JPWO2019123645A1 - Smoking Goods and Smoking Goods Filters - Google Patents

Abstract

The filter (4) for smoking articles is a powder-containing material (44) in which a raw material powder containing at least one of a taste component and a fragrance component is lumped, and contains a powder that becomes a powder by applying force. A powder supply path (43) in which a substance and a powder-containing substance are arranged, and a powder supply path (43) connected to the downstream side of the cavity to communicate the cavity and the mouthpiece end and to supply powder from the cavity to the mouthpiece end. 421) has a mouthpiece filter portion (42) formed along the axial direction. The powder supply path includes a central connection portion (4210) located on the central side of the cross section of the mouthpiece filter portion, and a plurality of holes (4211) extending from the central connection portion toward the outer peripheral side of the cross section in different directions. ..

Description

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

Cigarettes are known to enjoy the taste, aroma, or both by sucking the powder in the filter. For example, Patent Document 1 describes a powder-containing material containing a raw material powder containing at least one of a taste component and a fragrance component as a lump, and the powder-containing material which becomes a powder by applying an external force. A smoking article is disclosed that comprises a filter comprising a cavity in which the powder-containing material is arranged and a flow path through which the powder passes through the cavity and the mouthpiece end.

International Publication No. 2016/181843

In the filter described in Patent Document 1, the inner diameter of the flow path of the powder is made smaller than the outer diameter of the powder-containing material in a mass, so that the powder spills at an unintended timing such as during manufacturing or transportation. It is possible to prevent powder spills.

Here, increasing the cross-sectional area of the powder flow path in the filter is advantageous from the viewpoint of increasing the powder delivery amount (supply amount). On the other hand, Patent Document 1 discloses an embodiment in which a plurality of flow paths are axially penetrated through a filter on the mouthpiece side. Certainly, by arranging a plurality of flow paths with respect to the filter, the total cross-sectional area of the powder flow paths increases, so that it becomes easy to secure the powder delivery amount. However, in order to independently arrange a plurality of flow paths in the cross section of the filter, it is necessary to manufacture the filter using a plurality of mandrels, and it becomes difficult to uniformly fill the filter fibers between each mandrel. , There is a risk that the manufacturing quality of the filter will become unstable.

The above-mentioned problems are not limited to cigarettes, but also apply to smoking equipment such as cigars, cigarillos, electronic device heating or carbon heat sources, and smoking articles in general, including non-heated cigarette smoking equipment.

In view of the above problems, the present invention relates to a filter for smoking articles capable of sucking powder containing at least one of a taste component and a fragrance component, and non-sucking while ensuring a powder delivery amount at the time of suction. An object of the present invention is to provide a technique capable of suppressing powder spillage at time and stabilizing the manufacturing quality of a filter.

In order to solve the above-mentioned problems, the present invention uses a raw material powder containing at least one of a taste component and a fragrance component as a mass powder-containing substance which becomes a powder by applying an external force, and a mouthpiece filter unit. The powder supply path formed in the above includes a central connection portion located on the central side of the cross section of the mouthpiece filter portion and a plurality of holes extending from the central connection portion toward the outer peripheral side of the cross section in different directions. I tried to form it.

More specifically, the smoking article according to the present invention comprises a tobacco rod containing tobacco engraving and a filter connected to the end of the tobacco rod via a tip paper, wherein the filter comprises a taste component. A powder-containing product in which a raw material powder containing at least one of the fragrance components is agglomerated, and becomes a powder by applying an external force, a cavity in which the powder-containing material is arranged, and the cavity. With a mouthpiece filter unit which is continuously provided on the downstream side of the above and has a powder supply path for communicating the cavity and the mouthpiece end and supplying the powder from the cavity to the mouthpiece end along the axial direction. In the cross section of the mouthpiece filter portion, the powder supply path is directed toward the central connection portion located on the center side of the cross section of the mouthpiece filter portion and the outer peripheral side of the cross section from the center connection portion. Includes a plurality of holes extending in different directions.

