WO2017104079A1

WO2017104079A1 - Smoking product and filter

Info

Publication number: WO2017104079A1
Application number: PCT/JP2015/085538
Authority: WO
Inventors: 謙一板橋; 尚晃浜本
Original assignee: 日本たばこ産業株式会社
Priority date: 2015-12-18
Filing date: 2015-12-18
Publication date: 2017-06-22
Also published as: ES2820830T3; RU2682413C1; KR102134249B1; UA122805C2; KR20180069049A; EP3391758A4; EP3391758B1; MY184683A; JP6554555B2; JPWO2017104079A1; EP3391758A1

Abstract

Provided is a smoking product for which ample adhesive strength can be maintained, both at the time of production and after a prescribed time has passed after production. The smoking product is equipped with: a filter body of circular cylindrical shape; a sheet which forms a tubular shape when one end portion 26 thereof is overlapped by another end portion 27 thereof at the opposite side, thereby wrapping the filter body inside; a first hot-melt adhesive 31 and a first water-based adhesive 33 which are disposed at locations between the filter body and the sheet; and a second hot-melt adhesive 32 and a second water-based adhesive 34 which are disposed at locations between the one end portion 26 and the other end portion 27.

Description

Smoking articles and filters

The present invention relates to a smoking article configured by wrapping a filter body with a sheet and a filter used in the smoking article.

The cigarette filter is usually manufactured in a form in which a filter medium such as cellulose acetate tow is wrapped with a web. In general, those containing adsorbent particles such as activated carbon to remove gas / vapor components of mainstream smoke or those containing flavor reinforcing agent particles to complement the tobacco flavor are generally known. The method of adding the particles is roughly classified into two types. A dalmatian type in which particles are dispersed in a filter medium such as cellulose acetate tow and a cavity part are created between the filter medium filters, and the particles are added to the cavity part. Cavity type is known.

There are many examples of adding additives to the cavity filter. In Japanese Patent Publication No. 2005-525795, spherical activated carbon as an adsorbent is added to the cavity portion in order to improve the filling rate of activated carbon and to prevent contamination of machinery. Examples of adding flavor enhancers include the following. In Japanese translations of PCT publication No. 2010-52162, flavor-containing cellulose particles are added to the cavity part, and in Japanese translations of PCT publication No. 2007-520204, breakable capsules are added to the cavity part.

US Pat. No. 6,537,186 shows a method for manufacturing a cavity filter. Japanese Patent Application Laid-Open No. 2008-48734 discloses a method of gluing at the time of manufacturing a continuous product of the tobacco processing industry, and Japanese Patent No. 4955866 describes a method of applying an adhesive in the form of a coated paper tape. .

JP 2005-525795 Gazette Japanese translation of PCT publication 2010-52162 Special table 2007-520204 US Pat. No. 6,537,186 JP 2008-48734 A Japanese Patent No. 4955866

There is a demand for a smoking article that is not only properly bonded at the time of manufacture but also maintains a sufficient bond strength after a predetermined time has elapsed.

A smoking article according to one embodiment of the present invention includes a cylindrical filter body and a cylindrical shape in which the other end opposite to the one end overlaps to form a cylindrical shape, and the filter body is disposed inside. A wrapping sheet, a first hot melt adhesive and a first aqueous adhesive provided at a position between the filter body and the sheet, and a position between the one end and the other end; A second hot-melt adhesive and a second aqueous adhesive provided.

According to the present invention, it is possible to provide a smoking article in which sufficient adhesive strength is maintained at the time of manufacture and when a predetermined time has elapsed after manufacture.

FIG. 1 is a cross-sectional view along the longitudinal direction of the cigarette according to the first embodiment. 2 is a cross-sectional view of the cigarette shown in FIG. 1 taken along line F2-F2. FIG. 3 is a table showing the conditions of the cigarettes of the example and the comparative example. FIG. 4 is a cross-sectional view in a direction intersecting with the longitudinal direction of the cigarette of the comparative example shown in FIG. FIG. 5 is a cross-sectional view regarding the direction intersecting the longitudinal direction of the cigarette of the second embodiment. FIG. 6 is a cross-sectional view regarding the direction intersecting the longitudinal direction of the cigarette of the third embodiment.

