JP2019537441A - Smoking article with liquid-filled capsule - Google Patents

Abstract

A smoking article comprising a rod element comprising a smokable material and a filter element having a first end for connecting to an end of the rod element and an opposite second end for insertion into a user's mouth. It has been disclosed. A liquid-filled capsule is disposed between the first and second ends of the filter element, and the liquid-filled capsule is configured to break and release liquid when an external force is applied. The tipping package connects the filter element and the rod element. The tipping package has a wet tensile strength of at least about 0.15 kN / m. Smoking articles are less likely to break, even after the liquid has been released. [Selection diagram] Fig. 1

Description

  The present invention relates to a smoking article with a filter element having a liquid-filled capsule. By breaking the capsule and releasing the liquid within the smoking article, the characteristics of the smoke generated by the smoking article can be altered. The smoking article is configured to be able to withstand rupture even after liquid is released from the capsule and the article gets wet.

  Smoking articles such as cigarettes and cigarillos are consumer products intended for the general public and generally have a generally cylindrical rod-shaped configuration and are covered by a wrapper forming a so-called "cigarette rod" (e.g., It comprises a charge, roll or column of a smokable material, such as minced tobacco (in cut filler form). Typically, a cigarette or cigarillo also has a tubular filter element aligned in an end-to-end relationship with the tobacco rod. The filter element may comprise, for example, a plug of cellulose acetate tow, which is surrounded by a wrapping material known as "plug wrap". Generally, the filter element is attached to one end of a tobacco rod using an outer wrapping material known as a "tipping wrapper". The filter element packaged by the tipping package is known as the "mouthpiece element".

  In recent years, there has been an increasing demand from consumers for smoking articles having improved perceptual properties, particularly cigarettes having a filter element that can function as an element to add flavor to mainstream cigarette smoke. . Specifically, these smoking articles comprise a flavor improving substance in a frangible pellet or capsule. During cigarette manufacture, the filter material is formed into a continuous filter rod in which such pellets or capsules are arranged, for example, along their longitudinal axis. The continuous filter rod is then split or cut at predetermined intervals, and a plurality of filter elements are formed, each having at least one capsule. The capsules are then broken manually by the consumer, releasing one or more properties into the filter material that result in one or more properties such as flavor, taste, or TNCO levels (tar, nicotine, CO) of the mainstream smoke during smoking. It works to change.

  For this purpose, a frangible capsule having a shell made of, for example, a gel containing the substance to be released is used. Recently, in these easily breakable capsules, the release of liquids, especially the release of water, has started to attract attention. However, this can be a problem. That is, the released liquid tends to wet the filter element, such as the filter package or tipping package that couples the filter element to the tobacco rod, and may weaken the filter element. As a result, for example, when a force is applied, such as when the user taps on the mouthpiece element to remove ash from the lit end of the smoking article, especially at the connection between the filter and the filter where the tipping package overlaps the tobacco rod. The mouthpiece element may break from the tobacco rod.

  Accordingly, it is an object of the present invention to provide a smoking article having a liquid-filled capsule that can withstand damage even when an external force is applied after the liquid is released and the smoking article becomes wet. In particular, it is desirable to provide a smoking article that reduces the risk of the mouthpiece element falling off when the consumer taps on the mouthpiece element to remove ash from the lit end of the smoking article.

  According to one aspect of the invention, a rod element comprising a smokable material (eg, a tobacco rod), a first end for connecting to an end of said rod element and an opposite side for insertion into a user's mouth. A filter element having a second end, and disposed between the first end and the second end of the filter element, the filter element configured to break and release liquid therein when an external force is applied. A liquid-filled capsule, and a tipping package connecting the filter element and the rod element, wherein the tipping package has a wet tensile strength of at least about 0.15 kN / m. Provide the goods.

  The wet tensile strength of the tipping package ensures that the smoking article can withstand the forces experienced during normal use without damaging the components of the smoking article, even after the liquid has been released from the capsule. Is selected. In particular, using a tipping package having a wet tensile strength of 0.15 kN / m or more, the smoking article is defined to be robust to the forces associated with the use of the smoking article. For example, the article may be strong enough to withstand the repetitive forces associated with tapping the mouthpiece to remove ash during use. The wet tensile strength may be at least 0.20 kN / m, such as at least 0.25 kN / m, such as at least 0.30 kN / m, or at least 0.35 kN / m. The wet tensile strength may be up to 0.55 kN / m, for example up to 0.50 kN / m, for example up to 0.45 kN / m, or up to 0.40 kN / m.

