TW201927174A - Smoking article and filter for smoking article - Google Patents

Abstract

A filter for smoking article according to the present invention has a powder inclusion product obtained by making a raw material powder containing at least one of a taste component and a fragrance component become one piece, which will become powder upon application of an external force, a cavity in which the powder inclusion product is disposed, and a rectification member continuously provided at the upstream side of the cavity and rectifying the mainstream smoke flowing from the upstream side and guiding it to the cavity.

Description

Smoking and smoking filter

The present invention relates to a filter for smoking articles and smoking articles.

There is known a cigarette that enjoys a taste or aroma, or both, by sucking the powder in the filter. For example, Patent Document 1 discloses a smoking article comprising: a powder-containing material, which is formed by forming a raw material powder including at least one of a taste component and a flavor component, and is formed by applying an external force. a powder; a cavity configured to contain the powder; and a filter comprising a flow path for communicating the cavity with the mouth end for the passage of the powder.

[Previous Technical Literature] [Patent Literature]

Patent Document 1: International Publication No. 2016/181843

In the filter described in Patent Document 1, the powder is transmitted through The inner diameter of the flow path is formed to be smaller than the outer diameter of one piece of the powder, and it is possible to suppress the falling of the soot which is scattered at an unintended time point during production or transportation. However, in the prior art, there is still room for improvement in the transport efficiency of the powder-containing material in the powder form in the cavity.

The present invention has been made in view of the above problems, and it is an object of the invention to provide a filter for smoking articles which can absorb a powder containing at least one of a taste component and a flavor component, and which can improve the suction time more than in the past. The technology of powder delivery efficiency.

In order to solve the problem, the present invention is to connect a flow regulating member to an upstream side of a cavity in which a powder-containing material is disposed, thereby rectifying a mainstream smoke flowing from an upstream side by a flow regulating member, and introducing the same into a cavity.

More specifically, the smoking article of the present invention comprises: a tobacco rod comprising shredded tobacco; and a filter connected to the end of the tobacco rod via a tipping paper (also known as a filter paper or a tipping paper); The mouth has a powdery substance, and a raw material powder containing at least one of a taste component and a flavor component is formed into a single piece, and a powder is formed by applying an external force; and the cavity is provided with the powdery substance. And a rectifying member connected to the upstream side of the cavity, and rectifying the mainstream smoke flowing from the upstream side to guide the cavity to the cavity.

Among the smoking articles, cigarettes, cigars, cigarillos, smoking articles or scent of tobacco, or a non-heating type can be exemplified by smoking with an electronic component or a carbon heat source. smoke A scent or aroma of grass, or a smoking article of both.

Further, in the smoking article of the present invention, the rectifying member may have a low-ventilation resistance portion which is disposed in a cross section from the front end surface to the rear end surface and has a relatively low ventilation resistance; and a configuration from the front end surface to the rear end surface The other portion of the cross section is a high-ventilation resistance portion having a higher ventilation resistance than the low-ventilation resistance portion, and guides the mainstream smoke flowing from the upstream side through the low-ventilation resistance portion to the cavity.

Further, in the smoking article of the present invention, the flow regulating member may have a hollow passage that penetrates the flow regulating member in the axial direction, and a ventilation restricting portion that is formed in a region other than the hollow passage and restricts the flow of the mainstream smoke, the hollow passage The ventilation restriction portion corresponds to the high ventilation resistance portion.

Further, in the smoking article of the present invention, the rectifying member may be formed of a filter material formed into a rod shape, and the filter medium density of the low ventilation resistance portion is lower than the high ventilation resistance portion.

Moreover, the smoking article of the present invention may further comprise a mouth filter portion for connecting the cavity to the mouth end and connecting the powder to the cavity from the cavity on the downstream side of the cavity. A powder supply path supplied to the aforementioned suction end is formed along the axial direction.

Further, in the smoking article of the present invention, the powder supply path may have a cross section capable of suppressing entry of the one-piece powder-containing material.

Further, in the smoking article of the present invention, the low-velocity resistance portion (for example, a hollow path) in the flow regulating member and the suction port filter portion The powder supply path in the middle may be disposed at a corresponding position in the cross section of the filter.

Further, in the smoking article of the present invention, the low-ventilation resistance portion (for example, a hollow passage) in the flow regulating member and the powder supply passage in the suction filter portion may be disposed in a cross section of the filter. Corresponding location.

Further, in the smoking article of the present invention, the low-ventilation resistance portion (for example, a hollow passage) may be disposed in a region on the outer peripheral side of the cross-section of the flow regulating member.

Further, in the smoking article of the present invention, a plurality of the low-velocity resistance portions (for example, hollow paths) may be disposed in a region on the outer peripheral side of the flow regulating member.

Further, in the smoking article of the present invention, a plurality of the low-velocity resistance portions (for example, hollow paths) may be disposed at regular intervals along the circumferential direction of the peripheral side region of the flow regulating member.

Further, in the smoking article of the present invention, the low-ventilation resistance portion (for example, a hollow passage) may be disposed in a central region of the cross-section of the flow regulating member.

Here, the present invention can also be specified as a filter for the above smoking article. Specifically, the filter for a smoking article of the present invention includes a powder-containing material, and is formed by forming a raw material powder containing at least one of a taste component and a flavor component, and is formed by applying an external force. a powder; a cavity in which the powdery substance is disposed; and a rectifying member connected to an upstream side of the cavity and a mainstream smoke flowing from the upstream side After rectification, it is guided to the aforementioned cavity.

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

According to the present invention, there is provided a filter for smoking articles which can absorb a powder containing at least one of a taste component and a flavor component, and the powder transport efficiency at the time of smoking can be improved more than in the past.

