WO2015146583A1

WO2015146583A1 - Combustion type smoking article

Info

Publication number: WO2015146583A1
Application number: PCT/JP2015/057108
Authority: WO
Inventors: 佑一松本; 研児伊藤; 亮祐長瀬
Original assignee: 日本たばこ産業株式会社
Priority date: 2014-03-25
Filing date: 2015-03-11
Publication date: 2015-10-01
Also published as: TW201540202A; JP2017093297A

Abstract

Provided is a combustion type smoking article wherein filter material does not melt and there is no dying out when a tobacco sheet is combusted and smoked. The combustion type smoking article is provided with a rod-shaped combustion part with a lighting end formed on a tip side and a filter part connected to the combustion part on a base end side. The combustion part includes a tobacco sheet formed so as to follow along the longitudinal direction from the lighting end to the base end side and a winding paper disposed so as to cover at least part of the tobacco sheet. A heat resistant filter having heat resistance at least on the connection end side that is connected with the combustion part is disposed in the filter part.

Description

Combustion-type smoking article

The present invention relates to a combustion type smoking article.

Non-combustion type flavor suction articles that heat tobacco and suck a vapor component containing nicotine without burning the tobacco are known. In this type of non-combustion type flavor suction article, the winding including the cigarette sheet wound in a cylindrical shape has a hollow cylindrical structure, and the flavor is sucked by inserting the coil into the hollow part of the heater that also has a hollow cylindrical structure and heating it. A non-burning type flavor suction article that can be used has also been proposed (see, for example, Patent Document 1).

The tobacco sheet is produced, for example, by using a tobacco raw material (lamina, middle bone, etc.) as a main raw material, adding a fiber, an auxiliary agent, and the like to form a sheet and then drying.

International Publication No. 2010/047389 Special table 2010-514437

A non-combustion type flavor suction article provided with a tobacco sheet requires a heater or the like for heating the tobacco sheet without burning it, so that the suction article becomes large and the manufacturing cost tends to increase. Therefore, when trying to apply to a burning-type smoking article that smokes by smoking cigarette sheets, simply trying to smoke a cigarette sheet may cause high-temperature smoke to flow into the filter part and the filter material to melt by the heat of the smoke There is. In addition, the tobacco sheet alone has poor combustion sustainability and may cause so-called disappearance.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide a combustion-type smoking article in which a filter material does not melt or disappear when a tobacco sheet is burned and smoked. .

In the present invention, the following means are adopted in order to solve the above problems. That is, a combustion-type smoking article according to the present invention includes a rod-shaped combustion part having an ignition end formed on a front end side, and a filter part connected to a base end side of the combustion part, and the combustion part is A cigarette sheet formed so as to extend along the longitudinal direction from the ignition end to the base end side, and a wrapping paper disposed so as to cover at least a part of the cigarette sheet. A heat-resistant filter having heat resistance is disposed on a connection end connected to the combustion part. In the present invention, the tobacco sheet can be formed into various shapes. For example, the tobacco sheet may be formed in a hollow cylindrical shape. Further, the cigarette sheet is folded in a bellows shape, and the wrapping paper may be arranged so as to cover the periphery of the cigarette sheet folded in the bellows shape.

In the present invention, since at least a part of the cigarette sheet is covered with the wrapping paper, it is possible to improve the combustion stability of the combustion part during smoking. As a result, the disappearance of the tobacco sheet can be suppressed. Furthermore, in the present invention, a heat resistant filter having heat resistance is disposed on the connection end side of the filter portion. Therefore, even if the smoke generated by the combustion of the tobacco sheet flows into the filter part while being kept at a high temperature, a heat-resistant filter is arranged on the connection end side of the filter part as described above. There is no risk of melting.

In the combustion-type smoking article according to the present invention, the heat-resistant filter may be constituted by a paper filter.

The filter section includes a first section on a connection end side connected to the combustion section, and a second section positioned closer to the suction end than the first section, and a heat-resistant filter is disposed in the first section. An acetate filter may be provided in the second section. As described above, by disposing the acetate filter at the subsequent stage of the heat-resistant filter, it is possible to reduce the manufacturing cost while improving the quality of the combustion-type smoking article, and to improve the design ease.

Further, the filter part and the combustion part may be wound together by chip paper, and the chip paper may be stacked twice or more. By doing in this way, it can be made difficult to convey heat to the smoker's finger holding the filter part.

In addition, the filter unit and the combustion unit are integrally wound by chip paper, and the chip paper is subjected to uneven processing that makes it difficult to transfer heat to a finger that holds the filter unit. Also good. By doing in this way, it can be made difficult to convey heat to the smoker's finger holding the filter part.

Further, a flavor release material that releases a flavor when heated may be disposed in the filter unit. By doing in this way, a flavor can be discharge | released from a flavor releasing material using the heat | fever of the high temperature smoke which flows into a filter part from a tobacco sheet | seat side. According to this, since the flavor can be released from the flavor release material without requiring a special action from the smoker, a user-friendly smoking article can be provided.

The filter section includes a first section on a connection end side connected to the combustion section, and a second section located at a suction end than the first section, and the flavor release material is the first section. It may be arranged. Thus, the release of the flavor using the heat of the smoke flowing into the filter part can be promoted by bringing the position where the flavor release material is arranged closer to the combustion part. As a result, the flavoring of smoke can be performed more efficiently.

In this case, for example, the flavor release material may be accommodated in a capsule having heat friability, and the capsule may be included in a heat-resistant filter disposed in the first section. Alternatively, a fragrance as a flavor release material may be added or impregnated directly to the heat resistant filter disposed in the first section. In addition, the flavor releasing material of this invention is exposed to temperature higher than arrange | positioning to a normal tobacco filter. Therefore, it is possible to select and use a flavor release material that releases a flavor only after being exposed to a high temperature. In addition, when a flavor release material having a high temperature at which flavor release is started is selected in this way, there is an advantage that the flavor can be hardly released during storage even in summer. The filter section includes a first section on a connection end side connected to the combustion section, and a second section arranged with a hollow section in the rear stage of the first section, and the flavor release material is the It may be disposed in the cavity. Even when the flavor release material is arranged in such a hollow portion, the flavor can be released from the flavor release material by utilizing the heat of high-temperature smoke flowing into the filter portion from the tobacco sheet side.

