CN111065283B

CN111065283B - Wrapping paper for smoking articles

Info

Publication number: CN111065283B
Application number: CN201880054800.8A
Authority: CN
Inventors: 小野广善
Original assignee: JT International SA
Current assignee: JT International SA
Priority date: 2017-08-24
Filing date: 2018-08-14
Publication date: 2022-04-26
Anticipated expiration: 2038-08-14
Also published as: KR20200045493A; KR20240155338A; EP3654785A1; ES2919339T3; EP3654785B1; EA202090288A1; CN111065283A; EP3654784A1; EP3446573A1; CN111031815B; EA038708B1; WO2019038133A1; JP2020531031A; EA202191093A1; EA202090289A1; US20200163373A1; WO2019038136A1; PL3446573T3; CN111031815A; KR102715379B1

Abstract

The invention relates to a smoking article comprising a wrapping paper, wherein the wrapping paper comprises a paper porosity of 30 to 60CU, at least one burn additive in an amount of 0.3 to 0.7wt. -% based on the total amount of the wrapping paper, and a filler.

Description

Wrapping paper for smoking articles

Technical Field

The present invention relates to a wrapping paper for a smoking article, and a smoking article comprising the wrapping paper.

Background

For most smokers, smoking provides a satisfactory smoking experience with a single cigarette having a number of openings of about 7 to 12 depending on the length of the cigarette and its diameter under standard smoking conditions (ISO). In order to achieve this desired number of suction openings, several solutions are known from the prior art.

US 5,379,788 teaches a cigarette system having a greater number of puffs, i.e. at least about 14 puffs, than a conventional cigarette of the same cigarette size and length. The cigarette is intended to be partially smoked, extinguished, stored and then re-smoked. The filter is attached to the tobacco rod of a cigarette that is configured to provide the smoker with a per-puff delivery profile of tar, nicotine, and flavor that is nearly identical for two puffs of the cigarette. Greater than normal puff count is achieved by implementing slower burning tobacco, greater tobacco density, and/or burn rate inhibiting paper.

US 2011/083,687 a1 discloses the burn rate of smoking articles which is reduced by the addition of a filler to the paper having a median particle size of greater than about 2.5 microns and thereby increasing the puff count.

Japanese patent No. 2834325 discloses a cigarette in which cut tobacco density is set to 300mg/cc or more in order to increase the combustion rate of cut tobacco rods, thereby increasing the number of suction openings provided by the cigarette.

The problem of the present invention is to provide a wrapping paper that can increase the number of puffs of a smoking article without changing the length or diameter of the cigarette and without affecting the TNCO level of the smoking article.

Disclosure of Invention

The inventors have found that by providing a wrapper having a certain porosity and an amount of a burn additive, the puff count of the smoking article can be increased.

A first aspect of the invention relates to a wrapping paper for a smoking article, the wrapping paper comprising a base paper, wherein the base paper comprises a fibrous material, a filler material, and one or more burn additives, wherein the base paper has a paper porosity of 10 to 60CU, and the total amount of burn additives is 0.1 to 0.7 wt.% (based on the dry weight of the base paper).

In another aspect of the invention, a smoking article is disclosed comprising a charge of smoke-producing material surrounded by wrapping paper according to the first aspect of the invention.

Further aspects and embodiments of the invention are disclosed in the dependent claims and can be taken from the following description and examples without being limited thereto.

Drawings

The drawings should illustrate embodiments of the invention and convey a further understanding of the invention. The drawings are included to provide an explanation of the concepts and principles of the invention. Other embodiments and many of the stated advantages can be derived with respect to the figures.

