Paper for cigarettes and cigarettes with tobacco

This invention relates to wrapping paper for smoking material wrapping and to the manufacture of smoking cores. Hereinafter, such wrapping paper is called cigarette paper.

Previously, a paper for cigarettes containing magnesium oxide introduced to reduce appreciable side-smoke was offered compared to that produced by conventional cigarette paper. This turns out to be of poor quality, made with paper designed to reduce the amount of by-product smoke, as noted by smokers, giving the main smoke an extra taste, as well as demonstrating poor ash formation.

The object of the present invention is to provide paper for cigarettes with reduced generation of side smoke.

paper for cigarettes, for example, cigarettes

It is a further object of the present invention to provide a cigarette having a reduced generation of side smoke or other types of smoke with a similar reduced generation of side smoke.

The present invention encompasses cigarette paper having a total filler content of about 20 percent by weight or less, that is, a filler ratio that provides significant reduction in the generation of side smoke, and the paper itself weighs about 30 grams per square meter or more.

The present invention also encompasses such smokers that incorporate into the main composition of the smoky object and the wrapping paper wrapping the smokable substance a total filler content of up to 20 percent by weight, and the filler in such proportion provides an effective reduction in the generation of side smoke. the paper weighs 30 grams per square meter or more.

A filler that provides a significant reduction in by-pass flow is the best magnesium oxide and / or magnesium hydroxide or chalk on a very smooth surface or a mixture of these components. The magnesium oxide used for the purposes of the present invention is preferably the reactive fraction.

As an addition to the filler, which significantly reduces by-pass flow, plain chalk can also be included in the filler composition. The amount of filler, including chalk, is best selected from about 12 percent to about 3 percent of the weight of the paper, and generally does not exceed 10 percent of the weight of the paper.

The preferred amount of filler that significantly reduces the main flow is in the range of about 4 percent to 18 percent by weight, but the best ratio is about or more 7 percent by weight.

The paper has a throughput of about 10 Coresta units or less, and an even better size of about 5 Coresta units or less, related to binding flow.

Air permeability for paper, expressed in Coresta units, is the amount of air, expressed in cubic centimeters, passing through one square centimeter of paper per minute at a constant pressure difference of one kiloPascal.

Cellular paper for cigarettes consists of interconnected fibers which are exclusively or predominantly cellulosic fibers mixed with filler particles such as calcium carbonate. The holes in the matrix of fiber or filler have a sequence of one micrometer to width and are very small in relation to the thickness of the paper (typically 20 to 50 micrometers) and the air flow through such openings is determined by the binding forces. In addition, if the paper appears to be perforated in its manufacturing process, the perforations are relatively large and generally have a width such as the thickness of the paper. In addition, airflow through such perforations is determined by energy forces.

Thus, it can be concluded that when perforated paper permeability is determined by the permeability method according to Coresta, the values ​​obtained are the sum of the permeability resulting from the continuous flow through the openings in the paper production process and the permeability resulting from the inert flow through the perforation. The paper has the same 2 formed perforations, although it is more perforated, although not perforated, with small openings with a continuous flow, large openings with an inert flow, and the latter openings can be called pin stitches. Paper with such properties can occur, for example, in the unsatisfactory process of making paper.

The total air flow through the paper can be expressed by the following formula:

Q = ZAP + Z ^ iPJn where '1

Q - denotes air flow (cm min),

A - denotes the paper area (cm²) through which the air flow is directed,

<td></td><td>P -</td><td>denotes added (kiloPasks),</td><td>4 paper</td><td>pressure</td><td>the difference</td>

<td></td><td>Z -</td><td>denotes paper</td><td>penetration,</td><td colspan="2">leading to extensions</td>

<td> 5</td><td></td><td colspan="4">flow through the openings formed by the paper</td>

<td></td><td></td><td>in the manufacturing process</td><td>, expressed</td><td>Coresta</td><td>in units</td>

<td></td><td></td><td colspan="2">(cm min ¹ kiloPascal),</td><td></td><td></td>

<td></td><td>z¹ -</td><td>denotes paper</td><td colspan="2">permeability leading to</td><td>inert</td>

<td> 10</td><td></td><td>- - what to stream through</td><td>perforations</td><td>and / or</td><td>pins</td>

<td></td><td></td><td>fists (cm min '¹</td><td>kiloPascal ¹</td><td>) and</td><td></td>

n - denotes a constant for this set of perforated holes or studs where 0.5 &lt;n &lt;1.0, moreover, the exact value n depends on the size of the punches or studs.

