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WO2014148207A1 - Wrapping paper for cigarette - Google Patents

Wrapping paper for cigarette Download PDF

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Publication number
WO2014148207A1
WO2014148207A1 PCT/JP2014/054376 JP2014054376W WO2014148207A1 WO 2014148207 A1 WO2014148207 A1 WO 2014148207A1 JP 2014054376 W JP2014054376 W JP 2014054376W WO 2014148207 A1 WO2014148207 A1 WO 2014148207A1
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WO
WIPO (PCT)
Prior art keywords
cigarette
paper
cellulose
wrapping paper
average fiber
Prior art date
Application number
PCT/JP2014/054376
Other languages
French (fr)
Japanese (ja)
Inventor
なつ美 神谷
拓 日出島
石川 信幸
Original Assignee
日本たばこ産業株式会社
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Filing date
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Application filed by 日本たばこ産業株式会社 filed Critical 日本たばこ産業株式会社
Publication of WO2014148207A1 publication Critical patent/WO2014148207A1/en

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    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21HPULP 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
    • D21H27/00Special paper not otherwise provided for, e.g. made by multi-step processes
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21HPULP 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
    • D21H11/00Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
    • D21H11/16Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only modified by a particular after-treatment
    • D21H11/18Highly hydrated, swollen or fibrillatable fibres
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21HPULP 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
    • D21H15/00Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution
    • D21H15/02Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution characterised by configuration
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21HPULP 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
    • D21H17/00Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20Macromolecular organic compounds
    • D21H17/21Macromolecular organic compounds of natural origin; Derivatives thereof
    • D21H17/24Polysaccharides
    • D21H17/25Cellulose
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21HPULP 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
    • D21H19/00Coated paper; Coating material
    • D21H19/10Coatings without pigments
    • D21H19/14Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
    • D21H19/34Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising cellulose or derivatives thereof
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21HPULP 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
    • D21H21/00Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/50Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by form
    • D21H21/52Additives of definite length or shape

Definitions

  • the present invention relates to a cigarette paper.
  • Cigarette paper is one of the major factors that determine the burning rate of cigarettes. The burning speed has a great influence on the taste of cigarette and controls the number of smoking per cigarette. It is also known that cigarettes have self-extinguishing properties by making the burning rate of the cigarette paper less than a certain level.
  • Patent Document 1 describes a technique of providing a region called a RIP band on the surface of a cigarette wrapping paper in order to give the cigarette self-extinguishing properties. In such a technique, a film in which an alginate is dissolved as a film forming material is applied onto a wrapping paper, and then dried to form a film formed of the film generating material on the wrapping paper.
  • the film-forming material blocks the air holes present in the wrapping paper, thereby reducing the air permeability of the wrapping paper and lowering the flammability, thereby ensuring the self-extinguishing property of the cigarette using this wrapping paper.
  • Patent Document 3 a paper containing cellulose fibers (including fibrils and fine fibrils) is applied to a wrapping paper for a smoking article, and this is dried to have an area where the cellulose fibers are applied as a band. I am making it.
  • the addition level on the base sheet is about 0.5 to 10 g / m 2 in terms of dry weight of cellulose. And it is described that the base paper has such a region, so that the static burning rate in that region is reduced.
  • JP 2011-69040 A US Patent Application Publication No. 2011/0290436 Japanese Patent No. 3274892
  • the taste may be affected.
  • the size of the cellulose fine particles to be applied is 5 ⁇ m or less as the median diameter (d50) as described above.
  • d50 median diameter
  • those having a lateral dimension of 10 to 100 nm and a length of up to about 1 ⁇ m are used, in the examples, in addition to such cellulose, a material such as starch is also applied to the wrapping paper. Therefore, it is basically assumed that the coating agent applied to the wrapping paper in order to make the smoking article such as cigarette have self-extinguishing properties contains other than cellulose fine particles.
  • Patent Document 3 Although there is no specific description regarding the size of the cellulose fiber, it is known that the cellulon used therein has a diameter of 100 nm (see Non-Patent Document 1). In addition, it is expected that the fiber has a relatively large size in view of the amount of coating on the wrapping paper, which may cause inconvenience in production due to the large amount of coating. Moreover, in the thing of patent document 3, the aspect which contains binders like carboxymethylcellulose besides a cellulose fiber is also described. Thus, it can be said that there is room for improvement in the prior art that has been used to adjust the flammability of the wrapping paper and the self-digestibility of the cigarette.
  • an object of the present invention is to provide a cigarette wrapping paper in which the combustibility is efficiently reduced.
  • the present invention is as follows.
  • [1] A cigarette paper provided with cellulose nanofibers having an average fiber diameter of 50 nm or less and an average fiber length of 5 ⁇ m or more.
  • [2] The cigarette paper according to [1], wherein the amount of the cellulose nanofiber applied is 0.05 gsm or more and less than 0.5 gsm with respect to the application surface.
  • [3] The cigarette paper according to [1] or [2], wherein the cellulose nanofiber has an aspect ratio of 1000 to 10,000.
  • [4] The cigarette paper according to any one of [1] to [3], wherein the cellulose nanofibers are applied to the entire surface of the cigarette paper or in a band shape.
  • the combustibility of the cigarette paper can be efficiently reduced.
  • the base paper used as the base material used in the cigarette paper of the present invention is not particularly limited, and examples thereof include those using cellulose fiber paper as a material. More specific examples of such cellulose fiber paper include hemp or wood or a mixture thereof.
  • the wrapping paper may contain a filler.
  • An example of the filler is calcium carbonate.
  • the viewpoint that the wrapping paper can be stably produced, the viewpoint of maintaining the taste of the cigarette, and the basis weight of the wrapping paper used in the present invention include an embodiment in which the weight is 16 to 60 g / m 2 .
  • the basis weight can be adjusted by adjusting the content of the filler.
  • the air permeability of the base paper used for the cigarette paper of the present invention is not particularly limited, and can be widely used up to about 5 to 80 coresta units.
  • the air permeability referred to in the present invention refers to the flow rate of air permeated (permeated) per minute / cm 2 when air is passed from one side (2 cm 2 ) of paper under a constant pressure of 1 kPa.
  • cellulose nanofibers are imparted to the wrapping paper serving as a base material.
  • the cellulose nanofiber used in the present invention has an average fiber diameter of 50 nm or less and an average fiber length of 10 ⁇ m or more. When the average fiber diameter and the average fiber length are in such a range, the burning rate of the cigarette paper provided with the average fiber diameter can be efficiently reduced.
  • the average fiber diameter of the cellulose nanofiber is more preferably 40 nm or less, and further preferably 35 nm or less.
  • the average fiber diameter of a cellulose nanofiber is 5 nm or more normally, a 10 nm or more aspect is mentioned and the aspect which is 15 nm or more can be mentioned.
  • the average fiber length is usually 3000 ⁇ m or less. The aspect whose average fiber length is 1000 micrometers or less is mentioned, The aspect which is 300 micrometers or less can also be mentioned.
