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US20130306085A1 - Methods and articles to control the gas-particle partition of an aerosol to enhance its taste characteristics - Google Patents

Methods and articles to control the gas-particle partition of an aerosol to enhance its taste characteristics Download PDF

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Publication number
US20130306085A1
US20130306085A1 US13/894,774 US201313894774A US2013306085A1 US 20130306085 A1 US20130306085 A1 US 20130306085A1 US 201313894774 A US201313894774 A US 201313894774A US 2013306085 A1 US2013306085 A1 US 2013306085A1
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United States
Prior art keywords
filter
smoking article
foil
reflecting material
aerosol
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Abandoned
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US13/894,774
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English (en)
Inventor
Luis A. Sanchez
Steven E. Brown
Kai Tang
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Loec Inc
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Loec Inc
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Priority to US13/894,774 priority Critical patent/US20130306085A1/en
Assigned to LOEC, INC. reassignment LOEC, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BROWN, STEVEN E., SANCHEZ, LUIS A., TANG, KAI
Publication of US20130306085A1 publication Critical patent/US20130306085A1/en
Abandoned legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/04—Tobacco smoke filters characterised by their shape or structure
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/02—Manufacture of tobacco smoke filters
    • A24D3/0275—Manufacture of tobacco smoke filters for filters with special features
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/06—Use of materials for tobacco smoke filters
    • A24D3/067—Use of materials for tobacco smoke filters characterised by functional properties
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/06—Use of materials for tobacco smoke filters
    • A24D3/16—Use of materials for tobacco smoke filters of inorganic materials

Definitions

  • the present invention relates generally to altering the taste characteristics of an aerosol, and more particularly, to a method and articles for controlling an inner filter temperature of an aerosol-generating product or device to alter the aerosol taste characteristics.
  • Conventional mentholated and non-mentholated less than full flavor cigarettes include perforated or porous filter paper wrapper to provide air dilution of the mainstream smoke.
  • perforated filter wrapper paper to provide air dilution of the mainstream smoke.
  • fresh air penetrates the perforated filter wrapper paper and dilutes the cigarette mainstream smoke. Accordingly, total delivered cigarette mainstream smoke is reduced by the air dilution. In this manner, the overall particulate and gas phase components of the mainstream smoke are reduced.
  • cigarette mainstream smoke is characterized as formed by particulates, semi-volatiles, and volatile components.
  • the distributions of these components determine the smoking experience.
  • Abatement technologies implemented upstream the cigarette mouth piece and toward the heating zone i.e., air dilution, adsorption beads, column aeration modification, incorporation of modified tobacco leaf and stem
  • the present invention is directed to methods, compositions, and cigarette designs to control the gas-particulate partition of smoke components in the delivered smoke of smoking articles to enhance their organoleptic properties with respect to full flavor (FF) cigarettes and reduced tar or less than full flavor (LF) cigarettes.
  • FF full flavor
  • LF full flavor
  • a method of manufacturing a smoking article having enhanced taste characteristics comprises: selecting a heat adsorbing or reflecting material to apply to a filter of the smoking article, the heat adsorbing or reflecting material having one or more properties associated therewith; and applying the heat adsorbing or reflecting material to the filter, the at least one heat adsorbing or reflecting materials being configured to control the inner temperature of the filter.
  • the heat adsorbing or reflecting material may comprise a metallized foil material.
  • the metallized foil material may comprise one of aluminum, silver, copper or gold.
  • the applying the heat adsorbing or reflecting material may comprise inserting the heat adsorbing or reflecting material into the body of the filter.
  • the applying the heat adsorbing or reflecting material may comprise wrapping a filter absorbing matrix of the filter with the heat adsorbing or reflecting material.
  • the smoking article may comprise a less than full flavor smoking article, and the method may further comprise applying one or more ventilation holes to the filter.
  • the one or more properties may comprise at least one of a type of heat adsorbing or reflecting material, a surface roughness, or a mass.
  • the selecting the heat adsorbing or reflecting material to apply may be based on at least one of the one or more properties.
  • the smoking article may comprise a full flavor smoking article, and wherein the applied heat adsorbing or reflecting material is configured to raise the inner temperature of the filter.
  • the smoking article may comprise a less than full flavor smoking article, and the applied heat adsorbing or reflecting material may be configured to lower the inner temperature of the filter.
