JP2018527027A - Smoking article - Google Patents

Abstract

The present invention is a smoking article comprising a tobacco rod, a filter including at least one filter material plug packaged by one or more filter wrapping materials, and a chipping material connecting the tobacco rod and the filter. And the filter wrapping material relates to a smoking article having a basis weight greater than 23 g / m 2 and less than 50 g / m 2. [Selection] Figure 1

Description

  The present invention relates to a filter for a smoking article, a smoking article comprising the filter, and the use of the filter in a smoking article.

  Smoking articles such as cigarettes typically include a tobacco rod or other aerosol-forming material wrapped in a flammable packaging (usually cigarette paper) and a filter, the tobacco rod and filter being end to end connected. It is straight. The filter may include at least one cellulose acetate tow plug that is connected to the tobacco rod or other aerosol forming material via a tipping paper across the filter and the proximal end of the tobacco rod, the tobacco rod A filter is joined to the proximal end of the filter. A perforation may be further provided in the filter through the chipping paper so that the smoke sucked by the consumer can be passed through the filter when smoking.

  Consumers nowadays expect the highest quality that enables the best possible consumer experience in any consumer product and pay more attention to the perceived quality of the product presentation and look and feel. And sometimes these qualities are as important as other properties, such as product taste or functional benefits. This applies to smoking articles as well as to other consumer products, and the specific area that consumers focus on when determining the quality of a smoking article is that consumers can place their hands and mouths before and during smoking. Covers the visual appearance and physical behavior of smoking articles when held.

  In particular, consumers expect the smoking article to be of a uniform density in tobacco or other aerosol generating material rod, as well as the substantial stiffness or hardness of the filter when held between fingers or lips. The filter and smoking article are also expected to have a good uniform rounded shape as a whole. Proper hardness of the filter is particularly important in order for consumers to perceive high quality through the resistance of the filter against the crushing forces from the fingers and lips. At the same time, the hardness may not be too high in order to maintain a certain softness in the mouth and to keep the consumer comfortable when smoking. Regular and uniform rounding of filters and smoking articles is also important for quality perception. This is because a non-uniform shape gives the impression that the product quality is low.

  There are several factors that affect both the hardness and roundness of smoking article filters, including weight of cellulose acetate tow, plasticizer amount, and filter packaging quality (basis weight, thickness, porosity), among others. It is. All of these factors need to be appropriately adjusted in order to obtain the appropriate level of hardness and roundness while satisfying the expected sensation and desired taste in the product. In particular, increasing this hardness only by increasing the amount of plasticizer (eg, triacetin) used to form the cellulose acetate filter plug, while effective, detracts from the product's neutral taste. In fact, high concentrations of triacetin tend to break down into acetic acid, and consumers can perceive and feel the smell of acetic acid in smoking articles.

In the prior art, attempts have been made to improve filter hardness by using essentially thicker filter plug wraps (eg, wraps disclosed in WO 2015007399 A1, WO 2015007400 A1 and WO 2015007401 A1). These references disclose a smoking article comprising a filter having a plug with tobacco rod and filter material extending to the downstream most distal end (also referred to as the mouth end of the filter). It is wrapped by a plurality of filter wrapping materials, and a tobacco rod and a filter are connected by a chipping material. The one or more filter wraps have a basis weight between about 50 g / m < ² > and about 100 g / m < ² >, and the resulting filter hardness is at least 90%.

The above patent application basically proposes to use a thick filter wrap with a basis weight between about 50 g / m ² and about 100 g / m ² , which produces a recessed filter. Known in the prior art (see, for example, WO 2011/117584 A1). This indeed provides the improved resistance at the mouth end of the filter as expected and achieved in a recessed filter, due to the greater basis weight and thickness of the filter wrap, which is cellulose acetate. Is further improved by stretching to the end of the mouth end of the filter.

However, such a thick filter construction comprising a filter wrap with a large basis weight has several disadvantages, particularly in terms of manufacturing and cost. Indeed, use of a thick filter wrapping material having a basis weight between about 50 g / ^{m 2} ~ about 100 g / ^{m 2,} the standard filter packaging having a basis weight of between 20g / ^{m 2} ~30g / m 2 This results in a substantial speed reduction of up to 25-30% compared to the normal speed of the filter manufacturing equipment that produces the material. When changing the brand, further adjustment of the filter manufacturing machine is required, or even replacement of specific equipment parts may be required, resulting in reduced productivity and increased manufacturing costs.

