JPH1081A - Winding paper for smoking article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a winding paper for smoking article capable of reducing a sidestream smoke without using a filler or an additive or without increasing the amount of the filler or the filler blended or added even if used. SOLUTION: This winding paper for smoking article comprises a flax pulp beaten in such a high beating degree as to reduce a sidestream. In other words, the winding paper comprises the flax pulp having a such a low freeness as to lower a sidestream. The flax pulp high in beating degree is mixed with a necessary filler and made into paper by a TAPPI standard hand making paper machine.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a wrapping paper for smoking articles.

[0002]

2. Description of the Related Art When smoking tobacco,
Mainstream smoke is drawn by the smoker through the tobacco body and sidestream smoke rising from the tip of the lit cigarette.

[0003] In order to reduce the amount of sidestream smoke, there has been proposed a wrapping paper for smoking articles in which the following filler is blended or an additive is added. For example, JP-A-63-87967
The publication describes a packaging web for smoking articles having an outer peripheral surface of about 8 m ² per m ² of wrapping paper and to which an additive containing about 15% by weight of an alkali metal salt is added.

Japanese Patent Application Laid-Open No. 1-112974 describes a smoking article in which an inorganic metal salt such as aluminum hydroxide or calcium hydroxide is added to a wrapping paper. Also,
JP-A-2-156877 discloses calcium sulfate,
A smoking article is disclosed in which 1-50% by weight of calcium tartrate is added to a paper wrapper.

[0005] Japanese Patent Application Laid-Open No. 3-43068 discloses that
A wrapping paper containing 30 to 40% of calcium carbonate having a surface area of 20 to 80 m ² / g by a BET method, 2 to 10% of a combustion chemical, 0 to 1% of monoammonium phosphate, and 0 to 1% of sodium carboxymethylcellulose is described. Have been.

JP-A-3-180597 discloses that calcium carbonate having a surface area of 20 m ² / g or more contains 30% by weight of calcium carbonate.
And 0.5 to 12% by weight of an organic acid such as succinic acid and malonic acid are disclosed.

Further, Japanese Patent Application Laid-Open No. Hei 5-279994 discloses secondary particles of calcium carbonate formed by agglomeration of cubic primary particles of calcium carbonate having a particle size of 0.15 μm or less, and a cellulose-based web. A wrapper for a smoking article is disclosed.

[0008]

All of the above-mentioned technologies for reducing sidestream smoke involve blending or adding fillers or additives of a type not used in ordinary wrapping paper to reduce sidestream smoke. Fillers or additives. For this reason, there is a disadvantage that the cost of the wrapping paper increases. In addition, since these fillers and additives are expected to affect the taste of tobacco to a considerable extent, it may be necessary to reduce the amount of compounding and the amount of addition in a range that does not affect the taste of tobacco. . In such a case, in order to enhance the effect of reducing sidestream smoke, it is not possible to simply increase the blending amount and the adding amount of the filler and the additive.

[0009] Similarly, by blending or adding a large amount of fillers and additives, other characteristics required for the wrapper, that is, the optical characteristics of the wrapper and the flammability and ash characteristics of the cigarette are deteriorated. Is also conceivable. In order to solve the above problems, a technique for reducing sidestream smoke other than the use of fillers or additives has been desired.

The present invention reduces sidestream smoke without the use of fillers or additives for reducing sidestream smoke, or, if used, without increasing the amount of fillers or additives blended or added. A wrapper for smoking articles is provided.

[0011]

SUMMARY OF THE INVENTION The present invention provides a wrapping paper for smoking articles characterized by being made of pulp beaten at a high degree of beating to such an extent that sidestream smoke is reduced. This wrapping paper for smoking articles may contain a filler,
Additives may be added. The filler and the additive may have a sidestream smoke reduction effect.

Further, the present invention provides a wrapping paper for smoking articles, which is made of pulp having Canadian standard freeness low enough to reduce sidestream smoke. This wrapping paper for smoking articles may also contain fillers or additives. The filler and the additive may have a sidestream smoke reduction effect.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail. The present inventors have conducted intensive studies to solve the above-described problems, and as a result, when no filler is added and no additive is added, the higher the degree of beating of the pulp, the more the amount of sidestream smoke of the wrapping paper can be suppressed. Was found. Even when fillers or additives are blended or added, if the blending amount of fillers and the amount of additives are the same, the higher the degree of beating of the pulp, the lower the amount of sidestream smoke of the wrapping paper. We found that it could be suppressed.

The pulp used in the smoking wrapping paper of the present invention is not particularly limited, but may be flax pulp, N-BKP or L-pulp.
-Wood pulp such as BKP, herbaceous bast pulp such as cannabis, chomp, jute, kenaf, leaf fiber pulp such as Manila hemp, Zyzal hemp, grass family pulp such as straw and esparto, sow coats such as cotton and linter It is generally used for wrapping paper such as fiber pulp.

Here, one of the indexes indicating the degree of beating of pulp is freeness. One of the freeness degrees is Canadian Standard Freeness (CSF). CSF is a value measured according to the paper freeness measurement method specified in Japanese Industrial Standards (JIS) P8121. In addition to the Canadian standard freeness, JIS defines the Jopper Wrigler method.