[First Embodiment]
Hereinafter, with reference to FIG. 1, FIG. 2, 1st Embodiment of the cigarette which is an example of a smoking article is described. The smoking article includes a smoking tool that sucks the flavor of cigarettes by cigarette, electronic device heating or carbon heat source, a non-heated smoking tool that sucks the flavor of cigarettes, and the like.

As shown in FIG. 1, the cigarette 11 has a cylindrical tobacco portion 12, a cylindrical filter portion 13 provided adjacent to the tobacco portion 12, and a cylindrical shape covering the tobacco portion 12 and the filter portion 13. Chip paper 14. The end portion of the filter portion 13 constitutes a suction mouth 13A, and the suction mouth 13A is positioned in the mouth of the smoker when it is held by the smoker.

The cigarette part 12 is formed by wrapping a cigarette 16 around a cut leaf 15 (cigarette).

The filter part 13 (filter) is provided separately from the first filter body 21 (filter body) located on the suction port 13A side and the first filter body 21 in the direction of the central axis C, and is located on the tobacco part 12 side. A filter body 22, a cylindrical molding paper 23 (sheet) covering the first filter body 21 and the second filter body 22, and a cavity 24 (cavity) provided between the first filter body 21 and the second filter body 22 ), Granules 25 accommodated in the cavity 24, and a plurality of openings (ventilation holes) 36 for taking in the chip paper 14 and outside air.

<Forming paper 23 (sheet) is rectangular in a state where it is not bonded with an adhesive. As shown in FIG. 2, the molding paper 23 has one end portion 26 and the other end portion 27 on the opposite side. The forming paper 23 is bonded to the one end portion 26 so that the other end portion 27 is overlapped to form a cylindrical shape, and the first filter main body 21 and the second filter main body 22 are wrapped inside thereof. When the forming paper 23 has a cylindrical shape, one end portion 26 is disposed inside the other end portion 27. Hereinafter, the position where the other end portion 27 overlaps the one end portion 26 is referred to as an overlap portion 29.

The formed paper 23 is formed as a transparent paper and a transparent film. More specifically, the molding paper 23 is made of highly transparent paper such as glassine paper or paraffin paper, a cellophane film made of wood pulp, or polypropylene (PP), polyethylene (PE) polymethyl methacrylate ( PMMA), polystyrene (PS), polyethylene terephthalate (PET) and other plastic transparent films. Further, the molding paper 23 may be formed of a general opaque paper. The molding paper 23 may be air permeable or may not be air permeable.

FIG. 2 is a cross-sectional view taken along the line F2-F2 in FIG. 1 (chip paper is omitted in FIG. 2). The filter unit 13 includes a first hot melt adhesive 31 provided at a position between the first filter body 21 and the molding paper 23 (and a position between the second filter body 22 and the molding paper 23), and a molding. Between the second hot melt adhesive 32 provided at a position (overlap portion 29) between one end portion 26 and the other end portion 27 of the paper 23, and between the first filter body 21 and the molding paper 23. The position between the first aqueous adhesive 33 provided at the position (and the position between the second filter main body 22 and the molding paper 23) and the one end portion 26 and the other end portion 27 (overlap portion). And a second aqueous adhesive 34 provided in 29).

In the present embodiment, as shown in FIG. 2, the first aqueous adhesive 33 and the second aqueous adhesive 34 are continuous and integrally formed. In other words, the water-based adhesive is positioned between the first filter body 21 (second filter body 22) and the molding paper 23, and between the one end portion 26 and the other end portion 27 (overlap). Part 29).

As the granules 25 accommodated in the cavity 24, adsorbent particles (activated carbon or the like) that partially adsorb and remove tobacco smoke components and flavor reinforcing agent particles can be used. The cavity 24 may be filled with both adsorbent particles and flavor reinforcing agent particles.