Smoking items include cigarettes, cigars, cigarettes, smoking devices that inhale the taste and flavor of cigarettes by heating electronic devices or carbon heat sources, or both, and non-heated tobacco tastes and flavors, or both. Smoking equipment is illustrated.

Further, in the hole portion in the powder supply path, the opening width of the outer peripheral side region located on the outer peripheral side of the cross section of the mouthpiece filter portion is relative to that of the central side region located on the central side of the cross section. It may be large.

Further, the powder supply path may include the holes of 3 or more and 5 or less.

Further, in the powder supply path, a plurality of the holes may extend radially from the central connection portion.

Further, in the cross section of the mouthpiece filter portion, filter fibers forming the mouthpiece filter portion are interposed between the tip of the hole portion of the powder supply path and the winding paper of the mouthpiece filter portion. Is also good.

Here, the present invention may be specified as a filter for the above-mentioned smoking articles. Specifically, the filter for smoking articles according to the present invention is a powder-containing material containing at least one of a taste component and a fragrance component as a lump, and can be made into a powder by applying an external force. The powder-containing material, the cavity in which the powder-containing material is arranged, and the downstream side of the cavity are connected to each other to communicate the cavity and the mouthpiece end and supply the powder from the cavity to the mouthpiece end. The powder supply path is provided with a mouthpiece filter portion formed along the axial direction, and in the cross section of the mouthpiece filter section, the powder supply path is located on the center side of the cross section of the mouthpiece filter section. It includes a central connecting portion located and a plurality of holes extending from the central connecting portion toward the outer peripheral side of the cross section in different directions.

The means for solving the problems in the present invention can be adopted in combination as much as possible.

According to the present invention, with respect to a filter for smoking articles in which a smoker can inhale powder containing at least one of a taste component and a fragrance component at an arbitrary timing, the amount of powder delivered at the time of inhalation is ensured. However, powder spillage during non-suction can be suppressed, and the manufacturing quality of the filter can be stabilized.

FIG. 1 is a diagram showing an external perspective view of the cigarette according to the first embodiment. FIG. 2 is a view showing a vertical cross-sectional view of a main part of the cigarette according to the first embodiment. FIG. 3 is a diagram showing a cross-sectional shape of the powder supply path in the cross section of the mouthpiece filter portion according to the first embodiment. FIG. 4 is a diagram showing the results of an evaluation test of powder delivery amount and powder spill amount according to Examples and Comparative Examples. FIG. 5 is a diagram showing the shapes of the powder supply paths according to the examples and the comparative examples. FIG. 6 is a diagram showing a smoker used for measuring the powder delivery amount in Examples and Comparative Examples. FIG. 7 is a view showing a vertical cross-sectional view of a main part of the cigarette according to the second embodiment. FIG. 8 is a view showing a vertical cross-sectional view of a main part of the cigarette according to the third embodiment.

Hereinafter, an embodiment of a cigarette with a filter, which is an example of a smoking article according to the present invention, will be described in detail with reference to the drawings. Unless otherwise specified, the dimensions, materials, shapes, relative arrangements, and the like of the components described in the present embodiment are not intended to limit the technical scope of the invention to those alone.

<Embodiment 1>
FIG. 1 is an external perspective view of the cigarette 1 according to the first embodiment. FIG. 2 is a vertical sectional view of a main part of the cigarette 1 according to the first embodiment. The cigarette 1 is a cigarette with a filter including a tobacco rod 2 and a filter 4 connected to one end of the tobacco rod 2 via a chip paper 3.

The tobacco rod 2 is formed by winding the tobacco carving 21 with a rolling paper 22 and forming it into a columnar shape (rod shape). 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 through, and is formed into a columnar shape having substantially the same diameter as the tobacco rod 2. Has been done.

