JP5897567B2 - Cigarette paper with high diffusion capacity during pyrolysis - Google Patents

Description

  The present invention relates to a cigarette paper, said cigarette paper comprising a water-soluble salt, preferably sodium bicarbonate, potassium bicarbonate or ammonium carbonate, so that it has a high diffusion capacity during pyrolysis, and thus the cigarette paper The carbon monoxide in the smoke is reduced.

Background of the Invention

  It is common knowledge that cigarette smoke contains many harmful substances, especially carbon monoxide. Therefore, it is very important in this industry to produce cigarettes that emit smoke with a significantly lower content of harmful substances. To reduce the amount of such materials, cigarettes are very often equipped with filters typically made from cellulose acetate. However, these filters cannot reduce the amount of carbon monoxide present in cigarette smoke because cellulose acetate cannot absorb carbon monoxide. Various proposals for adding a catalyst to a filter to convert carbon monoxide to harmless carbon dioxide have been unsuccessful, partly for functional reasons and partly for economic reasons.

  It is also known to diffuse smoke generated from cigarettes, for example, by air flowing through holes drilled in the chipping paper. This technology has the advantage of reducing the concentration of carbon monoxide in cigarette smoke, but it also dilutes the substance that creates the taste of cigarette, thereby degrading the taste of cigarette and not being accepted by customers. There is also.

  Furthermore, it is known that carbon monoxide is selectively reduced by increasing the diffusion of gas through the cigarette paper. Various attempts are known in the prior art to increase the diffusion constant of cigarette paper, for example by selecting a suitable filter material particle distribution. Although these attempts have had initial success, they cannot increase the diffusion constant of cigarette paper to the extent that a substantial reduction in carbon monoxide is achieved.

  High carbon monoxide values have been observed especially with self-extinguishing cigarettes known in the prior art. Because such cigarettes are classified as self-extinguishing in a standardized test (ASTM E2187-04), cigarette paper having a flame retardant strip thereon is used. This test is incorporated into the law, for example in the United States, Canada, Australia and Finland. The increase in carbon monoxide value is caused by the inability of carbon monoxide to diffuse out of the cigarette through the flame retardant strip. Therefore, the industry is interested in providing cigarette paper that counteracts this undesirable side effect.

Typical cigarette paper consists of wood, flax fibers or other materials. In addition, mixtures of cellulose fibers of various origins are used. The cigarette paper has a typical basis weight of 10 g / m ^{2 to} 60 g / m ² , and 20 g / m ^{2 to} 35 g / m ² is generally preferable.

  Cigarette paper contains inorganic and mineral fillers, which are added to the paper in a mass fraction of 10% to 40%. The filler often used is chalk (calcium carbonate), but other oxides and carbonates such as magnesium oxide or aluminum hydroxide are also used.

  Cigarette paper can also contain flammable salts that increase or decrease the burning rate of the paper. Very often trisodium and tripotassium citrate and mixtures thereof are used which are added to the paper in an amount of 0-5% of the paper weight. Technically relevant flammable salt groups are citrate, maleate, tartrate, acetate, nitrate, succinate, fumarate, gluconate, glycolate, lactate, oxalate , Salicylate, α-hydroxycaprylate and phosphate. The paper is impregnated with such a burning salt solution or suspension, for example in a size press, or the solution or suspension is applied to the surface of the paper in a film press.

A typical characteristic of highly technically relevant cigarette paper is the air permeability of the paper. This means the permeability of the paper to the air flow caused by the pressure difference between the sides of the paper. Thus, the air permeability represents the volume of air flowing through the paper per unit time, per unit area and per pressure difference, and thus has the unit cm ³ / (min cm ² kPa). This is often called a CORESTA unit (CORESTA unit, CU), where 1 CU = 1 cm ³ / (min cm ² kPa). A typical cigarette paper has an air permeability of 10 CU to 300 CU, preferably in the range of 20 CU to 120 CU. The air permeability can be measured by, for example, ISO 2965.