1‧‧ ‧ Cigarettes

2‧‧‧ tobacco rod

3‧‧‧ outer paper

4‧‧‧ filter

21‧‧‧ cut tobacco

22‧‧‧Roll paper

31‧‧‧ vents

40‧‧‧Rectifying components

41‧‧‧Upstream filter section

42‧‧‧ suction filter

43‧‧‧ cavity

44‧‧‧Powder contents

45‧‧‧cigarette paper

400‧‧‧ Hollow

401‧‧‧ Ventilation Restriction Department

421‧‧‧ powder supply road

4210‧‧‧Central Connection

4211‧‧‧ Hole Department

4211a‧‧‧ peripheral side area

4211b‧‧‧Central side area

CL‧‧‧ center axis

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

Fig. 2 is a view showing a longitudinal sectional view of a main part of the cigarette of the first embodiment.

Fig. 3 is a view showing a cross section of a mouth filter unit of the first embodiment.

Fig. 4 is a view showing a cross section of the flow regulating member of the first embodiment.

Fig. 5 is a view showing a state in which the powdery substance in the filter of the first embodiment is crushed to form a powder form.

Fig. 6 is a view showing a list of the rate of change in the amount of powder transported with respect to the control cigarette in each of the examples.

Fig. 7A is a schematic view showing a cross section of the rectifying member of each embodiment.

Fig. 7B is a schematic view showing a cross section of the rectifying member of each embodiment.

Fig. 8 is a schematic view of a smoker for measuring the amount of powder transported in the examples.

Fig. 9A is a longitudinal sectional view showing a filter of the cigarette of the first modification.

Fig. 9B is a cross-sectional view of the flow regulating member of the filter of the first modification.

Fig. 9C is a cross-sectional view of the nozzle filter portion of the filter of the first modification.

Fig. 10A is a longitudinal sectional view showing a filter of the cigarette of the second modification.

Fig. 10B is a cross-sectional view of the flow regulating member of the filter of the second modification.

Fig. 10C is a cross-sectional view showing the suction port filter of the filter of the second modification.

Fig. 11A is a longitudinal sectional view showing a filter of a cigarette of Modification 3.

Fig. 11B is a transverse sectional view of the flow regulating member of the filter of the third modification.

Fig. 11C is a cross-sectional view showing the suction port filter of the filter of the third modification.

Fig. 12A is a longitudinal sectional view showing a filter of the cigarette of the fourth modification.

Fig. 12B is a transverse sectional view of the flow regulating member of the filter of the fourth modification.

Fig. 12C is a cross-sectional view of the nozzle filter portion of the filter of the fourth modification.

Hereinafter, an embodiment of a filter-attached cigarette according to an example of the smoking article of the present invention will be described in detail with reference to the drawings. The dimensions, materials, shapes, relative positions, and the like of the constituent elements described in the present embodiment are not limited to the above-described requirements unless otherwise specified.

<Embodiment 1>

Fig. 1 is a perspective view showing the appearance of a cigarette 1 of the first embodiment. Fig. 2 is a longitudinal sectional view of a main part of the cigarette 1 of the first embodiment. The cigarette 1 is a filter-equipped cigarette including a tobacco rod 2 and a filter 4 connected to one end of the tobacco rod 2 via the outer layer paper 3.

The tobacco rod 2 is formed by winding the tobacco 21 with a roll paper 22 In a cylindrical shape (rod shape). The filter 4 is a member for filtering the smoke component contained in the mainstream smoke when the mainstream smoke generated when the cigarette 1 is smoked, and is formed into a cylindrical shape having substantially the same diameter as the tobacco rod 2.

The filter 4 is wound up by the cigarette paper 45 and the outer layer paper 3, and is connected to the rear end side of the tobacco rod 2 via the outer layer paper 3. The outer layer paper 3 is obtained by winding the ends of the tobacco rod 2 integrally with the filter 4 and connecting these members. Hereinafter, an end portion of the tobacco rod 2 that is connected to the filter 4 in the longitudinal direction (axial direction) is referred to as a "rear end", and an end portion on the opposite side is referred to as a "front end" (tip). The end portion of the filter 4 which is connected to the tobacco rod 2 in the longitudinal direction (axial direction) is referred to as a "front end", and the end portion opposite to the front end is referred to as a "suction end". A section along the longitudinal direction (axial direction) of the cigarette 1 (tobacco rod 2, filter 4) is defined as a "longitudinal section", and a section perpendicular to the longitudinal section is defined as a "cross section". Moreover, "upstream" and "downstream" mean the relative positional relationship based on the flow of mainstream smoke. Further, the symbol CL shown in Fig. 2 indicates the central axis of the cigarette 1 (tobacco rod 2, filter 4).

The filter 4 includes an upstream filter portion 41 connected to the rear end portion of the tobacco rod 2, a suction port filter portion 42 on the suction port end side, and a rectifying member 40 formed between the upstream filter portion 41 and the suction port filter portion 42. The hollow cavity 43; and the powder containing material 44 accommodated in the cavity 43 and the like. The filter 4 is provided with an upstream filter portion 41, a flow regulating member 40, a cavity 43, and a suction port filter portion 42 in this order from the front end side. The powder-containing material 44 is formed by forming a raw material powder containing at least one of a taste component and a flavor component, and is crushed by a smoker to form a powder.

