HK1112375B - Machine for producing stick-like smoking articles - Google Patents

Description

Rod-shaped smoking article manufacturing machine

Technical Field

The present invention relates to a manufacturing machine for manufacturing rod-shaped smoking articles such as cigarettes and substitute cigarettes, and more particularly, to a manufacturing machine capable of adding an additive to a smoking material for rod-shaped smoking articles.

Background

For example, japanese patent No. 3472591 discloses a substitute cigarette which contains a fuel component and smoke generating dust, and the fuel component and the smoke generating dust are formed into a rod shape. Upon smoking the substitute cigarette of the publication, the fuel component is first ignited. The combustion heat of the fuel component heats the smoke generating debris, and the heated smoke generating debris generates smoke which is inhaled by the smoker through the filter of the substitute cigarette.

The smoke generating source disclosed in the above publication is produced in the following order.

First, a filler in which a smoke generating substance is added to a particulate smoking material is adjusted. This filler material is supplied to a manufacturing machine together with a wrapping material, i.e. a web, which wraps the filler material around the cigarette-producing rod. Thereafter, the smoke generating rod is cut at every predetermined length, thereby obtaining each smoke generating rod.

Since the filler is prepared outside the manufacturing machine, a preparation machine for adjusting the filler is required in addition to the manufacturing machine in the manufacture of the substitute cigarette, and the manufacturing equipment of the substitute cigarette is a large-scale equipment.

For the above reasons, a solution containing an additive such as a smoke generating substance is prepared and added to a smoking material in a manufacturing machine.

The addition of the solution of the smoking material can be carried out by the techniques disclosed in, for example, Japanese patent laid-open Nos. 53-18800 and 3209985. The former technique is to discharge a solution such as water from the inner surface of a jig in a manufacturing machine to prevent a colloidal film from being formed on the inner surface of the jig. The jig cooperates with a forming bed and garniture belt (ガニチャテ - プ) of the machine to compression form the smoking material into rod form before it is wrapped into the paper web.

On the other hand, in the latter technique, when the smoking material is layered and adsorbed on a suction belt (サクションバンド) of a manufacturing machine, a liquid flavorant is injected into the material layer.

However, in both techniques, there is only one injection position for the additive in the transfer path of the smoking material, and therefore, the additive cannot be efficiently added to the smoking material that is traveling at high speed in the transfer path.

In addition, in the former technique, the liquid additive discharged from the jig is contained only in the upper portion of the rod-shaped smoking material. Therefore, when the rod-shaped smoking material is wrapped in the web and the smoke generating rod is molded, the lap portion formed by overlapping the both side edges of the web is excessively wetted with the liquid additive. Therefore, poor adhesion of the overlapping portion is likely to occur, and stable molding of the rod-like smoking article as the smoke generating rod cannot be achieved.

In addition, when the latter technique is employed, a liquid additive is impregnated into the material layer in the process of forming the material layer on the suction belt. Therefore, the weight of the material layer per unit length increases, and the injected liquid additive hinders the suction of the smoking material by the suction band, so that the formation of the material layer, that is, the rod-shaped smoking article becomes unstable.

The invention aims to provide a rod-shaped smoking article manufacturing machine which can ensure stable manufacturing of rod-shaped smoking articles and effectively add liquid additives into smoking materials.

In order to achieve the above object, a rod-shaped smoking article manufacturing machine according to the present invention includes: a forming member including a forming path, forming a material layer made of a particulate smoking material on the forming path, and feeding the material layer along the forming path; a wrapping member including a wrapping path for receiving the material layer from the forming path of the forming member, forming a rod in which the material layer is continuously wrapped with a web while the material layer travels along the wrapping path, the rod having a lap portion where both side edges of the web are overlapped and bonded to each other, and feeding out the formed rod; a cutting means for cutting the rod fed from the wrapping means into rod-shaped smoking articles having a predetermined length; and an adding device for adding the liquid additive to the material layer in a region extending from the end of the forming path to the start end of the packaging path, wherein the adding device is disposed in the region and includes a plurality of injection ports for injecting the additive into the material layer, and the injection ports are separated from each other in the running direction of the material layer and in the circumferential direction of the material layer.

According to the above manufacturing machine, when the material layer moves from the end portion of the forming path to the region extending from the start end portion of the packaging path, the liquid additive, specifically, the liquid flavor containing the alcohol is injected from the plurality of injection ports into the material layer. Examples of the liquid flavor include menthol dissolved in glycerin, trimethylene glycol (PG), and ethanol.