Figure 1 shows an enlarged schematic perspective view of an example of a smoking article according to the invention. The smoking article 40 shown in figure 1 is provided with a smokeable rod 410 having a front end portion 410a and a base end portion 410b constituting a lit end, and a filter 420 having a front end portion 420a and a base end portion 420 b. In the cigarette rod 410 and the filter 420, the base end portion 410b of the smokable rod and the front end portion 420a of the filter abut against each other, whereby the smokable rod 410 and the filter 420 are connected by tipping paper 430. The smokable rod member 410 is constituted by a rod member 411 of tobacco filler and wrapping paper 412 which wraps the circumferential outer surface of the rod member 411 of tobacco filler. The wrapping paper 412 is made of wrapping paper according to the present invention.

Figure 2 is a schematic perspective view, partially broken away, showing an example of a cigarette wrapped by cigarette paper having a stripe-shaped burn inhibiting area in accordance with one embodiment of the invention.

The cigarette 10 has a rod 11 in the form of a cylinder made of tobacco filler 13 wrapped with a wrapping paper 12 according to the invention. The conventional filter 15 may be attached to the proximal end (i.e., the downstream end in the direction of inhalation) 11b of the cigarette 11 according to a conventional method by using the tipping paper 14.

A plurality of stripe-shaped combustion suppressing areas 122, which are coated as will be explained in the following description, are formed on one surface of the base paper 121 constituting the wrapping paper 12 of the present invention. These strip-shaped combustion suppressing regions 122 are formed separately from each other in the circumferential direction of the tobacco rod 11.

The non-combustion suppressing region 123 is formed between the adjacent stripe-shaped combustion suppressing regions 122. Since the regions 123 are constituted by a part of the base paper 121, they can be burned in a normal smoking state. Therefore, the regions 123 each serve as a non-combustion-suppressing region. For example, the widths of the stripe-shaped combustion suppressing regions 122 in the circumferential direction may each be 1 to 6 mm. The distance between adjacent combustion suppression areas 122 may be 2 to 20 mm.

In the cigarette shown in fig. 2, a non-combustion-inhibiting region 124 may be provided for a region covering a distance d from the tip 11a of the base paper 121.

Figure 3 is a schematic perspective view, partially broken away, showing an example of a cigarette wrapped with cigarette paper having an annular band-shaped burn inhibiting area in accordance with another embodiment of the invention.

Cigarette 20 has a structure similar to that of cigarette 10 shown in figure 2, except for the structure of the burn inhibiting area in the wrapping paper. Therefore, in fig. 3, the same elements as those of fig. 2 are assigned the same reference numerals, and an explanation thereof is omitted.

In the cigarette 20 shown in fig. 3, a plurality of annular band-shaped burn inhibiting regions 211 are formed on the base paper 121 of the wrapping paper 21 that wraps the tobacco filler 13, thereby defining burn inhibiting regions. These annular band-shaped combustion suppressing regions 211 are formed separately from each other in the longitudinal direction of the tobacco rod 11.

The non-combustion suppressing region 212 is formed between adjacent annular band-shaped combustion suppressing regions 211. Since the non-combustion-suppressing regions 212 are constituted by a part of the base paper 121, they can be combusted in a normal smoking state. Therefore, the regions 212 each serve as a non-combustion-suppressing region like the region 123 in fig. 2. For example, the widths of the annular band-shaped combustion suppressing regions 211 in the longitudinal direction may each be 4 to 7 mm. The distance between adjacent combustion suppression areas 24 may be 18 to 25 mm.

Detailed Description

Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

All values given in this disclosure are to be understood as being supplemented by the word "about" unless clearly contradicted by context.

The smoking articles referred to herein are not particularly limited and may be, for example, cigarettes, cigarillos, etc. They typically have a generally cylindrical rod-shaped configuration and comprise a charge, roll, or column of smoke-producing material, such as comminuted tobacco (e.g. in the form of shredded filler), surrounded by a paper wrapper forming a so-called "cigarette". Cigarettes or cigarillos also typically have cylindrical filter elements in end-to-end aligned relation with the tobacco rod. The filter element may, for example, comprise a plug of cellulose acetate tow and the tow circumscribes a wrapper material referred to as a "plug wrap". Typically, the filter element is attached to one end of the tobacco rod using an circumscribing wrapping material known as a "tipping wrapper". The filter element wrapped by the tipping wrapper is referred to as a "mouthpiece element".