  The dry tensile strength of the tipping package may be at least 1 kN / m, such as at least 1.25 kN / m, at least 1.50 kN / m, such as at least 1.75 kN / m, or at least 2 kN / m. By using a tipping package having a dry tensile strength (i.e., before wetting by the released liquid) of 1 kN / m or more, the tipping package can withstand the tensile forces experienced during manufacturing, especially tipping. The package is provided on a reel and is pulled from the reel to connect the filter element to the rod element of the smokable material and the tipping package can withstand the tensile forces experienced when wound around the filter and tobacco at high speed. it can.

  The dry tensile strength of the tipping package may be less than 5 kN / m, for example less than 4 kN / m, for example less than 3 kN / m.

  The ratio of dry tensile strength to wet tensile strength of the tipping package may be less than or equal to 15, for example less than 12, for example less than 9 or less than 6. The ratio of the dry tensile strength to the wet tensile strength of the tipping package may be between 4 and 15, for example between 5 and 9, for example between 5 and 7, Is also good.

  The tensile strength of the wet and dry tipping packages is measured along the principal stress direction of the tipping package, which principal stress direction corresponds to the set of mutually perpendicular axes where the normal stress tensor is maximized. . The wet tensile strength is measured according to ISO3781: 1983, and the dry tensile strength is measured according to ISO1924-2: 2008. The principal stress directions of a roll of tipping material such as a paper roll of a tipping package (ie, a roll of tipping paper) are referred to as the machine direction (MD), the transverse direction (CD), and the Z direction (ZD). It is shown in FIG. Both the machine direction and the transverse direction are included in the plane of the tipping wound material, the machine direction is the direction in which the material is pulled from the roll and the transverse direction is parallel to the longitudinal axis of the roll and the winding of the roll Orientation. The Z direction is perpendicular to the plane of the tipping material and thus perpendicular to the other two main directions. As the roll of tipping material is wound, the Z direction is radially oriented toward the longitudinal axis of the roll. Preferably, the wet and dry tensile strength is measured along the machine direction.

  Preferably, the tipping package is wound around the filter element with the main stress direction substantially parallel to the longitudinal axis of the filter element. Preferably, the primary stress direction is transverse, as the machine direction generally has a higher tensile strength than the transverse direction, which allows it to be easily manufactured at high speeds as described above.

  The liquid-filled capsule may be an isotropic capsule configured to break when a predetermined compressive force is applied. Liquid-filled capsules may break and release liquid evenly or in one or more directions. The liquid-filled capsule may be a spherical capsule.

  The liquid-filled capsule may be a directional capsule, the directional capsule being a capsule containing a liquid volume, adapted to release liquid in a specific desired direction or a specific desired area. . The directional capsule may be configured to break at a predetermined rupture region when an external force is applied, and substantially release liquid from the rupture region. When using directional capsules to direct the released liquid to a specific area of the article, it is particularly important to use a tipping package having a wet tensile strength of 0.15 kN / m or more. By providing a relatively high tensile strength in the tipping package in this range, the smoking article may have improved resistance to breakage.

  The rupture region of the capsule may be arranged to release liquid in an axial direction, such as the longitudinal axis of the filter element.

  Some easily breakable capsules are isotropically resistant to breaking, which releases the specific rupture location of the capsule, that is, the material contained therein It may be difficult to identify the region of the filter element that will be affected. With a directional capsule, liquid is released into a predetermined portion of the article, which can be strengthened within the identified tipping package and damage can be reduced. Certain directional capsules can eject a liquid in a gushing manner, the force of which may be determined by the crushing force applied by the consumer. This allows the liquid to exit the directional capsule with some force and spread the wetting of the smoking article to the end of the tobacco more than non-directional capsules can normally reach. For this reason, the importance of providing a tipping package having a relatively high wet tensile strength of more than 0.15 kN / m becomes greater.

  The use of directional capsules may also have an effect on the location of liquid release in a smoking article, which may affect liquid changes in smoke characteristics such as flavor. Thus, controlling where the liquid is released may also be important in order to better control the effect of the liquid on the inhaled smoke.

