JP2012504972A - Smoking goods - Google Patents

Abstract

  A smoking article comprising a smoking material rod and a first sheet material comprising at least one diluent. This diluent is included in an amount sufficient to dilute the emissions exiting it during combustion of the smokable rod.

Description

  The present invention relates to a smoking article comprising a rod wrapped with a smoking material.

  Some smoking articles include a smokable rod that has an outer wrapper and a sheet or wrap disposed between the rod and the outer wrapper.

  For example, the following Patent Document 1 includes a smoking material rod wound around a wrapper and a web material containing an adsorbent and a flavorant, and the web material is a smoking article positioned between the smoking material rod and the wrapper. Disclosure.

  Patent Documents 2 and 3 below disclose cigarettes including a tobacco column surrounded by outer wrap paper and an inner wrapper partially extending in the longitudinal direction of the tobacco column. This inner wrapper may contain a humectant.

  Patent Literature 4 below discloses a smoking article including a smoking material rod wrapped with a wrapping material. The wrapping material includes a base sheet having a major surface and a plurality of bands coated in a pattern on the major surface, each of the bands having at least two web material layers, at least one of which is a web layer. Contains flavoring. The wrapping material may be provided with a coating comprising a humectant, and the coating may comprise 1-5% of the humectant based on its coating composition.

  The following Patent Document 5 discloses a cigarette in which a smoking material rod is wrapped with a wrapping material to form a smoking rod. This wrapping material contains up to 10% by weight of a humectant. However, use of an adsorbent for this wrapping material is not disclosed.

  U.S. Patent No. 6,057,059 discloses a cigarette including an inner segment made of smoking material, a cover for the segment, an outer segment made of smoking material, and a rod having a cover for the segment. However, the use of adsorbents for these covers is not disclosed.

  However, despite such teaching content, there is still a need for improvement in the quality of smoking articles.

  An object of the present invention is to provide an improved smoking article.

In one embodiment of the present invention,
A smoking rod,
A first sheet comprising at least one diluent,
A smoking article is provided wherein the diluent is included in an amount sufficient to dilute the emissions exiting it during combustion of the smokable rod.

  The at least one diluent is present in the first sheet material by about 5 to 80% by weight, preferably about 5 to 70%, more preferably about 10 to 60%, more preferably about 20 to 50%. Is preferred. Preferably the diluent is at least one selected from the group consisting of polyhydric alcohols, glycerol, propylene glycol, triethylene glycol, esters, triethyl citrate, triacetin, high boiling hydrocarbons, non-polyols, glycols, sorbitol and lactic acid. Aerosol forming agent. Triacetin is particularly preferred.

  Preferably, the first sheet material further includes at least one dilution stabilizing means and / or at least one adsorbent. The dilution stabilizing means or the adsorbent is preferably an integral component in the first sheet material. The dilution stabilizing means or adsorbent is preferably selected from the group consisting of zeolite, sepiolite, clay, silica gel, activated alumina, minerals, resin and carbon, and particularly preferably the adsorbent is activated carbon. Is preferred. The activated carbon is preferably granular, powdery or particulate and has an average particle size of less than 250 μm, preferably less than 100 μm, preferably less than 50 μm, preferably less than 20 μm. The activity level of the activated carbon is not particularly limited, but it is advantageous to be a highly active carbon. Preferably the activated carbon has a carbon tetrachloride activity level of 30-180%, more preferably 60-120%.

  The adsorbent or dilution stabilizing means is preferably less than 80% by weight of the first sheet material, more preferably less than 50% by weight, more preferably about 10 to 45% by weight. Is preferred.

  The smoking article of the present invention can take a plurality of configurations. In one embodiment, the first sheet material extends over the entire length of the smokable rod and is wound around the outside of the smokable rod. In this embodiment, the first sheet material includes a diluent and serves as a wrapper for supporting the smoking material rod.