Further, in the combustion-type smoking article according to the present invention, a through-hole penetrating in the thickness direction may be arranged in the tobacco sheet. Thus, by arranging the through holes in the tobacco sheet, the surface area of the tobacco sheet can be increased, and oxygen can be sufficiently supplied during the combustion of the tobacco sheet. As a result, the tobacco sheet can be easily burned at the time of smoking, and the disappearance can be made more difficult to occur.

In addition, an uneven pattern may be formed on the surface of the tobacco sheet. Thus, by forming a concavo-convex pattern on the surface of the tobacco sheet, the surface area of the tobacco sheet can be increased as in the case where the through holes are provided. Therefore, the tobacco sheet can be easily burned at the time of smoking, and the disappearance can be made more difficult to occur.

Further, the surface of the tobacco sheet facing the wrapping paper may be smooth, and the uneven pattern may be formed on the other surface. According to this, by smoothing the surface of the cigarette sheet that faces the wrapping paper, the adhesion of the surface to the wrapping paper is improved, and the combustion stability of the burning part during smoking is further improved. Can do. And since the surface area of a tobacco sheet increases by forming an uneven | corrugated pattern in the surface which is not facing a wrapping paper among tobacco sheets, the disappearance of the tobacco sheet at the time of smoking can be suppressed suitably.

In addition, the means for solving the problems in the present invention can be employed in combination as much as possible.

According to the present invention, it is possible to provide a combustion-type smoking article in which the filter material does not melt or disappear when the tobacco sheet is burned and smoked.

1 is an external view of a combustion-type smoking article according to Embodiment 1. FIG. FIG. 2 is a diagram illustrating an internal structure of the combustion-type smoking article according to the first embodiment. FIG. 3 is a graph showing the temperature measurement results of the filter section during smoking of the combustion-type smoking article according to Comparative Example 1. FIG. 4 is a graph showing the temperature measurement results of the filter part during smoking of the combustion type smoking article according to Comparative Example 2. FIG. 5 is a graph showing the temperature measurement results of the filter portion during smoking of the combustion-type smoking article according to the example. FIG. 6 is a diagram illustrating an internal structure of the combustion-type smoking article according to the second embodiment. FIG. 7 is a view showing the internal structure of the combustion-type smoking article according to the third embodiment. FIG. 8 is a diagram for explaining a cylindrical tobacco sheet according to the fourth embodiment. FIG. 9 is a diagram showing a measurement result of natural combustion time in a cylindrical tobacco sheet. FIG. 10 is a view for explaining an aspect of the through holes arranged in the tobacco sheet according to the example. FIG. 11 is a graph showing measurement results of the natural combustion time of the example. FIG. 12 is a diagram illustrating a cylindrical tobacco sheet according to the fifth embodiment. FIG. 13 is a view showing a modification of the combustion section.

Here, an embodiment of a combustion type smoking article according to the present invention will be described based on the drawings. Further, the dimensions, materials, shapes, relative arrangements, and the like of the components described in the present embodiment are not intended to limit the technical scope of the invention only to those unless otherwise specified. Absent.

<Embodiment 1>
FIG. 1 is an external view of a combustion-type smoking article 1 according to the first embodiment. FIG. 2 is a diagram illustrating an internal structure of the combustion-type smoking article 1 according to the first embodiment. The combustion type smoking article 1 has a rod-shaped combustion part 2 and a filter part 3. The combustion part 2 has a hollow cylindrical structure, the front end side is formed as an ignition end, and the base end side is connected to the filter part 3 via a chip paper (chip paper) 4.

Combustion unit 2 includes a cigarette sheet (hereinafter referred to as a “cylindrical cigarette sheet”) 21 formed in a hollow cylindrical shape and a wrapping paper 22 arranged so as to cover the outer periphery of this cylindrical cigarette sheet 21. Has been. The cylindrical tobacco sheet 21 and the wrapping paper 22 extend along the longitudinal direction from the ignition end to the base end side of the combustion unit 2. The tobacco sheet used for the cylindrical tobacco sheet 21 (a sheet-like tobacco sheet before being rolled) can be manufactured by a known method. To explain an example of a method for producing a tobacco sheet, a dried leaf tobacco raw material is roughly crushed, and then added with water and stirred to separate into a water extract and an insoluble tobacco residue. The water extract is dried under reduced pressure and concentrated. Add pulp to insoluble tobacco residue, fiberize with refiner, and make paper. A concentrated sheet of water extract is added to the paper sheet and dried to produce a tobacco sheet.

The tobacco sheet produced as described above is rolled into a hollow cylindrical shape. When the sheet-like tobacco sheet is rolled, the end portion of the tobacco sheet may be bonded. Moreover, the winding number of a tobacco sheet is not specifically limited. Single winding may be sufficient and it may be wound by double or more. The shape of the tobacco sheet before being formed into a hollow cylinder is preferably approximately square or approximately rectangular, and is preferably rounded parallel to the longitudinal direction to form a hollow cylinder.

