TW201436721A - Filter cigarette and manufacturing method thereof - Google Patents

Abstract

A filter cigarette (10A) manufactured by the manufacturing method of the present invention comprises: a plurality of filter apertures formed in a plane filter (14); a plurality of paper openings (26) formed in a tip paper (16); a first annular groove (22) formed in the outer periphery of the plane filter (14), the first groove (22) being an example of constituting a connection path (20) which communicates the filter aperture (24) with the paper opening (26) between the plain filter (14) and the tip paper (16), the paper opening (26) being positioned to open in user's oral cavity during smoking the filter cigarette (10A).

Description

Cigarette with filter and manufacturing method thereof

The present invention relates to a cigarette with a filter and a method of manufacturing the same, and more particularly to a filter-attached cigarette in which a user can efficiently enjoy the flavor and taste of mainstream cigarettes of cigarettes, and a method of manufacturing the same.

When the cigarette with the filter is sucked, the mainstream smoke generated by the cigarette is supplied to the user through the filter, and the user can enjoy the flavor and taste of the mainstream smoke filtered by the filter (for example, refer to Patent Document 1). Further, the cigarette with the filter of Patent Document 1 has a plurality of vent holes in the outer paper connecting the cigarette and the filter, and the vent holes are distributed at intervals in the circumferential direction of the filter (circumferential direction, hereinafter referred to as Week direction).

When the cigarette with the filter is sucked, the vent hole introduces external air into the filter, and the introduced external gas dilutes the mainstream smoke in the filter. Therefore, a filter-attached cigarette having a vent hole provides a lighter smoking sensation to the user than a filter-attached cigarette having no vent hole.

[Advanced technical literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open No. 5-23158 (JP 199323258 A)

[Disclosure of the Invention]

When the cigarette with the filter is sucked, whether or not the vent hole is present, the filtered mainstream smoke is in the user's mouth from the suction end face of the filter toward the axis along the filter. Send it out. Therefore, mainstream smoke will only flow from the mouth end face toward the inside of the mouth, and will not spread mainstream smoke throughout the mouth. Therefore, the cigarette with the filter does not allow the user to enjoy the flavor and taste of the mainstream smoke efficiently.

An object of the present invention is to provide a filter-attached cigarette which can diffuse the mainstream smoke of a cigarette in a user's mouth during smoking, and the user can efficiently enjoy the flavor and taste of the mainstream smoke, and a manufacturing method thereof .

The above object can be attained by the filter-attached cigarette of the present invention comprising: a cigarette; a filter, a cylindrical filter arranged in series with the cigarette, comprising: a mouth end face, and a keeping interval a plurality of filter openings distributed in the circumferential direction of the filter and extending from the outer peripheral portion of the filter toward the inside of the filter; a tip paper wrapped around the cigarette and the filter to filter the cigarettes and the filter Connected to each other, including spaced intervals in the filter a plurality of paper openings extending in the circumferential direction and through the outer paper, the paper openings being located near the end face of the mouthpiece and opening in the mouth of the user when the cigarette is sucked; and the annular communication path existing in the outer paper and Between the outer peripheral portions of the filter, the paper opening and the filter opening are communicated with each other.

According to the cigarette with the filter, when the cigarette with the filter is sucked, the mainstream smoke of the cigarette passes through the filter and is sent out from the suction end face of the filter along the axis of the filter to the oral cavity of the user. . On the other hand, a part of the mainstream smoke flows through the filter opening to the communication passage, and is then radially sent out from the communication passage through the paper opening into the oral cavity of the user. Therefore, mainstream smoke will spread in the user's mouth.

Preferably, the distance between the paper opening and the end face of the suction port is 8.0 mm or less, and more preferably, the filter opening is formed as an inclined hole and has an outer end located at the outer peripheral portion of the filter and a cigarette side closer than the outer end. Inner end. If the filter opening is the above-mentioned inclined hole, the angle of inclination of the filter opening with respect to the axis of the filter will be smaller than 90°. Therefore, a part of the mainstream smoke flowing in the filter is smoothly guided to the communication passage through the filter opening, and the amount of mainstream smoke sent out from the communication passage through the paper opening to the oral cavity of the user increases. As a result, the spread of mainstream smoke in the user's mouth can be further promoted.

For example, the communication passage includes an annular first groove that is provided at the outer peripheral portion of the filter and that opens at the outer end of the filter opening, and the first groove allows communication with the paper opening. Alternatively, the communication passage includes an annular second groove formed on the inner surface of the outer paper and communicating with the paper opening, the second groove allowing communication with the outer end of the filter opening. In either case, with the fragrance of the filter When the smoke is being sucked, a portion of the mainstream smoke passing through the filter passes through one of the filter opening, the first recess and the second recess, and is sent out into the user's mouth through the paper opening.

On the other hand, the present invention also provides a method of manufacturing the above-described cigarette with a filter by winding a filter in series with a cigarette via an outer layer of paper.

The manufacturing method of the present invention includes: a first preparation step of preparing a filter having a filter opening; a second preparation step for preparing a communication passage when performing winding of the outer paper; and a first preparation step in the first preparation step In addition to the filter opening, the outer paper is additionally provided with a perforation step of paper opening.

In the above case, when the filter having the filter opening is connected to the cigarette via the winding of the outer layer paper, a communication path is formed between the outer layer paper and the outer peripheral portion of the filter. The paper opening may also be formed in advance on the outer paper by a perforating step or formed on the outer paper by a perforating step after the outer paper is wound.

For example, in the second preparation step, an annular first groove that serves as a communication passage in the outer peripheral portion of the filter or an annular second groove that serves as a connection passage is formed on the inner surface of the outer layer paper.

In either of the first groove and the second groove, the winding of the outer layer paper causes the communication passage to exist between the outer layer paper and the outer peripheral portion of the filter.

The filter-attached cigarette of the present invention and the method of manufacturing the same When the cigarette with the filter is sucked, the mainstream smoke of the cigarette is spread in the mouth of the user, and the user can enjoy the flavor and taste of the mainstream smoke efficiently.

