US20220295870A1 - Flavor containing sheet comprising modified cellulose and smoking article comprising the same - Google Patents

Flavor containing sheet comprising modified cellulose and smoking article comprising the same Download PDF

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Publication number
US20220295870A1
US20220295870A1 US17/431,358 US202117431358A US2022295870A1 US 20220295870 A1 US20220295870 A1 US 20220295870A1 US 202117431358 A US202117431358 A US 202117431358A US 2022295870 A1 US2022295870 A1 US 2022295870A1
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United States
Prior art keywords
fragrance
containing sheet
smoking article
cellulose
modified cellulose
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US17/431,358
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English (en)
Inventor
Ick Joong Kim
Kyung Bin JUNG
Eun Mi JEOUNG
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KT&G Corp
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KT&G Corp
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Assigned to KT&G CORPORATION reassignment KT&G CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: JEOUNG, EUN MI, JUNG, KYUNG BIN, KIM, Ick Joong
Publication of US20220295870A1 publication Critical patent/US20220295870A1/en
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    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B3/00—Preparing tobacco in the factory
    • A24B3/14—Forming reconstituted tobacco products, e.g. wrapper materials, sheets, imitation leaves, rods, cakes; Forms of such products
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
    • A24B15/10—Chemical features of tobacco products or tobacco substitutes
    • A24B15/12—Chemical features of tobacco products or tobacco substitutes of reconstituted tobacco
    • A24B15/14—Chemical features of tobacco products or tobacco substitutes of reconstituted tobacco made of tobacco and a binding agent not derived from tobacco
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
    • A24B15/10—Chemical features of tobacco products or tobacco substitutes
    • A24B15/16—Chemical features of tobacco products or tobacco substitutes of tobacco substitutes
    • A24B15/165—Chemical features of tobacco products or tobacco substitutes of tobacco substitutes comprising as heat source a carbon fuel or an oxidized or thermally degraded carbonaceous fuel, e.g. carbohydrates, cellulosic material
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
    • A24B15/10—Chemical features of tobacco products or tobacco substitutes
    • A24B15/16—Chemical features of tobacco products or tobacco substitutes of tobacco substitutes
    • A24B15/167—Chemical features of tobacco products or tobacco substitutes of tobacco substitutes in liquid or vaporisable form, e.g. liquid compositions for electronic cigarettes
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
    • A24B15/18—Treatment of tobacco products or tobacco substitutes
    • A24B15/28—Treatment of tobacco products or tobacco substitutes by chemical substances
    • 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
    • A24D1/00—Cigars; Cigarettes
    • A24D1/002—Cigars; Cigarettes with additives, e.g. for flavouring
    • 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
    • A24D1/00—Cigars; Cigarettes
    • A24D1/04—Cigars; Cigarettes with mouthpieces or filter-tips
    • A24D1/045—Cigars; Cigarettes with mouthpieces or filter-tips with smoke filter means
    • 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
    • A24D1/00—Cigars; Cigarettes
    • A24D1/18—Selection of materials, other than tobacco, suitable for smoking
    • 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
    • A24D1/00—Cigars; Cigarettes
    • A24D1/20—Cigarettes specially adapted for simulated smoking devices
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
    • D21H13/02—Synthetic cellulose fibres
    • D21H13/04—Cellulose ethers
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
    • D21H13/02—Synthetic cellulose fibres
    • D21H13/06—Cellulose esters
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H5/00—Special paper or cardboard not otherwise provided for
    • D21H5/12—Special paper or cardboard not otherwise provided for characterised by the use of special fibrous materials
    • D21H5/14—Special paper or cardboard not otherwise provided for characterised by the use of special fibrous materials of cellulose fibres only
    • D21H5/16—Tobacco or cigarette paper

Definitions

  • One or more embodiments of the present disclosure relate to a fragrance-containing sheet for smoking articles, and a smoking article including the same.
  • a method of adding a fragrance component in a solution state to a cigarette has been employed.
  • This method has an advantage in that the fragrance component may be easily applied to the cigarette by spraying a fragrance solution.
  • an amount of fragrance is increased to release more fragrance during smoking, an amount of solvent also has to increase, which often makes stains on the cigarette paper.