  The use of thick filter packaging further requires more frequent cleaning of the filter making machine. This is due to the generation of dust in the process, which brings further disadvantages in productivity and cost. In addition, because thick filter wrapping materials are less elastic than standard thin filter wrapping materials, once the filter wrapping material is wrapped around the filter's cellulose acetate plug, it is due to the inherent stiffness of the wrapping material. As a result, a filter with less roundness can be obtained.

  Therefore, in order to improve the perception of quality by consumers, while showing improved hardness and uniform roundness, at the same time, even if the impact on manufacturing speed and cost compared to the above-mentioned prior art exists, There is a need for a smoking article having a different filter structure.

  One of the objects of the present invention is to provide an improved smoking article comprising a filter that satisfies the above requirements.

<Outline of the present invention>
According to a first aspect of the present invention, the inventors have found that the disadvantages of prior art smoking articles are smoking articles, such as cigarettes,
Tobacco rod,
A filter comprising at least one filter material plug packaged by one or more filter packaging materials, and a tipping material connecting the tobacco rod and the filter,
The one or more filter wrapping material greater than 23 g / ^{m 2,} having a smaller basis weight than 50 g / ^{m 2,} was found to be overcome by the cigarette.

  At least one filter material plug forming the filter has a plasticizer amount between about 5% and 10%. The amount of plasticizer can be between about 7% and 10%, such as between 7% and 9%, such as between 6% and 8%, and such as about 8%. By setting it as the amount of plasticizers of such a value, damage to filter material can be prevented, obtaining desired hardness about a filter.

  For a smoking article that is bonded to a tobacco rod by a tipping material, the hardness measured at any point on the filter may be less than about 90%.

Advantageously, we use a plug wrap having a basis weight of greater than 32 g / m ^{2 and} less than 50 g / m ^{2 for} a filter material plug in the filter simply having a hardness value of less than 90%. Thus, it has been found that provision of easy machinability of the plug wrapping material in the manufacture of smoking articles can be achieved without increasing the amount of plasticizer used in the filter material. Therefore, the machine cost is not increased, and simple on-line laser perforation is enabled for the filter. In addition, when a plug packaging material having a basis weight of 50 g / m ² or more is used, a high degree of attention and a powerful laser are required.

According to a second aspect, the present invention relates to a filter for smoking articles. Filter includes at least one filter material plug packaged by one or more filters packaging, one or more filters packaging material has a large 50 g / m ² less than a basis weight from 32 g / m ^2. The plasticizer amount of at least one filter material plug forming the filter is between about 5% and 10%. The amount of plasticizer can be between about 7% and 10%, such as between about 7% and 9%, such as between about 6% and 8%, and such as 8%.

  According to a third aspect, the invention relates to the use of a filter according to the second aspect of the invention in a smoking article.

  Further exemplary embodiments of the present invention are set forth in the dependent claims and in the following detailed description, but are not intended to limit the scope of the present invention and serve to understand and explain the features of the present invention. Only. Variations and modifications of these specific features may be made without departing from the scope of the invention, particularly with respect to other aspects of the invention.

FIG. 1 represents the definition of hardness values used throughout this specification. FIG. 2 is a perspective view in a first configuration of a device for measuring the hardness of a filter or smoking article. FIG. 3 is a side view of the first configuration of the apparatus of FIG. FIG. 4 is a side view of the second configuration of the apparatus of FIG.

<Detailed explanation>
The scope disclosed herein is to be explicitly defined with the opposite meaning, or the term “about” is to be appended unless the context clearly dictates.

  All numerical values or percentages relating to the amount of substance in this application shall be given in wt% unless clearly defined to the contrary or clear from the context.

According to a first aspect of the present invention, it relates to a smoking article, for example a cigarette,
Tobacco rod,
A filter comprising at least one filter material plug packaged by one or more filter packaging materials, and a tipping material connecting the tobacco rod and the filter,
The one or more filter wrapping material has a smaller basis weight greater than 50 g / ^{m 2} from 32 g / ^{m 2,}
The at least one filter material plug forming the filter is a cigarette containing between about 5% and 10% plasticizer.