As used herein, wt. -% is to be understood as a weight percentage based on the dry weight of the base paper of the wrapping paper, unless explicitly stated otherwise herein. In the present disclosure, in certain embodiments, all amounts given in wt. -% total up to 100wt. -%. Thus, the weight percentages are calculated by dividing the mass of each component by the dry mass of the base paper.

TNCO levels referred to herein represent tar, nicotine, and carbon monoxide levels and may be measured by any suitable method. In the present invention, this is done according to ISO 3308: 2012.

The notation "CU" herein designates the core STA air permeability units typically used by smoking article designers in paper specifications. The core STA air permeability units are defined as: "across 1 square centimeter (cm) with an applied pressure differential of 1 kilopascal (kPa)²) Air volume flow rate (in cubic centimeters per minute (cm) of sample substrate (c)³Min)), and measured according to ISO 6565: 2011.

The number of puffs of the smoking article may be measured by any suitable method. In the present invention, this is done according to ISO 3308: 2012.

The present invention relates to a wrapping paper for a smoking article, the wrapping paper comprising a base paper, wherein the base paper comprises a fibrous material, a filler material, and one or more burn additives, wherein the base paper has a paper porosity of 10 to 60CU, and the total amount of burn additives is 0.1 to 0.7 wt.% (based on the dry weight of the base paper). By providing a wrapper with such porosity and amount of burn additive, the puff count of the smoking article may be increased.

In certain embodiments of the present wrapping paper, the base paper has a paper porosity of 10 to 50CU, for example 15 to 45 CU. For example, in some embodiments, the base paper has a sheet porosity of 10 to 20CU, such as 13 to 17CU, such as 15 CU. In other embodiments, the base paper has a sheet porosity of 25 to 35CU, such as 28 to 32CU, such as 30 CU. In a further embodiment, the base paper has a sheet porosity of 40 to 50CU, such as 43 to 47CU, such as 45 CU. This further increases the number of smoking article puffs.

In certain embodiments of the present wrapping paper, the amount of burn additive contained in the base paper is 0.2 to 0.6wt. -%, e.g. 0.3 to 0.5wt. -%, based on the dry weight of the base paper. For example, in some embodiments, the total amount of burn additive is an amount of 0.2 to 0.4wt. -%, e.g. 0.3wt. -%, based on the dry weight of the base paper. In other embodiments, the total amount of burn additive is an amount of 0.3 to 0.5wt. -%, e.g. 0.4wt. -%, based on the dry weight of the base paper. In a further embodiment, the total amount of burn additive is an amount of 0.4 to 0.6wt. -%, e.g. 0.5wt. -%, based on the dry weight of the base paper. This further increases the number of smoking article puffs.

In certain embodiments of the present wrapsheet, the burn additive is selected from the group consisting of: citrate salts (e.g., sodium and potassium citrate), acetate salts (e.g., sodium and potassium acetate), phosphate salts (e.g., sodium and potassium phosphate), tartrate salts (e.g., sodium and potassium tartrate), nitrate salts (e.g., sodium and potassium nitrate), or mixtures thereof.

The burn additive is not particularly limited so long as the burn additive is suitable for use in a smoking article. In certain embodiments, citrate is used.

In certain embodiments of the present wrapping paper, the amount of filler in the base paper is 17 to 28wt. -%, e.g. 20 to 25wt. -%, based on the dry weight of the base paper. For example, the amount of filler in the base paper is 19 to 25wt. -%, e.g. 21 to 23wt. -%, e.g. 22wt. -%, based on the dry weight of the base paper. In other embodiments, the amount of filler in the base paper is 22 to 28wt. -%, such as 24 to 26wt. -%, such as 25wt. -%, based on the dry weight of the base paper. In a further embodiment, the amount of filler in the base paper is 17 to 23wt. -%, such as 19 to 21wt. -%, such as 20wt. -%, based on the dry weight of the base paper. This amount of filler provides sufficient resistance to manufacturing forces experienced by the wrapping paper during high speed manufacturing and also allows the desired opacity of the wrapping paper to be obtained.

