KR20200094772A - Smoking articles and filters of smoking articles - Google Patents

Abstract

The filter 4 of the smoking article is a powder-containing material 44 in which a raw material powder containing at least one of the essential components and the perfume components is lumped, and a powder-containing material that becomes a powder by applying force and a powder-containing A suction filter formed along a axial direction of a cavity 43 in which water is disposed, and a powder supply passage 421 for communicating powder with the cavity and the intake end and supplying powder from the cavity to the intake end while being addressed to the downstream side of the cavity It has a part 42. The powder supply passage includes a central connection portion 4210 located at the center side of the cross section of the intake filter portion, and a plurality of hole portions 4211 extending in different directions from the central connection portion toward the outer circumferential side of the cross section.

Description

Smoking articles and filters of smoking articles

The present invention relates to smoking articles and filters for smoking articles.

Cigarettes that enjoy the taste, aroma, or both by sucking the powder in the filter are known. For example, in Patent Document 1, a raw material powder containing at least one of a refined ingredient and a perfume ingredient is a powder content containing a single mass, and a powder content that becomes a powder by applying an external force, and Disclosed is a smoking article having a filter including a cavity in which a powder-containing material is disposed and a passage through which the powder passes through the cavity and the inlet end.

Patent Document 1: International Publication No. 2016/181843

In the filter described in Patent Document 1, by making the inner diameter of the flow path of the powder smaller than the outer diameter of one lump of powder-containing material, it is possible to suppress powder spillage at which powder is spilled at unintended timing, such as during production and transportation. have.

Here, it is advantageous from the viewpoint of increasing the delivery amount (supply amount) of the powder as the cross-sectional area of the flow passage of the powder in the filter is increased. On the other hand, Patent Document 1 discloses an aspect in which a plurality of flow paths are penetrated in the axial direction through a filter on the intake side. Obviously, by arranging a plurality of flow paths with respect to the filter, since the total cross-sectional area of the flow paths of the powder increases, it is easy to ensure the delivery amount of the powder. However, when a plurality of flow paths are independently arranged in the cross section of the filter, it is necessary to manufacture a filter using a plurality of mandrels, and it becomes difficult to uniformly fill the filter fibers between each mandrel, making the production of filters There is a risk that the quality will become unstable.

Moreover, the said subject is not limited to a cigarette, but also applies to the whole smoking articles including smoking cigarettes, such as cigarettes, cigarettes, electronic devices heating or carbon heat sources, and smoking cigarettes of non-heating type cigarettes.

In view of the above-mentioned problem, the present invention relates to a filter for a smoking article capable of aspirating a powder containing at least one of a flavor component and a perfume component, while ensuring the delivery amount of the powder during suction. An object of the present invention is to provide a technique capable of suppressing powder leakage at the time of aspiration and stabilizing the manufacturing quality of the filter.

In order to solve the above-described problem, the present invention uses a raw material powder containing at least one of a rice bran component and a perfume component as a lump of powder-containing material that becomes a powder by applying an external force, and is formed in the mouthpiece filter section. The powder supply passage to be formed was formed to include a central connecting portion located at the center of the cross section of the intake filter portion, and a plurality of holes extending in different directions from the central connecting portion toward the outer circumferential side of the cross section.

More specifically, the smoking article according to the present invention includes a cigarette rod including flesh tobacco, and a filter connected to an end portion of the cigarette rod via a tip paper, wherein the filter comprises at least one of a netting component and a flavoring component. As a powder content containing one of the raw material powders in one mass, a powder content that becomes a powder by applying an external force, a cavity in which the powder content is disposed, and a speech on the downstream side of the cavity The powder supply passage for supplying the powder from the cavity to the intake end while communicating with the cavity and the intake end has an intake filter section formed along an axial direction, and in the cross section of the intake filter section, the powder supply The furnace includes a central connection portion located at the center side of the cross section of the intake filter portion, and a plurality of hole portions extending in different directions from the central connection portion toward the outer circumferential side of the cross section.

Smoking articles include cigarettes, cigars, cigarillos, electronic devices heating or carbon heat sources, or the like, for smoking or inhaling cigarettes or flavors, and non-heating types of cigarettes or flavors, or both Smoking port for sucking is illustrated.

