TW201424610A - Double wrapping papers cigarette - Google Patents

Abstract

The present invention provides a cigarette, which can reduce generation amount of side stream of cigarette and satisfy criterion of low spread of flame, and has a characteristic of not extinguishing in midway in static combustion state of cigarette. Specifically, the present invention is a cigarette having an outer wrapping paper and an inner wrapping paper for wrapping cigarette shreds, the cigarette shreds wrapped by the wrapping papers, and a filter, wherein the outer wrapping paper contains a combustion improver with a content of 1.9 to 3.7 weight% relative to the weight of the outer wrapping paper, a basis weight of the outer wrapping paper is 58 to 67.5g/m<SP>2</SP>, a basis weight of the inner wrapping paper is 13 to 17g/m<SP>2</SP>, an air permeability of the outer wrapping paper is 6 to 14 CORESTA units, an air permeability of the inner wrapping paper is 13 to 27 CORESTA units, and the outer wrapping paper has two or more band-shaped regions having a diffusion coefficient of 0.045 to 0.075cm/s.

Description

Double roll of cigarette

The present invention relates to a rolled paper cigarette, and more particularly to a cigarette packaged in a double roll paper.

Conventionally, as a technique for reducing the amount of sidestream smoke generated when a cigarette is burned, a technique is known in which a double roll of paper of inner and outer rolls is wrapped with tobacco, and at the same time, calcium carbonate of the inner paper is wound. The content is set to be less than a specific amount, and the calcium carbonate content of the outer roll paper is contained in a specific amount or more (for example, Patent Document 1).

Further, a technique has been developed to reduce the odor generated from the sidestream smoke generated when the cigarette is burned. For example, it is known that the odor is reduced by including the 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 in cloth furniture or the like, that is, to improve the low-burning property, for example, it has been attempted to apply the additive to the roll paper of the packaged tobacco, thereby reducing the The low-burning function is imparted by applying a diffusion coefficient at the additive (for example, Patent Document 3 and Patent Document 4).

In recent years, in the United States and other foreign countries, the control of low-calorie cigarettes has taken effect. For example, American cigarettes carry out the following requirements: according to ASTM (US The full-scale combustion rate (FLB rate) measured and calculated by the E2187-04 specification of the National Laboratory Materials Association must meet the predetermined performance criteria (for example, the FLB rate is less than 25% on 10 sheets of filter paper). A cigarette that satisfies such a requirement is a belt formed by applying a combustion inhibitor to a roll paper, and such a band is disposed in the direction of the cigarette axis.

Prior technical literature Patent literature

[Patent Document 1] International Publication No. 2003/077688

[Patent Document 2] Japanese Patent No. 3184864

[Patent Document 3] U.S. Patent Application 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, it is not only the characteristics described in the respective documents, but also the problem of impairing other functions of the cigarette when the characteristics are satisfied. For example, when the low-burning property of the cigarette is to be achieved, the diffusion coefficient of the rolled paper is lowered, and there is a problem that the cigarette is extinguished in the middle of the static combustion state. 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, satisfies the low burnability criterion, and has a characteristic that it does not occur in the middle of the static combustion state of the cigarette. .

As a result of intensive studies, the inventors have found a cigarette that can achieve such a problem, and the above-mentioned roll paper of the cigarette contains a combustion improver in an amount of 1.9 to 3.7% by weight based on the weight of the outer roll paper, and the outer roll The paper has a basis weight of 58 to 67.5 g/m ² , the aforementioned inner roll has a basis weight of 13 to 17 g/m ² , and the outer roll paper has a gas permeability of 6 to 14 colesta units (Coresta The air permeability of the inner paper is 13 to 27 colesta units, and the outer paper has two or more strip-shaped regions having a diffusion coefficient of 0.045 to 0.075 cm/s.

That is, the present invention is as follows.

[1] A cigarette having a tobacco filament for wrapping a tobacco filament and an inner paper, a tobacco filament wrapped by the paper, and a filter, wherein the outer paper is The combustion-supporting agent is contained in an amount of 1.9 to 3.7% by weight based on the weight of the outer wrapping paper, the basis weight of the outer wrapping paper is 58 to 67.5 g/m ² , and the basis weight of the aforementioned inner wrapping paper is 13 to 17 g/ m ² , the outer roll paper has a gas permeability of 6 to 14 colesta units, the inner roll paper has a gas permeability of 13 to 27 colesta units, and the outer roll paper has two or more diffusion coefficients of 0.045. Striped area up to 0.075 cm/s.