The wrapping paper 22 surrounds the outer surface side of the cylindrical tobacco sheet 21. The wrapping paper 22 has a function of improving the combustion stability of the cylindrical tobacco sheet 21, maintains a high combustion temperature when the cylindrical tobacco sheet 21 is burned, generates soot, and the cylindrical tobacco sheet 21. Contributes to suppressing the disappearance of. The air permeability of the wrapping paper 22 is not limited to a specific one, but is preferably 10 to 60 coresta units (CU: CORESTA Unit), and particularly preferably 30 to 40 coresta units. In this specification, the air permeability refers to the flow rate of air passing through 1 cm ² of wrapping paper per minute when the differential pressure between the upper and lower surfaces of the wrapping paper is 100 mmH ₂ O ([CU] = [ml / min]) It is. Moreover, in this embodiment, although the front-end | tip position of the wrapping paper 22 and the front-end | tip position of the cylindrical tobacco sheet | seat 21 are arrange | equalized, either may be long. For example, since the wrapping paper 22 is more combustible than the cylindrical tobacco sheet 21, it is expected that the ignition is stable when the wrapping paper 22 is longer than the cylindrical tobacco sheet 21. Moreover, when the cylindrical tobacco sheet 21 is long, the cylindrical tobacco sheet 21 burns from the time of ignition, so that the smoker can expect to taste the tobacco flavor from the first puff.

The wrapping paper 22 should just be arrange | positioned so that at least one part of the cylindrical tobacco sheet | seat 21 may be covered. Moreover, the cylindrical tobacco sheet 21 and the wrapping paper 22 wound around the cylindrical tobacco sheet 21 may be partially or entirely bonded to each other, or may not be bonded. In particular, when only the filter side is bonded, the fall off of the cigarette sheet can be suppressed until the second half of smoking while suppressing the influence of the taste caused by the adhesive. In addition, the wrapping paper 22 can use suitably what is marketed for normal cigarettes. Reference numeral 23 denotes a “hollow portion” formed inside the cigarette sheet 21. The hollow part 23 extends along the longitudinal direction of the combustion part 2. In the present embodiment, the wrapping paper 22 is wound around the outer side of the cylindrical tobacco sheet 21, but may be arranged so as to cover the inner surface of the cylindrical tobacco sheet 21.

Next, the filter unit 3 according to the embodiment will be described in detail. Of the filter unit 3, the end connected to the combustion unit 2 is referred to as a “connection end 3 a”, and the end opposite to the “connection end 3 a” is referred to as a “suction end 3 b”. . The mouth end 3b of the filter unit 3 is the end of the filter unit 3 that is received by the smoker during smoking.

The filter unit 3 includes a first section 31 located on the connection end 3 a side and a second section 32 located on the suction end 3 b side relative to the first section 31. A paper filter 5 is disposed in the first section 31.

Here, the paper filter 5 is a filter obtained by, for example, making paper from wood pulp and forming it into a filter chip, and is a heat resistant filter having excellent heat resistance. On the other hand, the acetate filter 6 is disposed in the second section 32 of the filter unit 3. The acetate filter 6 is a filter medium (filter medium) obtained by winding a fiber bundle in which cellulose acetate is formed into a cylindrical shape with a paper roll. The acetate filter 6 has a lower melting point than the paper filter 5. As described above, in the filter part 3, the paper filter 5 (heat-resistant filter) and the acetate filter 6 are arranged in series from the connection end part 3a located on the tip side toward the mouth end part 3b.

Also, the paper filter 5 is added or impregnated with a fragrance as a flavor release material that releases (releases) the flavor when heated. Examples of the fragrance added to or impregnated in the paper filter 5 include alfalfa extract, caramel, peruvian balsam resinoid, apple concentrated essence, beeswax absolute, carob extract (gum, powder), cellulose, clary sage extract, ethyl laurate, Ethyl octadecanoate, ethyl oleate, ethyl 10-undecanoate, ethyl vanillin glucoside, fenugreek extract, glycerin, guava extract, honey (extract), sodium 4-hydroxyundecanoate, jasmine extract, licorice extract (paste) , Powder), mate extract, honey (distilate, essence, extract, tincture), myristi Acid, octadecanoic acid, olivenum extract, palmitic acid, plum extract (fruit juice), propylene glycol, prune extract (fruit juice), raisin extract (fruit juice), rum (extract), sorbitol, stearic acid, sucrose Isobutyrate acetate, sucrose palmitate, corn syrup (liquid sugar), fructose, glucose, corn syrup (high fructose liquid sugar), invert sugar, sucrose, tea extract (powder), tocopherol, tomato extract, And triethyl citrate.

Next, the chip paper 4 will be described. The chip paper 4 is connected by winding up the end region in the combustion unit 2 and the filter unit 3 by integrally winding them. In the present embodiment, the chip papers 4 are stacked twice or more. The chip paper 4 may be double-wound or may be wound more than three times.

In the combustion-type smoking article 1 configured as described above, since the cylindrical tobacco sheet 21 is formed of a papermaking sheet made of tobacco raw material, for example, the strength can be increased compared to a rolled sheet, a slurry sheet, and the like. There are merits that dirt is not easily attached to the hand when wound, and is hardly damaged. However, the cylindrical tobacco sheet 21 may be formed of a rolled sheet or a slurry sheet of tobacco raw materials. Moreover, since the cylindrical tobacco sheet | seat 21 can operate an extract, component control is easy and it becomes easy to suppress the dispersion | variation in quality. For example, a technique for enhancing the fragrance feeling by adding sugar to the extraction solvent and performing a heating / pressurizing process as an operation of the extraction liquid, or a technique for reducing the hotness and irritation by reducing the colored acidic water-soluble polymer substance (for example, International Publication No. 2006/046517). Moreover, since the capacity | capacitance which can add a fragrance | flavor is large, the addition freedom degree of a water-soluble or fat-soluble fragrance | flavor is higher than a normal tobacco cut.

