EA012774B1 - Slit banded paper - Google Patents

Abstract

The invention relates to wrappers of smoking articles having slit banded regions 10 exhibit both low ignition propensity and reduced rates of self-extinguishment under free burn conditions. In one embodiment, the slit banded regions comprises first 11, second 12 and third 13 zones, with the second zone having greater permeability that the first and third zones, which comprise add-on material. A method of making the wrappers is also disclosed, as are smoking articles including the wrappers.

Description

In the second embodiment, a wrapper of a smoking article is provided, including a base web and a cross-striped area of additional material. The striated area provides for the quenching of smoking articles, including the striated area, if they are left on the substrate. The wrapper further comprises at least one air-permeable intermediate zone along the cross-striped region, such that the number of self-extinguishing smoking articles that include the wrapper is statistically lower than that of smoking products without the specified intermediate zone.

In a third embodiment, a wrapper of a smoking article is provided, comprising a base web and at least one transversely striped region including the first, second and third zones on the base web. At least one transversely stripe region contains no fillers. The first and third zones are located outside the second zone, with the second zone having a higher permeability compared with the first and third zones.

In a fourth embodiment, a wrapper of a smoking article is provided, comprising a base web and at least one transversely striped region, including first the second and third zones on the base web. The first and third zones are located outside the second zone, the second zone has a higher permeability compared with the first and third zones, and, in addition, the second zone, as well as the first and third zones include additional material.

In the fifth embodiment, a method of manufacturing a striped wrapper of a smoking article is provided, comprising feeding the base web and forming thereon at least one transversely striped region including the first, second and third zones on the base web. The first and third zones are located outside the second zone, the second zone has a higher permeability compared with the first and third zones, and at least the first and third zones are formed from additional material that does not contain fillers, and optionally at least one of the zones is formed, at least partially from additional material that includes a filler.

In the sixth embodiment, a method of manufacturing a striped wrapper of a smoking article is provided, comprising feeding the base web and forming thereon at least one transversely striped region including the first, second and third zones on the base web. The first and third zones are located outside the second zone, the second zone has a higher permeability compared with the first and third zones, and, in addition, the second zone, as well as the first and third zones are formed from additional material.

In the drawings:

FIG. 1-3 — smoking articles comprising paper with divided strips, as described in the present invention;

FIG. 4, 5 — additional versions of smoking articles including paper with divided strips, as described in the present invention;

FIG. 6 is a block diagram of a multistage printing device.

Preferably, the smoking article is extinguished if it is left on the substrate, wherein the indicated trend in the present invention corresponds to a smoking article having a low flammability. Ideally, a smoking article with a low tendency to ignite will continue to burn if it is free to hold it in weight, for example, in an ashtray holder, or it is free to hold in hand, not smoking (free burning). Cigarettes of many previous developments that meet the requirements of a low tendency to ignite, demonstrate high rates of self-extinguishing in conditions of free burning.

- 1 012774

Used in the present description, the phrase complete combustion refers to the test in accordance with the standard E2187-04 of the American Society for Testing and Materials (A8TM), the Standard method of measuring the resistance of cigarettes to ignition, which provides a measure of the ability of a lit cigarette with a striped paper wrapper, placed on a flammable surface, continue to burn without smoking. Thus, complete combustion refers to a situation in which charring completely passes through the striped area of the cigarette wrapper and does not cause the extinguishing of the lit cigarette. In addition, the concept of self-extinguishing in conditions of free burning as used in this description refers to extinguishing a lit cigarette in the absence of smoking (puffs) when such a cigarette is in conditions of independent, free burning.

The striped areas described in this invention combine low flammability and low self-extinguishing rates under free-burning conditions. Striped areas are preferably formed using printing, namely gravure printing, described in detail below. As an alternative to printing, striped areas may include a suspension of highly purified fibrous cellulose (for example, fibers, fibril, microfibril, or combinations thereof) or other additional material applied using various spraying or coating methods, including application methods that use a moving in the molding section of the paper machine, as described in patents I8 5997691 and I8 6596125 of the present applicant, the contents of which by virtue of this reference is included in the present detailed description in full.

In another embodiment, the striped region may include first, second, and third zones of additional material that may be applied by any of the methods disclosed herein, the second zone includes perforated holes that are preferably filled with a sealing material that melts or evaporates as it approaches. the combustion zone to the striped area, thus providing a second zone of increased permeability.

Thus, a wrapper of the smoking article is provided, comprising a base web and at least one transversely striped region including the first, second and third zones. The first and third zones include additional material that reduces the permeability of the wrapper. The first and third zones have such a width that if the said first or third zones were applied separately to the wrappers of smoking articles, the smoking articles would show a statistically significant amount of complete combustion and a statistically insignificant amount or absence of self-extinguishing in free-burning conditions (for example, test batches of 20-50 cigarettes).