  For a smoking article that is bonded to a tobacco rod by a tipping material, the hardness measured at any point on the filter may be less than about 90%.

Advantageously, we use a plug wrap having a basis weight of greater than 32 g / m ^{2 and} less than 50 g / m ^{2 for} a filter material plug in the filter simply having a hardness value of less than 90%. Thus, it has been found that provision of easy machinability of the plug wrapping material in the manufacture of smoking articles can be achieved without increasing the amount of plasticizer used in the filter material. Therefore, the machine cost is not increased, and simple on-line laser perforation is enabled for the filter. In addition, when a plug packaging material having a basis weight of 50 g / m ² or more is used, a high degree of attention and a powerful laser are required.

  Throughout this disclosure, the hardness value specified for a smoking article according to the present invention applies the smoking article to a DD60A measurement, ie, a known DD60A densimeter (manufactured and sold by Heinr. Borgwaldt GmbH, Germany) instrument. It corresponds to the measurement of hardness obtained in this way.

The term “hardness” as used throughout this disclosure characterizes resistance to deformation. The hardness value is generally expressed as a percentage. FIG. 1 shows a cigarette that includes a filter wrapping material 102 and a chipping material 101, the cigarette 100 before the load F is applied, and the same cigarette 110 that is applied the load F. Cigarette 100 before being applied load has a diameter D _S. After applying a predetermined load for a predetermined time (however, the load continues to be applied), the cigarette 110 has a (reduced) diameter _DF . Reduction in diameter (r) is the _{r =} D S -D _F. Referring to FIG. 1, the hardness is defined as follows:

Wherein, D _S is the initial (non-compression) is the diameter of the cigarette, D _F is oppressed diameter after being granted a predetermined load given time. The harder the material, the closer the hardness is to 100%.

  As will be described in more detail below, and as generally known in the art, to measure the hardness of a portion of a smoking article (eg, a filter), the smoking article is aligned in one plane in parallel. A predetermined load should be applied to the same part of each smoking article to be measured for a predetermined time. This measurement is performed by attaching a cigarette measuring head and cigarette container to a known DD60A densimeter device (manufactured and sold by Heinr. Borgwaldt GmbH, Germany). The load is applied by two load-applying cylindrical rods that extend to span the diameter of all smoking articles at once. According to the standard measuring method of this device, the measurement should be performed in such a way that there are 20 contact points between the smoking article and the loaded cylindrical rod. In some cases, the filter being measured is long enough that only 10 smoking articles may be required to form 20 contact points, each smoking article contacting both load-applying rods. (Because the smoking article is long enough to stretch between the rods). In other cases, if the filter is too short to achieve this, 20 smoking articles should be used to form 20 contact points, each smoking article being disclosed in detail below. Thus, only one of the load applying rods is in contact.

  Two additional installed cylindrical rods are placed under the smoking article to support the smoking article and counteract the load imparted by each load-applying cylindrical rod. Such an arrangement is described in more detail below and is shown in FIGS. 2 to 4 and is a known prior art arrangement disclosed for example in WO 2015/007400 A1 and WO 2015/007401 A1.

  In the standard operating procedure of such a device, a total load of 2 kg is applied over 20 seconds. After 20 seconds (and with the load still applied to the smoking article), the decrease in diameter (r) in the loaded cylindrical rod is measured and used to determine the hardness according to the above equation. Calculated. The temperature is kept within the range of 22 ± 2 ° C. The above measurement is referred to as DD60A measurement. The DD60A measurement and corresponding apparatus are described in more detail below with reference to FIGS. As will be described in more detail below, the hardness of the filter portion of the smoking article does not vary significantly depending on whether or not the smoking article is smoked. However, the standard method for measuring filter hardness is when the smoking article is not smoked.

  In embodiments of the invention, the hardness of the smoking article measured at any point on the filter that is bonded to the tobacco rod by the tipping material is less than about 90% but greater than about 85%, eg, hardness Is between about 86% and about 88%.