10 _A ‧‧‧A cigarette with a filter

10 _B ‧‧‧A cigarette with a filter

10 _C ‧‧‧A cigarette with a filter

10 _D ‧‧‧A cigarette with a filter

12‧‧ ‧ Cigarettes

14‧‧‧Single filter (filter)

14 _E ‧‧‧ suction end face

16‧‧‧ outer paper

18‧‧‧Winding paper

20‧‧‧Connected pathway

22‧‧‧1st groove

23‧‧‧2nd groove

24‧‧‧Filter opening

26‧‧‧paper opening

28‧‧‧vents

30, 30a‧‧‧Double filter (filter)

32, 32a‧‧‧ single filter element (one part of the filter)

34‧‧‧ Charcoal filter element (one part of the filter)

36‧‧‧ Forming paper

38‧‧‧Filter rod making machine

40‧‧‧Covering section

42‧‧‧Packing tape

44‧‧‧Roll paper

45‧‧‧ Additive for plasticizer

46‧‧‧ speaker jet

48‧‧‧ horn guide

50‧‧‧ cut section

52‧‧‧ Shaped protrusions

54‧‧‧Transfer path

56‧‧‧Laser illumination device

58‧‧‧Laser light source

60‧‧‧ shots

62‧‧‧Roll paper

64‧‧‧Laser illumination device

66‧‧‧Laser shots

67‧‧‧Laser illumination device

68‧‧‧Filter rod making machine

69‧‧‧Laser illumination

70‧‧‧Filter rod making machine

72‧‧‧Roll paper

74‧‧‧Compression device

76‧‧‧ Groove forming roller

78‧‧‧Squeeze roller

80‧‧‧ Groove

82‧‧‧ Groove forming device (2nd preparation step)

84‧‧‧heat forming roller

A‧‧‧ axis

CF‧‧‧ Charcoal filter

CFR‧‧‧ Charcoal filter rod

C _P , C _C , C _D ‧‧‧ rod-shaped continuum

CP1, CP2‧‧‧ cut position

DC‧‧‧Two Groups of Cigarettes

DCF‧‧‧ Charcoal filter

DDF‧‧ long double filter

DFR, DFR'‧‧‧ double filter rod

DPF, DPF'‧‧‧ long single filter

DTP‧‧‧ long outer paper

PFR, PFR'‧‧‧ single filter rod

PR‧‧‧ Section

R‧‧‧ area

S1‧‧‧ single filter rod manufacturing steps (part of the first preparation step)

S2‧‧‧1st laser irradiation step (part of the first preparation step)

S5, S5a, S5b‧‧‧3rd laser irradiation step (perforation step)

S13‧‧‧ Groove forming step (2nd preparation step)

T‧‧‧ outer paper

Distance between the X‧‧‧ paper opening 26 and the suction end face 14 _E

Fig. 1 is a schematic view showing a cigarette with a filter according to a first embodiment of the present invention.

Fig. 2 is a schematic view showing a cigarette with a filter according to a second embodiment of the present invention.

Fig. 3 is a schematic view showing a cigarette with a filter according to a third embodiment of the present invention.

Fig. 4 is a schematic view showing a cigarette with a filter according to a fourth embodiment of the present invention.

Fig. 5 is a flow chart showing the manufacture of the cigarette with a filter according to the first and second embodiments.

Fig. 6 is a schematic view showing a filter rod manufacturing machine which performs the manufacturing step (S1) in Fig. 5.

Figure 7 is a schematic illustration of a single filter rod manufactured in the manufacturing step (S1).

Fig. 8 is a schematic view showing a laser irradiation apparatus for carrying out the first laser irradiation step (S2) in Fig. 5.

Fig. 9 is a schematic view showing a single filter rod in which a filter opening is formed by the first laser irradiation step (S2).

Figure 10 is a partial enlarged cross-sectional view of the single filter rod of Figure 9.

11(a) and 11(b) are schematic diagrams showing a laser irradiation apparatus for performing the third laser irradiation step (S5b) in Fig. 5, respectively, and forming a roll for forming an outer layer of paper. Schematic diagram of the paper opening row and the vent row.

Fig. 12 is a schematic view showing the manufacturing steps of the cigarette with the filter in Fig. 5.

Figure 13 (a) to Figure 13 (c) are the double filter rods in Figure 5 (dual Schematic diagram of the manufacturing steps of filter rod).

Fig. 14 is a flow chart showing the manufacture of the cigarette with a filter according to the second and fourth embodiments.

Fig. 15 is a schematic view showing a laser irradiation apparatus for carrying out the first laser irradiation step in Fig. 14.

Fig. 16 is a schematic view showing a laser irradiation device and a groove forming device for carrying out the second and third laser irradiation steps and the groove forming step in Fig. 14.

Figure 17 is a longitudinal sectional view of a roll paper of a long-side groove formed to form an inner surface of a web of outer paper.

Figure 18 is a schematic view of the inner face of the roll paper of Figure 17.

Fig. 19 is a schematic view showing a groove forming device in which a first groove is formed in a single filter rod or a two-stage filter rod in addition to the filter rod manufacturing machine.

1 is a view of the filter with a first embodiment of the present invention the cigarette 10 _A.

The filter attached to the cigarette 12 comprises a cigarette 10 _A, and the series of cylindrical filter is disposed at the proximal end 12 of the cigarette, in the case of this embodiment, the filter is a single filter 14, and the cigarettes 12 The single filters 14 are connected to each other by the winding of the outer paper 16. The single filter 14 has a suction port end face 14 _E formed of a filter fiber bundle (not shown) and a gas permeable take-up paper 18 that encloses the fiber bundle into a cylindrical shape.

Further, an annular communication passage 20 is formed between the outer peripheral surface of the single filter 14 as the outer peripheral portion of the filter and the outer layer paper 16. In the case of the first embodiment, the communication passage 20 includes an annular first groove 22. The first groove 22 is formed on the outer peripheral surface of the single filter 14 in the vicinity of the suction port end surface 14 _E , and extends over the entire circumference of the single filter 14. For example, the width and depth of the first groove 22 are in the range of 0.5 to 3.0 mm and 0.1 to 1.0 mm, respectively.

A plurality of filter openings 24 are formed in the single filter 14, and the filter openings 24 have an outer end located at the opening of the first recess 22 and an inner end positioned in the single filter 14. In the case of the first embodiment, as shown in Fig. 1, the inner end of the filter opening 24 is closer to the cigarette 12 side than the outer end of the filter opening 24.