In addition, the opening portion of the powder supply passage may have a relatively large opening width in the outer circumferential region located on the outer circumferential side of the cross section of the intake filter portion compared to the central lateral region located on the center side of the cross section.

In addition, the said powder supply path may contain 3 or more and 5 or less of the said hole parts.

Further, in the powder supply passage, a plurality of the hole portions may extend radially from the central connection portion.

Further, in the cross section of the suction filter part, a filter fiber forming the suction filter part may be interposed between the tip of the hole in the powder supply path and the winding paper of the suction filter part.

Here, the present invention may be specified as a filter for the smoking article described above. Specifically, the filter of the smoking article according to the present invention is a powder content containing a raw material powder containing at least one of the essential component and the perfume component as a lump, and a powder content containing a powder by applying an external force, A cavity in which the powder-containing material is disposed, and is addressed to a downstream side of the cavity, communicating with the cavity and the mouth end, and a powder supply passage for supplying the powder from the cavity to the mouth end along the axial direction It is provided with the formed intake filter part, and in the cross section of the intake filter part, the powder supply path extends in different directions toward the outer circumferential side of the cross section from the central connection part located at the center side of the cross section of the intake filter part. It includes a plurality of holes.

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

According to the present invention, a filter of a smoking article capable of aspirating a powder containing at least one of a flavor component and a flavor component at a predetermined timing by a smoker, is provided while ensuring the delivery amount of the powder during suction. The flow of powder at the time of suction can be suppressed, and the production quality of the filter can be stabilized.

1 is a view showing an external perspective view of a cigarette according to the first embodiment.
2 is a view showing a longitudinal sectional view of a main portion of a cigarette according to the first embodiment.
3 is a diagram showing a cross-sectional shape of a powder supply path in a cross section of the intake filter unit according to the first embodiment.
4 is a view showing the results of evaluation tests for the amount of powder delivery and the amount of powdered spills according to Examples and Comparative Examples.
It is a figure which shows the shape of the powder supply path which concerns on an Example and a comparative example.
It is a figure which shows the smoker used for the measurement of a powder delivery amount in an Example and a comparative example.
7 is a view showing a longitudinal sectional view of a main portion of a cigarette according to the second embodiment.
8 is a view showing a longitudinal sectional view of a main portion of a cigarette according to the third embodiment.

Hereinafter, the embodiment of the cigarette with a filter which is an example of the smoking article which concerns on this invention is demonstrated in detail with reference to drawings. The dimensions, materials, shapes, relative arrangements, and the like of the components described in this embodiment are not intended to limit the technical scope of the invention to them only, unless otherwise specified.

<Embodiment 1>

1 is an external perspective view of a cigarette 1 according to the first embodiment. 2 is a longitudinal sectional view of a main portion of the cigarette 1 according to the first embodiment. The cigarette 1 is a cigarette with a filter having a cigarette rod 2 and a filter 4 connected to one end of the cigarette rod 2 via a tip paper 3.

The cigarette rod 2 is formed by rolling the cigarette 21 into a cylindrical shape (rod shape) by winding it with a roll 22. The filter 4 is a member for filtering smoke components contained in the mainstream smoke when the mainstream smoke generated during smoking of the cigarette 1 is passed, and is substantially the same diameter as the cigarette rod 2. It is molded into a cylindrical shape.

The filter 4 is wound around the winding paper 45 and the tip paper 3, and is connected to the rear end side of the cigarette rod 2 via the tip paper 3. The tip paper 3 connects (connects) them by integrally winding the end of the cigarette rod 2 and the filter 4. Hereinafter, in the longitudinal direction (axial direction) of the tobacco rod 2, the end connected to the filter 4 is referred to as a "rear end", and the opposite end is referred to as a "front end" (a leading end). In addition, in the longitudinal direction (axial direction) of the filter 4, the end connected to the tobacco rod 2 is called "shear", and the end opposite to the front end is called "intake end". In addition, the cross section along the longitudinal direction (axial direction) of the cigarette 1 (tobacco rod 2, filter 4) is defined as a "longitudinal cross section", and a cross section in a direction orthogonal thereto is defined as a "cross section" do. In addition, "upstream" and "downstream" mean a relative positional relationship based on the flow of mainstream smoke. In addition, the symbol CL shown in FIG. 2 represents the central axis of the cigarette 1 (cigarette rod 2 and filter 4).