  • the average fiber length is 10 ⁇ m or more, more preferably 100 ⁇ m or more, and particularly preferably 150 ⁇ m or more.
  • the cellulose nanofiber used in the present invention does not substantially contain fibers having an average fiber diameter of micron order size.
  • the average fiber diameter and average fiber length of the cellulose nanofibers can be adjusted, for example, by adjusting the time for homogenization in the homogenization step in the cellulose nanofiber production method, About average fiber length, it can adjust by selecting the thing of average fiber length from which the average fiber length obtained becomes a desired thing as a raw material of the cellulose fiber used for a dispersion liquid preparation process.
  • the ratio of the average fiber length to the average fiber diameter (average fiber length / average fiber diameter) of the cellulose nanofiber is usually 1000 to 10,000, preferably 1500 to 10,000, more preferably 5000 to 10,000.
  • the effect of the present invention is further improved by using a fiber having a relatively large average fiber length as described above.
  • the cellulose nanofiber can be produced by a known method. For example, it can be obtained using the method described in JP 2011-26760 A.
  • the method described in the document includes a dispersion preparation step in which a raw material fiber is dispersed in a solvent to prepare a dispersion, and a homogenization step in which the dispersion is homogenized with a homogenizer equipped with a crushing type homovalve sheet.
  • the dispersion preparation step is a step of preparing a solution in which cellulose fibers that are raw materials are dispersed.
  • Cellulose fibers used as a raw material may be any of those derived from higher plants, those derived from animals, those chemically synthesized, and mixtures thereof.
  • pulp such as wood fibers and seed hair fibers derived from higher plants is preferable.
  • a pulp having no Such a raw material is dispersed (or suspended) in an appropriate solvent (for example, water or alcohol). This is subjected to a homogenization process using a homogenizer outlined in Japanese Patent Application Laid-Open No. 2011-26760.
  • the above manufacturing method may further include a refiner process as a pre-process before the homogenization process. By including such a step, it is possible to adjust the degree of the beating process of the raw material fibers to be subjected to the homogenization process.
  • the cigarette paper of the present invention is provided with the cellulose nanofiber.
  • the application amount is preferably 0.05 gsm (g / m 2 ) or more and less than 0.5 gsm, more preferably 0.06 gsm or more and less than 0.5 gsm with respect to the application surface.
  • the combustibility of the cigarette paper can be sufficiently reduced.
  • required of the cigarette paper can be ensured by providing a cellulose nanofiber to an application
  • cellulose nanofibers with a small diameter and a relatively long average fiber length even for a small amount of application, for cigarettes
  • the flammability of the web can be sufficiently reduced.
  • the cigarette paper of the present invention from the viewpoint of efficiently reducing the flammability of the cigarette paper, it is applied to the entire surface of the cigarette paper or in the form of a band as a place to apply the cellulose nanofibers in an application amount within the above range.
  • the width of the band is not particularly limited as long as it does not impair the effects of the present invention, is preferably 1 mm or more, preferably 3 mm or more, and preferably 5 mm or more.
  • the upper limit of the band width is usually 20 mm or less.
  • the interval is 10 to 30 mm.
  • the shape of the band is not particularly limited, and examples thereof include a wave form.
  • a slurry is prepared by dispersing the cellulose nanofibers in an appropriate solvent (for example, water or alcohol). Can be applied to the base paper and dried by an appropriate method.
  • a simple gravure coater may be used as an apparatus used for coating.
  • the coating amount of the cellulose nanofiber can be adjusted by performing not only once but also a plurality of coatings. In the present invention, when the coating amount is small as shown in the above range, the number of coatings can be reduced. Also, the drying process after coating can be performed in a short time since the coating liquid can be reduced.
  • the slurry examples include those obtained by adding cellulose nanofibers so as to be 0.2 to 1 part by weight with respect to 100 parts by weight of the solvent.
  • the location on the base paper when the cellulose nanofibers are applied is not particularly limited, and can be applied, for example, in the form of a band as described above. You may apply. In that case, it is preferable that the produced cigarette paper is adjusted and coated so as to have the above-mentioned preferable cellulose nanofiber application amount.
  • coating in the form of a band there is an embodiment in which the cigarette wrapping paper is coated so that two to three bands are formed.
  • the slurry containing the cellulose nanofibers does not contain an additive such as starch or carboxymethylcellulose. Can be achieved. Therefore, in the above production method, an embodiment in which additives other than cellulose nanofibers are not added to the slurry can be preferably exemplified. As a result, it is possible to obtain a cigarette wrapping paper that does not contain additives other than the base paper and cellulose nanofibers. As a result, unnecessary materials are not used in the manufacture of the cigarette wrapping paper, and the cost can be reduced. In addition, the influence on the taste can be reduced.
  • the cigarette wrapping paper of the present invention can be wound with a cigarette in the same manner as in the case of ordinary wrapping paper except that the cellulose nanofiber as described above is applied.
  • the self-extinguishing rate of the cigarette can be adjusted to a desired value by appropriately adjusting not only the amount of cellulose nanofiber applied but also the type of cigarette used, the air flow rate and basis weight of the base paper.
  • cigarette cuts, base papers, etc. are not particularly limited as described above, and cigarettes can be obtained by using commonly used cigarette manufacturing methods. Can be produced.
  • Example 1 Cellulose nanofibers (average fiber diameter: 29 nm, average fiber length: 158 ⁇ m; equivalent to Example 1 described in JP 2011-26760 A) are dispersed in water so as to be 0.2% by weight, and cellulose nanofibers A slurry having a viscosity (viscosity: 7.8 mPa ⁇ S) was prepared. Using a simple gravure coater, this was coated on the entire surface of a base paper (cellulose paper: basis weight 23.96 gsm) serving as a wrapping paper base material. The coating speed was 4 m / min. This coating operation was repeated until the desired coating amount was achieved. After the coating, drying was performed using 90-95 ° C. as the heater condition, and cigarette paper was obtained with each coating amount.
  • a base paper cellulose paper: basis weight 23.96 gsm
  • ⁇ Comparative Example 1> Cellulose fibers were dispersed in water so that cellulose fibers (average fiber diameter: 247.5 nm, average fiber length 340 ⁇ m; equivalent to Comparative Example 3 described in JP 2011-26760 A) were 0.2% by weight. The slurry which has was produced. Then, the cigarette paper was obtained with the coating amount shown in Table 1 by coating it on the entire surface of the cigarette paper in the same procedure as in Example 1.
  • ⁇ Comparative example 2> A fine cellulose fiber (average fiber diameter: 29 nm, average fiber length of 50 ⁇ m or less) obtained from Daicel Corporation was dispersed in water so as to be 0.2% by weight to prepare a slurry having cellulose fibers. Then, the cigarette paper was obtained with the coating amount shown in Table 1 by coating it on the entire surface of the cigarette paper in the same procedure as in Example 1.
