WO2017068667A1

WO2017068667A1 - Filtered cigarette

Info

Publication number: WO2017068667A1
Application number: PCT/JP2015/079705
Authority: WO
Inventors: 貴稔黄木; 瞬一山川; 豊改發; 幸太郎千田
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

Abstract

Provided is a filtered cigarette in which when filter elements capable of rotating relative to each other about the longitudinal axis of a filter are made to rotate relatively, the amount of relative rotation between the respective elements can be determined without requiring visual confirmation. The filtered cigarette according to the present invention is provided with: a tobacco rod part; and a filter which is connected to one end of the tobacco rod part via tip paper, and of which the outer circumference is rolled up by the tip paper, wherein the filter comprises a first segment and a second segment that is rotatable about the longitudinal axis of the filter relative to the first segment, the tip paper comprises a first band part fixed on the first segment and a second band part which is fixed on the second segment, and which is disposed such that an annular end face thereof abuts against an annular end face of the first band part, and the annular end faces of the first and second band parts are provided with engagement claws that are to be meshed with each other.

Description

Filter cigarette

The present invention relates to a filter cigarette.

A cigarette having a filter including elements that can rotate relative to each other around the longitudinal axis of the filter is known. As this type of cigarette, the first segment and the second segment of the filter plug can be rotated relative to each other about the longitudinal axis of the filter, and the opening formed in the plug wrap for winding the first segment is wound on the second segment. There is known a cigarette that can change the ventilation characteristics by changing the area where the opening formed in the chip paper to be mounted overlaps (see, for example, Patent Document 1).

Further, in relation to this, the first belt body and the second belt body in the chip paper can be rotated relative to each other, and by the positional relationship between the scale displayed on one of these and the position display marker displayed on the other. A cigarette that visually indicates the ventilation level of the filter is also known (see, for example, Patent Document 2).

Special table 2015-500011 gazette International Publication No. 2011/116976

However, in the above-described conventional technology, it is difficult to visually confirm the positional relationship between the scale and the position display marker while holding the cigarette, and it is difficult to adjust the ventilation level while holding the cigarette. there were. Therefore, in order to adjust the ventilation level, the smoker needs to grasp the ignited cigarette and rotate the filter elements that can rotate relative to each other.

The present invention has been made in view of the above circumstances, and its purpose is to make it possible to relatively rotate the elements that can rotate relative to each other around the longitudinal axis of the filter without visually checking the elements. It is providing the filter cigarette which can grasp | ascertain the relative rotation amount.

In order to solve the above-described problem, the filter cigarette according to the present invention includes a first strip portion that fixes the filter chip paper to the first segment, and a second segment that can rotate relative to the first segment. And a locking claw formed on the annular end surfaces of the first and second belt portions are engaged with each other.

More specifically, a filter cigarette according to the present invention comprises a cigarette rod part, and a filter connected to one end of the cigarette rod part via a tip paper and wound around the tip paper by the tip paper, The filter includes a first segment and a second segment rotatable relative to the first segment about a filter longitudinal axis, and the chip paper is fixed to the first segment. A second band part fixed to the second segment and disposed so as to abut the end faces of the first band part and the annular end faces, and the first band part and the second band part The annular end face is provided with locking claws that are engaged with each other. According to the present invention, it is possible to grasp the relative rotation amount of elements that can rotate relative to each other about the filter longitudinal axis without visually confirming the filter.

Further, the locking claws may be continuously arranged in the circumferential direction on the annular end faces of the first belt portion and the second belt portion. According to this, when the first belt portion and the second belt portion of the chip paper are repeatedly relatively rotated around the filter longitudinal axis, some of them are damaged due to interference or wear of the locking claws. Even if it does, it can produce the click sound and click feeling accompanying release of the bending of the remaining non-damaged locking claw.

Further, in the first segment and the second segment, the plug wrap around which the filter plug is wound may have air impermeability. During smoking, air entering the filter through the gap between the first band and the second band is less likely to flow into the filter plug, so that the degree of dilution of mainstream smoke can be suitably controlled.

Further, the first segment and the second segment are allowed to rotate relative to each other by forming a notch extending in the radial direction leaving the filter longitudinal axis center side at the boundary portion, and the first segment and the second segment are allowed to rotate relative to each other. The second segment is connected downstream of the first segment, and a first air hole is formed in a plug wrap for winding the filter plug in the first segment, and the first band portion and the first segment are formed. The abutment position between the annular end faces of the two belt portions is located upstream of the first air flow path, and the second belt portion is located at a position corresponding to the first air hole in the filter longitudinal axis direction. Two air flow paths may be provided.