Therefore, the filter opening 24 is not perpendicular to the axis A of the single filter 14, but forms an inclined hole that is inclined at a predetermined angle with respect to the axis A. In other words, assuming that the virtual frustum is coaxial with the axis A and its diameter gradually increases toward the mouth end face 14 _E , a plurality of filter openings 24 are located on the outer circumference of the imaginary truncated cone and are spaced apart from each other on the imaginary truncated cone. The direction of the week. Further, in the case of the first embodiment, the outer end of the filter opening 24 is opened at the bottom of the first recess 22, but may be opened on the inner wall surface of the first recess 22 on the side of the cigarette 12.

On the other hand, a plurality of paper openings 26 are formed in a region of the outer paper 16 overlapping the first recess 22, and the paper openings 26 are formed through the outer paper 16. The paper openings 26 are spaced apart in the circumferential direction of the single filter 14 and form an array of openings. The array of openings extends throughout the entire circumference of the single filter 14. Each of the paper openings 26 communicates with the communication passage 20, that is, the first recess 22, and is connected to the filter opening 24 via the first recess 22.

Further, when the paper was a hole 26 in the end face near the suction port 14 _E, 10 _A attached to the suction of the cigarette filter in the user's mouth open. For example, the distance X between the paper opening 26 and the suction end surface 14 _E is disposed within 8.0 mm, preferably within 5.0 mm, more preferably within 3.0 mm, and most preferably within 1.5 mm. Therefore, the distance between the groove wall of the first groove 22 and the suction port end face 14 _{E on the} side of the suction port end face 14 _E is of course shorter than the distance X.

As clearly shown in Fig. 1, the position of the paper opening 26 is closer to the suction end face 14 _E side than the outer end of the filter opening 24. Preferably, the paper opening 26 is also disposed on the outer circumference of the aforementioned imaginary truncated cone. Furthermore, the filter opening 24 and the paper opening 26 are provided in the same number, and it is preferable to extend the extension of the filter opening 24 from the outer end of the filter opening 24 toward the outer paper 16 . Paper openings 26 are arranged on the lines.

On the other hand, in the outer layer paper 16, a plurality of vent holes 28 are formed in addition to the paper opening 26, and the vent holes 28 are positioned closer to the cigarette 12 than the first grooves 22. Here, a distance of, for example, 10.0 mm or more is secured between the mouth end surface 14E and the vent hole 28. Thus, when the suction of the cigarette with the filter 10 _A, the vent holes 28 outside the user's mouth is open.

The vent holes 28 are also distributed in the circumferential direction of the single filter 14 at the same interval as the paper opening 24, and for example, a vent row is formed. The vent row also extends throughout the entire circumference of the single filter 14.

As is apparent from the above description, when the user holds the cigarette 10A with the filter and sucks, the paper opening 26 is positioned in the mouth of the user, and on the other hand, the vent 28 is exposed outside the oral cavity. In this state, if the user smokes, the mainstream smoke generated from the cigarette 12 is filtered while passing through the single filter 14, and then the filtered mainstream smoke is passed along the suction end face 14 _{E of} the single filter 14. The axis A of the single filter 14 is delivered into the oral cavity of the user.

In this type of smoking, external air flows into the single filter 14 through the vent holes 28, which will dilute the mainstream smoke in the single filter 14. Therefore, the diluted mainstream smoke is sent out of the user's mouth, and the user can enjoy a light smoking sensation.

On the other hand, a part of the mainstream smoke temporarily flows into the communication passage 20 through the filter opening 24, that is, in the first recess 22, and is then sent out from the first recess 22 through the paper opening 26 into the oral cavity of the user. . The paper opening 26 is distributed in the circumferential direction of the single filter 14 while the outer paper 16 is spaced apart, so that a part of the mainstream smoke is radially sent out into the oral cavity of the user. Therefore, mainstream smoke will spread well in the user's mouth.

Moreover, as previously mentioned, the filter opening 24 is inclined so that the mainstream smoke in the single filter 14 easily flows into the filter opening 24. Thus, the amount of mainstream smoke that is radially sent out into the mouth of the user increases. It can promote the spread of mainstream smoke in the user's mouth.

Further, as long as the paper opening 26 is disposed on the extension line of the filter opening 24, the mainstream smoke sent from the paper opening 26 into the oral cavity of the user can be directed in the oblique direction of the filter opening 24. The directivity of this mainstream smoke will further promote the spread of mainstream smoke in the user's mouth.

When smoking, as a result of the diffusion of mainstream smoke in the user's mouth as described above, even if the mainstream smoke is diluted, the user can enjoy the flavor and taste of the mainstream smoke efficiently.

FIG 2 through FIG 4 show a cigarette filter attached to the second to fourth embodiment 10 _B to 10 _D, these described below with respect to the filter cigarette of 10 _B to 10 _D.

In the case of explaining the cigarettes 10 _B to 10 _D to which the filter is attached, in order to avoid redundant explanation, in FIGS. 2 to 4, the same constituent elements as those of the cigarette with the filter already described are attached. The same reference symbol.

When the filter is attached to the second embodiment like state (FIG. 2) of the cigarette with the filter 10 _B and 10 _A comparison of the cigarette, the filter comprising a dual filter 30 in place of a single 14. The dual filter 30 has a single filter element 32 and a charcoal filter element 34 that are connected to each other via a wrap of the forming paper 36.

When the single filter element 32 is compared to the single filter 14, only the length is different. For example, the length of the single filter element 32 is about half of the single filter 14. On the other hand, when the charcoal filter element 34 is compared with the single filter element 32, it differs only in that it also contains activated carbon particles distributed in the filter fiber bundle.

In this case, there should be a communication passage 20 between the outer paper 16 and the outer peripheral portion of the double filter 30, which is formed between the outer paper 16 and the first groove 22 of the single filter element 32 via the forming paper 36, thus The forming paper 36 has gas permeability. For example, the gas permeability of the forming paper 36 is 10,000 coresta units (coresta unit: cm ³ ‧ min ^-1 ‧ cm ^-2 ‧ kPa) or more, preferably 30,000 coresta units or more.

Therefore, at the time of smoking, the mainstream smoke flowing out to the communication passage 20 of the double filter 30, that is, the mainstream smoke flowing out to the first recess 22, passes through the forming paper 36, and is similarly passed through the paper opening 26 to be used. In the mouth of the person.

