WO2017068664A1

WO2017068664A1 - Filter for tobacco products

Info

Publication number: WO2017068664A1
Application number: PCT/JP2015/079698
Authority: WO
Inventors: 謙一板橋; 亮平泉; 祐輔永松; 亮治藤田
Original assignee: 日本たばこ産業株式会社
Priority date: 2015-10-21
Filing date: 2015-10-21
Publication date: 2017-04-27
Also published as: MY185472A; JPWO2017068664A1; KR20180064457A; KR102124446B1; JP6627156B2; UA123438C2; RU2687639C1

Abstract

To provide a technique by which a filter (4) for tobacco products, the filter being provided with a capsule (5) for accommodating contents to be supplied into the mouth, for improving suitability for production to a greater extent than in the prior art, is optimized for manufacture to a greater extent than in the prior art. The filter for tobacco products is provided with a mouthpiece end section (S3) formed on a mouthpiece end and a cavity section (S2) in which a contents-accommodating capsule is positioned, the cavity section being provided continuously with the front portion of the mouthpiece end section and not including a filter member. The capsule has a breakable part (55) for releasing the contents accommodated inside the capsule when pressure is applied to the capsule. The capsule is positioned in the cavity section in an orientation that is restricted so that the breakable part faces the mouthpiece end section. A guide part (43a) is formed in the mouthpiece end section, the guide part guiding the contents released from the breakable part to the mouthpiece end.

Description

Tobacco article filter

The present invention relates to a filter for tobacco articles.

For the purpose of resolving discomfort in the mouth during or after smoking, a technique for arranging a capsule containing a liquid in a filter is known. For example, in Patent Document 1, a capsule that contains a liquid and that can be deformed by a force applied by a smoker's finger is embedded in a filter material (plug), and the liquid released by the deformation of the capsule is contained in the filter. A technique is described that enables supply into a smoker's mouth from an opening formed in the end face of the mouthpiece.

International Publication No. 2013/178515 International Publication No. 2014/068295

However, in the technique described in Patent Document 1, since the capsule is embedded in the filter material, it cannot be said that the manufacturing suitability is high. This invention is made in view of such a situation, Comprising: In the filter for tobacco articles provided with the capsule which accommodates the content for supplying in a mouth, the technique which improves manufacture aptitude compared with the former is provided. For the purpose.

In order to solve the above-described problems, a tobacco article filter according to the present invention is housed in a cavity section that is connected to a front stage of a mouth end section formed at a mouth end and does not include a filter material. The capsule is placed with the easy-to-break part that discharges the contents facing the mouth end section, and the introduction part that leads the contents discharged from the easy-to-break part to the mouth end is formed in the mouth end section. did.

More specifically, the cigarette article filter according to the present invention is a mouth end section formed at the mouth end, and a cavity section that is connected to a front stage of the mouth end section and does not include a filter material. A cavity section in which a capsule containing the contents is disposed, and the capsule has an easily breakable portion for releasing the contents contained therein when the capsule is pressed, and the cavity In the section, the capsule is arranged in a posture defined so that the easily breakable portion faces the mouth end section, and the contents discharged from the easily breakable portion are disposed in the mouth end section. An introduction portion is formed to guide the lead to the end of the mouthpiece.

According to the present invention, for example, after smoking, the user (smoker) sandwiches the cavity section of the filter with his / her finger through the chip paper, and crushes the capsule by applying an external force to the capsule arranged in the cavity section. At that time, the easy-to-break portion that discharges the contents contained in the capsule is arranged in a posture that is defined so as to face the mouth end section. Enters the mouth end section. And the content discharged | emitted from the easily breakable part is guide | induced to the mouth end through the introducing | transducing part in a mouth end section, and a content can be supplied in a mouth. Further, according to the filter of the present invention, the cavity section in which the capsule is disposed does not include the filter material. According to this, since it is not necessary to embed the capsule in the filter material, it is possible to improve the manufacturing suitability of the filter as compared with the conventional case.

In the present invention, the capsule may have an outer diameter smaller than the inner diameter of the cavity section. Thereby, the flow path of mainstream smoke can be formed in the outer peripheral side of the capsule in a cavity section. It is easy to manufacture a filter containing a capsule in the cavity section.

Further, in the present invention, the mouth end section has a hollow channel that extends in the axial direction and distributes the content discharged from the easily breakable portion, and the distribution of the content in a region other than the hollow channel. A suction mouth forming member that restricts the suction mouth is disposed, and the introduction portion may be formed by the hollow channel of the suction mouth forming member. According to such a configuration, the contents discharged from the easily breakable portion of the capsule can be suitably guided to the mouth end through the hollow channel of the mouth forming member.

Further, in the cavity section, the psel may be supported by a support so that the easily breakable portion is disposed to face the hollow channel. According to this, the capsule in the cavity section can be easily supported in a desired posture.

Further, in the present invention, a deviation between the center position of the easily breakable portion and the center position of the hollow channel in the capsule may be 1 mm or less. According to this, the content discharged from the easily breakable part of the capsule can be efficiently flowed into the hollow channel, and a sufficient amount of the content can be supplied into the mouth through the hollow channel.