Total paper permeability including perforation permeability and / or permeability resulting in 20 pin stitches equal to Z + Z¹in addition, the relative values ​​of these values ​​for this paper type can be obtained by measuring the airflow through the paper by selecting the differences in pressure added to the paper and quantifying the Q / P ratio in the above formula at the value corresponding to the average perforation size. - staples in this type of paper.

It will be appreciated that a value equal to ten Coresta per 30 mentioned above for the relative smoking wrapper according to the present invention is intended for the permeability of these wrappers resulting in a continuous flow. It is also to be understood that the smoking wrapper of the present invention may have a total permeability, i.e., a permeability determined using the Coresta method of greater than ten units in the case of the wrapping paper having perforations and / or pins.

As a rule, the maximum weight of the total filler on paper is about eight grams per square meter.

The paper weight is, as a rule, about 35 grams per square meter or more, with a better value of about 40 grams per square meter or more.

Most paper according to the invention has flame retardants in the range of about two to ten percent by weight.

Additives which have proved to be sufficiently effective in achieving the object of the present invention include sodium acetate, tricalcium citrate, sodium orthophosphate and potassium tartrate. Salts of flammable additives may be provided in either alkaline, acidic or aqueous solutions.

Combustion additives may be either combustion accelerators or combustion retardants.

Smokers' smoking articles according to the invention may include a defined proportion of expanded tobacco. Expanded tobacco can have a total density of 100 grams per cm³to 175 grams cm³ within. The proportion of expanded tobacco in the smoking material should be at least ten percent by weight, and preferably at least 20 percent by weight, more preferably not more than 30 and even 40 percent by weight.

The smoking tobacco core of the present invention has a core length of at least 45 millimeters, more preferably at least 55 millimeters. Cores of smoking material must preferably have uniform cross-sectional shapes and sizes throughout their length.

s

If, as is customary for cigarettes and similar smokers, the smoking article core of the present invention has a uniform annular cross section, the core may have a circumference of 10 to 30 millimeters. While achieving a significant and commercially useful smoking side smoke reduction in accordance with the present invention, the core circumference is 25 ± 5 millimeters, and even better results are obtained when the core circumference is less than this value and reaches up to 10 millimeters. Preferably, according to the present invention, the core-shaped smoking circle has a circumference of no more than 12.5 millimeters.

According to the present invention, at least five strokes, preferably not less than six strokes, are provided for smoking in standard mechanical smoking conditions.

Preferably, the smokers of the present invention have a filter or mouthpiece mounted on one end of the smoking material core.

The smokers of the present invention may actuate a venting device.

It is to be understood that the smokers of the present invention may have a wrap that includes one or more sheets overlapping the wrapping material.

EXAMPLE

The first batch of cigarettes tested was cigarette cores having a length of 64 millimeters and a circumference of 24, 73 millimeters and filters of 20 millimeters of acetate cellulose. The density of the cut tobacco filling the cigarette core was 256 milligrams per cubic centimeter. The Cigarette Wrap was made from Plain Cigarette Paper with a penetration of 45 Coresta units with an average weight of 37 grams per square meter. The paper had 28.8% calcium carbonate filler. These cigarettes were designated Cigarettes 1.

The second batch of cigarette controls, designated Cigarettes 2, consisted of 64 millimeters of cigarette cores having a circumference of 24.82 millimeters and filters of 20 millimeters in acetate cellulose. Cigarette core filler made from cut tobacco had a density of 261 milligrams per cubic centimeter. The cigarette wrap was made of paper with a permeability of 61 Coresta units, and a weight of 34.8 grams per square meter. The paper contained 15.4 percent calcium carbonate and 11 percent magnesium oxide.

*

The third batch of cigarette control had cigarette cores 64 millimeters long with circles 24.82 millimeters in length and filters made of acetate cellulose 20 millimeters long. The filling, made from cut tobacco, had a density of 252 milligrams per cubic centimeter. Cigarette wrapping was carried out with a penetration of six Coresta pieces of paper weighing 35.6 grams per square meter. The paper turned on a 22.4% calcium carbonate filler.

Cigarettes A as smokers were manufactured according to the present invention. These cigarettes consist of cigarette cores 64 millimeters in length, 24.83 millimeters in circumference and filters of 20 millimeters in acetate cellulose. The density of the filler, cut from tobacco, was 248 milligrams per cubic centimeter.