  • the fragrance is weakened as smoking progresses.
  • One or more embodiments of the present disclosure are provided to overcome the limitations of the existing technology described above.
  • Embodiments of the present disclosure are not limited thereto. It is to be appreciated that other embodiments will be apparent to those skilled in the art from a consideration of the specification or practice of the present disclosure described herein.
  • modified cellulose and fragrance may be dissolved in the slurry of the fragrance-containing sheet for smoking articles at room temperature. Therefore, when manufacturing the fragrance-containing sheet for smoking articles, a separate heating process for dissolution may not be included.
  • the fragrance-containing sheet for smoking articles may be easily manufactured without using a separate emulsifier.
  • the fragrance-containing sheet for smoking articles according to one or more embodiments of the present disclosure may be improved in at least one of viscosity characteristics, slurry formation characteristics, drying characteristics, sheet physical properties, and fragrance retention properties.
  • a smoking taste may be improved.
  • a fragrance is consistently generated during smoking, thereby increasing satisfaction of a consumer.
  • Embodiments of the present disclosure are not limited thereto. It is to be appreciated that other embodiments will be apparent to those skilled in the art from a consideration of the specification or practice of the present disclosure described herein.
  • FIG. 1 is a schematic diagram illustrating a configuration of a smoking article, according to an embodiment.
  • FIG. 2 is a schematic diagram illustrating a configuration of a smoking article, according to another embodiment.
  • FIG. 3A is a diagram illustrating a fragrance-containing sheet before being dried.
  • FIG. 3B is a diagram illustrating a fragrance-containing sheet after being dried.
  • FIG. 4 is a diagram illustrating a cross-section of a first portion of a smoking article.
  • FIG. 5 is a schematic diagram illustrating a configuration of a combustion-type cigarette.
  • a fragrance-containing sheet for smoking articles may include: moisture; modified cellulose; and fragrance.
  • a smoking article includes: a first portion including a tobacco material and a fragrance-containing sheet; and a second portion including a filter element, wherein the first portion and the second portion are arranged in series along a longitudinal direction of the smoking article, and the fragrance-containing sheet includes modified cellulose.
  • a combustion-type cigarette includes: a first segment including a tobacco material and a fragrance-containing sheet; and a second segment including a filter element, wherein the first segment and the second segment are arranged in series along a longitudinal direction of the combustion-type cigarette, and the fragrance-containing sheet includes modified cellulose.
  • a “smoking article” refers to an article used to smoke.
  • the smoking article may be a general combustion-type cigarette that is ignited and combusted, or the smoking article may be a heating-type cigarette that generates an aerosol when inserted in and heated by an aerosol generating device.
  • the smoking article may be an article used in a manner in which a liquid contained in a cartridge is heated.
  • tobacco element refers to an element including a tobacco material.
  • tobacco material refers to any type of material including components obtained from tobacco leaves.
  • cooling element refers to an element that cools a substance.
  • the cooling element may cool an aerosol generated from the tobacco element.
  • a “filter element” refers to an element including a filter material.
  • the filter element may include a plurality of fiber strands.
  • a “longitudinal direction of a smoking article” refers to a lengthwise direction of the smoking article or a direction in which the smoking article is inserted into the aerosol generating device.
  • thickening polysaccharide refers to a polysaccharide material that increases viscosity.
  • modified cellulose refers to cellulose in which a specific functional group is substituted within a molecular structure.
  • HPMC hydroxypropyl methyl cellulose
  • the modified cellulose may have a grade within a range of 4 to 40000, according to molecular weight and a degree of substitution by the hydroxypropyl group and methyl group (or methoxy group). Viscosity of the modified cellulose may be determined according to a grade.
  • HPMC physicochemical properties of HPMC are related to i) the proportion of the methoxy group, ii) the proportion of the hydroxypropyl group, and iii) the molecular weight.
  • types of HPMC may be classified into HPMC1828, HPMC2208, HPMC2906, and HPMC2910 according to the proportion of methoxy group and hydroxypropyl group.
  • the first two numbers refer to the proportion of the methoxy group
  • the rest two numbers refer to the proportion of the hydroxypropyl group.
  • FIG. 1 is a schematic diagram illustrating a configuration of a smoking article 100 , according to an embodiment.