The filter 4 is wound by a take-up paper 45 and a chip paper 3, and is connected to the rear end side of the tobacco rod 2 via the chip paper 3. The chip paper 3 connects (connects) the end of the tobacco rod 2 and the filter 4 by winding them together. Hereinafter, in the longitudinal direction (axial direction) of the tobacco rod 2, the end portion connected to the filter 4 is referred to as a "rear end", and the end portion on the opposite side is referred to as a "front end" (tip). Further, in the longitudinal direction (axial direction) of the filter 4, the end portion connected to the tobacco rod 2 is referred to as a "front end", and the end portion opposite to the front end is referred to as a "mouthpiece end". Further, a cross section of the cigarette 1 (tobacco rod 2, filter 4) along the longitudinal direction (axial direction) is defined as a "longitudinal cross section", and a cross section in a direction orthogonal to the cross section is defined as a "cross section". Further, "upstream" and "downstream" mean a relative positional relationship with respect to the flow of mainstream smoke. The reference numeral CL shown in FIG. 2 indicates the central axis of the cigarette 1 (tobacco rod 2, filter 4).

The filter 4 is formed between the upstream filter portion 41 connected to the rear end side of the tobacco rod 2, the mouthpiece filter portion 42 located on the mouthpiece end side, the upstream filter portion 41 and the mouthpiece filter portion 42. The configuration includes a hollow cavity 43 and a powder-containing material 44 contained in the cavity 43. The powder-containing material 44 is a mass of raw material powder containing at least one of a taste component and a fragrance component, and is crushed by a smoker to become a powder.

The upstream filter unit 41 and the mouthpiece filter part 42 are, for example, formed by forming filter fibers such as acetate into a columnar shape, and the upstream filter part 41 and the mouthpiece filter part 42 are integrally wound by the winding paper 45. There is. The winding paper 45 used for the filter 4 may be a breathable winding paper used in a general product, or may not be breathable. As the material of the roll paper 45, paper made of vegetable fibers is generally used, but a sheet using polymer-based (polypropylene, polyethylene, nylon, etc.) chemical fiber or a polymer-based sheet is used. Alternatively, a metal foil such as aluminum foil may be used. 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.

The mouthpiece filter portion 42 located on the mouthpiece end side is provided with a powder supply path 421 so as to penetrate the mouthpiece filter part 42 in the axial direction, and the cavity 43 and the mouthpiece end are provided by the powder supply path 421. Is communicated. Further, the filter 4 is integrally connected to the tobacco rod 2 by being wound up by the chip paper 3.

As the chip paper 3, paper made of vegetable fibers is generally used, but a sheet using polymer-based (polypropylene, polyethylene, nylon, etc.) chemical fiber or a polymer-based sheet is used. Alternatively, a metal foil such as aluminum foil may be used. The filter 4 may contain a fragrance such as menthol. The method of adding the fragrance is not particularly limited, but for example, the fragrance is adsorbed, a string-like substance is placed on the filter 4, the filling of the filter 4 is contained with the fragrance, or the fragrance such as a capsule is fixed. A method of arranging the converted material on the filter 4 is known.

A plurality of ventilation holes (hereinafter referred to as "cavity region ventilation holes") for diluting mainstream smoke by introducing ventilation air (outside air) into the filter 4 at a position corresponding to the cavity 43 in the chip paper 3. ) 31 is formed in a ring shape. In this case, with respect to the take-up paper 45, by using an appropriate take-up paper having a high air permeability, air taken in from the outside through the cavity region ventilation hole 31 of the chip paper 3 can be permeated into the cavity 43. This has the advantage that the strength of the take-up paper 45 is increased and it is difficult to break. However, as the winding paper 45, one that does not have air permeability or has low air permeability may be used. In that case, it is preferable to open the ventilation holes at the positions corresponding to the cavity region ventilation holes 31 in the winding paper 45. In this embodiment, it is preferable to use a pre-opened tip paper in which the cavity region vent holes 31 are formed in advance on the tip paper 3. As a result, there is no risk of damaging the powder-containing material 44 arranged in the cavity 43 as compared with the case where the cavity region ventilation hole 31 is formed by, for example, an on-machine laser. Further, by adjusting the opening area of the cavity region ventilation holes 31 (the total opening area when a plurality of cavity region ventilation holes 31 are arranged), the Vf value (the ratio of the air inflow amount 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 content 44 can be delivered to the maximum extent.

