TW201422165A - Double wrapping paper cigarette - Google Patents

Abstract

This invention provides a cigarette that will not extinguish by itself in the state of cigarette static combustion while satisfying the criterion of low flame spread. Specifically, this invention provides a cigarette that has an outer wrapping paper and an inner wrapping paper for wrapping cut tobacco, the cut tobacco being wrapped in the wrapping papers, and a filter, wherein the outer wrapping paper and the inner wrapping paper respectively contain a combustion improver, and the outer wrapping paper has two or more band-like regions in which the diffusion coefficient is 0.012 to 0.040cm/s.

Description

Double paper cigarette

The present invention relates to rolled paper cigarettes, and more particularly to cigarettes wrapped in double roll paper.

Conventionally, as a technique for reducing the amount of sidestream smoke generated when a cigarette is burned, it is known that the double-rolled paper of the inner roll paper and the outer roll paper is wrapped with tobacco, and the calcium carbonate content of the inner roll paper is set to a specific amount, and further A technique in which the calcium carbonate content of the outer roll paper is a specific amount or more (for example, Patent Document 1).

In addition, as for the odor caused by the sidestream smoke generated when the cigarette is burned, a technique for reducing the odor has been developed, and it is known, for example, that the odor is reduced by including a lactone in the roll paper (for example, patent document) 2)

On the other hand, there is known a technique for preventing the burning of cigarettes to cloth furniture or the like, that is, to improve the low-sintering property, for example, it has been attempted to apply the additive in a strip shape on the roll paper of the wrapped tobacco to make the coating additive Since the diffusion coefficient is lowered, a low burn-through function is imparted (for example, Patent Document 3 and Patent Document 4).

In recent years, the control of low-burning cigarettes in foreign countries such as the United States has entered into force. For example, in the United States, cigarettes are required to be measured according to ASTM (American Society for Testing and Materials) E2187-04 specifications, etc. The (FLB rate) must meet a predetermined performance benchmark (eg, the FLB rate is less than 25% on 10 sheets of filter paper). A cigarette satisfying such a requirement is a belt formed by applying a combustion inhibitor to a roll paper, and such a belt is disposed so as to have a space in the direction of the cigarette axis.

Advanced technical literature

Patent Document 1: International Publication No. 2003/077688.

Patent Document 2: Japanese Patent No. 3184864.

Patent Document 3: U.S. Patent Application Publication No. 2007/246055.

Patent Document 4: International Publication No. 2008/115794.

The cigarettes described in each of the above-mentioned patent documents can achieve various purposes as described in the respective literatures. However, not only the characteristics described in the respective documents, but also the other functions of the cigarette are impaired when the characteristics are satisfied. For example, in order to achieve a low burnability criterion for cigarettes, the problem of the cigarette being extinguished in the static combustion state is caused by lowering the diffusion coefficient of the rolled paper. In view of such circumstances, an object of the present invention is to provide a cigarette which satisfies the characteristics described in the above prior art documents, specifically, which satisfies the low burn-through property standard and which has characteristics of not extinguishing in the static combustion state of the cigarette.

As a result of intensive research, the inventors of the present invention found that cigarettes that can achieve such a problem have a roll of paper and an inner roll for wrapping the tobacco filaments. Paper, a tobacco filament wrapped in the roll paper, and a filter, wherein the outer roll paper and the inner roll paper respectively contain a combustion improver, and the outer roll paper has two or more diffusion coefficients of 0.012 to 0.040 cm/s Striped area.

That is, the present invention is as follows.

[1] A cigarette comprising a roll of paper and an inner roll of paper other than a tobacco filament, a tobacco filament wrapped in the roll paper, and a filter, The outer roll paper and the inner roll paper respectively contain a combustion improver, and the outer roll paper has two strip-shaped regions having a diffusion coefficient of 0.012 to 0.040 cm/s.

[2] The cigarette according to [1], wherein the outer roll paper has a carpet surface and a mesh surface, and the strip-like region is disposed on a mesh surface of the outer roll paper.

[3] The cigarette according to [1] or [2] wherein the striated region is a region processed using a film forming material.

[4] The cigarette according to any one of [1] to [3] wherein the striated region has a diffusion coefficient of 0.012 to 0.022 cm/s.