Another important property of cigarette paper is the diffusion capacity of the paper. Diffusion capacity is a transfer coefficient and refers to the permeability of cigarette paper to gas flow caused by concentration differences. Thus, the diffusion capacity represents the volume of gas flowing through the paper per unit time, per unit area and per density difference and thus has the unit cm ³ / (cm ² s) = cm / s. Diffusing capacity for CO ₂ of the cigarette paper, for example it can be measured by a commercially available _CO 2 diffusivity Meter from Sodim Corporation. A typical cigarette paper has a diffusion capacity of 0.1 cm / s to 3.5 cm / s at room temperature, preferably 0.5 cm / s to 3.0 cm / s.

  The diffusion capacity can be measured at room temperature or standard conditions, for example at a temperature of 23 ° C. and a relative air humidity of 50%, after the paper has been properly adjusted. Alternatively, the diffusion capacity of the paper can be measured after exposing the paper to thermal stress, especially at high temperatures.

  Both air permeability and diffusion capacity are determined by the pore structure of cigarette paper and therefore there is a relationship between these properties. It is technically difficult to adjust the diffusion capacity of cigarette paper independently of the air permeability of the paper in the papermaking process. In particular, in most cases, the air permeability is part of the standard set by the cigarette manufacturer, that is, in practice the diffusion capacity is determined by the papermaking method and can only be changed within a small range. Therefore, it is particularly important to find paper that increases the diffusion capacity only when needed, ie, exactly when the tip of the smoldering cigarette burns and the paper temperature increases.

Substances in cigarette smoke are determined using methods of smoking cigarettes under standardized conditions, examples of such methods are described in ISO 4387. In this method, the cigarette is ignited at the beginning of the first aspiration (puff), and then one aspiration is taken at the cigarette mouth every minute, which has a volume of 35 cm ³ over 2 seconds, It has a profile that changes in the form of a sine wave. Suction is continued until the cigarette length drops below the length defined by the standard. During aspiration, the smoke flowing out of the cigarette mouth is collected with a Cambridge Filter Pad, after which the filter is chemically analyzed for the various substances it contains, such as nicotine. The gas phase that flows out of the cigarette mouth during suction is collected on a Cambridge filter pad and chemically analyzed to determine, for example, the amount of carbon monoxide in cigarette smoke.

  During the standardized smoking method, the cigarette is thus in two different flow states. During suction, there is a clear pressure difference between the inside of the cigarette paper facing the cigarette and the outside of the cigarette paper, typically in the range of 200 Pa to 1500 Pa. This pressure differential causes air to flow through the cigarette paper and into the cigarette tobacco portion, diluting the smoke generated during suction. During this step, which takes 2 seconds per suction, the degree of dilution is determined by the air permeability of the paper.

  However, the time between suctions is such that cigarettes smolder without significant pressure difference between the inside of cigarette's cigarette part and the environment, so gas transport is due to the difference in gas concentration between the cigarette part and the environment. It is determined. That is, carbon monoxide can diffuse from the tobacco portion, particularly from the burning tip area, through the cigarette paper and into the ambient air. In this process, which takes 58 seconds per suction, the diffusion capacity is a parameter that causes the carbon monoxide to decrease.

  Thus, to reduce the amount of carbon monoxide in the smoke, it is important to increase the diffusion capacity of the cigarette paper, particularly because carbon monoxide is generated in the burning tip area. Therefore, it is particularly advantageous that the diffusion capacity is high or increases rapidly when the cigarette paper is exposed to high temperatures by approaching the burning tip.

  When smoking a cigarette, the so-called “cheer line” is clearly seen in the burning tip area, but this cheer line actually removes the cigarette paper that has been completely thermally destroyed from the cigarette paper that is still substantially intact. It is separated. Measurements in the prior art indicate that the so-called “chearline” temperature is about 450 ° C. Accordingly, the diffusion capacity of cigarette paper needs to be high or increase rapidly at temperatures well below 450 ° C.