The filter with the third embodiment (FIG. 3) and 10 _C with the cigarette filter of the first embodiment when 10 _A control cigarette, comprising a second annular groove 23 in place of the first recess The groove 22 is formed on the inner surface of the outer layer paper 16. The second groove 23 forms a communication passage 20 together with the outer peripheral surface (outer peripheral portion) of the single filter 14. Therefore, the outer end of the filter opening 24 is opened on the outer peripheral surface of the single filter 14, and communicates with the paper opening 26 via the second recess 23. In this case, with the filter of the cigarette 10 _C comprises non-single filter 14a of the first groove 22.

For example, the second groove 23 and the first groove 22 have a groove width of 0.5 mm to 3.0 mm, but have a depth of 0.1 to 0.5 mm. Further, when the depth of the second groove 23 is increased, an embossed pattern may sometimes appear on the outer layer paper 16.

When the filter is attached to the fourth embodiment (FIG. 4) and 10 _D with cigarette filter of the cigarette 10 _C controls, containing the same double duplex filter 30a and the filter 30 of FIG. 2 and mono-substituted Filter 14. In this case, the filter opening 24 is a single filter element 32a formed in the double filter 30a, and the outer end of the filter opening 24 is directly opened on the outer peripheral surface of the single filter element 32a. In this case, the filter opening 24 communicates with the paper opening 26 via the gas permeable forming paper 36 and the second groove 23 (communication path 20).

The filter-attached cigarettes 10 _B to 10 _{D of} the second to fourth embodiments of course have the same functions and advantages as those of the filter-attached cigarette 10 _{A of the} first embodiment.

Next, with respect of the method of manufacturing cigarette filter 10 _A to 10 _D will be described sequentially.

FIG. 5, the solid line represents a schematic block line with the manufacturing process of the filter cigarette of 10 _A.

First, the manufacturing step S1 of the single filter rod PFR will be described.

This manufacturing step S1 is carried out by the filter rod manufacturing machine 38 shown in Fig. 6, and includes a part of the first preparation step. The filter rod maker 38 includes a wrapping section 40 having an endless garniture belt 42. The packaging tape 42 travels in the direction of the arrow B in Fig. 6.

A web 44 for forming the take-up paper 18, and a filter tow T for forming a filter fiber bundle are respectively supplied to the packaging tape 42, the filter tow T being separated by a roll paper 44 is overlaid on the packaging tape 42. The filter tow T sequentially passes through the plasticizer addition device 45, the horn injection port 46, the horn guide 48, and the like before reaching the cladding section 40. add The adding device 45 adds a plasticizer (acetic acid glycerin) to the filter tow T, and the horn injection port 46 and the horn guide 48 form the filter tow T into a rod shape.

When the filter tow T and the web 44 pass through the wrapping section 40 together with the packaging tape 42, the web 44 is wrapped in the filter tow T by means of the packaging tape 42. Therefore, in the covering section 40, a rod-shaped continuous body C _P can be formed from the roll paper 44 and the filter tow T, and the continuous body C _P is sent out from the covering section 40. As will be apparent from the description below, the continuous body _CP is used to form the single filter 14.

Before the roll paper 44 reaches the cladding section 40, the web 34 is coated with a connection paste for following the web 44 and the filter tow T, and when the two sides of the web 44 overlap each other, the coating is used to continue The seam paste of the two sides.

Further, in addition to the above-described connection paste and seam paste, a cross-cut paste may be applied to the roll paper 44, which is a cross-cut paper 44 and is periodically arranged along the longitudinal direction of the roll paper 44. . The effect of such a cross-cutting paste will be understood from the description below.

Next, the continuum C _P is cut into the single filter rod PFR by cutting the section 50. Here, in order to simplify the following description, it is assumed that the single filter rod PFR has four times the length of the single filter 14.

FIG 6 is a filter rod making machine 38 while the C _P of the continuous molding body will remain at a predetermined interval along the longitudinal direction of the continuous body C _P on the outer peripheral surface of the C _P continuum forming the first groove 22 (the second preparation step).

A circle D of Fig. 6 shows a partial longitudinal section of the packaging tape 42. As indicated by the longitudinal section of the packaging strip 42, the packaging strip 42 has a plurality of shaped projections 52 on the outside of the packaging strip 42, the forming projections 52 being It extends in the width direction of the packaging tape 42.

Only two forming protrusions 52 forming a group are formed in the circle D, and the forming protrusions 52 are adjacent to each other at a predetermined interval in the longitudinal direction of the packaging tape 42. Such a group of the formed projections 52 is disposed at a position spaced apart from the longitudinal direction of the packaging tape 42.

If the packaging tape 42 has the above-described forming protrusion 52, as described above, when the roll paper 44 forms a continuous body C _P together with the filter tow T by the packaging tape 42, the first groove can be formed by the forming protrusion 52 in the continuous body C _P . twenty two.

The circle E in Fig. 6 is schematically shown in the cross section of the entrance portion of the cladding section 40, that is, the tongue tip (tong). As indicated by the circle E, the wrapping tape 42 first causes the web 44 to form a U-shape that can be wrapped into the lower portion of the filter tow T.

Next, the packaging tape 42 overlaps both side edges of the roll paper 44 at the upper portion of the filter tow T, and forms a continuous body C _P . In this case, the package 42 formed with a projection 52 is pushed into the filter tow with the paper 44 T, C _P whereby continuous body 22 is formed a first groove.

In addition, when the filter tow T and the web 44 travel together with the wrapper 42 within the tongue tip of the wrap section 40, the wrapper 42 will compress the compressive filter tow T from the filter tow T via the roll paper 44. The entire circumference is applied to the filter tow T, which is indicated by the arrow F in the circle E.

Further, in order to easily form the first recess 22, steam and air are sequentially supplied to the cladding section 40. The vapor heats the filter tow T to increase the thermoplasticity of the filter tow T. On the other hand, the air contributes to the rapid removal of moisture adhering to the continuous body C _P due to condensation of the vapor.

Figure 7 is a single filter manufactured by the above filter rod manufacturing machine 38. Bar PFR. As shown in Fig. 7, when the single filter rod PFR is divided into two regions R from the center in the longitudinal direction, each of the regions R has a pair of first grooves 22.

