RU2642398C2 - Cigarette (versions) - Google Patents

Abstract

FIELD: tobacco industry.

SUBSTANCE: this invention provides a cigarette comprising a flavouring capsule contained in the filter and easily destroyed. The cigarette contains a tobacco rod including a tobacco filler and cigarette paper wrapped around the tobacco filler; a filter including a filter rod comprising filtering material, a plurality of filter wrappers wrapped around the filter rod so that they form a plurality of layers, and a capsule disposed in the filter and including a capsule shell in which liquid content is located; and rim paper wrapped around the tobacco rod and filter so that it connects the tobacco rod and filter, each of the filter wrappers has a density of 0.5 to 1.0 g/cm³, and wherein the filter wrappers constituting a plurality of layers have a total thickness in the range of 100 to 250 mcm. The cigarette contains a tobacco rod including a tobacco filler and cigarette paper wrapped around the tobacco filler; a filter including a filter rod comprising filter material, a plurality of sheet-like elements wrapped around the filter rod so that they form a plurality of layers and a capsule disposed in the filter and including a capsule shell in which liquid content is located; and rim paper wrapped around the tobacco rod and filter so that it connects the tobacco rod and filter, each of the sheet-shaped elements has a density of 0.5 to 1.0 g/cm³, and the sheet-like elements constituting the plurality of layers have a total thickness in the range of 100 to 250 mcm, wherein at least one of the sheet-like elements is a filter wrapper and at least one of the sheet-like elements is a polymeric layer.

EFFECT: easy destruction of the fragrance capsule with a slight effort and short travel distance and ensured the distribution of force applied by the fingers over a wide contact surface and, accordingly, the pressure of fingers may decrease.

9 cl, 21 dwg, 2 ex

Description

Technical field

The present invention provides a cigarette comprising a flavor capsule that is contained in a filter and is easily broken.

State of the art

A flavor capsule placed in a cigarette filter is known in the art. The smoker crushes the flavor capsule in such a way that during smoking, inhale the aroma produced by the contents of the capsule or mask the smell of the cigarette butt that remains after smoking the cigarette (see patent documents 1 and 2). The flavor capsule is described in detail, for example, in Patent Document 3.

The flavor capsule is immersed in the filter material that makes up the cigarette filter, or is located in the hollow section, which is located among many filter rods. In any case, the fragrance capsule is located inside the filter, and the smoker squeezes it, squeezing it with your fingers, and between the fingers and the capsule there is a ficella (filter wrapper or outer filter wrapper) and rim paper.

State of the art publications

Patent Publications

Patent Document 1 - Japanese Application (KOKAI) No. 7-250665

Patent Document 2 - PCT Application of Japan No. 2007-520204

Patent Document 3 - PCT Application of Japan No. 2008-546400

SUMMARY OF THE INVENTION

Object of the invention

The present invention provides a cigarette comprising a flavor capsule that is contained in a filter and is easily broken.

Means of solving the problem

According to the present invention, a cigarette includes: a tobacco rod comprising a tobacco filler and cigarette paper wrapped around a tobacco filler; a filter including a filter rod comprising filter material, a plurality of leaf-shaped elements wrapped around the filter rod so that they form a plurality of layers, and a capsule located in the filter and including a capsule shell containing liquid contents; and rim paper wrapped around the tobacco rod and the filter so that it connects the tobacco rod and the filter. Leaf-shaped elements have a density of from 0.5 to 1.0 g / cm ³ and the total thickness of the folded leaf-shaped elements is from 100 to 250 μm.

Advantages of the Invention

An advantage of the cigarette of the invention is that the flavor capsule can be easily broken with little effort and a short travel distance. In addition, the cigarette according to the invention provides the distribution of the force exerted by the fingers over a wide contact surface, and accordingly, the pressure of the fingers can decrease.

Brief Description of the Drawings

Figure 1 is a view in longitudinal section of a cigarette according to a first aspect of a basic embodiment.

FIG. 2 is a longitudinal sectional view of a cigarette according to a second aspect of a basic embodiment.

Figure 3 is a table representing the characteristics of each type of test paper.

4 is a schematic view of a measuring system using a rheometer.

5 is a graph representing the relationship between the distance of movement of the flavor capsule and the load.

6 is a diagram illustrating the behavior of the investigated paper of each type when applying the same load to it.

7 is a graph representing the relationship between paper thickness and force transfer characteristic of a flavor capsule.

8 is a graph representing the distribution of pressure applied to the test paper.

Fig.9 is a diagram illustrating the state of the investigated paper of various types when a uniform load is applied to it.

Figure 10 is a table representing the relationship between the leaf-shaped element (single-layer wrap or two-layer wrap) and roundness.

11 is a side view showing a cigarette according to the first embodiment.

12 is a longitudinal sectional view of a cigarette according to a third aspect of the first embodiment.

13 is a longitudinal sectional view of a cigarette according to a fourth aspect of a first embodiment.

Fig. 14 is a cross-sectional view along F14-F14 of the cigarette of Figs. 12 and 13.

FIG. 15 is a table showing the relationship between a sense of destruction and ratings.

Fig. 16 is a table showing the results of an evaluation of a sense of destruction.

Fig. 17 is a statistical study of the evaluation results shown in Fig. 16.

Fig. 18 is a cross-sectional view of a cigarette filter according to a second embodiment.

Fig. 19 is a cross-sectional view of a cigarette filter according to a third embodiment.

Fig. 20 is a cross-sectional view of a cigarette filter according to a fourth embodiment.

21 is a cross-sectional view of a cigarette filter according to a fifth embodiment.

Description of Embodiments

Basic embodiment

Next, cigarettes according to a basic embodiment will be described. According to a basic embodiment, the flavor capsule may be embedded in the filter material that constitutes the cigarette filter (first aspect), or it may be located in a hollow section among a plurality of filter rods (second aspect).

As shown in FIG. 1, a cigarette 11 according to a first aspect of a basic embodiment comprises: (i) a tobacco rod 14 including tobacco filling 12 (ground tobacco leaves) and cigarette paper 13 wrapped around tobacco filling 12; (ii) a filter 15 adjacent to the tobacco rod 14; and (iii) rim paper 16 wrapped around the tobacco rod 14 and the filter 15 and used to connect the tobacco rod 14 and the filter 15.

The filter 15 comprises a single filter rod 17, a ficella (filter wrap) 21, wrapped around the filter rod 17, and a flavor capsule 23 embedded in the filter 15 (in the filter rod 17) and including a capsule shell 22, which contains a flavoring substance.

According to a first aspect of the basic embodiment, at least one paper of ficella 21 and rim paper 16 has a density of 0.5 to 1.0 g / cm ³ and a thickness of 100 to 250 μm.