In certain embodiments of the present smoking article comprising wrapping paper, the filler in the wrapping paper is selected from the group consisting of: calcium carbonate (e.g., Precipitated Calcium Carbonate (PCC) or Ground Calcium Carbonate (GCC), kaolin, clay, talc, titanium dioxide, alumina trihydrate, Precipitated Silica and Silicates (PSS), and mixtures thereof.

Like the burn additive, the filler is not particularly limited so long as the filler is suitable for use in a smoking article. In certain embodiments, calcium carbonate is used.

In one embodiment, the paper porosity of the base paper is 10 to 20CU, such as 13 to 17CU, such as 15CU, the total amount of burn additive is in an amount of 0.2 to 0.4wt. -%, such as 0.3wt. -%, based on the dry weight of the base paper, and the amount of filler in the base paper is 19 to 25wt. -%, such as 21 to 23wt. -%, such as 22wt. -%, based on the dry weight of the base paper.

In another embodiment, the paper porosity of the base paper is 25 to 35CU, such as 28 to 32CU, such as 30CU, the total amount of burn additive is in an amount of 0.3 to 0.5wt. -%, such as 0.4wt. -%, based on the dry weight of the base paper, and the amount of filler in the base paper is 22 to 28wt. -%, such as 24 to 26wt. -%, such as 25wt. -%, based on the dry weight of the base paper.

In another embodiment, the paper porosity of the base paper is 40 to 50CU, such as 43 to 47CU, such as 45CU, the total amount of burn additive is in an amount of 0.4 to 0.6wt. -%, such as 0.5wt. -%, based on the dry weight of the base paper, and the amount of filler in the base paper is 17 to 23wt. -%, such as 19 to 21wt. -%, such as 20wt. -%, based on the dry weight of the base paper.

According to certain embodiments, the balance of 100wt. -% of the dry weight of the base paper is essentially filler and fibrous material.

In certain embodiments of the present wrapping paper, the base paper has a basis weight of 20 to 26g/m²E.g. 21 to 24g/m²Or for example 23 to 25g/m²E.g. 24g/m². By providing a base paper having a basis weight within these ranges, the desired opacity of the wrapping paper can be achieved while controlling the level of CO.

In certain embodiments of the present wrapping paper, the base paper has a diffusion capacity of 1.0 to 2.0cm/s, such as 1.0 to 1.8cm/s, or such as 1.2 to 2.0cm/s, or such as 1.2 to 1.8cm/s, or such as 1.2 to 1.6cm/s, or such as 1.4 to 1.8cm/s, or such as 1.4 to 1.6 cm/s. The diffusion capacity of the wrapping paper was measured in the present invention according to CORESTA recommendation method No. 77 (CRM No. 77 at 4 months 2014).

In one embodiment of the invention, the wrapping paper may be used for "low ignition propensity" smoking articles. A "low ignition propensity" smoking article is one that is designed to be less prone to ignite home furnishings and equipment (e.g., soft home furnishings such as sofas or mattresses) than conventional cigarettes. Ideally, a low ignition propensity smoking article will continue to burn when, for example, hanging freely in the holder of an ashtray or when held in the hand without smoking ("free burn"). The tendency of a cigarette to extinguish during free-burn is known as "self-extinguishment".

The ability of the smoking article to extinguish, or to generate sufficient heat to continue combustion and thus potentially cause ignition of, bedding or upholstered furniture (known as LIP) may be measured by any suitable method. In the present invention, this is done according to ISO 12863: 2010.