The cavity 43 is a space formed inside the filter 4, and more specifically, a columnar space surrounded by the rear end surface of the upstream filter portion 41, the front end surface of the mouthpiece filter portion 42, and the winding paper 45. Is. The cavity 43 may have a size that allows the powder content 44 to be placed. When a plurality of powder-containing materials 44 are installed, the cavity 43 needs to have a size capable of installing a plurality of powder-containing materials 44. Further, the shape of the cavity 43 is not particularly limited.

The powder-containing material 44 is a spherical shape in which the raw material powder is agglomerated, and becomes a powder by applying an external force. The external force is, for example, a force stronger than the force applied during manufacturing or transportation, or a force stronger than the suction force during smoking. The external force is exemplified by the force (crushing force) applied by the smoker with a finger. 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, and more preferably 20 N or more and 25 N or less. 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 rectangular parallelepiped, or a combination thereof. Further, the raw material powder constituting the powder content 44 has a particle size that allows at least a part of the raw material powder to pass through the powder supply path 421. For example, the particle size of the raw material powder may be set in the 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 the mixture, molding the mixture, and drying the mixture. Further, a binder may be added as a raw material of the powder-containing material 44. Further, a fragrance may be added to the nucleating agent together with water. As the nucleating agent, monosaccharides, disaccharides, polysaccharides or derivatives thereof can be used. For example, ketotriose (dihydroxyacetone), aldotriose (glyceraldehyde), ketotetroth (elittlerose), aldotetrose (erythrose, treose), pentose ketopentose (ribrose, xylrose) aldopentose (ribose, arabinose, xylose, lixose), Deoxy sugar (deoxyribose) Ketohexose (psicose, fructose, sorbose, tagatose), aldhexose (allose, altrose, glucose, mannose, growth, idose, galactose, talose), deoxysaccharide (fucose, fructose, ramnorse), sedhepturose , Sculose, lactose, maltose, trehalose, turanose, cellobiose, raffinose, meregitos, malttriose, acarbose, stachiose, 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. The nucleating agent is preferably substantially soluble in the oral cavity.

Further, as the binder, a water-soluble polymer such as dextrin, gelatin, gum arabic, polyvinyl alcohol, carboxymethyl cellulose and the like can be used. The amount of the binder added is preferably 10 wt% or less with respect to the nucleating agent.

The fragrance added to the nucleating agent is not particularly limited, and existing fragrances can be used, but powder fragrances and oil-based fragrances are particularly suitable. Examples of the main powdered fragrance include powdered chamomile, fenugreek, menthol, mint, cinnamon, herbs and the like. The main oily fragrances are lavender, anise, cardamon, celery, chow, cascarilla, nutmeg, sandalwood, bergamot, geranium, honey essence, rose oil, vanilla, lemon, orange, peppermint, coconut peel, caraway Examples include cognac, jasmine, chamomile, menthol, cashier, Iran Iran, sage, spearmint, fennel, piment, ginger, anise, corianda, coffee and the like. These powdered fragrances and oily fragrances may be used alone or in combination. When a powdered flavor is used, its particle size is preferably 500 μm or less. The fragrance is preferably liquid or substantially soluble in the oral cavity. The amount of the fragrance component added is preferably 10 wt% or less with respect to the nucleating agent.

Taste ingredients include citric acid, tartaric acid, sodium glutamate, neotheme, thaumatin, stevia, sorbitol, xylitol, erythritol, aspartame, rutin, hesperidin, oxalic acid, tannic acid, catechin, narringine, quinine, quinic acid, limonine. , Caffeine, capsaicin, vitamins, amino acids, polyphenols, arginic acid, flavonoids, lecithin, and the like. It is preferable that the taste component is substantially soluble in a liquid or in the oral cavity. The amount of the taste component added is preferably 10 wt% or less with respect to the nucleating agent. The powder-containing material 44 may be a plastic capsule containing the powder, a tableting molded product, or granules.