As shown in FIG. 2, a cigarette 11 according to a second aspect of the basic embodiment comprises: (i) a tobacco rod 14 including tobacco filling 12 and cigarette paper 13 wrapped around the tobacco filling 12; (ii) a filter 15; and (iii) a rim paper 16 wrapped around the tobacco rod 14 and the filter 15 and used to connect the tobacco rod 14 and the filter 15.

The filter 15 consists of two filter rods 17, separated from each other, and between them is defined a hollow section 24, a ficella 21 wrapped around two filter rods 17 and defining a hollow section 24, and a flavor capsule 23 located inside the hollow section 24 and including a capsule shell 22, which contains a flavoring substance.

According to a second aspect of the basic embodiment, at least one of fitselly paper 21 and tipping paper 16 has a density of from 0.5 to 1.0 g / cm ³ and a thickness of 100 to 250 microns.

The following is a description of the distinguishing features that apply to two aspects of the basic embodiment, unless otherwise specified.

Compared to Fitzella 21 and paper, which is typically used as a rim paper 16, paper having a density of 0.5 to 1.0 g / cm ³ and a thickness of 100 to 250 μm is dense and thick. Due to this density and thickness, the paper provides good capsule breaking characteristics.

The paper density described herein is the value obtained by (i) measuring the surface density and thickness of paper for making cigarettes by methods that define Japanese industry standards JIS P 8124 and JIS P 8118, and (ii) introducing measured values in the following formula:

density (g / cm ³⁾ = above-ground weight (g / m ²⁾ / thickness (mm) × ... 1000 (Formula 2)

In the case where the paper having a density of from 0.5 to 1.0 g / cm ³ and a thickness of 100 to 250 μm is used as the ficella 21, the rim paper 16 may be a paper having a density of from 0.5 to 1 , 0 g / cm ³ and a thickness of from 100 to 250 microns. Alternatively, the wrapping paper 16 may be paper having the same density and thickness as the commonly used wrapping paper 16. Similarly, in the case where the paper having a density of from 0.5 to 1.0 g / cm ³ and a thickness of 100 to 250 μm, is used as the rim paper 16, Fitzella 21 may be a paper having a density of from 0.5 to 1.0 g / cm ³ and a thickness of from 100 to 250 microns. Alternatively, Fitzella 21 may be paper having the same density and thickness as the commonly used Fitzella 21.

According to a basic embodiment, at least one paper of ficella 21 and rim paper 16 has a density of from 0.5 to 1.0 g / cm ³ and a thickness of from 100 to 250 μm, preferably a density of from 0.7 to 1.0 g / cm ³ and a thickness of 180 to 250 microns, and preferably a density of from 0.8 to 1.0 g / cm ³ and a thickness of 240 to 250 microns.

Even if the thickness of the paper is in the range from 100 to 250 μm, the density of the paper should be at least 0.5 g / cm ³ . If the density is less than 0.5 g / cm ³ , the paper is prone to deformation when the flavoring capsule 23 collapses. Moreover, since the pressure exerted by the finger is concentrated at a certain point, the flavoring capsule 23 cannot easily break. If the paper density exceeds 1.0 g / cm ³ , the cost of paper production increases, which is undesirable. To prevent leakage of liquid contents from the capsule, the paper density should preferably be in the range from 0.5 to 1.0 g / cm ³ . Even if the paper density is in the range from 0.5 to 1.0 g / cm ³ , the paper thickness should be at least 100 μm. If the thickness is less than 100 μm, deformation of the paper becomes likely when the flavor capsule 23 breaks. In addition, since the pressure exerted by the finger is concentrated at a certain point, the flavor capsule 23 cannot be easily destroyed. If the paper thickness exceeds 250 μm, it becomes difficult to carry out the wrapping step during the cigarette production process, and the destruction of the flavor capsule 23 may be imperceptible.

Fitzella 21 according to the first aspect is also referred to as a filter wrapper. Similarly, in the case where paper having a density of 0.5 to 1.0 g / cm ³ and a thickness of 100 to 250 μm is used as a ficella, its surface density can be adjusted within the range of 50 to 250 g / m ² and its air permeability can be adjusted within the range of 0 to 30,000 CU (units of the Center for Cooperation on Tobacco Related Research (CORESTA)). In order to prevent the liquid contents of the flavor capsule 23 from leaking out of the cigarette 11, the breathability of the ficella 21 according to the first aspect can be set to level 0.

Fitzella 21 according to the second aspect is also referred to as an outer filter wrap. In the case where paper having a density of from 0.5 to 1.0 g / cm ³ and a thickness of from 100 to 250 μm is used as the ficella 21, its surface density can be adjusted within the range of from 50 to 250 g / m ² , and its breathability can be adjusted within the range of 0 to 30,000 CU. According to a second aspect, the flavor capsule 23 is located in the hollow section 24 of the filter 15. In order to prevent the liquid contents of the flavor capsule 23 from leaking out of the cigarette 11, the breathability of the ficella 21 according to the second aspect can preferably be set to 0. In the case where the paper has a density of 0 , 5 to 1.0 g / cm ³ and a thickness of 100 to 250 μm, is used as a ficella 21, the rim paper 16 may be paper having the same density and thickness as the commonly used rim paper 16. In this case, the surface density of the rim paper 16 can be adjusted within the range of 20 to 60 g / m ² , and its thickness can be adjusted within the range of 20 to 60 μm.

According to a first aspect of the basic embodiment, the flavor capsule 23 is embedded in the filter rod 17, and according to a second aspect of the basic embodiment, the flavor capsule 23 is located in the hollow section 24 between the filter rods 17. A single flavor capsule 23 may be present in the filter 15; alternatively, a plurality of flavor capsules 23 may be present (e.g., two to ten capsules). In the case where the flavor capsule 23 is located in the hollow section 24, a single flavor capsule 23 may be present in one hollow section 24; alternatively, a plurality of flavor capsules 23 may be present (e.g., two to ten flavor capsules).

The flavor capsule 23 includes a capsule shell 22 and a liquid content 25 containing a flavoring substance. The materials of the capsule shell 22 may be starch, dextrin, polysaccharide, agar-agar, gellan gum, gelatin, various types of natural gelling agents, glycerin, sorbitol, calcium chloride or the like. The capsule shell 22 may contain a flavoring or coloring matter. So that the smoker can find the flavoring capsule 23 even in the case where it is surrounded by an opaque ficella 21 or rim paper 16, the flavoring capsule 23 is preferably colored. More specifically, the capsule shell 22 should preferably contain a dye blue 1 (brilliant blue FCF) or a similar dye.

