TWI599321B - Filter for cigarette article - Google Patents

Description

Cigarette item filter

The present invention relates to a filter for cigarette articles.

In order to eliminate the uncomfortable feeling in the mouth during smoking or after smoking, there is known a technique in which a capsule containing a liquid inside is disposed in a filter. For example, Patent Document 1 discloses a technique in which a capsule containing a liquid therein and deformable by a force applied by a finger of a smoker is embedded in a filter material (plug), and can be formed from a filter. The opening of the mouth end face of the device supplies the liquid discharged through the deformation of the capsule to the mouth of the smoker.

[Previous Technical Literature] [Patent Literature]

Patent Document 1: International Publication No. 2013/178515

Patent Document 2: International Publication No. 2014/068295

However, in the technique described in Patent Document 1, since the capsule is embedded in the filter material, the practical manufacturing property is not high. this invention In view of the above, it is an object of the present invention to provide a technique for providing a filter for a cigarette article having a capsule for accommodating a content to be supplied in a counterpart, thereby improving the manufacturing suitability.

In order to solve the above problem, the filter for a cigarette article of the present invention is a cavity region which is connected to a suction port end region formed at the suction end and which does not contain a filter material, so as to release a vulnerable portion of the contents contained therein. The capsule is disposed in a posture facing the mouth end region, and an introduction portion that guides the contents discharged from the fragile portion to the mouth end is formed in the mouth end region.

More specifically, the filter for a cigarette article of the present invention comprises: a mouth end region formed at the mouth end; and a front portion connected to the mouth end region and containing no filter material, and an empty capsule in which the contents are contained is disposed. a cavity region; the capsule has a breakable portion that releases the contents contained therein when the capsule is pressed, and the capsule is disposed in a posture in which the easy-to-destroy portion faces the mouth end region in the cavity region. An introduction portion that guides the contents discharged from the fragile portion to the suction end is formed in the mouth end region.

According to the present invention, for example, after smoking, the user (smoker) grips the cavity area of the filter with the finger on the outer paper, and squeezes the capsule by applying an external force to the capsule disposed in the cavity area. At this time, since the fragile portion that is defined to release the contents contained in the capsule is disposed in the posture of the mouth end region, the contents discharged from the fragile portion flow into the mouth end region. Next, through the guide of the mouth end region At the entrance, the contents released from the vulnerable portion are guided to the mouth end, and the contents can be supplied to the mouth. Moreover, according to the filter of the present invention, the filter region is not included in the cavity region in which the capsule is disposed. Therefore, it is not necessary to embed the capsule in the filter material, so that the manufacturing suitability of the filter can be improved more than ever.

Further, in the invention, the capsule may have an outer diameter smaller than an inner diameter of the cavity region. Thereby, a flow path of the mainstream smoke can be formed on the outer peripheral side of the capsule in the cavity region. It is easy to manufacture a filter in which a capsule is accommodated in a cavity region.

Further, in the present invention, the suction port end region may be provided with a hollow passage having a direction extending in the axial direction and allowing the contents discharged from the fragile portion to flow, and restricting the contents in a region other than the hollow passage. a nozzle forming member that flows through; and the introduction portion is formed by the hollow passage of the mouthpiece forming member. According to this configuration, the contents discharged from the fragile portion of the capsule can be appropriately guided to the mouth end by the hollow passage of the mouthpiece forming member.

Further, in the cavity region, the capsule may be supported by the support so that the fragile portion is disposed to face the hollow passage. Therefore, the capsule in the cavity region can be easily supported in a desired posture.

Further, in the present invention, the center position of the fragile portion of the capsule and the center position of the hollow passage may be shifted by 1 mm or less. Therefore, the contents discharged from the fragile portion of the capsule can be efficiently flowed into the hollow passage, and a sufficient amount of the contents can be passed through the hollow passage. The road is supplied to the mouth.

Further, in the invention, the diameter of the hollow passage of the mouth opening forming member may be 1 mm or more. By being configured in this manner, the contents discharged from the fragile portion of the capsule can be easily flowed into the hollow passage, and a sufficient amount of the contents can be supplied into the mouth through the hollow passage.

Further, in the invention, the diameter of the capsule may be 50% or more of the inner diameter of the cavity region. Further, the diameter of the capsule may be 85% or more of the inner diameter of the cavity region. Therefore, the amount of shift of the center position of the fragile portion in the capsule disposed in the cavity region and the center position of the hollow passage can be reduced, and the contents can be smoothly supplied into the mouth.

Further, in the invention, the length of the hollow passage of the mouth opening forming member may be 10 mm or less. By thus specifying the length of the hollow passage, a sufficient amount of the contents can be introduced into the mouth through the hollow passage, and the time required until the contents are supplied into the mouth after the capsule is crushed can be further shortened.

Further, in the invention, the mouthpiece forming member may be constituted by a filter material that penetrates the hollow passage in the axial direction.