  • the amount of cellulose nanofiber applied was calculated by the following method.
  • a base paper not provided with cellulose nanofibers and a wrapping paper provided with cellulose nanofibers were prepared. Wrapped paper of a certain length was put in an aluminum can and dried completely with an air dryer (at 110 ° C. for 1 hour or longer). Next, the wrapping paper was cooled in a desiccator, and then the weight of the aluminum can was measured. The wrapping paper was taken out, the weight of the empty aluminum can was measured, and the weight difference was defined as the wrapping paper weight. The weight difference between the wrapping paper provided with cellulose nanofibers and the wrapping paper not provided with cellulose nanofibers was defined as the weight of the cell nanofibers.

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  • Paper (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)

Abstract

Provided is a wrapping paper for a cigarette to be used for efficiently reducing the burning property of the cigarette. More specifically, provided is a wrapping paper for a cigarette to which cellulose nanofibers that have an average fiber diameter of 50 nm or less and an average fiber length of 10 μm or more are added.

Description

シガレット用巻紙Cigarette paper
 本発明は、シガレット用巻紙に関する。 The present invention relates to a cigarette paper.
 シガレット用巻紙は、シガレットの燃焼速度を決める大きな要因となる材料の一つである。燃焼速度は、シガレット香喫味への影響が大きい他、シガレットにおける1本当たりの喫煙回数を制御する。また、シガレット用巻紙の燃焼速度をある一定以下にすることで、シガレットが自己消火性を有するようになることが知られている。
 特許文献1には、シガレットに自己消火性を持たせるために、シガレット用巻紙の表面にRIPバンドと呼ばれる領域を設ける技術が記載されている。このような技術では、膜形成材料としてアルギン酸塩を溶解させた溶液を巻紙上に塗布し、その後乾燥させることで、膜生成材料により形成された膜を巻紙上に形成させている。この技術によれば、膜形成材料が巻紙に存在する空孔をふさぐことで、巻紙の通気度が低下して燃焼性が低下し、この巻紙を用いたシガレットの自己消火性を担保している。
Cigarette paper is one of the major factors that determine the burning rate of cigarettes. The burning speed has a great influence on the taste of cigarette and controls the number of smoking per cigarette. It is also known that cigarettes have self-extinguishing properties by making the burning rate of the cigarette paper less than a certain level.
Patent Document 1 describes a technique of providing a region called a RIP band on the surface of a cigarette wrapping paper in order to give the cigarette self-extinguishing properties. In such a technique, a film in which an alginate is dissolved as a film forming material is applied onto a wrapping paper, and then dried to form a film formed of the film generating material on the wrapping paper. According to this technique, the film-forming material blocks the air holes present in the wrapping paper, thereby reducing the air permeability of the wrapping paper and lowering the flammability, thereby ensuring the self-extinguishing property of the cigarette using this wrapping paper. .
 特許文献2に記載の発明では、シガレットに自己消火性を付与するために、シガレット用巻紙上にセルロース微粒子を分散させた溶液を塗布し、これを乾燥させることで巻紙上にRIP領域を設ける技術が記載されている。この技術で用いているナノ分散セルロース(NDC)の巻紙上への塗工量は、1.1~3.0g/m2であることが記載されている。また、当該技術では、ナノ分散セルロースに加え、デンプンも併用することが好ましい旨が記載されている。特許文献2に記載のセルロース微粒子は、メディアン径(d50)として5μm以下であることが記載されており、また、個々の繊維の横寸法は10~100nmであり、長さは1μm程度までのものが記載されている。 In the invention described in Patent Document 2, in order to impart self-extinguishing properties to cigarettes, a technique in which a solution in which cellulose fine particles are dispersed is applied onto a cigarette paper and dried to provide a RIP region on the paper. Is described. It is described that the amount of nano-dispersed cellulose (NDC) used in this technology is 1.1 to 3.0 g / m 2 on a wrapping paper. In addition, the technology describes that it is preferable to use starch in addition to nano-dispersed cellulose. The cellulose fine particles described in Patent Document 2 are described as having a median diameter (d50) of 5 μm or less, and each fiber has a lateral dimension of 10 to 100 nm and a length of up to about 1 μm. Is described.
 特許文献3には、喫煙物品用の巻紙にセルロース繊維(フィブリル、微細フィブリルを含む)を含むスラリーを塗工し、これを乾燥させることでセルロース繊維が塗工された区域をバンドとして有するものを作製している。このような巻紙では、基体シート上での添加水準がセルロースの乾燥重量で約0.5~10g/m2であることが記載されている。そして、基体紙がこのような領域を有することで、その領域の静的燃焼速度が低減したことが記載されている。 In Patent Document 3, a paper containing cellulose fibers (including fibrils and fine fibrils) is applied to a wrapping paper for a smoking article, and this is dried to have an area where the cellulose fibers are applied as a band. I am making it. In such wrapping paper, it is described that the addition level on the base sheet is about 0.5 to 10 g / m 2 in terms of dry weight of cellulose. And it is described that the base paper has such a region, so that the static burning rate in that region is reduced.
特開2011-69040号公報JP 2011-69040 A 米国特許出願公開第2011/0290436号明細書US Patent Application Publication No. 2011/0290436 特許第3274892号公報Japanese Patent No. 3274892
 上記特許文献1に記載の発明では、膜形成材料として、巻紙とは異なる材料を用いることから、喫味に影響を及ぼす可能性がある。
 上記特許文献2に記載の喫煙物品用の巻紙では、塗工させるセルロース微粒子のサイズとして、上記のようにメディアン径(d50)として5μm以下であることが記載されているほか、個々の微粒子の大きさとして、横寸法が10~100nmであり、長さが1μm程度までのものが用いられることが記載されているものの、実施例ではこのようなセルロースに加え、デンプンのような材料も巻紙に塗布しており、シガレットのような喫煙物品に自己消火性を持たせるために巻紙に塗工する塗工剤には、セルロース微粒子以外のものを含有させることを基本的に想定している。
 上記特許文献3に記載の発明では、セルロース繊維のサイズに関する具体的な記載はないものの、そこで用いられているセルロンについては、径が100nmであることが知られており(非特許文献1参照)、また巻紙へのその塗工量からみて、比較的大きいサイズを有する繊維であると予想され、その塗工量の多さによる製造上の不便さが生じる可能性がある。また特許文献3に記載のものでは、セルロース繊維以外にもカルボキシメチルセルロースのような結合剤を含ませる態様も記載されている。
 このように巻紙の燃焼性及びシガレットの自己消化性を調整するために用いられてきた先行技術については、改良の余地があると言える。
In the invention described in Patent Document 1, since a material different from the wrapping paper is used as the film forming material, the taste may be affected.