The filter 4 includes an upstream filter portion 41 connected to the rear end side of the cigarette rod 2, an intake filter portion 42 located at the intake end side, an upstream filter portion 41 and an intake filter portion 42. It is a structure including the cavity 43 formed in the cavity, and the powder content 44 accommodated in the cavity 43. The powder-containing material 44 is a lump of a raw material powder containing at least one of a flavor component and a perfume component, and is powdered by being crushed by a smoker.

The upstream filter portion 41 and the intake filter portion 42 are formed of, for example, filter fibers such as acetate in a cylindrical shape, and the upstream filter portion 41 and the intake filter portion are wound by a winding paper 45. (42) is wound integrally. The winding paper 45 used for the filter 4 may be a winding paper having air permeability used for a general product, or may be one having no air permeability. As the material of the winding paper 45, paper made of vegetable fibers is generally used, but a sheet using polymer fibers (polypropylene, polyethylene, nylon, etc.) or a polymer sheet may be used, Moreover, you may use metal foil, such as an aluminum foil. In addition, a so-called non-wrap filter may be used for the filter 4. The non-wrap filter has a filter material and an outer skin layer for forming the filter material into a cylindrical shape, and this outer skin layer can be obtained by thermoforming the filter material. When a non-wrap filter is used, the winding paper can be omitted.

In the intake filter part 42 located on the inlet end side, a powder supply passage 421 is provided to penetrate the intake filter part 42 in the axial direction, and the cavity 43 and the powder supply passage 421 are provided. The intake team is in communication. In addition, the filter 4 is wound up by the tip paper 3, thereby being integrally connected to the cigarette rod 2.

As the tip paper 3, a paper made of vegetable fibers is generally used, but a sheet made of polymer fibers (polypropylene, polyethylene, nylon, etc.) or a polymer sheet may be used, and aluminum foil may be used. You may use metal foil, such as. Moreover, the filter 4 may contain a fragrance such as menthol. The method of flavoring the fragrance is not particularly limited, but for example, a string-like substance adsorbing the fragrance is disposed in the filter 4, or the fragrance of the filler in the filter 4 is contained, or the capsule is used. A method is known in which a material in which a perfume such as a substance is immobilized is placed on the filter 4.

In the tip paper 3, at a position corresponding to the cavity 43, a plurality of ventilation holes (hereinafter referred to as "cavity area ventilation holes") for diluting the mainstream smoke by introducing air for ventilation (external air) into the filter 4 ) (31) is formed in an annular shape. In this case, for the winding paper 45, by using an appropriate winding paper having a high air permeability, air introduced from the outside through the cavity area vent hole 31 of the tip paper 3 is transmitted through the cavity 43 inside. I can do it. Thereby, there is an advantage that the strength of the winding paper 45 increases and it becomes difficult to bend. However, the winding paper 45 may have air permeability or a low air permeability. In that case, in the winding paper 45, it is sufficient to open the ventilation hole at a position corresponding to the cavity area ventilation hole 31. In addition, in this embodiment, it is preferable to use a pre-opening tip paper in which a cavity region vent hole 31 is previously formed in the tip paper 3. Thereby, there is no fear of damaging the powder content 44 disposed in the cavity 43 compared to the case where the cavity region ventilation hole 31 is formed by, for example, an on-machine laser. In addition, by adjusting the opening area of the cavity area ventilation hole 31 (total opening area when multiple cavity area ventilation holes 31 are arranged), the Vf value (the ratio of air inflow from the filter to the total ventilation flow rate) Can be adjusted. The tar value of the cigarette is designed by the Vf value, and the powder formed by crushing the powder-containing material 44 can deliver the powder as much as possible.

The cavity 43 is a space formed inside the filter 4, and specifically, by the surface at the rear end of the upstream filter unit 41 and the surface at the front end of the intake filter unit 42 and the winding paper 45. It is an enclosed cylindrical space. The cavity 43 may have a size capable of providing the powder-containing material 44. When a plurality of powder inclusions 44 are provided, the cavity 43 needs to be sized to accommodate a plurality of powder inclusions 44. In addition, the shape of the cavity 43 is not particularly limited.