The plurality of injection ports are spaced apart from each other in the traveling direction and the circumferential direction of the material layer, and therefore, the additive can be efficiently injected into the material layer.

Since the injection port is disposed in a region extending from the terminal end portion of the molding path to the leading end portion of the packaging path, the injection of the additive can easily ensure the disposition space of the injection port without adversely affecting the formation of the material layer on the molding path.

In addition, since the addition device has a plurality of injection ports, the total amount of injection of the additive required for the material layer can be divided and distributed to each injection port, and the amount of injection from each injection port can be reduced.

Specifically, the forming member may further include a pair of guide members provided at a terminal end portion of the forming path and guiding both sides of the material layer, and the wrapping member may further include a compressing member disposed at a leading end portion of the wrapping path and including a layer of material compressed from above, and a roll paper cover disposed at a leading end portion of the wrapping path and separating the material layer and the roll paper from each other, in which case at least two of the guide members, the compressing member, and the roll paper cover may have injection ports, respectively.

In this case, the injection ports of the guide member, the compression member, and the roll paper cover can inject the additive into the material layer from the side, upper, and lower sides of the material layer.

When the compression member has an inlet, the inlet is preferably positioned so as to avoid a portion of the material layer covering the overlapped portion of the roll paper. In this case, the injected additive does not wet the lap portion of the web. On the other hand, when the roll paper cover has the injection port, the injection port is preferably positioned upstream of the compression member as viewed in the traveling direction of the material layer. In this case, the injected additive does not wet the web.

As described above, the web or the lap portion thereof is not wetted by the additive, and therefore, the rod is stably formed.

In addition, the material layer is not compressed when passing through the injection opening of the roll paper cover, and therefore, the injection opening of the roll paper cover can easily inject the additive into the material layer.

The adding means may further comprise an adjusting means for controlling the injection amount of the additive from the injection port in accordance with the running speed of the rod. In this case, the adding device can uniformly add the additive into the rod-shaped smoking article regardless of the rod production speed.

The addition device may further include a control device for intermittently interrupting the injection of the additive by avoiding the injection of the additive into a predetermined portion of the rod to be cut. In this case, the additive adding device prevents the additive from adhering to the cutting edge of the cutting member.

The injection port may be a nozzle type injection port or a discharge port of a micro-solenoid valve, and the nozzle or the micro-solenoid valve may be arranged in the vicinity of the travel path of the material layer because of its small size.

The additive is a liquid flavor containing an alcohol, and examples of the liquid flavor include menthol dissolved in glycerin, trimethylene glycol (PG), or ethanol.

Drawings

FIG. 1 is a schematic view showing the structure of a manufacturing machine;

fig. 2 is a partially enlarged view showing the manufacturing machine of fig. 1;

FIG. 3 is a cross-sectional view of a guide block disposed at a terminal end of the forming path of FIG. 2;

FIG. 4 is a cross-sectional view of the web shield of FIG. 2;

FIG. 5 is a cross-sectional view of the web of FIG. 2 cut across its upstream end;

FIG. 6 is a cross-sectional view of the rod;

FIG. 7 is a view showing an area to which liquid flavorant is added and an area to which liquid flavorant is not added in the stick;

FIG. 8 is a view showing an ejection nozzle having an ejection port;

fig. 9 is a view showing a micro solenoid valve having a discharge port.

Detailed Description

Fig. 1 schematically shows a rod-shaped smoking article manufacturing machine.

The manufacturing machine has the same structure as the manufacturing machine for cigarette sticks. Therefore, the basic structure of the manufacturing machine will be briefly described below.

The manufacturing machine includes a molding member 10 for the material layer, and the molding member 10 is disposed on the right side as viewed in fig. 1. The molding member 10 has an endless suction belt 12, and the suction belt 12 is trained between a driving roller 14 and a driven roller 16, and the rollers 14, 16 are horizontally spaced from each other. As the drive roller 14 rotates, the suction belt 12 runs in a direction, and the lower side belt portion of the suction belt 12 forms a forming path for the material layer.

A chimney 18 is disposed on the driven roller 16 side directly below the suction belt 12, and the particulate smoking material is supplied from a supply source, not shown, into the chimney 18. The chimney 18 blows the smoking material within it up the draw belt 12.