  • the smoking article 100 may include a first portion 110 including a tobacco element, and a second element 120 including a filter element.
  • the first portion 110 and the second portion 120 may be arranged in series along a longitudinal direction of the smoking article 100 .
  • the longitudinal direction of the smoking article 100 may be a direction in which a length of the smoking article 100 extends.
  • the longitudinal direction of the smoking article 100 may be a direction in which the first portion 110 and the second portion 120 are arranged.
  • the first portion 110 may include the tobacco element.
  • the tobacco element may be a specific type of tobacco material.
  • the tobacco element may have the form of tobacco cut fillers, tobacco particles, tobacco sheets, tobacco beads, tobacco granules, or tobacco extracts.
  • the tobacco material may include, for example, one or more of tobacco leaves, tobacco side veins, puffed tobacco, cut fillers, leaf tobacco cut fillers, and reconstituted tobacco.
  • the second portion 120 may include a single segment of filter elements.
  • the filter element may be a cellulose acetate filter.
  • the filter element may be a cylindrical rod or a tubular rod including a hollow therein.
  • the filter element may be a recessed rod.
  • the second portion 120 may be manufactured to generate flavor.
  • a fragrance liquid may be sprayed onto the second portion 120 , or a separate fiber coated with the fragrance liquid may be inserted into the second portion 120 .
  • the second portion 120 may include at least one capsule 130 .
  • the capsule 130 may serve to generate flavor, or may serve to generate an aerosol.
  • the capsule 130 may have a structure in which a liquid containing fragrance is wrapped with a film.
  • the capsule 130 may have a spherical or cylindrical shape, but is not limited thereto.
  • the second portion 120 may also include a plurality of segments. The present embodiment will be described in greater detail with reference to FIG. 1 .
  • the second portion 120 may include a filter element 123 , and may further include a cooling element 121 .
  • the cooling element 121 may cool an airflow passing through the first portion 110 from the outside of the smoking article 100 .
  • the cooling element 121 may be formed of a paper material, and may be a cylindrical paper tube including a hollow therein.
  • the cooling element 121 may be made of a polymer material or a biodegradable polymer material, and may have a cooling function.
  • the cooling element 121 may be made of polylactic acid (PLA) fibers, but is not limited thereto.
  • the cooling element 121 may be made of a cellulose acetate filter having a plurality of holes.
  • the cooling element 121 is not necessarily limited to the above-described example, and embodiments of the present disclosure may include any material that performs a function of cooling the airflow.
  • the cooling element 121 may be a tube filter or a paper tube including a hollow therein.
  • the smoking article 100 may further include a plug (not shown).
  • the plug may be arranged at a distal end of the smoking article 100 .
  • the plug may be arranged at the distal end of the smoking article 100 adjacent to the first portion 110 .
  • the plug may serve to properly regulate an overall length of the smoking article 100 .
  • the plug may serve to regulate the first portion 110 to be arranged at an appropriate position within the aerosol generating device.
  • the smoking article 100 may include at least one wrapper 140 .
  • the smoking article 100 may include a first wrapper surrounding the first portion 110 , and a second wrapper surrounding the second portion 120 .
  • the smoking article 100 may also include a third wrapper surrounding the first portion 110 and the second portion 120 completely.
  • the smoking article 100 may also include a fourth wrapper surrounding the second portion 120 .
  • the fourth wrapper may, generally, serve as a tip paper.
  • At least one of the first to fourth wrappers may be a biodegradable wrapper.
  • a biodegradable wrapper When a biodegradable wrapper is used, the smoking article 100 may be rapidly decomposed by microorganisms, and thus environmental pollution may be reduced.
  • FIG. 2 is a schematic diagram illustrating a smoking article 200 , according to another embodiment.
  • the smoking article 200 may include a first portion 210 and a second portion 220 .
  • the second portion 220 may include a filter element. Descriptions given above with respect to the second portion 120 of FIG. 1 may be equally applied to the second portion 220 of FIG. 2 .
  • the first portion 210 may be divided into two compartments.
  • the first portion 210 may include an aerosol generating substrate 211 and a nicotine generating substrate 213 .
  • the aerosol generating substrate 211 may include, for example, crimped paper impregnated with an aerosol generating material.