  It is an object of the present invention to provide a cigarette with increased diffusion capacity that allows for the reduction of carbon monoxide in the cigarette smoke.

  The present invention achieves this objective by impregnating or coating cigarette paper with one or more water-soluble salts, which decompose at relatively low temperatures, i.e., well below 450 ° C, This opens the paper pore structure on the smoldering cigarette made from this paper, making the carbon monoxide significantly diffuse out of the cigarette.

  In particular, the object of the present invention is achieved by a cigarette paper comprising at least one water-soluble salt, which loses more than 15% of its initial mass after heating to 230 ° C., with a temperature of 30 Heating initiated at 0 ° C. is performed at a heating rate of 5 ° C./min and a nitrogen flow of 25 ml / min.

  In one embodiment, the water-soluble salt loses more than 20% of its initial mass, preferably more than 25%, particularly preferably more than 30%, most preferably more than 35%.

  In one embodiment, the water soluble salt is an inorganic salt or a mixture of permanent salts.

  In one embodiment, the water soluble salt is a bicarbonate, preferably an alkali metal bicarbonate or ammonium bicarbonate, or a carbonate, preferably ammonium carbonate. Mixtures of these salts are also contemplated.

  In a preferred embodiment, each of the water soluble salt or alkali metal bicarbonate is sodium bicarbonate or potassium bicarbonate. Mixtures of both of these salts are also contemplated. EP 0 758 532 A2 describes the treatment of filter plug wrap or chipping paper with alkali metal bicarbonate, but in the usual sense "cigarette paper", ie cigarette paper wrapping cigarette cigarette rods. Is not a process. The purpose of this treatment is to increase the water dispersibility of the filter plug wrap so that the scattered filter is more likely to collapse in the natural environment in rain water. However, this disclosure does not suggest treating cigarette wrapper paper as the increased water dispersibility issue does not apply. In addition, this document is suitable for alkali metal bicarbonates to decompose at a relatively low temperature, thus opening the paper pore structure on the smoldering cigarette and facilitating diffusion of carbon monoxide out of the cigarette. Is not disclosed.

  In a particularly preferred embodiment, each of the water soluble salt or alkali metal bicarbonate is potassium bicarbonate.

  In one embodiment, the amount of water-soluble salt is from 0.1% to 10%, preferably from 1% to 6%, particularly preferably from 3% to 6% of the paper mass. These amounts can also be obtained by a mixture of various water-soluble salts.

  In a preferred embodiment, the water-soluble salt is sodium bicarbonate in an amount of at least 4%, preferably 4% to 10%, particularly preferably 4% to 6% of the paper weight.

  In another preferred embodiment, the water-soluble salt is sodium bicarbonate of at least 3%, preferably 3% to 10%, particularly preferably 3% to 6% of the paper mass.

  In yet another preferred embodiment, the water soluble salt is at least 4%, preferably 4% to 10%, particularly preferably 4% to 6% ammonium carbonate of paper weight.

  In one embodiment, the water soluble salt is contained in a cigarette paper area, preferably in a separate striped area.

  In a preferred embodiment, these areas are designed to form one or more bands in the circumferential direction of the tobacco rod on a cigarette made from this cigarette paper.

  This is the case, for example, when the cigarette paper known from the prior art has already been treated with flame retardant stripes that reduce the diffusion capacity, and cigarettes produced from that paper have been standardized (ASTM E2187-04). ) May be advantageous when classified as self-extinguishing. Typically, these flame retardant stripes are arranged to form a band in the circumferential direction on the cigarette. Such cigarettes exhibit high carbon monoxide values because less carbon monoxide can diffuse out of the cigarette through flame retardant stripes. To counteract this effect, the salt of the present invention is applied to the still untreated areas of the cigarette paper, i.e., the area between the flame retardant stripes, and these cigarette papers are thermally decomposed as these Ensure high diffusion capacity that offsets in the area.

