KR20200045493A - Wrapping paper for smoking items - Google Patents

Abstract

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

Description

Wrapping paper for smoking items

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

For most smokers, one standard cigarette smoking (ISO) provides a satisfactory smoking experience with one cigarette smoking rate of about 7 to 12 puffs depending on the tobacco rod length and diameter. To reach the desired number of puffs, several solutions are known from advanced technology.

US 5,379,788 teaches a cigarette system having a larger number of puffs, i.e. at least about 14 puffs, than conventional cigarettes having the same dimensions and length of the tobacco rod. Cigarettes are designed to be partially smoked, digested, stored, and then re-smoked. A filter is attached to the tobacco rod of a cigarette that is configured to provide smokers with a puff delivery profile of tar, nicotine, and flavor, which is almost the same for both cigarette smoking. Puff water greater than normal puff water is achieved by using a tobacco blend that burns more slowly, a greater tobacco density, and / or a burn rate flame retardant paper.

US 2011 / 083,687 A1 discloses that the burning rate of smoking articles is reduced by incorporating fillers having a medium particle size greater than about 2.5 microns into the paper to increase the number of puffs.

Japanese Patent No. In 2834325, cigarettes are disclosed that have a cut-off density of 300 mg / cc or more, which reduces the burning rate of the cut-off rod and thus increases the number of puffs provided by the cigarette.

An object of the present invention is to provide a wrapping paper that can increase the number of puffs of a smoking article without changing the tobacco rod length or diameter and without affecting the TNCO level of the smoking article.

The inventors have found that by providing a wrapping paper having a desired porosity and a predetermined amount of combustion additive, the number of puffs of a smoking article can be increased.

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

In another aspect of the invention, a smoking article is disclosed comprising a filling of a smokeable material surrounded by a wrapper according to the first aspect of the invention.

Additional aspects and embodiments of the invention are disclosed in the dependent claims and may be obtained from the following description and examples, but are not limited thereto.

The accompanying drawings illustrate embodiments of the invention and will convey further understanding thereof. In connection with the detailed description, it serves to describe the concepts and principles of the invention. Other implementations and numerous specified advantages can be derived in connection with the drawings.
1 is a schematic enlarged perspective view showing an example of a smoking article according to the present invention. The smoking article 40 shown in FIG. 1 includes a front end 410a and a smokeable rod 410 having a base end 410b constituting a firing end, and a front end 420a and a base end 420b. It includes a filter 420 provided. In the cigarette rod 410 and the filter 420, the base end 410b of the smokeable rod and the front end portion 420a of the filter abut each other, and the smokeable rod 410 and the filter 420 have a tipping paper 430 ). The smokeable rod 410 is composed of a cigarette filler rod 411 and a wrapping paper 412 that wraps the outer circumferential surface of the cigarette filler rod 411. The wrapping paper 412 is composed of a wrapping paper according to the present invention.
2 is a schematic partial cut-away perspective view showing an example of a cigarette packaged with a cigarette paper having a strip-shaped combustion-suppression region according to an embodiment of the present invention.
The cigarette 10 is provided with a cigarette rod 11 composed of a cigarette filler 13 packaged with the wrapping paper 12 of the present invention in a column form. The general filter 15 can be attached to the proximal end 11b (ie, the downstream end in the suction direction) of the tobacco rod 11 by using the tipping paper 14 according to the conventional method.
A plurality of strip-shaped combustion-suppression regions 122 coated as described below 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-suppression regions 122 are formed spaced apart from each other in the circumferential direction of the tobacco rod 11.
A combustion-non-inhibition region 123 is formed between the adjacent band-shaped combustion-inhibition regions 122. Since these regions 123 are constituted by a part of the base 121, they can be burned in a normal smoking state. Therefore, each region 123 serves as a combustion-non-inhibition region. For example, each strip-shaped combustion-suppression region 122 may have a width of 1 to 6 mm in the circumferential direction. The distance between adjacent combustion-suppression regions 122 may be 2 to 20 mm.
In the cigarette shown in FIG. 2, a combustion-non-inhibiting region 124 may be provided in an area covering the distance d from the tip portion 11a of the base paper 121.
3 is a schematic partial cut-away perspective view showing an example of a cigarette packaged with a cigarette paper having an annular band-shaped combustion-suppression region according to another embodiment of the present invention.
The cigarette 20 has a structure similar to that of the cigarette 10 shown in FIG. 2 except for the structure of the combustion-suppression region of the wrapping paper. Accordingly, in FIG. 3, elements similar to those in FIG. 2 are given the same reference numerals, and descriptions thereof are omitted.
In the cigarette 20 shown in FIG. 3, a plurality of annular band-shaped combustion-suppression zones 211 are formed on the base 121 of the wrapping paper 21 packaging the cigarette filler 13, and the combustion-suppression zones Define These annular band-shaped combustion-suppression regions 211 are formed to be spaced apart from each other in the longitudinal direction of the tobacco rod 11.
A combustion-non-inhibition region 212 is formed between the adjacent annular band-shaped combustion-inhibition regions 211. Since these combustion-non-inhibiting regions 212 are constituted by a part of the base paper 121, they can be burned in a normal smoking state. Therefore, each region 212 acts as a combustion-non-inhibition region, like the region 123 of FIG. 2. For example, each annular band-shaped combustion-suppressing region 211 may have a width of 4 to 7 mm in the longitudinal direction. The distance between adjacent combustion-suppressing regions 211 may be 18 to 25 mm.