Further, in the present invention, the mouthpiece forming member may have a diameter of the hollow channel of 1 mm or more. By comprising in this way, the content discharge | released from the easily breakable part of the capsule can be easily flowed into the hollow channel, and a sufficient amount of the content can be supplied into the mouth through the hollow channel.

In the present invention, the diameter of the capsule may be 50% or more of the inner diameter of the cavity section. The diameter of the capsule may be 85% or more of the inner diameter of the cavity section. According to this, the deviation | shift amount of the center position of the easily breakable part in the capsule arrange | positioned at a cavity section and the center position of a hollow channel can be made small, and the contents can be smoothly supplied in a mouth.

In the present invention, the suction port forming member may have a length of the hollow channel of 10 mm or less. By defining the length of the hollow channel in this way, a sufficient amount of contents can be introduced into the mouth through the hollow channel, and until the contents are supplied into the mouth after the capsule is crushed The required time can be made relatively short.

In the present invention, the mouthpiece forming member may be composed of a filter material in which the hollow channel is formed to penetrate in the axial direction.

In the present invention, the filter material may contain 19% by mass or more of a plasticizer based on the mass of fibers forming the filter material. According to this, the fluff of the fiber in the inner peripheral surface of the hollow channel in the manufactured filter material can be reduced, and the contents can be smoothly supplied into the mouth through the hollow channel.

Further, in the present invention, the filter material is added with a plasticizer, and a relatively larger amount of plasticizer is added to the inner peripheral region facing the hollow channel than the other regions in the filter material. May be. As described above, by locally increasing the amount of the plasticizer added to the inner peripheral region facing the hollow channel, it is possible to more effectively suppress fiber fluffing on the inner peripheral surface of the hollow channel. .

In the present invention, the axial length of the capsule may be shorter than the axial length of the cavity section. This facilitates the manufacture of a filter in which capsules are arranged in the cavity section. In that case, the difference between the axial length of the capsule and the axial length of the cavity section is preferably 5 mm or less. As a result, the contents discharged from the capsule can smoothly flow into the hollow channel of the mouthpiece forming member. Further, in the present invention, the filling amount of the content in the capsule may be 50 mg or more. It is considered that a sufficient amount of the contents can be supplied into the mouth by securing the amount of the contents accommodated in the capsule to this extent.

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

According to the present invention, it is possible to provide a technique for improving the manufacturing aptitude as compared with the conventional filter for tobacco articles including a capsule for storing contents to be supplied into the mouth.

FIG. 1 is a perspective view of a cigarette according to the first embodiment. FIG. 2 is a diagram illustrating a schematic structure of a cigarette according to the first embodiment. FIG. 3 is a diagram illustrating the capsule according to the first embodiment. FIG. 4 is a diagram illustrating the filter according to the first embodiment. FIG. 5 is a diagram illustrating details of each LOT according to the first embodiment. FIG. 6 is a diagram illustrating a cigarette according to the second embodiment. FIG. 7 is a diagram illustrating details of each LOT according to the second embodiment. FIG. 8 is a diagram illustrating details of the

LOTs

7 and 8 according to the second embodiment. FIG. 9 is a diagram illustrating a schematic structure of a cigarette according to the second embodiment. FIG. 10 shows a cross section of the cavity section of the filter according to the second embodiment. FIG. 11 is a diagram illustrating a modification of the support according to the second embodiment. FIG. 12 is a view showing a modification of the support according to the second embodiment. FIG. 13 is a diagram illustrating a schematic structure of a cigarette according to the third embodiment.

Here, an embodiment of a cigarette filter according to the present invention will be described with reference to 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 a perspective view of a cigarette 1 according to the first embodiment. FIG. 2 is a diagram illustrating a schematic structure of the cigarette 1 according to the first embodiment. FIG. 2 is a cross-sectional view showing a part of the cigarette 1.

The cigarette 1 has a cigarette winding part 2 and a filter 4 connected to one end of the cigarette winding part 2 via a chip paper 3. The cigarette winding part 2 is obtained by winding a cigarette 21 with a wrapping paper 22 and is formed in a columnar shape (bar shape).

The filter 4 is wound by the chip paper 3 and is connected to the rear end side of the cigarette winding part 2 through the chip paper 3. The chip paper 3 connects (connects) the end portion of the cigarette winding portion 2 and the filter 4 by winding them together. Hereinafter, in the longitudinal direction (axial direction) of the cigarette winding part 2, an end part connected to the filter 4 is referred to as a “rear end”, and an end part on the opposite side is referred to as a “front end”. In the longitudinal direction (axial direction) of the filter 4, the end connected to the cigarette winding unit 2 is referred to as “front end”, and the end opposite to the front end is referred to as “rear end”. The rear end of the filter 4 forms a “mouth end” that can be given to the smoker during smoking. Further, a cross section along the longitudinal direction (axial direction) of the cigarette 1 (cigarette winding part 2, filter 4) is defined as a “longitudinal section”, and a cross section in a direction perpendicular to the longitudinal direction is defined as a “cross section”.