In the wrapping paper for smoking articles described in Patent Document 2, it is described that the size of the cellulose fine particles to be applied is 5 μm or less as the median diameter (d50) as described above. In addition, although it is described that those having a lateral dimension of 10 to 100 nm and a length of up to about 1 μm are used, in the examples, in addition to such cellulose, a material such as starch is also applied to the wrapping paper. Therefore, it is basically assumed that the coating agent applied to the wrapping paper in order to make the smoking article such as cigarette have self-extinguishing properties contains other than cellulose fine particles.
In the invention described in Patent Document 3, although there is no specific description regarding the size of the cellulose fiber, it is known that the cellulon used therein has a diameter of 100 nm (see Non-Patent Document 1). In addition, it is expected that the fiber has a relatively large size in view of the amount of coating on the wrapping paper, which may cause inconvenience in production due to the large amount of coating. Moreover, in the thing of patent document 3, the aspect which contains binders like carboxymethylcellulose besides a cellulose fiber is also described.
Thus, it can be said that there is room for improvement in the prior art that has been used to adjust the flammability of the wrapping paper and the self-digestibility of the cigarette.
 このようなことから、本発明では、燃焼性が効率よく低減されたシガレット用巻紙を提供することを課題とする。 Therefore, an object of the present invention is to provide a cigarette wrapping paper in which the combustibility is efficiently reduced.
 本発明者が鋭意検討した結果、シガレット用巻紙において、平均繊維径が50nm以下であり、平均繊維長が5μm以上のサイズを有するセルロースナノファイバーを巻紙の基材となる紙に付与した場合、上記課題を解決できることがわかり本発明に到達した。 As a result of intensive studies by the present inventor, in cigarette paper, when the cellulose nanofibers having an average fiber diameter of 50 nm or less and an average fiber length of 5 μm or more are applied to the paper serving as the base material of the paper roll, the above It has been found that the problem can be solved, and the present invention has been achieved.
 すなわち、本発明は、以下のとおりである。
[1] 平均繊維径が50nm以下、かつ平均繊維長が5μm以上のセルロースナノファイバーが付与されたシガレット用巻紙。
[2] 前記セルロースナノファイバーの付与量が付与面に対して、0.05gsm以上0.5gsm未満である、[1]に記載のシガレット用巻紙。
[3] 前記セルロースナノファイバーのアスペクト比が1000~10000である、[1]または[2]に記載のシガレット用巻紙。
[4] 前記セルロースナノファイバーが、シガレット用巻紙の全面に付与されているか、またはバンド状に付与されている、[1]~[3]のいずれかに記載のシガレット用巻紙。
[5] 前記セルロースナノファイバーの付与が、シガレット用巻紙の原紙に当該セルロースナノファイバーを含むスラリーを塗工することにより行われる、[1]~[4]のいずれかに記載のシガレット用巻紙。
[6] 前記スラリーに、セルロースナノファイバー以外の添加剤を含まない、[5]に記載のシガレット用巻紙。
[7] 前記平均繊維径が10nm以上であり、平均繊維長が3000μm以下である、[1]~[6]のいずれかに記載のシガレット用巻紙。
[8] [1]~[7]のいずれかに記載のシガレット用巻紙を用いたシガレット。
That is, the present invention is as follows.
[1] A cigarette paper provided with cellulose nanofibers having an average fiber diameter of 50 nm or less and an average fiber length of 5 μm or more.
[2] The cigarette paper according to [1], wherein the amount of the cellulose nanofiber applied is 0.05 gsm or more and less than 0.5 gsm with respect to the application surface.
[3] The cigarette paper according to [1] or [2], wherein the cellulose nanofiber has an aspect ratio of 1000 to 10,000.
[4] The cigarette paper according to any one of [1] to [3], wherein the cellulose nanofibers are applied to the entire surface of the cigarette paper or in a band shape.
[5] The cigarette paper according to any one of [1] to [4], wherein the cellulose nanofiber is applied by applying a slurry containing the cellulose nanofiber to a base paper of the cigarette paper.
[6] The cigarette paper according to [5], wherein the slurry does not contain additives other than cellulose nanofibers.
[7] The cigarette paper according to any one of [1] to [6], wherein the average fiber diameter is 10 nm or more and the average fiber length is 3000 μm or less.
[8] A cigarette using the cigarette paper according to any one of [1] to [7].
 本発明によれば、シガレット用巻紙の燃焼性を効率よく低減させることができる。 According to the present invention, the combustibility of the cigarette paper can be efficiently reduced.
シガレット用巻紙に塗工する各セルロース繊維の含有量と、そのシガレット用巻紙を用いたシガレットの燃焼速度の関係をロジスティック回帰分析により求めた結果を示す図である。It is a figure which shows the result of having calculated | required the relationship of content of each cellulose fiber applied to the cigarette paper, and the burning rate of the cigarette using the cigarette paper by logistic regression analysis.
 以下、本発明について実施形態及び例示物等を示して詳細に説明するが、本発明は以下の実施形態及び例示物等に限定されるものではなく、本発明の要旨を逸脱しない範囲において任意に変更して実施できる。 Hereinafter, the present invention will be described in detail with reference to embodiments, 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 present invention. Can be changed and implemented.
<巻紙>
 本発明のシガレット用巻紙に用いられる基材となる原紙としては、特に限定されるものではなく、材質としてセルロース繊維紙を用いたものを挙げることができる。そのようなセルロース繊維紙としてより具体的には、麻もしくは木材あるいはそれらの混合物を挙げることができる。
 また、巻紙は、填料を含有してもよい。
 填料としては炭酸カルシウムを例示することができる。
 なお、巻紙を安定的に生産できる観点や、シガレットの喫味を保つ観点と、本発明で用いる巻紙における坪量は、16~60g/m2である態様を挙げることができる。この坪量は、前記の填料の含有量を調整することによって調整可能である。
 なお、基材となる巻紙には、本発明の効果を損なわない範囲で他の添加剤を含有させてもよい。
<Wrapping paper>
The base paper used as the base material used in the cigarette paper of the present invention is not particularly limited, and examples thereof include those using cellulose fiber paper as a material. More specific examples of such cellulose fiber paper include hemp or wood or a mixture thereof.
The wrapping paper may contain a filler.
An example of the filler is calcium carbonate.
In addition, the viewpoint that the wrapping paper can be stably produced, the viewpoint of maintaining the taste of the cigarette, and the basis weight of the wrapping paper used in the present invention include an embodiment in which the weight is 16 to 60 g / m 2 . The basis weight can be adjusted by adjusting the content of the filler.
In addition, you may make the wrapping paper used as a base material contain another additive in the range which does not impair the effect of this invention.
 本発明のシガレット用巻紙に用いる原紙については、その通気度は特に限定されるものではなく、5~80コレスタ単位程度のものまで、幅広く用いることができる。本発明でいう通気度は、紙の片面(2cm2)から1kPaの一定圧力下で空気を通過させた際の、1分・1cm2あたりの通気(透過)した空気流量をいう。 The air permeability of the base paper used for the cigarette paper of the present invention is not particularly limited, and can be widely used up to about 5 to 80 coresta units. The air permeability referred to in the present invention refers to the flow rate of air permeated (permeated) per minute / cm 2 when air is passed from one side (2 cm 2 ) of paper under a constant pressure of 1 kPa.