[2] The cigarette according to [1], wherein the outer roll paper has a carpet surface and a mesh surface, and the strip-shaped region is disposed on a carpet 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 region processed using the film forming material has a diffusion coefficient of 0.050 to 0.071 cm/s.

[5] The cigarette according to any one of [1] to [4] wherein the strip-like region is 4 to 8 mm in width and the interval between the strips is 16 to 20 mm.

According to the present invention, it is possible to provide a cigarette which has a reduced amount of sidestream smoke and which has low burn-in property and also has low mid-range extinguishing performance.

1‧‧‧Tobacco filaments made from double-rolled rolls

2‧‧‧Filter

3‧‧‧Low-diffusion area

4‧‧‧Fitting Department

5‧‧‧Intersecting Department

6‧‧‧Roll paper

7‧‧‧Inside paper

8‧‧‧Mesh

9‧‧‧ blanket surface

10‧‧‧ blanket surface

11‧‧‧ mesh

12‧‧‧Tobacco filament

13‧‧‧Inside paper

14‧‧‧Low-diffusion area

15‧‧‧Roll paper

Fig. 1 is a schematic view showing a cigarette of the present invention.

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

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

First, before explaining the double-rolled cigarette (hereinafter referred to simply as cigarette) of the present invention, the following description will be made regarding the test according to the ASTM specification.

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 FLB rate is the ratio of cigarettes burning throughout their entire length after testing a predetermined number of cigarettes.

The present invention will be described in detail below with reference to the embodiments and examples, and the present invention is not limited by the following embodiments and examples, and may be arbitrarily changed without departing from the scope of the invention. Shi.

<outer roll paper>

The cigarette of the present invention has a double roll paper for winding tobacco filaments. Explain the outer roll paper in it. With such a configuration, the amount of sidestream smoke generated can be reduced.

The base material of the outer roll paper is not particularly limited as long as it is a user of a cigarette. In particular, it is preferred to use cellulose fiber paper, more specifically such that it is composed of hemp or wood or a mixture of such materials.

The thickness of the outer roll paper is usually from 55 to 75 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 paper used in the present invention is from 53.5 to 72 g/m ² from the viewpoint of stably producing the roll paper, from the viewpoint of maintaining the flavor of the cigarette, and from the viewpoint of reducing the sidestream smoke. It is preferably 56 to 70 g/m ² , particularly preferably 58 to 67.5 g/m ² . The basis weight can be adjusted by adjusting the content of the aforementioned filler.

In order to improve the combustibility of the cigarette, the outer roll paper of the present invention preferably contains a combustion improver. Such a combustion improver can be exemplified by a hydroxy acid. As the hydroxy acid, citric acid, malic acid, tartaric acid, and the like, such as a sodium salt or a potassium salt, may be used.

By the presence of a region having a specific diffusion coefficient to be described later, the low burn-in property is improved, and at the same time, the combustibility of the cigarette can be suitably maintained. The content of the flammable agent is 1.9 to 3.7% by weight with respect to the weight of the outer roll paper, preferably 2.3 to 3.5% by weight, particularly preferably 2.5 to 3.3% by weight.

The roll paper other than the one used in the present invention is preferably a material containing a material which reduces the odor caused by the sidestream smoke of the cigarette (hereinafter also referred to as a material for reducing odor). As a material for reducing the odor, a lactone-based compound described in JP-A-2009-179711 can be used, and specific examples thereof include α-angelica lactone (α-angelica). Lactone), 3-butylidene lactone, γ-butyrolactone, δ-decalactone, γ-decalactone, δ-dodecanolactone, γ-dodecanolactone, δ-heptanolactone , γ-heptanolactone, δ-caprolactone, γ-caprolactone, jasmolactone, β-methyl-γ-octanolactone, mentholactone, δ-decalactone, γ-壬Lactone, δ-octanolactone, γ-octanolactone, 3-propylene azlactone, δ-undecalactone, γ-undecalactone, δ-valerolactone, γ-pentane These ester hydroxy acid salts can also be used for esters and the like.

More specific examples of the odor reducing material may be exemplified by the hydroxy acid salt of γ-undecalactone.

