EP3832013A1 - Papier à rouler pour article à fumer chauffé sans combustion, article à fumer chauffé sans combustion et système à fumer à chauffage électrique - Google Patents

Papier à rouler pour article à fumer chauffé sans combustion, article à fumer chauffé sans combustion et système à fumer à chauffage électrique Download PDF

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Publication number
EP3832013A1
EP3832013A1 EP18928607.3A EP18928607A EP3832013A1 EP 3832013 A1 EP3832013 A1 EP 3832013A1 EP 18928607 A EP18928607 A EP 18928607A EP 3832013 A1 EP3832013 A1 EP 3832013A1
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EP
European Patent Office
Prior art keywords
wrapping paper
heating
paper
smoking article
type smoking
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP18928607.3A
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German (de)
English (en)
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EP3832013A4 (fr
Inventor
Toru Sakurai
Noriko OSAWA
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Japan Tobacco Inc
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Japan Tobacco Inc
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Filing date
Publication date
Application filed by Japan Tobacco Inc filed Critical Japan Tobacco Inc
Publication of EP3832013A1 publication Critical patent/EP3832013A1/fr
Publication of EP3832013A4 publication Critical patent/EP3832013A4/fr
Pending 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
    • A24D1/00—Cigars; Cigarettes
    • A24D1/20—Cigarettes specially adapted for simulated smoking devices
    • 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
    • A24D1/02—Cigars; Cigarettes with special covers
    • 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
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/63—Inorganic compounds
    • D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
    • D21H17/675—Oxides, hydroxides or carbonates
    • 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
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes

Definitions

  • the present invention relates to a wrapping paper for a non-combustion heating-type smoking article, a non-combustion heating-type smoking article, and an electric heating-type smoking system.
  • Non-combustion heating-type smoking articles of a type in which heating is performed from around a tobacco rod including shredded tobacco to deliver volatile components to a user are known.
  • a tobacco rod wrapped by a wrapping paper is heated, but the tobacco rod is left unburned after use (after heating) unlike conventional cigarettes.
  • white (colorless) paper while having a logo or the like in some cases, is commonly used as a wrapping paper for wrapping shredded tobacco.
  • the present inventors focused on the fact that using a wrapping paper having a white part that has a specific brightness before heating and will have a discolored region in a specific range after heating makes the unpleasant discoloration less noticeable.
  • Paper made mostly from pulp will be scorched and discolored brown if heated at or above a certain temperature. Such discoloration cannot be easily prevented because it is caused for a physical reason due to thermal decomposition of pulp and components of the paper.
  • the present inventors have found that discoloration, if caused by scorching, can be made less easily recognizable as an unpleasant scorch color if the degree of discoloration from the color of the original paper is low in a certain range.
  • the present inventors have discovered that such a region where the color difference is at a visually acceptable level can be expressed by a mathematical formula, and found that by using, as a wrapping paper, a paper having a white part that exhibits a specific numerical value when values of L*, a*, and b* before and after heating are substituted into the mathematical formula and that has a specific brightness before heating, the problem of unpleasant discoloration peculiar to non-combustion heating-type smoking articles can be solved.
  • the present inventors have found that the problem of unpleasant discoloration described above can be solved by using a paper having a white part which has an ISO brightness before heating of 83% or more and where the color difference before and after heating is small.
  • the problem to be solved by the present invention is peculiar to non-combustion heating-type smoking articles heated with electric heating-type devices, and is a problem that has not arisen in conventional smoking articles (e.g., cigarettes).
  • a wrapping paper for a non-combustion heating-type smoking article which wrapping paper does not cause appearance-related unpleasantness that may be caused by heating, can be provided.
  • a wrapping paper for a non-combustion heating-type smoking article refers to a wrapping paper used for a non-combustion heating-type smoking article described below. Hereinafter, it is also referred to simply as a wrapping paper according to an embodiment of the present invention.
  • "for a non-combustion heating-type smoking article” means being used to produce a tobacco rod by wrapping around a filler containing shredded tobacco or being used to wrap around the outer circumferences of a tobacco rod and a member adjacent thereto in order to join them together.