  In another embodiment, the smoking article further comprises a second sheet material, preferably free of diluent, that wraps the entire length of the smoking material rod. Thus, the second sheet material serves as a wrapper for the smoking article and supports the smoking material rod. If a second sheet material is provided, the first sheet material may also extend over the entire length of the smoking material rod, or the second sheet material exists as a wrapper that mechanically supports the smoking material rod. As such, it may extend only over a portion or a plurality of individual portions of the smokable rod. The use and location of such a small portion provides flexibility to the cigarette design by affecting the diffusibility of the wrapper, tar tendency and dilution release.

  When providing both the 1st and 2nd sheet | seat material, it is preferable that a 2nd sheet | seat material is located in the outer side of a 1st sheet | seat material with respect to the axis | shaft of a smoking material rod. In one embodiment, the first sheet material may be located directly between the smoking material rod and the second sheet material. In another embodiment, the first sheet material is positioned inside the smoking material rod so that the smoking material is positioned coaxially between the first sheet material and a second sheet material that functions as an outer wrapper. . The first sheet material is rolled into a roll (a “Swiss roll” type structure in which a roll / twisted twisted paper is provided at the center of the rod or a twisted twisted structure), and the second sheet material is wound. And may be positioned within the smoking material rod coaxially.

  At least one of the first sheet material and the second sheet material has a thickness of 20 to 300 μm.

It is an expanded cross-sectional view of a smoking article incorporating the present invention. It is an expanded cross-sectional view of a smoking article incorporating the present invention. It is an expanded cross-sectional view of a smoking article incorporating the present invention. It is an expanded cross-sectional view of a smoking article incorporating the present invention. It is an expanded cross-sectional view of a smoking article incorporating the present invention. It is an expanded cross-sectional view of a smoking article incorporating the present invention. It is an expanded cross-sectional view of a smoking article incorporating the present invention. It is an expanded cross-sectional view of a smoking article incorporating the present invention. It is an enlarged view of the edge part which is not the filter side of the smoking article by this invention. It is an enlarged view of the edge part which is not the filter side of the smoking article by this invention. It is an enlarged view of the edge part which is not the filter side of the smoking article by this invention. It is a disassembled perspective view of the smoking article incorporating this invention.

  The present invention will be described in detail with reference to the accompanying drawings so that the present invention can be easily understood and implemented.

  Applicant believes that if the smoking article is made with a first sheet material comprising a smoking material rod and diluent and, optionally, an adsorbent and / or dilution stabilizing means, a smoke component generated from the smoking material; It has been discovered that the ratio of total tar content decreases with dilution with the eluted diluent. Further, the amount of smoke component generated from the smoking material is reduced by the presence of the first sheet material. In addition to providing a medium for containing the diluent, the first sheet material also functions as a wrapper that wraps the entire length of the smoking material rod, eliminating the need for additional wrappers. In addition to this, a second sheet material may be further provided. If the second sheet material forms a wrapper on the outside of the first sheet material, the applicant shall not allow the presence of the first sheet material diluent to cause a stain on the second sheet material. I found

  A new and inventive solution of the current problems of the prior art to improve the known smoking material has therefore become clear.

  If a second sheet material is present, this sheet material may be a wrapper material comprising a web or cast material known to those skilled in the art, such as a cellulosic paper web or recycled tobacco sheet material. Also, coating, treatment or chemical modification intended to reduce sidestream smoke or ignitability may be incorporated. The second sheet material may or may not include an adsorbent and / or a filler that may or may not be a dilution stabilizing means.

  The wrapper material is generally continuous around the outer periphery of the smoking material rod. Normally, no wrapper material is provided at both ends of the rod, but such a configuration is also within the scope of the present invention.

  The second sheet material has a thickness of 5 to 500 μm, for example 10 to 300 μm or 20 to 60 μm.

  The first sheet material may be any web material known to those skilled in the art, such as cellulosic paper web or recycled tobacco sheet material. Also, coating, processing or chemical modification may be incorporated. The first sheet material may include a filler. The first sheet material also includes an adsorbent and / or dilution stabilizing means.