Cigarette cores were wrapped from a paper permeability of 7 Coresta units weighing 36.6 grams per square meter.

LT 32S3 B

The paper had 4.9% calcium carbonate filler and 10.5% magnesium oxide filler.

Cigarettes 1-3 and Cigarettes A were smoked under standard mechanical smoking conditions, that is, a 35 cubic centimeter draw every two seconds to a 6 millimeter residue of tobacco core, and the total effluent per nicotine free cigarette type was measured. and water (PMWNF), total nicotine alkaloids (TNA), carbon monoxides (CO) and carbon dioxide (CO)₂). The average measured values ​​are shown in Table 1.

The predicted values ​​in Table 1 for Cigarettes A were calculated from the measurement results for Cigarettes 13. The predicted values ​​in this example were calculated based on the percentage reduction provided for each control cigarette corresponding to the by-pass components of the first control cigarette.

For example, the estimated size by method PMWNF for Cigarettes A is estimated at 28.6 (1-0.12) (1-0.09) = 22.9. 28.6 is the size according to the PMWNF method for the first control cigarette. 0.12 is the value under the PMWNF method for the first control cigarette minus the size of the second control cigarette expressed as a fraction of that size for the first control cigarette, ie the reduction ratio by the PMWNF method. 0.09 is the magnitude of the reduction ratio according to the PMWNF method for the third control cigarette for the respective first control cigarette.

The PMWNF for cigarette A measured by the method was 20.3. Thus, it can be seen that cigarettes according to the present invention have a synergistic reduced size value according to the PMWNF method. Synergistic decreases are also observed in total nicotine alkaloids, carbon monoxide and carbon dioxide.

Table 1

<td></td><td>Cigarettes</td><td>PMWNF</td><td>TNA</td><td>CO</td><td>CO₂</td><td>Withdrawals</td>

<td></td><td></td><td colspan="2">milligrams</td><td colspan="2">for one cigarette</td><td>quantity</td>

<td> 1</td><td></td><td> 28, 6</td><td> 5,5</td><td> 60, 6</td><td> 424</td><td> 9,4</td>

<td> 2</td><td></td><td> 25,1</td><td> 4,7</td><td> 65,3</td><td> 4 65</td><td> 10,0</td>

<td> 3</td><td></td><td> 26,0</td><td> 5,3</td><td> 51,4</td><td> 390</td><td> 9,8</td>

<td colspan="2">A Calculated</td><td> 22, 9</td><td> 4,5</td><td> 55, 6</td><td> 425</td><td> -</td>

<td>A</td><td>Measured</td><td> 20,3</td><td> 4,2</td><td> 42,4</td><td> 373</td><td> 11,1</td>

EXAMPLE 2

The first control batch of cigarettes (Cigarettes 1) and the second control batch of cigarettes (Cigarettes 2) were as in Example 1.

The third control batch of cigarettes - Cigarettes 4 - was the cigarette core 64 millimeters long, 24.77 millimeters round. The density of the cut tobacco filler in the cigarette cores was 252 milligrams per cubic centimeter. Cigarette cores were also wrapped in paper with a 6 Coresta permeability of 36.7 grams per square meter. The paper had a 19.6% calcium carbonate filler.

Cigarettes A were manufactured according to the present invention and were equivalent to Cigarettes A in Example 1.

Cigarettes 1, 2, 4 and A were smoked under standard mechanical conditions and measurements were made for a common by-pass cigarette of the following values: PMWNF, TNA, CO and CO₂. Measured averages are shown in Table 2, which also provides estimated values ​​for each component of the by-pass smoke flow. It can be seen that cigarettes according to the present invention exhibit a synergistic reduction in the lateral flow of smoke for each of the tested components.

The following examples illustrate the amount of components in the by-product smoke produced by smoking tobacco products wrapped in paper made in accordance with the present invention. In each case, the physical properties of the paper wrappers changed to some degree.