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

According to the present invention, there is provided a filter cigarette capable of grasping the relative rotation amount of elements without visually confirming when the elements that can rotate relative to each other around the longitudinal axis of the filter are relatively rotated. be able to.

FIG. 1 is a diagram illustrating a schematic structure of a cigarette according to the embodiment. FIG. 2 is a cross-sectional view of a cigarette according to the embodiment. FIG. 3 is a diagram illustrating a detailed structure of the chip paper according to the first embodiment. FIG. 4 is a diagram for explaining a test body used in the sensory evaluation test. FIG. 5 is a diagram showing the results of the first evaluation test. FIG. 6 is a diagram for explaining the shape of the locking claw, the claw height, and the claw pitch width in the test body. FIG. 7 is a diagram showing the results of a basis weight comparison test. FIG. 8 is a diagram showing the results of a paper type comparison test. FIG. 9 is a diagram illustrating a measurement method of the meshing strength according to the meshing strength measurement test. FIG. 10 is a diagram showing a list of specifications of the locking claws in the test specimen sheet used for the mesh strength measurement test. FIG. 11 is a diagram showing the measurement results of the engagement strength of the locking claws in lot number 25. FIG. 12 is a diagram showing the measurement results of the engagement strength of the locking claws in lot number 26. FIG. 13 is a view showing the measurement results of the engagement strength of the locking claws in lot number 27. FIG. 14 is a diagram illustrating a modification of the chip paper according to the first embodiment.

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

<Embodiment 1>
FIG. 1 is a diagram illustrating a schematic structure of a filter cigarette (hereinafter simply referred to as “cigarette”) 1 according to the first embodiment. FIG. 2 is a cross-sectional view showing a part of the cigarette 1. FIG. 2 schematically shows a cross section including the longitudinal axis of the cigarette 1 (hereinafter referred to as “longitudinal cross section”). The cigarette 1 has a tobacco rod portion 2 and a filter 4 connected to one end of the tobacco rod portion 2 via a chip paper 3. The tobacco rod portion 2 is obtained by winding the tobacco stamp 21 with the wrapping paper 22 and has a cylindrical shape (bar shape). In addition, the cross section of the direction orthogonal to the longitudinal axis of the cigarette 1 (cigarette rod part 2, filter 4) is called a "cross section" below.

The filter 4 filters the smoke component contained in the mainstream smoke when passing the mainstream smoke generated when the cigarette 1 is smoked. The filter 4 is formed in a cylindrical shape having substantially the same diameter as the tobacco rod portion 2. The tobacco rod portion 2 and the filter 4 are connected by the chip paper 3 as described above. Hereinafter, the end connected to the filter 4 in the tobacco rod portion 2 is referred to as a “rear end”, and the opposite end is referred to as a “front end”. In addition, a connection end of the filter 4 with the tobacco rod portion 2 is referred to as a “front end” of the filter 4, and an end on the opposite side is referred to as a “suction end” (rear end).

The filter 4 includes a filter plug 5 made of cellulose acetate tow wound by a plug wrap that is an air-impermeable winding paper. As shown in FIG. 2, the filter plug 5 is formed with a notch (slit) 6 a extending in the radial direction of the filter 4 leaving the shaft core portion 6 on the center side of the longitudinal axis of the filter 4. The notch 6a divides the filter plug 5 into two regions, the upstream segment 7 and the downstream segment 8.

That is, the upstream segment 7 and the downstream segment 8 in the filter plug 5 are connected by the shaft core portion 6, and the upstream segment 7 and the downstream segment 8 rotate relatively around the shaft core portion 6. It is possible. In this embodiment, the notch 6 a is formed at a position closer to the rear than the central portion of the filter plug 5 in the longitudinal direction. As a result, the upstream segment 7 is longer than the downstream segment 8.

Here, the plug wrap that winds up the filter plug of the upstream segment 7 is called a first plug wrap 71, and the plug wrap that winds up the filter plug of the downstream segment 8 is called a second plug wrap 81. The first plug wrap 71 and the second plug wrap 81 are made of an air impermeable material.

The chip paper 3 includes a first belt portion 31 fixed to the upstream segment 7 and a second belt portion 32 fixed to the downstream segment 8. The first belt portion 31 of the chip paper 3 has an outer peripheral surface of the wrapping paper 22 of the tobacco rod portion 2 by the first adhesive 9 disposed across the rear end side of the tobacco rod portion 2 and the front end side of the filter 4. The first plug wrap 71 is bonded to the outer peripheral surface. Further, the second band portion 32 of the chip paper 3 is disposed on the rear stage side of the first band portion 31, and the second plug wrap is formed by the second adhesive 10 at the rear end (suction end) of the filter 4. 81 is adhered to the outer peripheral surface.