The upstream filter portion 41 and the suction port filter portion 42 are, for example, The filter fiber of cellulose acetate or the like is formed into a cylindrical shape, and the upstream filter portion 41, the suction filter portion 42, and the flow regulating member 40 are wound integrally by the cigarette paper 45. The cigarette paper 45 used in the filter 4 can be a gas permeable material used for general products or a material that is not permeable. The material of the cigarette paper 45 is generally made of vegetable fiber, but a sheet of chemical fiber (polymer, polypropylene, polyethylene, nylon, etc.) or a polymer-based sheet may be used. Metal foils such as aluminum foil can also be used. Further, the filter 4 can use a so-called non-wound filter. The non-wound filter has a filter material and a skin layer which is formed into a cylindrical shape, and the skin layer can be obtained by thermoforming of a filter material. When using a non-wound filter, the cigarette paper can be omitted.

The suction port filter portion 42 located on the suction port end side is provided with a powder supply path 421 so as to penetrate the suction port filter portion 42 in the axial direction, and the cavity 43 and the suction port end communicate with each other via the powder supply path 421. The powder supply path 421 has a cross section in which the entry of the powdery substance 44 in one state can be suppressed. Further, the flow regulating member 40 is a member that is connected to the upstream side of the cavity 43 and that rectifies the mainstream smoke flowing from the upstream side and guides it to the cavity 43. More specifically, the rectifying member 40 is connected between the upstream filter portion 41 and the cavity 43 in the axial direction. The flow regulating member 40 has a low-ventilation resistance portion which is disposed in a portion of the cross section from the front end surface to the rear end surface and has a relatively low ventilation resistance; and other portions disposed in the cross section from the front end surface to the rear end surface and the ventilation resistance is lower than the ventilation a high-ventilation resistance portion having a high resistance portion; and guiding the mainstream smoke flowing from the upstream side through the low-ventilation resistance portion to the member of the aforementioned cavity. More specifically, the rectifying member 40 has: through the entire axial direction The hollow hollow passage 400 of the flow member 40; and the ventilation restricting portion 401 formed in a region other than the hollow passage 400; and the circulation restricting portion 401 restricts the flow of the mainstream smoke. In this case, the hollow passage 400 in the flow regulating member 40 corresponds to the low-velocity resistance portion, and the ventilation restricting portion 401 corresponds to the high-ventilation resistance portion. In addition, in the ventilation restriction portion 401 of the flow regulating member 40, the circulation of the mainstream smoke is not completely prohibited, and the mainstream smoke may be allowed to flow slightly in the ventilation restriction portion 401. That is, since the ventilation resistance of the ventilation restricting portion 401 is relatively larger than the hollow passage 400 in the flow regulating member 40, the amount of mainstream smoke flowing through the ventilation restricting portion 401 can be actually zero or is compared to the hollow passage. 400 is significantly reduced. The details of the hollow passage 400 and the ventilation restriction portion 401 in the powder supply path 421 will be described later. Further, the filter 4 is integrally wound with the tobacco rod 2 by being wound up by the outer layer paper 3.

The outer paper 3 is generally made of paper made of vegetable fibers, but a sheet of a chemical fiber (polypropylene, polyethylene, nylon, etc.) or a polymer-based sheet may be used, or It is a metal foil such as aluminum foil. Further, the filter 4 may contain a fragrance such as menthol. The method of adding the flavor is not particularly limited. For example, it is known to adsorb the fragrance, to arrange the rope-like substance in the filter 4, to contain the filler in the filler of the filter 4, or to fix the fragrance by a capsule or the like. The material is configured in the method of filter 4.

In the outer paper 3 and the cigarette paper 45 corresponding to the upstream filter portion 41, a plurality of vent holes for introducing the air for ventilation (outside air) into the filter 4 to dilute the mainstream smoke are formed in a ring shape ( Hereinafter It is a "ventilation hole in the upstream filter portion") 31 shape. The cigarette paper 45 can also be made of a material that is not ventilated or has a low air permeability. Further, by adjusting the opening area of the upstream filter portion region vent hole 31 (the total opening area when the plurality of upstream filter portion region vent holes 31 are arranged), the Vf value (the total ventilating flow rate) can be adjusted. The ratio of the amount of air inflow from the filter). The tar value of the cigarette can be designed according to the Vf value, so that the powder formed by crushing the powder containing the substance 44 is transported to the maximum extent.

The cavity 43 is a space formed inside the filter 4, and is a cylindrical space surrounded by the surface of the rear end of the upstream filter portion 41 and the front end of the suction filter unit 42 and the cigarette paper 45. The cavity 43 may have a size in which the powder content 44 can be provided. In the case where a plurality of powder contents 44 are provided, the cavity 43 must be set to a size in which a plurality of powder contents 44 can be provided. Also, the shape of the cavity 43 is not particularly limited.

The powdery substance 44 is a spherical shape in which the raw material powder is formed into one piece, and a powder is formed by applying an external force. The external force is a force stronger than the force applied at the time of manufacture or transportation, or a force stronger than the suction force at the time of smoking. The external force is an example of the force exerted by the smoker with the finger (the force of the squeeze). For example, the powder content 44 forms a powder having a breaking strength of 5 N or more and 60 N or less. Preferably, the powder containing material 44 has a breaking strength of 20 N or more and 30 N or less, more preferably 20 N or more and 25 N or less. Further, the shape of the powder-containing material 44 is not particularly limited, and may be a polyhedron such as an ellipsoid, a cylinder, a hollow cylinder, a cone, a pyramid, a toroidal body, a cube or a rectangular parallelepiped, or a combination thereof. Further, the raw material powder constituting the powdery substance 44 has at least a part of which can be passed through the powder. The particle diameter of the supply path 421. For example, the particle diameter of the raw material powder can be set in the range of 10 μm to 300 μm.