Table 2

<td>Cigarettes</td><td>PMWNF milligrams</td><td>TNA amai</td><td>CO for one ci &lt;</td><td>CO₂jaretei</td><td>Withdrawals quantity</td>

<td> 1</td><td> 28, 6</td><td> 5,5</td><td> 60, 6</td><td> 424</td><td> 9,4</td>

<td> 2</td><td> 25,1</td><td> 4,7</td><td> 65,3</td><td> 465</td><td> 10,0</td>

<td> 3</td><td> 26,1</td><td> 5,2</td><td> 46,0</td><td> 373</td><td> 9,8</td>

<td>A Calculated</td><td> 22,9</td><td> 4,4</td><td> 49,7</td><td> 407</td><td> -</td>

<td>A Measured</td><td> 20,3</td><td> 4,2</td><td> 42,4</td><td> 373</td><td> 11,1</td>

EXAMPLE 3

A batch of cigarettes consisting of conventional cigarette cores with a standard circumference of 59 millimeters and filters of 20 millimeters of acetate cellulose was made. The average filling density of the cut tobacco in the core of these cigarettes was 205 milligrams per cubic centimeter. The uniform tobacco blend was used to make all cigarettes and included about 40% of the expanded tobacco DIET sheets. Table 3 shows the data for each of the papers used in the manufacture of cigarettes A - E. The paper was processed using high concentration sodium acetate. The paper used for the manufacture of cigarette A is identical to that used for the manufacture of cigarette A in Examples 1 and 2.

Table 3

<td>Paper for cigarettes</td><td>A</td><td>B</td><td>C</td><td>D</td><td>E</td>

<td>Basic weight (g / m)</td><td> 36, 6</td><td> 37, 9</td><td> 37, 8</td><td> 37,4</td><td> 37, 0</td>

<td>% CaCO₃</td><td> 4,9</td><td> 5,2</td><td> 4,9</td><td> 4,4</td><td> 5, 0</td>

<td>% MgO</td><td> 10,5</td><td> 11,5</td><td> 11,8</td><td> 10,3</td><td> 10,3</td>

<td>Penetration (Coresta units)</td><td> 7,0</td><td> 7,0</td><td> 5,0</td><td> 5,0</td><td> 64*</td>

<td>% NaAc</td><td> 0</td><td> 2,1</td><td> 4,9</td><td> 6,25</td><td> 2,1</td>

The paper is electrostatically perforated to this degree of penetration.

NaAc = Sodium acetate

Each of these cigarettes was smoked in a standard machine, and the amount of smoke component contained in Table 4 was measured. Control Cigarette - Cigarette 5 was a product of similar size with a tobacco density of 246 milligrams per cubic centimeter. The paper used for cigarette production had a permeability of 50 Coresta units and a core weight of 29 grams per square meter. The paper had a mixture of 21% chalk and 2% sodium citrate and potassium citrate.

Table 4

<td>Cigarettes</td><td>PMWNF milig</td><td>TNA rains take</td><td>CO jnai course</td><td>co₂rays</td><td>Withdrawals quantity</td>

<td> 5</td><td> 25,8</td><td> 3, 5</td><td> 51</td><td> 421</td><td> 7,8</td>

<td>A</td><td> 16, 6 (36)</td><td> 2, 6 (26)</td><td> 34 (33)</td><td> 274 (40)</td><td> 7,5</td>

<td>B</td><td> 14,1 (45)</td><td> 2,7 (23)</td><td> 40 (22)</td><td> 303 (28)</td><td> 6,6</td>

<td>C</td><td> 10,7 (58)</td><td> 2,1 (40)</td><td> 36 (29)</td><td> 295 (30)</td><td> 7,4</td>

<td>D</td><td> 10,3 (60)</td><td> 2,0 (43)</td><td> 33 (35)</td><td> 305 (28)</td><td> 6,3</td>

<td>E</td><td> 14,7 (43)</td><td> 2,7 (23)</td><td> 35 (31)</td><td> 302 (28)</td><td> 7,8</td>

The numbers in parentheses represent the percentage decrease for the corresponding control level.

EXAMPLE 4

A batch of cigarettes from F to H having sizes similar to the cigarette in Example 3 was made. The same tobacco mixture as in Example 3 was used for the cigarettes according to Example 4, and the mixture turned on 40% expanded tobacco DIET sheets. The paper for cigarette A was treated with trisodium citrate in amounts of 3.3%, 5.2% and 10.1%, respectively.

The control cigarette was as in Example 3.

Table 5 shows the quantities of smoke by-product components present when cigarettes were smoked using a standard smoking device. By way of comparison, the amounts of Cigarette A and C by-product smoke are thus included in the table.