Also, the cylindrical tobacco sheet 21 has an advantage of high quality stability because the composition ratio of the raw materials can be controlled with high accuracy. Further, according to the cylindrical tobacco sheet 21, a low tar smoking article can be easily manufactured without introducing outside air into the filter portion 3 from the vent hole formed in the chip paper 4. Moreover, since the usage amount of the cylindrical cigarette sheet 21 arranged in the combustion part 2 can be set freely, in a normal cigarette, if the amount of cigarette engraving is reduced, the tipping is likely to occur, but the cylindrical cigarette sheet 21 If this happens, it will be difficult for such a decline. Moreover, the amount of tar and the smoking time (number of puffs) can be freely controlled by adjusting the usage amount of the cylindrical tobacco sheet 21 disposed in the combustion unit 2. The adjustment of the amount of use can be achieved by changing the number of windings of the cylindrical tobacco sheet 21 or the basis weight of the cylindrical tobacco sheet 21. In addition, the tobacco sheet used for the cylindrical tobacco sheet 21 has a merit that there is little variation in raw material blending, and there is little dust contamination during production.

The combustion-type smoking article 1 of the present embodiment has solved the following problems when it is burned while enjoying the advantages of the cylindrical tobacco sheet 21 described above. That is, since the smoking article 1 is provided with the wrapping paper 22 so as to surround the outer side of the cylindrical tobacco sheet 21, the combustion stability of the cylindrical tobacco sheet 21 can be improved. That is, by burning the wrapping paper 22 together with the cylindrical cigarette sheet 21, it is possible to maintain a high combustion temperature and suppress the occurrence of soot and disappearance during smoking.

Moreover, since the combustion part 2 (cylindrical tobacco sheet 21) has a hollow cylindrical structure, high-temperature smoke flows into the filter part 3 through the hollow part 23. On the other hand, since the heat-resistant paper filter 5 is used as the filter disposed in the first section 31 located on the connection end 3a side of the filter unit 3, there is no possibility that the paper filter 5 is melted. Here, the paper filter 5 is an example of a heat-resistant filter, and may include a molded body using a heat-resistant material such as glass fiber, charcoal / calcium carbonate, or the like.

Note that the length in the longitudinal direction of the filter portion 3 is preferably 27 mm or more. By securing the length of the filter part 3 to about 27 mm, the smoke temperature can be sufficiently lowered before the smoker sucks the smoke from the mouth end part 3b. Further, although there is no particular limitation on the upper limit of the length of the filter unit 3, it is realistic to set the upper limit to, for example, about 50 mm.

Furthermore, since the combustion-type smoking article 1 is formed by stacking the tip papers 4 in two or more layers, it is possible to make it difficult to transfer heat to the smoker's finger holding the filter unit 3. Note that it is preferable that the chip paper 4 is subjected to uneven processing by embossing or the like instead of using a plurality of turns of the chip paper 4 or in combination. Moreover, you may form the chip paper 4 with a heat insulating material. Thereby, it is possible to make it difficult to transfer heat to the finger holding the filter unit 3.

Furthermore, the second section 32 of the filter unit 3 is manufactured while improving the quality of the entire combustion-type smoking article 1 by disposing the acetate filter 8 that is easy to design, inexpensive, and has excellent smoke component adsorption performance. Cost can be reduced and design ease can be secured.

In addition, the paper filter 5 disposed in the first section 31 of the filter unit 3 is added or impregnated with a fragrance (flavor release material) that releases a flavor when heated, so that the hollow of the combustion unit 2 The flavor can be released from the fragrance using the heat of the smoke supplied through the section 23. According to this, since a flavor can be released from a fragrance | flavor, without requiring a special operation from a smoker, a user-friendly smoking article can be provided. In particular, in this embodiment, the fragrance | flavor as a flavor releasing material is arrange | positioned in the comparatively near position of the combustion part 2 by adding or impregnating the paper filter 5 arrange | positioned at the 1st section 31 of the filter part 3. FIG. be able to. Therefore, it is possible to promote the release of flavor using the heat of the smoke flowing into the filter unit 3. As a result, the flavoring of smoke can be performed more efficiently.

In addition, as the fragrance | flavor added or impregnated to the paper filter 5, although the raw material itself does not have a strong fragrance, it is preferable to use what emits a characteristic fragrance by heating. Moreover, in this embodiment, since the fragrance | flavor added or impregnated to the paper filter 5 will be exposed to temperature higher than arrange | positioning to a normal cigarette filter, it seems that a flavor is discharge | released only by exposing to high temperature. Perfume can be selected and used. Thus, when the fragrance | flavor with high temperature which starts discharge | release of a flavor is selected, there exists an advantage that a flavor can be made hard to be discharge | released during storage also in summer.

Here, adjustment of the usage amount of the cylindrical tobacco sheet 21 arranged in the combustion unit 2 can be easily performed by changing the number of turns when the cylindrical tobacco sheet 21 is rolled. As the number of turns of the cylindrical tobacco sheet 21 is increased, the combustion speed of the combustion section 2 (cylindrical tobacco sheet 21) tends to be slower. In this way, the combustion rate of the cylindrical tobacco sheet 21 can be controlled by adjusting the number of turns of the cylindrical tobacco sheet 21. However, if the number of turns of the cylindrical tobacco sheet 21 is excessively increased, the risk of disappearing during smoking increases, so that the number of turns of the cylindrical tobacco sheet 21 may be determined in consideration of this point.

<Example>
Examples The present invention will be described more specifically with reference to examples. However, the present invention is not limited to the description of the following examples unless it exceeds the gist.

In Examples, basis weight 60 g / m ² , coating ratio (coating ratio = [soluble component / weight of sheet after coating with soluble component] × 100 [%] (soluble component is extracted from tobacco leaf with water. Sheet) The weight includes soluble components, tobacco leaf residue after extraction, and pulp weight)) 40 ± 2%, 60 × 65 mm cigarette sheet is rolled into a hollow cylindrical shape, and the formed cylindrical tobacco sheet A wrapping paper was wound around the outside to produce a combustion section. The length of the combustion part was 57 mm in total length and 7.8 mm in diameter. Further, the cylindrical tobacco sheet and the wrapping paper were brought into close contact with each other and were not glued. And the combustion type smoking article was produced by connecting said combustion part to the filter part prepared separately through chip paper. In the filter part, a paper filter was arranged in a range of 5 mm from the connection end part side with the combustion part, and an acetate filter having a length of 22 mm was arranged in the rear stage of the paper filter.