The total width of the first and third zones is such that if these zones were applied to the wrappers of smoking articles in the form of a single continuous strip (without separation or other rupture), smoking articles would show a statistically insignificant amount or absence of complete combustion and a statistically significant amount of self-extinguishing in conditions of free burning. The first and third zones are separated by a second zone. The second zone includes a smaller amount of additional material than the first and third zones, or does not include any additional material. The wrapper has greater permeability along the second zone than along the first and third zones. The second zone has a smaller width than the width of the first or third zones (which may be the same or different widths), with the result that the lit smoking article, including the first, second and third zones, demonstrates a statistically reduced amount of self-extinguishing under free-burning conditions compared to smoking products containing wrappers, on which the first and third zones are applied in the form of a single continuous strip, while maintaining a statistically insignificant amount or absence of complete combustion. Preferably, the first and third zones include a uniform additional material across the width of the first and third zones. Optionally, the second zone may have a width substantially equal to the width of the first and third zones.

The total weight of the additional material for the striped region is preferably in the range from 0.5 to 15 g / m ² , more preferably in the range from 0.5 to 3 g / m ² , even more preferably in the range from 0.5 to 1.5 g / m ² approx. Regular cigarette paper is permeable, and permeability is usually indicated in units of COKE8TA, in which the permeability of paper is measured, expressed as the ratio of the volume flow rate of air (cm ³ / s) passing through a unit area (cm ² ) at a certain pressure drop (cm of water column). The permeability of cigarette paper is usually greater than 20 SOKE8TA, and preferably cigarette paper has a permeability of from about 33 to about 60 SOKE8TA and a density of about 22-30 g / m ² . However, the permeability of the striped areas and cigarette paper below them is preferably in the range of 0 to 15 SOKE8TA. The reduction in permeability preferably limits the air flow necessary to maintain the burning of the coal of the cigarette near the striped area.

The first and third zones preferably have a higher density (in grams per square meter) compared to the intermediate second zone; for example, the density (in grams per square meter) of the first and third zones may be at least two times higher than the density of the second zone (in grams per square meter). The second zone may include a gap. The term “gap” as used here refers to a separate section of the striped area between the first and third zones, which does not have any additional material that reduces permeability (i.e. does not contain any

- 2 012774 or layers of additional material that reduces permeability). In order to facilitate combustion in the second zone, the wrapper may include iron oxide in the position of the second zone. The second zone preferably has a higher permeability than the first and third zones.

At least one cross-striped region preferably includes a first printed layer in contact with the base web and a second printed layer, preferably having equal or greater density (in grams per square meter) than the first printed layer lying on the first printed layer. However, the second and / or subsequent layers may have a lower density than the first layer. For example, the density (in grams per square meter) of the second printed layer may be at least two times less than the density of the first printed layer (in grams per square meter). In one embodiment, the second zone may include a single printed layer, and the first and third zones may include at least two printed layers (more preferably three or more layers). Alternatively, the first and third zones may include at least three or four printed layers, and the second zone may include only one or two, or not include any printed layers at all.

The band-free areas of the base web preferably do not include additional permeability reducing material. As described below with respect to FIG. 2, the cross-striped region may include more than three zones. For example, the cross-striped area may include, for example, five zones, with the second and fourth zones being separated by the first, third and fifth zones, and a wrapper having greater permeability along the second and fourth zones than along the first, third and fifth zones.

A wrapper of the smoking article is also provided, including a base web and a striated area of additional material. The striated area is designed to cause quenching of smoking articles, including the striped area, if they are left on the substrate. The wrapper further includes a more permeable intermediate zone along the cross-striped region, such that the number of self-extinguishing smoking articles that include the specified wrapper is statistically reduced compared to the number of self-extinguishing smoking products without an intermediate zone.

In a further embodiment, the wrapper of the smoking article comprises a base web and at least one transversely striped region comprising the first, second and third zones on the base web. At least one cross-striped region may contain no fillers and, optionally, at least one of the zones is formed, at least partially, of additional material that includes a filler. The additional material is preferably uniform across the width of the first and third zones. The first and third zones are located outside the second zone, and the overall structure of the wrapper in the second zone has a higher permeability compared with the general structure of the wrapper in the first and third zones.

Additionally, there is provided a wrapper of a smoking article comprising a base web and at least one cross-striped region including the first, second and third zones on the base web.

The first and third zones are located outside the second zone, the second zone has a higher permeability compared with the first and third zones, and the second zone, as well as the first and third zones, include additional material.