The first filter body 21 and the second filter body 22 are formed in a cylindrical shape by winding the periphery of a fibrous filler 37 with a web 35. The first filter body 21 and the second filter body 22 can be formed by various types of fillers 37. In the present embodiment, these are constituted by, for example, a filler 37 of a cellulose semi-synthetic fiber such as cellulose acetate, but the filler 37 is not limited to this. Examples of the filler 37 include plant fibers such as cotton, hemp, manila hemp, palm, and rush, animal fibers such as wool and cashmere, cellulosic regenerated fibers such as rayon, and synthetic fibers such as nylon, polyester, acrylic, polyethylene, and polypropylene. Or what combined them can be used. As a component of the 1st filter main body 21 and the 2nd filter main body 22, in addition to the filler which consists of said cellulose acetate fiber, you may contain the granular material of adsorbent particle | grains and flavor reinforcement agent particle | grains. The first filter body 21 and the second filter body 22 may have a multi-segment structure in which two or more different types of segments are connected in the axial direction. At that time, each segment is wound around by the web 35 and the position in the first filter body 21 and the second filter body 22 is fixed. In each segment, each filler 37 may be wound with a winding material for a segment, or a non-wrap filter as shown in FIG. 15 of Japanese Patent No. 4262247 may be used.

Further, at least one of a plasticizer and a binder may be added to the first filter body 21 and the second filter body 22 in order to make the filter have a desired hardness. The kind of plasticizer to be used is not limited. For example, as a plasticizer, triethyl citrate, acetyl triethyl citrate, acetyl tributyl citrate, dibutyl tartrate, ethyl phthalyl ethyl glycolate, methyl phthalyl ethyl glycolate, triacetin, triethyl phosphate, triphenyl phosphate, tripropionine or A combination of them can be used. The kind of binder to be used is not ask | required. For example, as the binder, HMC, HPMC, PVA, PVAc, PEG, or a combination thereof can be used. In some cases, a plasticizer and a binder may not be used.

Further, the first filter body 21 and the second filter body 22 may include a flavor such as menthol. The flavor adding method is not particularly limited. For example, a string-like substance adsorbing a flavor is disposed in the first filter body 21 and the second filter body 22, or the first filter body 21 and the second filter body 22 are disposed. Alternatively, the first filler body 21 and the second filter body 22 may be made of a material in which a flavor is contained in the filler or a material such as a capsule is fixed.

The type and material of the web 35 used for the first filter body 21 and the second filter body 22 are not limited. As the winding paper 35, a winding paper 35 used for a general cigarette filter can be used. The winding paper 35 may have air permeability or may not have air permeability. The web 35 used for a general product has a basis weight of 20 to 100 g / m ² , a thickness of 30 to 110 μm, and an air permeability of 0 to 32,000 Cholesta unit. As the material of the web 35, paper made of vegetable fiber is generally used, but non-woven fabric using polymer fibers (polypropylene, polyethylene, nylon, etc.) or polymer fibers (cellulose, A film of cellulose acetate, polypropylene, polyethylene, nylon, polylactic acid, etc.) may be used, or a metal foil such as an aluminum foil may be used.

The material of the chip paper 14 does not matter. Generally, paper made of vegetable fibers is used for the chip paper 14, but non-woven fabric using polymer fibers (polypropylene, polyethylene, nylon, etc.) or polymer fibers (cellulose, cellulose acetate). , Polypropylene, polyethylene, nylon, polylactic acid, etc.) film or a metal foil such as aluminum foil may be used. The chip paper 14 may be transparent or opaque. Chip paper 14 used for general products is a paper having a basis weight of 35 to 56 g / m ² and a thickness of 35 to 45 μm, and has smoothness to facilitate printing of a brand logo or the like on the surface. It is possible to increase the opacity by blending a filler 37 such as titanium dioxide or calcium carbonate so that the filter portion 13 is not seen through. In order to ensure ventilation from the filter in the cigarette, the chip paper may be pre-perforated or may be perforated by a hoisting machine when the cigarette is wound.