Further, in the present invention, the filter material may be added with a plasticizer which is 19% by mass or more of the fiber mass of the filter material. Therefore, the fluff of the fibers of the inner peripheral surface of the hollow passage in the manufactured filter material can be reduced, and the contents can be smoothly supplied into the mouth through the hollow passage.

Further, in the present invention, the filter material may be added with a plasticizer, and the inner peripheral region of the filter material facing the hollow passage may have a relatively large amount of plasticizer added to other regions. So by By locally increasing the amount of the plasticizer added to the inner peripheral region facing the hollow passage, the fluff of the fibers in the inner peripheral surface of the hollow passage can be more effectively suppressed.

Further, in the invention, the axial length of the capsule may be shorter than the axial length of the cavity region. Therefore, it is easy to manufacture a filter in which a capsule is disposed in a cavity region. In this case, the difference between the axial length of the capsule and the axial length of the cavity region is preferably 5 mm or less. Thereby, the contents discharged from the capsule can be smoothly flowed into the hollow passage of the mouthpiece forming member. Furthermore, in the present invention, the filling amount of the content in the capsule may be 50 mg or more. By ensuring that the amount of contents contained in the capsule is at this level, a sufficient amount of the contents should be supplied into the mouth.

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

According to the present invention, it is possible to provide a technique for providing a filter for a cigarette article having a capsule for accommodating a content supplied to the mouth, which is more suitable for manufacturing.

1‧‧ ‧ Cigarettes

2‧‧‧ Cigarette roll

3‧‧‧ outer paper

4, 4A, 4B‧‧‧ filter

5‧‧‧ capsules

6‧‧‧Support

6a‧‧‧1st support

6b‧‧‧2nd support

7‧‧‧Importing Department

8‧‧‧Moving suppression components

21‧‧‧ cut tobacco

22‧‧‧Roll paper

41‧‧‧Filter materials

42‧‧‧ cavity

43‧‧‧Central hole filter material (CH filter material)

43a‧‧‧Central hole

44‧‧‧ Forming paper

51‧‧‧Capsule body

52‧‧‧Open end

53‧‧‧ front wall

54‧‧‧Wall

55‧‧‧Destruction Department

56‧‧‧ Protrusion

57‧‧‧ Sealing members

60‧‧‧ outer ring

61‧‧‧ hollow flow path

62‧‧‧Support protrusion

81‧‧‧Restrictions

82‧‧‧Circulation Licensing Department

S1‧‧‧Filter area

S2‧‧‧ Cavity area

S3‧‧‧ mouth end area

Fig. 1 is a perspective view of a cigarette of the first embodiment.

Fig. 2 is a schematic view showing the schematic structure of the cigarette of the first embodiment.

Fig. 3 is a schematic view showing the capsule of the first embodiment.

Fig. 4 is a schematic view of the filter of the first embodiment.

Fig. 5 is a detailed schematic view of each batch of the filter of Example 1.

Figure 6 is a schematic view of the cigarette of Example 2.

Figure 7 is a detailed schematic view of each batch of filters of Example 2.

Figure 8 is a detailed schematic view of the seventh and eighth batch filters of Example 2.

Fig. 9 is a schematic view showing the schematic structure of a cigarette of the second embodiment.

Figure 10 is a cross-sectional view showing a cavity region of the filter of the second embodiment.

Fig. 11 is a schematic view showing a modification of the support of the second embodiment.

Fig. 12 is a schematic view showing a modification of the support of the second embodiment.

Fig. 13 is a schematic view showing the schematic structure of a cigarette of the third embodiment.

Here, an embodiment of the filter for cigarettes of the present invention will be described with reference to the drawings. In addition, the dimensions, materials, shapes, relative arrangement, and the like of the components described in the present embodiment are not limited to the technical scope of the invention unless otherwise specified.

<Embodiment 1>

Fig. 1 is a perspective view of the cigarette 1 of the first embodiment. Fig. 2 is a schematic view showing the schematic structure of the cigarette 1 of the first embodiment. Figure 2 is a cross-sectional view of a portion of the cigarette 1.

The cigarette 1 includes a cigarette portion 2 and a filter 4 connected to one end of the cigarette portion 2 via the outer sheet 3. The cigarette wrap portion 2 is obtained by winding the shredded tobacco 21 by the roll paper 22 to form a columnar shape (rod shape).

The filter 4 is wound up by the outer paper 3, and The outer end paper 3 is connected to the rear end side of the cigarette wrap portion 2. The outer layer paper 3 winds the end portion of the cigarette portion 2 and the filter 4 integrally, and connects these (connected). Hereinafter, the end portion of the cigarette roll portion 2 that is connected to the filter 4 in the longitudinal direction (axial direction) is referred to as a "rear end", and the end portion on the opposite side is referred to as a "front end". Further, an end portion of the filter 4 that is connected to the cigarette portion 2 in the longitudinal direction (axial direction) is referred to as a "front end", and an end portion on the opposite side of the front end is referred to as a "rear end". The rear end of the filter 4 forms a "sucking end" which is held by a smoker with a mouth when smoking. Further, a section along the longitudinal direction (axial direction) of the cigarette 1 (cigarette roll portion 2, the filter 4) is defined as a "longitudinal section", and a section perpendicular to the longitudinal section is defined as a "cross section". "."

