JP7105889B2 - Paper wrapping for non-combustion heating smoking articles, non-combustion heating smoking articles and electrically heated smoking systems - Google Patents

Description

TECHNICAL FIELD The present invention relates to paper wrappings for non-combustion heat smoking articles, non-combustion heat smoking articles, and electrically heated smoking systems.

Non-combustion heating smoking articles are known in which heat is applied from the periphery of a tobacco rod containing tobacco cuts and volatile components are delivered to the user. In non-combustion heating smoking articles, a tobacco rod wrapped in wrapping paper is heated, but unlike conventional cigarettes, the tobacco rod remains unburned after use (after heating).
In conventional cigarettes, white (colorless) paper is generally used as wrapping paper for wrapping tobacco pieces, although logos and the like may be attached.

It has been found that, in non-combustion-heating smoking articles, if the wrapping paper used in conventional cigarettes is used as the wrapping paper for wrapping tobacco cuts, the heating during use may cause uncomfortable discoloration for the user. . To solve this problem, there is a method of using a specific colored paper to make the discoloration inconspicuous, but it was found that a different device is required to use a highly versatile white paper.
SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a wrapping paper for a non-combustion heating smoking article that does not cause the unpleasant appearance that heating can cause.

In order to solve the above-mentioned problems, the inventors of the present invention have found that the unpleasant discoloration is reduced by using a wrapping paper having a specific whiteness degree before heating and a white portion having a discoloration range in a specific range after heating. Focused on being inconspicuous.
Pulp-based paper burns and turns brown when heated above a certain temperature. cannot be easily prevented. However, it was found that even if discoloration due to scorching occurs, if the color of the original paper and the degree of discoloration therefrom are small within a certain range, it can be made difficult to visually recognize as unpleasant scorched color.
The inventors of the present invention have found that the range of permissible color difference change to the degree of visual discoloration is represented by a formula, and apply the values of L ^* , a ^* , and b ^* before and after heating to the formula. The problem of unpleasant discoloration peculiar to non-combustion heating smoking articles can be solved by using paper as wrapping paper that exhibits a specific numerical value when heated and has a white portion with a specific degree of whiteness before heating. I found
Specifically, the present inventor solved the above-mentioned unpleasant discoloration problem by using paper having an ISO whiteness of 83% or more before heating and having a white portion with a small color difference before and after heating. found that it can be done.
The problem of the present invention is unique to non-combustion heating smoking articles that are heated by an electric heating device, and is a problem that does not occur in conventional smoking articles (cigarettes, etc.).

That is, the present invention is as follows.
[1] The discriminant score obtained by substituting the color difference values in the CIELab color system before and after heating at 230 ° C. for 3 minutes into the following formula (1) shows a numerical value lower than 0.62, and ISO white A wrapping paper for a non-combustion heating smoking article, having a white portion with a degree of 83% or more.
Discrimination score (y) y = -0.18 x ΔL ^* +0.08 x Δa ^* +0.13 x Δb ^* -2.36 (1)
(In formula (1), the color difference values in the CIELab color system before and after heating are obtained by subtracting the L ^* , a ^* , b ^* values before heating from the L ^* , a ^* , b ^* values after heating. ΔL ^* indicates the difference in lightness L ^* before and after heating the wrapping paper, and Δa ^* indicates the difference in chromaticity a ^* between after heating and before heating the wrapping paper. and Δb ^* is the difference in chromaticity b ^* between after heating the wrapping paper and before heating.)
[2] The wrapping paper for non-combustion heating smoking articles contains a filler, the filler content is 15 to 45% by weight, and the basis weight of the wrapping paper for non-combustion heating smoking articles is 25 to 45 gsm. There is
When the basis weight is 25 gsm or more and 35 gsm or less, the filler is 15 to 45% by weight,
The wrapping paper for non-combustion heating smoking articles according to [1], wherein the filler is 25 to 45% by weight when the basis weight is more than 35 gsm but not more than 45 gsm.
[3] The wrapping paper for non-combustion heating smoking articles according to [1] or [2], which has a tensile strength of 8 N/15 mm or more.
[4] The wrapping paper for non-combustion heating smoking articles according to [2] or [3], wherein the filler is calcium carbonate and the opacity of the wrapping paper is 60% or more.
[5] The wrapping paper for non-combustion heating smoking articles according to any one of [1] to [4], wherein the discrimination score of the white portion is less than 0.
[6] The wrapping paper for non-combustion heating smoking articles according to any one of [1] to [5], wherein the wrapping paper does not contain a combustion improver.
[7] A tobacco rod portion in which a filler containing tobacco shreds and an aerosol-generating base material is wrapped with a first wrapping paper for wrapping the filler, and an end opposite to the tobacco rod portion. wherein the tobacco rod and the mouthpiece are connected using a second wrapping paper that is the same as or different from the wrapping paper around which the filling is wrapped. A non-combustion heating smoking article, wherein at least one of the first wrapping paper and the second wrapping paper is the wrapping paper according to any one of [1] to [6].
[8] An electric heating type comprising a heater member, a heat transfer member that transfers heat from the heater member, a battery unit that serves as a power source for the heater member, and a control unit that controls the heater member. An electrically heated smoking system comprising a device and the non-combustion heated smoking article of [7] fitted so as to be in contact with the heat transfer member.

ADVANTAGE OF THE INVENTION According to the present invention, it is possible to provide a wrapping paper for a non-combustion heating smoking article that does not cause the unpleasant appearance that can be caused by heating.