Here, FIG. 3 is a diagram showing a cross-sectional shape of the powder supply path 421 in the cross section of the mouthpiece filter portion 42 according to 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 one wind turbine shape as a whole. More specifically, in the cross section of the mouthpiece filter portion 42, the powder supply path 421 has a central connection portion 4210 located on the center side of the cross section of the mouthpiece filter portion 42 and a mouthpiece filter from the central connection portion 4210. It is formed from a plurality of holes 4211 extending toward the outer peripheral side of the cross section of the portion 42. Here, the opening area of each hole portion 4211 is relatively large compared to the opening area of the central connecting portion 4210.

The plurality of holes 4211 in the powder supply path 421 each have a vane shape, and extend radially from the central connecting portion 4210 in different directions. Further, the tip end of each hole portion 4211 (the end portion located on the side opposite to the central connection portion 4210) is arranged at a position separated from the winding paper 45 of the mouthpiece filter portion 42, and each hole portion 4211. The filter fiber forming the mouthpiece filter portion 42 is interposed between the tip of the paper and the winding paper 45. Further, in the example shown in FIG. 3, in the powder supply path 421, three holes 4211 extend radially from the central connecting portion 4210 toward the outer peripheral side. Further, the opening width of each hole portion 4211 in the powder supply path 421 gradually widens from the base end (the end connected to the central connection portion 4210) side toward the tip end side. Therefore, each hole 4211 in the powder supply path 421 has an opening width in the outer peripheral region 4211a located on the outer peripheral side of the cross section of the mouthpiece filter portion 42 as compared with the central region 4211b located on the central side in the cross section. Is relatively wide (large).

<Effect>
In the cigarette 1 according to the present embodiment, the powder supply path 421 of the mouthpiece filter portion 42 has a cross section through which the massive powder content 44 cannot pass. Therefore, the lumpy powder-containing material 44 arranged in the cavity 43 does not pass through the powder supply path 421, and the lumpy powder-containing material 44 is prevented from being discharged to the outside of the filter 4 through the powder supply path 421. it can. On the other hand, when the smoker crushes the lumpy powder-containing material 44 by applying an external force or the like and the powder-containing material 44 becomes a powder form, the powder of the powder-containing material 44 can pass through the powder supply path 421. Will be. As a result, the smoker can easily inhale the powder at any desired timing, and can obtain the taste of the taste component, the scent of the flavor component, or both.

Further, according to the powder supply path 421 of the present embodiment, the plurality of holes 4211 extend in different directions from the central connecting portion 4210 located on the central side of the cross section of the mouthpiece filter portion 42 toward the outer peripheral side. I have it. Here, increasing the cross-sectional area of the powder supply path 421 is advantageous from the viewpoint of increasing the delivery amount (supply amount) of the powder at the time of suction by the smoker, but simply increasing the cross-sectional area of the powder supply path 421. Therefore, unintended powder spills (powder spills) when the smoker is not inhaling are also likely to occur. The above-mentioned unintended powder spill is, for example, when a smoker holds the filter 4 in a posture in which the mouthpiece side of the filter 4 is directed downward while the smoker is not holding the filter 4, the powder is discharged to the outside through the powder supply path 421. For example, it may spill.

On the other hand, according to the powder supply path 421 of the present embodiment, a plurality of hole portions 4211 are formed in different directions from the central connecting portion 4210 located on the central side of the cross section of the mouthpiece filter portion 42 toward the outer peripheral side. By extending the openings, the opening regions can be dispersed and arranged on the outer peripheral side in the cross section of the mouthpiece filter portion 42 without being concentrated in one place. According to this, after the lumpy powder-containing material 44 is crushed into powder, the total opening area is sufficiently secured for the powder delivery amount (supply amount) at the time of suction, and at the time of non-suction. Unintended powder spillage can be suppressed. In particular, in the powder supply path 421 of the present embodiment, since the plurality of holes 4211 extend radially from the central connection portion 4210 toward the outer peripheral side, the opening region is formed in the cross section of the mouthpiece filter portion 42. The powder-containing material 44 can be more preferably dispersed and arranged, and unintended powder spillage after pulverization of the powder-containing material 44 can be suitably suppressed, and the amount of powder delivered during suction can be further secured.