More specifically, the CSF is a pulp suspension (concentration: 0.3%, 1000 m) using a Canadian standard freeness tester.
This is a value obtained by measuring the instantaneous dehydration of 1). As the pulp is beaten, the dewatering property deteriorates and the CSF decreases. Therefore CSF
Is used as an index indicating the degree of beating.

The wrapping paper for smoking articles of the present invention is obtained by beating pulp and then making paper. The pulp is beaten according to the usual method. That is, for example, beaters, conical refiners, drum refiners,
By using a disc refiner, etc., by mechanically processing the raw pulp fibers defibrated and suspended in water,
The pulp is beaten.

[0018] The wrapping paper for smoking articles of the present invention may contain a filler for improving the characteristics of the wrapping paper and the characteristics of the cigarette. For example, calcium carbonate, titanium dioxide,
Talc, magnesium carbonate or organic synthetic fillers.

Further, the wrapping paper for smoking articles of the present invention may contain an additive for improving the characteristics of the wrapping paper and the characteristics of the cigarette. For example, organic acid salts such as citric acid, tartaric acid, succinic acid, malic acid and lactic acid, carbonates, nitrates and the like.

Further, the wrapping paper for smoking articles of the present invention may contain or add a filler or additive having an effect of reducing sidestream smoke. In this case, even with the same amount of filler or additive, the higher the beating degree of the pulp, that is, the lower the freeness of the pulp, the higher the sidestream smoke reduction effect. Examples of the filler having a sidestream smoke reducing effect include magnesium hydroxide, magnesium oxide, and calcium sulfate. Additives with sidestream smoke reduction effects include ammonium phosphate,
Phosphates such as sodium phosphate, potassium phosphate and sodium hexametaphosphate; chlorides such as aluminum chloride and sodium chloride; carboxymethylcellulose; starch;

[0021]

EXAMPLES Experiments performed to confirm the sidestream smoke reduction effect of the wrapping paper for smoking articles of the present invention will be described below. [Measurement of Freeness] Flax pulp and wood pulp for paper wrapping have significantly poorer freeness than ordinary paper pulp, and it is difficult to measure freeness according to the Canadian standard method. Therefore,
The concentration of the pulp suspension is 0.3
% To 0.1%, and the plate with small holes attached to the lower part of the drainage tube of the measuring instrument was changed to an 80-mesh mesh plate for measurement. This value was defined as CSF. This measurement method is known to those skilled in the paper industry as the 1 g wire method.

[Manufacture of Test Paper] Experiment 1 Unbeaten flax pulp and beaten flax pulp were prepared. The freeness (CSF) of these pulps was 220 and 80, respectively, as shown in Table 1. Each of these pulp was made into paper on a TAPPI standard type hand-made paper machine to obtain test wrapping papers 1 and 2.

Experiment 2 Next, three types of wood pulp, ground prairie (softwood bleached kraft pulp; N-BKP) having different beating degrees, were prepared. Three types of wood pulp freeness (CS
F) was 419, 352 and 256, respectively, as shown in Table 1. Each of these three types of wood pulp was paper-made with a TAPPI standard type hand-made paper machine to obtain test wrapping papers 3 to 5.

Experiment 3 Unbeaten flax pulp was passed through a double disk refiner 7, 8 and 9 times (the number of refiner treatments) to obtain three types of beaten pulp. As shown in Table 1, the freeness (CSF) of these pulp was 178, 1
50 and 131. In these pulps, the primary particles having a sidestream smoke reduction effect and having a cubic shape of 0.03
Calcium carbonate having a particle size of ~ 0.15 μm (hereinafter, referred to as
Fine particle size calcium carbonate) was blended at a blending ratio of 10% by weight with respect to the whole wound paper after papermaking. Thereafter, each of these pulp papers was made by a TAPPI standard type hand-made paper machine to obtain test wrapping papers 6 to 8.

Further, a normal commercial paper roll was prepared as a control sample. [Production of Test Tobacco] Using the test wrapping papers 1 to 8 and the control sample, a commercial tobacco cut was wound under the following conditions. Length: 59 mm Circumference: 25 mm Winding weight: 0.695 g [Measurement of amount of sidestream smoke per cigarette] For the above-mentioned test tobacco, the winding weight is 0.695 ± 0.02 g, and the wind resistance is wound. After selecting those having an average value of ± 5 mmH ₂ O,
The amount of tar in the sidestream smoke was measured according to the fishtail method. That is, as shown in FIG. 1, a test tobacco 12 is attached to a smoking device 11 and burned to a combustion length of 40 mm under standard smoking conditions (35 cc / 2 seconds, suction once per minute, remaining time 58 seconds still). Was. Meanwhile, the sidestream smoke was sucked at 3 liters / minute using the fishtail collector 13 and a Cambridge filter (44 mm in diameter) provided at the tip of the fishtail collector 13 in the suction direction.
The weight change of the Cambridge filter 14 is measured.
The weight of the particulate phase component in the sidestream smoke adhering above was calculated.
On the other hand, the particle phase components attached to the Cambridge filter 14 and the inner wall of the fishtail type collector 13 were each subjected to solvent extraction, and the absorbance was measured. From the obtained ratio of each absorbance and the value of the weight of the particle phase component in the sidestream smoke adhering to the Cambridge filter 14 calculated previously, the value of the particle phase component adhering to the inner wall of the fishtail type collector 13 is determined. The weight was calculated. The sum of the weight of the particulate phase component in the sidestream smoke adhering to the Cambridge filter 14 and the weight of the particulate phase component adhering to the inner wall of the fishtail collector 13 is calculated as the sidestream flow rate per cigarette. The amount of smoke (mg / cig) was used. Further, the reduction rate (%) of the sidestream smoke per test cigarette was determined using the tobacco rolled up in the same manner as described above using a normal commercial wrapping paper. Table 1 shows the results. FIG. 2 is a characteristic diagram showing the relationship between the freeness of pulp and the sidestream smoke reduction rate of the wrapping paper based on the results of Experiments 1 to 3.