  • the method may further comprise determining at least one of a position, size, number and shape of one or more ventilation holes to be applied to the filter to control a temperature gradient of the filter.
  • the method may further comprise determining at least one of a size and a material composition of the heat adsorbing or reflecting material to control a temperature gradient of the filter.
  • a smoking article comprises: a filter material that captures and substantially removes unwanted components in an aerosol; and a foil that is configured to control temperature of the aerosol, so as to provide a full-bodied flavor to the aerosol.
  • a longitudinal length of the foil in the smoking article may comprise at least 50% of a longitudinal length of the filter material.
  • the smoking article may further comprise a hole provided in the foil to control a temperature of the aerosol.
  • the foil may comprise an annular axial foil material.
  • the foil may comprise: aluminum; silver; copper; or gold.
  • the foil may be configured to decrease temperature of the aerosol.
  • a smoking article comprises: a filter material that captures and substantially removes unwanted components in an aerosol; and a foil that is configured to control temperature of the aerosol, so as to provide a full-bodied flavor to the aerosol, wherein: a longitudinal length of the foil comprises at least 50% of a longitudinal length of the filter material; the foil comprises a hole to control temperature of the filter material; the foil comprises an annular axial foil made of at least one of aluminum, silver, copper, and gold.
  • FIG. 1 is a flowchart showing a method for manufacturing a smoking article having enhanced taste characteristics
  • FIG. 2 is a schematic of an example of a smoking article having a metallized foil outer wrapper
  • FIGS. 3A and 3B are schematics of an example of a smoking article having annular coaxial metallized foil wrapper
  • FIGS. 4A and 4B are schematics of an example of a smoking article having a centered coaxial metallized foil wrapper
  • FIGS. 5A and 5B are schematics of an example of a smoking article having a centered coaxial metallized foil insert
  • FIGS. 6A and 6B are schematics of an example of a smoking article having external and internal metallized foil wrappers
  • FIGS. 7A and 7B are schematics of an example of a smoking article having multiple insert foil wrappers
  • FIG. 8 is a graph showing the filter temperature change as a function of puffs over time with respect to conventional cigarettes
  • FIG. 9 is a chart illustrating relative consumer preferences of the taste characteristics of a non-mentholated cigarette embodying the present invention compared to a non-mentholated prior art cigarette;
  • FIG. 10 is a chart illustrating relative consumer preferences of the taste characteristics of a mentholated cigarette embodying the present invention compared to a mentholated prior art cigarette;
  • FIG. 11 is a chart showing the mainstream smoke analyte levels for various cigarettes embodying the present invention.
  • FIG. 12A is a schematic of a method and apparatus for measuring the gas phase and particulate phase components of cigarette mainstream smoke.
  • FIG. 12B shows an example of a gas and particulate phase component (GPPC) measuring apparatus that for measuring the gas phase and particulate phase components of cigarette mainstream smoke;
  • GPPC gas and particulate phase component
  • Methods and articles are described herein for enhancing the taste characteristics of the smoke produced by a smoking article during a smoking experience by controlling the temperature of an inner filter associated with the smoking article.
  • a heat adsorption or reflective material such as a metallized foil material, may be applied to the filter to exercise the temperature control.
  • the metallized foil may be, for example, a metallized foil insert, a metallized foil wrapper, a metallized foil core, etc.
  • the methods described herein may apply to less than full flavor smoking articles, enhancing the taste characteristics to more closely replicate the taste characteristics of a full flavor smoking article. In some aspects, the taste characteristics of a full flavor smoking article may also be further enhanced.
  • the smoking article mainstream smoke is formed by combustion products and vaporized effluents, and they are normally classified as particulates, semi-volatiles, and volatiles. During smoking, they reach the filter and they might condense in the filter depending on their condensation temperature/rate, therefore the smoke stream shows different gas-particle compositional distribution.
  • the gas to particle partitioning coefficient, Kp for aerosol may be determined as follows:
  • Cp is the compound's particle-phase concentration
  • Mo is the mass concentration of the absorbing organic phase (including water)
  • Cg is the compound's gas-phase concentration.
  • Kp can also be predicted from the properties of the partitioning species, where R is the ideal gas constant, T is temperature, f om is the organic fraction of total particulate mass, MW om is the average molecular weight of the absorbing organic (and aqueous) phase, t is the particle-phase activity coefficient, and p is the saturation vapor pressure.