A filter region S1, a cavity region S2, and a mouth end region S3 are arranged in this order from the front end side inside the filter 4. In the filter region S1, a filter material 41 in which, for example, cellulose acetate formed into a cylindrical shape is wound by a winding paper (tip paper) is provided. However, the filter material 41 is not limited to the fiber tow of cellulose acetate, and various materials can be employed. For example, the filter material 41 may contain particles such as activated carbon or perfume inside the fiber.

A center hole filter (hereinafter referred to as "CH filter") 43 formed in a columnar shape and having a center hole (CH) 43a formed in the axial direction is provided in the mouth end region S3. The center hole 43a is a through passage that passes through the center of the CH filter material 43 and corresponds to the hollow passage and the introduction portion of the present invention. The CH filter material 43 is formed by winding a fiber tow of, for example, cellulose acetate, by winding paper. In the present embodiment, the CH filter material 43 corresponds to the mouthpiece forming member of the present invention.

The filter material 41 and the CH filter material 43 are arranged separately in the axial direction. The cavity region S2 is formed with a cavity 42 as a cavity portion sandwiched between the filter material 41 and the CH filter material 43. The cavity 42 in the cavity area S2 is provided with a capsule 5 in which the contents are sealed. The filter material 41, the capsule 5, and the CH filter material 43 are integrally wound by the forming paper 44. Further, the cavity region S2 is connected to the front portion of the suction port end region S3, and is formed as a region containing no filter material. Further, the capsule 5 has an outer diameter smaller than the inner diameter of the cavity region S2. Thereby, a flow path of the mainstream smoke can be formed on the outer peripheral side of the capsule 5 in the cavity region S2.

Figure 3 is a schematic illustration of the capsule 5. The capsule 5 includes a capsule body 51 of a substantially cylindrical shape, which is elastically deformable. The capsule body 51 is a bottomed cylinder composed of 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 can be obtained by injection molding, for example, 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 configurable within a cylindrical cavity 42 secured by the cavity region S2. The length of the filter 4 of the present embodiment along the axial direction of the capsule 5 disposed in the cavity region S2 (cavity 42) (hereinafter also referred to as "axial length") is proportional to the cavity area S2. The axial length (axial length) is short. In this case, the difference between the axial length of the cavity region 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 be smaller than the inner diameter of the cavity region S2 by a size of several hundred μm to several mm. The inner diameter of the cavity region S2 herein refers to the inner diameter of the forming paper 44 covering the outer periphery of the cavity 42 (filter material 41 and The outer diameter of the CH filter 43). Since the capsule 5 has the above-described size with respect to the cavity 42, the flow path of the mainstream smoke can be formed on the outer peripheral side of the capsule 5 in the cavity region S2. Further, by setting the outer diameter of the capsule 5 to be smaller than the inner diameter of the cavity region S2, it is easy to manufacture the filter 4 in which the capsule 5 is housed in the cavity 42, and the user can easily recognize the inside of the filter 4. The capsule 5, in addition, the position and orientation of the capsule 5 in the cavity 42 will also be stable.

When the capsule 5 is described in detail, the fragile portion 55 having a thickness thinner than the other portions is formed in the center portion of the front wall 53 of the capsule body 51. In the present embodiment, the easily breakable portion 55 has a circular shape and has a thickness of, for example, 0.1 mm or more and less than 0.2 mm. Further, a rod-shaped projection 56 is formed at the center of the fragile portion 55, and the projection 56 protrudes outward from the capsule body 51. The diameter of the projection 56 is, for example, about 0.5 to 0.6 mm, and the protruding length is, for example, about 0.8 mm.

The open end 52 of the capsule body 51 is closed in a liquid-tight state by a sealing member 57. The sealing member 57 is a flexible sheet and is then attached to the end surface of the peripheral wall 54 without hindering the elastic deformation of the capsule body 51. The sealing member 57 is then attached to the peripheral wall 54 by heat sealing, for example. However, the shape of the capsule body 51, the method of attaching the capsule body 51 and the sealing member 57, and the like can be appropriately changed.

The capsule body 51 and the sealing member 57 form a capsule 5 in which the capsule 5 accommodates the contents. In the present embodiment, the content contained in the capsule 5 is an aqueous solution (hereinafter referred to as "perfume liquid") in which an additive such as a fragrance is dissolved in distilled water, but the present invention is not limited thereto. The contents contained in the capsule 5 may be, for example, water, edible oil, and flavored food. A separate substance or mixture of materials, flavorants, oral cooling agents, and the like. The state of the contents may also be liquid, gas, or solid. When a solid is used as a content, it may be suspended and dispersed in a liquid after being processed into a powder.

In the present embodiment, the capsule 5 is disposed in the cavity 42 in a posture that is defined such that the fragile portion 55 faces the end surface of the CH filter 43 disposed in the mouth end region S3. More specifically, the capsule 5 is disposed in the cavity 42 with the fragile portion 55 facing the center hole 43a of the CH filter 43.