  The rupture region may be oriented toward a first end of the filter element. Therefore, the liquid may adhere to the vicinity of the connection end of the rod element. However, as noted above, this range may be particularly vulnerable to absorbing the released liquid, which may increase the likelihood of the rod falling off. By using a tipping package having a wet tensile strength exceeding 0.15 kN / m in this area, it is possible to reliably prevent the rod from falling off during normal use.

  The rupture zone may be oriented toward a second end of the filter element. In this way, the liquid can be directed away from the area of the article that is most likely to become fragile after wetting.

  The filter element may further comprise a fibrous filtration material between the capsule and the first end of the filter element. By providing a fibrous filter material upstream of the directional capsule, the effect of the emitted liquid on the mainstream smoke characteristics can be kept longer. The fibrous filter material may be located immediately adjacent the directional capsule, for example, immediately adjacent the rupture region of the directional capsule. Placing the fibrous filter material in close proximity to the directional capsule allows the liquid to travel towards the area where only the tipping package, the weakest area in the smoking article, covers the rod element of the smokable material (the connection area). That can be controlled. The fibrous filtration material may extend for at least 7 mm, for example 9 mm, between the directional capsule and the first end of the filter element. By providing this amount of fibrous filtration material immediately upstream of the directional capsule, liquid leakage is reduced and the effect of the emitted liquid on mainstream smoke characteristics can be maintained longer.

  In some embodiments, the capsule may contain a liquid volume of at least 0.05 ml. In another aspect, the capsule may contain a volume of at least 0.07 ml or at least 0.08 ml. This volume of liquid may be significantly greater than known equipment. The use of a large volume capsule increases the problems that the smoking article may suffer from wetting. Thus, this provides a further advantage to using a relatively high wet tensile strength tipping package of over 0.15 kN / m.

  In preferred embodiments, the liquid volume of the directional capsule may be 0.15 ml or less, for example 0.12 ml or less, or 0.10 ml or less. By providing such a liquid volume, leakage of liquid is further reduced.

  The tipping package may include a fibrous material and a wet-strengthening additive that enhances the bond between the fibers of the fibrous material. Additives may be added during manufacturing, such as during curing, so as to be embedded in the fibers. Strengthening the bonds between the fibers may be facilitated by forming crosslinks in the molecules of the additive. The wet tensile strength of the tipping package may be enhanced by adding a wet-strengthening additive to strengthen the bonds between the fibers. In some embodiments, the fibrous material can be paper and the wet-strength additive can be a polymer. The wet strengthening additive may be selected from natural resins, synthetic resins, or combinations thereof.

  The filter element may further comprise a filter package extending at least partially between the first end and the second end of the filter element. The provision of such a filter wrap may assist in retaining the liquid within the filter element, thereby further reducing leakage and maintaining a longer effect on mainstream smoke characteristics. By providing such a filter package, the most vulnerable area in the smoking article after the liquid has been released will be more concentrated on the connection between the filter and the rod element provided by the tipping package. The smoking article will be further enhanced against the fragile effects of the released liquid.

  The filter element may comprise at least two filter segments combined by a filter wrap. In this way, the capsule is provided in one such filter segment and the filtering material is provided in one or more further filter segments, which may simplify the manufacture of smoking articles. it can.

Embodiments of the present invention will be described by way of example only with reference to the accompanying drawings. In these drawings,
FIG. 1 shows the principal stress direction in a roll of tipping material. FIG. 2 is a cross-sectional side view of a filter element used in a smoking article in an embodiment of the present invention. FIG. 3 is a side view of the smoking article according to the embodiment of the present invention. FIG. 4 is an isometric view of the smoking article according to the embodiment, showing the filter and the tipping package in an expanded state.

  FIG. 3 is a schematic side view of the smoking article 10 according to the embodiment of the present invention. The smoking article 10 comprises a rod element 11 comprising a smokable material and connecting to the filter element 1. The filter element has a first end 2 connected to the end of the rod element 11 and a second end 3 through which smoke is drawn into the mouth of the user. The liquid-filled capsule 7 is provided between the first end 2 and the second end 3 of the filter element 1. The liquid-filled capsule 7 is configured to break and release the liquid L when a force F is applied. The rod 11 and the filter element 1 are connected in a linearly aligned relationship with a tipping package 12 extending over at least a plurality of connection ends. The wet tensile strength of the tipping package 12 is at least 0.15 kN / m, preferably at least 0.20 kN / m.