The flavoring agent that is included in the liquid contents 25 is, for example, menthol or a flavoring agent of any type that is used for smoking articles, such as essential oil. Typical examples of flavoring agents are menthol, tobacco extract, a natural plant flavoring agent (e.g., cinnamon, sage, spicy herb, chamomile, kudzu herb (pueraria hairy), tea hydrangea, cloves, lavender, cardamom, nutmeg, bergamot, geranium, honey extract, rose oil, lemon, orange, Chinese cinnamon, cumin, jasmine, ginger, coriander, vanilla extract, crispy mint, peppermint, cassia, coffee, celery, cascarilla (croton tree), sandalwood, cocoa, ylang-ylang (aromatic cananga), fennel, anise, licorice, carob, plum extract, peach extract or similar), saccharides (e.g. glucose, fructose, isomerized syrup, caramel or similar), cocoa (powder, extract or other form) esters (e.g., isoamyl acetate, linalyl acetate, isoamyl propionate, linalyl butyrate or the like), ketones (e.g., menton, ionon, damaskenone, ethyl maltol or the like), alcohols (e.g. geraniol, linalool, anethole, eugenol or the like)ice hydehydes (e.g. vanillin, benzaldehyde, anisic aldehyde or the like), lactones (e.g. γ-undecalactone, γ-nonalactone or similar), flavoring agents of animal origin (e.g. musk, ambergris, civet musk, beaver stream or similar ) hydrocarbons (e.g. limonene, pinene or similar). These flavoring agents can be used individually or in a mixed state.

As a solvent for the liquid contents 25, a solvent suitable for the flavoring agent may be used. For example, a medium chain fatty acid triglyceride (MCT) (in particular caprylic / capric acid glyceride), propylene glycol, water or ethanol may be used. Other solvents may be present in the liquid content 25, as well as other additives such as a pigment, emulsifier and thickener.

Although the method for manufacturing the flavor capsule 23 is not limited to any particular embodiment, the dripping method is mainly used for the manufacture of flavor capsules 23 having seamless capsule shells 22. A double nozzle is used in this method. The liquid contents 25 are discharged from the inside of the nozzle, and at the same time, the capsule shell material converted to liquid is discharged from the outside of the nozzle. As a result of this, the capsule shell may contain and retain liquid contents without forming any seam.

The flavor capsule 23 may be in the form of a sphere or cylinder. The sphere may be a circular object having an almost circular cross section or an ellipsoidal object having an ellipsoidal cross section. Preferably, the flavor capsule 23 is an article having a substantially circular cross section. When the flavor capsule 23 is a sphere having a substantially circular cross section, it may have a diameter in the range of 1.0 to 8.0 mm. When the capsule is an ellipsoidal sphere, it may have a maximum diameter in the range of 1.0 to 7.0 mm and a minimum diameter in the range of 1.0 to 7.0 mm. When the capsule is a cylinder, it may have a circular diameter in the range of 1.0 to 7.0 mm and a height in the range of 1.0 to 7.00 mm. As should be understood from Example 3, mentioned below, if the flavor capsule 23 is excessively small, the travel distance during the destruction of the flavor capsule 23 is inevitably large. Thus, in the case where the flavor capsule 23 is a sphere, its diameter should preferably be 3.0 mm or more. Similarly, in the case where the flavor capsule 23 is an ellipsoidal object, the smallest diameter of this ellipsoidal object should preferably be 3.0 mm or more. In addition, where the flavor capsule is a cylinder, the diameter of its circular cross section should preferably be 3.0 mm or more. It turns out that the flavor capsule 23 is capable of breaking when a force of about 10 to 35 N is applied to it. In the case where paper having a density of from 0.5 to 1.0 g / cm ³ and a thickness of 100 to 250 μm, even a relatively hard capsule, such as a capsule that can break when a force of about 25 N to 30 N is applied to it, can break with a small force and a short travel distance. The advantage of a hard capsule is that it does not break easily when the cigarette 11 containing the capsule is exposed to high temperature or transported.

As should be apparent from the basic embodiment, which is mentioned later, when a capsule that is capable of breaking with a force of approximately 30 N is destroyed directly with a finger, or when an outer filter wrapper (50NFB) is inserted, local finger pressure is felt. However, when using paper having a density of from 0.5 to 1.0 g / cm ³ and a thickness of 100 to 250 μm, the capsule can be easily broken without a sensation of local finger pressure.

According to the first and second aspects of the basic embodiment, the filter rod 17 is made of filter material, such as cellulose acetate tow, as in a conventional filter cigarette. The filter rod 17 may be made exclusively of filter material; alternatively, it may be made of filter material and ficella wrapped around the filter material. In the case where the filter 15 includes a plurality of filter rods 17, the filter rod 17 on the side of the crushed tobacco and the filter rod 17 on the side of the smoker's mouth can be made of the same material and have the same structure; alternatively, they can be made from various materials and have different structures.

A cellulose acetate tow may have a linear density of a single fiber of 1.9 to 12.0 denier (g / 9000 m), a total linear density of 10,000 to 44,000 (g / 9000 m), the number of fibers from 830 to 23500 (fibers) and a pressure drop from 100 to 600 (mm of water. Art. / 120 mm). A plasticizer, such as triacetin, may be added to the cellulose acetate tow. The plasticizer can be added in such an amount that it can be from 6 to 10 wt.% In relation to the weight of cellulose acetate tow. In the case where the activated carbon granules are dispersed in a cellulose acetate tow, the plasticizer can be added in such an amount that it can comprise from 2 to 20% by weight with respect to the weight of the cellulose acetate tow.

If the filter material is excessively hard, the repulsive force that the filter rod 17 exerts when the filter containing the flavor capsule is moved increases. For this reason, the linear density of a single fiber should be 3.0 (g / 9000 m) or more, and the total linear density should be 35000 (g / 9000 m) or less.

The filter 15 has a circumference of approximately 14 to 26 mm. Like a conventional type filter, filter 15 has a length of, for example, 17 to 31 mm. In the filter 15 according to the first aspect, the hollow section 24 has a length that is more than the size of the flavor capsule 23. For example, the length of the hollow section is from 3 to 7 mm, and the length of each filter rod 17 may be from 5 to 20 mm.

In a cigarette according to the second aspect, which is shown in FIG. 2, there are two filter rods 17 between which there is one hollow section 24. However, there may be n filter rods 17 (where n is an integer of 2 or more) between which there are (n-1) hollow sections 24. The number n is from 2 to 4, preferably 2 or 3, and more preferably 2. According to aspects of the basic embodiment, the tobacco rod 14 is the same as in a conventional cigarette and includes tobacco filler material 12 and cigarette paper 13, which is wrapped around tobacco filler material. The tobacco rod 14 has, for example, a circumference of approximately 14 to 26 mm and a length of 53 to 67 mm.

Basic embodiment

Example 1: the effects that the thickness and density of the paper produce on the travel distance when the flavor capsule breaks are studied for the following six types of test paper used in Example 1 (the companies that sell the test paper for sale are shown in brackets). The characteristics of the test paper of each type are shown in Fig.3. A square measuring 2 cm × 2 cm, which was used in the experiment, was cut from the test paper of each type.