The powdery substance 44 can be produced by adding an appropriate amount of water to a nucleating agent as a raw material powder, mixing them, and drying them. Further, a binder may be added as a raw material of the powdery substance 44. Further, it is also possible to add a fragrance to the nucleating agent together with water. As the nucleating agent, monosaccharide ‧ disaccharide ‧ polysaccharides or derivatives thereof can be used. For example, ketone (dihydroxyacetone), aldose (glyceraldehyde), ketose (erythritol), aldose (erythritol, threose), pentose, ketopentose ( Ribulose, xylulose), aldose (ribose, arabinose, xylose, lyxose), deoxy sugar (deoxyribose), ketohexose (aloxulose, fructose, sorbose, tower Glycogen), aldose (alose, altrose, glucose, mannose, gulose, idose, galactose, talose), deoxy sugar (fucose, fucose, Rhamnose), sedative heptose, sucrose, lactose, maltose, trehalose, pine disaccharide, cellobiose, raffinose, melezitose, maltotriose, acarbose , stachyose, glucose, starch (amylose, amylopectin), cellulose, dextrin, dextran, fructose, and the like. These monosaccharide ‧ disaccharide ‧ polysaccharides or derivatives thereof may be used singly or in combination. Preferably, the nucleating agent is actually soluble in the oral cavity.

Further, as the binder, a water-soluble polymer such as dextrin, gelatin, gum arabic, polyvinyl alcohol, carboxymethylcellulose or the like can be used. The amount of the binder added is preferably 10% by weight or less based on the nucleating agent.

The fragrance to be added to the nucleating agent is not particularly limited, and known perfumes can be used, but it is particularly suitable for powder flavors and oily flavors. Hehe. The main powder flavors include chamomile, fenugreek, menthol, mint, cinnamon, and vanilla. Also, the main oily flavors include lavender, cinnamon, cardamom, celery, clove, bitter tree, nutmeg, sandalwood, bergamot, geranium, honey flavor, rose oil, vanilla extract, lemon, orange, mint. Cinnamon, caraway, cognac, jasmine, chamomile, menthol, buckwheat, ylang ylang, sage, spearmint, fennel, allspice, ginger, anise, alfalfa, coffee, etc. These powder flavors and oily flavors may be used singly or in combination. When a powdery fragrance is used, the particle diameter thereof is preferably 500 μm or less. The perfume is preferably a liquid or can actually be dissolved in the mouth. Further, the amount of the fragrance component to be added is preferably 10% by weight or less based on the nucleating agent.

As the taste component, citric acid, tartaric acid, sodium glutamate, neotame, thaumatin, stevia, sorbitol, xylitol, erythritol, aspartame, rutin, orange may be mentioned. Dersin, oxalic acid, tannic acid, catechin, naringin, quinine, quinic acid, limonin, caffeine, capsaicin, vitamins, amino acids, polyphenols, alginate, flavonoids , lecithin and so on. The taste component is preferably a liquid or can actually be dissolved in the mouth. The amount of the flavor component to be added is preferably 10% by weight or less based on the nucleating agent. Further, the powdery substance 44 may be a plastic capsule, an ingot formed body, or a pellet in which the powder is enclosed.

Here, Fig. 3 is a schematic cross-sectional view of the mouth filter unit 42 of the first embodiment. As shown in Fig. 3, the cross section of the powder supply path 421 in the present embodiment is formed as an opening having a windmill shape as a whole. More specifically, in the cross section of the mouth filter portion 42, the powder is supplied The feed path 421 is formed by a central connecting portion 4210 located on the center side of the cross section of the suction port filter portion 42 and a plurality of holes 4211 extending from the central connecting portion 4210 toward the peripheral side of the cross section of the mouth filter portion 42. Here, the opening area of each hole portion 4211 is relatively larger than the opening area of the center connecting portion 4210.

The plurality of holes 4211 in the powder supply path 421 have a blade shape, and extend radially from the central connection portion 4210 in mutually different directions. Further, the distal end of each of the hole portions 4211 (the end portion on the opposite side to the central connecting portion 4210) is disposed at a position separated from the cigarette paper 45 by the suction port filter portion 42, and the cigarette is at the tip end of each hole portion 4211. There is a filter fiber forming the suction filter portion 42 between the sheets 45. Further, in the example shown in FIG. 3, the powder supply path 421 is formed such that the three hole portions 4211 extend radially from the central connecting portion 4210 toward the peripheral side. Moreover, the opening width of each of the hole portions 4211 in the powder supply path 421 is gradually expanded toward the distal end side from the side of the proximal end (the end connected to the central connecting portion 4210). Therefore, the opening width of each of the hole portions 4211 of the powder supply path 421 located on the outer peripheral side region 4211a on the outer peripheral side of the cross-sectional portion of the suction port filter portion 42 is larger than the opening width of the central side portion 4211b located at the center side of the horizontal cross section. The ground is wider (larger). The powder supply path 421 of the mouth filter unit 42 configured as described above has a cross section for preventing the powdery substance 44 from moving to the downstream of the cavity 43 by suppressing the entry of the spherical powder content 44 in which the raw material powder is formed into one piece. . Specifically, the powder supply path 421 has a cross-sectional dimension smaller than the diameter of the one-piece powder-containing material 44.

Next, the flow regulating member 40 will be described. 4th The figure is a schematic view of a cross section of the flow regulating member 40 of the first embodiment. As shown in Fig. 4, the flow regulating member 40 is provided with a single hollow passage 400 which is coaxial with the central axis CL and has a circular cross section. Hereinafter, the arrangement form of the hollow passage 400 is also referred to as a "single hole form". The flow regulating member 40 may be a molded body such as a resin or a metal, and a hollow hollow passage 400 may be formed in the molded body to form another region as the ventilation restricting portion 401. Further, the rectifying member 40 may be a central hole filter unit in which a filter fiber such as acetate fiber is formed into a columnar shape and a through hole is formed in a central portion of the shaft, similarly to the suction port filter unit 42. The hollow passage 400 has a cross section which can prevent entry of the spherical powdery substance 44 which forms the raw material powder, and specifically, the diameter of the hollow passage 400 is designed to be larger than the diameter of the bulky powdery substance 44. Small size.

