WO2014155568A1 - Filtered cigarette and production method therefor - Google Patents

Abstract

A filtered cigarette (10_A) produced by this production method comprises a filter (14_D) lined up in tandem with the base end of a cigarette (12), and a tipping paper (16) that joins the filter (14_D) and the cigarette (12). The filter (14_D) has: a plurality of axial passages (32) positioned on the outer periphery; and a dam (38) that is provided to a number of axial passages (32a) among the axial passages (32), and occludes the axial passages (32a). Meanwhile, the tipping paper (16) has a plurality of feeding holes (42) capable of communicating with the axial passages (32a). The dam (38) and feeding holes (42) are both positioned in the mouth of a user when the filtered cigarette (10_A) is being smoked. The feeding holes (42) feed a main stream of smoke guided inside the axial passages (32a) in the radial direction of the filtered cigarette (10_A) inside the mouth of the user.

Description

Filter cigarette and manufacturing method thereof

The present invention relates to a filter cigarette and a method for manufacturing the same, and more particularly to a filter cigarette and a method for manufacturing the same that allow a user to efficiently taste the flavor and taste of the mainstream smoke of the cigarette.

When smoking a filter cigarette, mainstream smoke generated from the cigarette is provided to the user through the filter, and the user can taste the aroma and flavor of the mainstream smoke filtered by the filter (see, for example, Patent Document 1). Further, the filter cigarette of Patent Document 1 has a large number of vent holes in a chip paper connecting the cigarette and the filter, and these vent holes are distributed in the circumferential direction of the filter.
When smoking a filter cigarette, the vent introduces outside air into the filter, and the introduced outside air dilutes mainstream smoke inside the filter. Therefore, a filter cigarette having a vent can provide a user with a lighter smoking sensation than a filter cigarette without a vent.

JP 5-23158 (JP 1999323258 A)

This type of filter cigarette sends out the mainstream smoke after filtration in the user's mouth in the direction along the axis of the filter in the user's mouth, regardless of the presence or absence of the above-mentioned vents, when smoking. For this reason, mainstream smoke only flows from the suction end face toward the back side of the oral cavity, and mainstream smoke cannot be diffused over the entire oral cavity. For this reason, the filter cigarette cannot efficiently taste the taste and taste of mainstream smoke to the user.

An object of the present invention is to provide a filter cigarette and a method for manufacturing the cigarette that can diffuse the mainstream smoke of cigarette in the user's mouth during smoking, and allow the user to efficiently taste the flavor and taste of the mainstream smoke.

The above-described object is achieved by the filter cigarette of the present invention, and the filter cigarette is wound around the cigarette, a cylindrical filter arranged in tandem at the base end of the cigarette, and the cigarette and the filter. Chip paper to which the filter is connected.

The filter of the present invention
A filter core formed from a filter material and having a corrugated outer peripheral surface;
A filter wrapping material that wraps around the filter core;
It is defined between the filter wrapping material and the corrugated outer peripheral surface, extends in the axial direction of the filter and has an open end opened at the suction end surface of the filter, and guides mainstream smoke from the cigarette toward the suction end surface. A plurality of axial passages;
A dam provided in some of the axial passages and closing the open end.

On the other hand, the chip paper of the present invention communicates with an axial passage provided with a dam through a filter wrapping material, and includes a plurality of delivery holes arranged to be positioned in the oral cavity of the user together with the dam when smoking a cigarette. .

According to the filter cigarette described above, when smoking, the mainstream smoke generated from the cigarette is filtered as it passes through the filter, and then sent from the suction end face of the filter into the user's mouth along the axial direction of the filter cigarette. Is done.
On the other hand, part of the mainstream smoke is guided into the axial passage. The mainstream smoke introduced into the axial passage not provided with the dam is sent out from the suction end face of the filter along the axial direction of the filter cigarette. On the other hand, the mainstream smoke introduced into the axial passage provided with the dam is blocked by the dam, and is passed through the filter packaging material from the tip paper delivery hole in the user's mouth in the radial direction of the filter cigarette. Sent out.

After that, the mainstream smoke introduced into the axial passage is not filtered by the filter, and the mainstream smoke delivered in the radial direction of the filter cigarette in the user's oral cavity is the mainstream smoke in the oral cavity. Since the diffusion is promoted, the user can taste the original flavor and taste of cigarette efficiently. Since such an advantage increases as the number of delivery holes for sending mainstream smoke increases, dams are preferably provided in more than half of the axial passages.
On the other hand, the distance between the delivery hole and the suction end face is preferably within 8.0 mm.

In addition, the tip paper can include a plurality of vents separate from the delivery holes, which allow the introduction of outside air into the filter. When smoking, the vents introduce outside air into the filter, and the introduction of such outside air dilutes mainstream smoke and provides a light smoking feeling to the user. Even if the mainstream smoke is diluted in this way, as described above, the mainstream smoke is sent out from the delivery hole in the radial direction of the filter cigarette into the user's mouth, so that the user can fully enjoy the original flavor and taste of the cigarette. be able to.
In this case, the filter preferably includes a cavity between the vent and the axial passage. Such a cavity is useful for mixing mainstream smoke and outside air and making the mainstream smoke dilution rate uniform.

The present invention also provides a manufacturing method of the above-described filter cigarette,
A plurality of longitudinal grooves in which the corrugated sheet forms one side of the corrugated sheet, and a group of lands provided in some of these longitudinal grooves. Each group of lands is arranged in the width direction of the corrugated sheet and has a width corresponding to two dams, while the groups of lands are arranged at regular intervals along the longitudinal groove; and
After the first step, a rod-shaped continuous body is formed from the corrugated sheet, the filter material and the filter wrapping material, and the continuous body is formed between the longitudinal groove of the corrugated sheet and the filter wrapping material. A second step having a conduit which becomes a directional passage;
After the second step, when preparing a filter including a dam formed from a group of lands by cutting the continuum, the lands are continuously arranged so that the position of the land group is a predetermined position with respect to the cutting position of the continuum. A third step of cutting the body;
After the third step, the cigarette and the filter are connected using the tip paper, and the tip paper has a fourth step in which the tip paper has a delivery hole to be assigned to each of the axial passages in the filter.
Such a manufacturing method manufactures the above-mentioned filter cigarette and achieves the object of the present invention.