The powder-containing material 44 is a sphere in which a raw material powder is a lump, and becomes a powder by applying an external force. The external force is, for example, a force stronger than a force exerted during manufacturing or transportation, or a force stronger than a suction force when smoking. As the external force, a force (crushing force) exerted by the smoker with a finger is exemplified. For example, the breaking strength at which the powder-containing material 44 becomes a powder is 5N or more and 60N or less. Preferably, the breaking strength at which the powder-containing material 44 becomes a powder is 20 N or more and 30 N or less, more preferably 20 N or more and 25 N or less. In addition, the shape of the powder-containing material 44 is not particularly limited, and may be an ellipsoid, a cylinder, a hollow cylinder, a cone, a pyramid, a torus, a polyhedron such as a cube or a cuboid, or a combination of such shapes. In addition, the raw material powder constituting the powder-containing material 44 has a particle diameter at least partially capable of passing through the powder supply passage 421. For example, the particle diameter of the raw material powder may be set in a range of 10 µm to 300 µm.

The powder-containing material 44 can be produced by adding an appropriate amount of water to a nucleating agent as a raw material powder, mixing it, molding it, and drying it. Further, a binder may be added as a raw material for the powder-containing material 44. Moreover, you may add fragrance with water with respect to a nucleating agent. As the nucleating agent, monosaccharides, disaccharides, polysaccharides or derivatives thereof can be used. For example, ketotriose (dihydroxyacetone), aldotriose (glyceraldehyde), ketotetrose (erythrulose), aldotetose (erythrose, throse), pentose ketopento Ose (ribose, xylulose) aldopentose (ribose, arabinose, xylose, lyxose), deoxysugar (deoxyribose) ketohexose (psicose, fructose) , Sorbose, Tagatose), Aldohexose (Allose, Altrose, Glucose, Mannose, Gulose, Idose, Galactose, Talos), Deoxysugar (Fucose, Fuclose, Rhamnose) ), Sedoheptulose, sucrose, lactose, maltose, trehalose, turanose, cellobiose, raffinose, melezitose, maltotriose, acarbose, stachyose, glucose, starch (amylose) , Amylopectin), cellulose, dextrin, glucan, fructose, and the like. These monosaccharides, disaccharides, polysaccharides, or derivatives thereof may be used alone or in combination. It is preferable that the nucleating agent is substantially soluble in the oral cavity.

As the binder, water-soluble polymers such as dextrin, gelatin, arabic gum, polyvinyl alcohol, and carboxymethylcellulose can be used. It is preferable that it is 10 wt% or less with respect to a nucleating agent as an addition amount of a binder.

The fragrance added to the nucleating agent is not particularly limited, and conventional fragrances can be used, but powder fragrances and oily fragrances are particularly suitable. As a main powder fragrance, the thing made from chamomile, fenegrick, menthol, mint, cinnamon, herbs, etc. is mentioned as a powder. In addition, as the main oily fragrance, lavender, cinnamon, cardamom, celery, cloves, cascarilla, nut mac, sandalwood, bergamot, geranium, honey essence, rose oil, vanilla, lemon, orange, mint, cinnamon, caraway , Cognac, jasmine, chamomile, menthol, casilla, ylang-ylang, sage, spearmint, fennel, pimento, ginger, anise, coriander and coffee. These powder fragrances and oily fragrances may be used alone or in combination. When using a powder fragrance, the particle size is preferably 500 µm or less. It is preferable that the fragrance is substantially soluble in liquid or oral cavity. Moreover, it is preferable that the addition amount of a fragrance component is 10 wt% or less with respect to a nucleating agent.

As the essential components, citric acid, tartaric acid, glutamic acid Na, neotam, tomatine, stevia, sorbitol, xylitol, erythritol, aspartame, rutin, hesperidin, oxalic acid, tannic acid, catechin, naringine, quinine, queen acid, limonine, caffeine , Capsaicin, vitamins, amino acids, polyphenols, alginic acid, flavonoids, lecithin, and the like. It is preferable that the essential component is substantially soluble in liquid or oral cavity. It is preferable that the addition amount of the essential rice component is 10 wt% or less with respect to the nucleating agent. In addition, the powder-containing material 44 may be a plastic capsule containing a powder, a tablet-formed body, or granules.