The inventors have interestingly found through standard researches of available filter cigarettes (ie between about 20 g / m ² to about 30 g / m ²⁾ through consumer studies and experimentation with various filter structures. Filter wrapping material having a quantity and a filter wrapping material that achieves a hardness of about 85% by a combination of the conditions of 4-6 wt% plasticizer amount relative to the standard plasticizer amount filter tow material It has been found that once the hardness value reaches only 85% or more, the consumer can actually feel an increase in filter hardness in the fingers and lips. A more interesting study was conducted by the inventors, which showed that consumers did not perceive a substantial increase in hardness at 90% or higher filter hardness. Of course, it does not perceive an increase in the hardness of a filter having a hardness greater than 90% compared to a filter having a hardness between 85% and 90%. However, smoking articles that exhibit 90% or higher hardness require either the use of thick filter wrapping materials having a basis weight of at least 50 g / m ² and / or the use of more plasticizers in the filter tow material. This is accompanied by the above-mentioned drawbacks.

  The one or more filter wraps may include any suitable material or combination of materials. Non-limiting examples of suitable materials include cellulosic materials, cellulosic films, cardboard, paper, recycled tobacco sheets (recon), and combinations thereof. According to certain embodiments, the one or more filter wraps comprise paper.

In embodiments of the present invention, the one or more filter wraps have a basis weight between about 38 and about 49 g / m ² , for example between about 42 and about 48 g / m ^2. For example, having a basis weight of about 45 g / m ² .

  The one or more filter wraps have a thickness between about 50 and about 60 microns, such as about 55 microns. The thickness range for the filter packaging material of such a filter further facilitates the machinability of the filter of the smoking article and contributes to imparting an appropriate roundness to the filter of the finished smoking article. .

  One or more filter wraps may have low porosity. In some embodiments, the one or more filter wraps have a porosity of less than 1000 Coresta units, such as a porosity of less than 500 Coresta units, or a porosity of, for example, less than 100 Coresta units. . The porosity can be as low as 100 Coresta units or less, or 20 Coresta units or less. Additionally or alternatively, the porosity can be greater than about 1 cholesterol unit. Such a low-porosity filter packaging material can contribute to improving the strength of the filter and can contribute to improving the limit load of the smoking article. This is particularly beneficial when the filter has perforations that extend through the tipping paper and one or more filter wraps.

  One or more filter wraps of the filter may be non-porous wraps.

  The filter material can include any suitable material or combination of materials. The type of filter material can be selected to provide the desired hardness. Non-limiting examples of suitable materials include cellulose acetate, cellulose, regenerated cellulose, polylactic acid, polyvinyl alcohol, nylon, polyhydroxybutyric acid, thermoplastic materials such as starch, nonwoven materials, longitudinally drawn fibers and randomly drawn fibers Paper, crepes, PLA fibers, and combinations thereof. All or part of the filter may contain activated carbon or other adsorbent material. The filter may include an adhesive or plasticizer or a combination thereof. According to a particular embodiment, the filter material comprises cellulose acetate.

  The filter material can have any suitable denier per filament (dpf) and total denier (td). In certain embodiments, the filter material is between 1.5 and 6.0, such as between 2.0 and 5.0, between 3.0 and 5.0 denier per filament (dpf), such as 3.8. Denier per filament (dpf). The filter segment may have a total denier of less than about 40,000, such as less than about 38,000, less than about 35,000, less than about 33,000, such as about 30,000.

  In embodiments where the filter has a length between about 20 mm and 30 mm and a circumference between about 20 mm and about 25 mm, the filter is in the range of about 90 mg to about 160 mg, such as in the range of about 100 mg to about 150 mg. Can have a tow weight in the range of about 120 mg to about 140 mg, in the range of about 130 mg to about 138 mg, such as a tow weight of about 136.25 mg.

  At least one filter material plug forming the filter may have a plasticizer amount between about 5% and 10%, for example between 7 and 10%, based on the weight of the filter material. For example, the plasticizer amount can be about 8%. According to a particular embodiment, triacetin is used as plasticizer.

  The chipping material can comprise any suitable material or combination of materials. Non-limiting examples of suitable materials include cellulosic materials, cellulosic films, cardboard, paper, recycled tobacco sheets (recon), and combinations thereof. According to certain embodiments, the chipping material comprises paper.