  • the wrapping paper according to an embodiment of the present invention has a white part having a value of y (discriminant score) of smaller than 0.62 and an ISO brightness of 83% or more, the value of y being obtained by measuring L*, a*, and b* before and after heating at 230°C for 3 minutes (also referred to simply as before and after heating), and substituting differences of each value between before and after heating (values obtained by subtracting the values before heating from the values after heating), the differences being expressed as ⁇ L*, ⁇ a*, and ⁇ b*, into the following formula (1).
  • y discriminant score ⁇ 0.18 ⁇ ⁇ L ⁇ + 0.08 ⁇ ⁇ a ⁇ + 0.13 ⁇ ⁇ b ⁇ ⁇ 2.36
  • the wrapping paper according to an embodiment of the present invention has a white part having a discriminant score, as determined by substituting values of ⁇ L*, ⁇ a*, and ⁇ b* into the above formula (1), of smaller than 0.62, values of L*, a*, and b* before heating are not particularly limited.
  • the white part having the above discriminant score may be present throughout the wrapping paper according to an embodiment of the present invention, or may be present at least at a portion subjected to heating (heating with an electric heating-type device described later).
  • the ISO brightness can be determined by the following method.
  • the ISO brightness is measured using a brightness and opacity meter (manufacturer: MURAKAMI COLOR RESEARCH LABORATORY, model number: WMS-1) in accordance with JIS 8148: 2001, Paper, board and pulps-Measurement of diffuse blue reflectance factor (ISO brightness).
  • the above white part when having a high pre-heating L* value (when being bright and having a light color), tends to have an ISO brightness of 83% or more.
  • the pre-heating L* value of the white part may be 95% or more.
  • the values of L*, a*, and b* before and after heating are each a simple average of values measured at five points in a white part of a sample paper.
  • the measurement is performed at randomly selected points in the white part of the paper, but when the paper has a letter or design such as a logo, the measurement is performed at points in the white part where such a letter or logo is not present.
  • the values of L*, a*, and b* can be measured by using a spectrophotometer.
  • a spectrophotometer manufactured by X-Rite Inc., product name: SpectroEye
  • the measurement is performed under the conditions of a D65 light source, no light source filter, and a viewing angle of 2°, with a sample placed on a paper having an ISO brightness of 92%, and a measurement unit of the spectrophotometer held against the sample.
  • a paper including a white that has a discriminant score, as determined by the above formula (1), of smaller than 0.62 and an ISO brightness of 83% or more (also referred to as a paper having the above-described characteristics)
  • any known method can be used.
  • such a wrapping paper can be produced by controlling the type and content of pulp and loading material at the stage of paper manufacturing. Specifically, for example, the content of a loading material described later is increased, or the amount of colored material is decreased as much as possible.
  • a colored part that exhibits a desired hue may be provided, for example, by printing.
  • Example s of the method of printing include, but are not limited to, gravure printing and offset printing.
  • the colored part refers to a part having an ISO brightness of less than 83%.
  • the printed surface is not used as a target for spectrophotometric colorimetry.
  • the area fraction of the colored part is, for example, 10% or less, preferably 5% or less, more preferably 3% or less.
  • the area fraction of the white part described above is, for example, 90% or more, preferably 95% or more, more preferably 97% or more.
  • the area fraction of the white part may be 50% or more in some cases.
  • At least a portion to be heated (portion subjected to heating with an electric heating-type device) preferably has a discriminant score, as determined by the above formula (1), of smaller than 0.62 and an ISO brightness of 83% or more.
  • a discriminant score as determined by the above formula (1), of smaller than 0.62 and an ISO brightness of 83% or more.
  • the basis weight of a base paper of the wrapping paper is, for example, typically 20 gsm or more, preferably 25 gsm or more.
  • the basis weight is typically 65 gsm or less, preferably 50 gsm or less, still more preferably 45 gsm or less. The relationship between the basis weight and the loading material content will be described later.