According to the cigarette 1 configured as above, after, for example, smoking, the user (smoker) interposes the outer layer paper 3 with the finger to sandwich the cavity region S2 of the filter 4, and is disposed from the diameter direction of the capsule 5 The capsule 5 of the cavity region S2 exerts an external force. This external force causes the capsule 5 to be crushed by the elastic deformation of the capsule body 51. As a result, the internal pressure of the capsule 5 rises.

Here, the increase in the internal pressure of the capsule 5 causes the front wall 53 to bulge outward, and on the other hand, the peripheral wall 54 is expanded toward the outer peripheral side to be elastically deformed. This elastic deformation causes the fragile portion 55 to be stretched toward the radially outer side with respect to the projection 56. Therefore, the specific portion adjacent to the root portion of the projection 56 in the fragile portion 55 is particularly stretched, and the thickness of the specific portion is largely reduced, with the result that the fragile portion 55 starts to be broken. In this case, the projections 56 are triggers when the breakable portion 55 is broken, and the fragile portion 55, which is a thin-walled region, is easily disconnected, and the break position of the fragile portion 55 is also determined. effect. That is, when the capsule 5 is crushed, the fragrance liquid contained in the capsule 5 is first ejected from the projection 56 located at the center of the fragile portion 55 toward the front of the front wall 53.

Once the fragile portion 55 in the capsule 5 is broken, the internal pressure of the capsule 5 is drastically lowered, so that the user can feel the destruction of the capsule 5 through the finger, that is, the release of the fragrance liquid. After the breakable portion 55 is broken, the fragrance liquid in the capsule main body 51 is scattered from the fragile portion 55 toward the central hole 43a of the CH filter 43 as long as the user continues to press the capsule 5.

In the filter 4 of the present embodiment, the offset between the center position of the fragile portion 55 in the capsule 5 and the center position of the center hole 43a in the CH filter member 43 is adjusted to 1 mm or less. The fragrance liquid which is scattered from the easily breakable portion 55 of the capsule 5 and flows out flows into the center hole 43a from the front end side of the CH filter material 43. Next, the fragrance liquid that has flowed into the center hole 43a is introduced into the mouth of the user from the mouth end through the center hole 43a. After smoking or after smoking, the user can add the fragrance liquid to the mouth, thereby eliminating the uncomfortable feeling in the mouth. Further, the cross section of the CH filter material 43 contains filter fibers in a region other than the hollow central hole 43a to restrict the flow of the fragrance liquid discharged from the capsule 5.

Further, according to the filter 4 of the present embodiment, the filter region (filter material) is not contained in the cavity region S2 in which the capsule 5 is placed. Therefore, in the process of the filter 4, since it is not necessary to embed the capsule 5 in the filter material, there is an advantage that the filter 4 has a very good manufacturing suitability. Further, in the cigarette 1 of the present embodiment, the time at which the internal fragrance liquid is discharged from the capsule 5 of the filter 4 is not limited. The user can apply a pressing force to the capsule 5 and squeeze the capsule 5 as described above at a suitable time point during smoking, after smoking, or before smoking, thereby causing the fragrance liquid to be ejected from the fragile portion 55 toward the center hole 43a, and The fragrance liquid is contained in the mouth through the central hole 43a.

Next, in the filter 4 of the present embodiment, when the capsule 5 disposed in the cavity region S2 (cavity 42) is crushed, the fragrance liquid scattered from the easily breakable portion 55 is sufficiently introduced into the oral cavity. It is explained by various parameters that are advantageous. First, the capsule 5 of the present embodiment contains 50 mg or more of the fragrance liquid. By ensuring the filling amount of the fragrance liquid contained in the capsule 5 to such an extent, the fragrance liquid discharged from the fragile portion 55 of the capsule 5 can be easily supplied into the oral cavity.

Further, the diameter of the central hole 43a (hollow passage) of the CH filter 43 is preferably 1 mm or more. When the diameter of the center hole 43a is too small, the fragrance liquid discharged from the fragile portion 55 of the capsule 5 is less likely to flow through the center hole 43a, and by ensuring the diameter thereof to be 1 mm or more, the fragrance liquid is easily formed in the center hole 43a. Flow smoothly.

Further, when the length of the central hole 43a (hollow passage) of the CH filter 43 is too long, the time required for the fragrance liquid flowing from the tip end of the center hole 43a to reach the suction port end is too long, and the space of the center hole 43a is long. Since the volume becomes large, the fragrance liquid is stored in the center hole 43a, and the amount of the fragrance liquid introduced into the port is likely to become insufficient. Therefore, the length of the central hole 43a (hollow passage) of the CH filter 43 is preferably 10 mm or less. By thus specifying the length of the center hole 43a (hollow passage), the fragrance liquid can be easily supplied into the mouth through the center hole 43a, and from the time when the capsule 5 is crushed until the fragrance liquid is supplied into the mouth. The time required can also be shortened.