  In a particularly preferred embodiment, these areas are separated from the flame retardant areas, preferably from the flame retardant stripes. The term “isolated” also includes certain overlaps where these areas are separated from the flame retardant areas but may be caused, for example, by the manufacturing process.

  In one embodiment, the cigarette paper is impregnated (immersed) with a water soluble salt.

  In another embodiment, the cigarette paper is coated on one or both sides with a water soluble salt.

  Furthermore, the object of the present invention is achieved by a cigarette paper comprising at least one water-soluble salt, wherein the at least one water-soluble salt is bicarbonate, preferably alkali metal bicarbonate, or bicarbonate. Ammonium or carbonate, preferably ammonium carbonate. Mixtures of these salts are also contemplated.

  In a preferred embodiment, the alkali metal bicarbonate is sodium bicarbonate or potassium bicarbonate. Mixtures of these salts are also contemplated.

  In a particularly preferred embodiment, the alkali metal bicarbonate is potassium bicarbonate.

  In one embodiment, the amount of water-soluble salt as defined above is from 0.1% to 10%, preferably from 1% to 6%, particularly preferably from 3% to 6% of the paper mass.

  In a preferred embodiment, the water-soluble salt as defined above is sodium bicarbonate and the content is at least 4%, preferably 4% to 10%, particularly preferably 4% to 6% of the paper mass. .

  In another preferred embodiment, the water-soluble salt as defined above is potassium bicarbonate and is at least 3%, preferably 3% to 10%, particularly preferably 3% to 6% of the paper mass.

In yet another preferred embodiment, the water-soluble salt as defined above is ammonium carbonate and is at least 4%, preferably 4% to 10%, particularly preferably 4% to 6% of the paper mass.

  In one embodiment, the water-soluble salt as defined above is contained in a separate area of cigarette paper, preferably in a striped area.

  In a preferred embodiment, the areas containing the water-soluble salts as defined above are designed so that these areas form one or more bands in the circumferential direction of a cigarette tobacco rod made from this paper. Yes.

  In a particularly preferred embodiment, these areas are separated from the flame retardant areas.

  In one embodiment, the cigarette paper is impregnated (immersed) with a water-soluble salt as defined above.

  In another embodiment, the cigarette paper is coated on one or both sides with a water soluble salt as described above.

  The objects of the present invention are further achieved by a cigarette comprising the cigarette paper of the present invention.

  Cigarettes can be used on conventional cigarette making machines using this cigarette paper and using other optional components as desired, such as cigarettes, chipping paper, filters, plug wrap paper and adhesives. Can be manufactured.

The object of the present invention is achieved by a method for producing the cigarette paper of the present invention, which comprises:
(1) preparing a cigarette paper or fiber-filler suspension;
The paper or fiber-filler suspension comprises less than 50%, preferably less than 30% water, based on the total weight of the paper or the total weight of the fiber-filler suspension, respectively.
(2) The step of applying an aqueous solution containing at least one water-soluble salt and the amount of the water-soluble salt in the solution is 0.2% to 20%, preferably 2% to the total mass of the solution. 15%,
Comprising.

  In one embodiment of the method, the water soluble salt is an inorganic salt. A mixture of inorganic salts in aqueous solution is also contemplated.

  In one embodiment of the method, the water-soluble salt in the aqueous solution is bicarbonate, preferably alkali metal bicarbonate or ammonium bicarbonate or ammonium carbonate, preferably ammonium carbonate. Mixtures of these salts in aqueous solution are also contemplated.

  In a preferred embodiment of the method, the water soluble salt or alkali metal bicarbonate is sodium bicarbonate or potassium bicarbonate. A mixture of two salts in an aqueous solution is also contemplated.

  In a particularly preferred embodiment, the water soluble salt or alkali metal bicarbonate is each potassium bicarbonate.

  In one embodiment, the amount of the at least one water-soluble salt is from 0.1% to 10%, preferably from 1% to 6%, particularly preferably from 3% to 6% of the paper mass of the cigarette paper produced by this method. %.