Comparative Example 1 is a combustion-type smoking article in which a combustion part is produced by winding a normal tobacco leaf with a wrapping paper, and this combustion part is connected to a filter part by a paper filter. In Comparative Example 1, an acetate filter was disposed over the entire length (27 mm) of the filter portion. The comparative example 2 was produced by arrange | positioning an acetate filter over the full length of the filter part of the Example mentioned above.

Each combustion-type smoking article (Example, Comparative Example 1 and Comparative Example 2) produced in this way was subjected to an automatic smoker (SERULEAN Co., Ltd.) in an environment of room temperature 22 ° C., relative humidity 60%, and wind speed 0.2 m / second. SM410) and smoked in accordance with ISO standard smoking conditions (repeating 35 mL of smoke for 2 seconds with a single empty puff per combustion type smoking article at intervals of 58 seconds). Then, a position 3 mm inward from the tip (connection end) in the filter part (hereinafter referred to as “combustion part side measurement position”) and a position 3 mm inward from the mouth end (hereinafter referred to as “suction side measurement position”). ), Insert a thermocouple (SF30-K thermocouple φ0.25 × 100mm, manufactured by Gospel Special Metal Co., Ltd.) into the center of each filter cross section, and measure the maximum internal temperature at each number of puffs (GRAPHTEC) Measured with midi LOGGGER type GL200.

FIGS. 3 to 5 are graphs showing temperature measurement results of the filter portion during smoking of the combustion type smoking articles according to Comparative Example 1, Comparative Example 2, and Example. In Comparative Example 1, since the cigarette is filled in the combustion part, as shown in FIG. 3, the internal temperature is the same at the combustion part side measurement position and the suction side measurement position up to the fourth puff. there were. In the 5th and 6th puffs, the fire type part may approach the filter part, and the internal temperature at the combustion part side measurement position was higher than that at the suction side measurement position. On the other hand, in Comparative Example 2 in which a cylindrical cigarette sheet is arranged in the combustion part and the entire filter part is an acetate filter, the internal temperature at the suction side measurement position is maintained at about 50 ° C. or less as shown in FIG. However, the internal temperature at the measurement position on the combustion part side increased to about 130 ° C. at the maximum. Compared with Comparative Example 1, Comparative Example 2 has a higher internal temperature at the measurement position on the combustion part side. Comparative Example 2 has a hollow cigarette sheet that is formed in a hollow cylindrical shape. This is because high-temperature smoke directly flows into the filter portion through the filter. In Comparative Example 2, since the acetate filter is arranged over the entire length of the filter portion, the acetate filter melts at the combustion portion side measurement position where the internal temperature is well over 100 ° C., and adversely affects the flavor. There is a fear.

On the other hand, when the example shown in FIG. 5 and the comparative example 2 shown in FIG. 4 were compared, the internal temperature at the suction side measurement position was almost the same between the example and the comparative example 2. On the other hand, the internal temperature at the combustion portion side measurement position was maintained at a lower temperature in the example than in the comparative example 2. In the filter part of the example, a paper filter having heat resistance is arranged at the measurement position on the combustion part side, and this paper filter generally has a lower thermal conductivity than an acetate filter. The reason that the temperature at the suction side measurement position was lower in Example than in Comparative Example 2 is considered to be due to the difference in thermal conductivity between the paper filter and the acetate filter.

<Embodiment 2>
FIG. 6 is a diagram illustrating an internal structure of a combustion type smoking article 1A according to the second embodiment. Here, it demonstrates centering on difference with Embodiment 1. FIG. The combustion type smoking article 1A is different from the filter unit 3 according to the first embodiment in the structure of the filter unit 3A. Specifically, in the filter unit 3A, a flavor release material 7 that releases a flavor when heated is included in the paper filter 5 disposed in the first section 31 located on the connection end 3a side. . The flavor release material 7 is obtained by enclosing a fragrance in a heat-crushable capsule. This heat-crushable capsule may be a seamless capsule, for example.

Flavor-releasing material at the time of smoking without smashing the capsule using the heat of hot smoke introduced from the combustion part 2 side to the filter part 4A by enclosing the fragrance in the heat-crushable capsule 7 can release a flavor. In particular, since the flavor release material 7 is provided in the first section 31 located on the connection end 3a side of the filter portion 4A, the release of the flavor from the flavor release material 7 can be promoted, and the smoke flavor Seasoning can be performed more efficiently.

Moreover, as a physical property of the capsule, conventionally, it has been necessary to suppress the strength of the capsule to a level that can be easily broken by the force of a finger, whereas the flavor release material 7 in the present embodiment has a smoke as described above. Since it can be crushed using heat, it is possible to use a capsule having a higher strength (higher hardness) than the conventional one for the flavor release material 7. According to this, the risk that the capsule will be crushed at the time of manufacture or transportation can be reduced. In addition, in this embodiment, you may comprise the flavor releasing material 7 by enclosing a fragrance | flavor in the microcapsule which has heat crushability, a clathrate, etc. FIG.

Further, the flavor release starting temperature of the flavor release material 7 may be adjusted so as to release the flavor when heated to a predetermined temperature or higher. For example, the physical properties of the heat-crushable capsule in the flavor release material 7 may be adjusted so as to crush when exposed to heat of about 60 ° C. The flavor release start temperature may be set according to the temperature of the smoke flowing into the filter part 3A through the hollow part 23 of the combustion part 2 during smoking.