The blown smoking material is adsorbed in layers under the suction belt 12 in operation, and a material layer K is formed on the suction belt 12. Thereby, the material layer K moves to the left in fig. 1 together with the suction belt 12.

Here, the smoking material is cut tobacco from cut sheet-like reconstituted tobacco, expanded tobacco, or a mixture of these.

The packing member 20 is disposed adjacent to the left side of the forming member 10.

The wrapper component 20 includes an endless garniture belt 22, the garniture belt 22 extending between a pair of belt rollers 24, 26. The belt rollers 24, 26 are also horizontally spaced apart from each other. The upper side strip portion of the garniture belt 22 passes from the bed (not shown) to cooperate with the forming trough of the bed to form a packaging path. The packaging path and the aforementioned forming path are arranged side by side in a line and extend in a horizontal direction. A predetermined interval is secured between the start of the packaging path and the end of the forming path.

The lower belt portion of the garniture belt 22 is guided over a plurality of guide rollers 28 and then trained back onto a belt roller 30. As the belt roller 30 rotates, the garniture belt 22 travels. The belt drum 30 is rotationally driven by a motor (not shown), and the rotation of the motor is controlled by an Electronic Control Unit (ECU) 32.

On the other hand, the belt drum 30 has a drum shaft on which a rotary encoder 34 is mounted. The rotary encoder 34 detects the rotation speed of the belt drum 30, that is, the running speed of the garniture belt 22, and supplies a signal indicating the running speed to the electronic control unit 32.

A roll paper guide 36 is disposed between the garniture belt of the packaging path and the terminal end of the forming path. The roll paper guide 36 guides the roll paper W such as paper wound from the roll paper reel to the upper side belt portion of the garniture belt 22.

The packing member 20 includes a shoe 38 and a jig 40 at the start end of the packing path, and these shoe 38 and jig 40 are arranged in this order from the drive roller 14 side. The shoe 38 has a wedge-shaped front end, which is in close proximity to the drive roller 14, for peeling off the material layer K from the suction belt 12, the peeled material layer K being fed onto the web W at the beginning of the wrapping path.

Accordingly, the material layer K moved onto the web W passes through the jig 40 together with the garniture belt 22 by the operation of the garniture belt 22, and at this time, the jig 40 compresses the material layer K from above between the jig and the bed, so that the upper portion of the material layer K is formed into a circular arc shape in cross section.

On the other hand, the forming groove of the bed gradually forms the garniture belt 22, i.e., the web W, into a U-shape as viewed in a cross section thereof while the garniture belt 22 travels from the starting end of the packaging path to the jig 40. Thereby, the forming groove is formed in an arc shape in a cross-sectional view at a lower portion of the compression material layer K between the forming groove and the jig 40. Thereby, the material layer K is compressed from above and below to be formed into a rod shape.

A short support table 42, a long support table 44, and a heating unit 46 are disposed in this order downstream of the clamp 40 on the packaging path. When the web W and the material layer K pass through the short support table 42 and the heating unit 46 together, these support tables 42 and 44 continuously wrap the material layer K around the web W via the garniture belt 22 to form the rod KR.

More specifically, the short support base 42 is curved in an arc shape so that one edge portion of the web W is covered on the material layer K from above, and at this time, the slurry is applied from a slurry application nozzle (not shown) to the other edge portion of the web W. Thereafter, the long support table 44 bends the other side edge portion and one side edge portion of the web W in the same arc shape so as to cover the material layer K, and thereby both side edges of the web W overlap each other and are bonded to each other by the slurry to form a lap portion of the bar KR.

Thereafter, when the rod KR passes through the heating unit 46, the paste at the overlapping portion is baked by the heating unit 46, and then the rod KR is continuously fed out from the packaging member 20.

A cutting member 48 is disposed downstream of the wrapping member 20. The cutting means 48 includes a cutter box 50 for allowing the rod KR to pass therethrough, and a rotatable cutter disc 52 disposed in the cutter box 50. The cutter disc 52 has one or more cutting edges (not shown) on its outer peripheral edge, and these cutting edges are arranged at equal intervals in the circumferential direction of the cutter disc 52.

The rod KR is cut at every predetermined length by the rotation of the cutter head 52, whereby each rod-shaped smoking article a is obtained. Here, the cutter head 52 and the belt roller 30 described above are connected to each other via a power transmission path (not shown), and the cutter head 52 rotates at a speed corresponding to the rotation speed of the belt roller 30, that is, the running speed of the rod KR. As a result, the cutter head 52 can cut the rod KR at every predetermined length regardless of the running speed of the rod KR.