The likelihood of the smoking article extinguishing on combustion in free air (known as FASE) may be measured by any suitable method. In the present invention, this is done according to ISO 12863: 2010.

In some embodiments of the present wrapping paper, the base paper may include a plurality of burn inhibiting regions disposed separately from one another. The burn inhibiting region may be provided on a surface of the base paper or embedded within a matrix of the base paper. The plurality of burn inhibiting regions may be provided on the same surface of the base paper. Alternatively, one or more of the plurality of burn inhibiting regions may be provided on a first surface of the base paper, and the remaining of the plurality of burn inhibiting regions may be provided on a second, opposite surface of the base paper.

Therefore, the wrapping paper is formed of a base paper, and optionally, a combustion-inhibiting region is provided in the base paper. Since the region of the wrapping paper outside the combustion-inhibiting region is considered to be a non-combustion-inhibiting region, which is the same as the base paper, the terms "non-combustion-inhibiting region" and "base paper" are used interchangeably herein.

The shape and amount of these burn suppression areas are not further limited and may vary according to the particular needs of the smoking article. In certain embodiments, the combustion-inhibiting region is in the form of a strip. In one embodiment, all of the strips are parallel to each other. In another embodiment, at least two strips are non-parallel to each other.

These burn inhibiting regions may contain additives that reduce the diffusion capability of the base paper. The additive which may be applied to the wrapper may be any additive used in the art to reduce the ignition propensity of a smoking article.

In certain embodiments of the present wrapsheet, the burn inhibiting region comprises at least one additive that reduces the diffusion capability of the base paper, wherein the additive is selected from the group consisting of: alginates, polyvinyl alcohol, polyvinyl acetate (including partially hydrolyzed derivatives and copolymers), modified and unmodified starches, cellulose acetate derivatives (such as carboxymethyl cellulose, ethyl cellulose, and hydroxymethyl cellulose), and combinations thereof. The one or more additives may further include inorganic ions such as phosphates, monovalent or divalent metal salts, silica, and other agents known in the art for modifying combustion rates, combinations thereof, and the like. The additive may still further comprise a natural gum such as guar gum or the like.

The additive may be applied to the wrapping paper in a liquid carrier, which may be in the form of a solution, suspension, emulsion, or combination thereof. The liquid carrier can be aqueous, non-aqueous, or a combination thereof, and can include an emulsifier depending on the nature of the additive.

In one embodiment, a suspension of the additive may be applied within an aqueous carrier. The aqueous carrier penetrates the base paper, thereby transporting the additive into its matrix. Once the carrier evaporates, the additive remains within the base paper matrix, where it may reduce the ability to diffuse prior to or during combustion of the smoking article. Once applied to the base paper, the liquid carrier is allowed to evaporate, allowing the wrapping paper to dry and the additives to be placed within the matrix of the base paper.

In certain embodiments of the present wrapping paper, the diffusion capability of the burn inhibition zone is from 0.10 to 0.35cm/s, such as from 0.15 to 0.35cm/s, or such as from 0.10 to 0.30cm/s, or such as from 0.15 to 0.25cm/s, or such as from 0.20 to 0.30cm/s, or such as from 0.20cm/s to 0.25 cm/s.

In certain embodiments of the present wrapping paper, the ratio of diffusion capacity between the burn inhibiting area and the non-burn inhibiting area in the wrapping paper is in the range of 5% to 35%, such as 10% to 35%, or such as 15% to 35%, or such as 5% to 30%, or such as 10% to 30%, or such as 15% to 30%, or such as 10% to 25%, or such as 15% to 25%. In other words, the ratio between the diffusion capacity in the burn inhibiting area and the diffusion capacity of the base paper is comprised between 5% and 35%, such as 10% and 35%, or such as 15% and 35%, or such as 5% and 30%, or such as 10% and 30%, or such as 15% and 30%, or such as 10% and 25%, or such as 15% and 25%. By providing this ratio of diffusion capacity between the burn inhibiting region and the non-burn inhibiting region (i.e. the base paper), a low ignition propensity smoking article having a reduced impact on flavour may be provided.