Examples of the fragrances to be encapsulated in a capsule having heat friability include, for example, acetanisole, 2-acetyl-3-methylpyrazine, acetylpyrazine, 2-acetylthiazole, amyl alcohol, amyl butyrate, trans-anethole, star anise oil , Peru balsam oil, cardamom oil, benzaldehyde, benzoin resinoid, benzyl alcohol, benzyl benzoate, benzyl propionate, 2-butanol, 4- (2-butenylidene-3,5,5-trimethyl-2-cyclohexen-1-one , Butyl butyrate, Butyric acid, Carob absolute (oleoresin), L-carvone, β-caryophyllene, Cassia bark oil (oleoresin), Cedarwood oil, Celery seed oil, Camomil oil (absolute), Cinnamaldehyde, Cinnamic acid, Kei Cinnamyl cinnamate, citronellyl acetate, co A (distilate, extract, nibutinchuchar, powder, shell), coffee (extract, oleoresin), cognac oil, coriander oil, cuminaldehyde, davana oil, δ-decalactone, γ-decalactone, decanoic acid, 4 , 5-Dimethyl-3-hydroxy-2,5-dihydrofuran-2-one, 3,7-dimethyl-6-octenoic acid, 2,5-dimethylpyrazine, 2,6-dimethylpyrazine, ethyl 2-methylbutyrate , Ethyl acetate, ethyl butyrate, ethyl hexanoate, ethyl isovalerate, ethyl lactate, ethyl levulinate, ethyl maltol, ethyl octanoate, ethyl phenylacetate, ethyl propionate, ethyl vanillin, 2-ethyl-3, (5 or 6) -Dimethylpyrazine, 5-ethyl-3-hydroxy-4-methyl 2 (5H) -furanone, 2-ethyl-3-methylpyrazine, eucalyptol, fenugu Quab absolute, Gene absolute, Geraniol, geranyl acetate, guaiacol, γ-heptalactone, γ-hexalactone, hexanoic acid, cis-3-hexen-1-ol, hexyl acetate, 4-hydroxy-4- (3-hydroxy -1-butenyl) -3,5,5-trimethyl-2-cyclohexen-1-one, 4- (para-hydroxyphenyl) -2-butanone, hydroxypropylcellulose, immortel absolute, β-ionone, isoamyl acetate , Isoamyl butyrate, isoamyl hexanoate, isoamyl phenylacetate, isoamyl propionate, isobutyl acetate, isobutyl phenylacetate, jasmine absolute, cola nut tincture, labdanum oil (absolute, extract, oleoresin, resinoid), lemon terpeneless oil, Lime oil (terpene Oil), linalool, linalyl acetate, lobe oil (extract), maltol, medium chain fatty acid triglycerides, menthol, menthone, L-menthyl acetate, paramethoxybenzaldehyde, methyl 2-pyrrolyl ketone, methyl anthranilate, methyl phenylacetate, methyl salicylate 6-methyl-5-hepten-2-one, 4′-methylacetophenone, methylcyclopentenolone, 3-methylvaleric acid, mimosa absolute, nerolidol, γ-nonalactone, nutmeg oil, δ-octalactone, octanal, Octanoic acid, orange flower oil, orange oil, Oris root oil, ω-pentadecalactone, peppermint oil (absolute), petitgrain paraguay oil, phenethyl alcohol, phenyl acetate phenethyl, phenyl acetate, piperonal, propenyl gua Tall, propyl acetate, rose oil (absolute, extract), rum (extract), sage oil, spearmint oil (terpeneless oil), stylax absolute, tea distilate (resinoid), α-terpineol, terpinyl acetate, 5,6,7,8-tetrahydroquinoxaline, 1,5,5,9-tetramethyl-13-oxacyclo (8.3.0.0 (4.9)) tridecane, 2,6,10,10-tetramethyl-1-oxaspiro [ 4,5] deca-2,6-dien-8-one, 2,3,5,6-tetramethylpyrazine, 2-tridecanone, 4- (2,6,6-trimethyl-1-cyclohexenyl) -2 -Buten-4-one, 2,6,6-trimethyl-2-cyclohexene-1,4-dione, 4- (2,6,6-trimethyl-1,3-cyclohexadienyl) -2-butene-4 -On, 2,3,5-trimethylpyrazine, γ-undecalactone, γ-valerolactone, vanilla extract (oleoresin , Mention may be made of vanillin, veratraldehyde, vetiver oil, violet leaf absolute, and the like.

In the present embodiment, since the fragrance is encapsulated in the capsule, even in the fragrance that the material itself has a strong fragrance, or may volatilize and move to each part in the package containing the smoking article. It is possible to suppress the fragrance from leaking outside during the retention period.

<Embodiment 3>
FIG. 7 is a diagram illustrating an internal structure of the combustion-type smoking article 1B according to the third embodiment. Here, the difference from the second embodiment will be mainly described. The combustion type smoking article 1B is different from the second embodiment in the structure of the filter portion 3B. In the filter part 3B, a cavity part (cavity part) 8 is formed between the first section 31 located on the connection end part 3a side and the second section 32 located on the suction end part 3b side. And in this cavity part 8, the flavor releasing material 7 which discharge | releases a flavor by being heated is arrange | positioned. The flavor release material 7 is as described in the second embodiment. For example, the flavor release material 7 is obtained by enclosing a fragrance liquid in a heat-breakable capsule. As described above, by arranging the flavor release material 7 in the cavity portion 8 formed at the subsequent stage of the first section 31, the heat of the high-temperature smoke flowing into the filter portion 3B from the combustion portion 2 side is also used. The release of flavor from the flavor release material 7 can be promoted.

<Embodiment 4>
FIG. 8 is a diagram illustrating a cylindrical tobacco sheet 21A according to the fourth embodiment. In the cylindrical tobacco sheet 21A according to the fourth embodiment, a plurality of through-holes 211 penetrating the cylindrical tobacco sheet 21A in the thickness direction are arranged. In FIG. 8, illustration of the wrapping paper 22 covering the outer periphery of the cylindrical tobacco sheet 21A is omitted. In the example illustrated in FIG. 8, the rectangular through holes 211 are arranged at regular intervals in the circumferential direction and the axial direction of the cylindrical tobacco sheet 21 </ b> A, but the shape, arrangement pattern, number, and the like of the through holes 211 are not particularly limited.