Fig. 2 shows in more detail the area from the end of the forming path to the beginning of the packaging path. The forming path has a pair of guide shoes 54 at its terminal ends, and these guide shoes 54 are disposed on both sides of the forming path below the drive roller 16, respectively, and guide both sides of the material layer K.

Further, a roll paper cover 56 is provided extending from the guide block 54 toward the belt roller 24 of the wrapping path, and the roll paper cover 56 is disposed with a predetermined interval between the roll paper W extending between the roll paper guide 36 and the belt roller 24. The web mask 56 guides transfer from the forming path to the material layer K on the web W until the web W and the material layer K are separated from each other while the web W is overlapped on the garniture belt 22.

As is apparent from fig. 2, the jig 40 has an upstream end extending from the belt roller 24 to above the roll paper guide 36 and located above the roll paper guide 36.

The guide block 54, the roll paper cover 56, and the jig 40 are provided with injection ports of an addition device 57 according to an embodiment, and the addition device 57 will be described below.

The adding device 57 includes an electromagnetic excitation type injector 58, and the injector 58 is mounted on the outer side surface of the guide block 54 on one side. The ejector 58 has a supply port connected to an additive supply source, specifically, a fragrance supply source 60 via a supply hose, and the fragrance supply source 60 stores liquid fragrance such as menthol dissolved in glycerin, Propylene Glycol (PG), or ethanol. Since the liquid flavorant is pressurized in the flavorant supply source 60, the liquid flavorant is guided from the supply source 60 to the ejector 58 through the supply hose, and the ejector 58 is filled with the liquid flavorant.

The injector 58 is electrically connected to the aforementioned electronic control unit 32. The electronic control unit 32 sends a control signal to the injector 58 to control the opening and closing of the injector 58. Thus, when the injector 58 is opened, the injector 58 ejects the liquid fragrance from the ejection port thereof.

As is clear from fig. 3, the discharge port of the injector 58 is connected to an internal passage 62 of the guide 54, and the internal passage 62 has an injection port 64 opened on the inner surface of the guide 54. Therefore, the liquid flavorant ejected from the ejection port of the ejector 58 is injected from the injection port 64 into the material layer K through the internal passage 62.

As shown by the arrows in fig. 3, liquid fragrance may be injected into the material layer K from the guide 54 on the other side. In this case, an internal passage having an injection port is also formed in the other guide block 54, and the internal passage is connected to the fragrance supply source 60 by an injector similar to the above-described injector.

The adding device 57 includes an electromagnetic excitation type injector 66 attached to the outer surface of the roll paper shield 56, and the injector 66 is also connected to the perfume supply source 60 and the electronic control unit 32, respectively. As is clear from fig. 4, an internal passage 68 is formed in the roll paper shield 56, and the internal passage 68 has an injection port 70 connected to the ejection port of the ejector 66 and opening on the upper surface of the roll paper shield 56. Therefore, when the injector 66 is opened, the liquid flavorant is ejected from the inlet 70, and the ejected liquid flavorant is injected into the material layer K from the lower surface thereof. As shown in fig. 2, the inlet 70 is disposed at a position directly above the roll paper guide 36.

As shown in fig. 5, the adding device 57 includes an electromagnetically-excited injector 72 attached to the outer surface of the jig 40, and the injector 72 is attached to the upper surface of the upstream end of the jig 40. The injector 72 is also connected to both the perfume supply source 60 and the electronic control unit 32, and the ejection port of the injector 72 is connected to an internal passage 74 formed in the jig 40. The internal passage 74 has an injection port 76 that opens at the lower face of the jig 40. Therefore, when the injector 72 is opened, the liquid flavorant is ejected from the inlet 76, and the ejected liquid flavorant is injected into the material layer K from above.

As is apparent from fig. 5, the injection port 76 is located on a more lateral side than the lower center of the jig 40, avoiding the lower center. Therefore, when the bar KR is molded, as shown in fig. 6, the injection port 76 can inject the liquid flavorant into the material layer K while avoiding the portion of the material layer K covering the lap portion L of the roll paper W.