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.

It should be understood that all values given in this disclosure are supplemented by the word "about", unless the context clearly indicates otherwise.

The smoking articles referenced herein are not particularly limited and may be, for example, cigarettes, cigars, or the like. Smoking articles typically have a roughly cylindrical rod-shaped configuration, and include a filler, roll, or column of smokeable material, such as shredded tobacco (eg, cut filler), which is surrounded by a paper wrapper so-called “tobacco”. Form a rod ”. Cigarettes or cigars usually also have a cylindrical filter element arranged end-to-end with the tobacco rod. The filter element can include, for example, a plug of cellulose acetate tow, which is circumscribed by a packaging material known as a “plug wrap”. Typically, the filter element is attached to one end of the tobacco rod using an circumscribed packaging material known as a “tipping wrapper”. The filter element packaged by the tipping wrapper is known as a “mouthpiece element”.

As used herein, unless expressly stated otherwise, wt% should be understood as a weight percentage based on the dry weight of the original paper in the packaging. In this disclosure, all amounts given in wt% in certain embodiments eventually become 100 wt%. Thereby, the weight percentage is calculated by dividing the mass of each component by the dry mass of the base paper.

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

The symbol "CU" herein refers to a CORESTA air permeable unit commonly used in paper specifications by smoking article designers. The CORESTA air permeability unit is defined as “volume flow rate of air (cm ³ / min) through a 1 cm ² substrate sample upon application of a pressure difference of 1 kPa” and is measured according to ISO 6565: 2011.

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

The present invention comprises a base paper comprising a fibrous material, a filler material, and at least one combustion additive, wherein the paper porosity of the base paper is 10 to 60 CU, and the total amount of the combustion additive is 0.1 to 0.7 wt based on the dry weight of the base paper. %, Related to the wrapping paper for smoking articles. By providing a wrapping paper having such a porosity and amount of combustion additive, it is possible to increase the number of puffs of a smoking article.

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

In certain embodiments of the present wrapping paper, combustion additives are included in the paper in an amount of 0.2 to 0.6 wt%, such as 0.3 to 0.5 wt%, based on the dry weight of the paper. For example, in some embodiments, the total amount of combustion additive is in an amount of 0.2 to 0.4 wt%, such as 0.3 wt% based on the dry weight of the base paper. In another embodiment, the total amount of combustion additive is in an amount of 0.3 to 0.5 wt%, such as 0.4 wt%, based on the dry weight of the base paper. In another embodiment, the total amount of combustion additive is from 0.4 to 0.6 wt%, such as 0.5 wt%, based on the dry weight of the base paper. This further increases the number of puffs of the smoking article.

In certain embodiments of the present wrapping paper, the combustion additives include citrate salts, such as sodium and potassium citrate, acetate salts, such as sodium and potassium acetate, phosphate salts, such as sodium and potassium phosphate salts, tartrate salts, such as sodium tartrate salts and potassium, nitrate salts, such as nitric acid Sodium and potassium, or mixtures thereof.