Here, in the case where the roll paper 44 is coated with the cross-cut paste, the roll paper 44 and the filter tow T are adhered to each other by the cross-cut paste at the bottom of each of the first grooves 22 and the groove walls of both of them. This cross-cutting paste helps maintain the shape of the first recess 22.

Further, the roll paper 44 is not necessarily required at the time of molding the single filter rod PFR. In this case, the single filter rod PFR (single filter 14) forms an uncoated filter rod having an outer peripheral surface formed by the filter tow itself. When the uncoated filter rod and the first recess 22 are formed, the vapor and air are indispensable for the supply of the cladding portion 40.

Next, the single filter rod PFR is transferred along the transfer path 54, and the first laser irradiation step S2 is performed during the transfer. This first laser irradiation step S2 is carried out by the laser irradiation device 56 schematically shown in Fig. 8. The laser irradiation device 56 includes a laser light source 58 that intermittently generates laser light L, and two pairs of injection ports 60. Further, Fig. 8 shows only a pair of the ejection openings 66 of the two pairs of ejection openings 60, and only a part of the single filter rod PFR is shown.

The pair of injection ports 60 emit the laser light L of the laser light source 58 in a pair of first grooves 22 included in one of the single filter rods PFR. Here, the laser light L is obliquely intermittently irradiated with respect to the axis of the single filter rod PFR, that is, the axis A of the single filter 14, so as to intersect each other as shown in Fig. 8.

Further, the other pair of ejection openings are laser light L that intermittently illuminates the laser light source 58 in the same manner in the pair of first grooves 22 included in the other region R of the single filter rod PFR.

When the laser light L is intermittently irradiated as described above, the transfer of the single filter rod PFR is stopped, and in this state, the single filter rod PFR is rotatable about the axis A. Therefore, as shown in Fig. 9, in each of the first grooves 22 of the single filter rod PFR, an oblique filter opening 24 is formed each time the laser light is irradiated onto the first groove 22. The filter opening 24 thus formed is distributed in the circumferential direction of the first recess 22. In the case of the present embodiment, as shown in Fig. 10, each of the filter openings 24 has an outer end that is open at the bottom of the first recess 22, and the outer ends are arranged at intervals in the circumferential direction of the first recess 22. . The first laser irradiation step S2 corresponds to a part of the first preparation step when the single filter rod PFR is regarded as the single filter 14.

After a first embodiment of a laser irradiation step S2, the single filter rod manufacturing PFR supplied at step 10 _A step S3 embodiment of a filter attached to the cigarette.

In Fig. 9, the two-dotted broken line indicated by the single filter rod PFR represents three cut positions at which the single filter rod PFR is to be cut in the manufacturing step S3. The central cut-off position CP1 divides the single filter rod PFR into two double-length single filter DPFs, which respectively correspond to the aforementioned two regions R.

The remaining two cut positions CP2 divide the corresponding double-length single filter DPF into two sections PF, and each section PF corresponds to a single filter 14, respectively. Therefore, the cutting position CP2 is a position that defines the suction port end face 14 _E of the single filter 14.

Here, the "double" of the double-length single filter DPF means that the double-length single filter DPF has twice the length of the single filter 14.

Therefore, when focusing on the pair of first recesses 22 of the double-length single filter DPF, as clearly shown in Fig. 9, the filter openings 24 formed in the first recesses 22 are inclined in opposite directions to each other. And arranged symmetrically around the cutting position CP2.

On the other hand, as shown in Fig. 5, a roll paper 62 for forming an outer layer paper (TP) 16 (step S4) having a double width of the outer paper 16 is prepared. For example, the roll paper 62 is prepared in the form of a roll, and is sent out from the roll toward the step of performing the above-described manufacturing step S3. In the delivery process, the second laser irradiation step S5a and the third laser irradiation step S5b are applied to the roll paper 62. The paper opening 26 is formed in the roll paper 62 by the second laser irradiation step S5a, and the vent hole 28 is formed in the roll paper 62 by the third laser irradiation step S5b.

For example, the laser irradiation device 64 shown in Fig. 11(a) is a second laser irradiation step S5a and includes two laser emission ports 66. The laser emission ports 66 are disposed in the width direction of the roll paper 62 at a distance from each other, and intermittently irradiate the laser light toward the both side edges of the roll paper 62. Therefore, after the roll paper 62 passes through the laser irradiation device 64, as shown in the eleventh (b), two rows of parallel vent holes 28 are formed on the both side edges of the roll paper 62 due to intermittent irradiation of the laser light.

On the other hand, a laser irradiation device 67 is disposed downstream of the laser irradiation device 64. The laser irradiation device 67 performs the third laser irradiation The shooting step S5b includes two laser irradiation ports 69. The laser irradiation ports 69 are disposed in the width direction of the roll paper 62 at a distance from each other, and intermittently irradiate the laser light toward the center portion of the roll paper 62. Therefore, after the roll paper 62 passes through the laser irradiation device 67, as shown in FIG. 11(b), two rows of parallel paper openings 26 are formed in the central portion of the roll paper 62 due to intermittent irradiation of the laser light.

Therefore, when the third laser irradiation step S5b regards the roll paper 62 as the outer layer paper 16, it is a perforation step in which the paper opening 26 is provided in the outer paper T.

Further, the laser irradiation device 67 may be disposed upstream of the laser irradiation device 64. Further, the paper opening 26 and the vent hole 28 may be formed mechanically without using laser light.

Then, in Fig. 5, in the next cutting step S6, the roll paper 62 is cut at a predetermined length, thereby forming a double tip paper DTP having an outer paper 16 Double the width.

Further, the second laser irradiation steps S5a, S5b may also be performed in the process of forming the roll of the roll paper 62, that is, when it is offline. In this case, the roll paper 62 having the two rows of paper openings 26 and the two rows of the vent holes 28 in advance is sent toward the step of performing the manufacturing step S3, and the cutting step S6 is performed in the process.

The step of carrying out the manufacturing step S3 is to supply a double cigarette DC from the supply step S7 in addition to the aforementioned double outer layer paper DTP and the double long single filter rod PFR.

Fig. 12 is a view schematically showing the processing flow of the double outer layer paper DTP, the single filter rod PFR, and the double long cigarette DC in the manufacturing step S3.