The wrappers of the present invention are preferably supplied in coils, and it is preferable that the wrapper in the coil includes uniformly spaced cross-striped regions or repeating rows of transverse strip regions.

In addition, there is provided a method of manufacturing a striped wrapper of a smoking article, comprising feeding the base web and forming thereon at least one cross-striped region including the first, second and third zones on the base web. The first and third zones are located outside the second zone, the second zone has a higher permeability compared with the first and third zones, and at least the first and third zones are formed from additional material that does not contain fillers. Optionally, at least one of the zones is formed at least partially from an additional material that includes a filler. The additional material is preferably uniform across the width of the first and third zones.

Moreover, a method of manufacturing a striped wrapper of a smoking article is provided, comprising feeding the base web and forming thereon at least one cross-striped region including the first, second and third zones on the base web. The first and third zones are located outside the second zone, the second zone has a higher permeability compared with the first and third zones, and, in addition, the second zone, as well as the first and third zones are formed from additional material. Optionally, at least one of the zones is formed at least partially from an additional material that includes a filler. The additional material is preferably uniform across the width of the first and third zones.

- 3 012774

FIG. 1 to 3, smoking articles are shown including divided strip paper as described in the present invention. In particular, in FIG. 1 shows a smoking article having two striped regions 10 on the base fabric 100, each of which includes the first and third zones of additional material 11 and 13, separated by a second zone 12, which may be present in the form of a gap or in the form of a zone with a reduced amount of additional material. The first and third zones of additional material 11 and 13 may have a width of, for example, from about 2 to 5 mm each, preferably from about 2 to 3 mm, and the second zone 12 may have a width of, for example, from about 1 to 2 mm. More specifically, the first and third zones of additional material 11 and 13 may have a width of, for example, approximately 3 mm each, and the second zone 12 may have a width of, for example, approximately 1.5 or 2 mm. The first and third zones of additional material 11 and 13 preferably comprise multiple layers of additional material, such as, for example, two, three or four layers of additional material. The additional material is preferably uniform across the widths of the first and third zones 11 and 13.

FIG. 2 shows a smoking article having two regions 20 on the base fabric 100, each of which includes the first, third and fifth zones of additional material 21, 23 and 25, separated by second and fourth zones 22 and 24, which may be present in the form of gaps or in the form layers with a reduced amount of additional material. The first, third and fifth zones of additional material 21, 23 and 25 may have a width, for example, from about 2 to 3 mm each, and the second and fourth zones 22 and 24 may have a width, for example, from about 1 to 2 mm each. More preferably, the first, third and fifth zones of the additional material 21, 23 and 25 may have a width of, for example, about 2 mm, and the second and fourth zones 22 and 24 may have a width of, for example, approximately 1 mm or less. The first, third, and fifth zones of additional material 21, 23, and 25 preferably include multiple layers of additional material, such as, for example, two, three, or four layers of additional material. The additional material is preferably uniform across the widths of the first, third, and fifth zones 21, 23, and 25.

FIG. 3 shows a smoking article having two areas 30 on the base fabric 100, each of which includes the first and third zones of additional material 31 and 33, separated by a second zone with a smaller amount of additional material 32. The first and third zones of additional material 31 and 33 may be wide for example, approximately 2 to 3 mm each, and the second zone with a smaller amount of additional material 32 may have a width of, for example, approximately 1 to 2 mm. More preferably, the first and third zones of additional material 31 and 33 may have a width of, for example, approximately 3 mm each, and the second zone with a smaller amount of additional material 32 may have a width of, for example, approximately 2 mm or less. The first and third zones of additional material 31 and 33 preferably include multiple layers of additional material, such as, for example, two, three or four layers of additional material, while the second zone with a smaller amount of additional material 32 may include, for example, one or two layers of additional material . The additional material is preferably uniform across the widths of the first and third zones 31 and 33. Although the second zones 32 are functional with a width of 1 mm, this embodiment is more functional with a width of 1.2 mm or more.

According to FIG. 1-3 paper with separated stripes provides the use of wrappers with a lower permeability for a given level of CO than the previous development of striped paper. For example, it was found that under certain circumstances a tobacco rod containing paper with a permeability of 33 SOVE8TL and a CO (RTS) excretion level of 11 mg would emit 15 mg of CO (RTS) if earlier versions of the bands were used without further modification. In order to counteract the increase in CO, the permeability of the wrapper should be increased to approximately 46 SOCA8TL. Such changes have many implications for the design of cigarettes, such as, for example, the impact on the number of puffs, a possible reduction in the processability of paper, etc. On the contrary, paper with separated stripes, having a permeability of 33 SOKE8TL, emits 12 mg of CO (RTS). Thus, the paper technology with divided strips, described in the present invention, provides for the use of strips with less impact on the level of CO (RTS).