Further, the center position of the easily breakable portion 55 in the capsule 5 The position at which the projection 36 is formed) is preferably 1 mm or less from the center position of the central hole 43a (hollow passage) of the CH filter 43. The center position of the fragile portion 55 herein means the center position of the fragile portion 55 in the cross section of the filter 4. Similarly, the center position of the center hole 43a (hollow passage) means the center position of the center hole 43a in the cross section of the filter 4. In this way, the amount of shift between the center position of the fragile portion 55 of the capsule 5 and the center position of the center hole 43a in the CH filter 43 in the cross section of the filter 4 (hereinafter referred to as "center shift amount") With the reduction, more fragrance liquid scattered from the broken fragile portion 55 can be made to flow into the center hole 43a.

Further, in the present embodiment, since the axial center of the capsule 5 is coaxial with the center of the easily breakable portion 55, when the diameter of the capsule 5 (the capsule main body 51) is equal to the inner diameter of the cavity region S2 (cavity 42), The center position of the fragile portion 55 and the center position of the center hole 43a substantially coincide with each other in the cross section of the filter 44. On the other hand, the ratio of the diameter of the capsule 5 to the inner diameter of the cavity region S2 (cavity 42) (hereinafter also referred to as "capsule diameter ratio") is small, and the center position of the easily breakable portion 55 is from the central hole 43a. The center position is offset, and the smaller the capsule diameter ratio, the more the above-mentioned center shift amount is increased. Therefore, from the viewpoint of suppressing the amount of center shift of the fragile portion 55 in the capsule 5 and the center hole 43a in the CH filter member 43 from increasing, it is preferable to set the capsule diameter ratio to be larger.

Therefore, in the present embodiment, it is preferable to set the diameter of the capsule 5 to 50% or more of the inner diameter of the cavity region S2 (cavity 42). By setting the diameter of the capsule 5 in this way, the central hole 43a in the CH filter 43 and the front wall 53 of the capsule 5 can be overlapped with each other in the cross section of the filter 4, When the user squeezes the capsule 5, the fragrance liquid discharged from the capsule 5 easily flows into the central hole 43a in the CH filter material 43.

Further, for example, when the diameter of the filter 4 is 7.8 mm and the diameter of the central hole 43a of the CH filter 43 is 1 mm, the diameter of the capsule 5 is ensured to be about 5.8 mm, so that the capsule 5 can be made. The amount of center shift of the fragile portion 55 and the center hole 43a in the CH filter 43 is set to 1 mm or less. Therefore, it is more preferable to set the diameter of the capsule 5 to 75% or more of the inner diameter of the cavity region S2 (cavity 42).

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

Further, in the above example, the case where the diameter of the center hole 43a is set to 1 mm is used, and the preferred lower limit value for the capsule diameter ratio is shown as 50%, 75%, and 85% in stages, but in the capsule diameter ratio. Under the same conditions, the larger the diameter of the central hole 43a, the more the overlapping area of the vulnerable portion 55 of the capsule 5 and the central hole 43a overlap in the cross section of the filter 4, and the scattering from the frangible portion 55 of the capsule 5 The fragrance liquid is more likely to flow into the central opening 43a.

Further, when the upper limit value of the capsule diameter ratio is described, when the capsule diameter ratio is 100%, the outer diameter of the capsule body 51 in the capsule 5 and the inner diameter of the cavity region S2 (detailed in detail) Cavity 42 empty The inner diameters of the formed sheets 44 are equal. In the present embodiment, the outer diameter of the capsule 5 is set to be smaller than the inner diameter of the cavity region S2 (that is, the ratio of the diameter of the capsule 5 to the inner diameter of the cavity region S2 (cavity 42) (capsule diameter) The ratio is set to less than 100%), and in the outer peripheral side of the capsule 5 disposed in the cavity region S2, more specifically, a mainstream smoke is formed between the peripheral wall 54 of the capsule main body 51 and the inner peripheral surface of the forming paper 44. The flow path. Here, the ratio of the diameter of the capsule 5 to the inner diameter of the cavity region S2 (cavity 42) (capsule diameter ratio) is preferably 95% or less. By specifying the upper limit of the capsule diameter ratio as described above, it is possible to suppress the airflow resistance of the mainstream smoke passing through the outer peripheral portion of the capsule 5 disposed in the cavity region S2 from being excessively large, and to allow the mainstream smoke to smoothly flow during smoking.

Further, in the present embodiment, in the step of producing the CH filter material 43, a liquid plasticizer such as glycerin acetate is added to the fiber tow of cellulose acetate by a roll transfer method or a spray method. The plasticizer helps to concentrate the cellulose tow fiber bundle into a cylindrical shape. Therefore, in the present embodiment, a plasticizer in which 19% by mass or more of the fiber mass of the CH filter material 43 is added to the fiber is added. By specifying the addition amount of the plasticizer at the time of production of the CH filter material 43, the fluff of the fibers in the inner peripheral surface of the center hole 43a in the produced CH filter material 43 can be reduced. In this case, the inner peripheral region of the CH filter 43 facing the center hole 43a (hollow passage) is relatively more plasticizer added than the other regions, whereby the inner peripheral surface of the center hole 43a can be more effectively suppressed. The fluff of the fibers.