[5] The cigarette according to any one of [1] to [4] wherein the strip-like region has a width of 4 to 8 mm and a stripe interval of 16 to 20 mm.

[6] The cigarette according to any one of [1] to [5] wherein the content of the oxidizer of the outer roll paper is 0.7 to 1.3% by weight based on the weight of the outer roll paper, and the aforementioned inner roll paper The oxidizer content is from 0.7 to 2.3% by weight relative to the weight of the inner roll.

[7] The cigarette according to any one of [1] to [6] wherein the outer roll paper has a basis weight of 24 to 28 g/m ² and the inner roll paper has a basis weight of 25.5 to 31.5. g/m ² .

[8] The cigarette according to any one of [1] to [7] wherein the outer roll paper has a gas permeability of 23 to 47 coresta units, and the aforementioned inner paper pass The gas is 16 to 28 Calesta units.

According to the present invention, it is possible to provide a cigarette which satisfies a low burn-through property and has low extinguishing performance.

1‧‧‧Tobacco filaments wrapped in double-rolled paper

2‧‧‧Filter

3‧‧‧Low-diffusion area

4‧‧‧Fitting Department

5‧‧‧ joints

6‧‧‧Roll paper

7‧‧‧Inside paper

8‧‧‧Mesh

9‧‧‧ blanket surface

10‧‧‧Mesh

11‧‧‧ blanket surface

12‧‧‧Tobacco filament

13‧‧‧Inside paper

14‧‧‧Low-diffusion area

15‧‧‧Roll paper

Figure 1 is a schematic view of a cigarette of the present invention.

Fig. 2 is a partial cross-sectional view taken along line L of the cigarette of Fig. 1.

Fig. 3 is an enlarged view of a portion P of Fig. 2.

Figure 4 is the result of logistic regression analysis of the diffusion coefficient and the full-length burn rate (FLB rate) / extinction rate.

First, before explaining the double-rolled cigarette (hereinafter referred to simply as a cigarette) relating to the present invention, the test regarding the ASTM specification is as follows.

The test is to self-ignite the cigarette ignited at its front end (ignition position) in the air. Subsequently, when the burning end of the cigarette reaches the line of 15 mm from the aforementioned ignition position, the cigarette is placed on the filter paper, and the test of the cigarette is started from this point of time. In this test, the FLR rate is the ratio of the total length of the cigarette after it has been tested for a predetermined number of cigarettes.

The present invention is not limited by the scope of the present invention, and the present invention is not limited by the scope of the present invention.

<outer roll paper>

The cigarette of the present invention has a double roll of paper for wrapping filament tobacco. By this configuration, the amount of sidestream smoke generated can be reduced.

Explain the outer roll paper.

The base material of the outer roll paper is not particularly limited as long as it is a user of a cigarette. It is particularly preferred to use cellulose fiber paper, and thus the cellulose fiber paper is more preferably made of hemp or wood or a mixture of such materials.

The thickness of the outer roll paper is usually from 33 to 53 μm.

Further, from the viewpoint of adjusting the burning speed of the cigarette to a suitable speed, the outer wrapping paper preferably contains a filler.

The filler can be exemplified by calcium carbonate.

Further, the basis weight of the outer roll paper used in the present invention is usually from 22 to 30 g/m ² , preferably from 23 to 29 g/m ² , from the viewpoint of stable production of the roll paper and maintaining the flavor of the cigarette. It is 24 to 28 g/m ² . The basis weight can be adjusted by adjusting the aforementioned filler content.

The outer roll paper of the present invention preferably contains a combustion improver for improving the flammability of the cigarette. Such a combustion improver can be exemplified by hydroxy acid. As such a hydroxy acid, citric acid, malic acid, tartaric acid may be used, and salts thereof such as a sodium salt or a potassium salt may also be used.

From the viewpoint of improving the low burn-through property by the presence of a region having a specific diffusion coefficient described later, and maintaining the combustion performance of the cigarette appropriately, the combustion improver contains The amount is preferably from 0.4 to 1.6% by weight, more preferably from 0.6 to 1.5% by weight, particularly preferably from 0.7 to 1.3% by weight, based on the weight of the outer roll paper.