  In one embodiment, the filter material comprises cellulose acetate with triacetin as the plasticizer, the one or more filter wrapping materials comprise paper, and the tipping material comprises paper.

The chipping material may have a basis weight in the range of about 30 g / m ² to about 44 g / m ² , for example, a basis weight in the range of about 31 g / m ² to about 40 g / m ² , eg, about 31 g / m ² to It may have a basis weight in the range of about 38 g / m ² , for example a basis weight of about 31 g / m ² .

  The chipping material may include a vent region at a location around the filter. The vent region may include perforations that penetrate the chipping material. The amount of ventilation can be selected to provide the desired level of ventilation, including the number, layout, location and size of the perforations.

  The perforations may extend through one or more filter wraps surrounding the filter material plug. Alternatively, the one or more filter wraps can be porous. The chipping material can be a standard pre-perforated chipping material. Alternatively, the chipping material may be drilled sequentially (eg, using a laser) in the manufacturing process depending on the number, size, and location of the desired holes. If the chipping material is sequentially perforated, one or more filter wraps may be perforated simultaneously.

  In one embodiment, the filter includes a filter material plug wrapped in a filter wrap. In such an embodiment, the filter material plug may extend along the entire length of the filter.

  In a further embodiment of the smoking article of the present invention, the filter includes at least one first unwrapped acetate filter material plug. Unwrapped acetate filter material plugs are particularly advantageous because they exhibit their inherent hardness and roundness compared to standard cellulose acetate filter plugs, which are imparted by vapor curing the outer surface of the acetate plugs when making the filter. Is done. Thus, it is not necessary to use a thick filter wrap to improve the filter stiffness.

  If at least one unwrapped acetate filter plug is used, it is further advantageous to provide the filter with at least one second unwrapped acetate filter material plug in another embodiment of the invention. At this time, the first and second unwrapped acetate filter material plugs are overwrapped by one filter wrapping material so that a cavity is defined between the first and second plugs. The use of two unwrapped acetate filter material plugs is particularly advantageous because it allows the formation of a cavity filter with one filter wrap with a relatively low basis weight as proposed in the present invention while improving rigidity. It is. Usually, a multi-plug filter requires two or more layers of filter wrapping material.

  In one embodiment, the filter of the smoking article of the present invention is a friable capsule comprising at least one fluid-releasing member disposed in a cavity, preferably containing an oily or aqueous liquid.

  In one embodiment, particularly where the filter includes a fluid-releasing member, the one or more filter wraps include a water resistant non-porous wrap.

  The length of the filter (which includes the filter material plug and is the total length of the filter measured in a direction substantially parallel to the longitudinal axis of the smoking article) can take any suitable value. However, it may be convenient for the length of the filter to be substantially similar to conventional smoking articles. Thus, the filter of the smoking article can have a length between about 20 mm and 30 mm.

  The circumference of the filter (the total circumference of the filter material plug combined with the chipping material and one or more filter wraps) can take any suitable value. However, it may be convenient for the diameter to be substantially similar to conventional smoking articles.

  The filter may have a circumference between about 20 mm and about 25 mm at any location. That is, the diameter is between about 6.4 mm and about 8.0 mm, and the diameter of the smoking article is the total diameter of the filter material plug combined with the tipping material and one or more filter wraps, Measured in a direction substantially perpendicular to the longitudinal axis of the article.

  The filter may have a pressure drop or tensile resistance between about 20 mmWC and about 140 mmWC, such as between about 40 mmWC and about 120 mmWC, between about 50 mmWC and about 100 mmWC, for example about 70 mmWC.

  The tobacco rod may include any suitable type or types of tobacco materials or tobacco substitutes in any suitable form. The tobacco can be a single type of tobacco or a mixture of two or more types of tobacco. Tobacco can take the form of cut fillers (carved and conditioned tobacco). Tobacco rods are packaged in combustible packaging materials, usually cigarette paper.

According to a second aspect, the present invention relates to a filter for smoking articles. Filter includes at least one filter material plug packaged by one or more filters packaging, one or more filter wrapping material has a smaller basis weight greater than 50 g / m ² from 32 g / m ² . At least one filter material plug forming the filter has a plasticizer amount between about 5% and 10%. The amount of plasticizer can be between about 7% and 10%, such as between about 7% and 9%, such as between about 6% and 8%, such as about 8%.