<セルロースナノファイバー>
 本発明のシガレット用巻紙には、基材となる巻紙に、セルロースナノファイバーが付与されている。
 本発明で用いるセルロースナノファイバーはその平均繊維径が50nm以下であり、平均繊維長が10μm以上である。平均繊維径および平均繊維長がこのような範囲であることで、これを付与したシガレット用巻紙の燃焼速度を効率良く低減させることができる。
 セルロースナノファイバーの平均繊維径は、40nm以下であることがより好ましく、35nm以下であることがさらに好ましい。
 一方、セルロースナノファイバーの平均繊維径は、通常5nm以上であり、10nm以上の態様が挙げられ、15nm以上である態様を挙げることができる。
 一方、平均繊維長は、通常3000μm以下である。
 平均繊維長は、1000μm以下である態様が挙げられ、300μm以下である態様も挙げることができる。
 また、平均繊維長は、10μm以上であり、100μm以上であることがより好ましく、150μm以上であることが特に好ましい。
 なお、本発明において、前記平均繊維径、平均繊維長は、電子顕微鏡写真に基づいて測定した繊維径(n=20程度)と、繊維長(n=20程度)から算出した値である。
 本発明に用いられるセルロースナノファイバーには、ミクロンオーダーサイズの平均繊維径を有する繊維を実質的に含有しない。
 本発明において、セルロースナノファイバーの平均繊維径および平均繊維長は、例えば上記のセルロースナノファイバーの製造方法において、ホモジナイズ工程において、ホモジナイズ化を行う時間を調整することで平均繊維径を調整したり、平均繊維長については、分散液調製工程に用いるセルロース繊維の原料として、得られる平均繊維長が所望のものになるような平均繊維長のものを選択することで調整できる。
<Cellulose nanofiber>
In the cigarette wrapping paper of the present invention, cellulose nanofibers are imparted to the wrapping paper serving as a base material.
The cellulose nanofiber used in the present invention has an average fiber diameter of 50 nm or less and an average fiber length of 10 μm or more. When the average fiber diameter and the average fiber length are in such a range, the burning rate of the cigarette paper provided with the average fiber diameter can be efficiently reduced.
The average fiber diameter of the cellulose nanofiber is more preferably 40 nm or less, and further preferably 35 nm or less.
On the other hand, the average fiber diameter of a cellulose nanofiber is 5 nm or more normally, a 10 nm or more aspect is mentioned and the aspect which is 15 nm or more can be mentioned.
On the other hand, the average fiber length is usually 3000 μm or less.
The aspect whose average fiber length is 1000 micrometers or less is mentioned, The aspect which is 300 micrometers or less can also be mentioned.
The average fiber length is 10 μm or more, more preferably 100 μm or more, and particularly preferably 150 μm or more.
In the present invention, the average fiber diameter and the average fiber length are values calculated from a fiber diameter (n = 20 or so) measured based on an electron micrograph and a fiber length (n = 20 or so).
The cellulose nanofiber used in the present invention does not substantially contain fibers having an average fiber diameter of micron order size.
In the present invention, the average fiber diameter and average fiber length of the cellulose nanofibers can be adjusted, for example, by adjusting the time for homogenization in the homogenization step in the cellulose nanofiber production method, About average fiber length, it can adjust by selecting the thing of average fiber length from which the average fiber length obtained becomes a desired thing as a raw material of the cellulose fiber used for a dispersion liquid preparation process.
 本発明におけるセルロースナノファイバーの平均繊維径に対する平均繊維長の比(平均繊維長/平均繊維径)は通常1000~10000、好ましくは1500~10000、より好ましくは5000~10000である。上記のような比較的大きな平均繊維長のものを用いることで、本発明の効果がより向上する。 In the present invention, the ratio of the average fiber length to the average fiber diameter (average fiber length / average fiber diameter) of the cellulose nanofiber is usually 1000 to 10,000, preferably 1500 to 10,000, more preferably 5000 to 10,000. The effect of the present invention is further improved by using a fiber having a relatively large average fiber length as described above.
 前記セルロースナノファイバーは、公知の方法により作製することができる。例えば特開2011-26760号公報に記載の方法を用いて得ることができる。
 当該文献に記載の方法では、原料繊維を溶媒に分散させて分散液を調製する分散液調製工程、破砕型ホモバルブシートを備えたホモジナイザーで前記分散液をホモジナイズ処理するホモジナイズ工程を含む。
 前記分散液調製工程は、原料となるセルロース繊維を分散させた溶液を調製する工程である。原料とするセルロース繊維は、高等植物由来のもの、動物由来のもの、化学合成されたもののいずれを用いてもよく、これらの混合物であってもよい。
 これらの中でも、高等植物由来の木材繊維や種子毛繊維などのパルプを原料とする態様が好ましく、その中でも後述するホモジナイズ処理により均一なナノメータサイズの微小繊維を得る観点から、ネバードライパルプ(乾燥履歴のないパルプ)を用いることが好ましい。
 このような原料を適当な溶媒(例えば水やアルコール類)に分散(または懸濁)させる。
 これを上記の特開2011-26760号公報に概略が記載されているホモジナイザーを用いてホモジナイズ処理を行う。
 上記の製造方法には、さらにホモジナイズ工程の前に前工程としてリファイナー工程を含んでもよい。
 このような工程を含むことで、ホモジナイズ処理に供する原料繊維の叩解処理の度合いを調整することができる。
The cellulose nanofiber can be produced by a known method. For example, it can be obtained using the method described in JP 2011-26760 A.
The method described in the document includes a dispersion preparation step in which a raw material fiber is dispersed in a solvent to prepare a dispersion, and a homogenization step in which the dispersion is homogenized with a homogenizer equipped with a crushing type homovalve sheet.
The dispersion preparation step is a step of preparing a solution in which cellulose fibers that are raw materials are dispersed. Cellulose fibers used as a raw material may be any of those derived from higher plants, those derived from animals, those chemically synthesized, and mixtures thereof.
Among these, an embodiment using pulp such as wood fibers and seed hair fibers derived from higher plants is preferable. Among them, from the viewpoint of obtaining uniform nanometer-sized microfibers by homogenization treatment described later, never dry pulp (drying history) It is preferable to use a pulp having no.
Such a raw material is dispersed (or suspended) in an appropriate solvent (for example, water or alcohol).
This is subjected to a homogenization process using a homogenizer outlined in Japanese Patent Application Laid-Open No. 2011-26760.
The above manufacturing method may further include a refiner process as a pre-process before the homogenization process.
By including such a step, it is possible to adjust the degree of the beating process of the raw material fibers to be subjected to the homogenization process.