Here, FIG. 3 is a diagram showing a cross-sectional shape of the powder supply passage 421 in the cross section of the intake filter section 42 according to the first embodiment. As shown in FIG. 3, the cross section of the powder supply path 421 in this embodiment is formed as an opening which has one windmill shape as a whole. More specifically, in the cross section of the intake filter part 42, the powder supply passage 421 has a central connection part 4210 located at the center side of the cross section of the intake filter part 42, and this central connection part 4210 It is formed from a plurality of hole portions 4211 that extend from the intake filter portion 42 toward the outer circumferential side. Here, the opening area of each hole portion 4211 is relatively larger than the opening area of the central connection portion 4210.

The plurality of hole portions 4211 in the powder supply passage 421 each have a wing shape and extend radially from the central connection portion 4210 in different directions. Further, the tip of each hole portion 4211 (the end portion on the side opposite to the central connection portion 4210) is disposed at a position separated from the winding paper 45 of the intake filter portion 42, Filter fibers forming the intake filter portion 42 are interposed between the tip of each hole portion 4211 and the winding paper 45. In the example shown in FIG. 3, in the powder supply passage 421, three hole portions 4211 from the central connection portion 4210 extend radially toward the outer circumferential side. In addition, the opening width of each hole portion 4211 in the powder supply passage 421 gradually widens from the base end (end portion on the side connected to the central connection portion 4210) toward the tip end side. Therefore, each hole portion 4211 in the powder supply passage 421 has an outer circumferential region 4211a located on the outer circumferential side of the cross section of the intake filter portion 42, and a central side region ( The aperture width is relatively wide (large) compared to 4211b).

<effect>

In the cigarette 1 according to the present embodiment, the powder supply passage 421 of the intake filter portion 42 has a cross section through which the bulk powder-containing material 44 cannot pass. Due to this, the bulk powder content 44 disposed in the cavity 43 does not pass through the powder supply path 421, and the bulk powder content 44 is passed through the powder supply path 421. It is possible to suppress the discharge from the filter 4. On the other hand, the smoker exerts external force or the like to crush the lumpy powder-containing material 44, so that the powder-containing material 44 is in a powder form, so that the powder of the powder-containing material 44 passes through the powder supply passage 421. I can do it. As a result, the smoker can easily aspirate the powder at any preferred timing, and can obtain the taste by the flavor component, the flavor by the perfume component, or both.

Further, according to the powder supply passage 421 in the present embodiment, a plurality of hole portions 4211 toward the outer circumference side starting from the center connection portion 4210 located at the center side of the cross section of the intake filter portion 42 is started. Are serialized in different directions. Here, the larger the cross-sectional area of the powder supply path 421 is, the more advantageous it is from the viewpoint of increasing the delivery amount (supply amount) of the powder at the time of suction of the smoker, but only increasing the cross-sectional area of the powder supply path 421 As a result, unintended spillage of powder (flour spillage) when the smoker is not aspirating is also likely to occur. The above-mentioned unintentional powder spill is, for example, when the smoker grips the intake side of the filter 4 in a downward facing state without the filter 4 biting the mouth. ) Through which the powder spills out.

On the other hand, according to the powder supply path 421 of the present embodiment, the plurality of hole portions 4211 are directed in different directions from the central connecting portion 4210 located at the center side of the cross section of the intake filter portion 42 toward the outer circumferential side. By extending them in a manner, in the cross section of the intake filter portion 42, the opening area can be dispersed and arranged on the outer circumferential side without concentrating at one place. By doing so, after crushing the bulk powder-containing material 44 into a powder form, the intention at the time of non-suction while securing the total opening area sufficient to sufficiently secure the delivery amount (supply amount) of the powder during suction is achieved. Powder spillage of unused powder can be suppressed. Particularly, in the powder supply passage 421 in this embodiment, since the plurality of hole portions 4211 are radially directed toward the outer circumference from the central connection portion 4210, in the cross section of the intake filter portion 42, It is possible to disperse and arrange the opening region more appropriately, to properly suppress the unintended flow of powder after pulverization of the powder-containing material 44, and to ensure the delivery amount of the powder during suction is more secured. Lose.