  • equation (1) indicates that Kp depends on the filter temperature, the smoke vapor pressure of its chemical components, the average mass of the particle phase, and the overall mole fraction activity coefficients of the particle phase taste-given compounds.
  • strategies to control Kp to enhance and/or control smoking articles organoleptic properties include, for example, controlling temperature, controlling saturation vapor pressure, and/or controlling the average molecular weight of adsorbing phases.
  • the inner temperature of a filter of a smoking article can be controlled by wrapping the filter with metallized foils or other heat adsorbing or heat reflecting material.
  • a heat adsorbing or reflecting material may be selected for applying to a filter of the smoking article.
  • the heat adsorbing or reflecting material may have one or more properties associated therewith, such as a type, a surface roughness, or a mass, and in some aspects, the selected heat adsorbing or reflecting material is selected based on at least one of the one or more properties.
  • the heat adsorbing or reflecting material may include a metallized foil or film, such as aluminum, silver, copper, or gold. In some aspects, metallized foils or films can be made from chemically inert films (i.e.
  • metal usually but not limited to, aluminum.
  • Metallization may be performed by using a physical vapor deposition process. Aluminum is the most common metal used for deposition, but other metals such as gold, silver, nickel or chromium may also be used. The metal may be heated and evaporated under vacuum conditions. The metal molecules may condense on a cold inert substrate or polymer film, which may be unwound near the metal vapor source. The resultant coating is much thinner than a metal foil could be made, in the range of about 0.5 micrometers.
  • the metallized foil or film may behave as a thermal insulator and/or heat exchanger.
  • the foil properties may be controlled by varying the type, the surface roughness or/and the mass of the foil.
  • aluminum foil alloys may have a thermal conductivity in the range of about 120-180 W/(m.K) compared with about 429 W/(m.K) for silver foil.
  • aluminum foil alloys may have a heat capacity of about 0.90 J/(g.K) compared with about 0.23 (J/g.K) for silver. Accordingly, silver material when used as part of a filter wrapper of a smoking article can remove heat faster from the smoke stream than an aluminum wrapper.
  • Different metal foils can be used alone or in combination to create zones with different thermal properties.
  • the selected heat adsorbing or reflecting material may be applied to the filter, wherein the heat adsorbing or reflecting material may be configured to control the inner temperature of the filter.
  • the heat adsorbing or reflecting material may be provided in the body of the smoking article filter or applied as single/multiple filter wrapper layers, and/or co/off-axial wrappers in intimate contact with the filter material matrix.
  • the heat adsorbing or reflecting material may be configured to cover 50% or more (e.g., along the axial length of the filter) of the plug wrap. It is noted that the heat adsorbing or reflecting material may be configured to cover less than 50% of the plug wrap.
  • the smoking article may be a full flavor smoking article or a less than full flavor smoking article. Where the smoking article is a full flavor smoking article, the applied heat adsorbing or reflecting material may be configured to raise the inner temperature of the filter.
  • the smoking article may be a less than full flavor smoking article, wherein the applied heat adsorbing or reflecting material is configured to lower the inner temperature of the filter.
  • the method 100 may additionally include applying one or more ventilation holes to the filter, as seen at 106 . Applying the one or more ventilation holes may include determining a position, size, number, and/or shape of the one or more ventilation holes to apply to the filter in order to control a temperature gradient of the filter.
  • the filter may optionally include fragrance encapsulates, a tobacco matrix, adsorbent resins and other filter functionality modifiers in the filter material with the metallized foil function.
  • FIG. 2 shows an example of a smoking article 200 that is constructed in accordance with an aspect of the invention.
  • the smoking article 200 may include a tobacco column 202 , a filter absorbing matrix 204 , and a mouthpiece 206 .
  • Filter absorbing matrix 204 may comprise, for example, cellulose acetate, paper, etc.
  • the filter absorbing matrix 204 may be wrapped with a heat adsorbing or reflecting material 208 , such as a metallized foil described herein.
  • a portion (or whole) of the mouthpiece 206 and/or a portion of the tobacco column 202 may also be wrapped with the heat adsorbing or reflecting material 208 .
  • the heat adsorbing or reflecting material 208 may be configured to cover 50% or more (e.g., along the axial length of the filter) of the plug wrap. It is noted that the heat adsorbing or reflecting material 208 may be configured to cover less than 50% of the plug wrap. For less than full flavor smoking articles, one or more ventilation holes 210 may be included in the heat adsorbing/reflecting material 208 .