1 is a schematic diagram illustrating one embodiment of a non-combustion heating smoking article; FIG. FIG. 4 is a schematic diagram showing another aspect of a non-combustion heating smoking article. 1 is a schematic diagram illustrating one aspect of an electrically heated smoking system; FIG. FIG. 4 is a diagram showing the relationship between the ΔL ^* value before and after heating each paper sample and the appearance impression. FIG. 4 is a diagram showing the relationship between the Δa ^* value and appearance impression before and after heating each paper sample. FIG. 4 is a diagram showing the relationship between the Δb ^* value before and after heating of each paper sample and the appearance impression. FIG. 4 is a diagram showing the results of discriminant analysis performed using the relationship between the Δ values of L ^* , a ^* , and b ^* of each paper sample before and after heating and the appearance impression. FIG. 4 is a diagram showing the relationship between the Δa ^* value and the Δb ^* value of each paper sample before and after heating; FIG. 4 is a diagram plotting the relationship between the content of filler in a wrapping paper and the discriminant score for each basis weight.

Hereinafter, the present invention will be described in detail by showing embodiments and examples, etc., but the present invention is not limited to the following embodiments, examples, etc., and can be arbitrarily set within the scope of the invention. It can be changed and implemented.

<Wrapper for non-combustion heating smoking article>
As used herein, the term “paper wrapping for non-combustion heating smoking articles” refers to wrapping paper used for non-combustion heating smoking articles described later. Hereinafter, it is simply referred to as wrapping paper according to the embodiment of the present invention. Regarding the use of the wrapping paper according to the embodiment of the present invention, "for non-combustion heating smoking articles" means that it is used for wrapping a filler containing tobacco shreds to make a tobacco rod, or is used for wrapping tobacco rods. It means that it is used for winding the outer peripheral surfaces of the members to connect them.

For the wrapping paper according to the embodiment of the present invention, L ^* , a ^* , and b ^* were measured before and after heating at 230°C for 3 minutes (simply referred to as before and after heating), and the difference between the values before and after heating (heating The value obtained by subtracting the value before heating from the value after heating) is expressed as ΔL ^* , Δa ^* , Δb ^* , respectively, and y (discriminant score) obtained by substituting these values into the following formula (1) is , has a value of less than 0.62 and has a white part with an ISO whiteness of 83% or more.
y (discrimination score) = -0.18 x ΔL ^* +0.08 x Δa ^* +0.13 x Δb ^* -2.36 (1)
The wrapping paper according to the embodiment of the present invention has a white portion showing a discriminant score of less than 0.62 obtained by substituting each value of ΔL ^* , Δa ^* , and Δb ^* into the above formula (1). If so, there are no particular restrictions on the values of L ^* , a ^* , and b ^* before heating.
In addition, the white portion having the above discrimination score may exist on the entire surface of the wrapping paper according to the embodiment of the present invention, or at least in the portion that receives heating (heating by an electric heating device described later). There may be.
The ISO whiteness can be obtained by the following method.
JIS8148: 2001 A whiteness/opacity measuring instrument (manufacturer: Murakami Color Research Laboratory, model number: WMS-1) in accordance with the method for measuring ISO whiteness (diffuse blue light reflectance) of paper, paperboard and pulp. Measure using
The white part tends to have an ISO whiteness of 83% or higher when the L ^* value before heating is high (bright and pale). In one form of wrapping paper, the L ^* value of the white portion before heating may be 95% or more.
It will be shown in a later example that if y (discriminant score) obtained by the above formula (1) is smaller than 0.62, no discomfort related to the appearance that can be caused by heating occurs. When y (distinguishment score) obtained by the above formula (1) is less than 0, those whose appearance is not impaired before and after heating are more reliably included.

In the wrapping paper according to the embodiment of the present invention, the values of L ^* , a ^* , and b ^* before and after heating are measured at five points on the white portion of the sample paper, and their simple average values are adopted. The object of measurement is any point on the white part of the paper, but if the paper has characters or patterns such as logos, the object is the white part where such characters or logos do not exist. do. Each value of L ^* , a ^* , and b ^* can be measured using a spectrophotometer.
Specifically, a spectrophotometer (manufactured by X-Rite, product name SpectroEye) is used. The measurement is performed by placing a sheet of paper on a sheet of paper having an ISO whiteness of 92% under the conditions of a light source D65, no light source filter, and a viewing angle of 2°, and pressing the measuring part of the spectrophotometer thereon.

Means for obtaining paper (also referred to as paper having the above characteristics) having a white portion with a discriminant score obtained by the above formula (1) showing a value smaller than 0.62 and an ISO whiteness of 83% or more A known method can be used without any particular limitation. If the entire surface of the wrapping paper shows a discriminant score of less than 0.62 and has a white part with an ISO whiteness of 83% or more, the type and content of pulp and filler should be adjusted at the paper manufacturing stage. can produce such wrapping paper. Concretely, it is possible to increase the content of the filler described later and minimize the use of the colored material.
On the other hand, when a portion of the wrapping paper has a colored portion within a range that does not impair the appearance impression after heating, the colored portion showing the desired hue may be imparted by, for example, printing. The printing method is not particularly limited, and examples thereof include gravure printing and offset printing. A colored portion refers to a portion having an ISO whiteness of less than 83%.
When a logo or partial pattern is attached to the base paper as a colored portion by printing, the printed surface (printed portion) is not subject to colorimetry using a spectrophotometer. In addition, when a colored portion is imparted to the wrapping paper by printing, the ratio of the area can be 10% or less, preferably 5% or less, and more preferably 3% or less. Conversely, in the wrapping paper according to the embodiment of the present invention, the area ratio of the white portion can be 90% or more, preferably 95% or more, and more preferably 97% or more. On the other hand, if the colored portion has a regular pattern and does not affect the appearance impression before and after heating, the ratio of the area of the white portion may be 50% or more.
On the surface of the wrapping paper, at least the heated portion (the portion heated by the electric heating device) has a discrimination score according to the above formula (1) of less than 0.62 and an ISO whiteness of 83% or more. is preferred. Among the surfaces of the wrapping paper, if the portion to be heated by the electric heating device described later has the above properties, it is possible to prevent deterioration of the impression of the appearance after heating.