Here, when the smoker bites the filter 4 of the cigarette 1 into the mouth and sucks it, the powder of the powder inclusions 44 after crushing in the cavity 43 is on the outer circumferential side of the cavity 43 ( It is stacked on the winding paper (45). Therefore, it is advantageous from the viewpoint of increasing the delivery amount of the powder at the time of suction, by dispersing the opening area of the powder supply path 421 to the outer circumferential side of the mouth-end filter portion 42 a lot. On the other hand, according to the powder supply passage 421 of this embodiment, since the central connecting portion 4210 is made relatively small and the opening area of each hole 4211 is formed to be larger than the central connecting portion 4210, it is sucked. It is possible to increase the delivery amount of the powder in poetry. In addition, in each of the hole portions 4211 in the powder supply passage 421, the outer circumferential side region 4211a has a relatively wide opening width compared to the central side region 4211b, so that the intake filter portion 42 ), it becomes easy to ensure the size of the opening area on the outer circumferential side. As a result, the delivery amount of the powder at the time of suction can be further increased.

Next, the number of the hole portions 4211 in the powder supply passage 421 will be described. Here, by setting the number of the holes 4211 to three or more, it is possible to reduce variations in the delivery amount of the powder at the time of aspiration due to the posture that the smoker grips the filter 4. That is, by addressing the three or more hole portions 4211 from the central connection portion 4210, the powder can be stably delivered at the time of suction even if the filter 4 is held in any position. Moreover, in the powder supply path 421 of this embodiment, each hole part 4211 is provided for every fixed angle (120 degrees) in the circumferential direction of the intake filter part 42. In other words, each hole portion 4211 extends radially from the central connection portion 4210 at equal intervals in the circumferential direction of the intake filter portion 42. Thereby, regardless of the posture that the smoker holds the filter 4, it is possible to stably deliver the powder upon suction.

In addition, although the upper limit number of the hole part 4211 in the powder supply path 421 is not specifically limited, when the number of the hole parts 4211 is 6 or more, most of the intake filter parts 42 become an opening area. There is a concern that the effect of suppressing powder spillage during non-aspiration may be lowered. Therefore, from the viewpoint of suppressing the unintended outflow of powder at the time of non-suction while sufficiently ensuring the delivery amount of the powder at the time of suction, the number of hole portions 4211 extending from the central connection portion 4210 is 3 It is preferable to use 5 or more pieces.

In addition, the tip of each hole portion 4211 in the powder supply path 421 is separated from the winding paper 45 of the intake filter portion 42, and the tip and winding paper 45 of each hole portion 4211 ), filter fibers are present. Thus, by forming the hole portion 4211 in a manner that does not extend until the tip of the hole portion 4211 contacts the winding paper 45, the edge portion (outermost portion) of the intake filter portion 42 is not opened For this reason, it is possible to further suppress unintended powder spillage during non-aspiration.

In addition, in the powder supply path 421 in the present embodiment, the base ends of the plurality of hole portions 4211 are connected to each other by the central connection portion 4210, and are formed as one opening. For this reason, in the manufacture of the intake filter part 42, the intake filter part 42 can be manufactured using a single mandrel, excluding the powder supply passage 421 in the cross section of the intake filter part 42. For the region, the filter fibers can be uniformly filled. That is, the manufacturing quality of the intake filter part 42 can be stabilized.

The circumferential length of the filter 4 in the present embodiment is preferably 16 mm to 25 mm, and more preferably 22 to 25 mm. Further, the powder supply passage 421 is easy to suck the powder on the short side, but if the length of the intake filter part 42 is excessively short, the precision when it is integrally connected to the upstream filter part 41 by the winding paper 45 There is a risk of deterioration. For this reason, the length of the intake filter part 42 is preferably in the range of 5 mm to 15 mm, and more preferably in the range of 7 to 10 mm. In addition, the upstream filter portion 41 is the total length (27 to 30 mm) minus the length of the cavity 43 and the length of the powder supply passage 421, and is preferably in the range of 6 mm to 17 mm, 11 It is more preferable to set it as the range of -17 mm.

In addition, the diameter of the bulk powder-containing material 44 arranged in the cavity 43 is not particularly limited as long as it is smaller than the diameter and length of the cavity 43, but the bulk powder-containing material with respect to the volume of the cavity 43 When the ratio of the volume of (44) is large, the powder can be made to accumulate higher when the bulk powder-containing material 44 is crushed, so that it is easy to deliver during suction. Therefore, when the length of the cavity 43 is 6 mm, an example in which the diameter of the bulky powder-containing material 44 is 4 mm or more and less than 6 mm is exemplified.