  • the thickness of the wrapping paper having the above-described characteristics is not particularly limited, and in view of rigidity, air permeability, and ease of adjustment in paper manufacturing, the thickness is typically 10 ⁇ m or more, preferably 20 ⁇ m or more, more preferably 30 ⁇ m or more, and typically 100 ⁇ m or less, preferably 75 ⁇ m or less, more preferably 50 ⁇ m or less.
  • the shape of the wrapping paper for a non-combustion heating-type smoking article may be, for example, square or rectangular.
  • the length of one side may be, for example, about 15 to 70 mm, and the length of the other side may be 15 to 26.5 mm, preferably 24 mm
  • the length of one side may be 20 to 60 mm, and the length of the other side may be 15 to 26.5 mm
  • Examples of the wrapping paper having the above-described characteristics include those composed mainly of pulp.
  • the pulp may be made of wood pulp such as softwood pulp or hardwood pulp, or may be produced by mixing nonwood pulp commonly used for a wrapping paper for a smoking article, such as flax pulp, cannabis pulp, sisal pulp, and esparto.
  • Examples of types of pulp that can be used include chemical pulp, ground pulp, chemiground pulp, and thermomechanical pulp produced, for example, by kraft cooking, acidic ⁇ neutral ⁇ alkaline sulfite cooking, or soda chlorine cooking.
  • the texture is arranged to be uniform in a papermaking process using a Fourdrinier paper machine, a cylinder paper machine, a cylinder-tanmo complex paper machine, or the like, thereby producing the wrapping paper.
  • the above-described wet paper-strengthening agent may be added to impart water resistance to the wrapping paper, or a sizing agent may be added to adjust the state of printing on the wrapping paper.
  • additives for papermaking such as aluminum sulfate, various anionic, cationic, nonionic, or amphoteric yield enhancers, freeness improvers, and paper-strengthening agents, and additives for paper manufacturing such as dyes, pH adjusters, antifoaming agented, pitch control agents, and slime control agents may be added.
  • the wrapping paper according to an embodiment of the present invention contains a loading material.
  • the loading material content based on the total weight of the wrapping paper according to an embodiment of the present invention may be, for example, 10 wt% or more and less than 60 wt%, and is preferably 15 to 45 wt%.
  • the loading material content is preferably 15 to 45 wt% in the preferred basis weight range (25 to 45 gsm).
  • the loading material content is preferably 15 to 45 wt%, and when the basis weight is more than 35 gsm and 45 gsm or less, the loading material content is preferably 25 to 45 wt%.
  • calcium carbonate titanium dioxide, kaolin, or the like can be used, and in terms of, for example, improvements in smoke taste and brightness, calcium carbonate is preferably used.
  • a paper containing such a loading material typically exhibits a white-based bright color and can permanently maintain whiteness.
  • the ISO brightness of the wrapping paper can be 83% or more.
  • the wrapping paper according to an embodiment of the present invention preferably has a tensile strength, as measured by the following measurement method, of at least 8 N/15 mm, from the practical viewpoint of use as a wrapping paper of a non-combustion heating-type smoking article.
  • This tensile strength can be increased by decreasing the loading material content. Specifically, the tensile strength can be increased by decreasing the loading material content to be lower than the above-described upper limit of the loading material content in each basis weight range.
  • the tensile strength is measured using a STROGRAPH E-L manufactured by Toyo Seiki Seisaku-Sho, Ltd. in accordance with P 8113: 2006 (ISO 1924-2: 1994), Paper and board-Determination of tensile properties-Part 2: Constant rate of elongation method.
  • the wrapping paper according to an embodiment of the present invention preferably has an opacity, as measured by the following measurement method, of 60% or more.
  • the opacity can be increased by increasing the loading material content in the wrapping paper. Specifically, the opacity can be increased by increasing the loading material content to be higher than the above-described lower limit of the loading material content in each basis weight range.
  • the opacity is a value measured in accordance with ISO 2471 using a brightness and opacity meter (manufacturer: MURAKAMI COLOR RESEARCH LABORATORY, model number: WMS-1).