Further, the chip paper 3 (the first belt portion 31 and the second belt portion 32) is formed of a relatively thick paper. And the 1st belt | band | zone part 31 and the 2nd belt | band | zone part 32 in the chip paper 3 are isolate | separated, and are continuously provided in the state which faced each other annular end surfaces. The annular end surfaces of the first band portion 31 and the second band portion 32 are abutted against each other at a position corresponding to the outer peripheral portion of the upstream segment 7. Here, although the detailed structure of the annular end surfaces in the first band portion 31 and the second band portion 32 will be described later, both end surfaces have a meshing structure that can be engaged with each other. Hereinafter, the annular end surface formed at the rear end of the first band portion 31 is referred to as a first annular end surface 31a. The annular end surface formed at the front end of the second band portion 32 is referred to as a second annular end surface 32a.

Here, the second belt portion 32 of the chip paper 3 is provided with a chip-side vent hole 33 for taking outside air into the filter 4 and diluting mainstream smoke. The tip side vent hole portion 33 is provided at a position covering the outer peripheral portion of the upstream segment 7 in the second band portion 32, in other words, at a position upstream of the notch 6 a in the longitudinal axis direction of the filter 4. Yes.

Further, in the filter plug 5, the air introduced from the tip side vent hole 33 is introduced into the first segment wrap 71 that covers the filter plug of the upstream segment 7 into the upstream segment 7. The wrap side ventilation hole 72 is formed. In the longitudinal axis direction of the filter 4, the installation position of the wrap side ventilation hole 72 is equal to the installation position of the chip side ventilation hole 33 in the chip paper 3 (second band part 32).

In the present embodiment, the wrap side ventilation hole 72 of the first plug wrap 71 and the chip side ventilation hole 33 in the second band part 32 of the chip paper 3 have the same shape and size, and this embodiment Is formed as an elongated rectangular shape. The tip side ventilation hole 33 and the lap side ventilation hole 72 are arranged such that their long sides extend along the circumferential direction of the filter 4. The wrap side ventilation hole 72 formed in the first plug wrap 71 corresponds to the first air hole according to the present invention. Further, the chip side vent hole 33 formed in the second band 32 of the chip paper 3 corresponds to the second air hole according to the present invention.

When smoking, the tip side vent hole 33 of the tip paper 3 (second band part 32) and the lap side vent hole 72 of the first plug wrap 71 overlap each other. Depending on the degree, external air flows into the upstream segment 7 and the mainstream smoke is diluted by the air. In the filter plug 5 according to this embodiment, the upstream segment 7 and the downstream segment 8 are relatively rotatable around the filter longitudinal axis. Therefore, by changing the relative rotational positions of the upstream segment 7 and the downstream segment 8, the overlapping degree of the tip side vent hole portion 33 and the lap side vent hole portion 72 is changed, and the inside of the filter 4 during smoking is changed. The amount of air flowing into the air, that is, the ventilation characteristics of the filter 4 can be changed.

Next, details of the first belt portion 31 and the second belt portion 32 of the chip paper 3 will be described. FIG. 3 is a view for explaining the detailed structure of the first belt portion 31 and the second belt portion 32 of the chip paper 3 according to the first embodiment. As shown in FIG. 3, the first annular end surface 31 a in the first belt portion 31 and the second annular end surface 32 a in the second belt portion 32 are formed as uneven surfaces that mesh with each other.

More specifically, the first annular end surface 31a is provided with a locking claw 310 that is continuously arranged in the circumferential direction of the first band portion 31 (filter 4). Similarly, a locking claw 320 that is continuously arranged in the circumferential direction of the second band portion 32 (filter 4) is provided on the second annular end surface 32a. And as shown in FIG. 3, the latching claw 310 formed in the 1st cyclic | annular end surface 31a of the 1st strip | belt part 31 and the latching claw formed in the 2nd cyclic | annular end surface 32a of the 2nd strip | belt part 32 are shown. 320 are meshed with each other.

For example, the smoker can change the ventilation characteristics of mainstream smoke in the filter 4 simply by picking the first band 31 and twisting it in the circumferential direction while holding the second band 32 in the chip paper 3. Can do. As described above, the locking claw 310 formed on the first annular end surface 31a of the first band portion 31 and the locking claw 320 formed on the second annular end surface 32a of the second band portion 32 mesh with each other. Therefore, when the first belt portion 31 and the second belt portion 32 are relatively rotated in the circumferential direction from this meshing state, the meshing location between the locking

claws

310 and 320 is changed.