Inside the filter 4, a filter section S1, a cavity section S2, and a mouth end section S3 are arranged in this order from the front end side. The filter section S1 is provided with a filter material 41 in which, for example, a cellulose acetate fiber formed into a columnar shape is wound up by a winding paper (plug wrap). However, the filter material 41 is not limited to a fiber bundle of cellulose acetate, and various materials can be employed. For example, the filter material 41 may contain particles such as activated carbon and fragrance inside the fiber.

The mouth end section S3 is provided with a center hole filter material (hereinafter referred to as “CH filter material”) 43 which is formed in a cylindrical shape and has a center hole (CH) 43a formed in the axial direction. Yes. The center hole 43a is a through passage passing through the center of the CH filter material 43, and corresponds to the hollow channel and the introduction portion according to the present invention. The CH filter material 43 is formed, for example, by winding a fiber bundle of cellulose acetate with a winding paper. In the present embodiment, the CH filter material 43 corresponds to the mouthpiece forming member according to the present invention.

The filter material 41 and the CH filter material 43 are arranged apart in the axial direction. In the cavity section S2, a cavity 42 is formed as a cavity sandwiched between the filter material 41 and the CH filter material 43. The cavity 42 in the cavity section S2 is provided with a capsule 5 in which contents are enclosed. The filter material 41, the capsule 5, and the CH filter material 43 are integrally wound by a forming paper 44. The cavity section S2 is connected to the front stage of the mouth end section S3, and is formed as a section that does not include a filter material. The capsule 5 has an outer diameter smaller than the inner diameter of the cavity section S2. Thereby, it is comprised so that the flow path of mainstream smoke may be formed in the outer peripheral side of the capsule 5 in cavity section S2.

FIG. 3 is a diagram showing the capsule 5. The capsule 5 includes a substantially cylindrical capsule body 51, and the capsule body 51 is elastically deformable. The capsule body 51 is a bottomed cylindrical body including a front wall 53 and a peripheral wall 54 and has an open end 52. The front wall 53 closes one of the peripheral walls 54. The capsule body 51 is obtained, for example, by injection molding a synthetic resin. Hereinafter, the axial direction of the capsule body 51 having a cylindrical shape is referred to as the axial direction of the capsule 5.

The capsule 5 has a size that can be placed in a cylindrical cavity 42 secured in the cavity section S2. The filter 4 according to the present embodiment has a length along the axial direction of the capsule 5 arranged in the cavity section S2 (cavity 42) (hereinafter also referred to as “axial length”) in the axial direction of the cavity section S2. Is shorter than the length along the length (axial length). In that case, the difference between the axial length of the cavity section S2 (cavity 42) and the axial length of the capsule 5 is preferably 5 mm or less. Further, the outer diameter of the capsule 5 is set to a size smaller by several hundred μm to several mm than the inner diameter of the cavity section S2. The inner diameter of the cavity section S <b> 2 here means the inner diameter of the molding paper 44 covering the outer periphery of the cavity 42 (the outer diameter of the filter material 41 and the CH filter material 43). Since the capsule 5 has the above-described size with respect to the cavity 42, a mainstream smoke flow path can be formed on the outer peripheral side of the capsule 5 in the cavity section S2. Furthermore, by making the outer diameter of the capsule 5 smaller than the inner diameter of the cavity section S2, it is easy to manufacture the filter 4 containing the capsule 5 in the cavity 42, and the user can easily make the capsule 5 in the filter 4 In addition, the position and orientation of the capsule 5 in the cavity 42 are also stabilized.

The details of the capsule 5 will be described. At the center of the front wall 53 of the capsule body 51, an easily breakable portion 55 having a thinner thickness than other portions is formed. In the present embodiment, the easily breakable portion 55 has a circular shape, and the thickness thereof is, for example, not less than 0.1 mm and less than 0.2 mm. Further, a rod-shaped protrusion 56 is formed at the center of the easily breakable portion 55, and this protrusion 56 protrudes toward the outside of the capsule body 51. The diameter of the protrusion 56 is, for example, about 0.5 to 0.6 mm, and the protrusion length is, for example, about 0.8 mm.

The open end 52 of the capsule body 51 is liquid-tightly closed by a seal member 57. The seal member 57 is a flexible sheet and is adhered to the end surface of the peripheral wall 54 without hindering the elastic deformation of the capsule body 51. The seal member 57 is bonded to the peripheral wall 54 by heat sealing, for example. However, the shape of the capsule body 51, the bonding method of the capsule body 51 and the seal member 57, and the like can be changed as appropriate.

The capsule body 51 and the seal member 57 described above form a capsule 5, and such a capsule 5 accommodates contents therein. In the present embodiment, an aqueous solution in which an additive such as a fragrance is dissolved in distilled water (hereinafter referred to as “fragrance liquid”) is employed as the contents contained in the capsule 5, but is not limited thereto. . The contents stored in the capsule 5 may be, for example, water, edible oil, edible seasoning, edible fragrance, or oral refreshing agent alone or in a mixture. The state of the contents may be liquid, gas, or solid. When the content is a solid, it can be suspended and dispersed in a liquid after being processed into powder.