For example, the third step is
A rod member including one group of lands is formed by periodically cutting the continuum, and then a double filter corresponding to two of the filters including the rod member or a part of the rod member is formed, The double filter is a process having one group of lands in the center of the double filter;
The fourth step is
Cigarettes are arranged at both ends of the double filter, and then a double chip cigarette corresponding to two filter cigarettes is formed by wrapping the cigarette and the double filter with a double chip paper having a width twice that of the chip paper. The double tip paper has a delivery hole to be assigned to each filter axial passage,
The manufacturing method may further include a fifth step of cutting the double filter cigarette with a land in the double filter to form two filter cigarettes.
Even in the manufacturing method in this case, the above-described filter cigarette is manufactured to achieve the object of the present invention.

Preferably, the third step includes
A first detection process for detecting the group of lands and periodically generating a detection signal;
A second detection process for detecting the cutting position of the continuum when viewed from the group of lands on the continuum based on the cutting timing and detection signal of the continuum in the third step;
A control process that feedback-controls at least one of the cutting timings of the corrugated sheet feed speed continuum by a pair of corrugated rolls to eliminate the deviation between the cutting position and the predetermined position.
The third step of the feedback control described above prevents the land from shifting from the center position of the double filter, and enables accurate positioning of the dam.

The filter cigarette and the manufacturing method thereof according to the present invention cause mainstream smoke to be delivered in the radial direction of the filter cigarette from the delivery hole of the tip paper in the user's oral cavity during smoking. The user can efficiently enjoy the flavor and taste of mainstream smoke.

It is the figure which fractured | ruptured and showed the filter cigarette of 1st Embodiment. It is an expanded sectional view which shows a part of filter cigarette of FIG. It is the figure which showed a part of suction mouth end surface in the filter cigarette of FIG. It is an expanded sectional view showing a part of filter cigarette of a 2nd embodiment. It is an expanded sectional view showing a part of filter cigarette of a 3rd embodiment. It is an expanded sectional view showing a part of filter cigarette of a 4th embodiment. FIG. 5 is a schematic view of a rod manufacturing machine used for manufacturing filter components in manufacturing the filter cigarette of the first to fourth embodiments. It is sectional drawing which showed a part of a pair of corrugate forming roll of FIG. It is a figure which shows a part of single side | surface of the corrugate sheet | seat formed of a pair of corrugate forming roll. FIG. 10 is a perspective view of the corrugated sheet of FIG. 9. Fig. 10 is a longitudinal section of a part of the corrugated sheet of Fig. 9. It is a figure which shows a part of single side | surface of the corrugated sheet | seat of a modification. It is a longitudinal cross-sectional view of a part of the corrugated sheet of FIG. It is a figure which shows the flow of manufacture of a double dual filter. It is a figure which shows the flow of manufacture of a double cavity filter. It is a figure which shows the flow of manufacture of a double plane filter. It is a figure which shows the flow of manufacture of a filter cigarette. It is a figure which shows the flow of the feedback control for the land which should be formed in a corrugated sheet. It is the schematic which showed the laser drilling machine which forms a vent hole and a delivery hole in a double filter cigarette online.

Figure 1 shows a filter cigarette 10 _A according to the first embodiment of the present invention. The filter cigarette 10 _A includes a cigarette 12 and a cylindrical filter 14 _D arranged in tandem at the base end of the cigarette 12, and the cigarette 12 and the filter 14 _D are wound with air-impermeable chip paper 16. Are connected to each other.

In this embodiment, the filter 14 _D As is apparent from Figure 2 is shown as a dual filter, charcoal filter plain filter element 20 to form a mouthend face 18 of the filter 14 _D, for example, positioned in the cigarette 12 side Element 22. These filter elements 20 and 22 are connected to each other by winding a forming paper 24.

The plain filter element 20 includes a bundle of filter fibers 26 and a web 28 that wraps the bundle 26. On the other hand, charcoal filter element 22, when compared to plain filter element 20, further includes activated carbon particles 30, which are distributed within filter fiber bundles 26.
The filter fiber bundle 26 described above forms a filter core, and in the case of the present embodiment, the formed paper 24 and the web 28 are both air permeable and form a filter wrapping material that wraps around the filter core. For example, the molding paper 24 and the web 28 have air permeability of 10,000 coresta units (cm ³ · min ⁻¹ · cm ⁻² · kPa) or more, preferably 30,000 coresta units or more.

Further, the plane filter element 20 has a large number of axial passages 32 on the outer periphery of the plane filter element 20, and these axial passages 32 are spaced apart in the circumferential direction of the plane filter element 20 as is apparent from FIG. 3. Are arranged. In order to form such an axial passage 32, the filter fiber bundle 26 in the plain filter element 20 has, for example, an air-impermeable corrugated outer peripheral surface 34 which cooperates with the web 28. An axial passage 32 is formed between the corrugated outer peripheral surface 34 and the web 28.

All the axial passages 32 have inner ends that open at the inner end face 36 of the plane filter element 20 located on the charcoal filter element 22 side. However, in the case of this embodiment, the outer end of the axial passage 32 does not form an open end that is entirely open at the suction end face 18. That is, although some outer ends of the axial passage 32 open at the suction end face 18, air impermeable dams 38 are respectively arranged at the outer ends of the remaining portions of the axial passage 32. The opening end of the axial passage 32 is closed.
Hereinafter, a suffix a is given to the reference sign 32 of the axial passage provided with the dam 38, and a suffix b is given to the reference sign 32 of the axial passage not provided with the dam 38.