Further, in the present embodiment, the axial length of the capsule 5 is Since the axial length of the cavity region S2 is shorter, the filter 4 in which the capsule 5 is housed in the cavity 42 is easily manufactured. Further, since the difference between the axial length of the cavity region S2 (cavity 42) and the axial length of the capsule 5 is 5 mm or less, the fragrance liquid discharged from the capsule 5 can be smoothly flowed into the CH filter. The advantage of the central aperture 43a (hollow channel) of the material 43.

<Example>

The present invention will be specifically described by way of examples, but the present invention is not limited to the description of the following examples as long as it does not exceed the gist of the invention.

[Example 1]

Fig. 4 is a schematic view of the filter of the first embodiment. Fig. 5 is a detailed schematic view of each batch of filters of Example 1. The filter is configured by disposing a filter material made of a general monoacetate filter (AF), a cavity portion having a length of 10 mm, and a central pore filter (CH filter) from the distal end side, and The above-mentioned members were wound up by a transparent wound paper (manufactured by Nakamura Chemical Co., Ltd.) to prepare three sets of cavity filters having a total length of 30 mm. A water capsule that houses water inside is disposed in the cavity portion. The central pore filter used in the examples was of a length of 5 mm or 15 mm, and the single acetate filter (AF) was adjusted to 15 mm or 5 mm, and the total length of the three sets of cavity filters was 30 mm.

The test method was carried out by means of an ammeter (Sun Scientific Co., Ltd. model: CR-3000EX) in such a manner that the cavity portions of the three sets of cavity filters produced were crushed, and the tray was placed on the suction port end side. Next, under the test conditions of a gap of 1.0 mm and a moving speed of 20 mm/min, the water capsules placed in the cavity portion were crushed, and the trays were taken up and then scattered. The water is calculated from the difference in weight of the tray before and after the water-breaking capsule is squeezed. The number n of samples in each batch of filters shown in Fig. 5 is three, and the average value (hereinafter referred to as "scattering liquid amount").

As shown in Fig. 5, the parameters of each batch filter are the length of the center hole in the center hole filter (hereinafter referred to as "CH length"), and the length of the single acetate filter (AF) (hereinafter referred to as "AF". Length"), the diameter of the center hole (hereinafter referred to as "CH diameter"). Further, the length of the cavity portion (hereinafter referred to as "cavity length") and the length of the water capsule (hereinafter referred to as "capsule length") are the same for the whole batch of cigarettes, and are set to 10 mm and 8 mm, respectively. Further, the amount of water in the water capsule was the same for the whole batch of cigarettes, and it was set to 130 mg. As shown in the test results of Fig. 5, it is known that the amount of liquid in the scattering content can be sufficiently ensured by ensuring the CH diameter to be 1 mm or more. That is, it is known that the water discharged from the water capsule is sufficiently supplied to the mouth end through the central hole of the central hole filter. Further, as a whole, it was confirmed that the larger the CH diameter of the central pore filter, the shorter the CH length, and the tendency for the amount of liquid to be scattered to increase.

[Example 2]

Figure 6 is a schematic view of the cigarette of Example 2. Figure 7 is a detailed schematic view of each batch of filters of Example 2. The cigarette of Example 2 was produced by removing the filter from a commercially available cigarette and replacing it with the filter shown in Fig. 4 . In the 7th to 9th batch filters of Example 2, the AF length was set to 8 mm, the capsule length was set to 14 mm, the cavity length was set to 15 mm, the CH diameter of the central pore filter was set to 2 mm, and the filling amount of the water capsule was Set to 310 mg. Further, the target addition rate of the plasticizer added to the filter fiber of the central pore filter was set as a parameter to make it different in each batch of the filter.

The rate of addition of the plasticizer is the ratio of the mass of the plasticizer to the mass of the filter fibers of the central pore filter. The 7th and 8th batch filters set the target addition rate of the plasticizer to 19%, and the 9th batch filter set the target addition rate of the plasticizer to 10%. Further, in the eighth batch filter, in the process of the central pore filter, a plasticizer corresponding to a mass of 19% by mass of the filter fiber is uniformly added to the filter fiber, whereas the seventh batch filter is a pair. The filter fiber uniformly added a plasticizer equivalent to 17 mass% of the filter fiber, and a plasticizer equivalent to 2 mass% of the filter fiber was locally added to the region corresponding to the inner peripheral surface of the central hole. (evenly added 17% + partially added 2%).

Further, Fig. 8 shows the measured plasticizer addition rate and the measured cross-sectional area of the center hole (hereinafter referred to as "CH sectional area") for the seventh and eighth batch filters. The measured plasticizer addition rate was calculated by gas chromatography (manufactured by SHIMAZU Co., Ltd., model: GC-2010 Plus), and the mass of the plasticizer in the central pore filter was calculated and divided by the filter fiber mass of the central pore filter. .