Combustion additives are not particularly limited as long as they are suitable for use in smoking articles. 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 28 wt%, such as 20 to 25 wt%, based on the dry weight of the base paper. For example, the amount of filler in the base paper is 19 to 25 wt%, such as 21 to 23 wt%, such as 22 wt%, based on the dry weight of the base paper. In another embodiment, the amount of filler in the base paper is 22 to 28 wt%, such as 24 to 26 wt%, such as 25 wt%, based on the dry weight of the base paper. In another embodiment, the amount of filler in the base paper is 17 to 23 wt%, such as 19 to 21 wt%, such as 20 wt%, based on the dry weight of the base paper. This amount of filler provides adequate resistance to the manufacturing force exerted on the wrapping paper during high-speed manufacturing, and also enables obtaining the desired opacity of the wrapping paper.

In certain embodiments of this smoking article comprising a wrapper, the filler in the wrapper is calcium carbonate, such as precipitated calcium carbonate (PCC) or heavy calcium carbonate (GCC), kaolin, talc, titanium dioxide, alumina trihydrate, precipitated silica, and Silicates (PSS), and mixtures thereof.

Like combustion additives, fillers are not particularly limited as long as they are suitable for use in smoking articles. In certain embodiments, calcium carbonate is used.

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

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

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

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

In certain embodiments of the present wrapping paper, the basis weight of the base paper is 20 to 26 g / m ² , such as 21 to 24 g / m ² , or for example 23 to 25 g / m ² , such as 24 g / m ² . By providing a base paper having a basis weight included in this range, it is possible to obtain a desired opacity of the wrapping paper while controlling the CO level.

In certain embodiments of the present wrapping paper, the spreading capacity of the original paper is 1.0 to 2.0 cm / s, such as 1.0 to 1.8 cm / s, or for example 1.2 to 2.0 cm / s, or for example 1.2 to 1.8 cm / s, or for example 1.2 To 1.6 cm / s, or for example 1.4 to 1.8 cm / s, or for example 1.4 to 1.6 cm / s. In the present invention, the diffusion capacity of the wrapping paper is CORESTA Recommended Method No. 77 (CRM No. 77, April 2014).

In one embodiment of the present invention, the wrapping paper can be used for "low-flammable" smoking articles. A “low ignition” smoking article is a smoking article designed to have less likelihood of igniting furniture and equipment, eg soft furniture such as sofas or mattresses. Ideally, a low-ignition smoking article will continue to burn when left free, as in an ashtray holder, or held in hand without smoking (“free burning”). The tendency for a cigarette to extinguish during free combustion is referred to as "self-extinguishing".

The ability of a smoking article to generate sufficient heat to extinguish or continue to burn, potentially causing ignition of upholstered furniture or bedding (referred to as LIP) can be measured by any suitable method. In the present invention, this is done according to ISO 12863: 2010.

The likelihood of a smoking article being extinguished while burning in a free atmosphere (referred to as FASE) can be measured by any suitable method. In the present invention, this is done according to ISO 12863: 2010.

In certain embodiments of the present wrapping paper, the base paper may include a plurality of combustion-suppressing regions provided spaced apart from each other. The combustion-inhibiting region may be provided on the surface of the base paper or embedded in the matrix of the base paper. A plurality of combustion-suppressing regions can 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 the first surface of the base paper, and the remainder of the plurality of burn-inhibiting regions may be provided on the second surface on the opposite side of the base paper.

Thus, the wrapping paper is formed of a base paper, optionally provided with a combustion-suppressing region. Since the area of the wrapping paper outside the combustion-inhibited area is regarded as the combustion-inhibited area, and the combustion-inhibited area is the same as the original paper, the present application interchanges the terms "combustion-non-inhibited area" and "base" Use it whenever possible.

The shape and amount of these combustion-suppressing regions are not further limited and may vary depending on the specific requirements of the smoking article. In certain embodiments, the combustion-inhibiting region is in the form of a strip. In one embodiment, all bands are parallel to each other. In other embodiments, at least two bands are not parallel to each other.

These combustion-inhibiting regions may contain additives that reduce the diffusion capacity of the base paper. The additive that can be applied to the wrapping paper can be any of the additives used in the art to reduce the ignitability of smoking articles.

In certain embodiments of the present wrapping paper, the combustion-inhibiting region comprises at least one additive that reduces the diffusion capacity of the base paper, and the additive comprises alginate, polyvinyl alcohol, partially hydrolyzed derivatives and copolymers. Polyvinyl acetate, modified and unmodified starch, cellulose derivatives such as carboxy-methyl 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 agents known in the art to change the burn rate, and combinations thereof. The additive may further include natural gums, such as guar gum.