As is apparent from FIG. 3, in the present embodiment, the dams 38 are respectively disposed in every other axial passage 32 when viewed in the circumferential direction of the plane filter element 20. That is, the dam 38 is provided in half of the axial passage 32. In FIGS. 1 to 3, the dam 38 is shown filled.
Dams 38 may be provided in more than half of the axial passages 32, or may be provided in all of the axial passages 32.

On the other hand, the paper web 16 as shown in FIG. 1, for example, a vent hole 40 of the two rows of vent holes 40 in each row over the entire circumference of the filter 14 _D, the intervals in the circumferential direction of the filter 14 _D It is distributed. Such vent holes 40 during smoking of the filter cigarette 10 _A, allowing the introduction of the outside air to the filter 14 in _D. In this case, outside air indicated by an arrow _VA in FIG. 2 is introduced into the filter fiber bundle 26 in the charcoal filter element 22 through the forming paper 24 and the web 28. In order to allow the introduction of the above-mentioned outside air, the two rows of vent holes 40 must be positioned outside the user's mouth when smoking. For this reason, the two rows of vent holes 40 are disposed away from the suction end face 18 by, for example, 10.0 mm or more.

Further, the tip paper 16 having a delivery hole 42 of the separate example two rows with vent holes 40, delivery holes 42 in each row are also over the entire circumference of the filter 14 _D, intervals in the circumferential direction of the filter 14 _D Is distributed. Such delivery hole 42 is formed in the vicinity of the dam 38 during smoking of the filter cigarette 10 _A, it is arranged to sit in the mouth of the user with the dam 38.

In the case of this embodiment, both the delivery hole 42 and the dam 38 are present within a region within a predetermined distance D (see FIG. 1) from the suction end face 18, and the distance D is, for example, 8 mm or less, preferably 5.0 mm. In the following, various settings such as 3.0 mm or less, most preferably 1.5 mm or less are more preferable. However, when smoking, the distance D is preferably as short as possible in order to position both the dam 38 and the delivery hole 42 in the user's mouth.
The delivery holes 42 described above preferably communicate with only the axial passage 32a through the molding paper 24 and the web 28, respectively. However, a part of the delivery hole 42 may communicate with the axial passage 32 b through the molding paper 24 and the web 28.

According to the above-mentioned filter cigarette 10 _A, smoking during the mainstream smoke generated from the cigarette 12 predominantly sequentially passes through the charcoal filter element 22 and the plain filter element 20 as indicated by arrow S _M in FIG. 2, these The filter elements 22 and 20 receive a predetermined filtering action. Thereafter, the mainstream smoke S _M is transmitted along the axial direction of the filter cigarette 10 _A into the mouth from the mouth end surface 18 of the user as indicated by the illustration in FIG.

During smoking, outside air V _A is introduced into the charcoal filter element 22 from the vent hole 40 through the forming paper 24 and the web 28 of the filter 14 _D , and this outside air V _A dilutes the mainstream smoke S _M. Therefore, the diluted mainstream smoke _SM is sent into the user's mouth, and a light smoking feeling is provided to the user.
On the other hand, some of the mainstream smoke _{S M} after dilution, arrow _S P, respectively guide the charcoal filter element 22 as mainstream smoke represented by _{S Q} axial passage 32a of the plain filter element 20, in 32b of FIG. 2 Toward the inlet end face 18.

Axis mainstream smoke S _P guided toward passage 32a is blocked by the dam 38, it is not sent from the mouth end surface 18 into the oral cavity of the user. However, since the axial passage 32a communicates with the delivery hole 42 through the web 28 and the molding paper 24, and the dam 38 and the delivery hole 42 are both positioned in the user's mouth during smoking, the mainstream smoke _SP as mainstream smoke is indicated by an arrow S _R in FIG. 2, it is delivered into the oral cavity of the user through the delivery hole 42 from the axial passage 32a. In this case, there is no possibility that the mainstream smoke S _P is filtered through a plain filter element 20. Such mainstream smoke S _R is discharged in the radial direction of the filter cigarette 10 _A at the mouth of a user, as shown in the illustration in FIG.

On the other hand, the mainstream smoke S _Q guided within the axial conduit 32b is sent from the mainstream smoke S _M as well as the mouth end surface 18 into the oral cavity of the user. Such mainstream smoke _SQ is also not filtered by the plain filter element 20.
As described above, during smoking, the mainstream smoke in the mouth of the user along the axis direction of the filter cigarette 10 _A S _M, in addition to the flow of S _Q, of the mainstream smoke S _R toward the radial direction of the filter cigarette 10 _A Since the flow is generated, the mainstream smoke is uniformly diffused in the oral cavity. Therefore, even if the mainstream smoke is diluted, the user can taste the flavor and taste of the mainstream smoke effectively.

Incidentally, since the vent holes 40 and the delivery hole 42 described above it is provided by the respective two rows (see FIG. 1), outside air V _A and the mainstream smoke S _R in FIG. 2 also should be shown two each is there. However, in order to simplify the drawing, the outside air V _A and the mainstream smoke S _R in FIG. 2 is shown as a representative one.
Further, in FIG. 2, for showing the flow of the outside air V _A and the mainstream smoke S _R more clearly, the web 24 and the molding sheet 28 is shown in a state having a communication hole communicating respectively vent holes 40 and the delivery hole 42 ing. However, such a function of the communication hole can also be obtained by having both the web 24 and the forming paper 28 have air permeability as described above.