(I) (a) octanal, (b) furfural, and/or (c) furfural, (II), which are described in JP-A-2002-142745. Linalol, (III) carvone, (IV) (a) methyl anthranilate and/or (b) methyl N-methyl ortho-benzoate, (V) ( a) sweet orange aldehyde (sinensal) and / or (b) orange peel essential oil sweet orange aldehyde portion.

The odor reducing material is usually contained in an amount of from 0.06 to 0.125% by weight, preferably from 0.07 to 0.115% by weight, based on the weight ratio of the outer roll paper, whereby the odor caused by the sidestream smoke can be reduced.

The air permeability of the paper roll is 6 to the point of use of the cigarette of the present invention from the viewpoint of having a low-diffuse property and a low-half-extinguishing property in the balance of the region having low diffusibility described later. 14 Colesta units are preferred, with 7 to 12 Colesta units as preferred.

Further, the air permeability of the outer roll paper can be adjusted, for example, by adjusting the amount of 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 in addition to the roll paper as described above. The raw material used for the inner paper can basically use the same raw material as the user of the outer paper, for example, cellulose fiber paper can be used as the substrate, and as such cellulose fiber paper, it can be suitably exemplified by hemp or wood or the The composition of the mixture.

The inner roll paper may contain a filler in the same manner as the outer roll paper. However, from the viewpoint of making the basis weight into the following range, it is preferred that the inner roll paper does not contain a filler.

When the filler is contained, calcium carbonate can be exemplified as a specific example.

Further, from the viewpoint of stably producing the roll paper and from the viewpoint of maintaining the flavor of the cigarette, the basis weight of the inner paper used in the present invention is 13 to 17 g/m ² , which is 14 to 16 g/m ^{2 .} good.

The thickness of the inner roll paper is usually from 22 to 42 μm.

The inner paper used in the present invention may contain a combustion-supporting agent for improving the combustibility of the cigarette in the same manner as the outer rolled paper. However, it is preferable to contain no combustion-supporting agent from the viewpoint of ensuring low burn-through property. With this configuration, a roll paper having a slow burning speed can be obtained. When a combustion improver is contained, a specific example is hydroxy acid.

From the viewpoint of improving the low-sinterability by the presence of a region having a specific diffusion coefficient to be described later, the content of the combustion-supporting agent is usually less than 0.1% by weight and the lower limit is about 0.001% by weight based on the weight of the inner paper. .

The inner paper used in the cigarette of the present invention has a low degree of burnability and a low intermediate extinguishing property from the viewpoint of having a low diffusibility region to be described later, and the air permeability is 13 to 27 The Calesta unit is preferably 15 to 23 Calesta units.

Further, the air permeability of the inner roll paper can be adjusted, for example, by adjusting the amount of 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>

The cigarette of the present invention is as described above, and as the roll paper for winding a cigarette, two rolls of roll paper of the outer roll paper and the inner roll paper are used. The cigarette paper has a carpet surface and a mesh surface as a reference surface for the surface and the back surface.

In the case of manufacturing a normal cigarette, most of the packaging is carried out such that the surface of the carpet is placed facing the outer surface of the cigarette and the surface of the mesh is placed in contact with the tobacco filament.

The cigarette of the present invention is intended to reduce the sidestream smoke by allowing the outer roll paper to contain more filler than usual. Because of this, since the amount of the paper roll, such as the cellulose fiber paper, is smaller than that used in the present invention, the force is weaker than that of the conventional paper. Moreover, in such rolls, the filler has a tendency to concentrate on its carpet surface. Therefore, when such a roll paper is to be disposed such that its carpet surface faces the outside of the cigarette, there is a possibility of surface damage in the manufacturing step.

Therefore, the cigarette of the present invention is as shown in Fig. 3, and can be suitably cited. The web surface of the outer 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 filaments.

Further, the wrapping method of the outer roll paper and the inner roll paper is as illustrated in Fig. 3, and preferably, the tobacco filament is wound in such a manner that the two ends of the inner roll paper are butt-contacted, and the outer roll is used. After the paper is wound around the outer circumference, the overlapping portions of the outer ends of the outer paper are pasted and fixed by using a paste.

<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 from 0.045 to 0.075 cm/s, and particularly preferably from 0.050 to 0.071 cm/s, from the viewpoint of maintaining low flame retardancy and preventing the extinguishment in the middle. With the range of the diffusion coefficient and the basis weight and air permeability of the outer and inner rolls are set to a predetermined range, and the content of the combustion-supporting agent of the outer paper is also set to a predetermined range, thereby achieving the purpose of the invention. .