<effect>

In the cigarette 1 of the present embodiment, the powder supply path 421 of the mouth filter unit 42 has a cross section in which the block-shaped powder content 44 cannot pass. Therefore, the bulk powder-containing material 44 disposed in the cavity 43 does not pass through the powder supply path 421, so that the bulk powder-containing material 44 can be prevented from being discharged to the outer surface of the filter 4 through the powder supply path 421. On the other hand, since the smoked person applies an external force or the like to crush the bulk powdery substance 44, and the powdery substance 44 is formed into a powder form, the powder of the powdery substance 44 can pass through the powder supply path 421. As a result, the smoker can easily absorb the powder at any desired time point, and can obtain the taste produced by the taste component and the flavor produced by the flavor component, or both.

Further, in the filter 4 of the present embodiment, the flow regulating member 40 is connected to the upstream side of the cavity 43. According to the flow regulating member 40 of the present embodiment, a hollow hollow passage 400 for guiding the mainstream smoke to the cavity 43 is provided in a portion extending in the axial direction, and is provided in other portions for restricting the mainstream smoke. Since the ventilating restricting portion 401 is ventilated, the mainstream smoke can be concentrated in a specific region in the cross section of the cavity 43 to be rectified. Thereby, the flow rate of the mainstream smoke can be increased in the hollow tunnel 400. Further, by guiding the high-speed mainstream smoke whose flow rate is increased by the hollow path 400 into the cavity 43, the powder of the powdery substance 44 accumulated in the cavity 43 can be effectively rolled up, and filtered through the suction port of the rear stage. The powder supply path 421 of the portion 42 effectively transports the powder of the powder containing material 44.

Further, in the present embodiment, since the hollow passage 400 in the flow regulating member 40 is in the form of a single hole as shown in Fig. 5, the sectional area of the hollow passage 400 is not excessively small, and the hollow cross section can be ensured to have a certain size. Therefore, although the mainstream smoke flowing through the hollow road 400 is fast, it is possible to suppress the flow rate from becoming too small. As a result, the high-speed mainstream smoke can be introduced into the cavity 43 in a concentrated flow rate, so that the strong mainstream smoke of the powder of the powdery substance 44 accumulated in the cavity 43 can be supplied to the cavity. 43, and the powder of the powder containing material 44 is efficiently transported. Further, the form of the hollow passage 400 in the flow regulating member 40 is not limited to the above-described single hole form, and various forms can be employed. Further, other embodiments of the hollow tunnel 400 will be described later.

Further, according to the filter 4 of the present embodiment, since the flow regulating member 40 is connected upstream of the cavity 43, the powder in the cavity 43 can be lifted. Since the powder containing the material 44 is transported efficiently, it is not necessary to provide a plurality of vent holes for introducing the air for ventilation (outside air) into the filter 4 to dilute the mainstream smoke on the side surface of the cavity 43 (hereinafter referred to as " Cavity area vents"). Thereby, the strength of the cavity 43 can be increased and it is not easy to bend.

However, a cavity area vent hole may also be provided on the side of the cavity 43. In this case, since the cigarette paper 45 is made of a material having a high air permeability, the cavity region vent hole is not penetrated through the cigarette paper 45, but can be taken from the outside by the vent hole formed in the cavity region of the outer layer paper 3. The incoming air passes through to the inside of the cavity 43. Thereby, there is an advantage that the strength of the cigarette paper 45 is increased and it is difficult to bend. Further, the cigarette paper 45 may be made of a material having no air permeability or a material having a low air permeability. In this case, it is preferable that the cigarette paper 45 is opened at a position corresponding to the vent hole of the cavity region. Further, it is preferable that the outer layer paper 3 is a pre-opened outer layer paper in which a vent hole of a cavity region is formed in advance. Thereby, there is no fear of causing damage to the powdery substance 44 disposed in the cavity 43 as compared with the case where the cavity area vent hole is formed by, for example, an on-board laser.

In the powder supply path 421 of the present embodiment, the plurality of holes 4211 extend in mutually different directions toward the peripheral side with the central connecting portion 4210 located at the center side of the cross-sectional portion of the suction filter unit 42 as a starting point. Here, it is advantageous from the viewpoint of increasing the cross-sectional area of the powder supply path 421 and increasing the transport amount (supply amount) of the powder at the time of smoking by the smoker, but increasing the cross-sectional area of the powder supply path 421, It is also easy to cause the smoker to unintentionally scatter the powder when it is not sucked (soot falls). The above-mentioned unintended soot drop can be exemplified by the fact that the smoker does not hold the filter 4 In the state in which the suction port side of the filter 4 is directed downward, the powder may be dropped to the outside through the powder supply path 421 or the like.