  Tipping package 12 may be made of a fibrous material such as paper with a wet-strengthening additive. Wetting-enhancing additives include natural polymers such as starch or carboxymethylcellulose (CMC), polyacrylamide (PAM), glyoxalated polyacrylamide (GPAM), or polyamide-epichlorohydrin. It may contain at least one of synthetic resins such as (PAE). These resins generally function during the paper curing process as the functional groups of the polymer react with the cellulose fibers to form covalent bonds. The polymer molecules crosslink and form a network in the cellulosic web that provides strength when the paper gets wet. Wet-strengthening additives also strengthen existing fiber-to-fiber bonds and further enhance paper strength. The wet reinforcing additive is applied in an amount sufficient to saturate the cellulosic fibers.

  The rod element 11 is a tobacco rod, and the smokable material is made of tobacco. For example, the smokable material may be cut filler tobacco. The cut filler tobacco may be composed of tobacco species such as Virginia, Burley, Oriental, and Semi Oriental. The tobacco cut filler may be composed of, for example, a blend of two or more different types of tobacco among the above-mentioned types of tobacco. Alternatively, the tobacco cut filler may be composed of one of the above-mentioned types of tobacco. The tobacco cut filler may be composed of, for example, air-dried, sun-dried or flue-dried tobacco. Alternatively or additionally, the tobacco cut filler may be treated, for example, to reduce tobacco-specific nitrosamines (TSNA). In addition to tobacco leaves, tobacco cut fillers may include other components commonly found in tobacco cut fillers, such as expanded tobacco, homogenized tobacco (eg, regenerated tobacco, cast tobacco or extruded tobacco). extruded tobacco), tobacco stems (eg, swollen or modified stems), miniaturized tobacco (tobacco fines), and combinations thereof, and the like. Flavors and casings comprising one or more wetting agents, flavoring agents, sugar, or combinations thereof, may be applied to tobacco cut fillers in a known manner.

  The rod element 11 has a substantially cylindrical shape and comprises a smokable material surrounded by an outer wrap of smokeable cigarette paper. The filter element 1 also has a cylindrical shape whose cross section substantially corresponds to the cross section of the rod element 11. The filter element 1 includes filter plugs 4, 6 with a filtering material that filters the mainstream smoke as it passes between the first end 2 and the second end 3. Examples of suitable filtration materials include cellulose acetate, paper, and combinations thereof. The filter element may have at least one filter segment of a fibrous filter material, and optionally, a fibrous filter material, typically a cellulosic filter material such as cellulose acetate tow. May have a plurality of segments.

  The filter element 1 itself generally has a length in the range from about 5 mm to 40 mm, preferably in the range from about 15 mm to about 30 mm.

  Liquid-filled capsule 7 is arranged in filter element 1 between first end 2 and second end 3. Capsule 7 comprises an outer shell containing liquid L, which may have one or more flavors. The shell of the capsule 7 is configured to break by the force applied by the user and release the liquid L. The shell may be formed of an elastically deformable material such as a polymer material. The liquid in the capsule may be made up of purified water or a water-based liquid containing dissolved or suspended substances such as flavoring substances.

  For example, as shown in FIG. 3, the force applied by the user's finger to the outside of the filter in the radial direction inside the capsule 7 breaks the capsule 7 and releases a sufficient amount of the liquid L contained in the capsule. It is configured to be sufficient. The liquid-filled capsule 7 shown in FIG. 3 is a directional capsule 7 configured to discharge liquid in a predetermined direction, and will be described later in detail with reference to FIG.

  In the present embodiment, the capsule 7 is partially trapezoidal. In other embodiments, the capsule 7 may have an elongated shape. Alternatively, the capsule 7 may be substantially spherical or oval. Capsule 7 may be a seamless shell. Alternatively, capsule 7 may be an open-ended shell that is closed and sealed with a cap. The shell may have side walls or side walls that extend from the end wall to the open end, thereby covering or defining the cavity of the shell. The transverse wall may terminate at a perimeter at the open end to facilitate application of the cap. The side walls may be generally cylindrical in shape and may be faceted. The side wall or the side wall may be tapered from the open end to the end wall, or may be narrowed. The cap is generally formed from a portion or surface of a sheet material, such as a layered plastic sheet material, and cut.