  • the opacity is a value calculated by a formula: single-sheet luminous reflectance factor (R0)/intrinsic luminous reflectance factor (R ⁇ ) ⁇ 100 (%).
  • the intrinsic luminous reflectance factor (R ⁇ ) in this formula is an intrinsic reflectance factor of brightness as measured using a prescribed reflectometer and light source under spectral conditions at an effective wavelength of 457 nm and a half-width of 44 nm.
  • the wrapping paper according to an embodiment of the present invention preferably does not contain a combustion improver, which is included in conventional wrapping papers for tobacco rods.
  • the wrapping paper according to an embodiment of the present invention may be used as a first wrapping paper or a second wrapping paper used for a non-combustion heating-type smoking article described below.
  • a non-combustion heating-type smoking article according to an embodiment of the present invention may have, for example, a configuration illustrated in Fig. 1 .
  • a non-combustion heating-type smoking article 10 in Fig. 1 includes a filler 11, a tobacco rod portion formed of a first wrapping paper 12 wrapping around the filler 11, and a mouthpiece portion 16 constituting an end portion opposite to the tobacco rod portion.
  • the tobacco rod portion and the mouthpiece portion are joined together with a second wrapping paper 13 (tipping paper in Fig. 1 ) that is the same as or different from the wrapping paper wrapping around the filler.
  • the first wrapping paper and the second wrapping paper will not be burned down by heating if they are each composed of a single sheet alone. When the first wrapping paper and the second wrapping paper are each composed of a single sheet alone, the cost can be reduced.
  • At least one of the first wrapping paper and the second wrapping paper is the wrapping paper according to an embodiment of the present invention described above. It is preferred that at least the first wrapping paper be the wrapping paper according to an embodiment of the present invention. It is also preferred that both the first wrapping paper 12 and the second wrapping paper be the wrapping paper according to an embodiment of the present invention described above.
  • the mouthpiece portion 16 includes a paper tube portion 14 and a filter portion 15.
  • the tipping paper 13 serves as the second wrapping paper for joining them together.
  • the mouthpiece portion 16 is composed of two segments in Fig. 1
  • the mouthpiece portion 16 may be composed of a single segment or three or more segments. Each segment constituting the mouthpiece portion may be configured so as to include both the paper tube portion and the filter portion or may be composed of only one of them.
  • Fig. 2 shows an embodiment in which the mouthpiece portion 16 is composed of three segments.
  • the embodiment of Fig. 2 includes a hollow segment portion 17 disposed between the paper tube portion 14 and the filter portion 15 in Fig. 1 .
  • the hollow segment portion 17 is composed of a packed bed having one or more hollow channels and a plug wrapper covering the packed bed.
  • the packed bed can be, for example, a rod having an inner diameter ⁇ of 4.5 to 1.0 mm, the rod being densely packed with cellulose acetate fibers and cured with a plasticizer containing triacetin added in an amount of 6 to 20 wt% based on the weight of cellulose acetate.
  • the packed bed has a high fiber packing density, air and aerosols flow only through the channel portion and hardly flow through the packed bed during suction.
  • shortening the length of the filter portion 15 and substituting the hollow segment portion 17 is effective in increasing the amount of delivered aerosol components.
  • the packed bed inside the hollow segment portion 17 is a fiber packed bed, the feel from outside during use is closer to the feel at the filter portion than to the feel at the paper tube portion 14, and thus users are less likely to experience a feeling of strangeness.
  • the longitudinal length of the non-combustion heating-type smoking article 10 is preferably 40 mm to 90 mm, more preferably 50 mm to 75 mm, still more preferably 50 mm to 60 mm
  • the circumference of the non-combustion heating-type smoking article is preferably 15 mm to 25 mm, more preferably 17 mm to 24 mm, still more preferably 20 mm to 22 mm
  • the longitudinal length of the non-combustion heating-type smoking article 10 is preferably 40 mm to 90 mm, more preferably 50 mm to 75 mm, still more preferably 50 mm to 60 mm
  • the circumference of the non-combustion heating-type smoking article is preferably 15 mm to 25 mm, more preferably 17 mm to 24 mm, still more preferably 20 mm to 22 mm
  • the length of the tobacco rod portion may be 20 mm
  • the length of the paper tube portion may be 20 mm
  • the length of the hollow segment portion may be 8 mm
  • the length of the filter portion may be 7 mm, but these segment lengths can each be changed as appropriate according to, for example, production suitability and required quality.