4 to 6 show part of the filter cigarettes 10 _B to 10 _{D according} to the second to fourth embodiments, respectively, and the filter cigarettes 10 _B to 10 _D will be described below.
In the description of the filter cigarettes 10 _B to 10 _D, the same components as those of the filter cigarettes already described in FIG. 4 to FIG. Yes.

The filter cigarette 10 _B (FIG. 4) of the second embodiment includes a filter 14 _C instead of the filter 14 _D when compared with the filter cigarette 10 _A. This filter 14 _C is shown as a cavity type filter and further comprises a cavity 44 between the plane filter element 20 and the charcoal filter element 22. According to such a filter 14 _C, ambient air _{V A} mainstream smoke _S M diluted in, the _{S P} are mixed in the cavity 44, dilution of the mainstream smoke _{S M, S P (S R} , S Q) The rate approaches the same value.

The filter cigarette 10 _C (FIG. 5) of the third embodiment includes a filter 14 _P instead of the filter 14 _D when compared with the filter cigarette 10 _A. This filter 14 _P is shown as a plain filter and includes only a plane filter element 46. This plane filter element 46 is the same as the plane filter element 20 except that the charcoal filter element 22 is longer than the plane filter element 20 and the vent hole 40 communicates with the axial passage 32 only through the web 28. In this case, the filter fiber bundle 26 and the paper roll 28 in the plain filter element 46 to form a filter core and filter wrapping material of the filter 14 _P, respectively.

Filter Cigarette 10 _D of the fourth embodiment (FIG. 6) is Taki versus filter cigarette 10 _A, a filter 14 _D 'instead of the filter 14 _D. This filter 14 _D ′ is different from the filter 14 _D only in that each of the vent hole 40 and the delivery hole 42 extends from the chip paper 16 further through the forming paper 24 and the web 28. That is, the filter 14 _D ′ has a vent hole 40 and a delivery hole 42 as shown in FIG. 6, unlike the vent hole 40 and the delivery hole 42 shown in FIGS. 2, 4, and 5, respectively. . In this case, the web 24 and the formed paper 28 may not have air permeability.

As apparent from FIG. 6, the delivery hole 42 has an outer end opened to the outer surface of the tip paper 16 so as to be positioned in the region D from the suction end surface 18 and in the vicinity of the dam 38 as described above, and an axial passage. 32a, and a inner end communicating with 32b respectively, the inner ends of the delivery holes 42 are arranged remote from the mouth end face 18 in the axial direction of the filter cigarette 10 _D than the outer end of the delivery hole 42. That is, delivery hole 42 is not a vertical hole with respect to the axial direction of the filter cigarette 10 _D, are formed as inclined inclined hole.
In this case, the end portion of the dam 38 is preferably present in the vicinity of the inner end of the delivery hole 42 as indicated by a broken line in FIG. If such a dumb 38, smoothly guided to the mainstream smoke S _P is sent holes 42 described above, can be vigorously delivered mainstream smoke S _R to be delivered into the oral cavity of the user from the delivery hole 42 .

Needless to say, the filter cigarettes 10 _B , 10 _C and 10 _{D of} the second to fourth embodiments have the same functions and advantages as the filter cigarette 10 _A of the first embodiment. Incidentally, vent holes 40 and the delivery hole 42 of filter cigarettes 10 _D is a filter cigarette _{10 A,} 10 B, to likewise 10 _C applicable.

Next, in describing the manufacturing method of the filter cigarettes 10 _A , 10 _B , 10 _C , and 10 _D , first, a preparation process for preparing the filter 14 _D will be described.
FIG. 7 shows a rod making machine 48. The rod making machine 48 includes a wrapping section 50, which has an endless garment belt 52. The garniture belt 52 travels in the direction of arrow R shown in FIG.

A web 54 for forming the web 28 and filter tows 56 and 58 for forming a bundle 26 of filter fibers are respectively supplied on the garniture belt 52. The web 54 and the filter tows 56 and 58 are supplied with the garniture. The belt 52 is sequentially overlapped. The web 54 is unwound from the roll 60, and the filter tows 56 and 58 are pulled out from the tow sources 62 and 64, respectively.
Before the filter tow 56 reaches the wrapping section 50, the filter tow 56 passes through a pair of pretension rolls 66, a pair of blooming rolls 68, a plasticizer (for example, triacetin) adding device 70, and the like, and then a pair of corrugated rolls 72. Pass through.

As shown in FIG. 8, the pair of corrugated forming rolls 72 have outer peripheral surfaces that mesh with each other, and are heated to a predetermined temperature (for example, 140 to 150 ° C., preferably 145 ° C.). Therefore, when the filter tow 56 passes through the pair of corrugated forming rolls 72, the filter tow 56 is formed into a corrugated sheet 74 in the form of a flat sheet (first step), and this corrugated sheet 74 is a pair of corrugated forming rolls. The sheet is continuously fed from the corrugating roll 72 at a speed corresponding to the peripheral speed of 72.

One side of such a corrugated sheet 74 is formed by a number of longitudinal grooves 76 as shown in FIGS. 9 and 10, and these longitudinal grooves 76 extend in the longitudinal direction of the filter tow 56 and the width of the filter tow 56. Adjacent to each other in the direction. In addition, in FIG. 9, the broken line shows the trough of the longitudinal groove 76, and it goes without saying that the other surface of the corrugated sheet 74 is also formed by the longitudinal groove.

The longitudinal grooves 76 are not all continuous in the longitudinal direction of the corrugated sheet 74, but when viewed in the width direction of the corrugated sheet 74, every other longitudinal groove 76 is a flat land for forming the dam 38. 80 is periodically blocked.
Therefore, the lands 80 form groups G arranged in the width direction of the corrugated sheet 74, while the groups G of lands 80 are arranged at a predetermined interval in the longitudinal direction of the corrugated sheet 74. Such lands 80 are formed by periodically eliminating the meshing of the outer peripheral surfaces of the pair of corrugated rolls 72 along the circumferential direction of the corrugated roll 72.