  In one embodiment, in step (2) of the method, the water soluble salt is applied to a cigarette paper, preferably in a striped area.

  In a preferred embodiment, these areas are designed to form one or more bands in the circumferential direction of a tobacco rod on a cigarette made from this paper.

  In a particularly preferred embodiment, these areas are separated from the flame retardant areas.

  In one embodiment, in step (2) of the method, the aqueous solution is applied using a size press or a film press.

  In the size press or film press of a papermaking machine, the aqueous solution is applied to the entire surface of one side or both sides of the paper. Thus, the paper is substantially impregnated with the solution.

  In another embodiment, in step (2) of the method, the aqueous solution is applied using printing or spraying techniques.

  By applying the aqueous solution in a papermaking machine or later by printing methods or by spraying, the solution can be applied to the surface and only to one side of the paper. This may be advantageous when the solution changes the optical properties of the paper. In that case, the solution is preferably applied to the side of the paper that later faces the cigarette.

  Other methods for applying the aqueous solution to the paper are also contemplated. However, if the cigarette paper absorbs the solution and already has the ability to substantially fix the water-soluble salt in the fiber structure, it is important to apply the solution during or after papermaking. This is the case when the water content of the paper or fiber-filler suspension passing through the papermaking machine is less than 50% of the total paper weight, preferably less than 30% of the total paper weight, respectively. This is true when the paper leaves the compression section of a paper machine. For example, water-soluble carbonates or bicarbonates, such as fillers, may be added to the fiber-filler suspension before the suspension reaches the papermaking machine so that the carbonates and heavys present in the solution are added. Carbonate is not advantageous because it is lost significantly during the dewatering process in the wire section of the papermaking machine.

  The object of the present invention is to use at least one water-soluble salt, preferably an inorganic salt, to determine the diffusion capacity of the cigarette paper or the area of cigarette paper during the pyrolysis and the initial diffusion capacity at 23 ° C. before the pyrolysis. It is further achieved by increasing the value by just over 0.9 cm / s and / or by more than 50%.

  In one embodiment of use, the water-soluble salt is bicarbonate, preferably alkali metal bicarbonate, or ammonium bicarbonate or carbonate, preferably ammonium carbonate.

  In one embodiment of use, the water soluble salt is an alkali metal bicarbonate.

  In a preferred embodiment of use, the alkali metal bicarbonate is potassium bicarbonate.

  In a particularly preferred embodiment, the zones are separated by flame retardant zones.

  The features of the invention disclosed in the specification and in the claims are essential to the practice of the invention, in its various embodiments, individually and in any arbitrary combination.

  The present invention is a special salt, shown here, where cigarette paper with increased diffusion capacity decomposes at a relatively low temperature, i.e. significantly below 450 ° C., thereby opening the pore structure of the cigarette paper. Based on the surprising discovery that sodium bicarbonate, potassium bicarbonate and ammonium carbonate are obtained when impregnated or coated on paper. It has been found that the increase in the diffusion capacity of cigarette paper during pyrolysis is sometimes more than double. Such an increase in diffusion capacity contributes significantly to the reduction of harmful carbon monoxide in smoke emitted from cigarettes made from this paper.

The figure which shows the weight loss of the water-soluble salt at the time of heating by thermogravimetric analysis.

Detailed Description of the Invention

  The present invention will now be described with reference to examples and the accompanying drawings.

FIG. 1 shows the weight loss of water-soluble salts when heated by thermogravimetric analysis. Mass loss is shown as a percentage of initial mass in relation to temperature. Heating from an initial temperature of 30 ° C. to a temperature of 600 ° C. was performed under a nitrogen gas flow of 25 ml / min. TKZ = tripotassium citrate, TNZ = trisodium citrate.