Examples of the means for imparting such a diffusion region include a method of forming a film on a roll paper by application and drying of a film forming material described later, and a method of applying a cellulose fiber or the like to a roll paper. When a method of forming a film on a roll paper and providing 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. The thickness of the film can generally be from 0.07 to 2.0 μm.

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

In addition, the diffusion coefficient can be measured by using a diffusion coefficient tester (Diffusivity Tester) as a measuring device in a state where no pressure loss occurs in the roll paper as a sample by using CO ₂ or N ₂ as a gas. . Diffusivity Tester is manufactured by borgwaldt, and its measurement is carried out in accordance with the instructions issued by the company.

A specific method of providing a region having a specific diffusion coefficient on the outer roll paper is as shown in Fig. 3, when the web surface of the outer roll paper faces the outside of the cigarette, and the web surface of the inner roll paper is in contact with the tobacco filament. The aspect of processing the film forming material on the blanket surface of the outer rolled paper is exemplified. Further, in order to facilitate the understanding, the third embodiment is shown in such a manner that the film is present on the surface of the outer roll paper, but the aspect of the invention also includes the film forming material impregnated with the roll paper and having a low diffusion region.

Moreover, not only the outer roll paper but also the outer roll paper can be placed in a low diffusion region on the inner surface of the inner roll paper.

Among these, particularly in order to improve the low-burning function, it is particularly preferable to apply a film forming material to the surface of the outer rolled paper.

<Film forming material>

In the cigarette of the present invention, a method of using a film forming material can be exemplified as a method of processing at least the outer wrapping paper to reduce the diffusion coefficient of the processed portion to a specific range. Such a film-shaped material can be used, and examples thereof include alginic acid and salts thereof (e.g., sodium salts), pectin, polyvinyl alcohol, fibers such as ethyl cellulose and methyl cellulose, and carboxymethyl cellulose. A derivative, a starch and a derivative thereof (for example, an carboxymethyl starch, a hydroxyalkyl starch, and an ether derivative of a cationic starch, such as an acetate starch and an ester derivative of a starch phosphate and an octenyl succinate starch).

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

After coating, it is dried by using a well-known appropriate method to form a film composed of the above materials at a specific position on the roll paper.

In addition, the coating amount of the film forming material can be appropriately adjusted as described later, and the diffusion coefficient of the roll paper after the coating treatment falls within the range obtained.

In addition, the shape to be applied is a pattern from the viewpoint of coating by the above-described printing method, and the pattern thereof is a stripe shape as shown in Fig. 1 .

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

Further, from the viewpoint of ensuring low burn-through property, the number of bands of cigarettes is preferably two or more. In terms of manufacturing constraints, there are usually two. The term "width" and "space" as used in the present invention means the length of the cigarette in the long axis direction.

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

In the cigarette of the present invention, in addition to the above-mentioned two types of specific rolls, a well-known tobacco filament can be used as a material, and the filling amount of the tobacco filament can be filled at a normal value of 0.1 to 0.9 g/cm ³ . Further, as the filter, a well-known acetate filter or the like can be used. Further, as for the method of winding up the cigarette, a well-known method using two rolls of paper may be used.

(Example)

The present invention will be specifically described by way of examples, but the present invention is not limited to the description of the examples below, unless the scope of the invention is

Hereinafter, the present invention will be specifically described by way of examples, but the present invention is not limited to the description of the examples below, without departing from the spirit thereof.

<Examples and Comparative Examples 1 to 3>

First, an inner roll paper and an outer roll paper having the compositions shown in Tables 1 and 2 below were produced. The thickness of the inner roll paper is about 32 μm, and the thickness of the outer roll paper is about 65 μm. The outer roll papers 2 and 3 were coated with a film forming material (aqueous starch solution) 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 on the roll paper at intervals of 18 mm. The strip-shaped low-diffusion zone is provided with two strips on the outer roll paper. The film thickness of the tape is about 0.1 to 1.0 μm.

Any of the base papers are cellulose fiber paper, and contain calcium carbonate as a filler, citric acid as a combustion improver, and ethyl vanillin glucoside as a sidestream smoke odor reducing agent (perfume) ).