The electronic control unit 32 controls the amount of liquid fragrance injected into the material layer K from the injectors 58, 66, 72. Specifically, the electronic control unit 32 increases or decreases the opening degree of each injector in accordance with the running speed of the garniture belt 22, i.e., the rod KR. Therefore, the injectors 58, 66, 72 can uniformly inject the liquid fragrance per unit length of the material layer K.

The electronic control unit 32 intermittently and independently closes the injectors 58, 66, and 72 based on the driving timing of the rod KR, and interrupts the injection of the liquid flavorant into the material layer K from the injection ports 64, 70, and 76. Therefore, as shown in fig. 7, a liquid perfume-added region indicated by diagonal lines and a non-added region indicated by a blank line are alternately formed in the material layer K in the stick KR. The interval between these non-additive regions is equal to the length of the rod-shaped smoking article a, and the rod KR is cut at the cutting position CP, which is the center of the non-additive region, to obtain the rod-shaped smoking article a from the rod KR. The positions of the injection ports 64, 70, 76 as viewed in the direction of travel of the material layer K are different from one another, and therefore the timing at which the injectors 58, 66, 72 close is individually determined in accordance with the distance between the corresponding injection port and the cutter disc 52 in the cutting member 48 and the speed of travel of the material layer K.

As is apparent from the above description, the three injection ports 64, 70, and 76 are disposed apart from each other in the running direction and the circumferential direction of the material layer K, and therefore, the material layer K receives the injection of the liquid flavorant from different positions. Therefore, the amount of the liquid flavorant injected into the material layer K through each injection port is reduced to 1/3, which is the total amount of the liquid flavorant required to be added to the material layer K. As a result, even if the material layer K runs at a high speed, the efficiency of adding the liquid perfume in the material layer K can be sufficiently high.

Table 1 below shows the number and arrangement of the injection ports, and also shows the results of the addition efficiency of the liquid flavorant measured by varying the injection amount of the liquid flavorant from the injection ports, and the evaluation of the flavor and taste of the rod-shaped smoking article a.

[ Table 1]

The addition efficiency represents a ratio of the content of the liquid flavorant in the rod-shaped smoking article a to the injection amount of the liquid flavorant from the injection port. When the rod-shaped smoking article a was evaluated, a substitute cigarette as disclosed in the aforementioned japanese patent No. 3472591 was produced using the rod-shaped smoking article a, and the substitute cigarette was smoked by three evaluation specialists. When each specialist smokes, the quality of smoke containing the flavorant generated from the rod-shaped smoking article a, that is, the quality of mainstream smoke of the substitute cigarette is determined, and the determination result is an evaluation of the rod-shaped smoking article a. The judgment of the specialist was a 10-grade evaluation in which the highest point was set to 5.

As is clear from table 1, the efficiency of adding the liquid flavorant and the odor adsorption evaluation were high as the number of injection ports was increased. In addition, the evaluation result was also high with respect to the total amount of injected liquid flavorant as the total amount of injected liquid flavorant increased.

When the guide block 54, the roll paper cover 56, and the jig 40 have the injection ports 64, 70, and 76, respectively, the material layer K receives the injection of the liquid flavorant from three positions, i.e., the side surface, the lower surface, and the upper surface thereof, and thus the injected liquid flavorant is further uniformly distributed in the material layer K. This is a large factor to improve the evaluation of the rod-shaped smoking article a.

Further, since the inlets 64, 70, 76 are all disposed in the region extending from the end portion of the molding member 10 to the starting end portion of the packing member 20, the material layer K is stably formed on the suction belt 12 without being adversely affected by the injection of the liquid flavorant from the inlets 64, 70, 76.

In addition, even if the liquid flavorant is injected into the material layer K from the injection port 70, the roll paper shield 56 prevents the roll paper W from being directly wetted with the liquid flavorant. Even if the liquid flavorant is injected into the material layer K through the injection port 76, the lap portion L of each rod KR is not wetted by the liquid flavorant. Therefore, the material layer K, that is, the rod KR can be stably wrapped in the web W without causing a crack in the web W or a defective adhesion at the lap portion L.

Since the injection ports 70 and 76 are disposed upstream of the jig 40, the material layer K is not compressed by the jig 40 when the material layer K passes through the injection ports 70 and 76. Therefore, the liquid flavorant ejected from the injection ports 70 and 76 is easily injected into the material layer K.