Here, the locking claws 310 in the first belt portion 31 have convex (mountain-shaped) “first convex portions 310 a” and concave (valley-shaped) “first concave portions 310 b” formed alternately and continuously. It consists of and. Further, the locking claws 320 in the second band portion 32 are convex (mountain-shaped) “second convex portions 320 a” and concave (valley-shaped) “second concave portions 320 b” formed alternately and continuously. It is composed of When the first belt portion 31 and the second belt portion 32 are relatively rotated in the circumferential direction, the first convex portion 310a of the locking claw 310 provided on the first annular end surface 31a of the first belt portion 31 becomes the second The second claw 320a of the locking claw 320 formed on the second annular end surface 32a of the band portion 32 is overcome and fitted to the next second crevice 320b. At the same time, the second protrusion 320 a of the locking claw 320 formed on the second annular end surface 32 a of the second band portion 32 is the locking claw 310 provided on the first annular end surface 31 a of the first band portion 31. The first convex portion 310a is overcome and fitted into the first concave portion 310b adjacent to the first convex portion 310a.

As described above, the locking claw 310 on the first annular end surface 31a side and the locking on the second annular end surface 32a side in accordance with the relative rotation operation in the circumferential direction of the first band portion 31 and the second band portion 32. When the meshing position with the claw 320 is shifted, the first convex part 310a of the locking claw 310 and the second convex part 320a of the locking claw 320 are bent in the process of getting over each other, The flexure is released. As a result, the sound (for example, click sound) when the bending between the locking

claws

310 and 320 is released and the change in tactile sensation (for example, click feeling) are transmitted to the smoker. Thereby, the smoker can perceive the sense at the time of changing the ventilation characteristic of the filter 4 by an auditory sense and a tactile sense.

Each time the smoker shifts the engagement position of the engagement claw 310 of the first belt portion 31 and the engagement claw 320 of the second belt portion 32 by one, the bending between the

engagement claws

310 and 320 is released. It is possible to perceive the click sound generated when the bend is released and the change in the click feeling. Therefore, the smoker grasps the shift amount (change amount) of the meshing positions of the locking

claws

310 and 320 based on the number of times the change in click sound and click feeling (hereinafter referred to as “click count”) is perceived. Can do. That is, the smoker can grasp the amount of change in the ventilation characteristics of the filter 4 (the amount of change in the amount of air flowing into the filter 4) based on the number of clicks without visual confirmation. That is, according to the cigarette 1 which concerns on this embodiment, it can grasp | ascertain without confirming the relative rotation amount of the elements in the filter 4 visually.

Furthermore, according to the cigarette 1 according to the present embodiment, the ventilation level of the filter 4 can be easily adjusted with the filter 4 still held. Therefore, when the smoker adjusts the ventilation level of the filter 4, in order to relatively rotate the first belt portion 31 and the second belt portion 32 (the upstream segment 7 and the downstream segment 8) in the chip paper 3, There is no need to remove the lit cigarette from the mouth and hold it with both hands. Moreover, when adjusting the ventilation level of the filter 4, since it is not necessary to remove the filter 4 once held from the mouth, it can prevent that the saliva adhering to the 2nd belt | band | zone part 32 adheres to a smoker's finger | toe. .

In the filter 4, the upstream segment 7 and the downstream segment 8 in the filter plug 5 are connected via the shaft core portion 6. Therefore, when the upstream segment 7 and the downstream segment 8 are rotated relative to each other, the shaft core portion 6 is twisted, and a restoring force that causes the fibers (tows) forming the shaft core portion 6 to return to the original state is generated. On the other hand, in the present embodiment, the locking claw 310 of the first belt portion 31 and the locking claw 320 of the second belt portion 32 of the chip paper 3 are engaged with each other. The upstream segment 7 and the downstream segment 8 can be prevented from inadvertently rotating relative to each other due to the restoring force. That is, it can suppress that the ventilation level of the filter 4 shifts | deviates from a desired level arbitrarily.

Next, the evaluation of the effect of the specifications of the locking

claws

310, 320 on the chip paper 3 on the feel, sound, etc. when the engagement positions of the locking

claws

310, 320 are changed will be described.