  In various embodiments, the first sheet material may be coextensive with the second sheet material, or may be provided only in one or more individual portions of the length of the smoking material rod. The first sheet material may be disposed between the second sheet material, which can be said to be “inside” the second sheet material, and the smoking material, or the surface of the second sheet material opposite to the smoking material. Or you may provide in the "outside" of the 2nd sheet material. In one embodiment, the first sheet material forms a single path extending around only a portion of the inner surface of the second sheet material around the entire circumference.

  When the first sheet material has a plurality of portions or a patch shape, the patch may have any shape. For example, the patch may have a plurality of band shapes arranged at intervals in the longitudinal direction of the smoking material rod. Alternatively, the patch may be in the form of a strip spaced circumferentially extending along the entire length or part of the smoking material rod. Furthermore, the patch may be a combination of these bands and strips. This band and strip combination may be located on the inner surface, the outer surface or both surfaces of the second sheet material.

  When more than one sheet material is used in the smoking article, for example when multiple strips, patches or complete packaging materials are present, the composition of each sheet material may be the same or different from the composition of the other sheet materials. Good.

  The thickness of the first sheet material is 5 to 500 μm, for example, 10 to 300 μm or 20 to 60 μm. However, some thicker materials may be used, for example, as a longitudinally extending strip.

  The first sheet material includes one or more diluents. Inclusion of a diluent allows for the production of a smoking article that generates an aerosol comprising smoke generated from the smoking material when smoked, such as tobacco smoke and one or more eluted diluents.

  Suitable diluents for use in the first sheet material include aerosol forming means utilizing a wide range of materials known to those skilled in the art. Examples thereof include polyhydric alcohols such as glycerol, propylene glycol, sorbitol and triethylene glycol, esters such as diacetin, triethyl nitrate, isopropyl myristate, triacetin, high-boiling hydrocarbons or lactic acid. The diluent is preferably triacetin, triethyl nitrate or isopropyl myristate.

  If diluents and adsorbents and / or dilution stabilizing means are present, they can take any suitable form. For example, it may be a solid such as a liquid, grain, powder, crystal or other particulate form, such as a nanoparticle, molecular cage structure, clathrate.

  The one or more adsorbents and / or dilution stabilizing means may be selected from any suitable material known to those skilled in the art. Examples of such materials include zeolite, sepiolite, clay, activated alumina, minerals, resin, silica gel and carbon. In a preferred embodiment, the adsorbent and / or dilution stabilizing means is carbon such as activated carbon. When activated carbon is used, its activity level can be measured by determining the value of carbon tetrachloride (CTC) percent known in the art. Briefly, the carbon is weighed, exposed to CTC, and the carbon is weighed again. The increase in carbon weight is then calculated as a percentage.

  For optimal use in the present invention, the activated carbon is preferably highly active and may have a maximum activity of 180% CTC. More preferably, the activated carbon has an activity of 40 to 160% CTC. In connection with the selection of one or more adsorbents or dilution stabilizing means, it will be appreciated that the adsorbent or dilution stabilizing means present in the first sheet material may be the same in each of the web material layers, May be different. That is, when multiple web material layers, strips or bands are used, the adsorbent and / or dilution stabilizing means or combination of adsorbent and / or dilution stabilizing means is the same or different in each web material layer, strip or band. Also good.

  The first sheet material comprising one or more adsorbents and / or dilution stabilizing means may be paper containing activated carbon.

  In a further embodiment of the invention, the smokable rod comprises a centrally located core of smokable material completely wrapped along its length and an annular rod of smokable material surrounding the core. The central core is encased in a first sheet material along its entire length, or a third core that supports the first sheet material in several parts either inside or outside the first sheet material. It may be wrapped with a sheet material. The third sheet material used to wrap the central core may be the same as or different from the second sheet material wrapping an annular rod of smoking material. In addition, the smoking article may include a portion of the first sheet material that is a band, strip or combination thereof located on the inner surface, outer surface or both surfaces of the second sheet material that encloses an annular rod of smoking material.