The test method is to squeeze the water capsules disposed in the cavity portions of the three sets of cavity filters produced by hand, and take the water which is scattered at the time by the tray, and calculate the weight difference of the trays before and after the water-breaking capsules are squeezed. The amount of liquid that is scattered. Further, in the same manner as in the second embodiment, the number n of samples of each batch of filters was three.

As shown in Fig. 7, the target batch addition rate of the plasticizer was set to 19% by mass, and the dispersion of the 7th and 8th batch filters was set to be 19% by mass, compared with the 9th batch filter which set the target addition rate of the plasticizer to 10% by mass. Content liquid volume many. The more the plasticizer is added to the filter fiber, the less the fluff of the inner peripheral surface of the central hole should be, and the more the amount of liquid is scattered. As can be seen from Fig. 8, regarding the seventh batch and the eighth batch of filters, the measured plasticizer addition rate is equal or not, and the plasticizer is locally added to the inner periphery of the central hole in the seventh batch compared to the eighth batch. Filter, CH section area is larger. This should be because the fluff of the fibers of the seventh batch filter on the inner peripheral surface of the central hole is further reduced as compared with the eighth batch. Further, compared with the eighth batch, the cross-sectional area of the CH of the seventh batch filter is also large, so that it is possible to secure a larger amount of the liquid content of the seventh batch filter. In addition, as shown in Fig. 8, when the cross-sectional area of the center hole was confirmed by using a digital microscope (Model: VHX-2000, model number: VHX-2000), it was confirmed that the seventh hole was compared with the eighth batch. The batch filter has less fluff on the inner circumference of the central hole.

<Embodiment 2>

Next, the filter 4A of the second embodiment will be described. Fig. 9 is a schematic view showing the schematic structure of the cigarette 1A of the second embodiment. The capsule 4 of the filter 4A provided in the cigarette 1A is supported by the capsule 5 of the cavity 42 of the cavity region S2 in the support body 6 (the illustrated example is the first support 6a and the second support 6b), and The filter 4 of the first embodiment is different. The support body 6 (the first support body 6a and the second support body 6b) is a notched annular member that is disposed along the inner circumferential surface of the forming paper 44 that covers the outer periphery of the cavity 42, for example.

Fig. 10 is a cross section showing the cavity region S2 of the filter 4A of the second embodiment. Fig. 10 is a cross section showing the position of the support body 6 in the cavity region S2. The support body 6 is a C-shaped annular member having a hollow channel 61 having a notch shape. Support body 6 has glue The inner diameter of the capsule body 51 in the capsule 5 having the same outer diameter, as shown in Fig. 10, is externally fitted to the peripheral wall 54 of the capsule 5. Further, the support body 6 has an outer diameter equal to the inner diameter of the forming paper 44, and is positioned along the inner circumferential surface of the forming paper 44 in a state of supporting the capsule 5.

The hollow flow path 61 of the support body 6 is a hollow portion through which the mainstream smoke that has flowed into the cavity 42 of the cavity region S2 through the filter material 41 disposed in the filter region S1 during smoking. By the hollow flow path 61 of the support body 6, the front region and the rear region of the support body 6 in the cavity 42 are communicated, so that the mainstream smoke can smoothly flow through the hollow flow path 61 toward the downstream side in the cavity 42. In the present embodiment, since the capsule 5 disposed in the cavity 42 is supported by the support 6 (the illustrated example is the first support 6a and the second support 6b), the central axis of the capsule 5 is arranged to be The center axis of the filter is coaxial. As a result, the fragile portion of the capsule can be disposed to face each other with respect to the central hole a (hollow passage) of the CH filter 43. More specifically, the center position of the fragile portion 55 in the capsule 5 can be made coincident with the center position of the center hole 43a in the CH filter material 43, and the fragrance liquid scattered from the fragile portion 55 of the capsule 5 can be smoothly smoothed. It flows into the center hole 43a.

Further, the shape and detailed structure of the support body 6 supporting the capsule 5 in the cavity region S2 (cavity 42) can be appropriately changed. For example, as in the modification shown in FIGS. 11 and 12, various modifications can be made to the details of the support 6. The illustration of the forming paper 44 and the outer layer paper 3 of the filter 4 is omitted in Figs. 11 and 12 . The support body 6 shown in Fig. 11 has an O-shaped outer peripheral ring 60; and a plurality of support protrusions 62 projecting toward the inner peripheral side of the outer peripheral ring 60 to support the outer peripheral surface of the capsule 5, in the support protrusion 62 A hollow flow path 61 is formed between each other. Further, the support body 6 shown in Fig. 12 is formed by forming a plurality of hollow flow paths 61 in the O-shaped outer peripheral ring 60 in the form of through holes, and supports the outer peripheral surface of the capsule 5 by the inner peripheral surface of the outer peripheral ring 60. structure.