TABLE 5

<td>Cigarettes</td><td>PMWNF millig</td><td>TNA iris λ</td><td>co / • the course of the inn</td><td>co₂rays</td><td>Withdrawals quantity</td>

<td> 5</td><td> 25, 8</td><td> 3,5</td><td> 51</td><td> 421</td><td> 7,8</td>

<td>A</td><td> 16, 6 (36)</td><td> 2, 6 (26)</td><td> 34 (33)</td><td> 274 (40)</td><td> 7,5</td>

<td>B</td><td> 14,1 (45)</td><td> 2,7 (23)</td><td> 40 (22)</td><td> 303 (28)</td><td> 6, 6</td>

<td>C</td><td> 10,7 (58)</td><td> 2,1 (40)</td><td> 36 (29)</td><td> 295 (30)</td><td> 7,4</td>

<td>D</td><td> 10,3 (60)</td><td> 2, 0 (43)</td><td> 33 (35)</td><td> 305 (28)</td><td> 6,3</td>

<td>E</td><td> 14,7 (43)</td><td> 2,7 (23)</td><td> 35 (31)</td><td> 302 (28)</td><td> 7,8</td>

The numbers in parentheses represent the percentage decrease for the corresponding control level.

In this series of cigarettes, the tobacco blend was one and the same and the paper was treated with citrate. For cigarettes, the density of F - H has been reduced from an average level of 205 milligrams per cubic centimeter for Cigarettes A and C to 188 milligrams per cubic centimeter, 190 milligrams per cubic centimeter and 192 milligrams per cubic centimeter to determine if guaranteed at for such a reduction, the physical characteristics of the products are satisfactory.

The results obtained show that treatment with tricalcitrate in a concentration equivalent to sodium acetate provides an effect equivalent to that obtained with sodium acetate. In the main smoke stream (this data is not provided in the application), a slight but nonetheless significant decrease in CO / PMWNF paper treated with citrate as compared to paper treated with sodium acetate is observed with equal trigger acetate and sodium acetate actuations.

EXAMPLE 5

In this series of cigarettes, the paper according to the present invention was used in addition to having a reduced weight. The characteristics of the paper used for cigarette making are given in Table 6. The paper was treated with sodium acetate.

Table 6

<td>Paper for cigarettes</td><td>J</td><td>K</td><td>L</td>

<td>Basic weight (g / m)</td><td> 30,0</td><td> 31,4</td><td> 31,4</td>

<td>% CaCO₃</td><td> 3,7</td><td> 3,4</td><td> 3,5</td>

<td>% MgO</td><td> 13,7</td><td> 13,3</td><td> 14,0</td>

<td>Penetration (Coresta units)</td><td> 6</td><td> 6</td><td> 58*</td>

<td>% NaAc</td><td> 0,2</td><td> 3,1</td><td> 3,2</td>

* Paper is electrostatically perforated to this degree of penetration.

The cigarettes had the same sizes as the cigarettes in Examples 3 and 4 and incorporated the same tobacco blend containing 40% expanded tobacco DIET sheets.

Cigarettes were smoked in a standard smoking unit 10 and the amounts of by-product smoke components were measured. Data obtained during the measurements are presented

In Table 7.

Table 7

<td>Cigarettes</td><td>PMWNF until:</td><td>TNA quiet 5</td><td>co / go to go</td><td>CO₂rays</td><td>Withdrawals quantity</td>

<td> 5</td><td> 25, 8</td><td> 3,5</td><td> 51</td><td> 421</td><td> 7,8</td>

<td>J</td><td> 14,2 (45)</td><td> 2,5 (29)</td><td> 26 (49)</td><td> 271 (36)</td><td> 7,8</td>

<td>K</td><td> 11,4 (56)</td><td> 2,3 (34)</td><td> 31 (39)</td><td> 302 (28)</td><td> 7,1</td>

<td>L</td><td> 11,9 (54)</td><td> 2,5 (29)</td><td> 32 (37)</td><td> 316 (25)</td><td> 7,6</td>

The numbers in parentheses represent the percentage decrease for the corresponding control level.

Cigarettes I demonstrate the effect of paper weight loss on the amount of second-hand smoke components. Cigarettes K and L illustrate treatment with sodium acetate in the presence of side smoke, as shown previously.

EXAMPLE 6

In contrast, Example 5 produced a batch of cigarettes using a lower weight paper with a slightly higher permeability and a slightly higher amount of chalk. The characteristics of the paper used for cigarette making M - R (letter O was not used to designate the batch of cigarettes) are given in Table 8.