A constant pitch P _T (FIG. 9) is secured between the groups G of the lands 80 described above, and this pitch P _T corresponds to twice the length of the plane filter element 20 or 46 described above. In FIG. 11, the width of the land 80 along the longitudinal direction of the corrugated sheet 74 is indicated by a reference symbol W, and the width W corresponds to two dams 38 described above.
The corrugated sheet 74 is formed so that the land 80 comes into contact with the web 54 when the corrugated sheet 74 is superimposed on the garniture belt 52 via the web 54.

On the other hand, before the filter tow 58 reaches the wrapping section 50, the filter tow 58 has a pair of pretension rolls 82, a pair of blooming rolls 84, a plasticizer (eg, triacetin) addition device 86, a pair of delivery rolls 88, and a trumpet. The guide 90 is sequentially passed. The trumpet guide 90 squeezes the filter toe 58 from the sheet form to the rod form, whereby the rod form filter tow 58 is superimposed on the garniture belt 52 via the corrugated sheet 74 and the web 54.

After that, when the filter tow 58 and the corrugated sheet 74 pass through the wrapping section 50 together with the garniture belt 52, the web 54 is assisted by the garniture belt 52, and the filter tow 58 as a filter material is rolled while the corrugated sheet 74 is rolled. Wrap up. Accordingly, the continuum C _P to form a plain filter element 20 or 46 is formed, the continuum C _P is delivered from the wrapping section 50.

Such continuum C _P has a number of conduits as the axial passage 32a, 32b described above between the longitudinal grooves 76 of the web 54 and corrugated sheet 74. Therefore, in this embodiment, the corrugated sheet 74 forms the corrugated outer peripheral surface 34 (see FIG. 3) of the plain filter element 20 or 46, and at this time, both side edges of the corrugated sheet 74 are approximately the width of the longitudinal groove 76. They are superimposed on each other by 1.2 times.
Before the web 54 reaches the wrapping section 50, rail glue for bonding the web 54 and the corrugated sheet 74 to the web 54, and seams for bonding both side edges of the web 54 that are overlapped with each other are provided. Glue is applied in advance.

Thereafter, the continuum C _P passes through the cutting section 92, is cut at a predetermined cutting timing at the cutting section 92, cut here forms a continuum C _P in each plane filter rod PFR. These plane filter rods PFR correspond to an even multiple of the plane filter element 20, and thus the plane filter element 20 can be obtained from the plane filter rod PFR.

As shown in FIGS. 12 and 13, the land 80 described above may be provided over the entire width direction of the corrugated sheet 74, that is, over the entire longitudinal groove 76, or the two land portions 80 a. , 80b.
Here, when the lands 80 are provided in all of the longitudinal grooves 76, all the axial passages 32 described above become the axial passages 32a provided with the dams 38. Therefore, the delivery holes 42 are provided in the axial passages 32a. the amount of mainstream smoke S _R described above by providing increased, the user can enjoy more strongly cigarettes 12 original flavor and taste.

The land 80 and the land portions 80a and 80b shown in FIGS. 11 and 13 are all open on the other surface of the corrugated sheet 74, but are indicated by a one-dot chain line in FIGS. As described above, the land 80 and the land portions 80a and 80b may be solid.

On the other hand, the aforementioned charcoal filter element 22 is obtained by cutting the charcoal filter rod CFR. The charcoal filter rod CFR is manufactured by a rod manufacturing machine 48 'which is a modification of the rod manufacturing machine 48 of FIG. In this rod manufacturing machine 48 ′, the components in the block BL indicated by the one-dot chain line are deleted from the rod manufacturing machine 48, while added to the supply path of the filter tow 58 as indicated by the one-dot chain line. A device 94 is newly added. The adding device 94 is disposed, for example, between the adding device 86 and a pair of delivery rolls 88 and sprays activated carbon particles on the filter tow 58.

Such a rod manufacturing machine 48 ′ forms a charcoal filter rod CFR in which a filter tow 58 containing activated carbon particles is wrapped only by the web 54, and this charcoal filter rod CFR corresponds to an even multiple of the charcoal filter element 22. .
Figure 14 shows a flow for obtaining a double dual filter DDF corresponding from plain filter rods PFR and charcoal filter rods CFR to two pins of the filter 14 _D (third step).

First, the plane filter rod PFR is cut into a double plane filter DPF corresponding to two of the plane filter elements 20, and this double plane filter DPF has a land 80 in the center. On the other hand, the charcoal filter rod CFR is also cut into double charcoal filters DCF corresponding to two charcoal filter elements 22.

Thereafter, the double plane filter DPF and the double charcoal filter DCF are formed in one filter row FA in which the double plane filter DPF and the double charcoal filter DCF are alternately arranged. Such a filter column FA, at the same rod making machine with the aforementioned rod making machine 48 ', wrapped in the web 96 to form a molded sheet 24, thereby, the continuum C _D is formed.

Thereafter, continuum C _D is cut double dual filter DDF corresponding to two partial filters 14 _D, double dual filter DDF respectively disposed and double plain filter DPF, at both ends of the double plain filter DPF in the center Charcoal filter element 22. Incidentally, charcoal filter element 22 is obtained by cutting at the center of the double-charcoal filters DCF continuum C _D.

On the other hand, FIG. 15 shows a flow (third step) for obtaining a double cavity filter DCF corresponding to two filters 14 _C from the plain filter rod PFR and the charcoal filter rod CFR.
The flow of FIG. 15 differs from the flow of FIG. 14 in that a filter row FA ′ is formed instead of the filter row FA when compared with the flow of FIG. As is clear from FIG. 15, in the filter row FA ′, spaces S corresponding to the cavities 44 described above are respectively secured between the double plane filter DPF and the double charcoal filter DCF.