 本発明のシガレット用巻紙は、上記のセルロースナノファイバーが付与されているものである。その付与量は付与面に対して、0.05gsm(g/m2)以上0.5gsm未満であることが好ましく、0.06gsm以上0.5gsm未満であることがより好ましい。本発明では、セルロースナノファイバーの付与量が上記範囲で示されるように少ない場合でも、シガレット用巻紙の燃焼性を十分に低減させることができる。
 また、本発明のシガレット用巻紙では、0.25gsm以上0.5gsm未満でセルロースナノファイバーを付与面に付与することにより、シガレット用巻紙に要求される自己消火性を確保することができ、好ましい。
 先行技術とは異なり、従来まで用いられてきたセルロース粒子や径の大きいセルロースファイバー等ではなく、小さい径と、比較的長い平均繊維長を有するセルロースナノファイバーを用いることで、少ない付与量でもシガレット用巻紙の燃焼性を十分に低減させるこができる。
 なお、本発明のシガレット用巻紙では、シガレット用巻紙の燃焼性の低減を効率よく行う観点から、上記範囲の付与量でセルロースナノファイバーを付与する場所として、シガレット用巻紙の全面あるいはバンド状に付与されていることが好ましい。バンド状になるようにセルロースナノファイバーを付与する場合、シガレット用巻紙の長軸方向に対して垂直にバンドが位置する態様が好ましく、バンドの数は1~4本である態様が挙げられ、2~3本の態様が好ましい。また、バンドの幅は本発明の効果を損なわない範囲であれば特に制限はなく、1mm以上であることが好ましく、3mm以上であることが好ましく、5mm以上であることが好ましい。一方、バンドの幅の上限については、通常、20mm以下である態様が挙げられる。また、バンドが複数本である場合、その間隔は10~30mmの態様が挙げられる。また、バンドの形状も特に制限はなく、波型の態様などもあげることができる。
The cigarette paper of the present invention is provided with the cellulose nanofiber. The application amount is preferably 0.05 gsm (g / m 2 ) or more and less than 0.5 gsm, more preferably 0.06 gsm or more and less than 0.5 gsm with respect to the application surface. In the present invention, even when the amount of cellulose nanofiber applied is small as shown in the above range, the combustibility of the cigarette paper can be sufficiently reduced.
Moreover, in the cigarette paper of this invention, the self-extinguishing property requested | required of the cigarette paper can be ensured by providing a cellulose nanofiber to an application | coating surface at 0.25 gsm or more and less than 0.5 gsm, and is preferable.
Unlike the prior art, instead of cellulose particles and large-sized cellulose fibers that have been used up to now, by using cellulose nanofibers with a small diameter and a relatively long average fiber length, even for a small amount of application, for cigarettes The flammability of the web can be sufficiently reduced.
In addition, in the cigarette paper of the present invention, from the viewpoint of efficiently reducing the flammability of the cigarette paper, it is applied to the entire surface of the cigarette paper or in the form of a band as a place to apply the cellulose nanofibers in an application amount within the above range. It is preferable that When cellulose nanofibers are applied so as to form a band, an embodiment in which the bands are positioned perpendicular to the long axis direction of the cigarette wrapping paper is preferable, and an embodiment in which the number of bands is 1 to 4 is mentioned. Up to 3 embodiments are preferred. The width of the band is not particularly limited as long as it does not impair the effects of the present invention, is preferably 1 mm or more, preferably 3 mm or more, and preferably 5 mm or more. On the other hand, the upper limit of the band width is usually 20 mm or less. In addition, when there are a plurality of bands, the interval is 10 to 30 mm. Further, the shape of the band is not particularly limited, and examples thereof include a wave form.
 本発明のシガレット用巻紙の作製において、上記セルロースナノファイバーを原紙に付与する方法としては、上記のセルロースナノファイバーを適当な溶媒(例えば水やアルコールなど)に分散してスラリーを調製し、そのスラリーを原紙上に塗工して適当な方法で乾燥させる方法を挙げることができる。
 塗工する際に用いる装置としては簡易型グラビアコーターなどを挙げることができる。塗工は一度だけでなく、複数行うことで、セルロースナノファイバーの塗工量を調整することもできる。
 また、本発明では、上記範囲で示されるように塗工量が少ない場合、その塗工回数を少なくすることが可能となる。また、塗工後の乾燥工程も塗工液を少なくできることから、短時間で行うことができる。
 上記のスラリーとしては、通常、溶媒100重量部に対して、0.2~1重量部となるようにセルロースナノファイバーを加えて得たものが挙げられる。
 なお、本発明のシガレット用巻紙の作製において、セルロースナノファイバーを塗工する際の原紙上の場所については特に制限されることはなく、上記のように例えばバンド状に塗工したり、全面に塗工してもよい。その際、作製したシガレット用巻紙が、上記の好ましいセルロースナノファイバーの付与量を有するように調整して塗工することが好ましい。
 バンド状に塗工する場合は、シガレット用巻紙に2~3本のバンドができるように塗工する態様が挙げられる。
In the production of the cigarette paper according to the present invention, as a method for imparting the cellulose nanofibers to the base paper, a slurry is prepared by dispersing the cellulose nanofibers in an appropriate solvent (for example, water or alcohol). Can be applied to the base paper and dried by an appropriate method.
A simple gravure coater may be used as an apparatus used for coating. The coating amount of the cellulose nanofiber can be adjusted by performing not only once but also a plurality of coatings.
In the present invention, when the coating amount is small as shown in the above range, the number of coatings can be reduced. Also, the drying process after coating can be performed in a short time since the coating liquid can be reduced.
Examples of the slurry include those obtained by adding cellulose nanofibers so as to be 0.2 to 1 part by weight with respect to 100 parts by weight of the solvent.
In addition, in the production of the cigarette paper of the present invention, the location on the base paper when the cellulose nanofibers are applied is not particularly limited, and can be applied, for example, in the form of a band as described above. You may apply. In that case, it is preferable that the produced cigarette paper is adjusted and coated so as to have the above-mentioned preferable cellulose nanofiber application amount.
In the case of coating in the form of a band, there is an embodiment in which the cigarette wrapping paper is coated so that two to three bands are formed.
 本発明のシガレット用巻紙の作製において、上記のセルロースナノファイバーを含むスラリーには、先行技術とは異なり、デンプンやカルボキシメチルセルロースのような添加剤を含ませなくても、本発明の所期の目的を達成することができる。
 したがって、上記の製造方法において、上記のスラリーにセルロースナノファイバー以外の添加剤を加えない態様を好ましく挙げることができる。また、その結果、得られるシガレット用巻紙において、原紙とセルロースナノファイバー以外の他の添加物は含まないものを得ることができる。
 これにより、シガレット用巻紙の製造において余計な材料を用いることがなくなり、低コスト化を図ることができる。また、喫味への影響も小さくすることが出来る。
In the preparation of the cigarette paper of the present invention, unlike the prior art, the slurry containing the cellulose nanofibers does not contain an additive such as starch or carboxymethylcellulose. Can be achieved.