  The liquid capsule 7 may contain a liquid volume of at least 0.05 ml. By providing this liquid volume, the amount of liquid released in a single compression will have a significant effect on the characteristics of mainstream smoke. This is a relatively large liquid volume compared to the liquid capsules used hitherto. Thus, the breaking of the liquid capsule 7 causes a large wetting in the smoking article 1, which wetting reaches in the filter element 1 and also to a part of the rod element 11. The tipping package 12 will also get wet. In the embodiment described here, the tipping package 12 has a wet tensile strength of at least 0.15 kN / m. It has been found that this property of the tipping package 12 provides sufficient robustness during normal use and prevents the rod element 11 from falling off the filter element 1 even after the liquid L has been released.

  The first connection end 2 of the filter element abuts the end of the rod element 11, which connection is ensured by wrapping around a tipping package 12 covering at least the joint between the rod element 11 and the filter element 1. become. The tipping package 12 extends over the connection in opposite axial directions and is attached to the outer surfaces of the rod element 11 and the filter element 1 by, for example, an adhesive. The longer the length of the tipping package 12 that extends and is attached to each side of the connection, the greater the strength of the connection between the filter 1 and the rod 11 will be. If it extends too long along the tobacco rod to burn it, it will also affect the properties of the smoke being drawn.

  Generally, the tipping package 12 is substantially rectangular and can be wrapped cylindrically around at least a portion of the smokable material rod element 11 and at least a portion of the filter element 1 as seen in FIG. Since the tipping package 12 is wound, at least a portion of the filter element 1 is attached such that the tipping package 12 physically and mechanically attaches or connects the filter element 1 to the rod element 11 of the smokable material. The tipping package will surround or envelop. In this way, the tipping package 12 will typically surround or enclose the filter element 1 and the adjacent end of the rod element 11 of smokable material. Thus, the portion of the rod element 11 of the smokable material that is surrounded or wrapped by the tipping package 12 typically has a length in the range 1 mm to 16 mm, for example a length in the range 2 mm to 12 mm. become. As used herein, the term “length” refers to the axial or length dimension of smoking article 10.

  The tipping package 12 may include a bonding area to which an adhesive is applied. That is, the tipping package 12 typically has an area where the tipping package 12 overlaps itself when the tipping package 12 is wrapped around at least a portion of the filter element 1 and the rod element 11 of the smokable material. Will be combined. The coupling region preferably has a longitudinal shape, for example, extending along the length of the tipping package 12 in the length direction of the smoking article 10.

  As described above, the wet tensile strength of the tipping package 12 is at least 0.15 kN / m. In some embodiments, the wet tensile strength of the tipping package 12 is at least 0.25 kN / m, for example, about 0.35 kN / m. The wet tensile strength of the tipping package 12 is less than about 0.55 kN / m.

  The dry tensile strength of the tipping package 12 is at least about 1 kN / m, such as at least about 1.25 kN / m, such as at least about 1.5 kN / m. The dry tensile strength of the tipping package 12 is less than about 5 kN / m, for example, 3 kN / m or less.

  The ratio of dry tensile strength to wet tensile strength of the tipping package 12 is 15 or less, for example, 12 or less, 9 or less, or most preferably 6 or less. Tests show that a ratio of dry tensile strength to wet tensile strength in the range of 5 to 7 is feasible, maintaining the strength of the tipping package from dry to wet. It has a beneficial effect when doing so.

  During use, a force is applied by the user in the direction indicated by arrow F to the outer surface of the filter element 1 to break the capsule and release the liquid L. This force is typically provided by the opposing pressure of the user's finger in a direction perpendicular to the direction of extension of smoking article 10, as indicated by arrow F. Due to this pressure, the filter element 1 is deformed inward, and a corresponding force is generated in the capsule 7 such that the shell is deformed and ruptured by the increased internal pressure, and the liquid L is ejected.