Here, if some combinations of the lengths of the respective portions in the filter 4 are illustrated, when the total length of the filter 4 is 27 mm, the upstream filter portion 41 is 14 mm, the cavity 43 is 6 mm, The intake filter portion 42 may be 7 mm. Similarly, when the total length of the filter 4 is 27 mm, the upstream filter portion 41 may be 11 mm, the cavity 43 may be 6 mm, and the intake filter portion 42 may be 10 mm. In addition, when the total length of the filter 4 is 30 mm, the upstream filter portion 41 may be 17 mm, the cavity 43 may be 6 mm, and the intake filter portion 42 may be 7 mm. In addition, when the total length of the filter 4 is 30 mm, the upstream filter portion 41 may be 14 mm, the cavity 43 may be 6 mm, and the intake filter portion 42 may be 10 mm.

In addition, it is preferable that the winding paper 45 of the filter 4 selects a specification such that when a smoker exerts an external force on the lumpy powder-containing material 44 and crushes it, it is difficult to bend or wrinkle. . For example, the basis weight of the winding paper 45 is preferably 50 to 200 g/m ² , and more preferably 50 to 110 g/m ² . Moreover, it is preferable that the air permeability of the winding paper 45 is 1000-10000 [CU]. In addition, when using the free-opening tip paper in which the cavity region vent hole 31 is previously formed in the tip paper 3, the air permeability of the winding paper 45 is preferably 200 to 3000 [CU].

<Example>

Next, the present invention will be described more specifically by examples, but the present invention is not limited to the description of the following examples as long as the gist is not exceeded. The cigarette 1 described above was produced, and an evaluation test was conducted to measure the amount of powder delivery upon suction and the amount of powder spilled during non-aspiration. In the filter 4 of the cigarette 1 used in the evaluation test, the length of the upstream filter portion 41 was 14 mm, the length of the cavity 43 was 7 mm, and the length of the intake filter portion 42 was 6 mm. Further, after crushing the powder-containing material 44, a state was assumed, and the raw material powder of the powder-containing material 44 was accommodated in the cavity 43. As a raw material powder for the powder-containing material 44, lactose 50 mg (DFE Pharma's Pharmatose 100M) was used.

Fig. 4 shows the results of the evaluation tests of the powder delivery amount and the powder discharge amount according to Examples and Comparative Examples. The subjects of the evaluation test were Examples 1 to 5 and Comparative Examples 1 and 2. Fig. 5 shows the shape of the powder supply passages according to Examples and Comparative Examples. Comparative Example 1 is a center hole filter in which the intake filter portion has a single powder supply path. In Comparative Example 2, three powder supply passages were formed through the intake filter part in the axial direction.

The smoker shown in FIG. 6 was used for the measurement of the powder delivery amount. In this example, a single (one-by-one) hook smoker manufactured by Borgwaldt was used to perform aspiration experiments without ignition, and the powder delivery amount was measured. In the suction experiment, the suction flow rate was 35 mL/2 sec, the number of suction times was five, and the number of measurements was three. In addition, the amount of powder delivery was calculated by removing the powder collecting pad (Cambridge pad) each time with suction, measuring the weight by electronic balance, and calculating the weight difference before and after suction. In addition, in the measurement of the powder flow rate, 80% by weight of lactose is contained in water, and after molding into a spherical shape having a weight of 50 mg and a diameter of 4.5 mm, 5 minutes at 25°C, 4 minutes at 70°C, 4 minutes at 200°C, stepwise The powder content prepared by drying was used. In the test for measuring the amount of powdered spills, the filter side was turned downward in the form of a cigarette, and after crushing the bulky powder-containing material 44, vibration was given 5 times, and the weight of the powdered spills was measured by electronic balance. The number of measurements was performed at three.

As shown in the test results of Fig. 4, compared to Comparative Example 1, which has a single center hole as a powder supply path, there is no significant difference in the amount of powder spilled in any of the examples, whereas the delivery amount of powder is more than that of Comparative Example 1. It turned out that I could secure a lot. In addition, with respect to Comparative Example 2 having three independent powder supply paths, in each Example, no significant difference was found between either the delivery amount of the powder or the amount of powder spilled. However, in Comparative Example 2, since three powder supply paths are independent, it is necessary to manufacture an intake filter unit using three mandrels, and it can be said that it is difficult to uniformly fill filter fibers between each mandrel. Therefore, each Example is superior in comparison to Comparative Example 2 in that it is possible to provide an intake filter unit having stable quality.