Therefore, in the above production method, an embodiment in which additives other than cellulose nanofibers are not added to the slurry can be preferably exemplified. As a result, it is possible to obtain a cigarette wrapping paper that does not contain additives other than the base paper and cellulose nanofibers.
As a result, unnecessary materials are not used in the manufacture of the cigarette wrapping paper, and the cost can be reduced. In addition, the influence on the taste can be reduced.
 本発明のシガレット用巻紙は、上記のようなセルロースナノファイバーが付与されていることを除けば、通常の巻紙の場合と同様の方法によりたばこ刻みを巻装することができる。この際、セルロースナノファイバーの付与量だけでなく、用いるたばこ刻みの種類や、原紙の通気量や坪量を適宜調整することで、シガレットの自己消火率を所望のものに調整することができる。
 本発明のシガレット用巻紙を用いること以外は、たばこ刻みや原紙等については上記のように特に制限されるものではなく、通常用いられているものを用い、公知のシガレット製造方法を用いることでシガレットを作製することができる。
The cigarette wrapping paper of the present invention can be wound with a cigarette in the same manner as in the case of ordinary wrapping paper except that the cellulose nanofiber as described above is applied. In this case, the self-extinguishing rate of the cigarette can be adjusted to a desired value by appropriately adjusting not only the amount of cellulose nanofiber applied but also the type of cigarette used, the air flow rate and basis weight of the base paper.
Except for using the cigarette wrapping paper of the present invention, cigarette cuts, base papers, etc. are not particularly limited as described above, and cigarettes can be obtained by using commonly used cigarette manufacturing methods. Can be produced.
 本発明を実施例によって更に具体的に説明するが、本発明はその要旨を超えない限り、以下の実施例の記載に限定されるものではない。
 以下、本発明を実施例によって、さらに具体的に説明するが、本発明はその要旨を超えない限り、以下の実施例の記載に限定されるものではない。
Examples The present invention will be described more specifically with reference to examples. However, the present invention is not limited to the description of the following examples unless it exceeds the gist.
EXAMPLES Hereinafter, the present invention will be described more specifically with reference to examples. However, the present invention is not limited to the description of the following examples unless it exceeds the gist.
<実施例1>
 セルロースナノファイバー(平均繊維径:29nm、平均繊維長:158μm;特開2011-26760号公報に記載の実施例1に相当)が0.2重量%になるように水に分散させてセルロースナノファイバーを有するスラリー(粘度:7.8mPa・S)を作製した。
 これを簡易型グラビアコーターを用いて、巻紙の基材となる原紙(セルロース紙:坪量23.96gsm)の全面に塗工を行った。塗工速度は4m/min.とした。この塗工操作を、所望の塗工量となるまで繰り返した。
 塗工を行った後、ヒーター条件として90-95℃を用いて乾燥させ、シガレット用巻紙をそれぞれの塗工量で得た。
<Example 1>
Cellulose nanofibers (average fiber diameter: 29 nm, average fiber length: 158 μm; equivalent to Example 1 described in JP 2011-26760 A) are dispersed in water so as to be 0.2% by weight, and cellulose nanofibers A slurry having a viscosity (viscosity: 7.8 mPa · S) was prepared.
Using a simple gravure coater, this was coated on the entire surface of a base paper (cellulose paper: basis weight 23.96 gsm) serving as a wrapping paper base material. The coating speed was 4 m / min. This coating operation was repeated until the desired coating amount was achieved.
After the coating, drying was performed using 90-95 ° C. as the heater condition, and cigarette paper was obtained with each coating amount.
<比較例1>
 セルロースファイバー(平均繊維径:247.5nm、平均繊維長340μm;特開2011-26760号公報に記載の比較例3に相当)が0.2重量%になるように水に分散させてセルロースファイバーを有するスラリーを作製した。その後、実施例1と同様の手順でシガレット用巻紙の全面にそれを塗工することで、表1に記載の塗工量でシガレット用巻紙を得た。
<Comparative Example 1>
Cellulose fibers were dispersed in water so that cellulose fibers (average fiber diameter: 247.5 nm, average fiber length 340 μm; equivalent to Comparative Example 3 described in JP 2011-26760 A) were 0.2% by weight. The slurry which has was produced. Then, the cigarette paper was obtained with the coating amount shown in Table 1 by coating it on the entire surface of the cigarette paper in the same procedure as in Example 1.
<比較例2>
 株式会社ダイセルより入手した微細セルロースファイバー(平均繊維径:29nm、平均繊維長50μm以下)が0.2重量%になるように水に分散させてセルロースファイバーを有するスラリーを作製した。その後、実施例1と同様の手順でシガレット用巻紙の全面にそれを塗工することで、表1に記載の塗工量でシガレット用巻紙を得た。
<Comparative example 2>
A fine cellulose fiber (average fiber diameter: 29 nm, average fiber length of 50 μm or less) obtained from Daicel Corporation was dispersed in water so as to be 0.2% by weight to prepare a slurry having cellulose fibers. Then, the cigarette paper was obtained with the coating amount shown in Table 1 by coating it on the entire surface of the cigarette paper in the same procedure as in Example 1.
<セルロースナノファイバーの付与量の測定>
 シガレット用巻紙において、セルロースナノファイバーの付与量の算出は、以下の方法により行った。
 セルロースナノファイバーが付与されていない原紙と、セルロースナノファイバーが付与された巻紙を準備した。アルミ缶に一定長さの巻紙を入れ、気流乾燥機で絶乾させた(110℃で1時間以上)。次に巻紙をデシケーター内で冷却し、その後アルミ缶ごと重量測定を行った。巻紙を取出し、空のアルミ缶の重量測定を行い、重量差を巻紙重量とした。セルロースナノファイバーが付与された巻紙と付与されていない巻紙の重量差を、セルナノファイバーの重量とした。
<Measurement of applied amount of cellulose nanofiber>
In the cigarette paper, the amount of cellulose nanofiber applied was calculated by the following method.
A base paper not provided with cellulose nanofibers and a wrapping paper provided with cellulose nanofibers were prepared. Wrapped paper of a certain length was put in an aluminum can and dried completely with an air dryer (at 110 ° C. for 1 hour or longer). Next, the wrapping paper was cooled in a desiccator, and then the weight of the aluminum can was measured. The wrapping paper was taken out, the weight of the empty aluminum can was measured, and the weight difference was defined as the wrapping paper weight. The weight difference between the wrapping paper provided with cellulose nanofibers and the wrapping paper not provided with cellulose nanofibers was defined as the weight of the cell nanofibers.
<燃焼速度測定>
 上記実施例1並びに比較例1及び2で作製した巻紙を用いて、同一のたばこ刻を一定量充填したシガレットを作製し、調和した。
 上記のシガレット先端から15mm、45mmの位置に印をつけた。シガレットの先端に火をつけ、200±50mm/sの風速条件下で自然燃焼させた。燃焼がシガレット上の15mmから45mmまで進む時間を計測した。燃焼距離(30mm)を燃焼時間で割り、燃焼速度とした。
<Burning rate measurement>
Using the wrapping paper produced in Example 1 and Comparative Examples 1 and 2, cigarettes filled with a certain amount of the same cigarettes were produced and harmonized.