(1) 50NFB (NIPPON PAPER PAPYLIA Co., Ltd.)

(2) HS (SHIN-TOMOEGAWA Co., Ltd.)

(3) AT (SHIN-TOMOEGAWA Co., Ltd.)

(4) HS120 (SHIN-TOMOEGAWA Co., Ltd.)

(5) S80 (NIPPON PAPER PAPYLIA Co., Ltd.)

(6) Resistant paper (NIPPON PAPER PAPYLIA Co., Ltd.)

3, the breaking force is the load (H) that is applied to the flavor capsule when the flavor capsule breaks, and the travel distance is the distance (mm) that the finger moves when the flavor capsule breaks. The surface density of 50NFB paper is 50.0 g / m ² . Flavoring capsule 23 includes the substance of the capsule shell (15 wt.%) And the liquid content of 25 (85 wt.%), And it is made using the drip method. The main components of the capsule shell material and the liquid contents that make up the flavor capsule 23 are as follows:

(i) Substance of capsule shell:

gelatin, gellan gum, starch, glycerin and sorbitol.

(ii) Liquid content:

a fatty acid triglyceride having a medium chain length (caprylic / capric glyceride) (83 wt.%).

The manufactured flavor capsule 23 was a sphere in which the diameter was approximately 4.5 mm. The flavor capsule 23 had a breaking force of approximately 30 N. According to the present embodiment, only the solvent is present in the liquid contents 25 of the flavor capsule 23 and no flavoring substance is present. It has been shown that the presence / absence of a flavoring substance has no effect on the ability of a capsule to break.

The relationships between the travel distance and the load required to break the flavor capsule 23 were investigated using the measuring system 26 shown in FIG. 4. More specifically, the flavor capsule was placed on test paper on elastic rubber and crushed by applying pressure from above using a pressure sensitive rheometer rod. Measured travel distance (mm) (also referred to as travel distance) and load (N). The measurement was performed using a Sun RHEO METER CR3 000EX instrument sold by K. K. Sun Kagaku.

The measurement results are shown in FIG. In FIG. 5, (1) is 50NFB, (2) is HS, (3) is AT, (4) is HS120, (5) is S80, and (6) is paper resistant.

As can be seen from the results in FIG. 5, the travel distances (travel distances) required to achieve the same load are shorter for HS, AT, HS120 and S80 than for 50NFB. On the other hand, the travel distance (travel distance), which is required to achieve the same load, is longer in the case of resistant paper than in the case of 50NFB paper. 6 schematically illustrates the state of the 50NFB, the resistant paper, and S80 when the same load is applied to them. 6 shows that using paper (e.g., S80) having a predetermined density and thickness allows a load to be applied to the flavor capsule for a short travel distance. In addition, since the paper is difficult to fold when a load is applied to it, the pressure to break the flavor capsule 23 can be distributed over a wider contact surface area. 6 also shows that low-density paper (e.g., resistant paper) and thin paper (e.g., 50NFB) require long distance travel to apply a given load, and that the pressure to break the flavor capsule 23 tends to concentrate at one point, because the paper bends easily when a load is applied to it.

7, based on these results, illustrates paper thickness characteristics and force transfer characteristics with respect to the force transmitted to the flavoring capsule 23. FIG. 7 shows paper thickness (μm) on the abscissa axis, while on the ordinate axis the ratio (destructive force (N)) / (distance of movement (mm)) is presented. The breaking force is the load (H) that is applied to the flavor capsule 23 when this flavor capsule 23 breaks, and the distance of movement is the travel distance (mm) that is required to break the flavor capsule 23. In the case where the ratio is large (breaking force (N)) / (distance of movement (mm)), a high load can be applied to the flavor capsule 23 at a short distance of movement. In other words, the force can be transmitted to the flavor capsule 23 at a short travel distance. In FIG. 7, (1) is 50NFB, (2) is HS, (3) is AT, (4) is HS120, (5) is S80, and (6) is paper resistant. Twenty samples were made for each type of test paper, and the travel distances (mm) and load (N) were measured using these samples. The average values of the resulting data are plotted on the graph shown in Fig.7. Of the data obtained using twenty samples, typical data were selected, and these selected typical data are plotted on the graph shown in FIG. 5.

Based on Fig. 7, it becomes clear that in the case of paper having a density of from 0.5 to 1.0 g / cm ³ (namely, in the case of 50NFB, HS, AT, HS120 and S80), the ratio (breaking force (N )) / (travel distance (mm)) increases in accordance with the increase in paper thickness so that the force can be easily transmitted to the flavor capsule for a short travel distance. It should be noted that when the paper thickness is approximately 250 μm, the ratio (breaking force (N)) / (distance of movement (mm)) no longer increases. In the case of resistant paper having a thickness of 430 μm and a density of 0.27 g / cm ³ , the ratio (breaking strength (N)) / (distance of movement (mm)) is small and the force cannot be easily transmitted to the flavor capsule.

As can be seen from the above results, the use of paper having a density of from 0.5 to 1.0 g / cm ³ and a thickness of 100 μm or more, allows you to apply the load required to break the flavor capsule, with a short distance of movement. In practice, paper was used having a density of from 0.5 to 1.0 g / cm ³ and a thickness of 100 μm or more. It was assumed that the pressure exerted by the finger was low, and the flavor capsule 23 could easily break with little effort. On the other hand, it can be seen that in the case of paper in which the density is less than 0.5 g / cm ³ and paper in which the thickness is less than 100 μm, a longer travel distance is required in order to apply a load to break the flavor capsule 23. In practice, paper was used in which the density was less than 0.5 g / cm ³ and paper in which the thickness was less than 100 μm. It was assumed that the pressure exerted by the finger was high, that the paper was easily bent or deformed, and that the flavor capsule 23 could not easily break. The various load peaks that are observed in FIG. 5 are due to the variability of the breaking force of the flavor capsules 23.

Example 2: effects that paper thickness produces on pressure distribution when a flavor capsule breaks

As in example 1, the flavor capsule 23 was placed on the test paper on elastic rubber and was destroyed by applying pressure from above using a pressure-sensitive rod of the rheometer. When the capsule collapsed, the pressure distribution for the test paper was measured. The pressure distribution was measured using the measuring system shown in FIG. 4 and the Inastomer elastic rubber sold by INABA RUBBER Co., Ltd. As the test paper was present paper types 50NFB and S80 used in example 1.

The measurement results are shown in Fig. 8.

Fig. 8 represents that the pressure is highest in the center of the pressure distribution and gradually decreases in a concentric manner in accordance with an increase in the distance from the center. In Fig. 8, the pressure is highest in the central part (black part in Fig. 8) of the 50NFB test paper, very high in the part indicated by large shading, and high in the part indicated by thin shading.