The roll paper used in the present invention preferably contains a material (hereinafter referred to as an odor reducing material) which reduces the odor generated by the cigarette sidestream. As the odor reducing material, those conventionally known can be used. For example, those described in JP-A No. 2-501075 can be preferably used.

For the odor reducing material, for example, those described in JP-A-2-501075 can be used.

Such an odor reducing material may, for example, be a glycoside containing an acetal of a carbohydrate and a fragrance.

The aforementioned carbohydrate is preferably a glycoside of a saccharide, more preferably a glucoside.

Examples of the above-mentioned aromatic agent include phenolic compounds such as vanillin, ethyl vanillin, methyl salicylate, eugenol, isoeugenol, thymol, and propenyl guaethol; maltol and B. Cyclic and acyclic enol compounds such as maltol, methylcyclopentenone and α-ketofuran; and cyclic and acyclic aliphatic alcohols such as menthol.

More specific examples of the odor reducing material are preferably vinyl vanillin glucoside.

The odor reducing material other than the above may be exemplified by (I) (a) octanal, (b) furfural and/or (c) furfural; (II) linalool described in JP-A-2002-142745; (III) fragrant celery ketone; (IV) (a) methyl ortho-aminobenzoate and/or (b) methyl N-methyl ortho-benzoate; (V) (a) Chinese orange aldehyde and / or b) Orange peel essential oil Chinese orange aldehyde part.

The weight ratio of such an odor reducing material in the outer wrapping paper is usually from 0.1 to 0.5% by weight, preferably from 0.2 to 0.4% by weight, whereby the odor caused by the sidestream smoke can be reduced.

The air permeability of the outer paper used in the cigarette of the present invention is preferably from 20 to 55, from the viewpoint of having a low burn-off property and a low extinguishing property of a cigarette having a low diffusibility region as described later. The Lestat unit, better for the 23 to 47 Koresta units.

Further, the air permeability of the outer roll paper can be adjusted, for example, by adjusting the amount of the filler such as calcium carbonate, the fiber length, the beating state of the fiber, and the like.

<inside paper>

The cigarette of the present invention has an inner roll paper as described above in addition to the outer roll paper.

The raw material used for the inner roll paper can be basically the same as that used for the outer roll paper. For example, the base material can be made of cellulose fiber paper, and the cellulose fiber paper can be exemplified by hemp or wood or a mixture of the same. .

The inner roll paper preferably contains a filler similar to the outer roll paper.

Such a filler can be exemplified by calcium carbonate.

Further, the basis weight of the inner roll paper used in the present invention is usually from 23 to 34 g/m ² , preferably from 24.5 to 33 g/m ² , from the viewpoint of stable production of the roll paper and maintaining the flavor of the cigarette. It is 25.5 to 31.5 g/m ² . The basis weight can be adjusted by adjusting the aforementioned filler content.

The thickness of the inner roll paper is usually from 37 to 57 μm.

The inner roll paper used in the present invention preferably contains a combustion-supporting agent for improving the combustibility of the cigarette as well as the outer roll paper, and such a combustion-supporting agent may be hydroxy acid.

The combustion improver content is preferably from 0.1 to 3.0% by weight, more preferably from 0.1 to 3.0% by weight, based on the weight of the inner roll, from the viewpoint of improving the low burn-through property by the presence of a region having a specific diffusion coefficient to be described later while appropriately maintaining the burning property of the cigarette. It is preferably from 0.3 to 2.7% by weight, particularly preferably from 0.7 to 2.3% by weight.

The inner roll paper used in the present invention preferably contains a gray astringent for reducing sidestream smoke. Such a gray astringent is not particularly limited as long as it can reduce sidestream smoke. Specific examples of the gray astringent agent include magnesium hydroxide or potassium chloride, and one or both of them may be used.

From the standpoint of maintaining proper burning properties of the cigarette, the content of the gray astringent in the inner paper is usually from 3.5 to 20% by weight of the inner paper.

The air permeability of the inner paper used in the cigarette of the present invention is preferably from 13 to 31 from the viewpoint of the low burn-off property and the low extinguishing property of the cigarette, which is the balance of the existence of the low diffusibility region described later. The Lestat unit, preferably 16 to 28 Calesta units.

Further, the air permeability of the inner roll paper can be adjusted, for example, by adjusting the amount of the filler such as calcium carbonate, the fiber length, the beating state of the fiber, and the like.