  The smoking material may be any smoking material suitable in the art, even in the form of a central core with a solid rod or an annular rod. For example, the tobacco-containing smoking material may be a modified tobacco smoking material such as expanded tobacco, extracted tobacco, physically, chemically and / or biochemically modified tobacco, or a non-tobacco-containing smoking material. It may also be a foamed and / or extruded material. The smoking material is preferably a combination of a tobacco-containing material and a non-tobacco-containing material, or a material composed solely of tobacco material. Suitably the tobacco material comprises one or more of petioles, leaf blades and tobacco dust. Examples of tobacco materials include those containing one or more of the following types of tobacco: Virginia or flue-cured tobacco, burley tobacco, oriental tobacco, regenerated tobacco, petiole and modified tobacco. Preferably, the smoking material comprises a blend of tobacco materials or a blend of tobacco and non-tobacco materials. Where a central core is present, it may include a different smoking material than the annular rod smoking material.

  The smoking article further includes a filter element located at one end of the smoking material rod. Such a filter element may contain, for example, an adsorbent. The filter element may include multiple sections, such as a dual or triple filter. Suitable filters are known to those skilled in the art. Filters known in the art include a fibrous filter material in which the particulate adsorbent is a fibrous filter material, such as a Dalmatian filter dispersed in a fibrous cellulose material, and a cavity filter in which the cavity portion of a filter composed of a plurality of segments contains an adsorbent. There is.

  Smoking articles according to the present invention can be easily manufactured by techniques known in the art.

  As described above, FIGS. 1-8 are enlarged cross-sectional views of the smoking article of the present invention. The same reference numbers are used for the same materials or structures in the various figures.

  FIG. 1 shows a smoking article 10 including a smoking material rod 11 fully wrapped in a wrapper including a first sheet material 13 and a second sheet material 12. The second sheet material 12 extends over substantially the entire circumferential surface of the smoking material rod 11. In the embodiment of FIG. 1, the first sheet material 13 is located along substantially the entire inner surface of the second sheet material 12 so as to separate the second sheet material 12 from the smoking material rod 11.

  If the first sheet material 13 has strength and rigidity suitable for supporting the smoking material rod 11, the second sheet material 12 is omitted and the first sheet material 11 is used as the smoking material rod. 11 may extend along the entire length of 11 and function as a wrapper and diluent-containing medium.

  The smoking article of FIG. 1 has a general cigarette shape in that a filter rod 14 is provided. The filter rod 14 is wrapped in a plug wrapper 15, and the wrapped filter rod is joined to the wrapped smoking material rod with a tipping paper 16. The components and preparation of the filter rod 14, plug wrapper 15 and tipping paper 16 are conventional and well known in the art.

  FIG. 2 shows a smoking article 10 having a first sheet material 13 located between the second sheet material 12 and the smoking material rod 11. In this embodiment, the first sheet material 13 has a patch shape that covers a part of the circumference and the length in the longitudinal direction of the smoking material rod 11. In the embodiment shown in FIG. 3, the first sheet material 13 is provided as a plurality of patches, some of which are at the end of the filter rod 14 of the smoking material rod 11 and some of which are at the opposite end. Is provided.

  FIG. 4 shows a smoking article in which the first sheet material 13 is located outside the second sheet material 12. That is, the second sheet material 12 is located between the smoking material rod 11 and the first sheet material 13. In this aspect, the first sheet material 13 covers substantially the entire outer surface of the wrapper 12.

  FIG. 5 has a circumferentially extending patch located at the filter end of the first sheet material 13 located outside the second sheet material 12.

  The embodiment shown in FIGS. 6 to 8 represents a smoking article 10 having a core 17 made of smoking material coaxially located within the smoking material rod 11. 6 and 7, the smoking material core 17 is wrapped in a first sheet material 13 that extends along the entire length of the smoking material rod 11.