In certain embodiments of the present wrapping paper, the fibrous material is a cellulosic fibrous material.

The invention further relates to a smoking article comprising a wrapper as in the previous embodiments and wherein the wrapper surrounds a charge, roll or column of smoke-producing material to form a cigarette.

In certain embodiments of the present smoking article, the burn inhibiting areas are in the form of strips extending in the longitudinal direction of the tobacco rod and spaced from each other in the circumferential direction of the tobacco rod when the tobacco rod is wrapped with the wrapping paper.

In certain embodiments of the present smoking article, the burn inhibiting areas are in the form of circular bands extending in the circumferential direction of the tobacco rod and spaced from one another in the longitudinal direction of the tobacco rod when the tobacco rod is wrapped with the wrapping paper.

Without being bound by a particular theory, the positive influence of the invention, i.e. the combination of increased number of suction openings without changing the cigarette length or diameter, is due to the particular combination of paper porosity of 10 to 60CU and at least one combustion additive in an amount of 0.1 to 0.7wt. -% as described above.

The above embodiments may be combined in any combination, if appropriate. Further possible embodiments and implementations of the invention also include combinations of features not explicitly mentioned previously or later with respect to the examples of the invention. In particular, the person skilled in the art will also add individual aspects as improvements or supplements to the corresponding basic forms of the invention.

Examples of the invention

The present invention will now be described in detail with reference to examples thereof. However, these examples are illustrative and do not limit the scope of the invention.

Example 1

Two 84mm cigarettes with increased puff count were prepared from the same tobacco cut. Both cigarettes had 63mm cigarettes attached to a 21mm filter by tipping paper. These filters are cut from the same filter rod and the tipping paper is cut from the same roll. The cigarettes of cigarette a are wrapped with prior art wrapping paper (paper a), while cigarette B is wrapped with wrapping paper according to the invention (paper B). In both wrap papers, the burn inhibiting areas were 6mm wide annular bands spaced 18mm apart, similar in construction to that described in connection with FIG. 3. The specifications of the respective wrapping papers are indicated in table 1 below.

TABLE 1

The cigarettes were measured under ISO 3308:2012 conditions to determine their TNCO levels and their corresponding puff counts. The self-extinguishment of these cigarettes when positioned on a surface (ISO 12863: 2010-known as LIP) and when burned in free air (ISO 12863: 2010-known as FASE) was also measured. The results are shown in table 2 below. It was found that the wrapping paper B increased the puff count of cigarette B by 1.3 while maintaining very similar TNCO levels. Paper B also shows a high self-extinguishing rate when positioned on a surface and significantly improved performance when free air is burned.

TABLE 2

	Cigarette A	Cigarette B
			Tar oil	9.8mg	10.0mg
Nicotine	0.80mg	0.85mg
			CO	9.0mg	9.3mg
Number of suction ports	6.8	8.1
			LIP	100％	94％
FASE	30％	8％

Example 2

Two 84mm low ignition propensity cigarettes were prepared from the same cut tobacco. Both cigarettes had 57mm cigarettes attached to a 27mm filter by tipping paper. These filters are cut from the same filter rod and the tipping paper is cut from the same roll. The cigarettes C were wrapped with the prior art wrapping paper (paper a) of example 1, while the cigarettes D were wrapped with the wrapping paper according to the invention (paper B) of example 1.

The cigarettes were measured under ISO 3308:2012 conditions to determine their TNCO levels and their corresponding puff counts. The self-extinguishment of these cigarettes when positioned on a surface (ISO 12863: 2010-known as LIP) and when burned in free air (ISO 12863: 2010-known as FASE) was also measured. The results are shown in table 3 below. It was found that the wrapping paper B increased the puff count of cigarette B by 0.9 while maintaining very similar TNCO levels. Paper B continues to show a high self-extinguishing rate when positioned on a surface and significantly improved performance when free air is burned.