<Configuration of outer roll paper and inner roll paper>

In the cigarette of the present invention, as described above, two rolls of outer roll paper and inner roll paper are used as the roll paper for wrapping the cigarette. Cigarette roll paper has a carpet surface and a mesh surface as a reference for forming its surface and inner surface.

In the manufacture of cigarettes, it is more common to use a carpet surface as the outer side of the cigarette. The surface and the mesh surface are arranged to be wrapped as a surface in contact with the tobacco filament.

In the cigarette of the present invention, it is preferable that the outer surface of the rolled paper is disposed toward the outer side of the cigarette, and the web surface of the inner rolled paper is placed in contact with the tobacco filament. In particular, with regard to the outer wrapping paper, since the carpet surface is smooth and the appearance is beautiful, at least the outer wrapping paper is preferably disposed in such a manner that the carpet surface faces the outer side of the cigarette as shown in Fig. 3.

In addition, the packaging method of the outer roll paper and the inner roll paper is preferably exemplified as shown in FIG. 3, and the tobacco filament is wound in such a manner that the two ends of the inner roll paper are joined to each other, and the outer paper roll wraps the outer circumference. And the method of bonding and fixing the overlapping portions of the outer paper ends.

<low diffusion area>

As described above, in the cigarette of the present invention, at least the outer wrapping paper contains a region having a specific diffusion coefficient in a specific state.

The above diffusion coefficient is preferably from 0.012 to 0.040 cm/s, particularly preferably from 0.012 to 0.022 cm/s, from the viewpoint of ensuring low flame retardancy and preventing extinction.

The means for providing such a diffusion region may be a method of forming a film on a roll paper by applying and drying a film forming material described later, or a method of providing a cellulose fiber or the like on a roll paper. When a method of forming a film on a roll paper to form a low diffusion region by coating and drying the film forming material is used, the diffusion coefficient can be adjusted to a specific range by appropriately adjusting the thickness of the film or the like.

Here, when the film forming material is used to reduce the diffusion coefficient of the region in the roll paper, the amount of the film forming material used is large, and the amount of the film forming material used when the diffusion coefficient is increased is small.

The thickness of the film can generally be from 0.07 to 2.0 μm.

Further, the diffusion coefficient can be measured using CO ₂ or N ₂ as a gas, and a Diffusivity Tester is used as a measuring device in a state where no pressure loss occurs in the roll paper as a sample. Diffusivity Tester can be used with Borgwaldt products and can be measured according to the instructions issued by Borgwaldt.

A specific method of providing a region having a specific diffusion coefficient in the outer roll paper is as shown in FIG. 3, in which the outer surface of the outer surface of the cigarette and the web surface of the inner roll paper are connected to the tobacco filament on the outer surface of the outer paper roll. In the configuration, the surface of the outer roll paper or the inner surface of the inner roll paper is processed by the film forming material. Further, in order to facilitate understanding, FIG. 3 is shown in the form of a film on the web surface of the outer roll paper, but the film forming material is impregnated with the roll paper and has a low diffusion region, and is also included in the aspect of the invention. .

In addition, not only the outer roll paper, but also the outer roll paper, the low-diffusion area is also set on the inner surface of the inner roll paper.

Among these, in particular, in order to enhance the low-burning function, it is preferred to carry out the processing of the film forming material on the web surface of the outer roll paper. The processing of setting the low diffusion area on the outer surface of the outer roll paper may impair the appearance and may cause damage to the place during manufacture.

<Film forming material>

In the cigarette of the present invention, as a method of processing at least the outer wrapping paper and reducing the diffusion coefficient of the processed portion to a specific range, processing using a film forming material can be mentioned. As such a film forming material, a known one may be used, and examples thereof include alginic acid and a salt thereof (for example, a sodium salt), pectin, and polyvinyl alcohol. Cellulose derivatives such as ethyl cellulose, methyl cellulose and carboxymethyl cellulose, starch or derivatives thereof (e.g., carboxymethyl starch, ether derivatives such as hydroxyalkyl starch and cationic starch, acetic acid) Esters of starch, starch phosphate and octenyl succinate starch).