  In another embodiment (not shown), the smoking article has the structure shown in FIG. 6 having a core 17 made of smoking material coaxially located in the smoking material rod 11, but in this embodiment, an inner wrapper. Both the outer wrapper and the outer wrapper are formed from a first sheet material that includes a diluent.

  In FIG. 8, the smoking material core 17 is wrapped in a third sheet material that may be the same as the second sheet material 12. A second patch in which a patch of the first sheet material 13 is arranged around the outer circumference of the third sheet material located around the smoking material core 17 and around the outer circumference of the smoking material rod 11 and this smoking material rod. Are provided between both of the sheet materials 12.

  9 to 11 show an enlarged end portion of the smoking article on which no filter is provided. 9 shows the embodiment of FIG. 1, FIG. 10 shows the embodiment of FIG. 3, and FIG. 11 shows the embodiment of FIG.

  FIG. 12 is an exploded perspective view of the smoking article 10 having the smoking material rod 11 and the filter rod 14. The smoking material rod 11 is provided with a patch made of the first sheet material 13 at the end of the filter rod 14. The second sheet material 12 is provided outside the smoking material rod 11 over the entire length. A plug wrapper 15 and chipping paper 16 are provided.

  Several cigarettes having a 56 mm long tobacco rod and a cellulose acetate filter with a circumference of 24.6 mm and a length of 27 mm were produced. Ventilation holes were not provided at the tip of these cigarettes. The specification of the second sheet material that wraps the tobacco rod is a paper that contains mixed fibers, has a transmittance of 50 CU and has 2% potassium nitrate (combustion additive).

  Tobacco rods consisted of a blend of fluidly cured virginia and Burley leaf tobacco.

  The layer of the 1st sheet material containing activated carbon was provided over the full length and the perimeter of the tobacco rod. A wrapper made of the second sheet material is provided on the outside of the first sheet material over the entire length and the entire circumference of the cigarette. A cigarette of similar design is shown in FIG.

  The first sheet material containing carbon contained 39% fiber and 36% activated carbon. This activated carbon had 100% carbon tetrachloride (CTC) activity.

  Four different levels of triacetin diluent were added to the carbon paper. Initially a control level was produced with unimpregnated carbon-containing paper. Test levels include paper impregnated with triacetin 10, 19, or 28 mg / cigarette.

  Approximately 2 weeks after production, the amount of triacetin in the smoke was measured (Table 1), and the dilution rate was calculated (Table 2). The dilution rate was calculated as [dried particulate matter (mg / cigarette) excluding triacetin (mg / cigarette) / nicotine in smoke] × 100. These cigarettes were stored at 20 ° C. and 60% and the analysis was repeated at 3 and 6 months (Tables 1 and 2) to show that triacetin was stable in the cigarette.

  It should be noted here that the control level did not contain the triacetin diluent in the sheet material, but triacetin was present in the cellulose acetate cigarette filter used here, indicating the triacetin level measured in the control product. .

  Although the cigarette was visually evaluated, no stains that would make the cigarette look worse during the survey period.

  Several cigarettes having a 56 mm long tobacco rod and a cellulose acetate filter with a circumference of 24.6 mm and a length of 27 mm were produced. The specification of the second sheet material that wraps the tobacco rod is a paper that contains mixed fibers, has a transmittance of 50 CU and has 2% potassium nitrate (combustion additive). Tobacco rods consisted of a blend of fluidly cured virginia and Burley leaf tobacco.

  A cigarette rod having a circumference of 16 mm and a length of 56 mm was wrapped with a first sheet material containing carbon and arranged to extend in the longitudinal direction at the center of the cigarette rod. The first sheet material containing carbon contained 39% fiber and 36% activated carbon. This activated carbon had 100% carbon tetrachloride (CTC) activity.