The basis weight of the base paper for wrapping paper according to the embodiment of the present invention is, for example, usually 20 gsm or more, preferably 25 gsm or more. On the other hand, the basis weight is usually 65 gsm or less, preferably 50 gsm or less, more preferably 45 gsm or less. The relationship between the basis weight and the filler content will be described later.
The thickness of the wrapping paper having the above properties is not particularly limited, and is usually 10 μm or more, preferably 20 μm or more, more preferably 30 μm or more, from the viewpoint of rigidity, air permeability, and ease of adjustment during paper production. and is usually 100 μm or less, preferably 75 μm or less, more preferably 50 μm or less.
The wrapping paper for non-combustion heating smoking articles may be square or rectangular in shape. When used as a wrapping paper for wrapping tobacco cuts (for making a tobacco rod), the length of one side can be about 15 to 70 mm, and the length of the other side is about 15 to 26.5 mm. A preferable length of one side can be 24 mm.
When a tobacco rod and another member adjacent to the tobacco rod are connected and wound, such as tipping paper, the length of one side is 20 to 60 mm and the length of the other side is 15 to 26.5 mm. can be mentioned.

As the wrapping paper having the above characteristics, a paper containing pulp as a main component can be mentioned. As for the pulp, in addition to being made from wood pulp such as softwood pulp and hardwood pulp, non-wood pulp such as flax pulp, hemp pulp, sisal pulp, and esparto, which are generally used for wrapping paper for smoking articles, are mixed. and obtained by manufacturing.
The types of pulp that can be used include chemical pulp, ground pulp, chemi-grand pulp, thermomechanical pulp, and the like prepared by the kraft cooking method, acid/neutral/alkaline sulfite cooking method, soda salt cooking method, and the like.

The above pulp is used in the papermaking process using a fourdrinier paper machine, a cylinder paper machine, a round and short combined paper machine, or the like, to produce a wrapping paper by adjusting the texture and making it uniform. If necessary, the above-mentioned wet paper strength enhancer can be added to impart water resistance to the wrapping paper, or a sizing agent can be added to adjust the printing quality of the wrapping paper. Furthermore, aluminum sulfate, various anionic, cationic, nonionic or amphoteric retention improvers, drainage improvers, and papermaking internal additives such as paper strength agents, as well as dyes, pH adjusters, Papermaking additives such as antifoam agents, pitch control agents, and slime control agents can be added.

In addition to the pulp described above, the wrapping paper according to embodiments of the present invention includes filler. The content of the filler can be 10% by weight or more and less than 60% by weight, preferably 15 to 45% by weight, based on the total weight of the wrapping paper according to the embodiment of the present invention.
Wrapping papers according to embodiments of the present invention preferably have 15 to 45 weight percent filler in the preferred basis weight range (25 to 45 gsm).
Further, when the basis weight is 25 gsm or more and 35 gsm or less, the filler content is preferably 15 to 45 weight percent, and when the basis weight is greater than 35 gsm and 45 gsm or less, the filler content is preferably 25 to 45 weight percent.
As the filler, calcium carbonate, titanium dioxide, kaolin and the like can be used, but calcium carbonate is preferably used from the viewpoint of improving smoking taste and whiteness.
Papers containing such fillers usually have a bright whitish color and can retain their whiteness permanently. By including a large amount of such fillers, the ISO brightness of the wrapping paper can be increased to 83% or higher.

The wrapping paper according to the embodiment of the present invention preferably has a tensile strength of 8 N/15 mm or more as measured by the following measurement method from the practical viewpoint of use as a wrapping paper for non-combustion heating smoking articles.
This tensile strength can be increased by reducing the filler content. Specifically, it can be increased by making the content of the filler less than the upper limit of the content of the filler shown in each basis weight range exemplified above.
<Method for measuring tensile strength>
P8113:2006 (ISO1924-2:1994) Paper and paperboard-Testing methods for tensile properties-Part 2: Measured using a Strograph EL manufactured by Toyo Seiki Seisakusho in accordance with the constant rate stretching method.

On the other hand, the wrapping paper according to the embodiment of the present invention preferably has an opacity of 60% or more as measured by the following measuring method. Opacity can be increased by increasing the filler content in the wrapper. Specifically, it can be increased by increasing the filler content above the lower limit of the filler content shown in each basis weight range exemplified above.
<Measurement method of opacity>
The opacity is a value measured according to ISO2471 using a whiteness/opacity measuring instrument (manufacturer: Murakami Color Research Laboratory, model number: WMS-1). The opacity is a value calculated by the formula: single sheet luminous reflectance coefficient (R0)/specific luminous reflectance coefficient (R∞)×100 (%). The intrinsic luminous reflectance coefficient (R∞) in this formula is the intrinsic reflectance coefficient of whiteness when measured under spectral conditions with an effective wavelength of 457 nm and a half width of 44 nm using a specified reflectometer and light source. be.

The wrapping paper according to the embodiment of the present invention preferably does not contain the combustion improver contained in the conventional tobacco rod wrapping paper, in order to satisfy the above discriminant score. The wrapping paper according to the embodiment of the present invention may be used as the first wrapping paper or the second wrapping paper used in the non-combustion heating smoking article described later.