Advantageously, we use a plug wrap having a basis weight of greater than 32 g / m ^{2 and} less than 50 g / m ^{2 for} a filter material plug in the filter simply having a hardness value of less than 90%. Thus, it has been found that provision of easy machinability of the plug wrapping material in the manufacture of smoking articles can be achieved without increasing the amount of plasticizer used in the filter material. Therefore, the machine cost is not increased, and simple on-line laser perforation is enabled for the filter. In addition, when a plug packaging material having a basis weight of 50 g / m ² or more is used, a high degree of attention and a powerful laser are required.

  In embodiments of the invention, the filter hardness measured at any point of the filter is less than about 90% but greater than about 85%, for example in the range of 86% to 88%.

  The one or more filter wraps may comprise any suitable material or combination of materials as previously described for the first aspect of the invention. Non-limiting examples of suitable materials include cellulosic materials, cellulosic films, cardboard, paper, recycled tobacco sheets (recon), and combinations thereof. According to certain embodiments, the one or more filter wraps comprise paper.

In embodiments of the present invention, the one or more filter wraps have a basis weight between about 38 and about 49 g / m ² , for example between about 42 and about 48 g / m ^2. For example, having a basis weight of about 45 g / m ² .

  The one or more filter wraps may have a thickness between about 50 and about 60 microns, such as about 55 microns. Such a thickness range for the filter packaging material of the filter further facilitates the machinability of the filter and, in addition, contributes to imparting appropriate roundness to the filter as a finished product.

  One or more filter wraps of the filter may be non-porous wraps.

  The filter material may comprise any suitable material or combination of materials as already described for the first aspect of the invention. The type of filter material can be selected to provide the desired hardness. Non-limiting examples of suitable materials include cellulose acetate, cellulose, regenerated cellulose, polylactic acid, polyvinyl alcohol, nylon, polyhydroxybutyric acid, thermoplastic materials such as starch, nonwoven materials, longitudinally drawn fibers and randomly drawn fibers Paper, crepes, PLA fibers, and combinations thereof. All or part of the filter may contain activated carbon or other adsorbent material. The filter may include an adhesive or plasticizer or a combination thereof. According to a particular embodiment, the filter material comprises cellulose acetate.

  The filter material can have any suitable denier per filament (dpf) and total denier (td). In certain embodiments, the filter material is between 1.5 and 6.0, such as between 2.0 and 5.0, between 3.0 and 5.0 denier per filament (dpf), such as 3.8. Denier per filament (dpf). The filter segment may have a total denier of less than about 40,000, such as less than about 38,000, less than about 35,000, less than about 33,000, such as about 30,000.

  In embodiments where the filter has a length between about 20 mm and 30 mm and a circumference between about 20 mm and about 25 mm, the filter is in the range of about 90 mg to about 160 mg, such as in the range of about 100 mg to about 150 mg. Can have a tow weight in the range of about 120 mg to about 140 mg, in the range of about 130 mg to about 138 mg, such as a tow weight of about 136.25 mg. At least one filter material plug forming the filter may have a plasticizer amount of between about 7% and 10%, preferably about 8%, based on the weight of the filter material. According to a particular embodiment, triacetin is used as plasticizer.

  In one embodiment, the filter material comprises cellulose acetate with triacetin as a plasticizer, and the one or more filter wraps comprise paper.

  The perforations may extend through one or more filter wraps surrounding the filter material plug. Alternatively, the one or more filter wraps can be porous.

  In one embodiment, the filter includes a filter material plug wrapped in a filter wrap. In such an embodiment, the filter material plug may extend along the entire length of the filter.

  In a further embodiment of the smoking article of the present invention, the filter includes at least one first unwrapped acetate filter material plug. Unwrapped acetate filter material plugs are particularly advantageous because they exhibit their inherent hardness and roundness compared to standard cellulose acetate filter plugs, which are imparted by vapor curing the outer surface of the acetate plugs when making the filter. Is done. Thus, it is not necessary to use a thick filter wrap to improve the filter stiffness.