  The test cigarette design was impregnated with 16 mg of triacetin in a first sheet material containing carbon. A control level identical to this, but without impregnating the carbon-containing sheet, was made. A similar cigarette design is shown in FIG.

  These samples and control cigarettes were tip ventilated to produce 6 mg / cigarette of dry particulates without nicotine. The levels and dilutions of triacetin in the smoke were obtained (Table 3). The dilution rate was calculated as [dried particulate matter (mg / cigarette) excluding triacetin (mg / cigarette) / nicotine in smoke] × 100. As is apparent from the data below, the test cigarette of Example 2 achieved a smoke dilution of greater than 22%.

  The cigarette was visually evaluated, but no stains that made it look bad were generated.

  The above description and examples have been given merely to illustrate the invention and are not intended to be limiting.

International Publication No. WO2005 / 082180 International Publication No. WO2006 / 023181 International Publication No. WO2006 / 01495 US Pat. No. 6,997,190 US Patent Application 2003/0178039 US Pat. No. 6,257,243

Claims (19)

A smoking rod,
A smoking article comprising a first sheet comprising at least one diluent,
A smoking article wherein the diluent is included in an amount sufficient to dilute the emissions exiting the smoker rod during combustion.   The at least one diluent is present in the first sheet material by about 5 to 80% by weight, preferably about 5 to 70%, more preferably about 10 to 60%, more preferably about 20 to 50%; The smoking article according to claim 1.   Formation of at least one aerosol wherein the diluent is selected from the group consisting of polyhydric alcohols, glycerol, propylene glycol, triethylene glycol, esters, triethyl citrate, triacetin, high boiling hydrocarbons, non-polyols, glycols, sorbitol and lactic acid The smoking article according to claim 1 or 2, which is an agent.   The smoking article according to any one of claims 1 to 3, wherein the first sheet material further includes at least one dilution stabilizing means and / or at least one adsorbent.   The smoking article according to claim 4, wherein the dilution stabilizing means or the adsorbent is a component integrated in the first sheet material.   The smoking article according to claim 4 or 5, wherein the dilution stabilizing means or adsorbent is selected from the group consisting of zeolite, sepiolite, clay, silica gel, activated alumina, minerals, resin and carbon.   The smoking article according to claim 6, wherein the adsorbent is activated carbon.   The smoking article according to claim 7, wherein the activated carbon is granular, powdery or particulate and has an average particle size of less than 250 μm, preferably less than 100 μm, preferably less than 50 μm, preferably less than 20 μm.   9. A smoking article according to claim 7 or 8, wherein the activated carbon has a carbon tetrachloride activity level of 30-180%, more preferably 60-120%.   The adsorbent or dilution stabilizing means has a loading of less than 70 wt% of the first sheet material, preferably less than 50 wt%, more preferably about 10 to 45 wt%. The smoking article according to any one of the above.   The smoking article according to any one of claims 1 to 10, wherein the first sheet material is wound around a circumference of the smoking material rod and extends over the entire length of the smoking material rod.   A second sheet material that does not include a diluent, the second sheet material being wound around the circumference of the smokable rod and extending along the entire length of the smokable rod. 11. A smoking article according to any one of 11 above.   The smoking article of claim 12, wherein the first sheet material extends over a portion of the length of the smoking material rod.   The smoking article of claim 13, wherein the first sheet material extends across a plurality of individual portions of the smoking material rod.   The smoking article according to any one of claims 12 to 14, wherein the second sheet material is located outside the first sheet material with respect to an axis of the smoking material rod.   The smoking article according to any one of claims 12 to 15, wherein the first sheet material is located between the smoking material rod and the second sheet material.   The smoking article according to any one of claims 12 to 15, wherein the first sheet material is located inside a smoking material rod.   The smoking article according to claim 17, wherein the first sheet material is wound in a roll shape and is positioned in the smoking material rod coaxially with the second sheet material.   19. A smoking article according to any one of claims 12 to 18, wherein at least one of the first and second sheet materials has a thickness of 20 to 300 [mu] m.

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