The double-length cigarette DC has a length of two cigarettes 12 . The double-length cigarette DC is equally cut during its transfer process, and two cigarettes 12 are formed from the double-length cigarette DC. Then, a predetermined space can be secured between the cigarettes 12.

On the other hand, the single filter rod PFR is equally cut at the cutting position CP1, and two double-length single filters DPF (double plain filter) are formed from the single filter rod PFR (see FIG. 9). The double-length single filters DPF are arranged in a neat row, and one space is arranged in each of the two cigarettes 12. Next, the two cigarettes 12 are tightly joined at both ends of the double-length single filter DPF, which form an intermediate product I of a double-dose cigarette DFC (double filter cigarette).

Next, the aforementioned double-length outer paper DTP is supplied toward the intermediate product I, and the intermediate product I is wound. Therefore, the winding of the double length outer layer DTP forms a double-length filter-attached cigarette DFC that integrally combines the two cigarettes 12 with the double-length single filter DPF.

Next, the cigarette DFC with the filter attached to the double length is equally cut at the cutting position CP2 (see Fig. 9) of the double-length single filter DPF, and two cigarettes are formed from the cigarette DFC with the filter attached to the double length. Cigarette 10 _A with filter (refer to Figure 1).

Further, in FIG. 12, the paper opening of the first groove 22 and the filter opening 24, the roll paper 62, and the double-length outer paper DTP which the single filter rod PFR and the double-length single filter DPF have are omitted. 26 and vents 28. Further, before the double-length outer layer paper DTP is wound around the intermediate product I, the paper opening 26 and the vent hole 28 are coated on the inner surface of the double-length outer paper DTP without being described.

Continued and will be described with the manufacturing method for the filter cigarette of 10 _B.

10 _B with the manufacturing method of a cigarette filter in addition to the solid line in FIG. 5 in a block and the dotted line box together. In this case, there is a cutting step S8 of the single filter rod PFR between the first laser irradiation step S2 and the manufacturing step S3, and the single filter rod PFR is cut into double length by the cutting step S8. The single filter DPF', which is equivalent to the two aforementioned single filter elements 32 (refer to Fig. 2).

Therefore, the double-length single filter DPF' is as shown in Fig. 9, which is shorter than the aforementioned double-length single filter DPF. Therefore, the manufacturing step S1 herein is a single filter rod PFR in which two parts of the double-length single filter DPF' are formed.

Next, the double-length single filter DPF' is supplied toward the step of manufacturing the two-stage filter rod DFR in the manufacturing step S9.

On the other hand, 10 _B in the manufacture of cigarettes with the filter, in order to form the charcoal filter (charcoal filter) 34 element, a charcoal filter rod prepared CFR, which may be a charcoal filter rod by CFR 5. FIG. The manufacturing step S10 is manufactured.

This manufacturing step S10 is carried out using the same filter rod manufacturing machine 68 as the filter rod manufacturing machine 38 shown in Fig. 6. When the filter rod manufacturing machine 68 is compared with the filter rod manufacturing machine 38, the following is as follows. The difference.

The filter rod maker 68 supplies charcoal particles to the filter tow T during the process in which the filter tow T is transferred toward the cladding section 40. The wrapping tape 42 of the covering section 40 does not have the aforementioned forming protrusion 52, the filter The rod maker 68 does not require the supply of the aforementioned vapor and air to the cladding section 40.

Thus, the cladding portion 50 and the cutting section 40 will form a continuous body C _C respectively and a charcoal filter rod continuum CFR instead of C _P and a single filter rod PFR. The charcoal filter rod CFR comprises charcoal particles uniformly distributed in the filter tow T, that is, in the filter fiber bundle.

Then, in the next cutting step S11, the charcoal filter rod CFR is cut into a double charcoal filter DCF (double charcoal filter). The double length charcoal filter DCF has twice the length of the charcoal filter element 34 (refer to Fig. 2) and is supplied to the step of performing the manufacturing step S9.

In the manufacturing step S9, a double filter rod DFR can be formed from the double length single filter DPF' and the double length charcoal filter DCF. For example, in the manufacturing step S9, the same filter rod manufacturing machine 70 as that of the filter rod manufacturing machine 38 of Fig. 6 is used. When the filter rod manufacturing machine 70 is compared with the filter rod manufacturing machine 38, the following differences are made. .

The filter rod manufacturing machine 70 transfers the filter row FA shown in FIG. 13(a) toward the cladding section 40 instead of the filter tow T. The filter column FA includes a double length single filter DPF' and a double length charcoal filter DCF which are alternately arranged in the column direction.

On the other hand, the roll paper 72 for forming the forming paper 36 is supplied in the covering section 40, instead of forming the roll paper 44 of the take-up paper 18. Therefore, as shown in (b) of Fig. 13, the covering section 44 forms a continuous body C _{D which is} wrapped in the filter row FA by the roll paper 72. Next, the cutting section 50 cuts the continuous body C _D at the cutting position indicated by a one-dot chain line in (b) of Fig. 13, and forms the double filter rod DFR shown in Fig. 13(c).

Therefore, the double filter rod DFR includes: a double-length charcoal filter DCF disposed at a center thereof, a double-length single filter DPF′ disposed at both ends of the central double-length charcoal filter DCF, and respectively respectively Single filter DPF' adjacent to the charcoal filter CF. The charcoal filter CF is obtained by equally cutting the double-length charcoal filter DCF, and corresponds to the aforementioned charcoal filter element 34.

Next, the double filter rod DFR is used in place of the single filter rod PFR in the above-described manufacturing step S3. Therefore, as shown in Fig. 12, the double-length filter DFC can be manufactured by using a double double filter (DDF) obtained by equally cutting the double filter rod DFR. The filter DFC of the cigarette contains the double length double filter DDF.

The double length double filter DDF is equivalent to two parts of the aforementioned double filter 30. Further, the process of forming such a double-length double filter DDF is as shown in the foregoing description in order to provide a second preparation step of the communication passage 20.

Then, with the long times of the filter cigarette DFC times longer duplex filter DDF center cut, with the filter cigarette DFC is formed from two times as long as with the cigarette filter 10 _B (refer to FIG. 2) .