Example 1 Manufacture of cigarette paper with sodium bicarbonate, potassium bicarbonate or ammonium carbonate 32% of the paper mass made from wood pulp consists of chalk as filler, has a basis weight of 25 g / m ² and air permeability A cigarette paper having a 30 CU and a diffusion capacity of 1.75 cm / s was used in the experiment. This paper is a regular cigarette paper, so the same results as other cigarette papers are expected and basically the choice of cigarette paper, for example in terms of air permeability, diffusion capacity, fiber and filler composition or basis weight. There is no limit.

The cigarette paper was impregnated with sodium bicarbonate (NaHCO ₃ ), potassium bicarbonate (KHCO ₃ ) or ammonium carbonate (NH ₄ ) ₂ CO ₃ ) at various concentrations in a size press.

  The same cigarette paper impregnated with a 50:50 mixture by weight of trisodium citrate (TNZ) or trisodium citrate and tripotassium citrate (TNZ / TKZ), respectively, was used for comparison.

Example 2 Measurement of diffusion capacity of manufactured cigarette paper The diffusion capacity of the cigarette paper manufactured in Example 1 was measured with a CO ₂ Diffitivity Meter commercially available from Sodim.

  The diffusion capacity of the paper at 23 ° C. and 50% humidity was constantly about 1.75 cm / s. After exposing the paper to a temperature of 230 ° C. for 30 minutes, the paper was adjusted at 23 ° C. and 50% humidity, and then the diffusion capacity was measured. The absolute measured values are shown in Table 1.

  Table 1 shows that the diffusion capacity of paper containing sodium bicarbonate, potassium bicarbonate or ammonium carbonate for each concentration of paper mass is trisodium citrate or trisodium citrate / tripotassium citrate. Indicates higher than capacity. The highest diffusion capacity measured with citrate was 2.616 with 7% trisodium citrate / tripotassium citrate. Values higher than 2.616 cm / s have also been obtained with 4% amounts of sodium bicarbonate and ammonium carbonate and 3% amounts of potassium bicarbonate. A diffusion capacity of 2.7 cm / s or more is obtained with sodium bicarbonate (≧ 6%), potassium bicarbonate (≧ 4%) or ammonium carbonate (≧ 5%), but not with citrate. Absent.

  Table 2 shows the increase in diffusion capacity in cm / s compared to the initial value of 1.75 cm / s at room temperature, and the relative increase as a percentage of this initial value.

  Table 2 shows that the use of sodium or potassium bicarbonate or ammonium carbonate increases the diffusion capacity of cigarette paper during pyrolysis, sometimes compared to citrate as a normal flammable salt, It clearly shows an increase of more than twice.

  These examples show that the diffusion capacity increases in this case by a little over 0.9 cm / s starting from the initial value of 1.75 cm / s at 23 ° C., or the percentage increase of the diffusion capacity is likewise at the initial value at 23 ° C. On the other hand, an increase of over 50% is not possible with the usual flammable salt citrate, but it is further shown that it is possible with the inorganic salt used. This requires the use of at least 4% sodium bicarbonate or at least 3% potassium bicarbonate or at least 4% ammonium carbonate.

  These examples also show that a content of up to 6% relative to the paper weight is preferred, since further improvement cannot be achieved by increasing the amount of sodium bicarbonate beyond 6%. However, with potassium bicarbonate, a content of more than 6% achieves a further significant improvement, so an upper limit for the reasonable use of potassium bicarbonate cannot be set experimentally, but instead this paper For reasons of taste of cigarettes made from the content should be limited to about 10%. For ammonium carbonate, the improvement that can be achieved with content above 6% will be reduced, but it will not stop at content up to 8%, so the useful upper limit will still be about 10%. In summary, with regard to the effects of the present invention, potassium bicarbonate is superior to sodium bicarbonate or ammonium carbonate, and the use of potassium bicarbonate is particularly preferred.