  • the non-combustion heating-type smoking article 10 may have perforations (not illustrated) for taking in outside air in the paper tube portion 14 and part of the second wrapping paper 13 (tipping paper) that surrounds the paper tube portion 14.
  • perforations allow air to flow from outside into the paper tube portion 14 during use, and as a result, a vapor generated upon heating of the tobacco rod and containing an aerosol-source material and a tobacco flavor component comes into contact with the air from outside to be cooled and liquefied, thus further ensuring the generation of an aerosol.
  • the paper tube portion 14 may be, for example, a thick paper processed into cylindrical form.
  • the filter portion 15 may be made, for example, by using acetate tow as a material.
  • the single yarn fineness and the total fineness of the acetate tow are not particularly limited.
  • the filter portion 15 is composed of a single segment in Fig. 1 , it may be composed of a plurality of segments.
  • a configuration may be employed in which a hollow segment is disposed on the upstream side and a segment on the downstream side (user's suction end side) has a suction section filled with acetate tow.
  • Such a configuration can prevent unwanted loss of a generated aerosol and can also improve the appearance of the non-combustion heating-type smoking article.
  • additives e.g., known absorbents, flavors, and flavor retention materials
  • the material of the second wrapping paper 13 is not particularly limited, and the wrapping paper according to an embodiment of the present invention may be used for a part or the whole.
  • the second wrapping paper 13 may be fixed, for example, using a vinyl acetate adhesive after wrapping around the tobacco rod, the paper tube portion 14, and the filter portion 15 described above.
  • the tobacco rod contains shredded tobacco as the filler 11.
  • the material of the shredded tobacco is not particularly limited, and a known material such as a lamina or a midrib can be used.
  • the range of the filler content in the tobacco rod may be 200 to 400 mg/rod, and is preferably 250 to 320 mg/rod.
  • the water content of the filler may be 10 to 15 wt%, and is preferably 11 to 13 wt%. Such a water content suppresses the occurrence of a stain on the wrapping paper and improves the machinability during the production of the tobacco rod.
  • the shredded tobacco used as the filler may have any size and may be prepared by any method.
  • shredded tobacco obtained by shredding dried tobacco leaves to a width of 0.8 to 1.2 mm may be used.
  • shredded tobacco obtained by pulverizing and uniformizing dried tobacco leaves so as to have an average particle size of about 20 to 200 ⁇ m, processing the resultant into a sheet, and shredding the sheet to a width 0.8 to 1.2 mm may be used.
  • the above sheet may be subjected to gathering without being shredded and used as the filler.
  • the filler contains an aerosol-source material that generates aerosol smoke.
  • the type of the aerosol-source material is not particularly limited, and extracts from various natural products and/or components thereof can be selected depending on the intended use.
  • Examples of the aerosol-source material include glycerol, propylene glycol, triacetin, 1,3-butanediol, and mixtures thereof.
  • the content of the aerosol-source material in the filler is not particularly limited, and to sufficiently generate an aerosol and impart a good smoke taste, the content is typically 5 wt% or more, preferably 10 wt% or more, and typically 50 wt% or less, preferably 20 wt% or less.
  • the filler may contain a flavor.