  If at least one unwrapped acetate filter plug is used, it is further advantageous to provide the filter with at least one second unwrapped acetate filter material plug in another embodiment of the invention. At this time, the first and second unwrapped acetate filter material plugs are overwrapped by one filter wrapping material so that a cavity is defined between the first and second plugs. The use of two unwrapped acetate filter material plugs is particularly advantageous because it allows the formation of a cavity filter with one filter wrap with a relatively low basis weight as proposed in the present invention while improving rigidity. It is. Usually, a multi-plug filter requires two or more layers of filter wrapping material.

  In one embodiment, the filter of the smoking article of the present invention is a friable capsule comprising at least one fluid-releasing member disposed in a cavity, preferably containing an oily or aqueous liquid.

  In one embodiment, particularly where the filter includes a fluid-releasing member, the one or more filter wraps include a water resistant non-porous wrap.

  The filter may have a pressure drop or tensile resistance between about 20 mmWC and about 140 mmWC, such as between about 40 mmWC and about 120 mmWC, between about 50 mmWC and about 100 mmWC, for example about 70 mmWC.

  The third aspect of the present invention relates to the use of the filter according to the second aspect of the present invention in a smoking article.

<Example>
The present invention will be described with reference to examples, but the scope of the invention is not limited to these specific examples.

  The hardness of all types of smoking articles was measured using a known DD60A densimeter (manufactured and sold by Heinr. Borgwaldt GmbH, Germany). At this time, as described above, the densimeter is provided with a measuring head for cigarette and a cigarette container. Samples were measured according to the recommended method for a known DD60A densimeter (manufactured and sold by Heinr. Borgwaldt GmbH, Germany). That is, a sample of the smoking article was held in a parallel configuration, a total 2 kg load was applied over 20 seconds, and the diameter of the smoking article before and after compression was recorded. The indentation was used to determine the hardness (%) of each smoking article. An apparatus for measuring the filter hardness of a smoking article is shown in FIGS.

  FIG. 2 is a perspective view of an apparatus 4 (eg, DD60A densimeter) for measuring the filter hardness of a smoking article. This device includes two parallel load-applying rods 24 located on a support plate 30. The support plate 30 includes two parallel and spaced apart walls 12, each wall 12 having ten indentations that are evenly spaced. These indentations are arranged to prevent the smoking article 10 from contacting each other during the measurement.

  As shown in FIG. 2, ten similarly designed smoking articles are placed in parallel on one plane and placed on the underlying cylindrical rod 14. The smoking article 10 extends between corresponding recesses in the wall 12, and the smoking article is held in place. The underlying cylindrical rod 14 extends parallel to the wall 12. Each smoking article 10 contacts the lower cylindrical rod 14 at two points, and the total number of contact points between the smoking article to be measured and the lower cylindrical rod 14 is 20.

  In order to measure the hardness of the filter of the smoking article, the smoking article should be placed so that the portion to be measured contacts the underlying cylindrical rod 14. If the part to be measured does not contact both rods because the filter is too short, or if it contacts the rod near the end of the filter to be measured, 20 cigarettes as shown in FIG. This can be achieved by using the back-facing configuration used.

  As shown, the concept of DD60A measurement is that the underlying cylindrical rod is in contact with the sample material to be measured at 20 contact points. If the filter is long enough to extend over the underlying rod, 20 samples can be obtained with 10 samples (shown in FIG. 2). If the filter is not long enough, 20 points can be obtained with 20 samples, as shown in FIG.

  As shown in FIG. 3, a portion of the tobacco rod is removed from each smoking article 10 and the filter portion of each smoking article 10 is placed on a corresponding cylindrical rod 14. In such a case, the hardness of the segment at the mouth end is the object to be measured, so this portion of the filter is placed on the rod 14 and the segment at the mouth end is approximately at the center of the rod 14. If the filter includes a single filter material plug, the filter is located approximately in the center of the rod 14; for example, if a filter having a length of 24 mm is used, the rod 14 is approximately 12 mm from the mouth end of the filter. Be placed. If a filter comprising two filter material plugs is used, the filter is arranged on the rod 14 such that at least one of the plugs is on the center of the rod 14, specifically, the rod 14 has two filters. It is not placed between the material plugs. If desired, the tip of the smoking article that extends away from the cylindrical rod 14 may be supported by the underlying support means. Thereby, it can prevent that a smoking article rotates.