  The liquid L is released from the capsule 7 and disperses in the filter materials 6,4. A part of the discharged liquid L may also move toward the tipping package 12, arrive at the tipping package 12, and be absorbed by the tipping package 12. In an embodiment in which the filter element 1 is wound by the filter element 8 (FIG. 4), typically when the filter element 1 comprises two or more segments, the tipping element 12 is placed on the filter element 8. Is attached to the filter element 1 by applying an adhesive to the filter element 1. However, the application of the adhesive is generally only along a line parallel to the longitudinal axis of the filter element 1, there is a gap between the filter package 8 and the tipping package 12, and once the liquid has When the liquid leaks out of the filter package 8 and enters this area, the released liquid L can travel at high speed through this gap by capillary action. As the liquid is discharged towards the first filter end 2 or the end of the tobacco, the liquid travels towards the tobacco rod 11 and the tobacco rod 11, the weakest area of the smoking article 10, connects to the filter element 1. This area of the tipping package 12 may be reached where liquid may be absorbed.

  The smoking article 10 is ignited at the end of the tobacco rod 11 opposite the filter 1, and the resulting smoke travels through the tobacco rod 11 and the filter element 1 and is sucked by the user at the second end of the filter 3. Before passing through a dispersed liquid L which affects the characteristics of the mainstream smoke. In normal use, the user typically taps the mouthpiece 1 to remove the consumed ashes. The wet tensile strength of the tipping package 12 may be such that, even in the region where the tobacco rod 11 connects to the filter element 1, even if the liquid reaches the tipping package 12 and is absorbed, the rod 11 may come off the filter 1. It is selected to provide sufficient strength so that the smoking article can withstand the damage.

  The liquid-filled capsule 7 is a directional capsule configured to release the liquid L in a predetermined direction by providing a known rupture area P. For example, the shell of the capsule 7 is configured to have a weak point or region P that breaks preferentially by the application of the force F, and is configured such that the contained liquid L is ejected from this known point or region. Have been. The vulnerable area may comprise one or more vulnerable lines. Alternatively, the weakened area may include one or more stress concentration elements. A fragile region may be formed by combining a fragile line and a stress concentration element.

  The rupture area of the directional capsule 7 may be arranged such that the liquid L is released in an axial direction, such as the longitudinal axis of the filter element 1, and enters an adjacent area of the filter material. The shell and rupture region P of the directional capsule 7 may be configured such that the force applied by the user causes the liquid L to be ejected or ejected in a predetermined direction. The ejection speed of the liquid L may be increased so that the liquid L reaches the tipping package 12. This ejection may increase the amount of the liquid L reaching the tipping package 12, particularly a local area of the tipping package 12, such as a connection area with the tobacco filter. These factors increase the importance of having a tipping package 12 having a high wet tensile strength of over 0.15 kN / m.

  In this embodiment, the rupture area of the directional capsule 7 faces the first connection end 2 of the filter element 1. In this way, the released liquid L disperses adjacent the first end 2 of the filter element 1. This area of the smoking article 10 near the connection point between the rod 11 and the filter 1 is known as the point of weakness (especially after wetting), but the risk of breaking due to the strengthening provided by the defined tipping package 12 Is reduced. Thus, the desired effect on mainstream smoke characteristics can be obtained without increasing the risk of damage to smoking article 10.

  The distance D between the rupture zone P of the capsule 7 and the first end of the filter element 1 may also be adjusted so that the ejected liquid L is located at an optimal location. Tests have shown that a distance of at least 7 mm, preferably at least 9 mm, allows the liquid L to be properly dispersed without the released liquid reaching too far into the tobacco rod 11.

  The filter element 1 may further comprise a plurality of filter segments arranged in series along the longitudinal axis of the filter element 1. In the example of FIGS. 2 and 3, the filter element 1 comprises three filter segments 4, 5, 6. The directional capsule 7 is provided in the center filter segment 5 with the filter segments including the filter plugs arranged on both the upstream 6 side and the downstream 4 side. These filter segments are connected by a filter wrap 8 (shown in FIG. 4) wrapped around the filter segments 4, 5, 6 to secure them together.

  In another embodiment, one or more filter segments may be individually wound, and some or all of the filter segments may be joined by a combiner filter package 8.

  In some embodiments, at least one filter segment may include a particulate material such as a sorbent or a flavor. The particulate material may be embedded in the fibrous filtration material or may be contained in a cavity. The particulate material may be located between the rupture zone P of the directional capsule 7 and the first end 2 of the filter element 1 or alternatively, the second end 3 of the filter element 3 and the directional capsule 7 And may be arranged between them. The choice depends on the desired effect on the mainstream smoke characteristics via the filter element 1.

  In another embodiment, the filter element 1 comprises one filter segment in which the liquid capsule 7 is arranged.