In the present embodiment, the capsule 5 is disposed in the cavity 42 in a posture defined so that the easily breakable portion 55 faces the front end surface of the CH filter material 43 disposed in the mouth end section S3. More specifically, the capsule 5 is disposed in the cavity 42 with the easily breakable portion 55 facing the center hole 43 a of the CH filter material 43.

According to the cigarette 1 configured as described above, for example, after smoking, the user (smoker) sandwiches the cavity section S2 of the filter 4 with his / her finger through the tip paper 3, and the capsule disposed in the cavity section S2 An external force can be applied to 5 from the diameter direction of the capsule 5. Such an external force accompanies elastic deformation of the capsule body 51 and crushes the capsule 5. As a result, the internal pressure of the capsule 5 increases.

Here, the increase in the internal pressure of the capsule 5 causes the front wall 53 to bulge outward, while elastically deforming the peripheral wall 54 so as to expand toward the outer peripheral side. Such elastic deformation pulls the easily breakable portion 55 radially outward with respect to the protrusion 56. Therefore, the specific part adjacent to the root of the protrusion 56 in the easily breakable part 55 is particularly extended, and the thickness of this specific part is greatly reduced. As a result, the easily breakable part 55 is first broken. In this case, the protrusion 56 serves as a trigger when the easily breakable portion 55 breaks, and facilitates the breakage of the easily breakable portion 55 as a thin-walled region, while determining the break position of the easily breakable portion 55. That is, when the capsule 5 is crushed, first, the fragrance liquid accommodated in the capsule 5 is ejected toward the front of the front wall 53 from the projection 56 positioned at the center of the easily breakable portion 55.

Once the easy-to-break part 55 in the capsule 5 breaks, the internal pressure of the capsule 5 rapidly decreases, so that the user can sense the destruction of the capsule 5, that is, the release of the fragrance liquid through the finger. If the user keeps crushing the capsule 5 after the breakable portion 55 is broken, the fragrance liquid in the capsule body 51 scatters from the breakable portion 55 toward the center hole 43a of the CH filter material 43.

The filter 4 according to the present embodiment is adjusted so that the deviation between the center position of the easily breakable portion 55 in the capsule 5 and the center position of the center hole 43a in the CH filter material 43 is 1 mm or less. The fragrance liquid released by scattering from the easily breakable portion 55 of the capsule 5 flows into the center hole 43 a from the front end side of the CH filter material 43. And the fragrance | flavor liquid which flowed into the center hole 43a is introduce | transduced in a user's mouth from a mouth end through the center hole 43a. The user can eliminate discomfort in the mouth by including the fragrance liquid in the mouth during or after smoking. Note that, in the cross section of the CH filter material 43, the region excluding the hollow center hole 43a is occupied by the filter fibers and restricts the distribution of the fragrance liquid released from the capsule 5.

Further, according to the filter 4 in the present embodiment, the filter material (filter material) is not included in the cavity section S2 in which the capsule 5 is disposed. According to this, since it is not necessary to embed the capsule 5 in the filter material in the manufacturing process of the filter 4, there is an advantage that the manufacturing suitability of the filter 4 is very excellent. In addition, in the cigarette 1 in this embodiment, the timing which discharge | releases an internal perfume liquid from the capsule 5 of the filter 4 is arbitrary. The user applies a pressing force to the capsule 5 at the appropriate timing during smoking, after smoking, or before smoking, and crushes the capsule 5 to squeeze the fragrance liquid from the easily breakable portion 55 to the center hole 43a. The fragrance liquid can be contained in the mouth through the center hole 43a.

Next, in the filter 4 of the present embodiment, when the capsule 5 disposed in the cavity section S2 (cavity 42) is crushed, the fragrance liquid scattered from the easily breakable portion 55 is sufficiently introduced into the oral cavity. Various advantageous parameters will be described. First, the capsule 5 of the present embodiment contains a perfume liquid of 50 mg or more. By securing this amount of the fragrance liquid filled in the capsule 5, the fragrance liquid released from the easily breakable portion 55 of the capsule 5 can be sufficiently supplied into the oral cavity.

The diameter of the center hole 43a (hollow channel) of the CH filter material 43 is preferably 1 mm or more. If the diameter of the center hole 43a is too small, the fragrance liquid released from the easily breakable portion 55 of the capsule 5 may become difficult to circulate through the center hole 43a, and the center can be smoothly secured by securing the diameter of 1 mm or more. The fragrance liquid easily flows through the hole 43a.