Here, when the smoker holds the filter 4 of the cigarette 1 and sucks it, the powder of the powder-containing material 44 after crushing in the cavity 43 is accumulated on the outer peripheral side of the cavity 43 (winding paper 45). Therefore, it is advantageous to disperse a large amount of the opening region of the powder supply path 421 on the outer peripheral side of the mouthpiece filter portion 42 from the viewpoint of increasing the amount of powder delivered during suction. On the other hand, according to the powder supply path 421 of the present embodiment, the central connection portion 4210 is made relatively small and the opening area of each hole portion 4211 is formed larger than the central connection portion 4210. The amount of powder delivered during suction can be increased. Further, each hole portion 4211 in the powder supply path 421 has a relatively wider opening width in the outer peripheral side region 4211a than in the central side region 4211b, so that the outer peripheral side of the cross section of the mouthpiece filter portion 42 It becomes easy to secure the size of the opening area in. As a result, the amount of powder delivered during suction can be further increased.

Next, the number of holes 4211 in the powder supply path 421 will be described. Here, by setting the number of holes 4211 to 3 or more, it is possible to reduce variations in the amount of powder delivered during suction due to the posture in which the smoker holds the filter 4. That is, by extending three or more hole portions 4211 from the central connection portion 4210, the powder can be stably delivered at the time of suction regardless of the posture in which the filter 4 is gripped. Further, in the powder supply path 421 of the present embodiment, each hole portion 4211 is provided at a constant angle (120 °) in the circumferential direction of the mouthpiece filter portion 42. In other words, each hole portion 4211 extends radially from the central connecting portion 4210 at equal intervals in the circumferential direction of the mouthpiece filter portion 42. According to this, the powder can be stably delivered at the time of suction regardless of the posture in which the smoker holds the filter 4.

The upper limit of the number of holes 4211 in the powder supply path 421 is not particularly limited, but if the number of holes 4211 is 6 or more, most of the mouthpiece filter portion 42 becomes an opening region, and the powder is not sucked. There is a risk that the effect of suppressing spills will be reduced. Therefore, from the viewpoint of suppressing unintended powder spillage during non-suction while ensuring a sufficient amount of powder delivery during suction, the number of holes 4211 extending from the central connection portion 4210 is 3 or more and 5 or less. It is preferable to do so.

Further, the tip of each hole 4211 in the powder supply path 421 is separated from the winding paper 45 of the mouthpiece filter portion 42, and the filter fiber exists between the tip of each hole 4211 and the winding paper 45. In this way, by forming the hole portion 4211 in such a manner that the tip of the hole portion 4211 is not extended until it comes into contact with the winding paper 45, the edge portion (outermost outer peripheral portion) of the mouthpiece filter portion 42 does not become an opening, so that non-suction is not performed. Unintended powder spills at times can be further suppressed.

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 the powder supply passage 421 is a continuous opening. Therefore, at the time of manufacturing the mouthpiece filter part 42, the mouthpiece filter part 42 can be manufactured by using a single mandrel, and the cross section of the mouthpiece filter part 42 except for the powder supply path 421. Therefore, the filter fibers can be uniformly filled. That is, the manufacturing quality of the mouthpiece filter unit 42 can be stabilized.

The circumferential length of the filter 4 in the present embodiment is preferably in the range of 16 mm to 25 mm, and more preferably in the range of 22 to 25 mm. Further, the shorter the powder supply path 421 is, the easier it is to suck the powder, but if the length of the mouthpiece filter portion 42 is excessively short, the accuracy when the powder supply path 421 is integrally connected to the upstream filter portion 41 by the winding paper 45 is lowered. There is a risk. Therefore, the length of the mouthpiece filter portion 42 is preferably in the range of 5 mm to 15 mm, and more preferably in the range of 7 to 10 mm. The upstream filter portion 41 has a length obtained by subtracting the length of the cavity 43 and the length of the powder supply path 421 from the total length (27 to 30 mm), preferably in the range of 6 mm to 17 mm, and 11 to 17 mm. It is more preferable to set it in the range of.