Since the cylindrical tobacco sheet 21A according to the present embodiment includes the through-hole 211 as described above, the surface area is increased compared to the case where the through-hole 211 is not provided, which is sufficient for the leaf tobacco raw material during combustion. Oxygen (air) can be supplied. Therefore, the cylindrical tobacco sheet 21A is more easily burned during smoking. As a result, the combustion temperature of the cylindrical tobacco sheet 21A is further increased, and the combustion speed is also increased. Thereby, the disappearance of the cylindrical tobacco sheet 21A during smoking can be made even more difficult to occur.

In the present embodiment, the plurality of through holes 211 are evenly arranged in the planar direction of the cylindrical tobacco sheet 21A. Thereby, it can suppress that the ease of burning varies greatly in the plane direction of 21 A of cylindrical tobacco sheets. As a result, there is an advantage that variations in the combustion temperature and the combustion speed are less likely to occur for each region where the cylindrical tobacco sheet 21A burns. In addition, since the plurality of through holes 211 are evenly arranged in the cylindrical tobacco sheet 21A in the present embodiment, the thermal energy generated by the combustion of the cylindrical tobacco sheet 21A during smoking is difficult to diffuse to the surrounding area. There is also an advantage of becoming. This makes it more difficult for the cylindrical tobacco sheet 21A to disappear during smoking.

Moreover, the cylindrical tobacco sheet 21A in the present embodiment can further increase the combustion temperature as described above by forming the through hole 211. Therefore, like the filter part 3A (Embodiment 2) shown in FIG. 6 and the filter part 3B (Embodiment 3) shown in FIG. 7, a filter part provided with a flavor release material 7 in which a fragrance is sealed in a heat-breakable capsule is provided. It is suitable when applied to a combustion-type smoking article provided. Thus, the release of the fragrance | flavor discharged | emitted from the flavor releasing material 7 by applying the cylindrical tobacco sheet | seat 21A provided with the through-hole 211 to the filter part provided with the flavor releasing material 7 which enclosed the fragrance | flavor in the heat crushable capsule. Efficiency can be improved.

Here, the effect of the presence or absence of through holes in the cylindrical tobacco sheet on the combustion rate was tested. FIG. 9 is a diagram showing a measurement result of natural combustion time in a cylindrical tobacco sheet. The tobacco sheet was produced by the following procedure. That is, the dried leaf tobacco raw material was roughly crushed and subjected to water stirring, and then separated into a water extract and an insoluble tobacco residue. Then, pulp was added to the insoluble tobacco residue, fiberized with a refiner, and then the concentrated aqueous extract concentrated by drying under reduced pressure was added to the paper sheet and dried to prepare a tobacco sheet. A cigarette sheet having a size of 30 mm in length and 60 mm in width was produced by the above procedure, and a plurality of through holes having a circular cross section were formed at regular intervals (see FIG. 10 described later). And the combustion part was produced by inserting the cylindrical tobacco sheet which rounded the tobacco sheet | seat and shape | molded in the hollow cylindrical shape inside the wrapping paper rounded cylindrically. In addition, the wrapping paper used what extracted the tobacco cut from the commercially available cigarette. The length of the burning part was 60 mm in total length and 7.8 mm in diameter. Further, the cylindrical tobacco sheet and the wrapping paper were brought into close contact with each other and were not glued. And the combustion type smoking article was produced by connecting said combustion part to the filter part prepared separately through chip paper. In addition, the filter part diverted the commercially available cigarette filter as it is.

In Examples A to J shown in FIG. 9, the cross-sectional area and pitch (center distance) of the through holes formed in the tobacco sheet are changed. FIG. 10 is a view for explaining an aspect of the through holes arranged in the tobacco sheet according to the example. In Examples A to E, the diameter φ of the through hole was 1 mm, and in Examples F to J, the diameter φ of the through hole was 2 mm. In Examples A and F, the vertical pitch and the horizontal pitch of the through holes were both 10 mm, and a total of 18 through holes, 3 in the vertical direction and 6 in the horizontal direction, were arranged in a grid. In Examples B and G, the vertical pitch of the through holes was 10 mm, the horizontal pitch was 5 mm, and three through holes in the vertical direction and 12 in the horizontal direction were arranged in a grid. In Examples C and H, the vertical pitch and the horizontal pitch of the through holes were both 5 mm, and a total of 72 through holes, 6 in the vertical direction and 12 in the horizontal direction, were arranged in a grid. In Examples D and I, the vertical pitch of the through holes was 3.3 mm, the horizontal pitch was 5 mm, and a total of 108 through holes, 9 in the vertical direction and 12 in the horizontal direction, were arranged in a grid. In Examples E and J, the vertical pitch of the through holes was 3.3 mm, the horizontal pitch was 4 mm, and a total of 135 through holes, 9 in the vertical direction and 15 in the horizontal direction, were arranged in a grid. In the comparative example shown in FIG. 9, a combustion-type smoking article is produced using a tobacco sheet that does not have through holes, and other specifications are the same as those in Examples A to J.

Three samples were prepared for each of Examples A to J and Comparative Examples described above, and the natural combustion time was measured under the following conditions. The natural combustion time is measured at room temperature of 22 ° C, relative humidity of 60%, and wind speed of 0.2m / second. After each sample is ignited, it is 3mm away from the root of the combustion part (connection end with the filter part). The time required for spontaneous combustion to the specified position was measured.

FIG. 11 is a graph showing the measurement results of the natural combustion time of the example. As shown in FIG. 11, it was found that as the number of through holes formed in the tobacco sheet increases, the natural combustion time is shortened. Moreover, under the same number of holes, it was found that the natural combustion time is shortened by increasing the cross-sectional area per through-hole.