  • the type of the flavor is not particularly limited, and to impart a good smoke taste, acetanisole, acetophenone, acetylpyrazine, 2-acetylthiazole, alfalfa extract, amyl alcohol, amyl butyrate, trans-anethole, star anise oil, apple juice, Peru balsam oil, beeswax absolute, benzaldehyde, benzoin resinoid, benzyl alcohol, benzyl benzoate, benzyl phenylacetate, benzyl propionate, 2,3-butanedione, 2-butanol, butyl butyrate, butyric acid, caramel, cardamom oil, carob absolute, ⁇ -carotene, carrot juice, L-carvone, ⁇ -caryophyllene, cassia bark oil, cedarwood oil, celery seed oil, chamomile oil, cinnamic al
  • the content of the flavor in the filler is not particularly limited. To impart a good smoke taste, the content is typically 10,000 ppm or more, preferably 20,000 ppm or more, more preferably 25,000 ppm or more, and typically 50,000 ppm or less, preferably 40,000 ppm or less, more preferably 33,000 ppm or less.
  • the filler density of the filler is not particularly limited. To secure the performance of the non-combustion heating-type smoking article and impart a good smoke taste, the filler density is typically 250 mg/cm 3 or more, preferably 320 mg/cm 3 or more, and typically 520 mg/cm 3 or less, preferably 420 mg/cm 3 or less.
  • the wrapping paper according to an embodiment of the present invention described above can be used. Specifically, a filler containing shredded tobacco and an aerosol-source material is formed, and the formed filler is wrapped using the wrapping paper according to an embodiment of the present invention, whereby a tobacco rod can be obtained. Furthermore, the tobacco rod and a member constituting a mouthpiece portion are wrapped with a tipping paper (or the wrapping paper according to an embodiment of the present invention), whereby a non-combustion heating-type smoking article can be obtained.
  • a known winding device can be used.
  • the wrapping paper according to an embodiment of the present invention as a wrapping paper for a tobacco rod and/or as a tipping paper in producing a non-combustion heating-type smoking article, a non-combustion heating-type smoking article whose appearance impression will not be impaired after use (after heating) can be provided.
  • the non-combustion heating-type smoking article 10 which is one embodiment of the present invention, includes a tobacco rod including the filler 11 and the wrapping paper 12 (the wrapping paper according to an embodiment of the present invention), the paper tube portion 14, the filter portion 15, and the second wrapping paper 13 for joining them together.
  • the non-combustion heating-type smoking article 10 may have perforations (not illustrated) for taking in outside air in the paper tube portion 14 and part of the second wrapping paper 13 that surrounds the paper tube portion 14.
  • FIG. 3 One aspect of an electric heating-type smoking system is illustrated in Fig. 3 .
  • An electric heating-type smoking system 30 is used in a manner that the non-combustion heating-type smoking article 10 described above is fitted so as to be in contact with a heat-transfer member 25 in contact with a heater 24 disposed inside an electric heating-type device 20.
  • the electric heating-type device 20 includes a battery unit 21 and a control unit 22 inside a body 23 made of, for example, a resin.
  • the non-combustion heating-type smoking article includes a filler 11, a tobacco rod portion formed of a first wrapping paper 12 wrapping around the filler 11, and a mouthpiece portion 16 constituting an end portion opposite to the tobacco rod portion.
  • the tobacco rod portion and the mouthpiece portion are joined together with a second wrapping paper that is the same as or different from the wrapping paper wrapping around the filler.
  • the mouthpiece portion 16 of the non-combustion heating-type smoking article may be composed of the paper tube portion 14 and the filter portion 15, as shown in Fig. 1 , or may include, between the paper tube portion 14 and the filter portion 15, a hollow segment including a packed bed 17, as shown in Fig. 2 .
  • the heater 24 inside the electric heating-type device 20 generates heat under the control of the control unit 22.
  • the heat is transferred through the heat-transfer member 25 to the tobacco rod of the non-combustion heating-type smoking article, and as a result, both the aerosol-source material and the flavor component contained in the filler 11 in the tobacco rod are volatilized.
  • the tobacco rod is heated to approximately 150°C to 250°C.
  • the temperature at which and the time for which the wrapping paper is heated are set to 230°C and 3 minutes, which is based on the assumption that the electric heating-type smoking system according to an embodiment of the present invention is used.
  • the vapor generated upon heating and containing the aerosol-source material and the flavor component is aerosolized inside the paper tube portion 14 by the above-described mechanism, and passes through the filter portion 15 of the non-combustion heating-type smoking article 10 to reach inside the oral cavity of a user.