The results shown in Fig. 8 show that the area to which the pressure is applied is wider in the case of S80 than in the case of 50NFB, and that the pressure applied in the central part is lower in the case of S80 than in the case of 50NFB. This means that using S80 (namely, test paper having a predetermined density and thickness) reduces the load exerted on the finger. That is, the pressure produced by the finger is not concentrated in the local part, but is distributed over a wide area of the contact surface when the flavor capsule is destroyed. Figure 9 schematically illustrates this state, i.e., the state in which the test paper is present when the same load is applied to it. As can be seen in FIG. 9, in the case of 50NFB (i.e., the test paper that does not have a predetermined thickness), the pressure exerted by the finger is probably concentrated in the local part and becomes the highest in the central part. In the case of S80, the pressure exerted by the finger can be distributed over a wide area of the contact surface and is not high in the central part.

First embodiment

The authors of the present invention believe that the roundness of the filter 15 varies depending on the thickness of the paper when various types of paper having different thicknesses are wrapped around the filter rods 17, as in the basic embodiment. The inventors of the present invention examined the roundness values of cigarettes 11.

Figure 10 illustrates the roundness values of cigarettes 11 in the case where 50NFB is used, and in the case where S2000 is used. Roundness (mm) is calculated by measuring the large diameter and small diameter of the cigarette 11 near the filter 15 and subtracting the small diameter from the large diameter, that is, roundness = large diameter - small diameter ... (formula 1). When a cigarette is completely round, this diameter difference is absent, and the roundness value is zero. When a cigarette is ellipsoidal in shape, there is a large difference between the large diameter and the small diameter, which represents the roundness value. Large and small diameters were measured using a QTM measuring device, which is sold by Cerulean (United Kingdom).

10, the number N means the number of samples (the number of cigarettes tested as samples), and Ave means the average roundness. SD stands for standard deviation, Min stands for minimum value (mm), and Max stands for maximum value (mm). A single-layer wrapper means a cigarette 11 in which one layer of 50NFB or S2000 paper is wrapped around the filter rod 17. A two-layer wrapper means a cigarette 11 in which two layers of 50NFB paper are wrapped around the filter rod 17.

For a single-layer wrapper 50NFB, a two-layer wrapper 50NFB and a single-layer wrapper S2000, which are shown in FIG. 10, the average value of the difference in roundness (the difference between the average values of the two studied groups) was investigated. This study showed that there was no significant difference between the average roundness values of a single-layer 50NFB wrapper and the average roundness values of a 50NFB double-layer wrapper. The study also showed that there was no significant difference (significance level: 1%) between the average roundness values of a single-layer wrapper 50NFB and the double-layer wrapper 50NFB and the average roundness values of a single-layer wrapper S2000. As can be seen from these results, the 50NFB single-layer wrapper and the 50NFB double-layer wrapper are superior to the S2000 single-layer wrapper in terms of roundness characteristics.

A cigarette 11 according to a first embodiment will be described in detail with reference to FIGS. 11-17. According to the first embodiment, the leaf-shaped element (Ficella 21) around the filter rod 17 has a two-layer wrapper structure (two-layer structure), and as a result, the roundness of the cigarette 11 is improved compared to a cigarette according to the basic embodiment. The description will relate mainly to how the first embodiment differs from the basic embodiment. As for the general distinguishing features of the first embodiment and the basic embodiment, corresponding descriptions and illustrations will not be provided.

In the cigarette 11 according to the first embodiment, the flavor capsule 23 can be incorporated into the filter material, which constitutes the filter 15 (third aspect), as shown in FIG. Alternatively, the flavor capsule 23 may be located in the hollow section 24, which is located among a plurality of filter rods 17 (fourth aspect), as shown in FIG. 13.

As shown in FIG. 12, a cigarette 11 according to a third aspect comprises: (i) a tobacco rod 14 including tobacco filling 12 (ground tobacco leaves) and cigarette paper 13 wrapped around tobacco filling 12; (ii) a filter adjacent to the tobacco rod 14; and (iii) rim paper wrapped around the tobacco rod 14 and the filter 15 and used to connect the tobacco rod 14 and the filter 15.

The filter 15 consists of two filter rods 17, two first ficella 21A wrapped around the respective filter rods 17, a single second ficella 21B wrapped around the first ficella 21A so that it covers the two filter rods 17, and a flavor capsule 23 embedded in the filter 15 and including a capsule shell 22, in which there is a liquid content 25, including a flavoring substance.

According to a third aspect, the first Ficella 21A has a density of 0.5 to 1.0 g / cm ³ and a thickness of 50 to 125 μm. The first ficella 21A is made, for example, from the aforementioned paper 50NFB. The second 21BA ficella has a density of 0.5 to 1.0 g / cm ³ and a thickness of 50 to 125 microns. The first ficella 21A and the second ficella 21B are examples of leaf-shaped elements.

As shown in FIG. 13, a cigarette 11 according to a fourth aspect is constituted by: (i) a tobacco rod 14 including tobacco filling 12 and cigarette paper 13 wrapped around tobacco filling 12; (ii) a filter 15; and (iii) a rim paper 16 wrapped around the tobacco rod 14 and the filter 15 and used to connect the tobacco rod 14 and the filter 15.

The filter 15 consists of two filter rods 17, which are separated from each other, and between which there is a hollow section 24, Fitzella 21A wrapped around two filter rods 17 and defining a hollow section 24 between the filter rods 17, the second Fitzella 21B wrapped around the first fitzella 21A and a flavoring capsule 23 located inside the hollow section 24 and including a capsule shell 22, in which there is a liquid content 25, including a flavoring substance.

According to a fourth aspect, the first Ficella 21A has a density of 0.5 to 1.0 g / cm ³ and a thickness of 50 to 125 μm. The first ficella 21A is made, for example, from the aforementioned paper 50NFB. The second ficella 21B has a density of 0.5 to 1.0 g / cm ³ and a thickness of 50 to 125 μm. The second ficella 21B is made, for example, from the aforementioned paper 50NFB. The first ficella 21A and the second ficella 21B are examples of leaf-shaped elements.

The cigarette according to the third aspect and the cigarette according to the fourth aspect have almost the same cross-sectional shape. Fig. 14 is a cross-sectional view taken along line F14-F14 of the cigarette shown in Figs. 12 and 13. The following is a description that applies to both of these aspects unless otherwise specified.

The filter rods 17 are filter elements consisting of a cellulose acetate tow. They may have the same characteristics; alternatively, they may have different characteristics. In the case where the two filter rods 17 have different characteristics, one of them can be made of a conventional filter material, which is a cellulose acetate tow, and the other can be made of a filter material, which is a cellulose acetate tow, including activated carbon granules.

As shown in FIG. 14, the first ficella 21A and the second ficella 21B, which comprise a plurality of layers (two layers), have a total thickness A in the range of 100 to 250 μm.