Next, a method of manufacturing the filter-attached cigarette 10 _C according to the third embodiment will be described.

Fig. 14 is a view schematically showing the manufacturing flow of the cigarette 10 _{C to which} the filter is attached. When the process of the manufacturing method of a cigarette filter with 10 _C and with the cigarette filter of 10 _A (solid line of FIG. 5 with reference to block) control, following the different points.

A method of manufacturing a cigarette with a filter containing 10 _C manufacturing step S12 in place of the manufacturing steps S1, on the other hand, for example, comprising a recess between the third laser irradiation step and the cutting step S6 embodiment S5b forming step S13.

The manufacturing step S12 is a filter rod manufacturing in which the forming projection 52 for forming the first recess 22 from the filter rod manufacturing machine 38 shown in Fig. 6 and the supply of vapor and air to the cladding portion 40 are omitted. Implemented by machine.

In this case, the single filter rod PFR' without the first recess 22 is formed in the manufacturing step S12. Therefore, as shown in Fig. 15, in the next first laser irradiation step S2, the filter opening 24 is formed in the single filter rod PFR' by the laser irradiation device 56 (part of the first preparation step). Further, in Fig. 15, the laser irradiation device 56 and the single filter rod PFR' are also only partially shown as in the case of Fig. 8.

The groove forming step S13 is carried out, for example, using the pressurizing device 74. As shown in Fig. 16, the pressurizing device 74 is, for example, disposed at the laser irradiation device 67 and at the cutting position of the cutting step S6 of the roll paper 62. between. The pressurizing device 74 has a groove forming roller 76 and a pressing roller 78. The groove forming roller 76 and the pressing roller 78 are disposed via the roll paper 62. When the roll paper 62 passes between the groove forming roller 76 and the pressure roller 78, the pressing device 74 partially compresses the roll paper 62, and as shown in Figs. 17 and 18, forms on the inner surface of the roll paper 62. Two longitudinal direction grooves 80. The longitudinal direction grooves 80 are disposed in the central region as viewed in the width direction of the roll paper 62.

Here, the two longitudinal direction grooves 80 are respectively overlapped with the two rows of paper openings 26 which have been formed on the roll paper 62 (refer to Fig. 18). Therefore, the double-length outer paper DTP obtained by cutting the roll paper 62 respectively has a part of two long-side direction grooves 80 which are respectively formed to be formed inside the double-group outer paper DTP. The aforementioned two second grooves 23 are provided. Therefore, when the groove forming step S13 regards the roll paper 62 as the outer layer paper 16, it corresponds to the second preparation step for providing the communication passage 20 which can be formed from the second groove 23 as described above.

If the single filter rod PFR' and the double outer layer paper DTP are used for the manufacture of a cigarette DFC with a filter attached to the filter (refer to Fig. 12), the double-length cigarette DFC with the filter manufactured here will Contains two cigarettes 10 _C with a filter (see Figure 3). Next, the cigarette DFC with the filter attached to the filter is equally cut, and the individual cigarette 10 _C with the filter can be obtained from the cigarette DFC with the filter attached.

Next, a method of manufacturing the filter-attached cigarette 10 _D (see FIG. 4) according to the fourth embodiment will be described.

10 _D of making a cigarette with a filter in the manufacturing process shown in FIG. 14, block was added dash-dotted line in FIG. 5 is described, i.e. the cutting step S8, the step of manufacturing a dual filter rod DFR of S9, a manufacturing step S10 of the charcoal filter rod CFR, and a cutting step S11. Thus, with the filter of the cigarette 10 _D can be manufactured in the same manner as with the filter cigarette of 10 _c. Further, in this case, as will be apparent from the above description, the single filter element 32a (see FIG. 4) can be obtained from the single filter rod PFR' manufactured by the manufacturing step S12, and will not be described again.

Here, when a filter-attached cigarette of a comparative example in which the filter opening 24 and the paper opening 26 form a common opening is considered, and the manufacturing method of the filter of the comparative example is not required for filtering The communication passage 20 in which the opening 24 and the paper opening 26 communicate with each other. However, in this case, the laser light used for forming the common opening must also use the outer layer paper 16 (rolled paper) having a density larger than that of the take-up paper 18 (roll paper 44) and the forming paper 36 (roll paper 72). 62) Opening the hole. Therefore, the formation of a common opening requires a powerful laser light.

The use of such powerful laser light not only makes it possible to generate burnt black on the opening edge of the common opening formed on the outer paper 16, but also increases the amount of dust generated by the formation of the common opening, and thus sometimes the product is produced. The rate will decrease.

Further, if the common opening is such that the filter opening 24 is an inclined hole, the laser light must be obliquely irradiated to the cigarette with the filter of the comparative example (or the cigarette with the filter attached) (refer to Fig. 8). , Figure 15). In this case, if the roundness of the cigarette with the filter of the comparative example is low, the outer film 16 is caused by the variation of the distance between the ejection opening of the laser light and the cigarette with the filter of the comparative example. The common open hole column is snaked. Because the snake line sometimes also reduces the yield of the product.

However, 10 _A to 10 _D and the manufacturing method of a cigarette with a filter according to the present embodiment does not include the above-described inconveniences with the filter cigarette of the Comparative Example and the manufacturing method has.

That is, according to the present embodiment, the filter opening 24 and the paper opening 26 are formed by the first and second laser irradiation steps S2 and S5b, respectively. The laser light used in the formation of the filter opening 24 and the paper opening 26 does not require a strong power. Therefore, the amount of blackening and dust generated accompanying the formation of the filter opening 24 and the paper opening 26 can be greatly reduced.

The laser light for forming the paper opening 26 is only required to be opened in the outer paper 16, so that the laser light requires less power than the laser light for forming the filter opening 24. Therefore, no burnt black is generated at the opening edge of the paper opening 26.

On the other hand, even if burnt black is generated at the opening (outer end) of the filter opening 24, the burnt black can be hidden by the outer layer paper 16 and is not exposed to the outside. Furthermore, the column occur even meandering of the filter openings 24, the meandering can be hidden by an outer sheet 16, and therefore will not destroy the 10 _A to 10 _D with the appearance of the cigarette filter.

Further, the paper opening 26 is formed in the roll paper 62 so that the rows of the paper openings 62 do not meander on the outer paper 16.