  • Papers having various values of lightness L*, chromaticity a*, and chromaticity b* in the CIELab color system were provided.
  • colored papers for example, gravure printed papers, mixed papers of white standard pulp incorporated with unbleached pulp, and tobacco sheets incorporated with fine tobacco leaves were provided.
  • a muffle furnace (product name: Muffle Furnace FO410 model, manufactured by Yamato Scientific Co., Ltd.) was adjusted to 230°C in advance. A door was opened; a paper sample on home-use aluminum foil (material: aluminum foil, thickness: 11 ⁇ m) was placed in the muffle furnace; and the door was closed. This operation was performed quickly (within three seconds) to minimize the decrease of the temperature in the muffle furnace. Under the heating conditions in this example (preset muffle furnace temperature: 230°C, paper sample heating time: 3 minutes), the actual temperature of the paper reached about 230°C, which was the same as the preset muffle furnace temperature, in one minute at the latest after the door was closed. This was confirmed using a discoloration temperature test paper (THERMO LABEL 5E-170/THERMO LABEL 5E-210 (manufactured by NiGK Corporation)).
  • the hue of each sample before and after heating was measured using a spectrophotometer (manufactured by X-Rite Inc., product name: SpectroEye). The measurement was performed under the conditions of a D65 light source, no light source filter, and a viewing angle of 2°, with a sample placed on a paper having an ISO brightness of 92%, and a measurement unit of the spectrophotometer held against the sample.
  • a spectrophotometer manufactured by X-Rite Inc., product name: SpectroEye
  • L*, a*, and b* were the measurements without any correction, and ⁇ L*, ⁇ a*, and ⁇ b* were each determined by subtracting a value before discoloration by heating from a value after discoloration by heating.
  • the CIELab color system is a color system defined by CIE (International Commission on Illumination) and forms the basis of JIS Z 8781-4 and ISO 11664-4.
  • the CIELab color system is a convenient classification system that closely resembles the human sense, that is very commonly used, and that can convert a color tone into three-dimensional numerical values.
  • L* is an axis representing lightness
  • a* is an axis representing blue to yellow
  • Paper samples before and after heating were shown to 20 panelists one by one, and unsightliness they received from the color tone of the samples was inquired.
  • the appearance impression of the sample was evaluated as ⁇
  • the appearance impression of the sample was evaluated as ⁇ .
  • the results thereof were used for analysis.
  • Discriminant score y ⁇ 0.18 ⁇ ⁇ L ⁇ + 0.08 ⁇ ⁇ a ⁇ + 0.13 ⁇ ⁇ b ⁇ ⁇ 2.36 Discriminant score of 0.62 or more: ⁇ (bad) Discriminant score of less than 0.62: ⁇ (good)
  • Formula (1) means that the appearance impression after heating is almost determined by ⁇ L*, ⁇ a*, and ⁇ b*, which indicate a color difference between a paper sample before heating and a paper sample after heating. For example, as the value of ⁇ L* decreases and the values of ⁇ a* and ⁇ b* increases, the discriminant score increases, which means that the post-heating impression of the paper is located in a worse direction.
  • the discriminant analysis was performed using a 2-group discriminant analysis of multivariate analysis of Excel Statistics Ver. 2.15 available from BellCurve under the following conditions.
  • Fig. 6 shows, for more detailed explanation, the relationship between ⁇ a* and ⁇ b* of the paper samples investigated here.
  • Samples that gave bad appearance impressions in the evaluation are indicated by " ⁇ " and located at points where values of ⁇ a* and ⁇ b* are both large. This means that upon heating, the color has greatly changed toward red-violet, yellow, or a combination thereof, that is, brown, and many of these samples have relatively small ⁇ L* values. That is, these samples are samples that visually come closer to what is called a pale scorch color to a deep scorch color, and it can be intuitively understood that these samples give bad appearance impressions.