Referring to FIG. 4 and 5, additional embodiments may include striped areas in which zones are arranged in length, instead of being circumferentially arranged. More specifically, FIG. 4 corresponds to the configuration of the striped regions of FIG. 2, wherein the zones are arranged in length instead of circumferentially, and FIG. 5 corresponds to the configuration of the striped areas of FIG. 3, and the zones are arranged in length instead of being arranged in a circle.

In a preferred embodiment, the first layer of each striped region is preferably formed using a water-based sealing composition that extends across the entire width of the striped region. A subsequent layer (or layers) of each striped region can be formed using the same film-forming composition based on water or another composition based on water. For example, all multiple layers may include layers containing only starch, or multiple layers may include one or more layers containing only starch and one or more layers containing calcium carbonate (in any order). In the course of the Glu

- 4 012774 side printing seal composition is preferably heated to a temperature at which its viscosity is in the range of viscosities suitable for gravure printing. When the hot sealing composition is applied, the sealing composition cools or cools rapidly and may be desirable. Thus, part of the free water in the sealing composition becomes bound and unable to be absorbed or moved into the deeper layers of the fibers of the base web. Such binding of free water prevents the formation of waviness, twisting in a spiral and / or the appearance of wrinkles on the base fabric. Subsequent layers of the striped areas preferably have an increased thickness compared with the first layer. Striped areas provide a reduction in the permeability of the underlying fabric below, which preferably limits the air flow necessary to maintain the burning of the embers of the cigarette near the striped area. Additional details of the prospective multi-threaded printing can be found in the present applicant's provisional application for US Patent No. 60/707964, entitled FCCC, ME1-RA§§ ΡΚΙΝΤ ΒΑΝΏΕΌ RARE, filed August 15, 2005, the contents of which are incorporated by reference into this description full.

The sealing composition used as the sealing composition may be selected from the group consisting of starch, alginate, carrageenan, guar gum, pectin, and mixtures thereof. Preferably, the sealing composition comprises starch, more preferably oxidized starch, such as, for example, tapioca starch, more specifically oxidized tapioca starch. In some embodiments, the implementation of the sealing composition preferably does not contain fillers, such as, for example, calcium carbonate, which would increase the rate of combustion of the striped area. In a preferred embodiment, the sealing composition used for printing comprises water and from about 20 to about 50% by weight of the sealing composition. At higher concentrations of the sealing composition in the composition, the latter may be gelled with a rapid decrease in its temperature. In this way, binding of free water may occur in the printed striped area.

At room temperature (approximately 23 ° C), the high solids content sealing composition has a viscosity greater than approximately 2 mPa-s (200 centipoise (cP)) and is not suitable for intaglio printing; however, at a temperature in the range of from about 40 to about 90 ° C, the viscosity of the sealing composition decreases sufficiently, which allows it to be used as a composition for gravure printing. The upper limit of viscosity suitable for intaglio printing is approximately 2 mPa-s (200 cP). Most preferably, the sealing composition has a viscosity of about 1 mPa-s (100 cP) at a temperature in the range of 40 to 90 ° C, as a result of which the composition can rapidly cool upon contact with paper after intaglio printing at the specified temperature. Also important is the viscosity of the composition at room temperature. High viscosity at room temperature is necessary for sealing compositions to solidify at room temperature.

Preferably, the striped areas are applied to the wrapper using a sequential intaglio printing process. Gravure printing operations accurately record sequential printing operations. Thus, intaglio printing can be used to effectively print not only the first layer of striped areas, but also optional consecutive layers.

In a sequential intaglio printing process, preferably after the first layer has been applied to the base web, it is dried after using a suitable pattern before being fed to the second intaglio printing device, where the second layer is applied to the first layer using conventional intaglio printing equipment. Preferably, the second layer has the same width and length as the first layer; however, the second layer may have a density that differs from the density of the first layer (in grams per square meter). The sealing composition of the second layer freezes on a cooler first layer, while the free water does not move or is not absorbed by the paper. Preferably, the second layer is dried using a suitable scheme before subsequent feeding to the second device (s) of intaglio printing, where the successive layer (s) is applied. Preferably, the successive layer (s) has the same length with the previous layer (s) in width and length (i.e. the layers do not have jaggedness); however, the successive layer (s) may have a density different from the density of the previous layer (s) in grams per square meter, or may include various additional compositions. The successive layer (s) are preferably dried after printing each subsequent layer in accordance with well-known intaglio printing methods and conventional intaglio printing systems.