<Embodiment 2>

Next, the cigarette 1A according to the second embodiment will be described. Here, the difference from the cigarette 1 of Embodiment 1 shown in FIGS. 1 to 3 will be mainly described. 7 is a schematic configuration diagram of a cigarette 1A according to the second embodiment. The filter 4 of the cigarette 1A is a vent hole (hereinafter referred to as "upstream filter part area vent hole") at a position corresponding to the upstream filter part 41 among the tip paper 3 and the winding paper 45. ) 31A is provided through.

<Embodiment 3>

Next, the cigarette 1B according to the third embodiment will be described. Here, the difference between the cigarette 1 of the first embodiment shown in FIGS. 1 to 3 and the cigarette 1A of the second embodiment shown in FIG. 7 will be mainly described. 8 is a schematic configuration diagram of a cigarette 1B according to the third embodiment. The filter 4 of the cigarette 1B is provided with a cavity area ventilation hole 31 shown in FIG. 2 and an upstream filter section area ventilation hole 31A shown in FIG. 7 in the tip paper 3.

The filter 4 of the cigarette 1B according to the present embodiment is provided with vent holes for introducing air for dilution in both the cavity 43 and the upstream filter portion 41, so air from them By adjusting the balance of the inflow amount, it is possible to change the delivery amount of the powder (for example, fragrance powder) formed by breaking the powder inclusion 44 without changing the Vf value of the entire filter 4. Thereby, for example, it becomes possible to optimally design the taste (fineness) strength of the perfume powder while keeping the tar value of the cigarette 1B constant.

As mentioned above, although the preferable embodiment of this invention was described, the filter of the smoking article which concerns on this invention can be implemented by combining each embodiment as much as possible.

One… cigarette
2… Cigarette load
3… Tip paper
4… filter
41… Upstream filter part
42… Intake filter part
43… Cavity
44… Powder inclusions
45… Winding paper
421... Powder supply furnace
4210... Central connection
4211 ... Hole

Claims (6)

Tobacco rods, including tobacco,
It is provided with a filter which is connected to the end of the tobacco rod through the tip paper (介在),
The filter,
A powder containing a raw material powder containing at least one of the essential ingredient and the perfume ingredient as a lump, and a powder containing material that becomes a powder by applying an external force,
A cavity in which the powder content is disposed,
The powder supply passage for supplying the powder from the cavity to the intake end while communicating with the intake end with the cavity is provided on the downstream side of the cavity. Intake filter part formed along
Have,
In the cross section of the intake filter portion, the powder supply passage includes a central connection portion located at the center side of the cross section of the intake filter portion, and a plurality of hole portions extending in different directions from the center connection portion toward the outer circumferential side of the cross section. ) Containing,
Smoking goods. The method according to claim 1,
The hole portion in the powder supply passage, the outer circumferential region located on the outer circumferential side of the cross section of the intake filter portion, the opening width is relatively larger than the central side region located on the center side of the cross section,
Smoking goods. The method according to claim 1 or claim 2,
The said powder supply passage contains 3 or more and 5 or less said said hole part, The smoking article. The method according to any one of claims 1 to 3,
In the powder supply passage, a plurality of the hole portions extend radially from the central connection portion,
Smoking goods. The method according to any one of claims 1 to 4,
In the cross section of the intake filter section, a filter fiber forming the intake filter section is interposed between the tip of the hole section of the powder supply path and the winding paper of the intake filter section.
Smoking goods. A powder containing a raw material powder containing at least one of the essential components and a perfume component as a lump, and a powder containing a powder by applying an external force,
A cavity in which the powder content is disposed,
The intake filter part which is addressed to the downstream side of the cavity, communicates with the cavity and the intake end, and a powder supply passage for supplying the powder from the cavity to the intake end along the axial direction
Equipped with,
In the cross section of the intake filter section, the powder supply path includes a central connection section located at the center side of the cross section of the intake filter section and a plurality of hole sections extending in different directions from the center connection section toward the outer circumferential side of the cross section.
Filter for smoking articles.

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