Further, the diameter of the massive 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 larger the ratio of the volume of the massive powder-containing material 44 to the volume of the cavity 43, the better. When the lumpy powder-containing material 44 is crushed, the powder can be piled up higher, which facilitates delivery at the time of suction. Therefore, when the length of the cavity 43 is 6 mm, an embodiment in which the diameter of the massive powder-containing material 44 is 4 mm or more and less than 6 mm can be mentioned as an example.

Here, to exemplify some combinations of lengths of each part in the filter 4, when the total length of the filter 4 is 27 mm, the upstream filter part 41 may be 14 mm, the cavity 43 may be 6 mm, and the mouthpiece filter part 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 mouthpiece filter portion 42 may be 10 mm. Further, 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 mouthpiece filter portion 42 may be 7 mm. Further, 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 mouthpiece filter portion 42 may be 10 mm.

Further, it is preferable to select the winding paper 45 of the filter 4 so that the smoker is less likely to break or wrinkle when the lumpy powder-containing material 44 is crushed by applying an external force. For example, the basis weight of the web 45 is preferably 50 to 200 g / ^{m 2,} as determined in the range of 50~110g / ^{m 2,} more preferably. The air permeability of the take-up paper 45 is 1000 to 10000 [C.I. U] is preferable. Further, when the pre-opened chip paper in which the cavity region ventilation holes 31 are formed in advance in the chip paper 3 is used, the air permeability of the winding paper 45 is 200 to 3000 [C.I. U] is preferable.

<Example>
Next, the present invention will be described in more detail by way of examples, but the present invention is not limited to the description of the following examples as long as the gist of the present invention is not exceeded. The above-mentioned cigarette 1 was manufactured, and an evaluation test was conducted to measure the amount of powder delivered during suction and the amount of powder spilled during non-suction. 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 mouthpiece filter portion 42 was 6 mm. Further, assuming a state after the powder-containing material 44 was crushed, the raw material powder of the powder-containing material 44 was housed in the cavity 43. As the raw material powder of the powder-containing material 44, 50 mg of lactose (Pharmatose 100M manufactured by DFE Pharma) was used.

FIG. 4 shows the results of the evaluation test of the powder delivery amount and the powder spill amount according to the examples and the comparative examples. The subjects of the evaluation test were Examples 1 to 5 and Comparative Examples 1 and 2. FIG. 5 shows the shapes of the powder supply paths according to the examples and the comparative examples. Comparative Example 1 is a center hole filter in which the mouthpiece filter portion has a single powder supply path. In Comparative Example 2, three powder supply paths are formed through the mouthpiece filter portion in the axial direction.

The smoker shown in FIG. 6 was used to measure the amount of powder delivered. In this example, a suction experiment was conducted in a non-ignited state using a single-hanging smoker manufactured by Borgwaldt, and the amount of powder delivered was measured. The suction experiment was performed with the suction flow rate of 35 mL / 2 sec, the number of suctions being 5, and the number of measurements being 3. The powder delivery amount was calculated from the weight difference before and after suction by removing the powder collection pad (Cambridge pad) for each suction and measuring the weight with an electronic balance. To measure the amount of powder spill, 80% by weight of lactose is contained in water, and after forming a spherical shape having a weight of 50 mg and a diameter of 4.5 mm, it is formed at 25 ° C. for 5 minutes, 70 ° C. for 4 minutes, and 200 ° C. for 4 The powder-containing material produced by gradually drying for minutes was used. In the measurement test of the amount of powder spill, the filter side was turned downward in the form of a cigarette, the lumpy powder content 44 was crushed, and then vibrated 5 times, and the amount of powder spill was measured by an electronic balance. The number of measurements was three.

As shown in the test results of FIG. 4, there is no significant difference in the amount of powder spillage in any of the examples as compared with Comparative Example 1 having a single center hole as the powder supply path, while the powder delivery amount is comparative. It was found that more examples could be secured than in example 1. In addition, there is no significant difference in the amount of powder delivered and the amount of powder spilled in each of the examples with respect to Comparative Example 2 having three independent powder supply channels. However, in Comparative Example 2, since the three powder supply paths are independent, it is necessary to manufacture the mouthpiece filter portion using three mandrels, and the filter fibers are uniformly filled between each mandrel. Can be said to be difficult. Therefore, each example is superior to Comparative Example 2 in that it can provide a mouthpiece filter portion with stable quality.