The plurality of apertures 36 are provided radially about the central axis C of the cigarette 11. The plurality of apertures 36 are formed, for example, in a line in the circumferential direction of the cigarette 11. A total of, for example, 10 to 40 opening portions 36 are formed.

Then, the manufacturing process of the cigarette 11 of this embodiment is demonstrated. First, the base filter part used as the 1st filter main body 21 and the 2nd filter main body 22 is manufactured with a general filter manufacturing apparatus. The manufactured base filter portion is put into a combiner and then cut into a length corresponding to two cigarettes, and the cut base filter main body 21 and filter main body 22 are alternately arranged. The aligned filter is provided with a cavity 24 having a desired length by a drum or the like. The forming paper 23 is intermittently sent to the continuous body of the filter body 21 and the filter body 22 provided with the cavity 24. At this time, the first hot melt adhesive 31 is applied in advance from the first nozzle to the inner surface of the molding paper 23, and at the same time as joining the continuous body, the bonding is started. The fed forming paper 23 is formed into a “U” shape with its upper part opened, and is formed so as to wrap around a continuous body of the filter body 21, the filter body 22 and the cavity 24. After that, the granules 25 are fed from above the forming paper 23 released into the U time shape.

On the line through which the molding paper 23 is fed, a second nozzle for supplying the second hot melt adhesive 32 and an aqueous adhesive (the integrated first aqueous adhesive 33 and the second aqueous adhesive 34) are provided. A wide third nozzle to be supplied is arranged, and an adhesive is applied to the inner surface of the molding paper 23. Thereafter, the U-shaped molding paper 23 is rolled into a cylindrical shape. At that time, the second hot-melt adhesive 32 and the aqueous adhesive (the integrated first aqueous adhesive 33 and second aqueous adhesive 34). Will start bonding. As a result, the first hot melt adhesive 31 and the first aqueous adhesive 33 are disposed at a position between the first filter body 21 and the molding paper 23. Similarly, a first hot melt adhesive 31 and a first aqueous adhesive 33 are disposed at a position between the second filter body 22 and the molding paper 23. A second hot melt adhesive 32 and a second aqueous adhesive 34 are disposed at a position (overlap portion 29) between one end portion 26 and the other end portion 27 of the forming paper 23. The filter continuum thus created is finally cut to a predetermined length, and a filter portion corresponding to four cigarettes is completed.

The cigarette part 12 (roll) is manufactured using a general cigarette winder prepared separately. And the filter for two cigarettes which cut the filter part formed as mentioned above in half between the two tobacco parts 12 is inserted. In the cigarette winder, the cigarette part 12 and the filter part 13 corresponding to the two cigarettes 11 are collectively rolled up using the chip paper 14, so that the cigarette part 12 and the filter part corresponding to two cigarettes are used. The rod-shaped thing which connected 13 is formed.

Then, the ventilation hole 36 is formed by a CO ₂ laser or the like while the rod-shaped member is traveling at a predetermined speed. And the filter part 13 and the chip | tip paper 14 are cut | disconnected with a cutter in the center position of the filter part 13 of two lengths, and manufacture of the one cigarette 11 is completed. The ventilation opening 36 may be formed by a laser or the like after being cut into one cigarette. Further, the ventilation opening 36 may be secured by the air permeability of the chip paper 14, the forming paper 23, and the web 35, and in that case, a laser or the like is not used. Thus, the method of opening is determined by the cigarette winding machine and the specifications of the cigarette.