  • the aerosol generating material (or aerosol former) may include, for example, at least one of glycerin, propylene glycol, ethylene glycol, dipropylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, and oleyl alcohol.
  • the nicotine generating substrate 213 may include, for example, tobacco cut fillers, tobacco particles, tobacco sheets, tobacco beads, or tobacco granules. As another example, the nicotine generating substrate 213 may include crimped paper impregnated with tobacco extracts. When the nicotine generating substrate 213 is heated, nicotine may be generated from the nicotine generating substrate 213 and be transferred to the second portion 220 .
  • the second portion 220 may include a plurality of segments.
  • the second portion 220 may include a filter element 223 , and may further include a cooling element 221 .
  • the fragrance-containing sheet for smoking articles may be included within the first portion 110 and 210 , or the second portion 120 and 220 of the smoking article 100 and 200 shown in FIGS. 1 and 2 .
  • a slurry (or crude liquid) including distilled water, alcohol, modified cellulose and fragrance may be used.
  • the slurry may further contain at least one of a bulking agent, an aerosol former, and an emulsifier.
  • the slurry may include about 1 wt % to about 80 wt % of alcohol. As such, the modified cellulose may be better dissolved.
  • distilled water and alcohol may be mixed in a weight ratio of about 1:1 to about 10:1 in the slurry.
  • distilled water and alcohol may be mixed in a weight ratio of about 2.33:1.
  • the modified cellulose may be better dissolved.
  • Distilled water may be a factor that determines viscosity of the slurry.
  • Alcohol may be utilized as a solvent.
  • the alcohol may be, for example, ethanol.
  • modified cellulose such as HPMC, methyl cellulose (MC), carboxymethyl cellulose (CMC), or ethyl cellulose (EC), and fragrance components such as L-menthol may be well dissolved in the slurry at room temperature.
  • the modified cellulose may be cellulose in which a specific functional group is substituted in a molecular structure.
  • the modified cellulose may be, for example, hydroxypropyl methyl cellulose (HPMC), methyl cellulose (MC), carboxymethyl cellulose (CMC), or ethyl cellulose (EC).
  • Hydroxypropyl methyl cellulose may have a grade within a range of about 4 to about 40000 depending on a degree of substitution by a hydroxypropyl group and a methyl group (or methoxy group). Viscosity of hydroxypropyl methyl cellulose may be determined depending on a grade.
  • the modified cellulose may be, for example, AN6, AN15, AN50, BN10, BN50, MC15, or MC50, which are product names of Lotte Fine Chemicals.
  • the fragrance-containing sheet for smoking articles may have a viscosity in a range of about 100 cp to about 10,000 cp when preparing the slurry.
  • the fragrance may include, for example, menthol, leaf tobacco extracts, natural botanical fragrance (e.g., cinnamon, sage, herbs, chamomile, reeds, persimmon tea, cloves, lavender, cardamom, cloves, nutmeg, bergamot, geranium, honey essence, rose oil, lemon, orange, cinnamon, caraway, jasmine, ginger, coriander, vanilla extract, spearmint, peppermint, cassia, coffee, celery, cascarilla, sandalwood, cocoa, ylang-ylang, fennel, anise, licorice, St.
  • natural botanical fragrance e.g., cinnamon, sage, herbs, chamomile, reeds, persimmon tea, cloves, lavender, cardamom, cloves, nutmeg, bergamot, geranium, honey essence, rose oil, lemon, orange, cinnamon, caraway, jasmine, ginger, coriander, vanilla extract, spearmint,
  • John's bread, plum extract, peach extract, etc. sugars (e.g., glucose, fructose, isomer sugar, caramel, etc.), cocoa (powder, extract, etc.), esters (e.g., isoamyl acetate, linalyl acetate, isoamyl propionate, linalyl butyrate, etc.), ketones (e.g., menthone, ionone, damasenone, ethyl maltol, etc.), alcohol classes (e.g., geraniol, linalol, anetol, eugenol, etc.), aldehydes (e.g., vanillin, benzaldehyde, anisaldehyde, etc.), lactones (e.g., ⁇ -undecalactone), ⁇ -nonalactone, etc.), animal flavors (e.g., musk, amber lys, civet, cast
  • the fragrance may be used in a solid state, or may be dissolved or dispersed in an appropriate solvent such as propylene glycol, ethyl alcohol, benzyl alcohol, or triethyl citrate.