If the length of the center hole 43a (hollow channel) of the CH filter material 43 is too long, the time required for the fragrance liquid flowing in from the front end of the center hole 43a to reach the suction end becomes excessively long. As the space volume of the hole 43a increases, the fragrance liquid stays in the center hole 43a, and the amount of the fragrance liquid introduced into the mouth may be insufficient. Therefore, the length of the center hole 43a (hollow channel) of the CH filter material 43 is preferably 10 mm or less. By defining the length of the center hole 43a (hollow channel) in this way, it becomes easy to sufficiently supply the fragrance liquid into the mouth through the center hole 43a, and the fragrance liquid is put into the mouth after the capsule 5 is crushed. The time required for supply can also be made relatively short.

In addition, it is preferable that a deviation between the center position of the easily breakable portion 55 in the capsule 5 (the position where the protrusion 36 is formed) and the center position of the center hole 43a (hollow channel) of the CH filter material 43 is 1 mm or less. The center position of the easily breakable portion 55 here means the center position of the easily breakable portion 55 in the cross section of the filter 4. Similarly, the center position of the center hole 43 a (hollow channel) means the center position of the center hole 43 a in the cross section of the filter 4. Thus, in the cross section of the filter 4, the shift amount between the center position of the easily breakable portion 55 in the capsule 5 and the center position of the center hole 43 a in the CH filter material 43 (hereinafter referred to as “center shift amount”) is reduced. Thus, more perfume liquid scattered from the broken easily breakable portion 55 can be caused to flow into the center hole 43a.

By the way, in this embodiment, since the axis center of the capsule 5 and the center of the easily breakable portion 55 are coaxial, the diameter of the capsule 5 (capsule body 51) is equal to the inner diameter of the cavity section S2 (cavity 42). The center position of the easily breakable portion 55 and the center position of the center hole 43 a substantially coincide with each other in the cross section of the filter 4. On the other hand, when the ratio of the diameter of the capsule 5 to the inner diameter of the cavity section S2 (cavity 42) (hereinafter also referred to as “capsule diameter ratio”) is small, the center position of the easily breakable portion 55 is the center hole 43a. As the capsule diameter ratio decreases, the above-mentioned center shift amount increases. Therefore, it can be said that it is desirable to set the capsule diameter ratio to be large from the viewpoint of suppressing the center deviation amount between the easily breakable portion 55 in the capsule 5 and the center hole 43a in the CH filter material 43 from increasing.

Therefore, in the present embodiment, it is preferable that the diameter of the capsule 5 is 50% or more of the inner diameter of the cavity section S2 (cavity 42). By setting the diameter of the capsule 5 in this way, the center hole 43a in the CH filter material 43 and the front wall 53 of the capsule 5 can overlap each other in the cross section of the filter 4, and the user pushes the capsule 5 The fragrance liquid released from the capsule 5 when crushed becomes easy to flow into the center hole 43 a in the CH filter material 43.

For example, when the diameter of the filter 4 is 7.8 mm and the diameter of the center hole 43a of the CH filter material 43 is 1 mm, the capsule 5 is easily broken by securing the diameter of the capsule 5 to about 5.8 mm. The center shift amount between the portion 55 and the center hole 43a in the CH filter material 43 can be 1 mm or less. Therefore, it is more preferable that the diameter of the capsule 5 is 75% or more of the inner diameter of the cavity section S2 (cavity 42).

Further, for example, when the diameter of the filter 4 is 7.8 mm and the diameter of the center hole 43a of the CH filter material 43 is 1 mm, the diameter of the capsule 5 is secured to about 6.8 mm, so that the CH filter material 43 The center position of the easily breakable portion 55 in the capsule 5 can be overlapped with the center hole 43 a in the cross section of the filter 4. Therefore, it is particularly preferable that the diameter of the capsule 5 is 85% or more of the inner diameter of the cavity section S2 (cavity 42).

In the above case, the preferred lower limit value for the capsule diameter ratio is shown as 50%, 75%, and 85% in stages with reference to the case where the diameter of the center hole 43a is 1 mm. Under the condition where the ratio is equal, the larger the diameter of the center hole 43a, the larger the lap region where the easily breakable portion 55 of the capsule 5 and the center hole 43a overlap in the cross section of the filter 4 increases. The fragrance liquid splashed from the destruction portion 55 is more likely to flow into the center hole 43a.

Further, the upper limit value of the capsule diameter ratio will be described. When the capsule diameter ratio is 100%, the outer diameter of the capsule body 51 in the capsule 5 is the inner diameter of the cavity section S2 (specifically, the formed paper 44 defining the cavity 42 space). The inner diameter). In the present embodiment, the outer diameter of the capsule 5 is set to be smaller than the inner diameter of the cavity section S2 (that is, the ratio of the diameter of the capsule 5 to the inner diameter of the cavity section S2 (cavity 42) (capsule diameter ratio)). Of the mainstream smoke between the peripheral wall 54 of the capsule body 51 and the inner peripheral surface of the molding paper 44, more specifically, the outer peripheral side of the capsule 5 arranged in the cavity section S2. Is forming. Here, the ratio of the diameter of the capsule 5 to the inner diameter of the cavity section S2 (cavity 42) (capsule diameter ratio) is preferably 95% or less. By defining the upper limit value of the capsule diameter ratio in this way, it is possible to suppress an excessive increase in the airflow resistance of the mainstream smoke passing through the outer periphery of the capsule 5 arranged in the cavity section S2, and the mainstream smoke during smoking Can be distributed smoothly.