As shown in FIG. 14, the filter rod 17 and the first ficella 21A are attached to each other at a point in the circumferential direction of the filter rod 17 by means of an adhesive (first adhesive 31). Similarly, the ficella 21A and the second ficella 21B are attached to each other at a point in the circumferential direction of the filter rod 17 by means of an adhesive (second adhesive 32). The second ficella 2IB and the rim paper 16 are attached to each other at a point in the circumferential direction of the filter rod 17 by means of an adhesive (third adhesive 33). The first adhesive 31, the second adhesive 32, and the third adhesive 33 are applied so that they extend linearly along the length of the filter 15 in the longitudinal direction of the cigarette 11.

The feeling of destruction of the flavor capsule was evaluated in relation to the cigarette 11 according to the first embodiment (third aspect). Six men and six women actually crushed flavor capsules 23 of cigarettes 11 and scored how easily (hardly) fragrance capsules 23 break down. For this assessment, flavor capsules 23 were crushed using samples according to the third aspect of the first embodiment and samples of comparative examples, and scores were determined for the corresponding crushing operations. As shown in FIG. 15, a seven-point rating scale from “very difficult” to “very easy.” Was used to determine the corresponding sensations of destruction. In the cigarettes of the comparative examples, the second ficella 21B was made, for example, from 50NFB, and the first ficella 21A was made, for example, from LPWSOLL. LPWSOLL is a conventional type ficella and is thinner than 50NFB.

The evaluation results (answers to questions) are shown in Fig.16. In the case of cigarettes of comparative examples, the average value of the feeling of destruction was 3.08, and the standard deviation was 1.83. In the case of cigarettes according to a variant implementation, the average value of the feeling of destruction was 4.25, and the standard deviation was 1.42. For average values, according to the comparative example and the embodiment, the difference between the average values for the two groups by the Student method was investigated. Since the same people rated cigarettes according to the comparative example and the embodiment, the estimates in the comparative example and the evaluation for the embodiment showed a mutual correlation. In this case, the null hypothesis was that there is no difference between the sense of destruction in the comparative example and the sense of destruction in the embodiment. An alternative hypothesis was that in the case where (the average value of m1 in the comparative example) <(the average value of m2 in the embodiment), the embodiment surpasses the comparative example in terms of the perception of breaking of the flavor capsules. The value of P represents the probability of the statistical value of t in the base normal distribution. Since an alternative hypothesis is that "m1 <m2", the Student method in this case is a one-way study.

According to the results of the study by Student's method, the one-sided value of P was 0.04184, that is, less than the statistical significance level of 5%. Since the sense of destruction according to the embodiment and the feeling of destruction in the comparative example showed a significant difference, the alternative hypothesis that "the embodiment is superior to the comparative example in relation to the feeling of destruction of flavor capsules" cannot be accepted. In the cigarette 11 according to the fourth aspect of the first embodiment, the flavor capsule 23 is located inside the hollow section 24. According to the fourth aspect, thus, no repulsive force of the filter rod 17 affects the arm when the load is applied to the flavor capsule 23. Thus, it cannot be considered that the cigarette according to the fourth aspect is worse than the cigarette according to the third aspect (in which the flavor capsule 23 is inserted into the filter rod 17) in relation to the feeling of destruction I flavor capsule 23. Thus, it is believed that the cigarette 11 according to the fourth aspect provides an improved sense of collapse of the flavor capsule 23 than the cigarette according to the comparative example.

According to a first embodiment, the cigarette 11 comprises: a tobacco rod 14 comprising tobacco filler 12 and cigarette paper 13 wrapped around the tobacco filler 12; a filter 15 including a filter rod 17 containing filter material, a plurality of leaf-shaped elements wrapped around the filter rod 17 so that they form a plurality of layers, and a capsule located in the filter 15 and including a capsule shell 22 in which the liquid contents 25 are located; and rim paper 16 wrapped around the tobacco rod 14 and the filter 15 so that it connects the tobacco rod 14 and the filter 15. The leaf-shaped element has a density of 0.5 to 1.0 g / cm ³ and the total thickness A of the leaf-shaped elements is in the range from 100 to 250 microns.

Typically, the paper used in the basic aspects (basic embodiment) has high rigidity (low flexibility) and, thus, is easily folded. Such paper is not suitable for the manufacture of a completely round filter 15 (cigarettes 11). Due to the features mentioned above, the cigarette 11 according to the first embodiment is completely round and at the same time provides an improved sensation when the smoker crushes the capsule. In addition, each of the leaf-shaped elements has a smaller thickness. Unlike the basic embodiment, in which one thick ficella 21 is used, the first embodiment provides cigarettes for which existing tobacco making machines and filter making machines can be suitably used. Therefore, the cost of producing cigarettes according to the first embodiment is not very high compared to the cost of producing traditional cigarettes.

Second embodiment

Cigarettes 11 according to a second embodiment will be described with reference to FIG. The second embodiment is similar to the first embodiment in that a double (two-layer) sheet-like element is wrapped around the filter rod 17, but differs from the first embodiment in terms of the structure of the sheet-like element. The description will mainly be devoted to how the second embodiment differs from the first embodiment. As regards the general features with the first embodiment, corresponding descriptions and illustrations will not be provided.

In the longitudinal direction, the cigarette 11 according to the second embodiment has a structure similar to that of the cigarettes according to the third aspect (FIG. 12) and the fourth aspect (FIG. 13) of the first embodiment.

Fig. 18 is a cross-sectional view of a cigarette 11 according to a second embodiment, wherein this cross-section is drawn along a line corresponding to the line F14-F14 in Figs. 12 and 13. As shown in Figs. 12, 13 and 18, the cigarette 11 is: (i a) tobacco rod 14 including tobacco filler 12 (ground tobacco leaves) and cigarette paper 13 wrapped around tobacco filler 12; (ii) a filter 15 adjacent to the tobacco rod 14; and (iii) rim paper 16 wrapped around the tobacco rod 14 and the filter 15 and used to connect the tobacco rod 14 and the filter 15.

The filter 15 consists of a single filter rod 17, a Fitzella 21 wrapped around the filter rod 17, a polymer layer 35 between the Fitzella 21 and the filter rod 17 and a flavor capsule 23 located similarly to the capsule according to the third aspect (FIG. 12) or fourth aspect (FIG. 13 )

Fitzella 21 has a density of 0.5 to 1.0 g / cm ³ and a thickness of 50 to 125 microns. Fitzella 21A is an example of a sheet-like element and is made, for example, from the above-mentioned 50NFB paper.