Table 8

<td>Paper for cigarettes</td><td>M</td><td>N</td><td>P</td><td>R</td>

<td>Basic weight (g / m²)</td><td> 33, 0</td><td> 34,7</td><td> 34,3</td><td> 36, 6</td>

<td>% MgO</td><td> 9,6</td><td> 8,9</td><td> 8,8</td><td> 9,8</td>

<td>% CaCO₃</td><td> 8,9</td><td> 8,9</td><td> 9,0</td><td> 7,1</td>

<td>Penetration (Coresta units)</td><td> 11</td><td> 9</td><td> 58*</td><td> 8</td>

<td>% NaAc</td><td> -</td><td> 3,1</td><td> 3,1</td><td> 4,7</td>

* Paper is electrostatically perforated to this degree of penetration.

Only the Cigarettes R. The tobacco mixture was made from this paper was the same as that used in the cigarette manufacture in the previous examples. The next batch of cigarettes, Cigarettes S, were made from the same paper used for Cigarettes R, but after its electrostatic perforation to a total penetration value of 58 Coresta units.

By way of comparison, Table 9 gives the by-pass data for Cigarettes R and S, A and T. Cigarette C paper was electrostatically perforated to 55 Coresta permeability and used for the production of Cigarette T.

Table 9

<td>Cigar rays</td><td>Density (mg cm '³</td><td>PMWNF TNA CO CO., LTD₂milligrams per cigarette</td><td>Withdrawals quantity</td>

<td>5 C</td><td> 246 183</td><td> 25,8 3,5 51 421 10,4 2,0 30 261 (60) (43) (41) (38)</td><td> 7,8 6,0</td>

<td>Cigar</td><td>Density</td><td>PMWNF</td><td>TNA</td><td>co</td><td>co₂</td><td>Withdrawals</td>

<td>rays</td><td>(mg cm '³</td><td colspan="2">milligrams</td><td colspan="2">for one cigarette</td><td>quantity</td>

<td>T</td><td> 186</td><td> 11,3 (56)</td><td> 2,4 (31)</td><td> 33 (35)</td><td> 282 (33)</td><td> 6,0</td>

<td>R</td><td> 183</td><td> 13, 6 (47)</td><td> 2,3 (34)</td><td> 33 (35)</td><td> 274 (35)</td><td> 6,1</td>

<td>S</td><td> 177</td><td> 13,7 (47)</td><td> 2, 6 (25)</td><td> 36 (29)</td><td> 297 (29)</td><td> 6,0</td>

The numbers in parentheses represent the percentage decrease for the corresponding control level.

EXAMPLE 7

Cigarette U and W batches were prepared using high dispersion chalk on a strongly formed surface. Table 10 shows the paper characteristics for Cigarettes U - X.

Cigarettes U - X were smoked in a standard smoking unit and the amount of components in the by - pass smoke was measured. Results are presented

In Table 11.

Comparing Cigarettes U and A, it is clear that replacing magnesium oxide with a strongly formed surface with chalk does not produce such positive results as magnesium oxide in terms of a noticeable reduction in the PMWNF flue gas stream.

Table 10

<td>Paper for cigarettes</td><td>U +</td><td>v</td><td>w +</td><td>X</td>

<td>Basic weight (g / m)</td><td> 36,7</td><td> 35, 6</td><td> 36,3</td><td> 38,2</td>

<td>% CaCO₃</td><td> 16,2</td><td> 9,9</td><td> 10, 6</td><td> 8,0</td>

<td>% MgO</td><td> -</td><td> 4,2</td><td> 4,6</td><td> 4,6</td>

<td>Penetration (Coresta units)</td><td> 4</td><td> 5</td><td> 6</td><td> -</td>

<td>% NaAc</td><td> -</td><td> -</td><td> -</td><td> 4,3</td>

+ Chalk on a strongly formed surface.

Table 11

<td>Cigar</td><td>Density</td><td>PMWNF</td><td>TNA</td><td>co</td><td>CO₂</td><td>Withdrawals</td>

<td>rays</td><td>(mg cm '³</td><td colspan="2">milligrams</td><td colspan="2">for one cigarette</td><td>quantity</td>

<td> 5</td><td> 246</td><td> 25,8</td><td> 3,5</td><td> 51</td><td> 421</td><td> 7,8</td>

<td>U +</td><td> 205</td><td> 17,4 (33)</td><td> 2,8 (20)</td><td> 32 (37)</td><td> 266 (37)</td><td> 7,5</td>

<td>V</td><td> 206</td><td> 17,8 (31)</td><td> 2,7 (23)</td><td> 30 (41)</td><td> 265 (37)</td><td> 7,6</td>

<td>W +</td><td> 209</td><td> 17,5 (32)</td><td> 2,9 (17)</td><td> 35 (31)</td><td> 286 (32)</td><td> 7,5</td>

<td>X</td><td> 206</td><td> 13,7 (47)</td><td> 2,5 (29)</td><td> 36 (29)</td><td> 283 (33)</td><td> 7,0</td>

Numbers in parentheses represent the percentage, corresponding to the control level.