  • an appropriate solvent such as propylene glycol, ethyl alcohol, benzyl alcohol, or triethyl citrate.
  • fragrances that are easily dispersed in a solvent by the addition of an emulsifier for example, hydrophobic fragrances, oil soluble fragrances, and the like may be used. These fragrances may be used alone or as a mixture.
  • embodiments of the present disclosure are not necessarily limited thereto, and embodiments of the present disclosure may include any fragrances used in the smoking article.
  • the bulking agent serves to increase a total mass (i.e., dry matter mass) of constituents other than the water in the raw material slurry, thereby increasing a volume of the fragrance-containing sheet to be produced.
  • the bulking agent only serves to increase the volume of the fragrance-containing sheet and does not affect an original function of the fragrance-containing sheet. More specifically, the bulking agent does not substantially increase the viscosity of the raw material slurry, and does not adversely affect a fragrance retention function of the fragrance-containing sheet.
  • the bulking agent may be starch or starch hydrolyzate.
  • the starch hydrolyzate refers to a substance obtained by a process of hydrolyzing starch.
  • the starch hydrolyzate is, for example, a substance obtained by directly hydrolyzing starch (i.e., dextrin), or a substance obtained by hydrolyzing starch after heat treatment (i.e., indigestible dextrin).
  • the bulking agent may be, for example, dextrin, and more specifically, cyclodextrin.
  • the starch hydrolyzate may, generally, be a starch hydrolyzate having a dextrose equivalent (DE) value within a range of about 2 to about 40, and preferably a starch hydrolyzate having a DE value within a range of about 2 to about 20.
  • DE dextrose equivalent
  • the DE value may represent a degree of hydrolysis of starch, that is, a saccharification rate of starch.
  • the DE value may be measured by a Willstatter-Schudel method.
  • the DE value is measured, as a specific value, by the Willstatter-Schudel method.
  • Properties of the hydrolyzed starch i.e., starch hydrolyzate
  • a molecular weight of the starch hydrolyzate or an arrangement of sugar molecules constituting the starch hydrolyzate are not identical among the molecules of the starch hydrolyzate, and may differ according to a certain distribution or variations.
  • the starch hydrolyzate exhibits different physical properties (for example, DE value) for each molecule due to the distribution and variations of the properties of the starch hydrolyzate, a difference in the cut section, or the like.
  • DE value physical properties
  • the starch hydrolyzate is a set of molecules representing different physical properties, but a result (i.e., DE value) measured by the Willstatter-Schudel method is regarded as a representative value indicating a degree of hydrolysis of starch.
  • the starch hydrolyzate may be selected from the group consisting of dextrin having a DE value of about 2 to about 5, indigestible dextrin having a DE value of about 10 to about 15, and a mixture thereof.
  • dextrin having a DE value of about 2 to about 5 for example, Finedex #100 (Masutani Chemical Industries Co., Ltd.) may be used.
  • indigestible dextrin having a DE value of about 10 to about 15 for example, fine fiber (Matsutani Chemical Co., Ltd.) may be used.
  • the fragrance-containing sheet may contain, based on a total of 100 parts by weight, about 2 parts to about 15 parts by weight of moisture, about 25 parts to about 90 parts by weight of modified cellulose, and about 0.1 parts to about 60 parts by weight of fragrance.
  • the slurry may further contain at least one of a bulking agent, an aerosol former, and an emulsifier.
  • a bulking agent may be, for example, dextrin
  • the aerosol former may be, for example, at least one of glycerin and propylene glycol
  • the emulsifier may be, for example, lecithin.
  • FIG. 3A is a diagram illustrating a fragrance-containing sheet 300 before being dried
  • FIG. 3B is a diagram illustrating a fragrance-containing sheet 400 after being dried.
  • the fragrance-containing sheet 300 before being dried may have a thickness d 1 .
  • the fragrance-containing sheet 400 after being dried may have a thickness d 2 .
  • the thickness d 1 of the fragrance-containing sheet 300 before being dried may be greater than the thickness d 2 of the fragrance-containing sheet 400 after being dried.