On the other hand, in the powder supply path 421 of the present embodiment, the plurality of holes 4211 are extended from the central connecting portion 4210 on the center side of the cross-sectional side of the suction port filter portion 42 toward the peripheral side in different directions. In the cross section of the mouth filter unit 42, the opening areas are not concentrated in one place, but are distributed and disposed on the outer side. Therefore, after the bulk powder-containing material 44 is crushed to form a powder, it is possible to secure a total opening area sufficient to sufficiently ensure the amount of supply (supply amount) of the powder at the time of suction, and to suppress the powder which is not expected when the powder is not sucked. The ash dropped. In particular, in the powder supply path 421 of the present embodiment, since the plurality of holes 4211 are radially extended from the central connecting portion 4210 toward the peripheral side, the opening region can be more appropriately dispersed in the cross section of the mouth filter portion 42. Further, the undesired soot drop of the powdery substance 44 after the pulverization can be appropriately suppressed, and it is easier to further secure the amount of the powder to be transported at the time of suction.

Here, when the smoker holds the filter 4 of the cigarette 1 and sucks it, the powder of the pulverized powder containing material 44 in the cavity 43 is deposited on the peripheral side of the cavity 43 (cigarette paper 45). Therefore, the opening area of the powder supply path 421 is dispersed in a large number on the outer peripheral side of the mouth filter unit 42, but it is advantageous from the viewpoint of increasing the amount of powder transported during the suction. On the other hand, according to the powder supply path 421 of the present embodiment, the central connecting portion 4210 is relatively small, and the opening area of each of the hole portions 4211 is made larger than that of the central connecting portion 4210, so that the suction can be increased. The amount of powder that was tasted at the time of the taste. Further, outside the respective hole portions 4211 in the powder supply path 421 Since the opening width of the side region 4211a is relatively wider than the center side region 4211b, it is easier to ensure the size of the opening area in the peripheral side of the cross section of the mouth filter portion 42. As a result, the amount of powder transported at the time of smoking can be further increased.

Further, the front end of each hole portion 4211 in the powder supply path 421 is separated from the cigarette paper 45 of the mouth filter unit 42, and the filter fiber is present between the tip end of each hole portion 4211 and the cigarette paper 45. In this manner, the end portion of the hole portion 4211 does not extend to the state in which the cigarette paper 45 is in contact with the cigarette paper 45, and the edge portion (outermost portion) of the mouth filter portion 42 does not form an opening, so that the non-removal can be further suppressed. Unexpected soot dropped when sucking.

Further, in the powder supply path 421 of the present embodiment, the base ends of the plurality of holes 4211 are connected to each other by the central connecting portion 4210, and one continuous opening is formed. Therefore, when the suction filter unit 42 is manufactured, the suction filter unit 42 can be manufactured using a single mandrel, and the filter fibers can be uniformly filled in a region other than the powder supply path 421 in the cross section of the suction filter unit 42. That is, the manufacturing quality of the mouth filter unit 42 can be stabilized. Further, the form of the powder supply path 421 in the mouth filter unit 42 is not limited to the windmill form shown in FIG. 3, and various forms can be employed. Further, other embodiments of the powder supply path 421 will be described later.

Further, it is preferable that the cigarette paper 45 of the filter 4 is selected from a pattern in which the smoker does not easily bend or wrinkle when an external force is applied to the bulk powder-containing material 44 to crush it. For example, the basis weight of the cigarette paper 45 is preferably 50 to 200 g/m ² , and more preferably in the range of 50 to 110 g/m ² . Further, the air permeability of the cigarette paper 45 is preferably set to 1000 to 10000 [CU]. Further, the length of the filter 4, the upstream filter portion 41, the flow regulating member 40, the cavity 43, and the suction filter portion 42 are not particularly limited.

<Example>

Hereinafter, the present invention will be more specifically described by the examples, but the present invention is not limited to the description of the following examples as long as it does not exceed the gist of the invention. In the hollow path 400 of the flow regulating member 40 in the filter 4, the cigarettes 1 of the first to fourth embodiments and the control cigarettes not provided with the flow regulating member 40 were tested, and the test for measuring the amount of powder transported during the suction was carried out. In the filter 4 of each embodiment, the length of the upstream filter portion 41 is set to 9 mm, the length of the flow regulating member 40 is set to 5 mm, the length of the cavity 43 is set to 6 mm, and the length of the suction filter portion 42 is set to 7 mm. . In addition, a state in which the powder-containing material 44 is broken is assumed, and the raw material powder of the powder-containing material 44 is accommodated in the cavity 43. For the raw material powder of the powdery substance 44, 50 mg of lactose (Pharmatose 100M manufactured by DFE Pharma Co., Ltd.) was used. Further, the filter in the cigarette was controlled such that the length of the upstream filter portion 41 was 14 mm, the length of the cavity 43 was 6 mm, and the length of the suction filter portion 42 was 7 mm. Further, the filter for controlling the cigarette is not provided with the flow regulating member 40, but the upstream filter portion 41, the cavity 43, and the suction port filter portion 42 are arranged side by side in the axial direction.

Fig. 6 is a view showing a list of the rate of change in the amount of powder transported with respect to the controlled cigarettes of the respective examples. The rate of change in the amount of powder transported herein refers to the ratio of the amount of powder transported in each of the examples when the amount of powder transported in the cigarette is controlled.

7A and 7B are cross sections showing the rectifying members 40 of the respective embodiments. The first embodiment is a "single-hole form", the second embodiment is a "three-hole form", the third embodiment is a "12-hole form", and the fourth embodiment is a "peripheral 12 groove form". The "single hole form" of the first embodiment is a hollow path 400 having a single circular cross section at the center portion of the cross section of the flow regulating member 40, and the sectional area of the opening is 6.0 mm ² . Further, the "three-hole form" of the second embodiment is a hollow road 400 having three circular cross-sections at a fixed pitch of 120° in the circumferential direction in a region close to the outer peripheral portion of the rectifying member 40, and the total sectional area of the opening. It is 5.3mm ² . Further, the "12-hole form" of the third embodiment is a hollow road 400 having 12 circular cross-sections at a fixed pitch of 30 degrees in the circumferential direction at the outer peripheral portion of the cross-section of the flow regulating member 40, and the total sectional area of the openings. It is 6.2mm ² . Further, in the "peripheral 12 groove form" of the fourth embodiment, twelve hollow channels 400 having a semicircular groove shape are provided at a fixed pitch of every 30 degrees in the circumferential direction of the outer peripheral portion of the flow regulating member 40, and the total number of the openings is The sectional area is 9.2 mm ² . Further, the powder supply paths 421 of the first to fourth embodiments and the mouth filter unit 42 for controlling the cigarettes are of a common pattern, and the windmill-shaped cross section shown in Fig. 3 is employed.