First, the test body 100 shown in FIG. 4 was produced, and sensory evaluation was performed on the feel, sound, and the like when the meshing positions of the locking claws were changed. The test body 100 produced the 1st cylinder 101 and the 2nd cylinder 102 which imitated the 1st strip | belt part 31 and the 2nd strip | belt part 32 of the chip paper 3 mentioned above with the cardboard, and each made commercially available rod-shaped acetate. The filter 103 is arranged on the outer peripheral side. A plurality of locking claws 104 are formed on the annular end surfaces of the first cylinder 101 and the second cylinder 102 over the entire circumference, and the engagement between the locking claws 104 on the first cylinder side and the second cylinder 102 side is provided. The pawl 104 is meshed. Of the first cylinder 101 and the second cylinder 102, only the first cylinder 101 was bonded to the acetate filter 103.

FIG. 5 is a diagram showing the results of the first evaluation test. In the first evaluation test, the shape, height (hereinafter referred to as “nail height”) H, pitch width (hereinafter referred to as “nail pitch width”) of the locking claws 104 in the first cylinder 101 and the second cylinder 102. A test body 100 having lot numbers 1 to 13 with W as a parameter was manufactured. FIG. 6 is a diagram for explaining the shape, the claw height H, and the claw pitch width W of the locking claws 104 in the first cylinder body 101 and the second cylinder body 102. A commercially available ruled line processing machine or a laser irradiation machine was used for processing the locking claws 104 in the first cylinder 101 and the second cylinder 102. Specifically, for lot numbers 1 to 5, a commercially available ruler (ESKO artwork, model number: Kongsberg XL-20) is used, and for lot numbers 6 to 13, a commercially available laser irradiation machine (KEYENCE, The locking claw 104 was processed using 3-Axis CO2 Laser Marker ML-Z9500 Series. And sensory evaluation was performed about the touch, sound, etc. when the 1st cylinder 101 and the 2nd cylinder 102 are rotated relatively, and the meshing position of the latching claws 104 is shifted.

The sensory evaluation results shown in FIG. 5 were evaluated in four stages: ◎, ○, Δ, and ×. For lot numbers 1 to 5, “impact / sound”, “easy to rotate”, and “durability” were used as evaluation items, and for lot numbers 6 to 13, “impact / sound” was used as an evaluation item. As is apparent from FIG. 5, the first cylinder 101 and the second cylinder are used in any of lot numbers 1 to 5 using a ruled line processing machine for processing thick paper and lot numbers 6 to 13 using a laser irradiation machine. It has been found that it is possible to generate an impact / sound when the engaging position is shifted in a state where the engaging claws 104 in the body 102 are engaged with each other. In addition, it was confirmed that good “impact / sound” can be experienced in both the nail pitch width W within the range of 0.5 to 2 mm and the nail height H within the range of 0.5 to 1.7 mm. . From the viewpoint of improving the comfort and enjoyment when the meshing position of the locking claw 104 is shifted, it is considered more preferable that the claw pitch width W is 0.5 mm or more and 1 mm or less. Further, when the nail height H exceeds 1 mm, the evaluation of “easy to rotate” and “durability” is slightly lowered. Therefore, it is more preferable to set the nail height H to 0.5 mm or more and 1 mm or less. In addition, as for the shape of the locking claw 104, it was confirmed that good “impact / sound” can be experienced both in a triangle (mountain shape) and a semicircular shape.

Next, the second evaluation test will be described. In the second evaluation test, the test body 100 is manufactured using the basis weight of paper used for the first cylinder 101 and the second cylinder 102 and the paper type as parameters, and the first cylinder 101 and the second cylinder 102 are manufactured. The sensory evaluation was performed on the “impact / sound” when the meshing position of the locking claw 104 was shifted by relatively rotating the. FIG. 7 is a diagram showing the results of a basis weight comparison test. FIG. 8 is a diagram showing the results of a paper type comparison test. Lot numbers 14 to 19 shown in FIG. 7 are test bodies 100 in which the types of paper used for the first cylinder 101 and the second cylinder 102 are high-quality paper, and the basis weight is a parameter. Also, lot numbers 20 to 24 shown in FIG. 8 are test bodies 100 in which the basis weight of the paper used for the first cylinder 101 and the second cylinder 102 is substantially constant, and the paper type is set as a parameter.

In lot numbers 14 to 24 related to the second evaluation test, commercially available paper sold by OHM Co., Ltd. is used for the first cylinder 101 and the second cylinder 102. A ruled line machine (ESKO artwork, model number: Kongsberg XL-20) was used. In addition, the shape of the locking claw 104 is set to one level of a triangle. Moreover, about the combination of nail height H and nail pitch width W, nail height H was set to 0.5 mm, and nail pitch width W was set to 1 mm.