  • the fragrance-containing sheet 300 before being dried may have a thickness of about 0.2 mm to about 2.0 mm, and the fragrance-containing sheet 400 after being dried may have a thickness of about 0.01 mm to about 0.3 mm.
  • the above-described difference in thickness may be derived from a difference in moisture content due to drying.
  • FIG. 4 is diagram illustrating a cross-section of a first portion 500 of a smoking article, according to an embodiment.
  • FIG. 4 may be a cross-sectional view of the first portion of the smoking article of FIG. 1 .
  • the first portion 500 may include a tobacco material 511 and a fragrance-containing sheet 513 .
  • the tobacco material 511 may be, for example, in the form of a tobacco sheet such as leaf tobacco cut fillers. Alternatively, the tobacco material 511 may be a tobacco sheet impregnated with an aerosol generating material or the like.
  • an aerosol may be generated from the tobacco material 511 , and a fragrance component volatilized from the fragrance-containing sheet 513 may move along with the aerosol.
  • the manufacturing process may include the following operations: (1) heating water to about 80° C. to about 100° C.; (2) adding and dissolving agar, gelatin, or gellan gum; (3) cooling down to about 60° C.; and (4) adding a fragrance component such as menthol and the like.
  • the slurry is required to be maintained at about 60° C. in a storage tank, a transfer line, an application nozzle, and the like.
  • fragrance components such as menthol are not soluble in water, there is a need to use an emulsifier.
  • the slurry of the fragrance-containing sheet for smoking articles may include modified cellulose (e.g., HPMC, MC, CMC, or EC) having a grade within a specific numerical range.
  • the slurry of the fragrance-containing sheet for smoking articles may contain, for example, distilled water, ethanol, dextrin, glycerin, and menthol.
  • dextrin and glycerin may be dissolved in distilled water at room temperature
  • the menthol and modified cellulose e.g., HPMC, MC, CMC, or EC
  • the slurry of the fragrance-containing sheet for smoking articles according to one or more embodiments of the present disclosure includes a relatively small amount of distilled water and at least a certain amount of alcohol. As such, there is an advantage in that drying time is relatively short.
  • the manufacturing process may include the following operations: (1) dissolving menthol in ethanol, and adding and dispersing modified cellulose (e.g., HPMC, MC, CMC, or EC); (2) adding distilled water; and (3) adding a fragrance component.
  • modified cellulose e.g., HPMC, MC, CMC, or EC
  • adding distilled water e.g., distilled water
  • adding a fragrance component e.g., a process of separately heating the slurry is not required, and accordingly there is no need to maintain the temperature in the storage tank, the transfer line, the application nozzle, and the like.
  • the slurry need not necessarily contain an emulsifier.
  • Table 1 below shows a content proportion of each component of the fragrance-containing sheet for smoking articles according to an embodiment. Ethanol was all evaporated while the slurry was dried.
  • Modified cellulose e.g., HPMC, MC, CMC, or Propylene EC
  • Menthol Moisture glycol Sum Content 52.6 29.8 7.0 10.5 100 (wt %)
  • FIG. 5 is a schematic diagram illustrating a configuration of a combustion-type cigarette 600 .
  • the combustion-type cigarette 600 includes: a first segment 610 including a tobacco material and a fragrance-containing sheet; and a second segment 620 including a filter element.
  • the first segment 610 and the second segment 620 are arranged in series along a longitudinal direction of the combustion-type cigarette 600 , and the fragrance-containing sheet includes modified cellulose.
  • the first segment 610 may be ignited by a user. As the first segment 610 is ignited, fragrance generated from the fragrance-containing sheet may flow into the second segment 620 along with cigarette smoke.
  • fragrance-containing sheet for smoking articles and the smoking article may be equally applied to the combustion-type cigarette 600 according to another aspect of the present disclosure.
US17/431,358 2020-08-25 2021-04-21 Flavor containing sheet comprising modified cellulose and smoking article comprising the same Pending US20220295870A1 (en)

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PCT/KR2021/005018 WO2022045518A1 (en) 2020-08-25 2021-04-21 Flavor containing sheet comprising modified cellulose and smoking article comprising the same

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KR20220026430A (ko) 2022-03-04
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