The polymer layer 35 is a cylindrical element covering the circumference of the filter rod 17 and extending along the entire length of the filter rod 17. The polymer layer 35 has a density of 0.5 to 1.0 g / cm ³ and a thickness of 50 to 125 μm. The polymer layer 35 is an example of a sheet-like element and is made, for example, of a hot-melt adhesive. The polymer layer 35 is not limited to a hot-melt adhesive, but may be a different type of material, such as starch, polyvinyl alcohol, a material based on carboxymethyl cellulose. Fitzella 21 and the polymer layer 35, which comprise a plurality of layers (two layers), have a total thickness A ranging from 100 to 250 μm.

The second ficella 21A and the rim paper 16 are attached to each other at a point in the circumferential direction of the filter rod 17 by means of an adhesive (first adhesive 31). The first adhesive 31 is applied so that it extends linearly along the entire length of the filter 15 in the longitudinal direction of the cigarette 11.

According to a second embodiment, at least one of the two sheet-like elements is a ficella 21 and at least one of the sheet-like elements is a polymer layer 35. The polymer layer 35 is formed from an adhesive. Even though one of the leaf-shaped elements is a polymer layer 35 (adhesive), of the second embodiment, the cigarette 11 can be completely round and provide an improved sensation when the smoker crushes the capsule. Since the polymer layer 35 is used as the sheet-like element, the liquid contents of the capsule 25 are prevented from penetrating into and leaving the sheet-like element.

Third Embodiment

Cigarettes 11 according to a third embodiment will be described with reference to FIG. 19. The third embodiment differs from the first embodiment in that a triple sheet-like element (having three layers) is wrapped around the filter rod 17. The description will mainly be devoted to how the third embodiment differs from the first embodiment. As regards the general features with the first embodiment, corresponding descriptions and illustrations will not be provided. In the longitudinal direction, the cigarette 11 according to the third embodiment has a structure similar to that of the cigarettes according to the third aspect (FIG. 12) and the fourth aspect (FIG. 13) of the first embodiment, although the leaf-shaped elements (ficelles) differ in number.

Fig. 19 is a cross-sectional view of a cigarette 11 according to a third embodiment, wherein this cross-section is drawn along a line corresponding to line F14-F14 in Figs. 12 and 13.

As shown in FIGS. 12, 13 and 19, the cigarette 11 is constituted by: (i) a tobacco rod 14 including tobacco filling 12 (ground tobacco leaves) and cigarette paper 13 wrapped around the tobacco filling 12; (ii) a filter 15 adjacent to the tobacco rod 14; and (iii) rim paper 16 wrapped around the tobacco rod 14 and the filter 15 and used to connect the tobacco rod 14 and the filter 15.

The filter 15 is constituted by a filter rod 17, a first Fitzella 21A wrapped around the filter rod 17, a second Fitzella 21B wrapped around the first Fitzella 21A, a third Fitzella 21C wrapped around the second Fitzella 21B, and a flavor capsule 23, similar to the capsule according to the third aspect (FIG. .12) or the fourth aspect (FIG. 13).

Each of the first Ficella 21A, the second Ficella 21B and the third Ficella 21C has a density of 0.5 to 1.0 g / cm ³ and a thickness of 50 to 125 μm. The first ficella 21A, the second ficella 21B and the third ficella 21C are examples of leaf-shaped elements. The first ficella 21A, the second ficella 21B and the third ficella 21C are made, for example, from the above-mentioned 50NFB paper. Ficelles 21A, 21B and 21C, which make up a plurality of layers (three layers), have a total thickness A in the range of 100 to 250 μm.

As shown in FIG. 19, the filter rod 17 and the first ficella 21A are attached to each other at a point in the circumferential direction of the filter rod 17 by an adhesive (first adhesive 31). Similarly, the ficella 21A and the second ficella 21B are attached to each other at a point in the circumferential direction of the filter rod 17 by means of an adhesive (second adhesive 32). The second ficella 21B and the third ficella 21C are attached to each other at a point in the circumferential direction of the filter rod 17 by means of an adhesive (third adhesive 33). The third ficella 21C and the rim paper 16 are attached to each other at a point in the direction of the circumference of the filter rod 17 by means of an adhesive (fourth adhesive 34). The first adhesive 31, the second adhesive 32, the third adhesive 33 and the fourth adhesive 34 are applied so that they extend linearly along the length of the filter 15 in the longitudinal direction of the cigarette 11. Even though the sheet-like elements form three layers, according to the third embodiment the cigarette 11 can be completely round and at the same time provide an improved sensation when the smoker crushes the capsule.

Fourth Embodiment

Cigarettes 11 according to a fourth embodiment will be described with reference to FIG. The fourth embodiment differs from the third embodiment with respect to the structure of the sheet-like elements (ficella and polymer layer) that are wrapped around the filter rod 17. The description will mainly be devoted to how the fourth embodiment differs from the third embodiment. As for the common features with the third embodiment, corresponding descriptions and illustrations will not be presented.

In the longitudinal direction, the cigarette 11 according to the fourth embodiment has a structure similar to that of the cigarettes according to the third aspect (Fig. 12) and the fourth aspect (Fig. 13) of the first embodiment, although the leaf-shaped elements (ficella and polymer layer) differ in number.

FIG. 20 is a cross-sectional view of a cigarette 11 according to a fourth embodiment, wherein this cross-section is drawn along a line corresponding to line F14-F14 in FIGS. 12 and 13.

As shown in FIG. 20, a cigarette 11 is constituted by: (i) a tobacco rod 14 including tobacco filling 12 (ground tobacco leaves) and cigarette paper wrapped around the tobacco filling 12; (ii) a filter 15 adjacent to the tobacco rod 14; and (iii) rim paper 16 wrapped around the tobacco rod 14 and the filter 15 and used to connect the tobacco rod 14 and the filter 15.

The filter 15 comprises a filter rod 17, a first Fitzella 21A wrapped around the filter rod 17, a second Fitzella 21B wrapped around the first Fitzella 21A, a polymer layer 35 located between the filter rod 17 and the first Fitzella 21A, and a flavor capsule 23, similar to the capsule according to the third aspect (FIG. 12) or the fourth aspect (FIG. 13).

Each of the first ficella 21A and the second ficella 21B has a density of 0.5 to 1.0 g / cm ³ and a thickness of 50 to 125 μm. The first ficella 21A and the second ficella 21B are examples of leaf-shaped elements. The first ficella 21A and the second ficella 21B are made, for example, from the above-mentioned paper 50NFB.

The polymer layer 35 is a cylindrical element covering the circumference of the filter rod 17 and extending along the entire length of the filter rod 17. The polymer layer 35 has a density of from 0.5 to 1.0 g / cm ³ . The polymer layer 35 is an example of a sheet-like element and is made, for example, of a hot-melt adhesive. The polymer layer 35 is not limited to a hot-melt adhesive, but may be a different type of material, such as starch, polyvinyl alcohol, or a carboxymethyl cellulose-based material.