Further, in the above-described embodiment, the central hole 43a of the CH filter 43 is formed as a hollow passage having a circular cross section, but the shape of the hollow passage is not particularly limited. Further, the central hole 43a of the CH filter 43 may be disposed offset from the center of the cross section of the CH filter 43. Further, in the above-described embodiment, the filter region S1 having the filter material 41 is provided in the front portion of the cavity region S2, but the filter region S1 does not necessarily need to be provided.

<Embodiment 3>

Fig. 13 is a schematic view showing the schematic structure of a cigarette 1B of the third embodiment. The structure of the suction port end region S3 of the filter 4B provided in the cigarette 1B is different from that of the above-described filters 4, 4A and the like. The filter 4B is configured as a so-called groove filter, and the inlet portion 7 is formed in a hollow shape without providing the CH filter 43 in the suction port end region S3. Further, a boundary portion between the cavity region S2 and the mouth end region S3 in the filter 4B is provided with a movement suppressing member 8 for suppressing the movement of the capsule 5 into the mouth end region S3. The movement suppressing member 8 includes a restricting portion 81 that suppresses penetration of the capsule 5, and a lattice shape that allows the fragrance liquid discharged from the fragile portion 55 of the capsule 5 to flow out from the fragile portion 55 of the capsule 5 when the capsule 5 is crushed by the user, or flows toward the mouth end region S3 or A member of the mesh circulation permitting unit 82. The capsule 5 is sandwiched between the restricting portion 81 of the movement suppressing member 8 and the filter member 41, and as a result, the movement of the capsule 5 toward the mouth end region S3 can be suppressed. move.

Further, according to the filter 4B of the present embodiment, the fragrance liquid discharged from the easy-destroyable portion 55 passes through the capsule 5 and the flow-through portion 82 of the movement suppressing member 8 passes through the introduction portion 7 of the suction port end region S3. Guided to the mouth end (inside).

Although the preferred embodiment of the present invention has been described above, the filter for cigarettes of the present invention can of course be variously modified, improved, combined, and the like.

1‧‧ ‧ Cigarettes

2‧‧‧ Cigarette roll

3‧‧‧ outer paper

4‧‧‧Filter

5‧‧‧ capsules

21‧‧‧ cut tobacco

22‧‧‧Roll paper

41‧‧‧Filter materials

42‧‧‧ cavity

43‧‧‧Central hole filter material (CH filter material)

43a‧‧‧Central hole

44‧‧‧ Forming paper

S1‧‧‧Filter area

S2‧‧‧ Cavity area

S3‧‧‧ mouth end area

Claims (15)

A filter for a cigarette article, comprising: a mouth end region formed at a mouth end; and a cavity region that is connected to a front portion of the mouth end region and that does not contain a filter material, and is provided with a capsule containing the contents; the capsule When the capsule is pressed, the vulnerable portion that is contained in the inside is released, and the capsule is disposed in the cavity region in a posture in which the easy-to-break portion faces the suction end region, and the suction port end region is disposed. An introduction portion that guides the contents discharged from the fragile portion to the suction end is formed. The filter for cigarette articles according to claim 1, wherein the capsule has an outer diameter smaller than an inner diameter of the cavity region. The filter for cigarette articles according to claim 1, wherein the suction port end region is provided with a hollow passage having a flow extending in the axial direction and allowing the contents discharged from the fragile portion to flow, and The suction port forming member that restricts the flow of the content in the region other than the hollow passage; and the introduction portion is formed by the hollow passage of the suction port forming member. The filter for cigarette articles according to claim 3, wherein the capsule is supported by the support so that the fragile portion is disposed to face the hollow passage in the cavity region. Filtration of cigarette articles as described in claim 3 or 4 The offset between the center position of the fragile portion and the center position of the hollow passage in the capsule is 1 mm or less. The filter for cigarette articles according to the third aspect of the invention, wherein the hollow passage of the suction port forming member has a diameter of 1 mm or more. The filter for cigarette articles according to claim 3, wherein the capsule has a diameter of 50% or more of an inner diameter of the cavity region. The filter for cigarette articles according to claim 7, wherein the capsule has a diameter of 85% or more of an inner diameter of the cavity region. The filter for cigarette articles according to the third aspect of the invention, wherein the length of the hollow passage of the mouthpiece forming member is 10 mm or less. The filter for cigarette articles according to the third aspect of the invention, wherein the suction port forming member is formed by a filter material that penetrates the hollow passage in the axial direction. The filter for cigarette articles according to claim 10, wherein the filter material is added with a plasticizer of 19% by mass or more of the fiber mass of the filter material. The filter for cigarette articles according to claim 10, wherein the filter material is added with a plasticizer, and an inner peripheral region of the filter material facing the hollow passage is relatively more plastic than other regions. Agent. The filter for cigarette articles according to claim 3, wherein the axial length of the capsule is shorter than an axial length of the cavity region. The filter for cigarette articles according to claim 13, wherein a difference between an axial length of the capsule and an axial length of the cavity region is 5 mm or less. The filter for cigarette articles according to any one of claims 1 to 4, wherein the content of the content in the capsule is 50 mg or more.