When the powder delivery amount is measured, the smoking machine shown in Fig. 8 is used. In the present embodiment, a smoking machine which can be placed by Borgwaldt Co., Ltd. was used, and a suction test was conducted in a non-ignition state, and the amount of powder transported was measured. In the suction test, the suction flow rate was set to 35 mL/2 seconds, the number of suctions was set to five times, and the number of measurements was set to five. Further, the powder delivery amount was such that the powder collection pad (Cambridge Pad) was removed at each suction, and the weight was measured by an electronic scale, and the weight difference before and after the suction was calculated.

As shown in Fig. 6, in all of Examples 1 to 4, it was confirmed that the powder transport amount was increased as compared with the control cigarette in which the rectifying member 40 was not disposed. plus. In particular, if Comparative Example 1 (single-hole form) and Example 2 (three-hole form) were compared, although the total sectional area of the opening of Example 2 (three-hole form) was opposite to that of Example 1 (single-hole form) Smaller, the rate of increase in powder delivery is still large. This is presumed to be that the airflow is concentrated and effectively stacked on the periphery of the cavity by providing the hollow passage 400 of the rectifying member 40 of Embodiment 2 (three-hole form) in the region on the peripheral side of the cross section of the rectifying member 40. The effect of the collision of lactose powder on the cigarette paper.

<Modification>

Next, the relationship between the hollow passage 400 of the flow regulating member 40 in the filter 4 of the first embodiment and the powder supply passage 421 in the suction filter unit 42 will be described. Fig. 9A is a longitudinal sectional view of the filter 4A of the cigarette 1A of the first modification. Fig. 9B is a cross-sectional view of the flow regulating member 40 of the filter 4A of the first modification. Fig. 9C is a cross-sectional view of the mouth filter unit 42 of the filter 4A of the first modification. As shown in Figs. 9A to 9C, the filter 4A of the first modification is formed such that the hollow passage 400 of the flow regulating member 40 and the powder supply passage 421 in the suction filter unit 42 are disposed at the center of the cross section of the filter 4A. "Single hole form". Further, in the filter 4A, the hollow path 400 of the flow regulating member 40 and the powder supply path 421 in the mouth filter unit 42 are disposed at positions corresponding to the cross section of the filter 4A. By arranging the hollow path 400 of the flow regulating member 40 and the powder supply path 421 in the suction filter unit 42 so as to face each other, the hollow passage 400 of the flow regulating member 40 can be rectified and guided to the main flow of the cavity 43. The smoke (air flow) is smoothly guided to the powder supply path 421 disposed opposite to the hollow path 400, and thus The powder of the powder containing material 44 deposited in the cavity 43 is effectively carried as the mainstream smoke flows.

Fig. 10A is a longitudinal sectional view showing a filter 4B of the cigarette 1B of the second modification. Fig. 10B is a cross-sectional view of the flow regulating member 40 of the filter 4B of the second modification. Fig. 10C is a cross-sectional view of the mouth filter unit 42 of the filter 4B of the second modification. As shown in FIGS. 10A to 10C, the filter 4B of the second modification forms the "three-hole form" in the hollow path 400 of the flow regulating member 40 and the powder supply path 421 in the suction filter unit 42. Further, in the second modification, the hollow passage 400 of the flow regulating member 40 and the powder supply passage 421 of the suction port filter portion 42 are disposed at positions corresponding to the cross section of the filter 4B, so that it can be stacked in the cavity. The powder of the powder containing material 44 of 43 is effectively transported as the mainstream smoke flows.

Fig. 11A is a longitudinal sectional view showing a filter 4C of the cigarette 1C of the third modification. Fig. 11B is a cross-sectional view of the flow regulating member 40 of the filter 4C of the third modification. Fig. 11C is a cross-sectional view of the mouth filter unit 42 of the filter 4C of the third modification. As shown in FIG. 11A to FIG. 11C, in the filter 4C of the third modification, the hollow passage 400 of the flow regulating member 40 is formed in a "three-hole form", and the powder supply path 421 in the suction port filter portion 42 is formed as "single". Hole form." Therefore, in the third modification, the hollow path 400 of the flow regulating member 40 and the powder supply path 421 in the suction filter unit 42 are disposed at positions that do not correspond to each other in the cross section of the filter 4C. By disposing the hollow passage 400 of the flow regulating member 40 and the powder supply passage 421 in the suction port filter portion 42 so as not to face each other, the hollow passage 400 of the flow regulating member 40 is rectified and guided to the main flow of the cavity 43. The flow of smoke (air flow) is temporarily in the cavity 43 In the case of confusion, the powder of the powdery substance 44 deposited in the cavity 43 can be easily rolled up, so that the powder of the powdery substance 44 is efficiently transported along with the flow of the mainstream smoke.