  • FIGS. 3A and 3B illustrate different views of another example of a smoking article 300 that is constructed in accordance with an aspect of the invention.
  • FIG. 3A shows a longitudinal lengthwise-cut view
  • FIG. 3B shows a cross-sectional view of a portion of the smoking article 300 .
  • Smoking article 300 includes a tobacco column 302 and a mouthpiece 306 .
  • An inner adsorbing matrix 304 of the smoking article 300 may be wrapped with a metallized foil 308 .
  • a portion (or whole) of the mouthpiece 306 and/or a portion of the tobacco column 302 may also be provided with the heat adsorbing or reflecting material 308 .
  • An outer layer 310 of wrap may be wrapped around the adsorbing matrix 304 and adsorbing or reflecting material 308 .
  • one or more ventilation holes 312 may be included in the outer layer 310 .
  • the densities, materials, and formulations of the inner and outer adsorbing layers 304 , 310 may be different or substantially the same, as required to meet desired taste and filtering performance.
  • the inner core (or layer) 304 may include carbon embedded artificial/natural fibers and the outer layer 310 may include virgin cellulose acetate fibers.
  • both the inner and outer layers 304 , 310 may include cellulose acetate having different densities.
  • FIGS. 4A and 4B illustrate yet another example of a smoking article 400 , in accordance with an aspect of the disclosure.
  • FIG. 4A illustrates a longitudinal lengthwise-cut view of the smoking article 400
  • FIG. 4B illustrates a cross-sectional view of the smoking article 400 .
  • Smoking article 400 includes a tobacco column 402 , a mouthpiece 406 , an inner annular coaxial metallized foil 408 , an outer annular coaxial metallized foil 412 and a filtering material 404 .
  • the filtering material 404 may be provided in the substantially cylindrical area formed by the inner metallized foil 408 .
  • the filtering material 404 may be provided in the substantially cylindrical area formed between the inner and outer metallized foils 408 and 412 , surrounding the metallized foil 408 and being surrounded by the outer metallized foil 412 .
  • thermal conditions and tar may be controlled by providing one or more ventilation holes 410 in the outer metallized foil 412 and/or inner metallized foil 408 (not shown).
  • FIGS. 5A and 5B show another example of a smoking article 500 that is constructed according to an aspect of the invention.
  • FIG. 5A shows a longitudinal lengthwise-cut view of the smoking article 500 and
  • FIG. 5B shows a cross-sectional view of the filter portion of the smoking article 500 .
  • a core of non-circular metallized foil (foil core) 508 is provided in a central portion of an adsorbing matrix 504 .
  • the metallized foil core 508 may be positioned along and locate at the central axis of the filter portion.
  • one or more ventilation holes, such as ventilation hole 510 may be included in the adsorbing matrix 504 .
  • the smoking article 500 may include a plurality of metallized foil cores 508 (not shown) that may be positioned equi-distally from each other in the filter portion of the smoking article 500 .
  • the plurality of metallized foil cores 508 may be aligned along the longitudinal axis of the filter portion and located radially (e.g., in the shape of a circle, a star, a square, or any other shape) with respect to the central axis of the filter portion.
  • FIGS. 6A and 6B illustrate yet another example of a smoking article 600 , in accordance with another aspect of the invention.
  • the smoking article 600 comprises an inner longitudinal cross-shaped metallized foil (foil core) 608 provided in the center of an adsorbing matrix 604 of the filter portion.
  • the smoking article 600 may comprise an outer annular metallized foil 602 that is wrapped around the adsorbing matrix 604 .
  • heat is conducted through both the metallized foil core 608 and outer annular metallized foil 602 .
  • One or more ventilation holes 610 may be included in the outer annular metallized foil 602 and/or adsorbing matrix 604 for less than full flavor cigarettes.
  • FIGS. 7A and 7B show an example of a smoking article 700 , constructed according to a further aspect of the invention, which includes multiple non-circular (e.g., cross-shaped) metallized foils 708 provided in an adsorbing matrix 704 of the filter portion of the smoking article 700 . While not shown, an outer layer of metallized foil may also be included and wrapped around the adsorbing matrix 704 . Ventilation holes 710 may be included in the outer metallized foil (not shown) and/or the adsorbing matrix 704 for less than full flavor smoking articles.