[Example]
FIG. 3 shows typical conditions for the cigarette of the example. The cigarette 11 of an Example has the same structure as the said embodiment shown in FIG. 1, FIG. The filter part 13 used for the cigarette 11 was manufactured as follows. A filter including menthol was used as a filter portion to be the first filter body 21 and the second filter body 22. As the winding paper 35, a general winding paper (manufactured by Nippon Paper Papillia Co., Ltd.) having an air permeability of 30000 Cholesta unit and a basis weight of 21 g / m 2 was used. The first filter body 21 and the second filter body 22 have a length of 10 mm in the direction of the central axis C of the cigarette 11. The cavity 24 between the first filter body 21 and the second filter body 22 has a length in the direction of the central axis C of the cigarette 11 of 7 mm. The circumference of the filter unit 13 is 24.2 mm. The length of the filter part is 108 mm, which corresponds to the length of 27 mm of the filter part 13 when the cigarette 11 is manufactured. The first filter body 21 and the second filter body 22 are wound up with a transparent molding paper 23 (P-BD, manufactured by Phutamura Chemical Co., Ltd.) made of a cellophane film.

The inside of the cavity 24 is filled with 20 mg of spearmint leaf granules 25 (manufactured by Takasago International Corporation). Spearmint leaf granules 25 were dried and pulverized, and screened for particles having a diameter of 0.5 to 1.4 mm using a sieve.

Trade name: Daikarac S-1101S manufactured by Daido Kasei Kogyo Co., Ltd. was used as the first hot melt adhesive 31 and the second hot melt adhesive 32. Moreover, the brand name: Ceviane A20753 made from Daicel FineChem Co., Ltd. was used as the first aqueous adhesive 33 and the second aqueous adhesive 34. A water-based adhesive is an adhesive that hardens when water in the adhesive evaporates. The second hot melt adhesive 32 is located between one end portion 26 and the other end portion 27 of the molding paper 23. The first hot melt adhesive 31 is located between the web 35 and the forming paper 23. The first aqueous adhesive 33 and the second aqueous adhesive 34 are provided at a position between the first hot melt adhesive 31 and the second hot melt adhesive 32. The first aqueous adhesive 33 and the second aqueous adhesive 34 are provided so as to protrude from the overlap portion 29, the position between one end portion 26 and the other end portion 27 of the forming paper 23, and the winding paper 35 and between the molding paper 23 and the position.

For each filter 108 mm, the first hot melt adhesive 31 is 10 mg, the second hot melt adhesive 32 is 3 mg, and the first aqueous adhesive 33 and the second aqueous adhesive 34 are both To 3 mg in total. The first aqueous adhesive 33 is continuous with the second aqueous adhesive 34.

[Comparative example]
FIG. 3 shows typical conditions for the filter unit 41 of the comparative example. FIG. 4 shows the structure of the filter unit 41 of the comparative example. The filter portion 41 of the comparative example is the same as the above-described embodiment with respect to other structures such as the type of adhesive used, although the arrangement of the adhesive is different. For this reason, the following description of the filter unit 41 of the comparative example will be mainly focused on the differences from the filter unit 13 of the cigarette 11 of the above embodiment.

The filter portion 41 of the comparative example is positioned so that the aqueous adhesive (second aqueous adhesive 34) does not protrude from the overlap portion 29, and one end portion 26 and the other end portion 27 of the molding paper 23. Between the two.

[Evaluation of adhesive strength]
Subsequently, the adhesive strength (tensile strength) between the filter paper 13 of the cigarette 11 of the above example and the forming paper 23 and the web 35 of the filter part 41 of the comparative example was evaluated. This evaluation was performed by measuring the tensile strength of the adhesive strength of the molding paper 23 with respect to the web 35 of the first filter body 21 after storage for 1 day or 14 days.

The sample for evaluation was created as follows. First, the filter unit 13 is partially cut in parallel with the direction of the central axis C so as to cut out the bonded portion of the web 35 and the formed paper 23. Then, the filler 37 is removed from the first filter body 21 so that only the web 35 is present. As a result, the structure in which the forming paper 23 and the web 35 are bonded with the first hot melt adhesive 31 and the first aqueous adhesive 33 is taken out. The tensile strength of the sample thus formed was measured using a small tabletop testing machine (Shimadzu Corporation, EZ Grapf 5N). At that time, the web 35 is gripped by one arm of the small desktop testing machine, the molding paper 23 is gripped by the other arm of the small desktop testing machine, the sample is pulled with a force of 5 N, and the winding paper 35 and the molding paper 23 are peeled off. The adhesive strength (tensile strength) was measured. The measurement was performed 5 times, and the average value was taken as the measured value.