+ Chalk on a strongly formed surface.

EXAMPLE 8

A batch of cigarettes has been made to illustrate the effect shown by the paper produced by the present invention with respect to the extraneous smoke flow components using such paper for wrapping tobacco tobacco cores.

The Cigarette Batch has enabled a series of control cigarettes, more specifically Cigarettes 1, 2, 3, 4, mentioned earlier in this application. In addition, control Cigarettes 6, 7, 8 and 9 were manufactured. Cigarette paper 1 was treated with flammable additives such as sodium acetate, tricalcium citrate, potassium orthophosphate and potassium tartrate as shown in Table 12. Concentration data expressed as percentage by weight of total paper weight g / m of processed paper.

Table 12

<td>Paper for cigarettes</td><td>Appendix</td><td>Additive content% from paper weight</td>

<td> 6</td><td>Sodium acetate</td><td> 7,2</td>

<td> 7</td><td>Tricalcium Citrate</td><td> 5,2</td>

<td> 8</td><td>Potassium orthophosphate</td><td> 5,9</td>

<td> 9</td><td>Potassium tartrate</td><td> 5,4</td>

Cigarettes wrapped in paper produced in accordance with the present invention have been manufactured by treating the paper used to make Cigarettes A with such flammable additives as used in the manufacture of Cigarette 6-9 batches. The percentage of the component to be processed, as shown in Table 13, is the percentage by weight of the paper to be processed. Cigarettes in this batch are marked with indexes AA - DD.

It can be seen that there is a relatively good correlation between the concentrations of the control and those of the test cigarette.

Table 13

<td>Paper for cigarettes</td><td>Appendix</td><td>Additive content% from paper weight</td>

<td>AA</td><td>Sodium acetate</td><td> 5,0</td>

<td>BB</td><td>Tricalcium Citrate</td><td> 5,2</td>

<td>CC</td><td>Potassium orthophosphate</td><td> 6,0</td>

<td>DD</td><td>Potassium Cartrate</td><td> 5,2</td>

Table 14 below shows the physical characteristics of such cigarettes. The sizes of these smokers were as usual, i.e. the tobacco core was 64 millimeters long and standard circumference and the filter made of cellulose acetate was 20 millimeters long.

The same tobacco blend was used as in Examples 1 and 2, i.e., 22% stems, 3% tobacco leaves and 75% leaf tobacco, of which 12% was extended leaf DIET.

Table 14

<td>A cigarette</td><td>Density (mg / cm³)</td><td>Penetration (Coresta pcs.)</td><td>Circle length (mm)</td>

<td>AA</td><td> 245</td><td> 5,0</td><td> 24,76</td>

<td> 6</td><td> 247</td><td> 49</td><td> 25,08</td>

<td>BB</td><td> 247</td><td> 7,0</td><td> 24,74</td>

<td> 7</td><td> 247</td><td> 55</td><td> 24,81</td>

<td>CC</td><td> 246</td><td> 8, 0</td><td> 24,77</td>

<td> 8</td><td> 245</td><td> 54</td><td> 24,83</td>

<td>DD</td><td> 252</td><td> 6, 0</td><td> 24,75</td>

<td> 9</td><td> 243</td><td> 54</td><td> 24, 91</td>

These cigarettes were smoked in a standard smoking unit and the amount of components in the side smoke was measured. Table 15 shows the results obtained for control cigarettes 6-9.