<Non-combustion heating smoking article>
As a non-combustion heating smoking article according to an embodiment of the present invention, for example, one having the configuration shown in FIG. 1 can be mentioned.
The non-combustion heating smoking article 10 shown in FIG. A second wrapping paper 13 (chipping paper in FIG. 1) that is the same as or different from the wrapping paper around which the filling is wrapped is used for the tobacco rod portion and the mouthpiece portion. Concatenated. In addition, in the embodiment of the present invention, even if each of the first wrapping paper and the second wrapping paper is composed of only one sheet, it will not be burned down by heating. The cost can be reduced if each is composed of only one sheet.
At least one of the first wrapping paper and the second wrapping paper is the wrapping paper according to the embodiment of the present invention described above. At least the first wrapping paper is preferably a 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 are wrapping papers according to the embodiments of the present invention described above.
In the embodiment shown in FIG. 1 , the mouthpiece section 16 includes a paper tube section 14 and a filter section 15 . Moreover, tipping paper 13 is provided as a second wrapping paper for connecting them. Although the mouthpiece portion 16 is composed of two segments in FIG. 1, the mouthpiece portion 16 may be composed of a single segment, or may be composed of three or more segments. Moreover, the segment that constitutes the mouthpiece portion may be configured to include both the paper tube portion and the filter portion, or may be configured from only one of them.

FIG. 2 shows that the mouthpiece portion 16 is composed of three segments. The embodiment of FIG. 2 has a hollow segment portion 17 between the paper tube portion 14 and the filter portion 15 of FIG. The hollow segment portion 17 is composed of a packing layer having one or more hollow channels and a plug wrapper covering the packing layer. The filling layer is, for example, a rod having an inner diameter of φ4.5 to φ1.0 mm filled with cellulose acetate fibers at a high density and hardened by adding 6 to 20% by weight of a plasticizer containing triacetin to the weight of cellulose acetate. be able to. Since the packed bed has a high packing density of fibers, air and aerosol flow only in the channel portion during suction, and hardly flow in the packed bed. In a non-combustion heating smoking article, when it is desired to reduce the reduction of the aerosol component due to filtration in the filter part 15, shortening the length of the filter part 15 and replacing it with the hollow segment part 17 increases the delivery amount of the aerosol component. effective for Since the filling layer inside the hollow segment part 17 is a fiber filling layer, the feeling of touch from the outside during use is closer to that of the filter part than the paper tube part 14, which makes the user feel uncomfortable. Less is.

1 and 2, the non-combustion heating smoking article 10 preferably has a longitudinal length of 40 mm to 90 mm, more preferably 50 mm to 75 mm, and 50 mm to 60 mm. It is even more preferable to have The circumference of the non-combustion heating smoking article is preferably 15 mm to 25 mm, more preferably 17 mm to 24 mm, and even more preferably 20 mm to 22 mm. In the embodiment shown in FIG. 2, the length of the tobacco rod portion is 20 mm, the length of the paper tube portion is 20 mm, the length of the hollow segment portion is 8 mm, and the length of the filter portion is 7 mm. However, the length of each of these segments can be changed as appropriate according to manufacturability, required quality, and the like.

As the vapor containing the aerosol-generating base material and the tobacco flavor component generated by heating the tobacco rod passes through the paper tube portion 14, it contacts the air in the paper tube and is cooled, thereby liquefying and becoming an aerosol. is generated.
In the non-combustion heating smoking article 10, the paper tube portion 14 and part of the second wrapping paper 13 (tipping paper) covering the paper tube portion 14 have micro holes for taking in air from the outside. (not shown). Due to the presence of such micropores, air flows into the inside of the paper tube portion 14 from the outside during use, and steam containing the aerosol-generating base material and the tobacco flavoring component generated by heating the tobacco rod is generated. , it liquefies when it comes in contact with air from the outside and the temperature drops, making the generation of aerosols more reliable.
The paper tube portion 14 can be, for example, a cylindrically processed cardboard.
The filter part 15 may be made of, for example, acetate tow. The single filament fineness and total fineness of the acetate tow are not particularly limited.
Although the filter portion 15 is composed of a single segment in FIG. 1, it may be composed of a plurality of segments. When it is composed of a plurality of segments, for example, an embodiment in which a hollow segment is arranged on the upstream side and a mouthpiece section is filled with acetate tow as a segment on the downstream side (on the side of the user's mouthpiece end) can also be mentioned. . According to this aspect, it is possible to prevent unnecessary loss of generated aerosol and improve the appearance of the non-combustion heating smoking article.
In addition, in the production of the filter, adjustment of airflow resistance and addition of additives (known adsorbents, fragrances, fragrance-retaining materials, etc.) can be appropriately designed.
The material of the second wrapping paper 13 (tipping paper) is not particularly limited, but the wrapping paper according to the embodiment of the present invention may be used partially or wholly. For the second wrapping paper 13, for example, vinyl acetate glue is used to wrap around the tobacco rod, the paper tube portion 14, and the filter portion 15, and then the wrapping paper 13 is fixed.

The tobacco rod includes cut tobacco as the filler 11, and the material of the cut tobacco is not particularly limited, and known materials such as lamina and backbone can be used. The content range of the filler in the tobacco rod is 200 to 400 mg/rod, preferably 250 to 320 mg/rod, for a tobacco rod having a circumference of 22 mm and a length of 20 mm. The water content of the filling may be 10-15% by weight, preferably 11-13% by weight. With such a water content, the occurrence of winding stains is suppressed, and the winding aptitude at the time of manufacturing the tobacco rod is improved.

There are no particular restrictions on the size of the cut tobacco used as the filling and the preparation method thereof. For example, dried tobacco leaves chopped into widths of 0.8 to 1.2 mm may be used.
Alternatively, dried tobacco leaves may be pulverized to have an average particle diameter of about 20 to 200 μm, homogenized, processed into sheets, and cut into pieces having a width of 0.8 to 1.2 mm. .
Furthermore, the above-mentioned sheet-processed material may be gathered without being chopped and used as the filling material.

The fill includes an aerosol-generating substrate that produces an aerosol smoke. The type of the aerosol-generating substrate is not particularly limited, and substances extracted from various natural products and/or constituents thereof can be selected depending on the application. Aerosol-forming substrates can include glycerin, propylene glycol, triacetin, 1,3-butanediol, and mixtures thereof.
The content of the aerosol-generating base material in the filling is not particularly limited, and is usually 5% by weight or more, preferably 10% by weight or more, from the viewpoint of sufficiently generating an aerosol and imparting a good smoking taste. It is usually 50% by weight or less, preferably 20% by weight or less.