The intaglio printing process can be used immediately after paper making, i.e., on a printing device located near the end of the paper machine. Alternatively, the intaglio printing process can be used in conjunction with rolls that carry the wrapper on which the striped areas are to be printed. For example, a wrapper roll with selected permeability and selected density is set in such a way that the wrapper can be

- 5 012774 from the roll in the form of a continuous base fabric.

The base web is advanced or passes through the first intaglio printing device, where the first layer of each striped area is printed on paper. The printing process can be performed on the front or back side of the paper, or on both sides. The wrapper then passes through a second intaglio printing device, where the second layer of each striped area is printed on the corresponding first layer. Additional layers are applied in a manner similar to that described. Finally, the wrapper with the printed striped areas is wound into a roll. Then the coiled roll is cut into coils. Thereafter, coils are used in the manufacture of the desired smoking article with a conventional tobacco rod making machine.

The design of each intaglio printing device is essentially the same in basic aspects. Thus, it will be sufficient to describe in detail one of the intaglio printing devices, and it should be understood that other intaglio printing devices have similar characteristics, unless otherwise indicated. For the manufacture of striped paper instead of the multi-stage method can be used single-stage method.

In the first intaglio printing device, the machine includes a plate cylinder or roller, usually fixed with rotation around a horizontal axis. Basically, a relief (i.e., points, lines, cells, etc.) is applied to the cylindrical surface of the roller in order to mark the negative of the first layer of the striped areas. Conventional engraving (etching), chemical etching, electronic engraving, and photo-etching can be used to apply the relief to the surface of a plate cylinder. The roller circumference is defined as a multiple of the sum of the nominal distance between the striped areas and the width of the striped areas. Thus, for each turn of the roller, the corresponding total number of first layers of the striped areas is applied to the wrapper.

Although with gravure printing each layer of additional material can be applied uniformly, it is not necessary to apply each layer of additional material uniformly. For example, a layer of additional material may be applied in such a way that individual areas of the layer have different densities (in grams per square meter) compared to other areas of the layer. This can be achieved, for example, by printing a separate section of a layer having a different density than other areas of the layer, in a separate printing stage using additional material having a different density. Alternatively, a layer of additional material may be applied so that the individual portions of the layer have a different thickness compared to other portions of the layer. This can be achieved, for example, by applying a relief to a plate cylinder or roller, which provides a separate section of the layer having a different thickness compared to other areas of the layer.

Multiple zones, for example, the first, second and third zones of the striped areas described in the present invention, can be applied in one printing stage or multiple printing stages. When application is carried out in multiple stages of printing, each zone that contains additional material may be applied in a separate stage of printing. For example, for a striped area containing the first, second and third zones, where only the first and third zones contain additional material, the first zone can be applied in the first printing stage, and the third zone can be applied in the second printing stage. Alternatively, when applied in one stage of printing, zones containing additional material are applied using a printing cylinder or roller with an appropriate relief. For example, for a striped area containing the first, second, and third zones, where only the first and third zones contain additional material, the relief cylinder is applied to a plate cylinder or roller so that additional material is applied only to the first and third zones.

The printing cylinder is installed with rotation in the opposite direction on an axis parallel to the axis of the roller. In some embodiments, the printing cylinder includes a non-metallic elastic surface. The printing cylinder is located between the roller and the support roller, which is also installed with rotation along an axis parallel to the axis of the roller, and which rotates in the opposite direction relative to the printing cylinder. One of the functions of the support roller is to strengthen the central portions of the printing cylinder so that a uniform printing pressure is ensured between the roller and the printing cylinder. The plate cylinder or roller and printing cylinder interact with the formation of a gap through which the base fabric is advanced during the printing process. The size of the specified gap is such as to clamp the base fabric as it moves between the printing cylinder and the printing cylinder. The pressure on the base fabric in the area of the printed contact ensures the correct transfer of the composition from the cylinder to the paper.

The sealing composition described above is contained in the reservoir in order to form the striped areas on the wrapper. The tank communicates with a suitable pump, allowing the viscous sealing composition to be transported. The sealing composition can then be supplied to a suitable heat exchanger, in which the temperature of the sealing composition is increased to be in the range of approximately 40 to approximately 90 ° C, with the result that the viscosity of the sealing composition is set at a level suitable for intaglio printing. As described above, viscosity for intaglio printing typically should be less than about 200 cP. Prev

- 6 012774 respectfully, the temperature of the sealing composition is selected so that the viscosity is less than about 100 centipoise.

Although a separate heat exchanger is disclosed, it may be preferable to control the temperature of the sealing composition in the tank directly. For example, in order to maintain the elevated temperature of the sealing composition, heating elements and a mixing device may be included in the tank.