  2 and 3, the directional capsule 7 is arranged such that the rupture area P is closer to the first end 2 of the filter element 1, but in another embodiment, the directional capsule 7 May be arranged in the filter element 1 such that the rupture zone P is closer to the second end 3 of the filter element than to the first end 2 of the filter element 1.

  In the embodiments described above, one capsule 7 was provided in the filter element 1, but in another embodiment the filter element 1 comprises two or more capsules 7, for example one or more directional capsules 7 and one or more non-directional capsules. If one or more directional capsules 7 are provided, all directional capsules 7 may be oriented in the same direction, or one or more directional capsules may be oriented in a first direction ( One or more capsules 7 are moved in the second direction, with each rupture point P being directed towards the end 2 connecting to the rod element 11 of the smokable material, ie the first end 2 of the filter element 1). Oriented (with each rupture zone P facing the end for insertion into the mouth of the user, ie the second end 3 of the filter element 1).

  In the embodiment described above, the directional capsule 7 has been described. In other embodiments, non-directional capsules may be used. The capsule may be an isotropic capsule, for example a conventional spherical capsule.

  FIG. 4 shows a preferred method of connecting the tobacco rod 11 with the filter element 1 by means of a tipping package 12. The tipping package 12 is pulled in a machine direction (MD) from a reel of tipping material (FIG. 1) such that the transverse direction (CD) of the tipping material is substantially parallel to the longitudinal axis of the filter element 1. , Wound around the filter element 1. As a result, the tipping package 12 is wound around the filter element 1 and the tobacco rod 11 such that the transverse direction (CD) is substantially parallel to the longitudinal axis of the filter element 1.

  Alternatively, the tipping package 12 may be wound on the filter element 1 such that the machine direction (MD) of the tipping material is substantially parallel to the longitudinal axis of the filter element 1. As a result, the tipping package 12 is wound around the filter element 1 and the tobacco rod 11 such that the machine direction (MD) is substantially parallel to the longitudinal axis of the filter element 1.

Claims (15)

A rod element comprising a smokable material;
A filter element having a first end for connection to an end of the rod element and an opposite second end for insertion into a user's mouth;
A liquid-filled capsule disposed between the first end and the second end of the filter element, the liquid-filled capsule being configured to break down upon application of an external force and release liquid therein;
A tipping package connecting the filter element and the rod element, comprising:
A smoking article wherein the tipping package has a wet tensile strength of at least 0.15 kN / m.   The smoking article according to claim 1, wherein the tipping package has a dry tensile strength of at least 1 kN / m.   The smoking article according to any of the preceding claims, wherein the tipping package has a dry tensile strength of 5 kN / m or less.   The smoking article according to any of the preceding claims, wherein the tipping package has a wet tensile strength of 0.55 kN / m or less.   The smoking article according to any one of claims 2 to 4, wherein a ratio of dry tensile strength to wet tensile strength is 15 or less.   A smoking article according to any of the preceding claims, wherein the tipping package is wrapped around the filter element such that the main stress direction of the tipping package is substantially parallel to the longitudinal axis of the filter element.   The smoking article according to claim 6, wherein the main stress direction is a transverse direction.   The smoking article according to any of the preceding claims, wherein the liquid-filled capsule is a directional capsule. The directional capsule includes a predetermined rupture region configured to rupture when an external force is applied,
The smoking article according to claim 8, wherein the rupture region is directed toward the first end of the filter element. The directional capsule includes a predetermined rupture region configured to rupture when an external force is applied,
9. The smoking article according to claim 8, wherein the rupture zone is directed toward the second end of the filter element.   A smoking article according to any preceding claim, wherein the filter element further comprises a fibrous filtering material between the capsule and a first end of the filter element.   13. The smoking article according to claim 12, wherein the fibrous filtration material extends for at least 7 mm between the capsule and the first end of the filter element.   A smoking article according to any of the preceding claims, wherein the capsule comprises a liquid volume of at least 0.05 ml.   The smoking article according to any of the preceding claims, wherein the tipping package comprises a fibrous material and a wet-strengthening additive that strengthens the bonds between the fibers of the fibrous material. The fibrous material is paper;
15. The smoking article according to claim 14, wherein the wet-strengthening additive is selected from a natural resin, a synthetic resin, or a combination thereof.

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