Such a filter array FA ′ is also encased in the web 96 in the same manner, whereby a continuum _CC is formed. Thereafter, the continuous body C _D is cut into double cavity filter DCF, the individual double cavity filter DCF, and double plain filter DPF centrally disposed with intervening cavity 44 at each end of the double plain filter DPF And a charcoal filter element 22.

Further, FIG. 16 shows a flow (third step) for obtaining a double plane filter WPF corresponding to two filters 14 _P from the plane filter rod PFR. The double plane filter WPF is obtained by cutting the aforementioned plane filter rod PFR, and has a land 80 in the center.
One of the double dual filter DDF, the double cavity filter DCF and the double plane filter WPF described above is supplied as a double filter DF to the filter cigarette manufacturing machine together with the double cigarette DC. This manufacturing machine is supplied from the double filter DF and the double cigarette DC. Two filter cigarettes 10 are manufactured.

FIG. 17 shows a flow of manufacturing the filter cigarette 10 (fourth and fifth steps).
First, the double cigarette DC is cut equally and two cigarettes 12 are obtained from the double cigarette DC. A space is secured between the two cigarettes 12, and the double filter DF is supplied to this space.
The two cigarettes 12 are in close contact with both ends of the double filter DF, and the cigarette 12 and the double filter DF form an intermediate product I of the double filter cigarette DFC.

The intermediate product I is supplied with double chip paper DTP. This double chip paper DTP has a width twice that of the chip paper 16, and is obtained by cutting the web 98 into a predetermined length. As shown in Figure 17, when viewed evenly divided into two areas corresponding web 98 into individual tip paper 16, the respective regions of the web 98 filter 14 _D, to 14 _C, or 14 _P A row of vent holes 40 and a row of delivery holes 42 to be assigned are preformed mechanically or optically, and the rows of vent holes 40 and delivery holes 42 extend in the longitudinal direction of the web 98.

In this case, the vent hole 40 and the delivery hole 42 are formed in a process in which the web 98 is supplied toward the intermediate product I, or the web 98 including the vent hole 40 and the delivery hole 42 is the intermediate product I. Supplied towards
In FIG. 17, only one row of vent holes 40 and delivery holes 42 is shown in each region, but each region actually has two rows of vent holes 40 and delivery holes 42. (See FIG. 1). Further, glue is applied to the inner surface of the web 98 in advance so as to avoid the rows of the vent holes 40 and the delivery holes 42.

Therefore, if the double chip paper DTP supplied to the intermediate product I is wound around the intermediate product I, the double chip paper DTP integrally couples the two cigarettes 12 and the double filter DF. A double filter cigarette DFC is formed. At this time, the delivery holes 42 of the double chip paper DTP are positioned so as to communicate with both sides of the land 80 of the double filter DF and to each of the axial passages 32a of the double filter DF via at least one of the web 24 and the forming paper 28. Should be done. However, as described above, a part of the delivery hole 42 is allowed to communicate with the axial passage 32 b via at least one of the web 24 and the forming paper 28, so that the delivery hole 42 extends in the longitudinal direction of the axial passage 32. Since the axial passage 32 has a constant width along the longitudinal direction, the positioning of the delivery hole 42 is relatively easy.

Thereafter, the double filter cigarette DFC is equally cut at the center of the double filter DF, that is, at the center of the land 80, and formed into two filter cigarettes 10. The cutting of the land 80 provides the dam 38 described above to the filter 14 of each filter cigarette 10. If the land 80 is divided into two land portions 80a and 80b as described above (see FIG. 13), the land 80 is cut at the gap K between the land portions 80a and 80b.

Here, if the double filter DF is a double dual filter DDF, a filter cigarette 10 _A (see FIG. 1) having the filter 14 _D is formed. Further, the double filter DF is if double cavity filter DCF, the filter cigarette 10 _B having a filter 14 _C (see FIG. 4) is formed. Further, if the double filter DF is a double plane filter DPF, a filter cigarette 10 _C (see FIG. 5) having a filter 14 _P is formed. Thereafter, as shown in FIG. 17, the manufactured filter cigarette 10 is transported toward the packaging machine after the orientation is aligned.

As described above, the vent hole 40 and the delivery hole 42 are respectively formed in the web 98 at a stage before the dulb tip paper DTP is wound around the intermediate product I. However, as will be apparent from the following description regarding the manufacture of the filter 14 _D ′, the laser light is irradiated to the dulb chip paper DTP or the chip paper 16 in the state of the double filter cigarette DFC or the filter cigarette 10, and this laser light It is also possible to form the ventilation hole 40 and the delivery hole 42, respectively. In this case, the vent hole 40 and the delivery hole 42 extend from the tip paper 16 to the inner surface of the web 14 regardless of the presence or absence of the forming paper 28.

As is clear from the above description, the dams 38 of the filters 14 _D , 14 _C , and 14 _P are obtained by cutting the group G of lands 80 in the double filter DF, so that the filters 14 _D , 14 _C , In order for the dam 38 to be adjacent to the 14 _P suction end face 18, the group G of lands 80 must be accurately positioned in the center of the double filter DF.
Therefore, the rod manufacturing machine 48 of the present embodiment further includes a control device 100 that controls the position of the group G of lands 80 in the double plane filter DPF when forming the double plane filter DPF. Is schematically shown in FIG.

The control device 100 includes a land sensor 102 for optically detecting the land 80, and the land sensor 102 is interposed between the pair of corrugated forming rolls 72 and the wrapping section 50, for example, in the supply path of the filter tow 56. Has been placed. Such a land sensor 102 irradiates light from the lower side of the corrugated sheet 74 toward, for example, one longitudinal groove 76 having the land 80 as viewed in FIG. 7, while being reflected from the longitudinal groove 76 and the land 80. The reflected light is received, and the land 80 is detected based on the intensity of the reflected light. Here, since each land 80 is very small, it is preferable that the land sensor 102 irradiates the land 80 with laser light that can be easily narrowed down to a minute spot diameter.