TABLE 3

	Cigarette C	Cigarette D
			Tar oil	8.0	8.1
Nicotine	0.62	0.68
			CO	9.1	9.2
Number of suction ports	5.6	6.5
			LIP	98％	95％
FASE	38％	23％

Example 3

Three 84mm cigarettes were prepared from the same tobacco shreds. The several cigarettes each had a 57mm cigarette attached to a 27mm filter by tipping paper. These filters are cut from the same filter rod and the tipping paper is cut from the same roll. The pieces of cigarette E are wrapped with a wrapping paper (paper E) of the prior art, cigarette F is wrapped with a first wrapping paper (paper F) according to the invention, and cigarette G is wrapped with a second wrapping paper (paper G) according to the invention. The specifications of the respective wrapping papers are indicated in table 4 below.

TABLE 4

The cigarettes were measured under ISO 3308:2012 conditions to determine their TNCO levels and their corresponding puff counts. The results are shown in table 5 below. The wrapping papers F and G were found to increase the puff count of cigarettes F and G by 1.0 and 1.2, respectively, while maintaining TNCO levels very similar to those measured for cigarette E.

TABLE 5

	Cigarette E	Cigarette F	Cigarette G
				Tar oil	6.0	6.0	6.3
Nicotine	0.6	0.5	0.5
				CO	6.8	5.7	5.9
Number of suction ports	6.1	7.1	7.3

Claims

1. A wrapping paper for a smoking article, the wrapping paper comprising a base paper, wherein the base paper comprises a fibrous material, a filler material, and one or more burn additives, wherein:

a. the basis weight of the base paper was 24g/m²；

b. The base paper has a paper porosity of 15 to 45 CU; and is

c. The total amount of burn additive is 0.1 wt% to 0.5 wt% based on the dry weight of the base paper.

2. The wrapping paper of claim 1, wherein the burn additive is selected from the group consisting of: citrate, acetate, phosphate, tartrate, nitrate, or mixtures thereof.

3. Wrapping paper according to claim 1, wherein the amount of filler material is 17 to 28 wt% based on the dry weight of the base paper.

4. The wrapping paper of claim 1, wherein the filler material is selected from the group consisting of: calcium carbonate, kaolin, clay, talc, titanium dioxide, alumina trihydrate, precipitated silica and silicates or mixtures thereof.

5. The wrapping paper as claimed in claim 1, wherein the base paper has a diffusing capacity of 1.0 to 2.0 cm/s.

6. The wrapping paper according to claim 1, further comprising a plurality of combustion-suppressing regions provided separately from each other.

7. A wrapping paper according to claim 6, wherein the burn inhibiting regions are provided on the surface of the base paper.

8. The wrapping paper of claim 6, wherein the burn inhibiting regions are disposed embedded in the base paper matrix.

9. A wrapping paper according to claim 6 wherein the diffusion capacity of the burn inhibiting areas is 0.10 to 0.35 cm/s.

10. Wrapping paper according to claim 6, wherein the ratio of diffusion capacity between the burn inhibiting areas and the base paper is in the range of 5% to 35%.

11. A wrapping paper according to claim 6, wherein the burn inhibiting regions comprise at least one additive that reduces the diffusion capacity of the base paper, and wherein said additive is selected from the group consisting of: alginates, polyvinyl alcohol, polyvinyl acetate, modified and unmodified starches, cellulose acetate derivatives, inorganic ions, natural gums, or mixtures thereof.

12. A wrapping paper according to claim 6 wherein the burn inhibiting areas are in the form of strips.

13. The wrapping paper as claimed in claim 1, wherein the fibrous material is a cellulose fibrous material.

14. A smoking article comprising a charge of smoke producing material wrapped with wrapping paper according to any one of claims 1 to 13.