Ensuring the temperature control in the tank allows you to simplify pump selection and operating conditions, since the pump does not have to deliver a higher viscosity sealing composition that is associated with lower temperatures, since the sealing composition would already be heated and thus have a lower viscosity. Regardless of where the temperature is controlled, in a tank or in a separate heat exchanger, it is important that the temperature control stage be carried out at a temperature chosen so as to avoid overheating of the sealing composition. Overheating may cause discoloration of the sealing composition and may affect the sealing properties of the composition. Thus, when regulating the temperature of the sealing composition, overheating should be avoided.

Regardless of where the temperature control stage takes place, the hot sealing composition is applied to a suitable applicator, which distributes the sealing composition along the form cylinder. This distribution stage can be performed by pouring or spraying the sealing composition onto the plate cylinder or simply by feeding the liquid sealing composition into the bath for the sealing composition where it is captured by the bottom of the plate cylinder between the plate cylinder and the collector. The cylinder may be heated to prevent premature cooling of the composition.

Basically the collector is located vertically around the form roller at a height sufficient to grip the bath, but at the same time well below the top of the form cylinder. When the bath reaches the top of the collector, the sealing composition may flow through the drain hole at the bottom of the device back into the reservoir. Thus, the sealing composition circulates through the printing device and can be maintained at a suitable viscosity for printing using the temperature control device described above.

As the plate cylinder rotates, interacting with the applicator and / or bath, the sealing composition is held on the surface of the plate cylinder, including the impressions located on it to mark the striped areas. Further rotation of the plate cylinder towards the printing gap moves the surface of the cylinder through a suitable scraper. The scraper stretches along the plate cylinder and is positioned to wipe the surface of the plate cylinder. Thus, those portions of the platen cylinder that define the nominal spacing between adjacent striped areas are substantially exempt from the sealing composition, while the engraved portions of the printing cylinder, which define the striped areas themselves, advance to the printing gap filled with the sealing composition.

As the wrapper moves and the surface of the plate cylinder through the printed gap, the sealing composition is transferred to the surface of the wrapper. The linear speed or the speed of the translational movement of the wrapper corresponds to the speed of movement of the tangent surface of both the printing cylinder and the printing cylinder as the wrapping moves through the printing gap. In this way, the sealing composition on the wrapper is prevented from moving and / or smearing.

The thickness of the multi-layered strip regions is preferably less than about 20% of the thickness of the base web, and may be less than 5% of the thickness of the base web. The thickness of the first layer of the striped area applied by the first intaglio printing device is preferably less than 4% of the thickness of the base web, and may be less than 1% of the thickness of the base web. Thus, it is obvious that the thickness of the first layer is small compared to the thickness of the base fabric under it.

FIG. 6 schematically shows a device for multi-stage printing. With respect to the above-described multi-stage printing in FIG. 6 shows a roll 40, a first intaglio printing device 42, a second intaglio printing device 44, a third intaglio printing device 46, winding roll 48, rollers 50, printing cylinder 52, backing roller 54, printing gaps 56, tank 58, pump 60, heat exchanger 62 , the applicator 64, the bath 66, the collector 67, the drain hole 68, the scraper 70, the control cylinders 72, and the guide roller 74. In FIG. 6, the elements of the first intaglio printing device 42 are denoted by the position numbers with the index a, the corresponding elements of the second intaglio printing device 44 are denoted by the same position numbers with the index b, and the corresponding elements of the third intaglio printing device 46 are denoted by the same position numbers with the index c.

Examples

The following examples are not intended to be limiting in any way and are merely illustrative. Cigarettes with five different wrappers (i.e., wrappers with five different configurations of striped areas) were tested for flammability (ΙΡ) and self-extinguishing (8E) in a horizontal position (0 °). The base canvas of each of the wrappers had a permeability of 33 soke8ta and

- 7 012774 density of 25 g / m ² . The term ΙΡ used in this description refers to the complete combustion of a cigarette. Thus, a ΙΡ value of 0% indicates that 0% of tested cigarettes showed complete combustion, a value of ΙΡ equal to 2.5% indicates that 2.5% of tested cigarettes showed complete combustion, and a value of значение equal to 5% , indicates that 5% of cigarettes tested showed complete combustion. As used herein, the designation 8E refers to self-quenching under free-burning conditions. Thus, for example, a value of 8E, equal to 95%, indicates that 95% of tested cigarettes showed self-extinguishing under free-burning conditions, while a value of 8E, equal to 20%, indicates that 20% of tested cigarettes showed self-extinguishing under free-burning conditions.