Therefore, each time the land sensor 102 detects the land 80 of each group G, it periodically generates the detection signal _SD (first detection process), and these detection signals _SD are sent to the speed controller 104.
On the other hand, the cutting section 92 described above, the cutting signal S _C representing the cutting timing of the continuum C _P periodically occurs, these cut signal S _C is also sent to the speed controller 104. The speed controller 104 first enters the plain filter rod PFR based on the detection signal S _D , the cutting signal S _C , the distance between the land sensor 102 and the cutting section 92 and the feeding speed of the corrugated sheet 74 by the corrugating roll 72. actual position of each group G of land 80 included (actual position here is, strip C is determined based on the cutting position of the strip C _P when viewed from the group of lands 80 on the _P) is detected Is done. As a representative of the actual position of each group G, for example, the distance from the first cut surface in the plane filter rod PFR to the first group G is detected. In other words, here, when the double filter DF is cut from the plain filter rod PFR, the actual position of the group G of one land 80 included in the double filter DF is detected (second detection process). .

Thereafter, the speed controller 104 produces the actual position of the group G of lands 80 and the target position where the group G of lands 80 should be positioned in the double plane filter DPF (for example, the center position of the double filter DF, etc.). When the control signal S _X is generated, a control signal S _X is generated based on a deviation between the inner end of the delivery hole 42 and the suction end face 18 and a predetermined position where the dam 38 is to be positioned. _X is transmitted to the drive motor of the corrugating roll 72.
Therefore, the feed rate of the corrugated sheet 74 by the corrugated forming roll 72 is feedback controlled based on the control signal S _X (control process). Therefore, the change in the actual position of the group G of the land 80 with respect to the cutting position of the continuum C _P is to solve the deviation, consequently, the actual position of the group G of the land 80 in the double filter DF is the target position Maintained. FIG. 18 shows the flow of the feedback control described above.

The land sensor 102 described above can also be disposed between the wrapping section 50 and the cutting section 92 as shown by a one-dot chain line in FIG. In this case, since the lands sensor 102 will detect the land 80 in the continuum C _P, web 54 of the continuum C _P is limited to those that transmits a laser beam.

On the other hand, the filter cigarette 10 _D provided with the filter 14 _D ′ is a double filter cigarette obtained by wrapping an intermediate product I including the double dual filter DDF with a dulb tip paper DTP ′ in which the vent hole 40 and the delivery hole 42 are not formed. It is obtained by forming DFC ′ and then forming a row of vent holes 40 and a row of delivery holes 42 in the dulve tip paper DTP ′.
Needless to say, the feedback control described above is also performed in forming the double dual filter DDF for the filter 14 _D ′.
In this case, for example, a laser perforation machine 106 as shown in FIG. 19 can be used to form the vent hole 40 and the delivery hole 42, and this laser perforation machine 106 transfers the double filter cigarette DFC ′. It is arranged above the drilling position defined in the path.

The laser drilling machine 106 has a built-in laser generation source (not shown), and outputs four laser beams intermittently emitted from the laser generation source toward the double-filter cigarette DFC ′ dulve chip paper DTP ′. It has mouths 108a to 108d. These exit openings 108a to 108d are arranged at a predetermined interval in the axial direction of the double filter cigarette DFC ′. For example, of the exit openings 108a to 108d, the two exit openings 108a and 108c arranged at the center are the double filter. Laser light L ₁ perpendicular to the axial direction of the cigarette DFC ′ is intermittently emitted, while the remaining emission ports 108 a and 108 d are laser light L ₂ oblique to the axial direction of the double filter cigarette DFC ′. Are intermittently emitted so as to cross each other.
Since the functions required for the vent hole 40 and the delivery hole 42 are different as apparent from the above description, the laser generation source used for forming the vent hole 42 and the delivery hole 42, respectively, and the condensing of the laser light. The conditions, the intermittent emission interval of the laser light, and the like are often different from each other.

When the double filter cigarette DFC 'reaches the drilling position, the transfer of the double filter cigarette DFC' is temporarily stopped at the drilling position, while the double filter cigarette DFC 'rotates around the axis A at the drilling position. Is done. Thus, the laser beam L ₁ is dull blanking tip paper DTP 'column of vent holes 40 were formed respectively on the laser beam L ₂ Dar blanking tip paper DTP' respectively forming a column of the delivery hole 42.
If the laser beam L ₂ as described above only to intersect each other, without being restricted to the layout of the exit ports 108a ~ 108d, to form respective rows of the delivery hole 42 in the vicinity of and lands 80 on either side of the land 80 be able to.

Incidentally, if the individual filter cigarettes 10 _D obtained from the double filter cigarette DFC 'has two by two rows of vent holes 40 and the delivery hole 42, the laser beam L _1, L ₂ are each divided into two laser beams ing. Further, the above-described online laser drilling may be performed after the double filter cigarette DFC ′ is cut into individual filter cigarettes.

In the manufacturing method of the present invention, the continuum C (C _P , C _D or C _C) is cut at the group G of lands 80 to directly form the filter 14 (14 _P , 14 _D or 14 _C ) ( (Third step) Thereafter, the filter 14 and the cigarette 12 may be connected by the chip paper 16 (fourth step) to manufacture the filter cigarette 10 (10 _A , 10 _B or 10 _C ) ( (4th process).
In the manufacturing method of the present invention, after the filter 14 is directly formed (third step), the filter 14 is connected to both ends of the double cigarette DC via the chip paper 16 to form a double filter cigarette ( (4th process) Then, the method of cut | disconnecting a double filter cigarette in the center of a double cigarette (5th process), and manufacturing each filter cigarette may be sufficient.