As a result of the test, in the example, the adhesive strength after 1 day of storage was 0.523 N, while in the comparative example, the adhesive strength after 1 day of storage was 0.166 N. Further, in the examples, the adhesive strength after 14 days of storage was 0.304 N, while in the comparative example, the adhesive strength after 14 days of storage was 0.075 N. As a result of this evaluation, it was confirmed that the example exhibited an adhesive strength superior to that of the comparative example in either case 1 day or 14 days after storage.

According to the first embodiment and the example, the smoking article is formed in a cylindrical shape by overlapping a columnar filter body and one end portion 26 on the opposite side to the other end portion 27. A sheet that wraps the filter body, a first hot-melt adhesive 31 and a first aqueous adhesive 33 provided between the filter body and the sheet, one end 26 and the other end 27. And a second hot-melt adhesive 32 and a second water-based adhesive 34 provided between the two.

The filter has a cylindrical filter body, a sheet that wraps around the filter body on the inside by overlapping the other end portion 27 opposite to the one end portion 26 into a cylindrical shape, The first hot melt adhesive 31 and the first aqueous adhesive 33 provided between the filter body and the sheet, and the first hot melt adhesive 31 provided between the one end portion 26 and the other end portion 27. 2 hot-melt adhesive 32 and a second aqueous adhesive 34.

Generally, hot-melt adhesives are quick-drying, and the drying time of water-based adhesives is longer than the drying time of hot-melt adhesives. According to the configuration described above, in addition to the hot melt adhesive, the aqueous adhesive is positioned between the filter body and the sheet, and between the one end portion 26 and the other end portion 27, Is provided. For this reason, each of the advantages of the two types of adhesives can be utilized, such as making up for the lack of strength of the hot-melt adhesive using a water-based adhesive while ensuring quick drying with the hot-melt adhesive. Thereby, the sheet is not peeled off from the filter body, and the high-quality cigarette 11 can be provided.

The first aqueous adhesive 33 is continuous with the second aqueous adhesive 34. According to this configuration, one continuous aqueous adhesive can be disposed across the position between the filter body and the sheet and the position between the one end portion 26 and the other end portion 27. . For this reason, in the production line of the cigarette 11, the number of nozzles for applying the aqueous adhesive can be reduced, and the production cost can be reduced. Further, both the surface (front surface 26A) constituting one end portion 26 and the end surface 26B of one end portion 26, that is, the corner portion of one end portion 26 are wrapped with the water-based adhesive. Since it can hold | maintain, the adhesive strength between a filter main body and a sheet | seat can be improved compared with the case where it adhere | attaches only on opposing surfaces.

In this case, a cavity 24 is provided inside the sheet adjacent to the filter body. Generally, when the cavity 24 is provided on the inner side of the sheet, the structure of the filter main body is easily displaced with respect to the sheet. According to the above configuration, even if the structure of the filter body is easily displaced with respect to the sheet, the use of two types of adhesives, a hot-melt adhesive and a water-based adhesive, makes it possible to eliminate the gap between the sheet and the filter body. Adhesive strength can be increased, and displacement of the filter body can be prevented.

The smoking article includes a second filter body 22 that is formed in a cylindrical shape and is wrapped inside the sheet so that a cavity 24 is positioned between the filter body, and includes a first hot melt adhesive 31 and a first aqueous adhesive. The agent 33 is provided between the second filter body 22 and the sheet, and the second hot melt adhesive 32 and the second aqueous adhesive 34 are provided between the one end portion 26 and the other end portion 27. Provided in position.

According to this configuration, the second filter main body 22 can also be adhered to the sheet with two types of adhesives in the same manner as the filter main body. Accordingly, the advantages of the two types of adhesives can be utilized, and the adhesive strength of the second filter body 22 can be improved to provide a high-quality smoking article.