  The device in the first shape shown in FIG. 3 is in a state where the two load-applying cylindrical rods 24 are raised and are not in contact with the smoking article 10. In order to measure the hardness of the smoking article, the load-applying cylindrical rod 24 is lowered to a second shape and brought into contact with the smoking article 10 as shown in FIG. When in contact with the smoking article 10, the load applying rod 24 applies a total load of 2 kg over 20 contact points of the smoking article 10 for 20 seconds. After 20 seconds have passed (in a state where a load is continuously applied to the smoking article), the depression by the load-applying cylindrical rod 24 over the smoking article is determined, and the hardness is calculated using this.

Five measuring filter cigarettes were measured using the method and apparatus described above. All measuring filter cigarettes have a filter length of 84 mm and include a monoacetate filter with a length of 27 mm and a circumference of 24.2 mm. In all cases, the filter material used is cellulose acetate having a total denier of 30,000 and a plasticizer amount of 6.0 wt%, and triacetin is used as the plasticizer. The filter material is packaged by a non-porous filter packaging material, and the ends of the filter and the 57 mm tobacco rod are connected to each other by non-porous chipping paper having a basis weight of 31 g / m ² . Measurements were made on different non-porous filter packaging materials with varying basis weights and thicknesses. Other differences between filter cigarettes are denier per filament, tow weight, pressure drop, and chipping paper thickness. The table below shows the cigarettes to be measured and the measured hardness values.

Claims (15)

A smoking article,
Tobacco rod,
A filter comprising at least one filter material plug packaged by one or more filter packaging materials, and a tipping material connecting the tobacco rod and the filter,
The one or more filter wrapping material has a smaller basis weight greater than 50 g / ^{m 2} from 23 g / ^{m 2,}
The smoking article, wherein the at least one filter material plug forming the filter contains an amount of plasticizer between about 5% and about 10%. The smoking article according to claim 1,
For the smoking article that is bonded to the tobacco rod by the chipping material, the smoking article has a hardness measured at any point of the filter of less than about 90%. The smoking article according to any one of claims 1 to 2,
For the smoking article that is bonded to the tobacco rod by the tipping material, the hardness measured at any point of the filter is greater than about 85%. The smoking article according to any one of claims 1 to 3,
The one or more filter wrapper has a basis weight of between about 42g~48g / ^{m 2,} the smoking article. The smoking article according to any one of claims 1 to 4,
The smoking article, wherein the one or more filter wrapping materials are non-porous wrapping materials. A smoking article according to any one of claims 1 to 5,
The smoking article, wherein the one or more filter wraps have a thickness between about 50-60 microns. The smoking article according to any one of claims 1 to 6,
The filter is a smoking article including one in which one filter material plug is packaged by one filter packaging material. A smoking article according to any one of claims 1 to 7,
The filter comprises at least one first unwrapped acetate filter material plug and at least one second unwrapped acetate filter material plug;
The smoking article wherein the first and second unwrapped acetate filter material plugs are overwrapped by a single filter wrap so that a cavity is defined between the first and second plugs. A smoking article according to claim 8,
The smoking article, wherein the filter includes at least one fluid release member disposed within the cavity. A smoking article according to any one of claims 1 to 9,
The smoking article, wherein the one or more filter wrapping materials comprise a water resistant non-porous wrapping material. A smoking article according to any one of claims 1 to 10,
The smoking article, wherein the filter has a length between about 20 mm and 30 mm. The smoking article according to any one of claims 1 to 11,
The smoking article, wherein the filter has a circumference between about 20 mm to about 25 mm at any location. A smoking article according to any one of claims 11 to 12,
A smoking article, wherein the filter has a tow weight in the range of about 90 mg to about 160 mg. A filter for smoking articles,
Including at least one filter material plug packaged by one or more filter wrapping materials;
The one or more filter wrapping material, 32 g / ^{m 2} have greater than 50 g / ^{m 2} less than the basis weight, the at least one filter material plug forming the filter, from about 5% to 10% A filter containing an amount of plasticizer in between.   15. A filter according to claim 14, wherein the filter is incorporated in a smoking article.