Table 15

<td>Cigarettes</td><td>PMWNF TNA CO CO? milligrams per cigarette</td><td>Withdrawals quantity</td>

<td> 6 7 8 9</td><td> 22,5 4,8 64 459 23,3 5,1 68 488 25,1 4,6 52 407 25,7 5,2 57 421</td><td> 6,9 6,5 8.7 6.8</td>

Using the data in Table 15 and the data for other control cigarettes, more specifically Cigarettes 1, 2, and 3, it is possible to calculate the exact amount of components in the by-pass flow, as was done

In Example 1. Also, given that there are currently three variable parameters of paper characteristics, i.e. the effect of magnesium oxide filler, the effect of reduced air permeability and the effect of flammable additive, the default value for PMWNF Cigarettes AA is calculated. this way: 28.6 (1-0.12) (1-0.09) (1-0.21) = 18.1 where 0.21 is the value of PMWNF for Cigarettes 1 minus this value for Cigarettes 6 expressed as values part for Cigarettes 1.

The measured value for PMWNF Cigarettes AA was 13.6. Thus, it can be seen that the cigarettes manufactured according to the present invention have a synergistic reduction in PMWNF.

Table 16 gives the calculated and measured values ​​for AA - DD Cigarettes. Cigarette 3 control lot used in these calculations as in Example 1.

Table 16

<td>Cigarettes</td><td>PMWNF milligram</td><td>TNA imai vi «</td><td>CO snai no</td><td>CO₂curette</td><td>Withdrawals quantity</td>

<td>AA Calculated</td><td> 18, 1</td><td> 3,9</td><td> 59</td><td> 459</td><td></td>

<td>AA Measured</td><td> 13, 6</td><td> 3, 6</td><td> 44</td><td> 375</td><td> 9,2</td>

<td>BB Calculated</td><td> 18, 6</td><td> 4,2</td><td> 62</td><td> 489</td><td></td>

<td>BB Measured</td><td> 17,4</td><td> 4,4</td><td> 56</td><td> 419</td><td> 8,0</td>

<td>CC Calculated</td><td> 20,2</td><td> 3, 8</td><td> 47</td><td> 408</td><td></td>

<td>CC Measured</td><td> 15,2</td><td> 3, 6</td><td> 55</td><td> 395</td><td> 10, 7</td>

<td>DD Calculated</td><td> 20, 6</td><td> 4,3</td><td> 52</td><td> 421</td><td></td>

<td>DD Measured</td><td> 15,5</td><td> 4,3</td><td> 44</td><td> 363</td><td> 8,3</td>

Table 17 gives the calculated and measured values ​​for AA - DD Cigarettes. The control lot for Cigarette 4 used in this calculation as Example 2.

Table 17

<td>Cigarettes</td><td>PMWNF milligram</td><td>TNA may take</td><td>CO snai no</td><td>CO₂curette</td><td>Withdrawals quantity</td>

<td>AA Calculated</td><td> 18,1</td><td> 3,9</td><td> 53</td><td> 439</td><td></td>

<td>AA Measured</td><td> 13, 6</td><td> 3, 6</td><td> 44</td><td> 375</td><td> 9,2</td>

<td>BB Calculated</td><td> 18, 6</td><td> 4,1</td><td> 56</td><td> 468</td><td></td>

<td>BB Measured</td><td> 17,4</td><td> 4,4</td><td> 56</td><td> 419</td><td> 8,0</td>

<td>CC Calculated</td><td> 20,2</td><td> 3,7</td><td> 42</td><td> 390</td><td></td>

<td>CC Measured</td><td> 15,2</td><td> 3, 6</td><td> 55</td><td> 395</td><td> 10,7</td>

<td>DD Calculated</td><td> 20, 6</td><td> 4,2</td><td> 47</td><td> 403</td><td></td>

<td>DD Measured</td><td> 15,5</td><td> 4,3</td><td> 44</td><td> 363</td><td> 8,3</td>

The quantitative content of the secondary smoke components for each sample was measured using the apparatus depicted in FIG. 2 GB in application no. 8820498.7 filed by this applicant, to which the applicant draws the attention of the expert

EXAMPLE 9

The paper was made, weighing 45-50 grams per square meter and a permeability of about 5 Coresta units. The paper contained between 6 percent and 8 percent magnesium oxide and about 3 to 5 percent calcium carbonate. This paper is indexed EE. This paper was processed to the degree that it contained 4.5 percent sodium acetate, and the resulting paper was marked with the FF index. The FF paper was electrostatically perforated to a total permeability of 65 Coresta units.

When all types of paper with the characteristics described in the examples were used in cigarette production, a satisfactory ash formation was observed during cigarette smoking, with little or no foreign taste, and the paper wrappers had a high quality, uniform appearance.

In the descriptions of the experiments, all cigarettes manufactured using the paper of the invention did not have ventilation ducts.