The filling may contain perfume. The type of flavor is not particularly limited, and from the viewpoint of imparting a good taste, acetoanisole, acetophenone, acetylpyrazine, 2-acetylthiazole, alfalfa extract, amyl alcohol, amyl butyrate, trans-anethole, star anise oil. , apple juice, Peruvian balsam oil, beeswax absolute, benzaldehyde, benzoin resinoids, benzyl alcohol, benzyl benzoate, benzyl phenylacetate, benzyl propionate, 2,3-butanedione, 2-butanol, butyl butyrate, butyric acid, caramel, cardamom oil. , carob absolute, beta-carotene, carrot juice, L-carvone, beta-caryophyllene, cassia bark oil, cedarwood oil, celery seed oil, chamomile oil, cinnamaldehyde, cinnamic acid, cinnamyl alcohol, cinnamyl cinnamate, citronella Oil, DL-citronellol, clary sage extract, cocoa, coffee, cognac oil, coriander oil, cumin aldehyde, davana oil, δ-decalactone, γ-decalactone, decanoic acid, dill herb oil, 3,4-dimethyl-1,2 -cyclopentanedione, 4,5-dimethyl-3-hydroxy-2,5-dihydrofuran-2-one, 3,7-dimethyl-6-octenoic acid, 2,3-dimethylpyrazine, 2,5-dimethylpyrazine , 2,6-dimethylpyrazine, ethyl 2-methylbutyrate, ethyl acetate, ethyl butyrate, ethyl hexanoate, ethyl isovalerate, ethyl lactate, ethyl laurate, ethyl levulinate, ethyl maltol, ethyl octanoate, ethyl oleate , ethyl palmitate, ethyl phenylacetate, ethyl propionate, ethyl stearate, ethyl valerate, ethyl vanillin, ethyl vanillin glucoside, 2-ethyl-3, (5 or 6)-dimethylpyrazine, 5-ethyl-3-hydroxy -4-methyl-2(5H)-furanone, 2-ethyl-3-methylpyrazine, eucalyptol, fenugreek absolute, gene absolute, gentian root infusion, geraniol, geranyl acetate, grape juice, guaiacol, guava extract, γ-heptalactone, γ-hexalactone, hexanoic acid, cis-3-hexen-1-ol, hexyl acetate, hexyl alcohol, hexyl phenylacetate, honey, 4-hydroxy-3-pentenoic acid lactone, 4-hydroxy-4 - (3-hi droxy-1-butenyl)-3,5,5-trimethyl-2-cyclohexen-1-one, 4-(para-hydroxyphenyl)-2-butanone, sodium 4-hydroxyundecanoate, inmolter absolute, β- Ionone, isoamyl acetate, isoamyl butyrate, isoamyl phenylacetate, isobutyl acetate, isobutyl phenylacetate, jasmine absolute, cola nut tincture, labdanum oil, lemon terpene-less oil, licorice extract, linalool, linalyl acetate, lovage root oil, maltol, maple syrup, menthol, menthone, L-menthyl acetate, para-methoxybenzaldehyde, methyl-2-pyrrolyl ketone, methyl anthranilate, methyl phenylacetate, methyl salicylate, 4'-methylacetophenone, methylcyclopentenolone, 3-methylvaleric acid, Mimosa absolute, honey, myristic acid, nerol, nerolidol, γ-nonalactone, nutmeg oil, δ-octalactone, octanal, octanoic acid, orange flower oil, orange oil, orris root oil, palmitic acid, ω-pentadecalactone, Peppermint Oil, Petitgrain Paraguay Oil, Phenethyl Alcohol, Phenethyl Phenylacetate, Phenylacetic Acid, Piperonal, Plum Extract, Propenylguaetol, Propyl Acetate, 3-Propylidenephthalide, Prunes Juice, Pyruvic Acid, Raisin Extract, Rose. Oil, rum, sage oil, sandalwood oil, spearmint oil, styrax absolute, marigold oil, tea distillate, α-terpineol, terpinyl acetate, 5,6,7,8-tetrahydroquinoxaline, 1,5,5 ,9-tetramethyl-13-oxacyclo(8.3.0.0(4.9))tridecane, 2,3,5,6-tetramethylpyrazine, thyme oil, tomato extract, 2-tridecanone, citric acid triethyl, 4-(2,6,6-trimethyl-1-cyclohexenyl)2-buten-4-one, 2,6,6-trimethyl-2-cyclohexene-1,4-dione, 4-(2,6 ,6-trimethyl-1,3-cyclohexadienyl)2-buten-4-one, 2,3,5-trimethylpyrazine, γ-undecalactone, γ-valerolactone, vanilla extract, vanillin, veratraldehyde , Violet Leaf Absolute are particularly preferred. is menthol. Moreover, these fragrance|flavors may be used individually by 1 type or in combination of 2 or more types.

The content of the flavoring agent in the filling is not particularly limited, and is usually 10,000 ppm or more, preferably 20,000 ppm or more, more preferably 25,000 ppm or more, and usually 50,000 ppm or less, from the viewpoint of imparting good smoking taste. , preferably 40000 ppm or less, more preferably 33000 ppm or less.

The filling density of the filling is not particularly limited, but is usually 250 mg/cm ³ or more, preferably 320 mg/cm ³ or more, from the viewpoint of ensuring the performance of the non-combustion heating smoking article and imparting good smoking taste. and is usually 520 mg/cm ³ or less, preferably 420 mg/cm ³ or less.