  The cause of the observed effect is probably due to the decomposition of sodium bicarbonate and potassium bicarbonate at a lower temperature than the commonly used flammable salts, ie about 50 ° C. Ammonium bicarbonate and ammonium carbonate also decompose at a temperature of about 60 ° C., so both decompose at a much lower temperature than trisodium citrate or tripotassium citrate, which only begins to decompose at 150 ° C. Thermogravimetric analysis in which the sodium bicarbonate and potassium bicarbonate used to coat the paper in Table 1 are heated to 30-600 ° C. at a rate of 5 ° C./min in a nitrogen stream of 25 ml / min is relatively low It shows that the rapid loss of mass at temperature is responsible for the increase in diffusion capacity. The results are shown in FIG. When the temperature reaches 230 ° C., the mass loss is about 35% of its initial mass for sodium bicarbonate and about 30% of its initial mass for potassium bicarbonate. The figure shows that sodium bicarbonate and potassium bicarbonate not only lead to increased diffusion capacity, as shown in Table 1, but also higher than normal flammable salts in the range of about 130 ° C to 230 ° C. ing.

  Thus, under this analytical method condition, it was observed when the selected inorganic salt lost 30% to 35% of the initial mass at a temperature of 230 ° C., possibly a smaller fraction, eg 15% to 25%. It is estimated that an effect is expected.

Claims (14)

Cigarette paper for wrapping cigarette tobacco rods, wherein the cigarette paper has a flame retardant strip thereon and comprises at least one water-soluble salt, and the water-soluble salt is heated to 230 ° C. A salt in which more than 15% of the initial mass of the salt is lost, and the heating is started at a temperature of 30 ° C. and at a heating rate of 5 ° C./min, under a nitrogen flow of 25 ml / min , The amount of water-soluble salt in the cigarette paper is such that after the cigarette paper is heated at 230 ° C. for 30 minutes, the diffusion capacity of the cigarette paper or the area of the cigarette paper is compared to the initial value of the diffusion capacity at 23 ° C. before heating. Cigarette paper selected to increase by more than 0.9 cm / s or more than 50% . Wherein the water soluble salt is an alkali metal bicarbonate, ammonium bicarbonate or ammonium carbonate, the cigarette paper of claim 1. The cigarette paper according to claim 2 , wherein the alkali metal bicarbonate is sodium bicarbonate or potassium bicarbonate. The amount of the water-soluble salt is from 3% to 6% of the paper quality amount, the cigarette paper according to any one of claims 1-3. Wherein said water-soluble salt, exist in separate zones, cigarette paper according to any one of claims 1-4. 6. Cigarette paper according to claim 5 , wherein the zone is designed to form one or more bands of cigarettes made from the cigarette paper in the circumferential direction of the tobacco rod. The cigarette paper according to any one of claims 1 to 6 , wherein the cigarette paper is impregnated with the at least one water-soluble salt. The cigarette paper according to any one of claims 1 to 6 , wherein one side or both sides of the cigarette paper is coated with the at least one water-soluble salt. A cigarette comprising the cigarette paper according to any one of claims 1 to 8 . It is a manufacturing method of the cigarette paper as described in any one of Claims 1-8 , or the manufacturing method of the cigarette of Claim 9 , Comprising: The said method is the following process:
(1) textiles - a step of preparing a filler suspension,
Wherein said fibrous - filler suspension, the fiber - for each of the total mass of the filler suspension comprises 50% less than water,
(2) an aqueous solution containing at least one water-soluble salts, before Symbol fibers you pass through the papermaking machine, respectively - the amount of the water-soluble salts in the solution, where a step of coating the filler suspension , 2% to 15% by relative to the total weight of said solution,
Comprising a method. Wherein said water-soluble salt, A alkali metal bicarbonate salts, ammonium bicarbonate or ammonium carbonate The method of claim 10. The method of claim 11 , wherein the alkali metal bicarbonate is sodium bicarbonate or potassium bicarbonate. The method according to any one of claims 10 to 12 , wherein the aqueous solution is applied using a size press or a film press. 13. A method according to any one of claims 10 to 12 , wherein the aqueous solution is applied using printing or spraying techniques.

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