As shown in FIG. 7, as the basis weight of the paper material used for the first cylinder 101 and the second cylinder 102 is higher, the first cylinder 101 and the second cylinder 102 are relatively rotated, and The result was that the “impact / sound” increased when the meshing position was shifted. In order to experience a good “impact / sound” when the engagement position of the locking claw 104 is shifted, it is preferable to secure a basis weight of about 150 g / m 2. In the lot number 24, the paper material used for the first cylinder 101 and the second cylinder 102 is subjected to a coating process for increasing the rigidity. In the case of using the paper material thus coated, it has been found that even when the basis weight is about 100 g / m 2, a good “impact / sound” can be experienced.

Next, a mesh strength measurement test for measuring the mesh strength (friction strength) of the locking claws 104 will be described. FIG. 9 is a diagram illustrating a measurement method of the meshing strength according to the meshing strength measurement test. In the meshing strength measurement test, a pair of

specimen sheets

200A and 200B were prepared as shown in FIG.

Specimen sheets

200A and 200B were made of cardboard similar to that used in the first evaluation test described above. The

specimen sheets

200A and 200B were each prepared with three samples. The

specimen sheets

200A and 200B have a rectangular sheet shape, and the locking claws 104 are continuously arranged on one side as shown. The locking claws 104 in the

test bodies

200A and 200B were processed using the ruled line processing machine (manufactured by ESKO artwork, model number: Kongsberg XL-20).

As shown in FIG. 9, the test method includes a pair of test body sheets 200 </ b> A and 200 </ b> B on a stage (base) 301 having a support surface 300 that is a smooth horizontal surface in a state where the locking claws 104 are engaged with each other. Place. Then, one specimen sheet 200A is fixed to the support surface 300 of the stage 301, and the other specimen sheet 200B is used using a commercially available tensile universal testing machine (manufactured by Toyo Seiki Seisakusho, Model No .: Strograph E3) 400. The sample was pulled at a constant speed of 200 mm / min, and the tensile load at that time was measured. When measuring the mesh strength, a pressing plate 302 having a weight of 200 g is placed on the test specimen sheet 200B, and the pressing board 302 is fixed to the test specimen sheet 200B in a fixed direction (see FIG. 9, the specimen sheet 200 </ b> B was moved by pulling at a constant speed in a direction parallel to the direction in which the locking claws 104 are arranged as indicated by arrows. The load range of the tensile universal testing machine (Strograph E3) was 5N, and the measurement distance was 60 mm. That is, the specimen sheet 200B was moved 60 mm at a constant speed of 200 mm / min, and the tensile load at that time was measured.

In the mesh strength measurement test, the

test specimen sheets

200A and 200B having the shape of the locking claw 104 formed on the

test specimen sheets

200A and 200B, the claw height H, and the claw pitch width W as parameters are set as lot numbers 25 to 27. It manufactured and the meshing strength of the latching claw 104 was measured about each. FIG. 10 is a diagram showing a list of specifications of the locking claws 104 in the test specimen sheet used for the mesh strength measurement test. Here, the lot number 25 has the same specifications as the lot number 2 in the shape of the locking claw 104, the claw height H, and the claw pitch width W. The lot number 26 has the same specifications as the lot number 4 in terms of the shape of the locking claw 104, the claw height H, and the claw pitch width W. The lot number 27 has the same specifications as the lot number 5 in terms of the shape of the latching claw 104, the claw height H, and the claw pitch width W.

FIG. 11 is a diagram showing the measurement results of the meshing strength of the locking claws 104 in the lot number 25. FIG. 12 is a diagram showing the measurement results of the meshing strength of the locking claws 104 in the lot number 26. FIG. FIG. 13 is a diagram showing the measurement results of the meshing strength of the locking claws 104 in the lot number 27. 11 to 13, the horizontal axis indicates the displacement (mm) when the specimen sheet 200B is pulled. The vertical axis indicates the tensile load (N) when the tensile universal testing machine 400 pulls the specimen sheet 200B (including the pressing plate 302).

11 to 13, the tensile load fluctuates periodically as the meshing position of the locking claws 104 formed on the

test specimen sheets

200A and 200B shifts with the displacement of the test specimen sheet 200B. Here, the fluctuation range of the tensile load represents the meshing strength of the locking claw 104. Then, for example, when comparing the

lot numbers

25 and 26 in which the shape of the locking claw 104 is both triangular (zigzag), the lot number 25 having a relatively large claw height H is meshed more than the lot number 26. The result that the strength (fluctuation width of the tensile load) was large was obtained. In addition, the result is that the engagement strength (fluctuation width of the tensile load) is smaller in the semicircular lot number 27 than in the case where the locking claws 104 are

triangular lot numbers

25 and 26.