The wrapping paper according to the above-described embodiments of the present invention can be used in the manufacture of non-combustion heating smoking articles according to the embodiments of the present invention. Specifically, a filling containing cut tobacco and an aerosol-generating base material is formed, and then the wrapping paper according to an embodiment of the present invention is used to wrap the formed filling to obtain a tobacco rod. can be done. Furthermore, a non-combustion heating smoking article can be obtained by wrapping the tobacco rod and the member forming the mouthpiece portion with tipping paper (or the wrapping paper according to the embodiment of the present invention). A known winding device can be used for winding.
By using 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 when manufacturing a non-combustion heating smoking article, the impression of the appearance after use (after heating) is spoiled. A non-combustion heating smoking article can be provided.

A non-combustion heating smoking article 10, which is an embodiment of the present invention, comprises a tobacco rod composed of a filler 11 and a wrapping paper 12 (the wrapping paper according to the embodiment of the present invention), a paper tube portion 14, and a filter portion 15. and a second wrapping paper 13 for connecting them. In addition, the non-combustion heating smoking article 10 may have micro holes in the paper tube portion 14 and part of the second wrapping paper 13 covering the periphery of the paper tube portion 14 for taking in air from the outside. good (not shown). Due to the presence of such micropores, air flows into the inside of the paper tube portion 14 from the outside during use, and steam containing the aerosol-generating base material and the tobacco flavoring component generated by heating the tobacco rod is generated. , it liquefies when it comes in contact with air from the outside and the temperature drops, making the generation of aerosols more reliable.

<Electric Heating Smoking System>
One embodiment of an electrically heated smoking system is illustrated in FIG. The electrically heated smoking system 30 is fitted so that the above-described non-combustion heated smoking article 10 is in contact with the heat transfer member 25 disposed inside the electrically heated device 20 and in contact with the heater 24 . used.
The electric heating device 20 has, for example, a battery unit 21 and a control unit 22 inside a resin frame 23 .
As described above, the non-combustion heating smoking article comprises a tobacco rod portion composed of the filler 11, the first wrapping paper 12 around which the filler 11 is wound, and the end opposite to the tobacco rod portion. The tobacco rod part and the mouthpiece part are connected using a second wrapping paper that is the same as or different from the wrapping paper that wraps the filler. The mouthpiece portion 16 of the non-combustion heating smoking article may be composed of the paper tube portion 14 and the filter portion 15 as shown in FIG. You may have a hollow segment comprised of the filling layer 17 between.
When the non-combustion heating smoking article is fitted into the electric heating device, the outer periphery is composed of the outer peripheral surface of the tobacco rod and the second wrapping paper (tipping paper 13) connecting the tobacco rod and the paper tube portion 14. A portion of the surface contacts the heat transfer member 25 inside the electrically heated device 20 .
A heater 24 inside the electric heating device 20 generates heat under the control of the control unit 22 . The heat is transmitted to the tobacco rod of the non-combustion heating smoking article via the heat transfer member 25, and the aerosol-generating base material and the flavor component contained in the filler 11 of the tobacco rod volatilize together.
Heating by the heater 24 heats the tobacco rod to approximately 150 to 250.degree.
When measuring the above L ^* , a ^* , and b ^* , the heating temperature of the wrapping paper is set to 230°C and the heating time is set to 3 minutes. It is set as a premise.
The vapor containing the aerosol-generating base material and the flavor component generated by heating is aerosolized inside the paper tube portion 14 by the mechanism described above, and reaches the oral cavity of the user through the filter portion 15 of the non-combustion heating smoking article 10. do.

EXAMPLES The present invention will be described more specifically with reference to Examples, but the present invention is not limited to the description of the Examples below as long as the gist of the present invention is not exceeded.

<Preparation of paper samples before and after heating>
Papers having various numerical values for lightness L ^* , chromaticity a ^* , and chromaticity b ^* in the CIELab color system were prepared. As the colored paper, for example, a gravure printed product, a mixed product in which unbleached pulp is mixed with white ordinary pulp, a tobacco sheet in which fine tobacco leaves are mixed, and the like are prepared. A normal tipping paper base paper and a wrapping paper using 100% virgin pulp were prepared as a control paper sample without coloring. A total of 26 types of paper were prepared.
The contents are shown in Table 1 below.

<Heating conditions>
A muffle furnace (product name: Muffle Furnace FO410 type, manufactured by Yamato Scientific Co., Ltd.) was adjusted in advance to 230°C. The door was opened, the paper sample was placed on household aluminum foil (material: aluminum foil, thickness: 11 μm), placed in a muffle furnace, and the door was closed. The operation was quick (within 3 seconds) to minimize the temperature drop in the muffle furnace. Under the heating conditions in this example (muffle furnace temperature set at 230°C, paper sample heating time of 3 minutes), the actual temperature of the paper reached about 230°C, the same as the muffle furnace set temperature, at the latest one minute after the door was closed. Met. This was confirmed using color change temperature test paper (Thermolabel 5E-170/Thermolabel 5E-210 (manufactured by NOF Giken Kogyo Co., Ltd.).
<Color difference measurement>
The hue of each sample before and after heating was measured using a spectrophotometer (manufactured by X-Rite, product name SpectroEye). Measurement was carried out by placing a sheet of paper on a sheet of paper with ISO whiteness of 92% under the conditions of a D65 light source, no light source filter, and a viewing angle of 2°, and pressing the measurement part of the spectrophotometer thereon.
Five measurements were repeated, and the average value was used for analysis. L ^* , a ^* , and b ^* were measured as they were, and ΔL ^* , Δa ^* , and Δb ^* were obtained by subtracting the values before heat discoloration from the values after heat discoloration.
There are various evaluation and classification systems for color evaluation. ing. It is a convenient classification system that approximates human senses, is commonly used, and can quantify hues in three dimensions. ^Note that L ^* is an axis representing ^lightness , a ^* is an axis representing blue to yellow, and b ^* is an axis representing bluish green to reddish purple ^. falls. For example, L ^* ,a ^* ,b ^* =100,0,0 is white and 0,0,0 is black.