The cavity 24 is filled with at least one of adsorbent particles 25 that partially adsorb and remove tobacco smoke components and flavor reinforcing agent particles 25 that carry flavor components. According to this configuration, since a part of the tobacco smoke can be adsorbed to the filter side by the adsorbent particles 25, it is possible to provide a smoking article having a more refined savory taste without miscellaneous taste. Moreover, since the flavor component can be imparted to the cigarette smoke by the flavor reinforcing agent particles 25, the flavor can be refreshed or the flavor can be further deepened. Thereby, a higher quality smoking article with improved flavor can be provided.

The sheet is a film. According to this configuration, even when a film in which an adhesive is difficult to work is employed for the sheet, sufficient adhesive strength can be ensured by using two types of adhesive as in the present embodiment.

¡The filter body includes menthol. The inventors of the present application have found that when the filter main body includes menthol, the menthol vaporized from the filter main body gradually decreases the adhesive strength of the hot-melt adhesive with time. According to the said structure, even when the adhesive force of a hot-melt-type adhesive agent falls under the influence of a menthol, adhesion | attachment with a filter main body and a sheet | seat can be ensured with the adhesive force of a water-system adhesive agent. That is, the hot-melt adhesive can ensure instantaneous adhesion or short-term adhesion, and the water-based adhesive can ensure longer-term adhesion. As a result, both adhesives act in a complementary manner, and as a result, the sheet does not fall off from the filter body for a long period of time immediately after bonding. Thereby, the high-quality cigarette 11 can be provided.

[Second Embodiment]
With reference to FIG. 5, the cigarette which is an example of the smoking article of 2nd Embodiment is demonstrated. The cigarette 11 of the second embodiment is different from that of the first embodiment in that the first aqueous adhesive 33 and the second aqueous adhesive 34 are not continuous, but the other parts are the first embodiment. And in common. For this reason, parts different from the first embodiment will be mainly described, and illustrations or descriptions of parts common to the first embodiment will be omitted.

The filter unit 13 includes a first hot-melt adhesive 31 provided at a position between the web 35 and the molding paper 23, and a position between one end 26 and the other end 27 of the molding paper 23 ( A second hot melt adhesive 32 provided in the overlap portion 29), a first aqueous adhesive 33 provided at a position between the web 35 and the molding paper 23, one end 26 and the other end. 27, a second aqueous adhesive 34 provided at a position (overlap portion 29) between the first and second members 27. In the present embodiment, as shown in FIG. 5, the first aqueous adhesive 33 and the second aqueous adhesive 34 are arranged separately.

The cigarette 11 according to the present embodiment has the following effects. For example, as in the first embodiment, when the first aqueous adhesive 33 and the second aqueous adhesive 34 are continuous, the position between the web 35 and the molding paper 23 and one of the molding papers 23 There is a possibility that the amount of the water-based adhesive is biased between the position (overlap portion 29) between the end portion 26 and the other end portion 27. According to the said structure, since the 1st aqueous adhesive 33 and the 2nd aqueous adhesive 34 are isolate | separated and arrange | positioned, control of the quantity of an aqueous adhesive can be made easy. Thereby, it can prevent that a sheet | seat peels from a filter main body by making the quantity of an aqueous adhesive appropriate, and can provide a high quality cigarette.

[Third Embodiment]
With reference to FIG. 6, the cigarette 11 which is an example of the smoking article of 3rd Embodiment is demonstrated. In the cigarette 11 of the third embodiment, the first hot melt adhesive 31 and the second hot melt adhesive 32 are continuous, and the first aqueous adhesive 33 and the second aqueous adhesive 34 are not continuous. However, the other parts are the same as those in the first embodiment. For this reason, parts different from the first embodiment will be mainly described, and illustrations or descriptions of parts common to the first embodiment will be omitted.

The filter unit 13 includes a first hot-melt adhesive 31 provided at a position between the web 35 and the molding paper 23, and a position between one end 26 and the other end 27 of the molding paper 23 ( A second hot melt adhesive 32 provided in the overlap portion 29), a first aqueous adhesive 33 provided at a position between the web 35 and the molding paper 23, one end 26 and the other end. 27, a second aqueous adhesive 34 provided at a position (overlap portion 29) between the first and second members 27.