The additives can be applied to the packaging with a liquid carrier, which can be in the form of solutions, suspensions, emulsions, or combinations thereof. The liquid carrier may be aqueous, non-aqueous, or a combination thereof, and may include an emulsifier depending on the nature of the additive.

In one embodiment, the suspension of additives can be applied in an aqueous carrier. The aqueous carrier penetrates the base paper and delivers the additive in its matrix. When the carrier evaporates, the additive remains in the base matrix, where it can reduce the diffusing capacity before or during combustion of the smoking article. When applied to the base paper, the liquid carrier may evaporate, so the wrapping paper is dried and the additive solidifies in the matrix of the base paper.

In certain embodiments of the present wrapping paper, the diffusion capacity of the combustion-inhibiting region is 0.10 to 0.35 cm / s, such as 0.15 to 0.35 cm / s, or for example 0.10 to 0.30 cm / s, or for example 0.15 to 0.30 cm / s, Or for example 0.15 to 0.25 cm / s, or for example 0.20 to 0.30 cm / s, or for example 0.20 to 0.25 cm / s.

In certain embodiments of the wrapping paper, the ratio of diffusion capacity between the burn-inhibited region and the burn-inhibited region in the wrapper is 5% to 35%, such as 10% to 35%, or for example 15% to 35%, or for example In the range of 5% to 30%, or for example 10% to 30%, or for example 15% to 30%, or for example 10% to 25%, or for example 15% to 25%. In other words, the ratio of the diffusion capacity of the combustion-suppressing region to the diffusion capacity of the base is 5% to 35%, such as 10% to 35%, or for example 15% to 35%, or for example 5% to 30%, or 10 % To 30%, or for example 15% to 30%, or for example 10% to 25%, or for example 15% to 25%. Providing this ratio of diffusion capacity between the combustion-inhibiting region and the combustion-inhibiting region (i.e., base paper), it is possible to provide a low-ignition smoking article with reduced impact on flavor.

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

The present invention also relates to a smoking article comprising a wrapper as in the above-described embodiment, which wraps a filling, roll, or column of smokeable material to form a tobacco rod.

In certain embodiments of the smoking article, when the tobacco rod is packaged by wrapping paper, the combustion-inhibiting regions are in the form of bands extending in the longitudinal direction of the tobacco rod and spaced apart from each other in the circumferential direction of the tobacco rod.

In certain embodiments of the smoking article, when the tobacco rod is packaged by wrapping paper, the combustion-inhibiting region is in the form of a round annular band extending in the circumferential direction of the tobacco rod and spaced apart from each other in the longitudinal direction of the tobacco rod.

Without being bound by any theory, the positive effect of the present invention, that is, the combination of the increase in the number of puffs without changing the length or diameter of the tobacco rod, as described above, has a paper porosity of 10 to 60 CUs and an amount of 0.1 to 0.7 wt%. It results from a specific combination of at least one combustion additive.

The above embodiments can be combined arbitrarily when appropriate. Further possible implementations and embodiments of the invention also include combinations of features not explicitly mentioned in the foregoing or in the context of the following in connection with the examples of the invention. In particular, those skilled in the art will also add individual aspects as improvements or additions to each basic form of the invention.

Yes

The 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 84 mm cigarettes with an increased number of puffs were made from the same cigarette blend. All of these cigarettes were equipped with 63 mm tobacco rods attached to a 21 mm filter by tipping paper. The filter was cut from the same filter rod, and the tipping paper was cut from the same reel. The cigarette rod of cigarette A was packaged with the prior art wrapping paper (wrapping paper A), while the cigarette rod of cigarette B was wrapped with the wrapping paper according to the present invention (wrapping paper B). In both wrappers, the burn-inhibition zone was a 6 mm wide annular band spaced 18 mm in a configuration similar to that shown in FIG. 3. The specifications of each wrapping paper are shown in Table 1 below.

[Table 1]

These cigarettes were measured under ISO 3308: 2012 conditions to determine their TNCO level as well as the number of each puff. The self-extinguishing of these cigarettes is also measured when they are placed on one surface (ISO 12863: 2010-referred to as LIP) and when burned in free air (ISO 12863: 2010-referred to as FASE) Did. The results are shown in Table 2 below. Wrapping paper B was found to increase cigarette puff count by 1.3 while maintaining very similar TNCO levels. Wrapping paper B also exhibits a high self-extinguishing rate when placed on one surface, and significantly improved performance when burned in a free atmosphere.