The influence of the difference in the specifications of the locking claws on the feel, sound, etc. when the engagement positions of the locking claws are changed will be described above. In the first belt portion 31 and the second belt portion 32 of the chip paper 3 Examples of the claw pitch width W of the locking

claws

310 and 320 include a mode in which the claw pitch width W is within a range of 0.5 to 2 mm. Further, the claw height H of the locking

claws

310 and 320 in the first band portion 31 and the second band portion 32 can be exemplified as a range of 0.5 to 1.7 mm, and is 0.5 mm or more and 1 mm or less. More preferred. The claw height H of the locking

claws

310 and 320 is particularly preferably 0.5 mm or more and 0.7 mm or less. When the latching

claws

310 and 320 in the first belt portion 31 and the second belt portion 32 are made of paper, the basis weight is set to 150 g / m 2 or more when using non-coated paper whose surface is not coated. It is preferable to use a coated paper whose surface is coated, and the basis weight is preferably 100 g / m 2 or more.

Here, the filter 4 according to the present embodiment can employ various modifications. For example, the shapes of the locking

claws

310 and 320 in the first belt portion 31 and the second belt portion 32 in the chip paper 3 are not particularly limited. In the examples described above, the example in which the locking

claws

310 and 320 have a triangular mountain shape or a semicircular shape has been described, but other shapes may be adopted. Further, in the present embodiment, the locking claw 310 of the first band 31 and the locking claw 320 of the second band 32 in the chip paper 3 have the same shape, but have different shapes. Also good. For example, the latching claw 310 of the first belt portion 31 of the chip paper 3 may be triangular and the latching claw 320 of the second belt portion 32 may be semicircular. Of course, the locking claw 310 of the first band 31 may be semicircular, and the locking claw 320 of the second band 32 may be triangular.

Moreover, in this embodiment, in both the 1st belt | band | zone part 31 (1st cyclic | annular end surface 31a) and the 2nd belt | band | zone part 32 (2nd cyclic | annular end surface 32a) in the chip paper 3, several latching claw over these perimeters Although 310 and 320 are continuously arranged, the present invention is not limited to this.

FIG. 14 is a view showing a modification of the chip paper 3 according to the first embodiment. In this modification, a single locking claw 310 is disposed on the first annular end surface 31a of the first band portion 31, and a plurality of locking claws are arranged along the circumferential direction of the second annular end surface 32a in the second band portion 32. 320 is continuously arranged over the entire circumference.

Even in such an embodiment, the first band 31 and the second band 32 of the chip paper 3 are relatively rotated around the filter longitudinal axis, so that a single locking claw formed on the first annular end surface 31a is formed. The meshing position where 310 meshes with the locking claw 320 formed continuously in the circumferential direction of the second annular end surface 32a is changed. Therefore, similar to the above-described embodiment, the click sound and the change in the click sensation when the locking claw 310 on the first belt portion 31 side and the locking claw 320 on the second belt portion 32 side are released are given to the smoker. The smoker can easily perceive the amount of change in the ventilation characteristics of the filter 4 (the amount of change in the amount of air flowing into the filter 4) while holding the filter 4 in his mouth without relying on visual inspection. can do.

In the modification shown in FIG. 16, a plurality of locking claws 310 are continuously arranged over the entire circumference along the circumferential direction of the first annular end surface 31 a of the first band portion 31. A single locking claw 320 may be disposed on the second annular end surface 32a. Even in such an embodiment, when the first belt portion 31 and the second belt portion 32 of the chip paper 3 are relatively rotated around the longitudinal axis of the filter, the click sound that is generated when the locking

claws

310 and 320 are released from bending. The smoker can perceive the change in the click feeling, and the change amount of the ventilation characteristic of the filter 4 (the change amount of the air inflow into the filter 4) can be easily grasped without relying on visual observation.

However, as in the present embodiment, the locking claws are provided along the circumferential direction of both the first belt portion 31 (first annular end surface 31a) and the second belt portion 32 (second annular end surface 32a) of the chip paper 3. By sequentially arranging 310 and 320, there are the following advantages. That is, when the first belt portion 31 and the second belt portion 32 of the chip paper 3 are repeatedly relatively rotated around the filter longitudinal axis, some of them may be damaged by the interference of the locking

claws

310 and 320. obtain. Even in such a case, there is an advantage that the smoker can perceive the change of the click sound and the click feeling when releasing the flexure by the meshing of the remaining

non-damaged locking claws

310 and 320. .