  • non-circular (e.g., cross-shaped) metallized foils 708 provided in an adsorbing matrix 704 of the filter portion of the smoking article 700 . While not shown, an outer layer of metallized foil may also be included and wrapped around the adsorbing matrix 704 . Ventilation holes 710 may be included in the outer metallized foil (not shown) and/or the adsorbing matrix 704 for
  • FIG. 8 is a diagram showing the filter temperature change as a function of puffs over time for a full flavor (FF) cigarette and a less than full flavor (LF) cigarette.
  • FIG. 8 shows an example of maximum temperature change during a 2 second puff cycle, 28 second wait cycle, and a 50 ml syringe puff in a single port smoking machine (e.g., GPPC measuring apparatus 950 , shown in FIG. 9B ).
  • the sampled FF cigarettes included 80 mm cigarettes of 134 mm H 2 O pressure drop and 14 mg of tar.
  • the sampled LF cigarettes included 100 mm cigarettes of 130 mm H 2 O pressure drop.
  • FIG. 8 separately shows the maximum temperature changes in the filter zones of (1) a full flavor cigarette with a metallized foil as compared to a control full flavor cigarette having no metallized foil and (2) a less than full flavor cigarette with a metallized foil compared to a control less than full flavor cigarette having no metallized foil.
  • a thermocouple was placed 15 mm away from the cigarette mouth piece and the temperature was read during smoking.
  • FF designates a graph of the inner filter temperature difference between the full flavor cigarettes (i.e., having no ventilation holes) with and without a metallized foil.
  • LF designates a graph of the inner filter temperature difference between less than full flavor cigarettes (i.e., having ventilation holes located 5 mm upstream from a thermocouple) with and without a metallized foil.
  • the full flavor cigarette having a metallized foil has higher inner filter temperatures than the control FF cigarette.
  • the temperature differential increases within the sensitivity of the thermocouple, as the fire cone moves closer to the mouth piece.
  • the opposite behavior was exhibited in less than full flavor cigarettes having a metallized foil.
  • the less than full flavor cigarette having a metallized foil has lower filter temperature than the control LF cigarette.
  • the relative inner filter temperature of the less than full flavor cigarette having a metallized foil decreases as the fire cone moves closer to the mouth piece during the smoking cycle. This is shown by the increasing negative temperature differential between the less than full flavor cigarette having a metallized foil and the control LF cigarette.
  • the metallized foil acts as a heat shield so it contains the heat within the metallized foil measured zone.
  • two zones of different thermal characteristics are created. One of them is a warm zone which is located downstream of the ventilation holes which is warmed by the smoke stream, and the second, is a cool zone located upstream of the ventilation holes formed by the cooling of the air entering through the ventilation holes. Because the second zone is cooler than the first zone, heat moves from the hotter to the cooler zone therein, and acts as a heat sink and reduces the temperature of the warm smoke. So in the LF case, it was discovered that ventilated cigarettes that use metallized foil show an inner temperature gradient. Therefore, it has been determined that by controlling the position, size, number and shapes of the ventilation holes and the size and material composition of the metallized foil, it is possible to control the filter temperature gradient.
  • Table II shows tar, nicotine, and carbon monoxide (TNCO) delivery in accordance with several examples illustrating principles of the invention.
  • the methods described herein may be applied to less than full non-mentholated flavor cigarettes built with metallized foils. It has been found that less than full non-mentholated flavor cigarettes built with metallized foils are preferred more than twice non-foiled non-mentholated control cigarettes at essentially equivalent tar delivery. Specifically, a panel of twenty-eight non-menthol smokers evaluated two packs of each prototype and completed a questioner about their preference and perceived characteristics of the cigarettes. Preference was observed for metallized prototype which demonstrated statistical superiority in overall satisfaction and liking of overall taste, strength of taste, strength of tobacco taste, and smoothness. Strong directional superiority was observed in liking of aftertaste and draw.
  • the metallized prototype cigarette was statistically superior to the control in similarity to the usual brand smoked by the panel with both products perceived as better than the usual brand.
  • the test product was so different from the control and liked significantly more by the panelists that when they smoked the control, it was rated much lower across most of the liking scores in comparison to previous tests.
  • FIG. 9 shows the preference results.
  • the embodiment of the present invention was a cigarette having 9.2 mg of tar, 0.76 mg of Nicotine, and 12 mg CO per cigarette.
  • the methods described herein may also be applied to less than full mentholated flavor cigarettes built with metallized foils. It has been found that these cigarettes are preferred more than three times the non-foiled control mentholated cigarettes.