By the way, in this embodiment, in the process of manufacturing the CH filter material 43, a liquid plasticizer such as triacetin is added to the cellulose acetate fiber tow by a roll transfer method, a spray method, or the like. The plasticizer contributes to forming the cellulose acetate fiber tows together into a cylindrical shape. Therefore, in the present embodiment, 19% by mass or more of the plasticizer in the mass of the fibers forming the CH filter material 43 is added to the fibers. By defining the amount of the plasticizer added at the time of manufacturing the CH filter material 43 in this way, the fluff of fibers on the inner peripheral surface of the center hole 43a in the manufactured CH filter material 43 can be reduced. In this case, it is preferable that a relatively larger amount of plasticizer is added to the inner peripheral region facing the center hole 43a (hollow channel) in the CH filter material 43 than to other regions. The fluffing of the fiber on the inner peripheral surface of 43a can be more effectively suppressed.

Further, in this embodiment, since the axial length of the capsule 5 is shorter than the axial length of the cavity section S2, it is easy to manufacture the filter 4 in which the capsule 5 is accommodated in the cavity 42. Further, since the difference between the axial length of the cavity section S2 (cavity 42) and the axial length of the capsule 5 is set to 5 mm or less, the fragrance liquid discharged from the capsule 5 can be smoothly fed to the center hole 43a of the CH filter material 43. There is also an advantage that it can flow into the (hollow channel).

<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.

[Example 1]
FIG. 4 is a diagram illustrating the filter according to the first embodiment. FIG. 5 is a diagram illustrating details of each LOT according to the first embodiment. The filter is arranged from the front end side with a filter material produced using a normal monoacetate filter (AF), a cavity part having a length of 10 mm, and a center hole filter (CH filter). ) Were wound up to produce a triple cavity filter with a total length of 30 mm. In the cavity portion, a water capsule for containing water was disposed. The center hole filter used in the examples was set to two levels of 5 mm or 15 mm in length, and the monoacetate filter (AF) was adjusted to 15 mm or 5 mm so that the total length of the triple cavity filter was 30 mm.

The test method is to set the rheometer (manufactured by Sun Science Co., Ltd., product number: CR-3000EX) so that the cavity part of the produced triple cavity filter is crushed, and place the pan on the end of the mouthpiece. Then, the rheometer was set at a clearance of 1.0 mm and a moving speed of 20 mm / min. The water capsules arranged in the cavity under the test conditions were crushed, the scattered water was received by the receiving pan, and the amount of the scattered liquid was calculated from the weight difference of the receiving pan before and after the water capsule was crushed. The number of samples n for each LOT shown in FIG. 5 was three, and the average value thereof (hereinafter referred to as “the amount of scattered liquid”).

As shown in FIG. 5, the parameters of each LOT are the length of the center hole in the center hole filter (hereinafter referred to as “CH length”), the length of the monoacetate filter (AF) (hereinafter referred to as “AF length”). And the diameter of the center hole (hereinafter referred to as “CH diameter”). The length of the cavity (hereinafter referred to as “cavity length”) and the length of the water capsule (hereinafter referred to as “capsule length”) were set to 10 mm and 8 mm, respectively, for all LOTs. The filling amount of water in the water capsule was 130 mg for all LOTs. As shown in the test results in FIG. 5, it was found that the amount of splashed liquid was sufficiently ensured by securing the CH diameter of 1 mm or more. That is, it was found that the water released from the water capsule was sufficiently supplied to the mouth end through the center hole of the center hole filter. In addition, as a whole, it was confirmed that the scattered content liquid amount increased as the CH diameter of the center hole filter was larger and the CH length was shorter.

[Example 2]
FIG. 6 is a diagram illustrating a cigarette according to the second embodiment. FIG. 7 is a diagram illustrating details of each LOT according to the second embodiment. The cigarette according to Example 2 was produced by removing the filter from the commercially available cigarette and replacing it with the filter shown in FIG. In LOTs 7 to 9 of Example 2, the AF length was 8 mm, the capsule length was 14 mm, the cavity length was 15 mm, the CH diameter of the center hole filter was 2 mm, and the filling amount of the water capsule was 310 mg. Further, the target addition rate of the plasticizer to be added to the filter fiber of the center hole filter was made different in each LOT as a parameter.

The addition rate of the plasticizer is a ratio of the mass of the plasticizer to the mass of the filter fiber of the center hole filter. LOT7 and 8 set the target addition rate of plasticizer to 19%, and LOT9 set the target addition rate of plasticizer to 10%. In addition, LOT8 uniformly added a plasticizer corresponding to 19% by weight of the filter fiber mass to the filter fiber in the manufacturing process of the center hole filter, whereas LOT7 is 17% by mass of the filter fiber. A plasticizer with a corresponding mass is uniformly added to the filter fiber, and a plasticizer with a mass corresponding to 2% by mass of the filter fiber is locally added to the region corresponding to the inner peripheral surface of the center hole. (Uniform addition 17% + local addition 2%).