Further, since the communication path 20 exists between the outer layer paper 16 and the filter (14, 32, 32a), the paper opening 26 which is opened in the outer layer paper 16 and the filter opening in the filter opening are opened. With 24 communication, it is easy to position the paper opening 26 and the filter opening 24 in the axial direction of the filter.

Further, as will be described later, the step of forming the perforation of the paper opening 26 is carried out in the case of the cigarette DFC with the filter attached or the cigarette FC with the filter attached thereto, and the paper opening 26 can be easily formed. The opening 26 is in communication with the filter opening 24.

The present invention is not limited to the filter-attached cigarettes 10 _A to 10 _{D of the} above embodiment, and the method of manufacturing the same-attached cigarette.

For example, in the case of the filter-attached cigarette of the present invention, the filter opening 24 is not limited to the inclined hole, and may be a hole perpendicular to the axis A, and the vent hole 28 is not necessarily necessary. Further, the communication passage 20 of the present invention may be formed by both the first recess 22 and the second recess 23.

Further, the filter-attached cigarette of the present invention may comprise a double filter or a triple filter containing adsorbent or perfume particles in place of the charcoal particles. The three filter has, for example, a single filter element, a charcoal filter element comprising charcoal particles, and a third filter element containing adsorbent or perfume particles.

On the other hand, the following modifications can be considered in the manufacturing method of the present invention.

For example, the groove forming device 82 may be used outside the filter rod maker 38 when the single filter rod PFR forms the first groove 22. In this case, as shown in Fig. 19, the groove forming device 82 has, for example, a pair of heated forming rollers 84, which are used when the single filter rod PFR' having no grooves passes between the heating forming rollers 84. The filter rods PFR' respectively form grooves corresponding to the first grooves 22 shown in Fig. 7.

Further, the groove forming device 82 is not limited to the single filter rod PFR' having no groove, and the groove corresponding to the first groove 22 may be formed in the same manner as the double filter rod DFR' having no groove. In this case, when the groove forming device 82 regards the single filter rod PFR' or the double filter rod DFR' as a filter, the second preparation step is performed.

Furthermore, the second and third laser irradiation steps shown in Fig. 14 Steps S5a, S5b may also be performed between the groove forming step S13 and the cutting step S6.

Finally, the step of forming the perforation of the paper opening 26 can also be carried out in a double-length cigarette DFC with a filter attached or a cigarette FC with a filter attached thereto. In this case, the laser irradiation device 67 targets the communication passage 20 (the first recess 22 or the second recess 23) of the cigarette DFC with the filter attached to the filter or the cigarette FC with the filter attached thereto. The double-length outer paper DTP or the outer paper 16 is intermittently irradiated with laser light. At this time, as can be understood by referring to Figs. 8 and 15, the cigarette DFC with the filter attached or the cigarette FC with the filter is of course rotated about the axis A.

Further, at this time, the laser light is vertically irradiated with respect to the axis A of the cigarette DFC to which the filter is attached or the cigarette FC (filter) to which the filter is attached, so that the paper opening 26 on the outer paper 16 is opened. The hole column does not snake.

Further, since the paper opening 26 is formed through the take-up paper 18 and the forming paper 36, the air permeability of the take-up paper 18 and the forming paper 36 can be freely selected.

Further, as long as the combination of the effects of the present invention is obtained, the respective constituent elements and the respective condition settings of the respective embodiments of the present invention described above can be individually and independently combined.

10 _A ‧‧‧A cigarette with a filter

12‧‧ ‧ Cigarettes

14‧‧‧Single filter (filter)

14 _E ‧‧‧ suction end face

16‧‧‧ outer paper

18‧‧‧Winding paper

20‧‧‧Connected pathway

22‧‧‧1st groove

24‧‧‧Filter opening

26‧‧‧paper opening

28‧‧‧vents

A‧‧‧ axis

Claims (9)

A cigarette with a filter, comprising: a cigarette; a filter, a cylindrical filter disposed in series with the cigarette, comprising: a suction port end, and a circumferential interval distributed in the filter, and a plurality of filter openings extending from the outer peripheral portion of the filter toward the inside of the filter; an outer layer of paper wrapped around the cigarette and the filter, and an outer layer of the cigarette and the filter connected to each other, including a spacing interval a plurality of paper openings distributed in the circumferential direction of the filter and extending through the outer layer of paper, the paper opening being located near the end face of the mouthpiece, and opening in the mouth of the user when the user sucks the cigarette; And an annular communication passage is provided between the outer layer paper and the outer peripheral portion of the filter, and the paper opening and the filter opening are communicated with each other. The cigarette with a filter according to the above aspect of the invention, wherein the distance between the paper opening and the end face of the suction port is within 8.0 mm. The filter-attached cigarette according to claim 1 or 2, wherein the filter opening is formed as an inclined hole and has an outer end located at the outer peripheral portion of the filter, and a ratio The outer end is further to the inner end of the aforementioned cigarette side. Attached as described in any one of items 1 to 3 of the patent application scope In the cigarette of the filter, the communication passage includes: an annular first groove that is provided at an outer peripheral portion of the filter and that has an outer end opening of the filter opening, and the first groove is allowed to be The paper opening is connected. The filter-attached cigarette according to any one of claims 1 to 3, wherein the communication passage includes: a ring formed on an inner surface of the outer layer paper and communicating the paper opening The second groove is configured to allow communication with the outer end of the filter opening. A method for producing a cigarette with a filter, which is a method for manufacturing a filter-attached cigarette in which a filter is connected in series via a wrap of outer layer paper, and is characterized in that it is provided with a filter opening a first preparation step of the filter; a second preparation step prepared to provide the communication passage when the outer paper is wound; and the filter opening in the first preparation step The outer paper has a perforating step of the aforementioned paper opening. The method for producing a cigarette with a filter according to the sixth aspect of the invention, wherein the second preparation step provides an annular first groove in which the communication passage is formed in the outer peripheral portion of the filter. The method for producing a cigarette with a filter according to claim 6, wherein the second preparation step provides an annular second groove in which the communication passage is formed on the inner surface of the outer layer paper. The method for producing a cigarette with a filter according to the invention of claim 6, wherein the step of piercing is to form the paper opening in the outer layer of paper after the winding of the outer layer of paper is completed.