In the present embodiment, as shown in FIG. 6, the first hot melt adhesive 31 and the second hot melt adhesive 32 are continuous and integrally formed. In other words, the hot melt adhesive spans the position between the web 35 and the forming paper 23 and the position between the one end portion 26 and the other end portion 27 (overlap portion 29). Provided. On the other hand, the first aqueous adhesive 33 and the second aqueous adhesive 34 are separated.

According to the cigarette 11 of the present embodiment, the first hot melt adhesive 31 is continuous with the second hot melt adhesive 32. For this reason, it is possible to dispose one continuous hot melt adhesive between the filter body and the sheet and between the one end portion 26 and the other end portion 27. For this reason, the number of nozzles for applying the hot melt adhesive in the production line of the cigarette 11 can be reduced, and the production cost can be reduced. Further, both the surface (front surface 26A) constituting one end portion 26 and the end surface 26B of one end portion 26, that is, the corner portion of one end portion 26 are wrapped with a hot melt adhesive. Since it can hold | maintain so that the adhesive strength between a filter main body and a sheet | seat can be improved compared with the case where it only adhere | attaches on opposing surfaces.

The smoking article (cigarette 11) is not limited to the above embodiment, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. That is, in the above-described embodiment, the cavity 24 is provided between the first filter body 21 and the second filter body 22, but a cavity (recess) may be provided in the suction port 13 </ b> A of the filter unit 13. Moreover, the single cigarette 11 can also be realized by appropriately combining the components in the different embodiments described above.

DESCRIPTION OF SYMBOLS 11 ... Cigarette, 12 ... Cigarette part, 13 ... Filter part, 14 ... Chip paper, 15 ... Cut leaf, 16 ... Wrapping paper, 21 ... First filter body, 22 ... Second filter body, 23 ... Molded paper, 24 ... Cavity , 25 ... granules, 26 ... one end, 27 ... the other end, 31 ... first hot melt adhesive, 32 ... second hot melt adhesive, 33 ... first aqueous adhesive, 34 ... first 2 water-based adhesive, 35 ... web, 36 ... aperture, 37 ... filler, 41 ... filter.

Claims

A cylindrical filter body;
A sheet that wraps the filter body on the inside, with the other end on the opposite side of one end overlapping and forming a cylindrical shape;
A first hot melt adhesive and a first aqueous adhesive provided at a position between the filter body and the sheet;
A second hot-melt adhesive and a second aqueous adhesive provided at a position between the one end and the other end;
Smoking article comprising.
The smoking article according to claim 1, wherein the first aqueous adhesive is continuous with the second aqueous adhesive.
The smoking article according to claim 1, wherein the first hot melt adhesive is continuous with the second hot melt adhesive.
The smoking article according to claim 1, wherein a cavity is provided inside the sheet adjacent to the filter body.
A second filter body which is formed in a cylindrical shape and is enclosed inside the sheet so that the cavity is located between the filter body and
The first hot melt adhesive and the first aqueous adhesive are provided between the second filter body and the sheet,
The smoking article according to claim 4, wherein the second hot-melt adhesive and the second aqueous adhesive are provided at a position between the one end and the other end.
6. The smoking article according to claim 5, wherein the cavity is filled with at least one of an adsorbent granule for partially adsorbing and removing a tobacco smoke component and a granule carrying a flavor component.
The smoking article according to claim 1, wherein the sheet is a film.
The smoking article according to claim 1, wherein the filter body includes menthol.
A cylindrical filter body;
A sheet that wraps the filter body on the inside, with the other end on the opposite side of one end overlapping and forming a cylindrical shape;
A first hot melt adhesive and a first aqueous adhesive provided at a position between the filter body and the sheet;
A second hot-melt adhesive and a second aqueous adhesive provided at a position between the one end and the other end;
With a filter.