Further, the diffusion coefficient of the roll paper was measured by using a Diffusivity Tester under the conditions of a temperature of 23 ° C and a humidity of 50%. Diffusivity Tester is manufactured by borgwaldt, and the measurement is carried out in accordance with the instructions issued by the company.

The paper rolls described in the above Tables 1 and 2 were combined in the manner described in Table 3 and the cigarettes were rolled up. The cigarette was 22.6 mm in circumference and was fitted with commercial American brand tobacco filaments at a packing density of 0.19 g/cm ³ and was equipped with an acetate filter. 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 tobacco filament.

As shown in Table 3, in Comparative Example 1, since the roll paper was not subjected to the processing of the low diffusion region, the FLB rate was 0%. In Comparative Example 2, although the low-diffusion region was imparted to the outer paper, the FLB rate was high because the air permeability of the inner paper used was high and the content of the combustion-supporting agent was high. In Comparative Example 3, although the air permeability of the inner roll paper is small, and the combustion-supporting amount is reduced, and the outer roll paper is given a low diffusion region, the FLB rate is 0%, but since the diffusion coefficient value is small, the extinguishing rate is halfway. The system displays a slightly higher value.

In the first embodiment, the FLB rate and the halfway extinguishing rate are the values obtained. In addition, when the cigarette is used to adjust the diffusion coefficient of the outer roll paper to 0.045 (the basis weight, the air permeability, the combustion-supporting amount, etc. are the same as the outer roll paper 3 except for the diffusion coefficient), and the inner roll paper 2, Example 1 has the same result.

In the table, Puff indicates the number of times the cigarette has reached the reference burning amount, and is used as a performance standard for cigarettes. In general, 6.5 or more is acceptable.

Moreover, the FLB rate in the table indicates the burntness of the cigarette, which is approximately 20%. The following is better, with 15% or less being especially good.

The halfway extinguishing rate is as described above, and is a property opposite to the burning property of a cigarette, and the extinguishing rate is generally high in the middle of the cigarette when the cigarette is burnt.

It is preferable to extinguish the bad situation in smoking in the middle to reduce the extinguishing rate in the middle.

The method of analyzing the test items of cigarettes is as follows.

. Puff: According to ISO 3308: 2000 Routine analytical cigarette-smoking machine Definitions and standard condition (conventional analysis of smoking machine definition and standard conditions).

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

. Extinction rate in the middle: In the no-wind environment, it is measured whether the cigarette is naturally extinguished until the end of combustion (the end of the tipping paper is partially burned).

Midway extinguishing rate (%) = (middle extinction count ÷ measurement count) × 100

Based on the results of the above-described examples and comparative examples, it is apparent that in the combination of the specific inner roll paper and the outer roll paper, when the diffusion coefficient of the region after the film forming material is processed is more than 0.042 cm/s and 0.071 cm/s or less, It is a cigarette with good characteristics of both FLB rate and mid-way extinguishing rate.

The cigarette of the present invention has a low-sintering property which cannot be achieved by a combination of the prior art, and also has a superior function of having a low midway extinguishing property. Moreover, according to a preferred aspect of the cigarette of the present invention, the sidestream smoke can be reduced and the odor caused by the sidestream smoke can be suppressed.

1‧‧‧Tobacco filaments made from double-rolled rolls

2‧‧‧Filter

3‧‧‧Low-diffusion area

Claims (5)

A cigarette having a roll of paper and an inner roll of paper wrapped around the tobacco filament, a tobacco filament wrapped by the roll paper, and a filter, wherein the outer roll paper contains a combustion improver, and the content thereof The weight of the outer roll paper is 1.9 to 3.7% by weight, the outer roll paper has a basis weight of 58 to 67.5 g/m ² , and the inner roll paper has a basis weight of 13 to 17 g/m ² , and the outer roll is The air permeability of the paper is 6 to 14 colesta units, the air permeability of the inner paper is 13 to 27 colesta units, and the outer paper system has two or more diffusion coefficients of 0.045 to 0.075 cm/s. Striped area. 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 carpet surface of the outer roll paper. The cigarette according to claim 1 or 2, wherein the striated region is a region processed using a film forming material. The cigarette according to any one of claims 1 to 3, wherein a region processed by using the film forming material has a diffusion coefficient of 0.050 to 0.071 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 an interval between the strips of 16 to 20 mm.