FIG. 8 shows the measured plasticizer addition rate and the measured sectional area of the center hole (hereinafter referred to as “CH sectional area”) for LOT7 and LOT8. The measured plasticizer addition rate is calculated by calculating the plasticizer mass in the center hole filter using gas chromatography (manufactured by SHIMAZU, product number: GC-2010 Plus), and dividing by the filter fiber mass of the center hole filter. did.

The test method is to manually crush the water capsule placed in the cavity part of the manufactured triple cavity filter, receive the splashed water at that time with the saucer, and the amount of liquid scattered from the weight difference of the saucer before and after crushing the water capsule Was calculated. As in Example 2, the number n of samples for each LOT was three.

As shown in FIG. 7, compared with LOT9 in which the target addition rate of the plasticizer is set to 10% by mass, the

LOTs

7 and 8 in which the target addition rate of the plasticizer is set to 19% by mass has a scattered content liquid amount. There were many. It is considered that as the amount of the plasticizer added to the filter fiber increases, the fluff on the inner peripheral surface of the center hole decreases and the amount of scattered liquid increases. As can be seen from FIG. 8, for LOT7 and LOT8, regardless of the measured plasticizer addition rate being equal, LOT7 in which a plasticizer is locally added to the inner peripheral surface of the center hole has a larger CH cross-sectional area than LOT8. As a result. This is considered to be due to the fact that the fluff of fibers on the inner peripheral surface of the center hole is reduced in the LOT7 compared to the LOT8. As a result of LOT7 having a larger CH cross-sectional area than LOT8, it is considered that a larger amount of scattered liquid is secured in LOT7. Further, as shown in FIG. 8, when the center hole cross-sectional area was confirmed at 20 times and 50 times using a digital microscope (manufactured by Keyence Corp., product number: VHX-2000), LOT7 was better than LOT8. It was confirmed that there was little fuzzing on the inner surface of the center hall.

<Embodiment 2>
Next, the filter 4A according to the second embodiment will be described. FIG. 9 is a diagram illustrating a schematic structure of a cigarette 1A according to the second embodiment. The filter 4A provided in the cigarette 1A is such that the capsule 5 arranged in the cavity 42 of the cavity section S2 is supported by the support 6 (in the illustrated example, the first support 6a and the second support 6b). This is different from the filter 4 according to the first embodiment. The support body 6 (the first support body 6a and the second support body 6b) is a ring member with a notch disposed along the inner peripheral surface of the molding paper 44 covering the outer periphery of the cavity 42, for example.

FIG. 10 shows a cross section of the cavity section S2 of the filter 4A according to the second embodiment. FIG. 10 shows a cross section of a position passing through the support 6 in the cavity section S2. The support 6 is a C-shaped ring member having a notch-shaped hollow flow channel 61. The support 6 has an inner diameter equal to the outer diameter of the capsule body 51 in the capsule 5, and is externally fitted to the peripheral wall 54 of the capsule 5 as shown in FIG. 10. Further, the support 6 has an outer diameter equal to the inner diameter of the molding paper 44 and is positioned along the inner peripheral surface of the molding paper 44 in a state where the capsule 5 is supported.

The hollow flow path 61 of the support 6 is a hollow part for circulating the mainstream smoke that has passed through the filter material 41 arranged in the filter section S1 and flows into the cavity 42 of the cavity section S2 during smoking. Since the front region and the rear region of the support 6 in the cavity 42 communicate with each other by the hollow flow path 61 of the support 6, the mainstream smoke smoothly flows through the hollow flow path 61 toward the downstream side through the cavity 42. be able to. In the present embodiment, the capsule 5 disposed in the cavity 42 is supported by the support 6 (in the illustrated example, the first support 6a and the second support 6b), so that the central axis of the capsule 5 is the filter. 4 is arranged coaxially with the central axis. As a result, the easily breakable portion 55 of the capsule 5 can be disposed opposite to the center hole 43 a (hollow channel) of the CH filter material 43. More specifically, the center position of the easily breakable portion 55 in the capsule 5 can be matched with the center position of the center hole 43a in the CH filter material 43, and the fragrance liquid scattered from the easily breakable portion 55 of the capsule 5 can be smoothly centered. It can be made to flow into the hole 43a.

The shape and detailed structure of the support 6 that supports the capsule 5 in the cavity section S2 (cavity 42) can be changed as appropriate. For example, as in the modification shown in FIGS. 11 and 12, various changes can be made to the details of the support 6. 11 and 12, illustration of the forming paper 44 and the chip paper 3 of the filter 4 is omitted. The support 6 shown in FIG. 11 has an O-shaped outer peripheral ring 60 and a plurality of support protrusions 62 that protrude to the inner peripheral side of the outer peripheral ring 60 and support the outer peripheral surface of the capsule 5. The hollow flow path 61 is formed in the. Further, in the support 6 shown in FIG. 12, a plurality of hollow channels 61 are formed as through holes in the O-shaped outer ring 60, and the outer peripheral surface of the capsule 5 is supported by the inner peripheral surface of the outer ring 60. It has a structure.

