the average of the CH in the horizontal column and the average value in the Close. Table.

When the amount of the fragrance added was 10,000 ppm/cig., the switching of the flavor intensity was sufficiently felt in any of the CH diameter and the CH length. Further, as shown in Fig. 22, when the amount of the fragrance added is 10,000 ppm/cig., the same as when the amount of the fragrance added is 5,000 ppm/cig., the CH diameter and the CH length do not indicate the fragrance at the time of Open and Close. There is a big difference in the difference in strength. However, the difference in flavor intensity between Open and Close is greater than 5,000 ppm/cig. in any of the CH and CH lengths. Moreover, the difference in value can be actually felt to the evaluator. Therefore, it is known that the amount added is preferably 10,000 ppm/cig. However, when the amount added exceeds 40,000 ppm/cig., menthol forms crystallized or oozes to the outside of a paper material such as filter paper, and there is a concern of bleeding. Therefore, the amount added is preferably 40,000 ppm/cig. or less.

According to the above experimental results, it is found that the diameter of the vent holes of the first annular segment and the second annular segment is 2.0 mm or more and 6.0 mm or less, and the length of the first annular segment and the second annular segment is longer. When the total length is 15.0 mm or more, the switching of the flavor intensity can be sufficiently felt. In order to form the cigarette 1 to have a normal length, the length of the annular segment in the axial direction is preferably 32.0 mm or less. Further, in order to form the cigarette 1 into a general thickness, the diameter of the vent hole is preferably 6.0 mm or less.

In other words, in the first annular segment and the second annular segment, the cross-sectional area of the vent hole after repeated pressing and liberation of the cross-section of the cross-section for 10 seconds with a force of 60 N is repeated 7 times in the state in which the fragrance is carried. Preferably, it is restored to 0.3 mm ² or more. 0.3 mm ² or more is an approximate value of the sectional area of the vent hole after the weighting of the sample (4) shown in Fig. 7.

Further, for example, menthol can be used as the fragrance. When menthol is used as the fragrance, the amount added is preferably 10,000 ppm/cig. or more and 40,000 ppm/cig. or less.

<Other variants>

In the above embodiment, the tobacco product in which the flavor intensity is switched can be experienced, and the open state and the closed state can be switched by pressing, and can be realized by providing a filter carrying the fragrance. Specifically, it is preferable to have the following annular section, that is, in a state in which the fragrance is carried, the vent hole can be blocked by the pressing of the filter in the radial direction, and has a predetermined restoring force, after the liberation of the pressure 30 At the second time, the sectional area of the vent hole is restored to an annular section of 0.3 mm ² or more. If this condition is satisfied, the switching of the flavor intensity can be sufficiently felt when smoking is normally performed.

The filter portion 12 may not have the filter segment 121. Even without the filter segment 121, the switching of the flavor intensity can be sufficiently felt. However, by setting the filter segment 121, the original filtration (adsorption of tar or nicotine) or the cooling effect of the smoke can be obtained, and the fragrance carried on the annular segment 122 and the annular segment 124 can be inhibited from moving to the tobacco. The tobacco of the rod 11. Further, according to the filter segment 121, intrusion of the shredded tobacco into the filter portion 12 can be suppressed.

Further, a filter portion which can be attached to any of the above-described tobacco products can be provided. Examples of the tobacco product include paper roll tobacco (filter cigarette, filterless cigarette (no filter)), cigar (rolled leaf), cigarette, and the like.

The package filter portion 12, in particular, a paper material such as a formed paper, a raw material paper, a filter paper, etc., which is wrapped in a ring-shaped section and a cavity section, is preferably liquid. It is formed from raw materials that do not penetrate the fragrance. Thus, it is possible to suppress the bleeding of the fragrance to the outer peripheral side of the cross section of the cigarette to form a bleeding. A raw material that does not penetrate the fragrance, for example, may be a raw material having oil repellency or water repellency depending on the nature of the fragrance.

In order to perceive the switching of the flavor intensity, the filter portion 12 having the above configuration can specify a range of a preferred vent recovery rate or the like in detail, or a combination of the wire size, the CH length, and the CH diameter. Further, in order to secure the strength or recovery rate of the filter portion, it is also preferable to select the material or basis weight of the molding paper or the filter paper.

12‧‧‧ Filter section

121‧‧‧Filter section

122‧‧‧ ring segment (1st ring segment)

123‧‧‧Cylinder section

124‧‧‧ ring segment (2nd ring segment)

125‧‧‧Roll paper

126‧‧‧ Spice Capsules

1221, 1241‧‧‧Ring

1222, 1242‧‧ vents

Claims (7)

A filter for a tobacco product comprising a plurality of sections having different internal structures connected in a longitudinal direction of the tobacco product, comprising: a cavity covered with a paper member, and retaining a perfume capsule containing the fragrance therein a hollow spice portion; disposed on the side of the tobacco portion closer to the tobacco portion, and provided with a first annular portion of the vent hole along a substantially center of the transverse section of the filter; and disposed closer to the suction side than the fragrance portion And a second annular section having a vent hole having an inner diameter smaller than a diameter of the fragrance capsule is provided along a substantially center of the cross section of the filter; the first annular section and the second annular section are carried In the state of holding the fragrance, the vent hole can be blocked by the radial pressing of the filter, and has a predetermined restoring force. The filter according to claim 1, wherein the first annular segment and the second annular segment have a cross-sectional area of the vent hole restored to 0.3 mm ² or more 30 seconds after the liberation of the pressing. The filter according to claim 1 or 2, wherein the diameter of the vent hole of the first annular segment and the second annular segment is 2.0 mm or more and 6.0 mm or less, and the first annular segment and the first The length of the filter of the 2 annular segments in the longitudinal direction is 15.0 mm or more and 32.0 mm or less. The filter according to any one of claims 1 to 3, wherein the first annular segment, the second annular segment, and the fragrance segment are coated with a paper member having oil repellency or water repellency. Founder. A filter according to any one of claims 1 to 4, wherein The filter further includes a filter segment that is not provided with the aforementioned vent hole on the side closest to the tobacco. The filter according to any one of claims 1 to 5, wherein the fragrance is menthol, and the menthol is added in an amount of 10,000 ppm/cig. or more and 40,000 ppm/cm or less. A tobacco product comprising: a stem comprising a shredded tobacco, and a filter according to any one of claims 1 to 6.