<Embodiment 2>
Next, the cigarette 1A according to the second embodiment will be described. Here, the differences from the cigarette 1 of the first embodiment shown in FIGS. 1 to 3 will be mainly described. FIG. 7 is a schematic configuration diagram of the cigarette 1A according to the second embodiment. The filter 4 of the cigarette 1A is provided with a vent hole (hereinafter, referred to as “upstream filter portion region vent hole”) 31A penetrating at a position corresponding to the upstream filter portion 41 of the chip paper 3 and the winding paper 45.

<Embodiment 3>
Next, the cigarette 1B according to the third embodiment will be described. Here, the differences 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. FIG. 8 is a schematic configuration diagram of the cigarette 1B according to the third embodiment. The filter 4 of the cigarette 1B is provided with the cavity region vent hole 31 shown in FIG. 2 and the upstream filter portion region vent hole 31A shown in FIG. 7 on the chip paper 3.

Since the filter 4 of the cigarette 1B in the present embodiment is provided with ventilation holes for taking in the air for dilution on both the cavity 43 and the upstream filter portion 41, the balance of the air inflow amount from these is adjusted. The delivery amount of the powder (for example, fragrance powder) formed by crushing the powder-containing material 44 can be changed without changing the Vf value of the filter 4 as a whole. According to this, for example, it is possible to optimally design the taste (taste) intensity of the perfume powder while keeping the tar value of the cigarette 1B constant.

Although the preferred embodiment of the present invention has been described above, the filter for smoking articles according to the present invention can be implemented by combining each embodiment as much as possible.

1 ... Cigarette 2 ... Tobacco rod 3 ... Chip paper 4 ... Filter 41 ... Upstream filter part 42 ... Mouthpiece filter part 43 ... Cavity 44 ... Powder content 45 ... Cigarette 421 ... Powder supply path 4210 ... Central connection 4211 ... Hole

Claims (6)

Tobacco rods, including tobacco chopped,
With a filter, which is connected to the end of the tobacco rod via tip paper,
The filter is
A powder-containing product that is a mass of raw material powder containing at least one of a taste component and a fragrance component, and becomes a powder by applying an external force.
The cavity in which the powder content is placed and
A mouthpiece filter that is connected to the downstream side of the cavity and has a powder supply path for communicating the cavity and the mouthpiece end and supplying the powder from the cavity to the mouthpiece end along the axial direction. Department and
Have,
In the cross section of the mouthpiece filter portion, the powder supply path has a central connection portion located on the center side of the cross section of the mouthpiece filter portion and a direction different from each other from the center connection portion toward the outer peripheral side of the cross section. Includes multiple extending holes,
Smoking goods. The opening width of the hole portion in the powder supply path is relatively larger in the outer peripheral side region located on the outer peripheral side of the cross section of the mouthpiece filter portion than in the central side region located on the central side of the cross section. ,
The smoking article according to claim 1. The smoking article according to claim 1 or 2, wherein the powder supply path includes 3 or more and 5 or less of the holes. The powder supply path has a plurality of holes extending radially from the central connection.
The smoking article according to any one of claims 1 to 3. In the cross section of the mouthpiece filter portion, the filter fibers forming the mouthpiece filter portion are interposed between the tip of the hole portion of the powder supply path and the winding paper of the mouthpiece filter portion.
The smoking article according to any one of claims 1 to 4. A powder-containing product that is a mass of raw material powder containing at least one of a taste component and a fragrance component, and becomes a powder by applying an external force.
The cavity in which the powder content is placed and
A mouthpiece filter that is connected to the downstream side of the cavity and has a powder supply path for communicating the cavity and the mouthpiece end and supplying the powder from the cavity to the mouthpiece end along the axial direction. Department and
With
In the cross section of the mouthpiece filter portion, the powder supply path has a central connection portion located on the center side of the cross section of the mouthpiece filter portion and a direction different from each other from the center connection portion toward the outer peripheral side of the cross section. Includes multiple extending holes,
Filter for smoking items.

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