[Table 2]

Example 2

Two 84 mm low-ignition cigarettes were made from the same cigarette blend. All of these cigarettes were equipped with 57 mm tobacco rods attached to a 27 mm filter by tipping paper. The filter was cut from the same filter rod, and the tipping paper was cut from the same reel. The cigarette rod of cigarette C was packaged with the prior art wrapping paper (packaging paper A), while the cigarette rod of cigarette D was wrapped with the packaging paper (packaging paper B) according to the invention of Example 1.

These cigarettes were measured under ISO 3308: 2012 conditions to determine their TNCO level as well as the number of each puff. The self-extinguishing of these cigarettes is also measured when they are placed on one surface (ISO 12863: 2010-referred to as LIP) and when burned in free air (ISO 12863: 2010-referred to as FASE) Did. The results are shown in Table 3 below. Wrapping paper B was found to increase cigarette puff count by 0.9 while maintaining very similar TNCO levels. Wrapping paper B continues to show a high self-extinguishing rate when placed on one surface, and significantly improves performance when burned in free air.

[Table 3]

Example 3

Three 84 mm cigarettes were made from the same cigarette blend. All of these cigarettes were equipped with 57 mm tobacco rods attached to a 27 mm filter by tipping paper. The filter was cut from the same filter rod, and the tipping paper was cut from the same reel. Cigarette E cigarette rods were packaged in the prior art packaging (packaging E), cigarette F cigarette rods were packaged in the first packaging paper (packaging paper F) according to the invention, cigarette G cigarette rods according to the invention 2 It was wrapped with wrapping paper (wrapping paper G). The specifications of each wrapping paper are shown in Table 4 below.

[Table 4]

These cigarettes were measured under ISO 3308: 2012 conditions to determine their TNCO level as well as the number of each puff. The results are shown in Table 5 below. It was found that the wrapping papers F and G increased the number of puffs of cigarettes F and G by 1.0 and 1.2, respectively, while maintaining a TNCO level very similar to that measured in cigarette E.

[Table 5]

Claims (15)

In the wrapping paper for smoking articles,
A base material comprising a fibrous material, a filler material, and one or more combustion additives,
a. The paper porosity of the base paper is 10-60 CU;
b. The total amount of the combustion additive is 0.1 to 0.7 wt%, based on the dry weight of the base paper, wrapping paper. According to claim 1,
The combustion additive is selected from the group consisting of citrate, acetate, phosphate, tartrate, nitrate, or mixtures thereof. The method according to claim 1 or 2,
The basis weight of the base paper is 20 to 26 g / m ² , wrapping paper. The method according to any one of claims 1 to 3,
The amount of the filler is 17 to 28 wt% based on the dry weight of the base paper, wrapping paper. The method according to any one of claims 1 to 4,
The filler material is selected from the group consisting of calcium carbonate, kaolin, talc, titanium dioxide, alumina trihydrate, precipitated silica and silicate (PSS), or mixtures thereof. The method according to any one of claims 1 to 5,
The spreading capacity of the base paper is 1.0 to 2.0 cm / s, wrapping paper. The method according to any one of claims 1 to 6,
A wrapping paper further comprising a plurality of combustion-suppressing regions provided spaced apart from each other. The method according to any one of claims 1 to 7,
The combustion-suppressing region is provided on the surface of the base paper. The method according to any one of claims 1 to 8,
The combustion-inhibiting region is provided embedded in a matrix of a base paper. The method according to any one of claims 7 to 9,
Diffusion capacity of the combustion-suppressing region is 0.10 to 0.35 cm / s, wrapping paper. The method according to any one of claims 7 to 10,
The wrapping paper ratio between the combustion-suppressing region and the base paper is in the range of 5% to 35%. The method according to any one of claims 7 to 11,
The combustion-inhibiting region includes at least one additive that reduces the diffusion capacity of the base paper, and the additive includes alginate, polyvinyl alcohol, polyvinyl acetate, modified and unmodified starch, cellulose derivatives, inorganic ions, and natural gums. , Or a mixture thereof. The method according to any one of claims 7 to 12,
The combustion-inhibiting region is in the form of a strip, wrapping paper. The method according to any one of claims 1 to 13,
The fibrous material is a cellulose fibrous material, wrapping paper. A smoking article comprising a filling of a smokeable material surrounded by a wrapping paper according to claim 1.

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