Table 1

Wrapper The configuration of the striped areas * Overall width of the striped area Test ΙΡ one Test ΙΡ 2 Test ΙΡ 3 The average ΙΡ ЗЕ @ 0 ° Ά Control 6 mm 0% 0% 0% 0% 95% AT 3-1-3 7 mm 0¾ 2.5% 0% 0.8% 60% with 3-2-3 8 mm 0% 0% five% 1.7% 25% ϋ 2-2-2 b mm 2, 5% 0% 0% 0.8% 45% E 2-1-2-1-2 8 mm 2, 5% 2.5% 2, 5% 2, 5% 20%

* Numbers denote the width of zones in mm (see Table 2-5).

In relation to the table. 1 wrapper A was a control and included a continuous, continuous printed stripy area with a width of 6 mm at a speed of adding 5.5x. Used in the present description, the speed of adding 5.5 x leads to a dry density of additional material from 8 to 9 g / m ² and a density of 26.5 g / m ² for striped areas 6 mm wide with a periodicity of 27 mm (i.e. the distance from the front edges of the striped area to the front edge of the next striped area), deposited on the base fabric with a density of 25 g / m ² .

table 2

Wrap Parameters B

Zone 1 Zone 2 Zone 3 Width 3 mm 1 mm 3 mm Layers of additional material 2 one 2 Rate of adding a layer 1.5x / 4x 1.5x / 0 1.5x / 4x Total additional material 5,5x 1.5x 5, 5x

Table 3 Parameters of the wrapper C

Zone 1 Zone 2 Zone 3 Width 3 mm 2 mm 3 mm Layers of additional material 2 one 2 Rate of adding a layer 1.5x / 4x 1.5x / 0 1.5x / 4x Total additional material 5,5x 1, 5x 5,5x

- 8 012774

Table 4

Wrapper options Ό

Zone 1 Zone 2 Zone 3 Width 2 mm 2 mm 2 we Layers of additional material 2 2 2 Rate of adding a layer 1.5x / 4x 1.5x / 2x 1.5x / 4x Total additional material 5, 5x 3, 5 x 5, 5x

Table 5

E wrapper options

Zone 1 Zone 2 Zone 3 Zone 4 Zone 5 Width 2 mm 1 mm 2 mm 1 mm 2 mm Layers of additional material 2 one 2 one 2 Rate of adding a layer 1.5x / 4x 1.5x / 0 1.5x / 4x 1.5x / 0 1.5x / 4x Total additional material 5,5x 1, 5x 5,5x 1, 5x 5,5x

Compared with the control wrapper A, the wrappers B-E showed the required reduction of 8E while maintaining ΙΡ (i.e., without a significant increase in). In particular, the wrapper B showed an improvement compared with the control wrapper A, which is evidenced by a decrease in the mean value of 8E from 95% to 60%. In addition, when comparing wrappers B and Ό, it can be noted that with an increase in the width of the second zone from 1 to 2 mm, the average value of 8Е decreased from 60 to 25% (with the approximate value ΙΡ remaining). Thus, the width of the second zone is preferably greater than 1 mm, preferably about 1.5 or about 2 mm. Although the C wrapper showed good results, which showed an average value of 8Е 45%, the E wrapper showed the best results, which showed an average value of 8Е 20%.

It should be noted that the second and fourth zones, which showed the best results of E wrapper, the striped area of which included the first, second, third, fourth and fifth zones, had a higher permeability. In contrast, wrap B with a striped area that included only the first, second, and third zones, the second zone of which was 1 mm wide, had greater permeability, did not work so well. Thus, wrappers with a stripe region that includes only the first, second and third zones preferably have wider zones of greater permeability (i.e., approximately 1.5 mm or approximately 2 mm) than wrappers with a striped region that includes the first, second , third, fourth and fifth zones.

The concepts and phrases used in this description should not be interpreted with mathematical or geometric accuracy; rather, geometric terminology should be interpreted with meaning, approximate or similar geometric terms and concepts. Such concepts as generally should cover the exact meanings of the relevant terms and concepts, as well as provide an acceptable breadth that is consistent with the form, function and / or meaning.

Although various embodiments have been described, it should be understood that changes and modifications can be resorted to, as will be apparent to those skilled in the art. For example, embodiments have been described in which the breaks preferably have a width of from 1 to 2 mm; other embodiments could be created in which the breaks have a width of 1 to 3 mm. Such changes and modifications should be considered within the scope and scope of the formula appended to this document.