<Sensory evaluation>
Each of the 20 panelists was shown a paper sample before and after heating, and asked about the dirtiness of the appearance due to the color. If 11 or more of the 20 panelists answered that it looked dirty and uncomfortable The appearance impression of the sample was determined as x, and in the case of less than 11 people, the appearance impression of the sample was determined as ◯, and those results were used for analysis.

<Analysis>
There was no relationship between the ΔL ^* , Δa ^* , and Δb ^* values before and after heating and the appearance impression (Figs. 4A to 4C).
Since it is not possible to estimate whether the color tone of paper after heating is good or bad from a simple diagram based on the difference in single hue values, we investigated the use of discriminant analysis using color difference data to understand the relevance of multiple factors. Discriminant analysis was performed. As a result, it was possible to obtain a function using the ΔL ^* , Δa ^* , and Δb ^* values as parameters that can determine the appearance impression with a high probability of discrimination rate of 96.2%. The P value of the discriminant is less than 0.001 and is statistically highly significant, and it is generally said that if the discrimination rate exceeds 75%, it can be used for estimation, so the discrimination rate is 96.2%. This means that the level is almost perfectly predictable.
Discrimination score y = -0.18 x ΔL ^* +0.08 x Δa ^* +0.13 x Δb ^* -2.36 (1)
Discrimination score of 0.62 or more: × (bad)
Discrimination score less than 0.62: ○ (good)
Formula (1) means that the appearance impression after heating is almost determined by ΔL ^* , Δa ^* , and Δb ^* , which are the color differences between the paper sample before heating and the paper sample after heating ^. is lower, and the higher the values of Δa ^* and Δb ^* , the higher the discriminant score. In other words, it is located in the direction where the impression of the paper after heating is bad.
FIG. 5 summarizes the results.
For the discriminant analysis, two groups of discriminant analysis of multivariate analysis, Excel Statistics Ver. 2.15 manufactured by Bell Curve, were used and analyzed under the following conditions.
(1) Increase/decrease method P value: input 0.2 removal 0.2
(2) Analyze by excluding linearly combined variables

FIG. 6 shows the relationship between Δa ^* and Δb ^* of the paper samples investigated this time in order to explain in more detail.
Since it cannot be specified three-dimensionally, the value of ΔL ^* was binarized at -10 for convenience, and values lower than -10 (dark discoloration) were indicated by black circles or bold x.

Samples with a poor appearance impression in the evaluation are indicated by "x", and are positioned at locations where both the values of Δa ^* and Δb ^* are high. This means that the color change to reddish purple, yellow, or a combination of these brown colors is large due to heating, and many of them have a relatively low ΔL ^* . In other words, it can be understood intuitively that these samples are a group of samples that visually approximates a so-called light burnt color to a deep burnt color, and that they are a group of samples with a bad appearance impression.
Before heating, these sample groups had relatively high L ^* values and low a ^{* and b* values} , that is, many of them were bright and low in chroma. It is thought that such a bright and light-hued sample tends to show a conspicuous change in brown color due to heating, leading to a poor appearance impression.
On the contrary, the samples marked with "◯", which gave a good impression of appearance, were located at low values of Δa ^* and Δb ^* . This means that heating causes a large color change in the direction of blue, green, or a combination of these blue-green colors. Some of them have a relatively low ΔL ^* value, that is, they are dark even though they are dark. Contrary to the case of ×, these sample groups had relatively low L ^* values and high a ^{* and b* values} before heating, that is, many of them were dark and highly saturated. It is thought that such samples with a darker hue are not easily changed by heating, which leads to a good appearance impression.
Looking at the plots as a whole, the plots are distributed over a wide range of ±20 for Δa ^* and ±30 for Δb ^* , so this experiment is not partial, but covers samples with various hue changes. I know you are.

In the present invention, the effective range could be defined by focusing on the degree of color change before and after heating the paper and grasping the area as a numerical value.
Originally, it is conceivable that it would be easy to think of defining the area simply by the ^hue before heating for such parameterization ^. , b ^* values alone did not yield a useful formula. It is believed that the pigments, dyes, and other colored components contained in the color have different thermal decomposition behaviors, so that the degree of discoloration after heating differs for each color component. Therefore, the concept of the present invention that can accurately estimate the impression of appearance not only by the color of the original paper but also by the degree of discoloration is rational.
Based on the above test results, paper having a discriminant score of less than 0.62 shows little discoloration before and after heating, and does not give an unpleasant impression to the observer. Do you get it.

Based on the above, wrapping papers having formulations shown in Experimental Examples 1 to 18 shown in Table 2 below were prepared. Specifically, in Experimental Examples 1 to 18, the basis weight and filler content were changed as shown in Table 1. In these experimental examples, (wood pulp) was used as the pulp, and calcium carbonate (manufactured by Shiraishi Kogyo Co., Ltd.) was used as the filler. The paper was made by hand in accordance with JIS P-8222 "Pulp - Method for preparing handsheet for testing". Also, ordinary cigarette paper was prepared. The wrapping papers of Experimental Examples 1 to 18 did not contain a combustion improver, while ordinary cigarette wrapping papers contained 1.0% by weight of a combustion improver (sodium citrate).
These wrapping papers were heated at 230° C. for 3 minutes, and the values of L ^* , a ^* , and b ^* measured before heating were obtained from the values of L ^* , a ^* , and b ^* . Subtraction and Δ value were obtained, and each value was substituted into the formula for calculating the above discriminant score to obtain the discriminant score. The heating method is the same as for samples 1 to 26 above.
In addition, the ISO whiteness of these wrapping papers was measured before heating. Furthermore, according to P8113:2006 (ISO1924-2:1994) described above, the tensile strength was measured using a strograph EL manufactured by Toyo Seiki Seisakusho as a measuring device. Table 2 shows the results.