These film forming materials can be usually used in an aqueous solution of 1.0 to 30.0% by weight, and can be applied by printing such an aqueous solution on the surface of the roll paper by a suitable printing method such as gravure printing.

After coating, drying is carried out by a known appropriate method to form a film composed of the above materials at a specific portion on the roll paper.

Further, the coating amount of the film forming material is as described above, and can be appropriately adjusted so that the diffusion coefficient of the coated paper roll is within the range obtained.

Further, the coating shape is a stripe shape as shown in Fig. 1 from the viewpoint of coating by the above-described printing method.

The width of the strip is usually from 4 to 8 mm, more preferably from 5 to 7 mm, from the viewpoint of both combustibility and low burnability, and the interval (the length from one end of one strip to one end of the adjacent strip) is usually It is 16 to 20 mm, preferably 17 to 19 mm.

Further, from the viewpoint of ensuring low burn-through property, the number of bands in the cigarette is preferably two or more. The manufacturing restrictions are usually two. The "width" or "interval" as used in the present invention means the length in the longitudinal direction of the cigarette.

Further, the strip-shaped coating region is not limited to a linear strip shape, and may be formed into other shapes without departing from the effects of the present invention. For example, the strip pattern may form a wave pattern, and is not particularly limited.

In the cigarette of the present invention, in addition to the two types of the above-mentioned specific roll paper, a known tobacco filament can be used as a material, and the filling amount of the tobacco filament can be filled in an amount of usually 0.1 to 0.9 g/cm ³ . Further, as the filter, a known acetate filter or the like can also be used. Further, the method of wrapping a cigarette may be a well-known method when two rolls of paper are used.

Example

The present invention will be more specifically described by the examples, but the present invention is not limited to the description of the examples below, without departing from the scope of the invention.

In the following, the present invention will be specifically described by the examples, but the present invention is not limited to the description of the following examples without departing from the scope of the invention.

<Comparative Examples 1 to 6>

First, an inner roll paper and an outer roll paper having the compositions shown in the following Tables 1 and 2 were produced. The thickness of the inner roll paper is about 47 μm, and the thickness of the outer roll paper is about 43 μm. The film forming material (aqueous starch solution) was applied to the inner roll paper 2 and the outer roll paper 4 by a printing method and dried, and a strip-shaped low diffusion region having a width of 6 mm was provided on the web surface of the roll paper at intervals of 18 mm. The film thickness is about 0.1 to 1 μm. Two strips of low-diffusion areas are provided on the outer roll paper.

These base papers are all cellulose fiber papers containing calcium carbonate as a filler, citric acid as a combustion improver, and ethyl vanillin glucoside as a sidestream smoke odor reducing agent (fragrance).

Further, the diffusion coefficient of the roll paper was measured using a Diffusivity Tester under the conditions of a temperature of 23 ° C and a humidity of 50%. The machine uses Borgwaldt products and the measurements are made according to the instructions issued by the company.

The rolls described in Tables 1 and 2 above were combined in the manner described in Table 3 and rolled into cigarettes. The cigarette circumference 22.6mm system, to 0.19g / cm ³ density of packing of the filaments having a commercial American blend, and mounted with a filter by acetate. Further, the outer roll paper is disposed such that the carpet surface thereof becomes the outer side of the cigarette, and the inner roll paper is disposed such that the net surface thereof is in contact with the cigarette filament.

As shown in Table 3, in Comparative Example 1, the processing for applying the low diffusion region was not performed on the roll paper, so the FLB ratio was 100%. In Comparative Examples 2 and 3, the low-diffusion region was provided in the roll paper, but the arrangement was the web surface of the inner roll paper, so the FLB rate was high. In Comparative Examples 4 to 6, all of the low-diffusion regions were provided to the outer paper, but the FLB ratio was high due to the high diffusion coefficient, and the following criteria could not be achieved.

In the table, Puff is the number of times the cigarette has reached the amount of combustion of the reference, and is used as a performance benchmark for cigarettes. In summary, it is qualified at 6.5 or higher.

Further, the FLB ratio in the table indicates the burnability of the cigarette, and is preferably 20% or less, and particularly preferably 15% or less.

The extinction rate is as described above, and is a property opposite to the burning property of a cigarette. Generally, if the cigarette has a low burning property, the extinguishing rate is high.