Claims (25)

CLAIM 1. A wrapper of a smoking article comprising a base web and at least one transversely striped region comprising first, second and third zones, said first and third zones including additional material that reduces the permeability of said wrapper; each of these first and third zones has such a width that if any of these first and third zones were applied separately to the wrapper of the smoking article, then this - 9 012774 a line would show a statistically significant amount of complete combustion and a statistically insignificant amount or the total absence of self-extinguishing in conditions of free burning; while the sum of the width of the first zone and the width of the third zone is such that if the first and third zones were applied to the wrapper of the smoking article as a single continuous strip, the smoking article would show a statistically insignificant amount or absence of complete combustion and a statistically significant amount of self-extinguishing in the conditions of free burning; wherein said first and third zones are separated by said second zone; wherein said wrapper has greater permeability along said second zone than along said first and third zones, wherein said second zone has a width less than the width of either said first zone or said third zone, so that the lit smoking article containing said first and second and the third zone, shows a statistically reduced number of self-extinguishing in free-burning conditions compared with smoking articles containing wrappers, on which the first and third zones are applied as unities constant continuous strip, while maintaining the statistically significant quantity or the absence of complete combustion. 2. The wrapper according to claim 1, in which the first and third zones have a greater density than the second zone, expressed in grams per square meter. 3. The wrapper according to claim 2, in which the density (in grams per square meter) of the first and third zones is at least twice the density of the second zone (in grams per square meter). 4. The wrapper according to claim 1, in which the second zone contains a gap. 5. The wrapper according to claim 1, in which the wrapper includes iron oxide in the position of the second zone. 6. The wrapper according to claim 1, in which the additional material, which contain the first and third zones, is uniformly distributed across the width of each of the first and third zones. 7. The wrapper according to claim 1, in which the at least one cross-striped region includes a first printed layer in contact with the base web and a second printed layer on the first printed layer. 8. The wrapper according to claim 1, in which the first and third zones each each include at least three or four printed layers. 9. A wrapper of a smoking article comprising a base web and a cross-striped area of additional material, wherein said cross-striped area is sufficient to extinguish a smoking article with said area of transverse strips when this product is left on the substrate; however, the wrapper further includes at least one breathable intermediate zone along said cross-striped region, such that the number of self-extinguishing smoking articles that include the specified wrapper is statistically reduced compared with the number of self-extinguishing smoking products without the specified intermediate zone. 10. The wrapper according to claim 9, in which at least one breathable intermediate zone includes a gap. 11. The wrapper according to claim 9, in which the air-permeable intermediate zone includes a single printed layer, and the area of additional material includes at least two printed layers. 12. A wrapper of a smoking article comprising a base web and at least one transversely striped region comprising first, second and third zones on the base web, the first and third zones being located outside the second zone and the second zone having a higher permeability compared to the first and the third zone. 13. A wrapper according to claim 12, in which the non-striped areas of the base web are unprinted. 14. A wrapper of a smoking article comprising a base web and at least one transversely striped region comprising first, second and third zones on the base web, the first and third zones being located outside the second zone; while the second zone has a higher permeability compared with the first and third zones, and the second zone, as well as the first and third zones include additional material. 15. A smoking article comprising a wrapper according to any one of claims 1, 9, 12, 14. 16. A method of manufacturing a striped wrapper of a smoking article, comprising feeding the base web and forming thereon at least one transversely striped region comprising the first, second and third zones on the base web; wherein the first and third zones are located outside the second zone, the second zone has a higher permeability compared with the first and third zones, and at least the first and third zones are formed from additional material that does not contain fillers. 17. The method according to clause 16, comprising forming at least the first and third zones by applying a first printed layer of additional material to the base web. - 10 012774 18. The method of claim 16, comprising adding a smaller amount of additional material to the second zone than to the first and third zones. 19. The method according to p, in which the first and third zones have a higher density than the second zone, expressed in grams per square meter. 20. The method of claim 16, wherein the density (in grams per square meter) of the first and third zones is at least twice the density of the second zone (in grams per square meter). 21. The method according to claim 18, comprising forming the second zone, as well as the first and third zones by applying the first printed layer of additional material to the base web. 22. The method according to claim 16, wherein said at least one cross-striped area is formed by printing a sealing material on the base web. 23. The method according to p. 22, in which the printing includes heating the sealing material; applying a hot sealing material on the embossed cylinder (gravure printing); contacting the feed wrapper with a relief cylinder and solidification of the sealing material when in contact with the surface of the wrapper so that the sealing material does not disturb the flat shape of the wrapper. 24. A wrapper with striped areas that include the first, second, third, fourth, and fifth zones, with the second and fourth zones having greater permeability than the first, third, and fifth zones, which include additional material. 25. A method of reducing the effects of at least one smoke component by adding a striped area to a smoking article of an existing structure, comprising the step of adding an intermediate zone of increased permeability to said striped area.