On the other hand, the amount of the liquid flavorant injected into the material layer K by the injection ports 64, 70, and 76 increases or decreases according to the running speed of the material layer K, and therefore, the amount of the liquid flavorant added to each rod-shaped smoking article a becomes uniform regardless of the production speed of the rod KR.

The rod KR is cut in the non-addition region (layer diagram 7) of the liquid flavorant, whereby the liquid flavorant does not adhere to the cutting edge of the cutter head 52 during cutting, and therefore the durability of the cutting edge does not deteriorate.

The present invention is not limited to the above-described embodiment, and various modifications can be made.

For example, the adding device 57 may have injection ports provided in two of the guide block 54, the roll paper cover 56, and the jig 40.

As shown in fig. 8 and 9, the internal flow path may have an injection nozzle 78 or a micro solenoid valve 82 at its open end. In this case, the discharge port 80 of the injection nozzle 78 or the discharge port 84 of the electromagnetic valve 82 serves as an injection port of the adding device 57. In addition, an ink jet nozzle may be used instead of the ejection nozzle 78 and the micro solenoid valve 82. Since the ejection nozzle 78, the micro-solenoid valve 82, or the ink jet nozzle can be disposed in the vicinity of the laminar material flow as compared with the ejectors 58, 66, and 72, the non-additive regions shown in fig. 7 can be formed with high accuracy.

The manufacturing machine of the present invention can be applied to manufacture of a general cigarette rod, in addition to the components for manufacturing a substitute cigarette. In this case, the material layer is composed of a mixture of cut tobacco, cut tobacco from cut reconstituted tobacco in sheet form, and expanded cut tobacco, and the liquid flavor is a liquid flavor corresponding to the brand of cigarette.

When a liquid flavor is added to a material layer on a cigarette manufacturing machine, a flavoring step for a smoking material using a rotary-type flavoring machine and a curing step for the smoking material using a silo after the flavoring step can be omitted.

The manufacturing machine of the present invention can be used for adding various liquid additives in addition to the liquid perfume.

Claims (8)

1. A rod-shaped smoking article manufacturing machine is provided with:

a forming member including a forming path on which a material layer made of a particulate smoking material is formed and which feeds the material layer along the forming path;

a wrapping member including a wrapping path for receiving the material layer from the forming path of the forming member, forming a rod continuously wrapped in the material layer by a web while the material layer travels along the wrapping path, and sending out the formed rod, the rod having an overlapping portion where both side edges of the web are bonded so as to overlap each other;

a cutting means for cutting the rod fed from the wrapping means into rod-shaped smoking articles having a predetermined length;

an adding device for adding a liquid additive to the material layer in a region extending from a terminal end of the forming path to a starting end of the packaging path,

the addition device is arranged in the area and comprises a plurality of injection ports for injecting the additive into the material layer, the injection ports are separated from each other in the running direction of the material layer and the circumferential direction of the material layer,

the forming member further includes a pair of guide members provided at a terminal end portion of the forming path and guiding both sides of the material layer,

the wrapping member further includes a compressing member disposed at a leading end portion of the wrapping path and compressing the material layer from above, and a roll paper cover disposed at the leading end portion of the wrapping path and separating the material layer and the roll paper from each other,

at least two of the guide member, the compression member, and the roll paper cover have the injection ports, respectively.

2. The rod-shaped smoking article manufacturing machine according to claim 1, wherein when the compression member has the injection port, the injection port is located at a position avoiding the material layer covering the overlapping portion of the roll paper.

3. The rod-shaped smoking article manufacturing machine according to claim 1, wherein when the roll paper cover has the injection port, the injection port is located at a position further upstream than the compression member as viewed in a traveling direction of the material layer.

4. The rod-shaped smoking article manufacturing machine according to claim 1, wherein the adding means further comprises adjusting means for controlling an injection amount of the additive from the injection port in accordance with a running speed of the rod.

5. The rod-shaped smoking article manufacturing machine according to claim 1, wherein the adding means further comprises control means for intermittently interrupting the injection of the additive while avoiding the injection of the additive into the predetermined portion of the rod at which the rod is cut.

6. The apparatus for manufacturing rod-shaped smoking articles according to claim 1, wherein the additive is a liquid flavorant containing alcohols.

7. The rod-shaped smoking article manufacturing machine according to claim 1, wherein the injection port is an injection port of an injection nozzle.

8. A rod-shaped smoking article manufacturing machine according to claim 1, wherein the injection port is a discharge port of a micro-solenoid valve.