In the embodiment described above, the center hole 43a of the CH filter material 43 is configured as a hollow channel having a circular cross section, but the shape of the hollow channel is not particularly limited. Further, the center hole 43 a in the CH filter material 43 may be arranged eccentric from the center in the cross section of the CH filter material 43. In the above-described embodiments, the filter section S1 having the filter material 41 is provided in front of the cavity section S2, but the filter section S1 is not necessarily provided.

<Embodiment 3>
FIG. 13 is a diagram illustrating a schematic structure of a cigarette 1B according to the third embodiment. The filter 4B included in the cigarette 1B is different from the

filters

4 and 4A described above in the structure of the suction end section S3. The filter 4B is configured as a so-called recess filter, and a hollow introduction portion 7 is formed in the suction end section S3 instead of providing the CH filter material 43. A movement suppressing member 8 for suppressing the capsule 5 from moving into the mouth end section S3 is provided at the boundary between the cavity section S2 and the mouth end section S3 in the filter 4B. The movement suppressing member 8 includes a restricting portion 81 that suppresses passage of the capsule 5 and a perfume liquid spouted from the easy-to-break portion 55 of the capsule 5 into the mouth end section S3 when the capsule 5 is crushed by the user. It is a member including a grid-like or mesh-like distribution permission unit 82 that allows distribution. The capsule 5 is sandwiched between the restriction portion 81 of the movement suppressing member 8 and the filter material 41. As a result, the movement of the capsule 5 into the mouth end section S3 is suppressed.

In addition, according to the filter 4B of the present embodiment, the fragrance liquid released from the easily breakable portion 55 by the user crushing the capsule 5 passes through the flow permission portion 82 of the movement suppressing member 8, and the mouth end section. It is led to the mouth end (in the mouth) through the introduction part 7 of S3.

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

DESCRIPTION OF SYMBOLS 1 ... Cigarette 2 ... Tobacco winding part 3 ... Chip paper 4 ... Filter 5 ... Capsule 6 ... Support body 7 ... Introduction part 8 ... Movement suppression member

Claims

A mouth end section formed at the mouth end;
A cavity section which is connected to a front stage of the mouth end section and does not include a filter material, and a cavity section in which a capsule containing contents is disposed;
With
The capsule has an easily breakable part that releases the contents contained therein when the capsule is pressed,
In the cavity section, the capsule is arranged in a posture defined so that the easily breakable portion faces the mouth end section,
In the mouth end section, an introduction part is formed that guides the contents discharged from the easily breakable part to the mouth end,
Filter for tobacco products.
The capsule has an outer diameter smaller than the inner diameter of the cavity section;
The filter for tobacco articles of Claim 1.
The mouth end section has a hollow channel that extends in the axial direction and allows the contents discharged from the easily breakable portion to flow therethrough, and the mouth end that restricts the flow of the contents in a region other than the hollow channel is formed. The members are arranged,
The introduction part is formed by the hollow channel of the mouthpiece forming member,
The filter for tobacco articles of Claim 1 or 2.
In the cavity section, the capsule is supported by a support so that the easily breakable portion is disposed to face the hollow channel.
The filter for tobacco articles of Claim 3.
The deviation between the center position of the easily breakable portion and the center position of the hollow channel in the capsule is 1 mm or less.
The filter for tobacco articles of Claim 3 or 4.
The mouthpiece forming member has a diameter of the hollow channel of 1 mm or more.
The filter for tobacco articles as described in any one of Claims 3-5.
The filter for tobacco articles according to any one of claims 3 to 6, wherein a diameter of the capsule is 50% or more of an inner diameter of the cavity section.
The tobacco article filter according to claim 7, wherein a diameter of the capsule is 85% or more of an inner diameter of the cavity section.
The mouthpiece forming member has a length of the hollow channel of 10 mm or less.
The filter for tobacco articles as described in any one of Claim 3 to 8.
The mouthpiece forming member is composed of a filter material in which the hollow channel is formed to penetrate in the axial direction.
The filter for tobacco articles as described in any one of Claims 3-9.
The filter material is added with a plasticizer of 19% by mass or more based on the mass of fibers forming the filter material.
The filter for tobacco articles of Claim 10.
A plasticizer is added to the filter material, and a relatively large amount of plasticizer is added to the inner peripheral region facing the hollow channel of the filter material compared to other regions.
The filter for tobacco articles of Claim 10 or 11.
The tobacco article filter according to any one of claims 3 to 12, wherein an axial length of the capsule is shorter than an axial length of the cavity section.
The filter for tobacco articles according to claim 13, wherein a difference between an axial length of the capsule and an axial length of the cavity section is 5 mm or less.
The tobacco product filter according to any one of claims 1 to 14, wherein a filling amount of the content in the capsule is 50 mg or more.