The manufacturing method of directly forming the filter 14 as described above is equally applicable to the production of the filter cigarette 10 _D. In this case, the production method of the present invention, by cutting a continuous body C _D at a group G of the land 80 forms a filter 14 _D (third step), then a filter 14 _D and cigarettes 12 vents connect the paper that does not have a 40 and a delivery hole 42, and thereafter, the production of filter cigarettes 10 _D to form a vent hole 40 and the delivery hole 42 (fourth step).
Or, the production method of the present invention is to form a double filter cigarettes the ventilation hole 40 and the delivery hole 42 is formed from a respectively connected by paper at both ends to the filter 14 _D double cigarette DC (fourth step), the after cutting the double filter cigarette at the center of the double cigarette DC (fifth step), to produce the individual filter cigarettes 10 _D.

On the other hand, regarding the above-described feedback control related to the production of the plain filter rod PFR, the cutting timing of the continuous body may be controlled instead of the feeding speed of the corrugated sheet, or the feeding speed of the corrugated sheet and the cutting of the continuous body may be controlled. Both timings may be controlled.

In addition, as long as the effect of the present invention can be obtained, each component and each condition setting in each embodiment of the present invention described above can be combined individually and independently.

12 Cigarette 14 Filter 16 Chip paper 20, 46 Plain filter element 22 Charcoal filter element 24 Molded paper (filter packaging material)
26 Filter fiber bundle (filter material)
28 Wrapping paper (filter packaging material)
32 Axial passage 34 Corrugated outer peripheral surface 38 Dam 40 Vent hole 42 Delivery hole 44 Cavity 72 Corrugating roll 74 Corrugated sheet 76 Longitudinal groove 80 Land 100 Controller 102 Land sensor (first inspection process)
104 Speed controller (second inspection process, control process)
_CP continuum G Land group
DF double filter
FC filter cigarette
DFC, DFC 'double filter cigarette
DTP, DTP 'double tip paper
DDF double dual filter (double filter)
DCF double cavity filter (double filter)
DPF double plane filter (double filter)
PFR plain filter rod
CFR charcoal filter

Claims (8)

Cigarette,
A cylindrical filter arranged in tandem at the base end of the cigarette,
A filter core formed from a filter material and having a corrugated outer peripheral surface;
A filter wrapping material for wrapping the filter core;
It is defined between the filter wrapping material and the corrugated outer peripheral surface, has an opening end that extends in the axial direction of the filter and opens at the suction end surface of the filter, and mainstream smoke from the cigarette A plurality of axial passages leading towards
A filter provided in some of the axial passages and including a dam closing the open end;
Chip paper wound around the cigarette and the filter and connecting the cigarette and the filter,
Chip paper comprising a plurality of delivery holes arranged to be positioned in the oral cavity of the user together with the dam when smoking the cigarette, while communicating with the axial passage with the dam through the filter wrapping material; The filter cigarette characterized by comprising. The filter cigarette according to claim 1, wherein a distance between the delivery hole and the suction end face is within 8.0 mm. The filter cigarette according to claim 1 or 2, wherein the dam is provided in more than half of the axial passages. The chip paper further includes a plurality of ventilation holes in addition to the delivery hole, and the ventilation holes allow introduction of outside air into the filter. Filter cigarette. The filter cigarette according to any one of claims 1 to 4, wherein the filter further includes a cavity disposed between the vent hole and the axial passage. A manufacturing method for manufacturing the filter cigarette according to claim 1,
A corrugated sheet is continuously formed by a pair of corrugating rolls and fed out, and the corrugated sheet forms a plurality of longitudinal grooves forming one side of the corrugated sheet, and lands provided in some of the longitudinal grooves. The lands of each group are arranged in the width direction of the corrugated sheet and have a width corresponding to two of the dams, while the groups of lands are arranged at regular intervals along the longitudinal groove, The first step;
After the first step, a rod-shaped continuous body is formed from the corrugated sheet, the filter material and the filter wrapping material, and the continuous body is formed between the longitudinal groove of the corrugated sheet and the filter wrapping material. A second step having a conduit that serves as the axial passage of the filter;
After preparing the filter including the dam formed from one group of lands by cutting the continuum after the second step, the position of the group of lands is relative to the cutting position of the continuum. A third step of cutting the continuum so as to be in a predetermined position;
After the third step, there is a fourth step in which the cigarette and the filter are connected using tip paper, and the tip paper has the delivery holes to be assigned to the axial passages, respectively. A method for producing a filter cigarette characterized by that. The third step includes
The continuum is periodically cut to form a rod member including one of the land groups, and then a double corresponding to two of the filters including the rod member or a part of the rod member. Forming a filter, the double filter having one group of lands in the center of the double filter,
The fourth step includes
Cigarettes are respectively arranged at both ends of the double filter, and then a double chip paper having a width twice that of the chip paper is wound around the cigarette and the double filter, and a double corresponding to two of the filter cigarettes. Forming a filter cigarette, wherein the double tip paper is in a state having the delivery holes to be respectively assigned to the axial passages of the filters,
The filter cigarette according to claim 6, wherein the manufacturing method further includes a fifth step of cutting the double filter cigarette at the land in the double filter to form two filter cigarettes. Production method. The third step includes
A first detection process for detecting the group of lands and periodically generating a detection signal;
A second detection process for detecting the cutting position when viewed from the group of lands on the continuum based on the cutting timing and the detection signal of the continuum in the third step;
A control process for feedback control of at least one of the feeding speed of the corrugated sheet by the pair of corrugating rolls and the cutting timing of the continuum so as to eliminate the deviation between the cutting position and the predetermined position. A method for producing a filter cigarette according to claim 6 or 7.

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