Extinction is a negative situation in smoking, so it is hoped to reduce the rate of extinction.

The method of the cigarette analysis test project is as follows.

. Puff: according to ISO 3308: 2000 Routine analytical cigarette-smoking machine definitions and standard condition.

. FLB rate: according to ASTM: E2187-04 specifications.

. Extinction rate: A test that will extinguish itself when the cigarette is naturally burnt in the absence of wind, until the end of the combustion (the outer paper is partially burned out).

Extinction rate (%) = (extinguish count ÷ measurement count) × 100

<Example 1, Comparative Examples 7, 8>

For further review, paper rolls of the composition shown in Table 4 below were produced. Further, regarding the outer rolled papers 5, 6, and 7, the film forming material (aqueous starch solution) was applied and dried by a printing method, and the strip-shaped low-diffusion region having a width of 6 mm was placed on the web of the roll paper at intervals of 18 mm. . Two strips of low-diffusion areas are provided on the outer roll paper. The outer roll paper has a thickness of about 42 μm, and the low diffusion region has a film thickness of about 0.1 to 1 μm. Further, the diffusion coefficient of the roll paper was measured using a Diffusivity Tester under the conditions of a temperature of 23 ° C and a humidity of 50%. Diffusivity Tester uses Borgwaldt products and conducts the test according to the instructions issued by the company.

The outer papers described in Table 4 were combined with the inner papers shown in Table 1 in the manner described in Table 5, and cigarettes were produced in the same manner as in the above comparative examples. Further, the outer wrapping paper is disposed such that the carpet surface thereof is outside the cigarette, and the inner wrapping paper is disposed such that the web surface thereof is in contact with the cigarette filament. Each of the obtained cigarettes was subjected to the same test as the above Comparative Example. The results are shown in Table 5.

According to the results of the above examples and comparative examples, the relationship between the diffusion coefficient of the region processed by the film forming material and the FLB ratio and the extinction rate was analyzed by logistic regression analysis. The result is shown in Figure 4. From the results, it is understood that the optimum diffusion coefficient is as described in Table 6 as 0.012 to 0.022 cm/s, based on the FLB rate of 12.1%.

In addition, the analysis of logistic regression predicts an effective analytical method of generating probability.

(industrial availability)

The cigarette of the present invention cannot be obtained by simply combining the prior art, and has a low burn-off property in addition to reducing the sidestream smoke, and maintains an excellent function of low extinction. Further, according to a preferred aspect of the cigarette of the present invention, the sidestream smoke or the odor caused by the sidestream smoke can be reduced.

1‧‧‧Tobacco filaments wrapped in double-rolled paper

2‧‧‧Filter

3‧‧‧Low-diffusion area

Claims (8)

A cigarette comprising a roll of paper and an inner roll of a roll of tobacco filaments, a tobacco filament wrapped in the roll paper, and a filter, wherein the outer roll paper and the inner roll paper respectively contain a combustion improver, The outer roll paper has two strip-shaped regions having a diffusion coefficient of 0.012 to 0.040 cm/s. The cigarette according to claim 1, wherein the outer roll paper has a carpet surface and a mesh surface, and the strip-shaped region is disposed on a mesh surface of the outer roll paper. The cigarette according to claim 1 or 2, wherein the strip-like region is a region processed using a film forming material. The cigarette according to any one of claims 1 to 3, wherein the strip-like region has a diffusion coefficient of 0.012 to 0.022 cm/s. The cigarette according to any one of claims 1 to 4, wherein the strip-like region has a width of 4 to 8 mm and a stripe interval of 16 to 20 mm. The cigarette according to any one of claims 1 to 5, wherein the content of the oxidizer of the outer wrapping paper is 0.7 to 1.3% by weight based on the weight of the outer wrapping paper, and the content of the oxidizer of the inner wrapping paper is relatively The inner roll paper has a weight of 0.7 to 2.3% by weight. The cigarette according to any one of claims 1 to 6, wherein the outer roll paper has a basis weight of 24 to 28 g/m ² and the inner roll paper has a basis weight of 25.5 to 31.5 g/m ² . The cigarette according to any one of claims 1 to 7, wherein The outer roll paper has a gas permeability of 23 to 47 coresta units, and the inner roll paper has a gas permeability of 16 to 28 knots units.