Fitzella 21A, second Fitzella 21B and the polymer layer 35, which make up the plurality of layers (three layers), have a total thickness A in the range of 100 to 250 μm.

As shown in FIG. 20, the first ficella 21A and the second ficella 21B are attached to each other at a point in the circumferential direction of the filter rod 17 by adhesive (first adhesive 31). The second ficella 21B and the rim paper 16 are attached to each other at a point in the direction of the circumference of the filter rod by adhesive (second adhesive 32). The first adhesive 31 and the second adhesive 32 are applied so that they extend linearly along the length of the filter 15 in the longitudinal direction of the cigarette 11.

According to a fourth embodiment, at least one of the leaf-shaped elements is Fitzella 21 and at least one of the leaf-shaped elements is a polymer layer 35. Even though one of the leaf-shaped elements is a polymer layer 35, according to the fourth embodiment, a cigarette 11 can be completely round and at the same time provide an improved sensation when the smoker crushes the capsule. Since the polymer layer 35 is used as the sheet-like element, the liquid contents of the capsule 25 are prevented from penetrating into and leaving the sheet-like element.

Fifth Embodiment

Cigarettes 11 according to a fifth embodiment will be described with reference to FIG. The fifth embodiment differs from the third embodiment with respect to the structure of the sheet-like elements that wrap around the filter rod 17. Thus, the description will mainly be devoted to how the fifth embodiment differs from the third embodiment. As for the common features with the third embodiment, corresponding descriptions and illustrations will not be presented. In the longitudinal direction, the cigarette 11 according to the fifth embodiment has a structure similar to that of the cigarettes according to the third aspect (Fig. 12) and the fourth aspect (Fig. 13) of the first embodiment, although the sheet-like elements (ficella and polymer layer) differ in number.

FIG. 21 is a cross-sectional view of a cigarette 11 according to a fifth embodiment, and this cross-section is drawn along a line corresponding to line F14-F14 in FIGS. 12 and 13.

As shown in FIG. 21, a cigarette 11 is constituted by: (i) a tobacco rod 14 including tobacco filling 12 (ground tobacco leaves) and cigarette paper wrapped around the tobacco filling 12; (ii) a filter 15 adjacent to the tobacco rod 14; and (iii) rim paper 16 wrapped around the tobacco rod 14 and the filter 15 and used to connect the tobacco rod 14 and the filter 15.

The filter 15 comprises a filter rod 17, a Fitzella 21 wrapped around the filter rod 17, a first polymer layer 35A located between the Fitzella 21 and the filter rod 17, a second polymer layer 35B located between the Fitzella 21 and the rim paper 16, and a flavor capsule 23 located similarly to a capsule according to the third aspect (FIG. 12) or the fourth aspect (FIG. 13).

Fitzella 21 is an example of a sheet-like element and is made, for example, from the above-mentioned 50NFB paper. Fitzella 21 has a density of 0.5 to 1.0 g / cm ³ and a thickness of 50 to 125 microns.

Each of the first polymer layer 35A and the second polymer layer 35B has a cylindrical shape and extends along the entire length of the filter rod 17. Each of the first polymer layer 35A and the second polymer layer 35B has a density of from 0.5 to 1.0 g / cm ³ . Each of the first polymer layer 35A and the second polymer layer 35B is an example of a sheet-like element and is made, for example, of a hot-melt adhesive. Each of the first polymer layer 35A and the second polymer layer 35B is not limited to a hot-melt adhesive, but may be a different type of material, such as starch, polyvinyl alcohol, or a carboxymethyl cellulose-based material.

Fitzella 21, the first polymer layer 35A and the second polymer layer 35B that make up the plurality of layers (three layers) have a total thickness A in the range of 100 to 250 μm.

According to a fifth embodiment, at least one of the leaf-shaped elements is a ficella 21 and at least one of the leaf-shaped elements is a polymer layer 35. Even though one of the leaf-shaped elements is a polymer layer 35, according to the fifth embodiment, a cigarette 11 can be completely round and at the same time provide an improved sensation when the smoker crushes the capsule. Since the polymer layer 35 is used as the sheet-like element, the liquid contents of the capsule 25 are prevented from penetrating into and leaving the sheet-like element.

It should be noted that cigarettes are not limited to the cigarettes described in connection with the above embodiments, and the structural elements of cigarettes can be modified in various ways without deviating from the idea of the present invention when it is put into practice. For example, in the foregoing embodiments, the ficella 21 is used as an example of a sheet-like element, but the film can also be used as a sheet-like element. The number of leaf-shaped elements (layers) is not limited to two or three, but may be four or more. In addition, some of the structural elements may be excluded from the embodiments, and the structural elements according to various embodiments may be combined accordingly during the practical implementation of the embodiments.

List of items

11 cigarette

12 tobacco filler

13 cigarette paper

14 tobacco rod

15 filter

16 rim paper

17 filter rod

21 ficella

23 flavor capsule

24 hollow section

35 polymer layer

Claims (20)

1. A cigarette containing: a tobacco rod comprising tobacco filler and cigarette paper wrapped around the tobacco filler; a filter including a filter rod containing filter material, a plurality of ficelles wrapped around the filter rod so that they form a plurality of layers, and a capsule located in the filter and including a capsule shell containing liquid contents; and rim paper wrapped around the tobacco rod and the filter so that it connects the tobacco rod and the filter, moreover, each of the ficella has a density of from 0.5 to 1.0 g / cm ³ , and however, the ficelles, which make up the many layers, have a total thickness in the range from 100 to 250 microns. 2. The cigarette of claim 1, wherein the plurality of layers comprise two layers. 3. The cigarette of claim 1, wherein the plurality of layers comprise three layers. 4. The cigarette according to claim 1, in which each ficella has a thickness in the range from 50 to 125 microns. 5. A cigarette containing: a tobacco rod comprising tobacco filler and cigarette paper wrapped around the tobacco filler; a filter including a filter rod comprising filter material, a plurality of leaf-shaped elements wrapped around the filter rod so that they form a plurality of layers, and a capsule located in the filter and including a capsule shell containing liquid contents; and rim paper wrapped around the tobacco rod and the filter so that it connects the tobacco rod and the filter, moreover, each of the leaf-shaped elements has a density of from 0.5 to 1.0 g / cm ³ , and while the leaf-shaped elements that make up the many layers have a total thickness in the range from 100 to 250 microns, wherein at least one of the leaf-shaped elements is a ficella and at least one of the leaf-shaped elements is a polymer layer. 6. The cigarette according to claim 5, in which the polymer layer includes an adhesive. 7. The cigarette of claim 5, wherein the plurality of layers comprise two layers. 8. The cigarette of claim 5, wherein the plurality of layers comprise three layers. 9. The cigarette according to claim 5, in which each of the leaf-shaped elements has a thickness in the range from 50 to 125 microns.

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