Further, in the present embodiment, the plug wrap that winds up the filter plug 5, that is, the first plug wrap 71 and the second plug wrap 81 have air impermeability. According to this, even when the outside air flows into the filter 4 through the gap between the first annular end surface 31a of the first belt portion 31 and the second annular end surface 32a of the second belt portion 32 during smoking. Unintended air is less likely to flow into the filter plug 5. Therefore, according to the filter 4 which concerns on this embodiment, the dilution degree of mainstream smoke can be controlled suitably.

Also, in the cigarette 1 according to the first embodiment, a front-stage filter may be disposed in front of the filter plug 5. For example, when the front end of the front filter is connected to the tobacco rod portion and the rear end of the front filter plug is connected to the front end of the upstream segment 7 of the filter plug 5, the first adhesive 9 described above is used for the tobacco rod portion. The first belt portion 31 is disposed on the outer peripheral surface of the wrapping paper 22 of the tobacco rod portion 2 and the outer peripheral surface of the front-stage filter plug via the first adhesive 9. May be adhered.

Further, the position where the first annular end surface 31a in the first band portion 31 and the second annular end surface 32a in the second band portion 32 are engaged with each other is a position corresponding to the outer peripheral portion of the front-stage filter plug in the filter longitudinal axis direction. Alternatively, it may be a position corresponding to the outer peripheral portion of the upstream segment 7. Then, the chip side ventilation hole 33 formed in the chip paper 3 may be formed at a position covering the outer peripheral portion of the upstream segment 7 in the second band portion 32. In addition, when the position where the first annular end surface 31a in the first band portion 31 and the second annular end surface 32a in the second band portion 32 are meshed with each other is a position corresponding to the outer peripheral portion of the front-stage filter plug, the second band The tip side vent hole 33 may be formed at a position corresponding to the outer periphery of the front filter plug in the portion 32.

In the present embodiment, the meshing structure of the first annular end surface 31a of the first belt portion 31 and the second annular end surface 32a of the second belt portion 32 in the chip paper 3 is a mechanism for adjusting the ventilation level of the filter 4. Of course, it can be combined with other mechanisms. The present invention can be applied to various cigarette filters including elements that can rotate relative to each other around the filter longitudinal axis.

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

DESCRIPTION OF SYMBOLS 1 ... Cigarette 2 ... Cigarette rod part 3 ... Chip paper 4 ... Filter 5 ... Filter plug 6 ... Shaft core part 6a ... Notch 7 ... Upstream segment 8 ··· Downstream segment 9 ··· first adhesive 10 ··· second adhesive 31 ··· first band portion 31a ··· first annular end surface 32 ··· second band portion 32a ··· · Second annular end surface 33 ··· chip side ventilation aperture 71 ··· first plug wrap 72 · · · lap side ventilation aperture 81 · · ·

second plug wrap

310, 320 · · · locking claw

Claims

A tobacco rod part, and a filter that is connected to one end of the tobacco rod part via chip paper and whose outer periphery is wound around the chip paper,
The filter is
A first segment;
A second segment rotatable relative to the first segment about the longitudinal axis of the filter;
Including
The chip paper is
A first strip fixed to the first segment;
A second belt portion fixed to the second segment and disposed so as to abut the first belt portion and the annular end surfaces;
Including
Locking claws that are meshed with each other are provided on the annular end surfaces of the first belt portion and the second belt portion,
Filter cigarette.
The filter cigarette according to claim 1, wherein the engaging claws are continuously arranged in the circumferential direction on the annular end faces of the first belt portion and the second belt portion.
In the first segment and the second segment, the plug wrap for winding the filter plug has air impermeability,
The filter cigarette according to claim 1 or 2.
The first segment and the second segment are allowed to rotate relative to each other by forming a notch extending in the radial direction leaving the filter longitudinal axis center side at the boundary portion, and the second segment The segment is connected to the downstream side of the first segment,
A first air hole is formed in a plug wrap for winding the filter plug in the first segment;
The butting position of the annular end surfaces of the first belt part and the second belt part is located upstream of the first air flow path,
Of the second band portion, a second air flow path is formed at a position corresponding to the first air hole in the filter longitudinal axis direction.
The filter cigarette according to any one of claims 1 to 3.
The filter cigarette according to any one of claims 1 to 4, wherein a claw height of the locking claw is 0.5 mm or more and 1 mm or less.
The filter cigarette according to any one of claims 1 to 5, wherein a claw pitch width of the locking claw is 0.5 mm or more and 1 mm or less.