Fig. 12A is a longitudinal sectional view showing a filter 4D of the cigarette 1D of the fourth modification. Fig. 12B is a cross-sectional view of the flow regulating member 40 of the filter 4D of the fourth modification. Fig. 12C is a cross-sectional view of the mouth filter unit 42 of the filter 4D of the fourth modification. As shown in FIG. 12A to FIG. 12C, in the filter 4D of the fourth modification, the hollow passage 400 of the flow regulating member 40 is formed in the "8-hole form", and the powder supply path 421 in the suction port filter portion 42 is formed as " Three-hole form." Further, in the fourth modification, the hollow passage 400 of the flow regulating member 40 and the powder supply passage 421 in the suction port filter portion 42 are disposed at positions that do not correspond to the cross section of the filter 4D, and thus the passage of the rectifying member 40 can be performed. The flow of the mainstream smoke (air flow) that is rectified by the hollow path 400 and directed to the cavity 43 is temporarily disturbed within the cavity 43. As a result, the powder of the powdery substance 44 deposited in the cavity 43 can be easily rolled up, and the powder of the powdery substance 44 can be efficiently carried along with the flow of the mainstream smoke.

Further, the flow regulating member 40 in the above-described embodiments and modifications may be formed of a filter material formed into a rod shape. When the rectifying member 40 is formed of a rod-shaped filter medium, the density of the filter material corresponding to the portion of the hollow passage 400 may be relatively low to form a low-velocity resistance portion in the cross section of the filter medium, so that the ventilation is corresponding to the ventilation. The portion of the restricting portion 401 has a relatively high density of the filter material to form a high-ventilation resistance portion. Thereby, the mainstream smoke flowing from the upstream can be preferentially passed through the low-ventilation resistance portion of the rectifying member 40, and the mainstream smoke can be rectified while being introduced into the cavity 43. As described above, formed into When the rod-shaped filter medium forms the rectifying member 40, there is an advantage that the rectifying member 40 can be easily and inexpensively manufactured. Further, when the rectifying member 40 is provided as a function of filtering the filter material of the mainstream smoke as described above, the arrangement of the upstream filter portion 41 can be omitted, so that the number of manufacturing processes can be reduced. In addition, even when the upstream filter portion 41 is omitted as described above, the filter material is disposed on the entire cross section of the flow regulating member 40, so that the tobacco such as the tobacco rod 21 of the tobacco rod 2 on the upstream side of the flow regulating member 40 can be suppressed. The powdery object enters further downstream than the rectifying member 40.

Although the preferred embodiments of the present invention have been described above, the filter for smoking articles of the present invention can be implemented by combining the embodiments as much as possible.

Claims (13)

A smoking article comprising: a tobacco rod comprising shredded tobacco; and a filter connected to an end portion of the tobacco rod via an outer paper, the filter having a powder containing substance comprising at least a taste component and a flavor component Any one of the raw material powders is formed into a single piece, and a powder is formed by applying an external force; the cavity is provided with the powdery substance; and the rectifying member is connected to the upstream side of the cavity, and the pair is The mainstream smoke flowing from the upstream side is rectified to guide it to the aforementioned cavity. The smoking article according to claim 1, wherein the rectifying member has a low-ventilation resistance portion disposed at a portion of the cross section from the front end surface to the rear end surface and having a relatively low ventilation resistance; and from the front end surface to the rear side The end surface is disposed in the other portion of the cross section and has a high ventilation resistance portion having a higher ventilation resistance than the low ventilation resistance portion, and guides the mainstream smoke flowing from the upstream side through the low ventilation resistance portion to the cavity. The smoking article according to claim 2, wherein the rectifying member has: a hollow passage penetrating the rectifying member in the axial direction; and a ventilation restricting portion that is formed in a region other than the hollow passage and restricts circulation of the mainstream smoke The hollow path system corresponds to the aforementioned low ventilation resistance portion, and the aforementioned passage The gas restricting portion corresponds to the aforementioned high ventilation resistance portion. The smoking article according to claim 2, wherein the rectifying member is formed of a filter material formed into a rod shape, and the filter medium density of the low ventilation resistance portion is lower than the high ventilation resistance portion. The smoking article according to any one of claims 2 to 4, further comprising a suction filter unit, wherein the suction filter unit is connected to the downstream side of the cavity to apply the cavity and the suction end A powder supply path that is connected and used to supply the aforementioned powder from the aforementioned cavity to the aforementioned suction end is formed along the axial direction. The smoking article according to claim 5, wherein the powder supply path has a cross section capable of suppressing entry of the one-piece powder-containing material. The smoking article according to claim 5, wherein the low-velocity resistance portion of the flow regulating member and the powder supply path of the mouth filter portion are disposed in a cross section of the filter. Corresponding location. The smoking article according to claim 5, wherein the low-velocity resistance portion of the flow regulating member and the powder supply path of the suction filter portion are disposed in a cross section of the filter. Corresponding position. The smoking article according to any one of claims 2 to 8, wherein the low-ventilation resistance portion is disposed in a cross section of the rectifying member The area on the peripheral side of the face. The smoking article according to claim 9, wherein a plurality of the low-velocity resistance portions are disposed in a region on the outer peripheral side of the flow regulating member. The smoking article according to claim 10, wherein a plurality of the low-velocity resistance portions are arranged at regular intervals along a circumferential direction of the peripheral side region of the flow regulating member. The smoking article according to any one of claims 2 to 8, wherein the low-ventilation resistance portion is disposed in a central region of a cross section of the flow regulating member. A filter for a smoking article, comprising: a powder-containing material, wherein a raw material powder containing at least one of a taste component and a flavor component is formed into a single piece, and a powder is formed by applying an external force; The powder-containing material is disposed; and the flow regulating member is connected to the upstream side of the cavity, and rectifies the mainstream smoke flowing from the upstream side to guide the cavity.