  • samples of " ⁇ " that gave good appearance impressions are located at points where values of ⁇ a* and ⁇ b* are both small. This means that upon heating, the color has greatly changed toward blue, green, or a combination thereof, that is, blue-green.
  • Some are evaluated as ⁇ despite having relatively low ⁇ L* values, that is, having low lightness and being dark.
  • Many of these samples in contrast to the samples of ⁇ , have relatively small L* values and large a* and b* values before heating, that is, are dark and have high saturation. Such a sample having a deep hue is less likely to undergo a noticeable change upon heating, which leads to a good appearance impression.
  • the degree of change in color of a paper before and after heating was focused, and its region was quantified to successfully define an effective range.
  • wrapping papers having compositions of Experimental Examples 1 to 18 shown in Table 2 below were further prepared.
  • the basis weight and the loading material content were varied as shown in Table 1.
  • (wood pulp) was used as pulp
  • calcium carbonate manufactured by Shiraishi Kogyo Kaisha, Ltd.
  • Papermaking was performed by hand using a method in accordance with JIS P-8222 "Pulps-Preparation of laboratory sheets for physical testing".
  • a standard wrapping paper for a cigarette was provided.
  • the wrapping papers of Experimental Examples 1 to 18 did not contain a combustion improver, whereas the standard wrapping paper for a cigarette contained 1.0 wt% of a combustion improver (sodium citrate).
  • the loading material content when the basis weight of a wrapping paper is 25 gsm or more and 35 gsm or less, the loading material content is desirably 15 to 45 wt%, and when the basis weight is more than 35 gsm and 45 gsm or less, the loading material content is desirably 25 to 45 wt%, from the viewpoint of appearance impressions.
  • the loading material content is lower than the lower limit of each of the above basis weight ranges, the opacity tends to be low, and when the paper is used as a wrapping paper, the shredded tobacco contained therein may be seen therethrough. It can also be seen that even if the basis weight and the loading material content are within the above ranges, the wrapping paper containing a combustion improver are undesirable from the viewpoint of appearance impressions.

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  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
  • Paper (AREA)
EP18928607.3A 2018-07-30 2018-07-30 Papier à rouler pour article à fumer chauffé sans combustion, article à fumer chauffé sans combustion et système à fumer à chauffage électrique Pending EP3832013A4 (fr)

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KR102562462B1 (ko) * 2018-05-01 2023-08-02 니뽄 다바코 산교 가부시키가이샤 비연소가열형 흡연 물품용의 권지, 비연소가열형 흡연 물품 및 전기가열형 흡연 시스템
KR102455535B1 (ko) * 2020-06-16 2022-10-17 주식회사 케이티앤지 에어로졸 생성 장치 및 그 동작 방법
WO2022049212A1 (fr) * 2020-09-02 2022-03-10 Jt International Sa Article de génération d'aérosol à chauffage sans combustion comprenant un matériau de remplissage non combustible
JPWO2022102541A1 (fr) * 2020-11-13 2022-05-19

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CA2057962C (fr) * 1991-01-05 1999-08-10 Larry Bowen Nouveau produit pour les fumeurs
US5284166A (en) * 1992-10-07 1994-02-08 Kimberly-Clark Corporation Method of producing brown cigarette wrapper paper
US5893372A (en) * 1997-04-07 1999-04-13 Schweitzer Maudit International, Inc. High opacity wrapping paper
US9255361B2 (en) * 2006-03-31 2016-02-09 Philip Morris Usa Inc. In situ formation of catalytic cigarette paper
EA025866B1 (ru) * 2010-03-26 2017-02-28 Филип Моррис Продактс С.А. Курительное изделие с термостойким листовым материалом
GB201315492D0 (en) * 2013-08-30 2013-10-16 British American Tobacco Co Smoking Article
CN106368069B (zh) * 2016-10-19 2019-02-05 中烟摩迪(江门)纸业有限公司 一种加热非燃烧卷烟纸及其制备方法
CN106480773B (zh) * 2016-10-19 2019-02-05 中烟摩迪(江门)纸业有限公司 一种耐高温非燃烧卷烟纸及其制备方法

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