From the results in Table 2, Experimental Examples 1, 7, and 13, in which the ISO whiteness before heating was less than 83%, had a discriminant score greater than 0.62, and the appearance impression after heating was poor. On the other hand, if the ISO whiteness before heating is 83% or more and the basis weight and filler content are predetermined, the color before heating is white, in other words, L ^*. Even if the value is high and the appearance impression after heating is considered to be easily deteriorated, the appearance impression after heating is not impaired. In addition, the discriminant score of ordinary cigarette paper containing a combustion improver was higher than 0.62, and the appearance impression after heating was poor. At any basis weight, when the filler content exceeded 45% by weight, the tensile strength of the wrapping paper tended to decrease. Also, wrapping papers with too much filler content are inferior in high-speed winding characteristics of tobacco rods.

Next, based on the results of Table 2, a diagram was prepared by plotting the filler content on the horizontal axis and the discrimination score on the vertical axis for each basis weight (Fig. 7). From the results of FIG. 7, it was observed that the discrimination score tends to decrease as the basis weight decreases and as the filler content increases.

Next, the results in Table 2 are shown in Table 3 below, which summarizes the relationship between the filler content and basis weight and the discriminant score for easy understanding.

Based on the descriptions in FIG. 7 and Table 3, from the viewpoint of appearance impression, when the basis weight of the wrapping paper is 25 gsm or more and 35 gsm or less, the filler is preferably 15 to 45% by weight, and the basis weight exceeds 35 gsm to 45 gsm. It is found that 25 to 45% by weight of filler is desirable when: If the content of the filler is less than the lower limit of each of the above-mentioned basis weight ranges, the opacity is low, and when used as a wrapping paper, the notches of the contents tend to be seen through. Moreover, even if the basis weight and filler content are within the above ranges, it can be seen that those containing a combustion improver are not desirable from the viewpoint of appearance impression.

10 non-combustion heating smoking article 11 filler 12 first wrapping paper 13 second wrapping paper (tipping paper)
14 paper tube portion 15 filter portion 16 mouthpiece portion 17 hollow segment portion 20 electric heating device 21 battery unit 22 control unit 23 frame 24 heater member 25 heat transfer member 30 electric heating smoking system

Claims (8)

The discriminant score obtained by substituting the color difference values in the CIELab color system before and after heating at 230 ° C. for 3 minutes into the following formula (1) indicates a numerical value lower than 0 , and the ISO whiteness is 83% or more. A wrapping paper for a non-combustion heating smoking article having a white portion of
Discrimination score (y) y = -0.18 x ΔL ^* +0.08 x Δa ^* +0.13 x Δb ^* -2.36 (1)
(In formula (1), the color difference values in the CIELab color system before and after heating are obtained by subtracting the L ^* , a ^* , b ^* values before heating from the L ^* , a ^* , b ^* values after heating. ΔL ^* indicates the difference in lightness L ^* before and after heating the wrapping paper, and Δa ^* indicates the difference in chromaticity a ^* between after heating and before heating the wrapping paper. and Δb ^* is the difference in chromaticity b ^* between after heating the wrapping paper and before heating.) The wrapping paper for non-combustion heating smoking articles contains a filler, the filler content is 15 to 45% by weight, and the basis weight of the wrapping paper for non-combustion heating smoking articles is 25 to 45 gsm,
When the basis weight is 25 gsm or more and 35 gsm or less, the filler is 15 to 45% by weight,
2. The paper wrapper for non-combustion heating smoking articles of claim 1, wherein the filler is 25-45% by weight when the basis weight is greater than 35 gsm and less than or equal to 45 gsm. The wrapping paper for non-combustion heating smoking articles according to claim 1 or 2, having a tensile strength of 8 N/15 mm or more. 4. The wrapping paper for non-combustion heating smoking articles according to claim 2 or 3, wherein said filler is calcium carbonate and said wrapping paper has an opacity of 60% or more. The wrapping paper for non-combustion heating smoking articles according to any one of claims 1 to 4 , wherein said wrapping paper does not contain a combustion improver. A filler containing tobacco cuts and an aerosol-generating base material constitutes a tobacco rod portion wrapped with a first wrapping paper for wrapping the filler, and an end portion opposite to the tobacco rod portion. and a mouthpiece portion, wherein the tobacco rod portion and the mouthpiece portion are connected using a second wrapping paper that is the same as or different from the wrapping paper around which the filling is wrapped. A non-combustion heating smoking article, wherein at least one of the first wrapping paper and the second wrapping paper is the wrapping paper according to any one of claims 1 to 5 . An electric heating device comprising a heater member, a heat transfer member for transferring heat from the heater member, a battery unit serving as a power source for the heater member, and a control unit for controlling the heater member; and a non-combustion heating smoking article according to claim 6 fitted in contact with said heat transfer member. A method for determining whether a paper wrapper for a non-combustion heating smoking article undergoes unpleasant discoloration when heated during use, the method comprising the steps of:
A step of determining whether the discriminant score obtained by substituting the color difference values in the CIELab color system before and after heating at 230 ° C. for 3 minutes into the following formula (1) indicates a numerical value lower than 0. including
A method, wherein the wrapping paper has a white portion with an ISO whiteness of 83% or more.
Discrimination score (y) y = -0.18 × ΔL ^* +0.08×Δa ^* +0.13×Δb ^* -2.36 (1)
(In formula (1), the color difference value in the CIELab color system before and after heating is L ^* , a ^* , b ^* L before heating from the value ^* , a ^* , b ^* It is the value after subtracting the value. ΔL ^* is the lightness L before and after heating the wrapping paper ^* Δa ^* is the chromaticity a after heating the wrapping paper and before heating ^* Δb ^* is the chromaticity b ^* shows the difference between )

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