[0026]

[Table 1]

In Experiment 1, as is apparent from Table 1 and FIG. 2, the test wrapping paper using the beaten flax pulp was more sidestream smoke than the testing paper wrapping paper 1 using the unbeaten flax pulp. The reduction rate was high. In other words, flax pulp that has been beaten and has reduced freeness has a higher sidestream smoke reduction rate than unbeaten flax pulp. From these results, it was confirmed that by reducing the freeness by beating flax pulp, the sidestream smoke reduction effect was enhanced.

In Experiment 2, as is clear from Table 1 and FIG. 2, the sample paper wrappers 3 to 5 have a higher sidestream smoke reduction rate as the freeness decreases. From these results, it was confirmed that the lower the freeness of the wood pulp, in other words, the higher the degree of beating of the wood pulp, the higher the sidestream smoke reduction effect.

Experiment 3 is the case where the beating degree of the pulp was changed when the same amount of fine particle size calcium carbonate as a filler having a sidestream smoke reducing effect was mixed with flax pulp. Also in this case, as is clear from Table 1 and FIG. 2, the sample wrapping papers 6 to 8 increase the side flow as the number of refiner treatments is increased and the degree of beating of the pulp is increased, that is, as the pulp freeness decreases. The smoke reduction rate is high. From this result, it is possible to increase the sidestream smoke reduction effect by increasing the degree of beating of the pulp without increasing the blending amount of the filler having the sidestream smoke reduction effect, in other words, reducing the freeness of the pulp. Was confirmed.

[0030]

As described above, since the wrapping paper for smoking articles of the present invention is composed of pulp beaten with a high degree of beating, it reduces sidestream smoke without adding or adding fillers or additives. As a result, the cost of wrapping paper can be reduced. Further, even when a filler or an additive having a sidestream smoke reduction effect is blended or added, the sidestream smoke can be further reduced without increasing the blending amount or the added amount. This allows for a reduction in sidestream smoke without adversely affecting the properties of the wrapper and tobacco due to increased fillers or additives.

Further, since the wrapping paper for smoking articles of the present invention is composed of pulp having low freeness, sidestream smoke can be reduced without blending or adding fillers or additives.
The cost of wrapping paper can be reduced. In addition, even when a filler or an additive having a sidestream smoke reducing effect is blended or added, the sidestream smoke can be further reduced without increasing the blending amount or the added amount. This allows for a reduction in sidestream smoke without adversely affecting the properties of the wrapper and tobacco due to increased fillers or additives.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing an apparatus for measuring the amount of tar in sidestream smoke used in an experiment for confirming the effect of the present invention.

FIG. 2 is a characteristic diagram showing the relationship between the freeness of pulp and the sidestream smoke reduction rate of wrapping paper.

[Explanation of symbols]

11: smoking machine, 12: cigarette, 13: fishtail type collector, 14: Cambridge filter.

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Kazuko Takeda 6-2 Umegaoka, Aoba-ku, Yokohama-shi, Kanagawa Prefecture, Japan Tobacco Industry Co., Ltd.

Claims (10)

[Claims] 1. A wrapping paper for smoking articles, which is made of pulp beaten with a high degree of beating to the extent that sidestream smoke is reduced. 2. The wrapping paper for a smoking article according to claim 1, further comprising a filler. 3. The wrapping paper for a smoking article according to claim 2, further comprising a filler having an effect of reducing sidestream smoke. 4. The wrapping paper for a smoking article according to claim 1, wherein an additive is added. 5. The wrapping paper for a smoking article according to claim 4, further comprising an additive having an effect of reducing sidestream smoke. 6. A wrapping paper for smoking articles, which is made of pulp having a low freeness such that sidestream smoke is reduced. 7. The smoking article wrapper according to claim 6, further comprising a filler. 8. The wrapping paper for a smoking article according to claim 2, further comprising a filler having an effect of reducing sidestream smoke. 9. The wrapping paper for a smoking article according to claim 4, wherein an additive is added. 10. The wrapping paper for a smoking article according to claim 9, further comprising an additive having an effect of reducing sidestream smoke.