  • the panel in this experiment consisted of thirty menthol 80 mm cigarette smokers who evaluated 2 packs of each prototype and completed a similar questioner as the one described above. Statistical analysis of the questioners shows a significant preference difference between this invented prototype and the control. This difference is reflected in the overall satisfaction scores.
  • the prototype showed significantly greater liking in “strength of taste” with strong directional superiority in liking of “overall taste”; it was found smoother and “closer to just about right” in “strength of taste”, “strength of tobacco taste”, and “draw.”
  • FIG. 10 shows the preference results.
  • the embodiment of the present invention in this study was characterized as having 9.5 mg of tar, 0.76 mg of Nicotine, and 12 mg CO per cigarette.
  • an additional benefit is derived from the ability to reduce the overall tar delivery from a smoking article equipped with the invention described herein and achieve taste parity to a higher tar delivered from a cigarette not equipped with the invention described herein.
  • the invention described herein has particular relevance in the ability to maintain the taste characteristics of a full flavor cigarette in a less than full flavor cigarette. As shown in FIG. 11 , laboratory results measuring the delivery of specific non-desirable gas phase components of the cigarette smoke demonstrate that the embodiments of the present invention do not affect the overall delivery of such non-desirable gas phase components.
  • Tables III and IV illustrate the ability to achieve taste parity or better between a mentholated cigarette comprising aspects of the invention described herein and a mentholated full flavor cigarette not equipped with aspects of the invention described herein.
  • a panel of 29 menthol 100 mm cigarette smokers evaluated two packs of each prototype and completed a questionnaire about the sensory differences between a 15.4 mg/cigarette control and a 10.7 mg/cigarette comprising principles of the present invention.
  • An analysis of variance (ANOVA) was carried out on the returned questionnaire using a sequential monadic randomized block—2 packs per product—home use.
  • ANOVA analysis of variance
  • Control A Control B Invented cigarette cigarette cigarette cigarette 15.4 mg tar/ 10.0 mg tar/ 10.7 mg tar Attributes cigarette cigarette cigarette Is robust and full-bodied Yes Yes Yes Yes Has premium tobacco taste Yes Yes Is soothing and easy to smoke Yes Yes Smokes great all day Yes Yes Yes Has the fullest possible flavor Yes Yes Is refreshing Yes Helps me enjoy life Yes Is mild and flavorful Yes Yes Has pleasant menthol taste Yes Has right balance of menthol Yes Yes and tobacco taste Tastes like a high quality Yes Yes Yes brand
  • Table V illustrates the ability to achieve taste parity or better between a mentholated silver class cigarette comprising aspects of the invention described herein and a mentholated gold class cigarette not equipped with aspects of the invention described herein.
  • a panel of 60 consumers evaluated two packs of each sample and completed a questionnaire about the sensory differences between a 14 mg/cigarette control and an 8 mg/cigarette comprising principles of the present invention.
  • ANOVA analysis was carried out on the returned questionnaire using a sequential monadic randomized block—2 packs per product—home use. As shown in Table V, smokers' opinions of the cigarette implementation aspects of the present invention were high.
  • table VI illustrates the ability to achieve taste parity or better between a nonmentholated Gold class cigarette comprising aspects of the invention described herein and a non-mentholated Gold class cigarette not equipped with aspects of the invention described herein.
  • a panel of 28 Gold class non-menthol smokers evaluated two packs of each sample and completed a questionnaire about the sensory differences between the cigarette comprising aspects of the present invention and a control at the same tar level.
  • ANOVA analysis was carried out on the returned questionnaire using a sequential monadic randomized block—2 packs per product—home use.
  • Kp was determined according to equation (1) based on Cp and Cg values measured using the method shown in FIG. 12A and a gas and particulate phase component (GPPC) measuring apparatus 1250 shown in FIG. 12B .
  • the GPPC measuring apparatus 1250 comprises a holder 1222 and smoking and measuring machine 1228 .
  • the smoking and measuring machine 1228 comprises a smoker machine 1204 (shown in FIG. 12A ) and a spectrometer (not shown) that may include a mass spectrometer 1206 (shown in FIG. 12A ) for measuring mass of gas and/or particulate phase components via spectrometry and a light spectrometer 1208 (shown in FIG. 12A ) for measuring, e.g., Tyndal Effect via light absorption spectroscopy.