<Embodiment 5>
FIG. 12 is a view for explaining a cylindrical tobacco sheet 21 </ b> B according to the fifth embodiment, and shows a cross section of the combustion unit 2. In the cylindrical tobacco sheet 21B according to the fifth embodiment, an uneven pattern 212 is formed by performing uneven processing on the surface of the tobacco sheet instead of forming the through hole 211. The concavo-convex pattern 212 can be formed using various concavo-convex processing techniques such as embossing and embossing.

According to the cylindrical tobacco sheet 21B in the present embodiment, since the concave / convex pattern 212 is formed on the surface thereof, the surface area is increased compared with the case where the concave / convex pattern 212 is not provided, which is sufficient for the leaf tobacco raw material during combustion. Oxygen (air) can be supplied. Therefore, the combustion temperature of the cylindrical tobacco sheet 21B is further increased, and the combustion speed is also increased. Thereby, the extinction of the cylindrical tobacco sheet 21B during smoking can be made even more difficult to occur.

In addition, as shown in FIG. 12, in this embodiment, the uneven | corrugated pattern 212 is formed only in the inner surface side of the cylindrical tobacco sheet 21B, and the outer surface side is made smooth. That is, in the cylindrical tobacco sheet 21B, the surface facing the wrapping paper 22 is formed as a smooth surface 213, and the uneven pattern 212 is formed only on the other surface, that is, the surface not facing the wrapping paper 22. Thus, the adhesion of the cylindrical tobacco sheet 21B to the wrapping paper 22 can be improved by making the surface facing the wrapping paper 22 out of the surface of the cylindrical tobacco sheet 21B a smooth surface 213. The combustion stability of the combustion part 2 in can be further improved. In the example shown in FIG. 12, the triangular concave / convex pattern 212 is provided on the inner surface side of the cylindrical tobacco sheet 21B, but the concave / convex pattern 212 has various shapes such as a rectangular shape and a semicircular shape. can do. Moreover, the uneven | corrugated pattern 212 may be provided only in the outer surface of the cylindrical tobacco sheet | seat 21B, and may be provided in both surfaces.

Moreover, also in the cylindrical tobacco sheet 21B according to the present embodiment, as in the cylindrical tobacco sheet 21A according to the fourth embodiment, a combustion type including a filter unit including a flavor release material 7 in which a fragrance is sealed in a heat-breakable capsule. It is suitable when applied to a smoking article, and the release efficiency of the fragrance released from the flavor release material 7 can be improved.

<Modification>
In each of the embodiments described above, the combustion part 2 of the combustion-type smoking article is configured by winding the outer periphery of the tobacco sheet formed into a hollow cylindrical shape with the wrapping paper 22, but the shape of the tobacco sheet in the combustion part 2 Is not limited to a hollow cylindrical shape. For example, as shown in FIG. 13, the combustor 2 may be configured by folding a cigarette sheet into a bellows shape and winding the outer periphery of the cigarette sheet in such a folded state with a wrapping paper 22. In addition, the cigarette sheet is not limited to the bellows shape, and may be folded into another shape.

The preferred embodiments of the present invention have been described above, but it is obvious to those skilled in the art that the combustion-type smoking article according to the present invention can be variously changed, improved, combined, and the like.

DESCRIPTION OF SYMBOLS 1 ... Combustion type smoking article 2 ... Combustion part 3 ... Filter part 4 ... Chip paper 5 ... Paper filter 6 ... Cavity part 7 ... Flavor release material 8 ... Acetate Filter 21 ... Cigarette sheet 22 ... Wrapping paper 23 ... Hollow part 31 ... First section 32 ... Second section

Claims

A rod-shaped combustion part with an ignition end formed on the tip side;
A filter part connected to the base end side of the combustion part;
With
The burning part includes a tobacco sheet formed so as to be along the longitudinal direction from the ignition end to the base end side, and a wrapping paper disposed so as to cover at least a part of the tobacco sheet,
Among the filter parts, a heat-resistant filter having heat resistance is disposed at least on the connection end side connected to the combustion part,
Combustion-type smoking article.
The combustion-type smoking article according to claim 1, wherein the heat-resistant filter is constituted by a paper filter.
The filter unit includes a first section on a connection end side connected to the combustion unit, and a second section located at a suction end than the first section,
A heat-resistant filter is disposed in the first section, and an acetate filter is disposed in the second section.
The combustion type smoking article according to claim 1 or 2.
The filter part and the combustion part are integrally wound by chip paper, and the chip paper is stacked twice or more.
The combustion type smoking article according to any one of claims 1 to 3.
The filter part and the combustion part are integrally wound by chip paper, and the chip paper is subjected to uneven processing that makes it difficult to transfer heat to a finger that holds the filter part.
The combustion type smoking article according to any one of claims 1 to 4.
The filter part is provided with a flavor release material that releases a flavor when heated.
The combustion type smoking article according to any one of claims 1 to 5.
The filter unit includes a first section on a connection end side connected to the combustion unit, and a second section located at a suction end than the first section,
The flavor release material is disposed in the first section;
The combustion type smoking article according to claim 6.
The filter part includes a first section on a connection end side connected to the combustion part, and a second section arranged with a hollow part in the rear stage of the first section,
The flavor release material is disposed in the cavity,
The combustion type smoking article according to claim 6.
The combustion type smoking article according to any one of claims 1 to 8, wherein through-holes penetrating in a thickness direction are arranged in the tobacco sheet.
The combustion type smoking article according to any one of claims 1 to 9, wherein an uneven pattern is formed on a surface of the tobacco sheet.
The combustion-type smoking article according to claim 10, wherein a surface of the tobacco sheet facing the wrapping paper is smooth and the uneven pattern is formed on the other surface.