Marks were placed at positions of 15 mm and 45 mm from the tip of the cigarette. The tip of the cigarette was lit and allowed to burn spontaneously under a wind speed of 200 ± 50 mm / s. The time for combustion to progress from 15 mm to 45 mm on the cigarette was measured. The combustion distance (30 mm) was divided by the combustion time to obtain the combustion speed.
<自己消火率測定(ASTM(米国材料試験協会)E2187-02b法に準じて>
 上記実施例1並びに比較例1及び2で作製した巻紙を用いて、同一のたばこ刻を一定量充填したシガレットを作製し、調和した。
 シガレットの先端に火をつけ、着火が安定するまで(先端5mmの位置まで燃えるまで)自然燃焼させた。着火が安定したのち、シガレット先端から15mmの位置まで、チャンバー内で自然燃焼させた。燃焼が安定したら、シガレットを10枚重ねたろ紙上に置いた。その後、燃焼が途中で終わったものの本数を数え消火率を算出した。
<Self-extinguishing rate measurement (according to ASTM (American Society for Testing and Materials) E2187-02b method>
Using the wrapping paper produced in Example 1 and Comparative Examples 1 and 2, cigarettes filled with a certain amount of the same cigarettes were produced and harmonized.
The tip of the cigarette was lit and allowed to burn spontaneously until ignition was stabilized (until the tip reached 5 mm). After ignition was stabilized, it was spontaneously burned in the chamber from the tip of the cigarette to a position of 15 mm. When combustion was stabilized, 10 cigarettes were placed on the filter paper. Thereafter, the fire extinguishing rate was calculated by counting the number of those that ended in the middle.
 実施例1並びに比較例1及び2で得られた各巻紙を用いて得たシガレットについて、坪量および塗工量と合わせて上記の燃焼速度測定と自己消化率測定を行った結果を以下の表1に示す。 About the cigarette obtained using each wrapping paper obtained in Example 1 and Comparative Examples 1 and 2, the results of the above burning rate measurement and self-digestion rate measurement together with the basis weight and coating amount are shown in the following table. It is shown in 1.
Figure JPOXMLDOC01-appb-T000001
Figure JPOXMLDOC01-appb-T000001
 表1の結果に基づき、ロジスティック回帰分析を行い、各セルロースファイバーの塗工量とシガレットの燃焼速度との関係を調べた。結果を図1に示す。
 図1から明らかなように、本発明で用いるセルロースナノファイバーを付与した巻紙を用いたシガレットは、セルロースナノファイバーの添加量が少ない場合でも燃焼速度が効果的に減少していることが分かる。このことから、本発明のシガレット用巻紙は、効果的にシガレットの燃焼速度を低減できる。つまり、シガレットの燃焼性を効率よく調整できると言える。
Based on the results of Table 1, logistic regression analysis was performed to examine the relationship between the coating amount of each cellulose fiber and the burning rate of cigarette. The results are shown in FIG.
As is clear from FIG. 1, it is understood that the cigarette using the wrapping paper provided with the cellulose nanofibers used in the present invention has an effective reduction in the burning rate even when the amount of cellulose nanofibers added is small. From this, the cigarette paper of the present invention can effectively reduce the burning rate of the cigarette. That is, it can be said that the combustibility of a cigarette can be adjusted efficiently.

Claims (8)

  1.  平均繊維径が50nm以下、かつ平均繊維長が10μm以上のセルロースナノファイバーが付与されたシガレット用巻紙。 A cigarette paper provided with cellulose nanofibers having an average fiber diameter of 50 nm or less and an average fiber length of 10 μm or more.
  2.  前記セルロースナノファイバーの付与量が付与面に対して、0.05gsm以上0.5gsm未満である、請求項1に記載のシガレット用巻紙。 The cigarette wrapping paper according to claim 1, wherein the amount of the cellulose nanofiber applied is 0.05 gsm or more and less than 0.5 gsm with respect to the application surface.
  3.  前記セルロースナノファイバーのアスペクト比が1000~10000である、請求項1または2に記載のシガレット用巻紙。 The cigarette paper according to claim 1 or 2, wherein the cellulose nanofiber has an aspect ratio of 1000 to 10,000.
  4.  前記セルロースナノファイバーが、シガレット用巻紙の全面に付与されているか、またはバンド状に付与されている、請求項1~3のいずれか一項に記載のシガレット用巻紙。 The cigarette wrapping paper according to any one of claims 1 to 3, wherein the cellulose nanofibers are applied to the entire surface of the cigarette wrapping paper or in a band shape.
  5.  前記セルロースナノファイバーの付与が、シガレット用巻紙の原紙に当該セルロースナノファイバーを含むスラリーを塗工することにより行われる、請求項1~4のいずれか一項に記載のシガレット用巻紙。 The cigarette wrapping paper according to any one of claims 1 to 4, wherein the cellulose nanofiber is applied by applying a slurry containing the cellulose nanofiber to a base paper of the cigarette wrapping paper.
  6.  前記スラリーに、セルロースナノファイバー以外の添加剤を含まない、請求項5に記載のシガレット用巻紙。 The cigarette paper according to claim 5, wherein the slurry does not contain additives other than cellulose nanofibers.
  7.  前記平均繊維径が10nm以上であり、平均繊維長が3000μm以下である、請求項1~6のいずれか一項に記載のシガレット用巻紙。 The cigarette paper according to any one of claims 1 to 6, wherein the average fiber diameter is 10 nm or more and the average fiber length is 3000 µm or less.
  8.  請求項1~7のいずれか一項に記載のシガレット用巻紙を用いたシガレット。 A cigarette using the cigarette paper according to any one of claims 1 to 7.
PCT/JP2014/054376 2013-03-19 2014-02-24 Wrapping paper for cigarette WO2014148207A1 (en)

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TWI750160B (en) * 2017-03-31 2021-12-21 日商日本煙草產業股份有限公司 Paper for smoking article and smoking article
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JPH06316898A (en) * 1993-03-16 1994-11-15 Philip Morris Prod Inc Method and apparatus for manufacturing rolled paper for smoking article wound with band
JP2000514708A (en) * 1996-07-09 2000-11-07 フイリップ モーリス プロダクツ インコーポレイテッド Method and apparatus for applying a substance to a web
JP2011508833A (en) * 2007-12-31 2011-03-17 フィリップ・モーリス・プロダクツ・ソシエテ・アノニム Method and apparatus for making slit strip wrapping paper using moving orifice
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EP3597053A4 (en) * 2017-03-30 2020-09-16 Japan Tobacco Inc. Paper for smoking article and smoking article
US11632982B2 (en) 2017-03-30 2023-04-25 Japan Tobacco Inc. Paper for smoking article and smoking article

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