  • a cigarette 1202 is smoked by the smoking machine 1204 in the GPPC measuring apparatus 1250 , and the resultant smoke stream may be substantially simultaneously sampled and measured by the smoking and measuring machine 1228 via mass spectrometry 1206 and light absorption spectroscopy 1208 .
  • the cigarette 1202 may be held in position by the holder 1222 , which may comprise a circular device containing three rubber diaphragms and a felt pad (not shown).
  • the smoke may be transferred through the holder 1222 into a light cell (not shown) in the light spectrometer 1208 where the smoke may interact with a light beam to produce a change in voltage associated with the smoke inside the light cell.
  • the smoking and measuring machine 1228 may comprise a Cambridge pad (not shown) positioned behind the light cell to collect particulate materials and prevent particulate materials from entering a gas sampling region (not shown).
  • the gas phase components pass through the filter pad and travel into a gas sampling block (not shown) which may contain a pressure monitor (not shown) and a transfer line (not shown) connected to the mass spectrometer 1206 .
  • the mass spectrometer 1206 may monitor a pre-selected mass (mass-to-charge (m/z)).
  • the saturation vapor pressure of the smoke produced during a smoking experience may be controlled by adding to the tobacco column/filter material ingredients that reduce or increase the vapor pressure such as glycols, fragrances, salts, amorphous/crystalline balance of solid fragrances, hydrophilic polymers, hydrogels, etc.
  • the average molecular weight of absorbing phases may be controlled by increasing or reducing the filter density and/or the filter material composition.

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  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
US13/894,774 2012-05-17 2013-05-15 Methods and articles to control the gas-particle partition of an aerosol to enhance its taste characteristics Abandoned US20130306085A1 (en)

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WO2019223412A1 (fr) * 2018-05-21 2019-11-28 湖南中烟工业有限责任公司 Bâtonnet filtre refroidissant, application et cigarette
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US10034988B2 (en) 2012-11-28 2018-07-31 Fontem Holdings I B.V. Methods and devices for compound delivery
US10667553B2 (en) * 2013-01-24 2020-06-02 Fontem Holdings 4 B.V. Method, composition and apparatus for functionalization of aerosols from non combustible smoking articles
US20150374035A1 (en) * 2013-01-24 2015-12-31 Loec, Inc. Method, composition and apparatus for functionalization of aerosols from non combustible smoking articles
US10194693B2 (en) 2013-09-20 2019-02-05 Fontem Holdings 1 B.V. Aerosol generating device
US20160331031A1 (en) * 2013-12-05 2016-11-17 Philip Morris Products S.A. Heated aerosol generating article with thermal spreading wrap
US10912330B2 (en) 2013-12-05 2021-02-09 Philip Morris Products S.A. Electrically operated aerosol generating system with thermal spreading wrap
US20160165950A1 (en) * 2014-12-12 2016-06-16 Lorillard Tobacco Company Reduction of carbon monoxide in mainstream cigarette smoke
US12225927B2 (en) 2015-03-31 2025-02-18 Nicoventures Trading Limited Cartridge, pouch and method of manufacture of pouch for use with apparatus for heating smokable material
US11723396B2 (en) 2015-03-31 2023-08-15 Nicoventures Trading Limited Cartridge, pouch and method of manufacture of pouch for use with apparatus for heating smokable material
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US20180338520A1 (en) * 2015-03-31 2018-11-29 British American Tobcco (Investments) Limited Apparatus for heating smokable material, article for use therewith and method of manufacture of article
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WO2019048361A1 (fr) * 2017-09-07 2019-03-14 Philip Morris Products S.A. Article de génération d'aérosol avec enveloppe extérieure améliorée
US11800891B2 (en) 2017-09-07 2023-10-31 Philip Morris Products S.A. Aerosol-generating article with improved outermost wrapper
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US20210153555A1 (en) * 2018-05-21 2021-05-27 Jt International S.A. Aerosol Generating Article, A Method For Manufacturing An Aerosol Generating Article And An Aerosol Generating System
US11957174B2 (en) * 2018-05-21 2024-04-16 Jt International S.A. Aerosol generating article, a method for manufacturing an aerosol generating article and an aerosol generating system
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US20220160023A1 (en) * 2019-08-08 2022-05-26 Kt&G Corporation Aerosol generating article including thermally conductive wrapper
US12342852B2 (en) 2020-07-23 2025-07-01 Kt&G Corporation Aerosol-generating article, cooling assembly for aerosol-generating articles, and air volume regulator
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